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Tektronix 2246 1Y, Service Manual

The Tektronix 2246 1Y is a high-performance oscilloscope that delivers accurate measurements for professionals. For any troubleshooting or maintenance needs, the detailed Service Manual is available for free download at manualshive.com. This manual provides comprehensive instructions and technical insights to maximize the potential of this excellent product.

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Theory  of  Operation—2246  1Y  and  2246  Mod  A  Service

B  TV  TRIG  EN: 

Switches  between  the  B  TV  Trigger 

signal  and  the  DC  measurement  signal  voltage 

(U1106C).

TV  FIELD  SEL: 

Switches  the  A  Trigger  between  TV 

FIELD  and  TV  LINE  (U1104A).

MAG: 

Controls  the  X I 0  Magnification  function  of  the 

Horizontal  Output  Preamplifier  (U802,  Diagram  6).

VERT  COMP  EN 

:  Turns on  the  Vertical  Comparator 

(U702, 

Diagram 

2) 

during 

voltage 

self 

characterization.

TB  CAL: 

Switches  the  tim e-base  calibration  signal 

into  the  B  trigger  system  during  horizontal  self 
characterization  (U1106A ).

BW 

FULL  B: 

Switches  between  full  and  limited  B 

Trigger  bandwidth.

BW  LIMIT :  Switches  between  full  and  limited  A Trig­
ger  bandwidth.  The  BW  LIMIT  signal  has  a  second 
use.  As  the  last  bit  in  Shift  Register  1,  it  is  fed  back 

to  the  Measurement  Processor  during  diagnostic 
checks  done  on  the  Shift  Registers.

X  Y  :  Switches  the  range  of  the  horizontal  position 
signal  (HORIZ  POS)  between  that  needed  for  Y-T 
display  and  that  needed  for  X -Y   display  (U301B, 
Diagram  6).

Multiplexer  (U1106A)  normally  provides  the  Line 

Trigger  signal  picked  off  from  the  Power  Supply 

input.  For  self  characterization  (SELF  CAL)  of  the 

Time  Base,  the  switch  outputs  the  TB  CAL  signal 
obtained  from  the  Measurement  Processor  (U2501, 

Diagram  8).

TV  Trigger  Detector

INPUT  AMPLIFIER. 

The  signal  at  pin  19  of  U421A  is 

applied  to  pin  3  of  U1101A  via  a  low-pass  filter 
formed  by  R426,  L426,  and  C426.  The  filter  limits 

the  bandwidth  of  the  X-AXIS  signal  to  about  5  MHz 
for  application  to  the  Horizontal  Preamplifier  (U802, 

Diagram  6)  and  to  the  TV  Trigger  Detector  circuitry. 
Operational  amplifier  U1101A  provides  low-pass 
gain  of  the  applied  composite  video  signal  that 

further  attenuates  the  video  portion  of  the  signal 

relative  to  the  sync  pulses.  The  output  signal  from 
U1101A  is  applied  to  the  Peak  Detectors  and  the 

Sync  Comparator.

PEAK  DETECTORS. 

The  peak  detectors  determine 

the  positive  and  negative  peaks  of  the  applied  com ­
posite  video  signal.  Those  peaks  voltages  are 
applied  across  a  voltage  divider  circuit  used  to  set 

the  comparison  level  (slice  level)  to  one  input  of  a 

comparator.  That  level  is  such  that,  when  the  user

selects  the  correct  sync  polarity  for  the  applied  sig­
nal,  the  middle  of  the  sync  tips  is  at  the  threshold 
level  of  the  comparator.  The  output  of  the  com­

parator  then  switches  only  on  the  sync  tips  of  the 
applied  signal.  The  peak  detectors  are  comple­
mentary  in  that  the  positive-peak  detector  tran­
sistors  (Q1101,  Q1102, 

and  Q1103) 

and  the 

negative-peak  detector  transistors  (Q1104,  Q1105, 
and  Q1106)  are  complem entary  types  (PNP-NPN). 
Both  detectors  are  driven  from  the  same  input 
signal;  the  positive  peaks  of  the  video  signal  forward 
bias  Q1101,  and  the  negative  peaks  forward  bias 
Q1104.  The  operation  of  the  positive  peak  detector 
is  described.

The  composite  video  signal  is  applied  to  the  emitter 
of  Q1101.  A  positive-going  signal  increases  the 

current through  Q1101,  causing  the  collector voltage 

to  rise.  The  rising  collector  voltage  biases  on  Q1102 

harder,  and  C l 114  charges  up  rapidly  following  the 
positive-going  signal  up  to  its  positive  peak.  When 

the  input  signal  starts  negative,  Q1101  is  turned  off 
immediately  by  the  charge  held  on  C l 114.  That 

leaves  C l 114  holding  the  positive  peak  voltage  of 

the  input  signal.  Em itter-follower  Q1103  applies  that 
peak voltage  level to  U1104B  pin  3  via  R1117.  R1136 
to the -7 .5  V from   pin  3  provides  a fixed  offset to the 
signal  level.  The  negative-peak  detector  does  the 
same  type  of  operation  on  the  signal  to  apply  the 
negative  peak  voltage  to  pin  5  of  U1104B.

When the sync  polarity  is  selected  to  match  the sync 

of  the  applied  video  signal  (by  the  user  with  the  A 
SLOPE  switch),  the  voltage  level  at  the  selected 
input  of  U1104B  is  at  the  middle  of  the  sync-tip 

voltage.  If  the  wrong  polarity  is  selected,  triggering 
will  take  place  on  the  video  signal.  For  signal 

generator  signals,  the  effect  may  not  be  noticeable, 
except  for  a  shift  of  the  trigger  point;  but  if  com ­
posite  video  signals  are  being  viewed,  the  display 

will  be  unstable when  the  wrong  polarity  is  selected.

SYNC  COMPARATOR. 

The  incoming  composite 

video  signal  is  applied  to the  plus  input  (pin  3)  of the 
Video  Sync  Comparator  (U1102A).  The  Video  Sync 
Comparator  looks  at  the  signal  level  on  pin  2  and 
compares  it  with  the  incoming  video  signal  level. 
When  the  incoming  level  crosses  the  comparison 
threshold,  the  output  of  U1102A switches  state.  That 
state  change  occurs  at  the  mid  level  of  the  sync 
pulses.  The  output  signal  of  U1102A  (TV  LINE)  is 
applied  directly to  U1104A  pin  2  and  U11Q6C  pin  1  to 
be  available  for  selection  for  the  A  and  the  B Trigger 
systems  for  TV  LINE  triggering.

FIELD  SYNC  FILTER. 

The  filter  circuit  composed  of 

R1132, 

R1133, 

C l 106, 

C1107, 

and 

U1102B

processes 

the 

output 

of 

U1102A  further  to 

determine  when  the  vertical  field  sync  signal  is 
present.  The  time  constant  of  the  filter  elements  is 
such  that the  line  sync  pulses  between  vertical  fields

3-15

Summary of Contents for 2246 1Y

Page 1: ...TEKSERVICE MANUAL HWhMh S M 2 4 6 MO A B M w B TABLEiW W i OSCILLOSCOPE SN B 700100 and ABOVE 2246 1Y 2R SN B100100 and ABOVE 2246 M O D A Tektronix COMMOTED TO EXCELLENCE ...

Page 2: ...eet Tektronixpart number 070 6332 00 are required to fully service the 2246 2R oscilloscope i WARNING The following servicing instructions are for use by qualified service personnel only To avoid personal injury do not perform any servicing unless you are qualified to do so Refer to the Safety Summary prior to performing any service I r Please check for CHANGE INFORMATION at the rear of this manua...

Page 3: ...nd price change privileges are reserved INSTRUMENT SERIAL NUMBERS Each instrument has a serial number on a panel insert tag or stamped on the chassis The first two digits designate the country of manufacture The last five digits of the serial number are unique to each instrument The country of manufacture is identified as follows B000000 Tektronix Inc Beaverton Oregon U S A E200000 Tektronix Unite...

Page 4: ...SCRIPTION 3 1 INTRODUCTION 3 1 VERTICAL INPUTS Diagram 1 3 1 VERTICAL PREAMPS AND OUTPUT AMPLIFIER Diagram 2 3 2 A AND B TRIGGER SYSTEM Diagram 3 3 2 DISPLAY AND TRIGGER LOGIC AND PROCESSOR INTERFACE Diagram 4 3 3 A AND B SWEEPS AND DELAY COMPARATORS Diagram 5 3 4 HORIZONTAL OUTPUT AMPLIFIER Diagram 6 3 4 Z AXIS CRT PROBE ADJUST AND CONTROL MUX Diagram 7 3 4 MEASUREMENT PROCESSOR Diagram 8 3 5 REA...

Page 5: ...OCEDURE 4 4 DISPLAY 4 5 TRACE ROTATION 4 5 GEOMETRY 4 5 VERTICAL 4 6 Input COUPLING Functional Check 4 6 CH 1 and CH 2 VOLTS DIV Trace Shift 4 6 CH 3 and CH 4 VOLTS DIV Trace Shift 4 7 CH 1 and CH 2 VAR VOLTS DIV Trace Shift 4 7 CH 1 and CH 2 Input COUPLING Trace S h ift 4 7 CH 2 INVERT Trace S h ift 4 7 CH 1 and CH 2 VAR VOLTS DIV Range 4 7 Low Frequency Linearity 4 8 CH 1 and CH 2 Vertical Defle...

Page 6: ...earity 4 19 A and B Magnified Timing Accuracy 4 19 Delay Time Jitter 4 20 Delay Time Accuracy 4 21 Delay Time Position Range 4 21 X Axis Gain A ccuracy 4 21 X Y Phase D ifference 4 22 X Axis Bandwidth 4 22 TIME AND CURSORS MEASUREMENTS 4 23 k SEC H and k 1 SEC M Cursor Accuracy 4 23 Delta Time A ccu ra cy 4 23 k phase H Cursor Accuracy 4 24 k VOLTS H Cursor Accuracy 4 24 rh v o lts H Cursor Accura...

Page 7: ...Vertical Output Gain R703 and Readout Vertical Centering R260 5 7 CH 1 Step Balance R12 5 7 CH 2 Step Balance R22 ___ 5 8 CH 3 Step Balance R141 5 8 CH 4 Step Balance R161 5 8 CH 1 MF LF Gain R13 and Compensation C l 5 8 CH 1 Input Capacitance Cl 14 5 8 CH 1 Input Compensation X I0 C 11 5 8 CH 1 Input Compensation X I00 C IO 5 8 CH 1 Gain R211 5 8 CH 2 MF LF Gain R23 and Compensation C2 5 8 CH 2 I...

Page 8: ... 6 4 TROUBLESHOOTING 6 5 INTRODUCTION 6 5 TROUBLESHOOTING A ID S 6 5 TROUBLESHOOTING EQUIPMENT 6 6 TROUBLESHOOTING TECHNIQUES 6 6 INTERNAL TESTING CAPABILITIES 6 10 SERVICE MODE 6 11 TROUBLESHOOTING HINTS BY DIAGRAM 6 19 TROUBLESHOOTING MEASURE MENT ERRORS 6 25 CORRECTIVE MAINTENANCE 6 34 INTRODUCTION 6 34 MAINTENANCE PRECAUTIONS 6 34 OBTAINING REPLACEMENT PARTS 6 34 REPACKAGING FOR SHIPMENT 6 35 ...

Page 9: ... test failure c o d e s 6 10 6 2 Initial SERVICE MENU 6 11 6 3 SERVICE MENU with DIAGNOSE choice selected 6 12 6 4 Main board rem oval 6 44 6 5 Delay line connections to top of Main board 6 45 9 1 Color codes for resistors 9 2 Semiconductor lead configurations 9 3 Locating components on schematic diagrams and circuit board illustrations 9 4 Simplified 2246 1Y and 2246 Mod A block diagram 9 5a Deta...

Page 10: ... Mode Selection Control Bits 3 28 3 20 Peak Volts Detection Mode Logic 3 28 3 21 Z Axis Switching Logic 3 30 3 22 A Sweep Timing Selections 3 34 3 23 B Sweep Timing Selections 3 35 3 24 HD0 and HD1 L o g ic 3 37 Page 3 25 Front Panel Multiplexer Channel Select B its 3 41 3 26 Measurement Processor Signals 3 44 3 27 Position Enable Bit Assignment 3 49 3 28 Field and Mixer Attribute Bit Assignment 3...

Page 11: ... For maximum input voltage see Table 1 1 Danger Arising From Loss of Ground Upon loss of the protective ground connection all accessible conductive parts including knobs and controls that may appear to be insulating can ren der an electric shock Use the Proper Power Cord Use only the power cord and connector specified for your product Use only a power cord that is in good condition For detailed in...

Page 12: ...wer On Dangerous voltages exist at several points in this product To avoid personal injury do not touch exposed connections or components while power is on Disconnect power before removing protective panels soldering or replacing components Power Source This product is intended to operate from a power source that does not apply more than 250 volts rms between the supply conductors or between eithe...

Page 13: ...2246A Service 7062 01 X The 2246 1Y or 2246 Mod A Portable Oscilloscope ...

Page 14: ...rsors provide accurate voltage time frequency and phase measurements measurement values are dis played at the top of the crt The measurement features include voltage measure ments for Peak Peak Peak to Peak and average DC or positionable cursors for measuring voltage dif ference time difference frequency and phase SmartCursors that visually track voltage measure ments trigger levels and ground can...

Page 15: ... at an ambient temperature between 10 C and 55 C unless otherwise noted Items listed in the Performance Requirements column are verifiable qualitative or quantitative limits that define the measurement capabilities of the instrument Environmental characteristics are given in Table 1 2 This instrument meets the requirements of MIL T 28800D for Type III Class 3 Style D equipment as described in this...

Page 16: ... div to 5 V div Dc to 100 MHz at the input BNC and with a 10X probe AC Coupled Lower 3 dB Point IX Probe 10 Hz or less 10X Probe 1 Hz or less Step Response 5 division step Rise Time 2 mV div to 5 V div 3 5 ns or less calculated 3 Aberrations Positive Going Step 5 mV div to 0 5 V div 5 5 5 p p or less 1 V div to 5 V div 10 10 10 p p or less Negative Going Step Add 2 to all positive going step speci...

Page 17: ...or more 34 dB 50 1 or more Channel isolation tested with eight division input signal Trace Shift as VAR VOLTS DIV is Turned 1 division or less Invert Trace Shift 1 division or less Trace Shift Between VOLTS DIV Switch Positions 0 2 division or less Trace Shift Between GND and DC input Coupling 10 C to 35 C Less than 0 5 mV 35 C to 55 C Less than 2 mV a Input Characteristics Resistance 1 M fl 2 a C...

Page 18: ...probe Step Response 5 division step Rise Time 3 5 ns or less calculated 3 Delay Match CH 3 to CH 4 Less than 400 ps difference Trace Shift Between VOLTS DIV Settings 1 division or less Channel Isolation attenuation of deselected channel 34 dB or more at 100 MHz Channel isolation tested with eight division input signal Input Characteristics Resistance 1 M fi 2 3 Capacitance 20 pF 2 pF a Maximum Inp...

Page 19: ... divisions CHOP Mode Clock Rate 625 kHz 10 a Delay Match CH 1 or CH 2 to CH 3 or CH 4 Less than 800ps difference HORIZONTAL DEFLECTION SYSTEM Sweep Range A Sweep 0 5 s div to 20 ns div in a 1 2 5 sequence 3 X I0 magnifier extends maximum sweep speed to 2 ns div B Sweep 5 0 ms div to 20 ns div in a 1 2 5 sequence X I0 magnifier extends maximum sweep speed to 2 ns div Accuracy 15 C to 35 C Unmagnifi...

Page 20: ...he center graticule X Y Displays At least 13 divisions 3 X I0 Magnifier Expands the normal sweep by ten times around that portion of the sweep positioned at the center vertical graticule line 3 Registration XI O t o X I 2 divisions or less shift Variable Control Range Continuously variable between calibrated SEC DIV settings Extends both the A and B sweep time per division by at least a factor of ...

Page 21: ...ove upper 3 dB cutoff frequency of 70 kHz LF REJECT 0 35 division from 100 kHz to 25 MHz increasing to 1 0 division at 100 MHz attenuates signals below the lower 3 dB cutoff frequency of 50 kHz AC 0 35 division from 50 Hz to 25 MHz increasing to 1 0 division at 100 MHz attenuates signals below the lower 3 dB cutoff frequency of 10 Hz TV LINE TV FIELD 0 5 division of composite sync will achieve a s...

Page 22: ...st SELF CAL For maximum performance a recent SELF CAL is recommended VOLTMETER FUNCTIONS DC VOLTS Accuracy 0 5 of reading 2 of the VOLTS DIV setting 250 jxV Normal Mode Rejection Ratio Greater than 50 dB at 50 or 60 Hz PLUS or MINUS Peak Accuracy Full Bandwidth 25 Hz to 25 MHz 2 0 of reading 15 of one vertical division 1 mV Greater Than 25 MHz to 100 MHz 90 MHz at 35 C to 55 C 0 5 dB 3 dB 1 mV Fol...

Page 23: ...e vertical division 0 5 mV Gated Region Minimum Width when gated 0 2 division 50 ns or less CURSOR FUNCTIONS K SEC l manually position cursors Accuracy 0 5 s div to 0 1 j s div 0 5 of reading 2 of the SEC DIV setting 50 ns div to 20 ns div 1 2 of reading 2 of the SEC DIV setting fc 1 SEC H manually position cursors Accuracy Readout calculated from SEC 1 cursor positions k VOLTS H manually position...

Page 24: ...ally displayed measurement value Within 0 05 vertical division TRACK GROUND Position Accuracy Cursor position on waveform versus baseline displayed with grounded input Within 0 05 vertical division DELTA TIME FUNCTIONS DELTA TIME Accuracy 15 C to 35 C 1 0 of reading 1 0 of one division of the A Sweep 10 C to 15 C and 35 C to 55 C 2 0 of reading 1 0 of one division of the A Sweep DELTA 1 TIME Accur...

Page 25: ...ch DC Coupled 3 degrees from dc to 100 kHz EXTERNAL Z AXIS INPUT Active Region Lower Threshold intensity decreases above this voltage 1 8 volts or less Signal Required to Modulate an A or B Trace of Normal Intensity 3 8 volts or less usable frequency DC 10 MHz External Z Axis signal does not affect the readout or the intensified zone intensity Maximum Input Voltage 30 V dc peak ac 30 V p p ac at 1...

Page 26: ...thium batteries POWER SOURCE Line Voltage Range 90 Vac to 250 Vac a Line Frequency 48 Hz to 445 Hz 3 Line Fuse 2 A 250 V slow blow 3 Maximum Power Consumption 100 Watts 155 VA a CRT DISPLAY Display Area 8 by 10 cm a Geometry Vertical 1 2 minor 0 1 div at 8 by 8 cm centered area 1 minor 0 2 div at 8 by 10 cm centered area Horizontal 1 2 minor 0 1 div at 6 by 10 cm centered area 1 minor 0 2 div at 8...

Page 27: ...tion 2246 1Y and 2246 Mod A Service 10 kHz 50 kHz 100 kHz 500 kHz 1 MHz 100 MHz FREQUENCY 6555 21 Figure 1 1 Maximum input voltage vs frequency derating curve for the CH 1 CH 2 CH 3 or CH 4 input connectors 1 14 ...

Page 28: ...be removed before operating during step 7 Altitude Operating To 4 572 m 15 000 ft Maximum operating temperature decreases 1 C per 1000 ft above 5000 ft Non Operating To 15 240 m 50 000 ft Exceeds requirements of MIL T 28800D paragraph 4 5 5 2 Humidity Operating and Non operating Five cycles 120 hours referenced to MIL T 28800D paragraph 4 5 5 1 2 2 for type III class 3 instruments Non operating an...

Page 29: ...ch p p 4 g at 55 Hz with frequency varied from 10 Hz to 55 Hz in 1 minute sweeps Hold from 10 minutes at 55 Hz in each of the three major axes All major resonances must be above 55 Hz Meets requirements of MIL T 28800D paragraph 4 5 5 3 1 Bench Handling Test cabinet on and cabinet off Each edge lifted four inches and allowed to free fall onto a solid wooden bench surface Meets requirements of MIL ...

Page 30: ... 11 7 kg 25 8 lb Overall Dimensions Height With Feet and Accessories Pouch empty See Figure 1 2 Dimensional drawing Approx 176 5 mm 6 95 in Without Accessories Pouch 164 mm 6 46 in Width with handle 362 mm 14 26 in Depth With Front Cover on 445 3 mm 17 53 in With Handle Extended 521 mm 20 51 in Cooling Forced air circulation no air filter Finish Tek Blue pebble grain finish painted on aluminum cab...

Page 31: ... of mounting rail to bottom of cabinet 89 mm 3 5 in From cabinet top or bottom to respective front panel mounting holes 38 mm 1 5 in Between front panel mount ing holes 102 mm 4 0 in Width Overall 483 mm 19 0 in Between mounting hole centers 464 mm 18 3 in Between outer edges of mounting rails 427 mm 16 8 in Between handle centers 450 mm 17 7 in Depth Overall 516 mm 20 31 in Front panel to rear of...

Page 32: ...Clearance dimensions Height 178 mm 7 in Width 448 mm 17 5 8 in Depth 508 mm 20 in Cooling Forced air circulation no air filter Finish Tek Blue pebble grain finish painted on aluminum cabinet Construction Aluminum alloy chassis front panel frame and rear support Plastic laminate front panel Glass laminate circuit boards 1 19 ...

Page 33: ...Specification 2246 1Y and 2246 Mod A Service 6083 02 1 20 Figure 1 2 Dimensional outline drawing standard cabinet ...

Page 34: ...ice I 2 0 in 51 mm CLEARANCE RECOMMENDED AT REAR AND SIDES FOR COOLING AND INSTRUMENT CONNECTIONS 16 8 in 427 mm 17 7 in 450 mm TOP VIEW LEFT SIDE VIEW FRONT VIEW REAR VIEW 6332 01 1 21 Figure 1 3 Dimensional outline drawing rackmount cabinet ...

Page 35: ......

Page 36: ...r source outlet that has a properly grounded protective ground contact Plug C onfiguration O ption Power C ord Plug Type Line V oltage Reference Standards1 3 U S Std U S 120V 120V ANSI C73 11 NEM A 5 1 5 P IEC 83 UL 198 6 A t EURO 220V 220V CEE 7 II IV VII IEC 83 IEC 127 A2 U Ka 240V 240V BS 1363 IEC 83 IEC 127 A3 A ustralian 240V 240V AS C l 12 IEC 127 A4 North A m erican 240V 240V ANSI C73 20 NE...

Page 37: ...utine If the instrument fails to come on and operate normally the Trigger MODE LEDs may be flashing to indicate the circuit location of a start up error Also under certain conditions the Tektronix Part Number of the device where the error exists may be displayed on the screen Refer to Troubleshooting in the Maintenance section of this manual for an explanation of the start up error codes When the ...

Page 38: ...w state vary among individual devices For specific device characteristics of common parts refer to the manufacturer s data book Hybrids The Channel 1 and Channel 2 attenuators and input buffers are hybrid devices combining thick film and semiconductor technologies These devices are made with interconnected circuitry on a single ceramic carrier and have improved performance characteristics over a m...

Page 39: ...to the summing node during text and cursor displays is applied to the Delay Line Driver There it is buffered and compensated to drive the vertical delay line The delay line produces enough delay in the signal to permit the trigger circuitry to start the sweep before the vertical signal arrives at the crt deflection plates and the rising edge of the triggering signal may be viewed From the output o...

Page 40: ...al X I0 Magnification on or o ff X Y signal X Y or Y T displays and the VERT COMP ENABLEsignal when vertical SELF CAL is done The average dc voltage of a signal being measured is found by filtering all the ac signal components from the measurement channel signal That dc level is then applied to the B Trigger Level Comparator where its value is determined by successive approxi mation as described e...

Page 41: ...l for positioning the display The X Y signal controlling U301B reduces the range of the Horizontal POSITION signal delivered to the Hori zontal Preamplifier when in the X Y display mode Five manual adjustments are associated with the Horizontal Preamplifier They are the X I0 and XI gain the Readout gain the X Axis signal gain and Mag Registration Mag Registration compensates for offset between X I...

Page 42: ...trol data into 24 bit or 32 bit shift registers The outputs of these registers control such things as attenuator set tings preamplifier gains sweep timing and trigger operating modes all circuit operating functions that either change with front panel settings only or at a slow rate Scanning of the front panel controls and lighting of the front panel LEDs that back light the buttons is under contro...

Page 43: ...of the comparator AD COMP is applied to the Data Buffer U2515 on Diagram 8 POWER SUPPLY Diagram 12 The low and high voltages required to power the 2246 1Y and 2246 Mod A are produced by a high efficiency switching power supply Input ac voltage from 90 to 250 volts and from 48 to 445 Hz is con verted to a dc voltage that powers a preregulator circuit The preregulator supplies regulated power to an ...

Page 44: ... 7 CH 3 PREAMP 1 U230 CH 3 Preamplifier Gain 14 CH 4 PREAMP 1 U240 CH 4 Preamplifier Gain 13 ZERO HYST U431C B Trigger Comparator Hysteresis 11 RO FREEZE U509C Controls Readout for SELF CAL first bit loaded Input Coupling Signals applied to the CH 1 BNC connector are coupled to the CH 1 attenuator via the CH 1 Input Coupling circuit Switching logic for those con nections is shown in Table 3 2 Rela...

Page 45: ...al for application to the Vertical Preamplifier The input signal is applied to pin 2 fast path input and pin 4 slow path input of U112 from the 1 Mfl divider at the output of the high impedance attenuator Internal circuitry of U112 isolates the signal from loading of the low impedance attenuator and provides the slow path and fast path signal amplification The fast amplifier path quickly passes th...

Page 46: ...mplifiers is set to 10 mV per division The 1 2 5 scaling sequence for the remain ing VOLTS DIV switch settings is obtained by switch ing the high and low impedance attenuators Gain of the CH 3 and CH 4 preamplifiers is controlled by one bit each on pin 2 since there are only two scal ing settings 0 1 V and 0 5 V per division to select see Table 3 5 for the gain control bit states The internal circ...

Page 47: ...oltage between the positive and negative side of the delay line with no signal input is 0 V 0 5 V The differential signal voltage input to the delay line is about 29 mV per graticule division of deflection Biasing of the input transistor bases is supplied by R262 and R264 for Q250 and R263 and R265 for Q251 Two resistors in series are used to provide the power handling needed they are low wattage ...

Page 48: ...he display rela tive to the vertical position of the waveform The TRACE SEP EN and RO TR SEP EN signals operate the same as described for the channel enable and readout position enable signals A slight difference between the channel vertical position signals and the TRACE SEP signal is that TRACE SEP is attenuated more The higher value of R206 on pin 13 of U201 reduces the TRACE SEP range to 4 div...

Page 49: ...parator circuitry is contained on two integrated circuit devices U421 and U431 Within the devices is the logic circuitry that drives the selectable variables of Trigger SOURCE Trigger CPLG and Trigger SLOPE for both the A and the B Triggers Selection of the trigger variables is done by control bits generated by Display Sequencer U600 Diagram 4 The remaining portions of the circuitry shown in Diagr...

Page 50: ...e B Sweep or the output of the Measurement Signal Low Pass Filter when the DC measurement mode is active Table 3 6 Trigger Selection Logic Front Panel Latched Bit Values Description Coupling Selection SLOPE TS2 TS1 TSO A Sweep Mode U421 AUTO LEVEL AUTO NORM or SGL SEQ DC 0 0 1 0 DC Coupled NOISE REJ 1 0 1 0 DC Coupled Noise Reject HF REJ 0 1 0 1 HF Reject LF REJ 0 0 1 1 LF Reject AC 0 1 0 0 AC Cou...

Page 51: ...and slope of the trigger signal that produces a sweep trigger The comparator slope is set internally by the switching logic the Trigger comparison level is set using the front panel Trigger LEVEL control A fixed amount of hysteresis in the A Trigger Level Comparator prevents double triggering on signals accompanied by normal noise NOISE REJ coupling increases the hysteresis by a factor of four to ...

Page 52: ... peak detectors are comple mentary in that the positive peak detector tran sistors Q1101 Q1102 and Q1103 and the negative peak detector transistors Q1104 Q1105 and Q1106 are complementary types PNP NPN Both detectors are driven from the same input signal the positive peaks of the video signal forward bias Q1101 and the negative peaks forward bias Q1104 The operation of the positive peak detector i...

Page 53: ...the chop clock and an inter face to the on screen readout control logic The microprocessor interface of U600 provides the capability to serially load the internal control register write the internal read write memory do some limited real time control over a few sequencer functions and monitor status information The Display Sequencer contains a read write memory for storing the display states to be...

Page 54: ...ng clock input LFC Low frequency clock input A signal derived from the calibrator circuit is used for skewing the chop clock phase ROR Readout request input active low A low causes the CH 1 EN CH 2 EN CH 3 EN CH 4 EN HD1 HDO and TS outputs to all go low and allows the ROB input to have com plete control of the BLANK output If ROB is low when ROR goes low then the internal timing will be such that ...

Page 55: ...rst display state RAM address 000 In ALT VERT Mode all verti cal enable horizontal enable and trig source outputs are initialized in CHOP VERT Mode the horizontal enable and trig source outputs are initialized but the vertical enable outputs continue to cycle at the chop clock rate b It resets the EOSS end of single sequence flag c It resets the trigger holdoff timer e Used for initialization duri...

Page 56: ...t or when RESET is strobed while THO is high The encoding scheme is shown in Table 3 9 Table 3 9 Horizontal Display Mode Select Bits HD1 HDO SOURCE 0 0 Readout displayed 0 1 A Sweep displayed 1 0 B Sweep displayed 1 1 X Y mode DS Delay select output This output normally changes state on the rising edge of the THO output or when RESET is strobed while THO is high It may also be forced by the Measur...

Page 57: ...o write data into the RAM the first six bits are loaded into the control register with the RAM data word With A3 A2 A1 A0 0001 a negative going pulse on the WR input will write the data into RAM To set the RAM address the RAM load mode must be enabled In RAM load mode a low to high transition on the WR input with A3 A2 A1 A0 0010 will increment the RAM address by one There are eight consecutive RA...

Page 58: ...et the A Trigger SOURCE to alternate ZAP Setting this bit high forces the ZEN out put low This bit is low to allow normal opera tion of the ZEN output B1S2 B1S1 B1S0 B1 Trigger SOURCE select bits Bit encoding is the same as the encoding for the A Trigger SOURCE select bits B2S2 B2S1 B2S0 B2 Trigger SOURCE select bits Encoded the same as A Trigger SOURCE select bits except that code 111 does not se...

Page 59: ...single delay SSE SGL SEQ enable SSE 1 for single sequence mode or 0 for repetitive mode B ENDS A B ends A enable active high H4 H3 H2 HI HO Holdoff time Encoded as in Table 3 14 With the TEST pin held high for normal operation FSEL Chop frequency select bit With 10 MHz on the TC input pin FSEL 1 provides a chop frequency of 625 kHz FSEL 0 produces 1 25 MHz 625 kHz is used CBEN Chop blank enable bi...

Page 60: ...advance the vertical display enable outputs RAM bits RD5 RD4 and RD3 still determine the vertical channel displayed and RAM bit RDO marks the last display state in the sequence RAM bits RD2 and RD1 are not used in CHOP Mode Other circuitry clocked by the trigger holdoff pulse drives the horizontal display control outputs The same initialization procedure as described above for ALT Vertical Mode is...

Page 61: ...S HI HI HI HI c 0 1 1 HDO HI h LO HI LO HD1 LO HDO HI HI LO TS LO HD1 LO LO LO NSSS a f f f b c DS 1 i i i c 1 1 0 HDO HI h LO HI LO HD1 LO RDO HI HI LO TS LO HD1 LO LO LO NSSS a g g g b c DS h h h h c 1 1 1 HDO HI h LO HI LO HD1 LO HDD HI HI LO TS LO HD1 LO LO LO NOTES a NSSS Complete A Sweep cycles in a single sequence b Not applicable in single sequence mode c Signal state not affected by reado...

Page 62: ...o skip ahead by four TC clock periods on a rising edge of A GATE This skipping is gated on and off by applying a low frequency clock signal about 1 kHz from the Calibrator circuit to the LFC low frequency clock input pin Internally the LFC signal is divided by two and when the resulting square wave is high count skip ahead is enabled Readout Interface The Readout Interface accepts inputs from the ...

Page 63: ...c pin outs see Figure 3 3 BLANK Blanking input from the Display Logic 1C U600 HD1 HDO Horizontal display select inputs from the Display Logic 1C ZEN Z Axis enable input from the Display Logic 1C Active low BUSY Counter busy signal Not used in the 2246 1Y and 2246 Mod A ATRIG A Sweep trigger input EOAS End of A Sweep This signal goes high when the A Sweep ramp crosses its end of sweep threshold THO...

Page 64: ...high TDO Trigger data output Data to be read is selected via the A1 and AO inputs see Table 3 17 B GATE B Sweep gate output Starts the B Sweep ramp Active high BUB B Sweep unblanking output Active low C GATE Measurement gate output Not used externally in the 2246 1Y and 2246 Mod A Table 3 17 Trigger Logic IC Addressing Logic A1 AO Output of TDO pin Action when SIN Strobed 0 0 Strobed Volts Latch D...

Page 65: ...E will cause an externally generated pulse to be presented on the THO input thus completing the loop and allowing the A Sweep to free run auto level and auto triggered mode when the sweep is not triggered When ARUN is low the operation is similar except that after a pulse on the THO input A GATE won t go high until a low to high transition is presented on the A TRIG input triggered sweep mode For ...

Page 66: ... in the 2246 1Y and 2246 Mod A C GATE goes low if A GATE is high the DLY1 latch has been set the DLY2 latch is still reset and the MGE input is low Peak Volts Logic The peak volts logic detects the positive and nega tive peaks of the B TRIG signal It consists of a level sensitive latch that can be gated by the C GATE signal the A GATE signal the DLY12 latch output or continuously The latch may be ...

Page 67: ...t pass signals to the Display Sequencer 1C U600 at CMOS highs and lows about 3 9 V and 0 V respectively in this application logic level trans lators are required That job is done by an identical translator circuit for each of the three signals that must be sent The circuit action of U603C Q604 and Q605 the A GATE translator is described The single ended A GATE output signal of U602 at pin 14 is ap...

Page 68: ...ng current pass transistor Q307 via operational amplifier U304 When the SEC DIV VAR control is in its detent calibrated posi tion diode CR301 is reverse biased and the divider formed by R311 and R314 between the 2 5 V refer ence and ground precisely sets the input voltage to the noninverting input of U309B With a fixed voltage output from U309B the current through Q301 and R313 is also a fixed val...

Page 69: ...Theory of Operation 2246 1Y and 2246 Mod A Service 15 V 6081 07 3 32 Figure 3 4 Simplified Sweep Circuit ...

Page 70: ...d Sweep time may be divided into three periods baseline run up and retrace see Figure 3 5 Sweep start and length of sweep run up is controlled by the A GATE and A GATE signals from the Trigger Logic 1C U602 Diagram 4 A GATE SIGNALS The A GATE and A GATE signals are applied via 8 2 V zener diodes VR301 and VR302 to the bases of Q308 and Q309 in a dif ferential amplifier configuration The input circ...

Page 71: ...1 1 0 1 0 2 0 jxs 2 jxs 2 mA II 0 1 0 1 1 0 4 0 jxs 5 jxs 800 jxA II 0 1 0 0 1 0 10 xs 10 jxs 400 jxA II 0 1 1 0 0 1 20 jxs 20 jxs 200 jxA II 0 1 0 1 0 1 40 jxs 50 xs 80 jxA II 0 1 0 0 0 1 100 jxs 100 jxs 40 jxA II 0 1 1 0 0 0 200 jxs 200 jxs 20 jxA II 0 1 0 1 0 0 400 jxs 500 jxs 8 jxA II 0 1 0 0 0 0 1 0 ms 1 ms 4 mA C307A 1 0 1 0 1 0 2 0 ms 2 ms 2 mA II 1 0 0 1 1 0 4 0 ms 5 ms 800 jxA II 1 0 0 0 ...

Page 72: ...level reaches the com parison level the A SWP END signal goes high That signals the Trigger Logic 1C U602 to end the A GATE signal and the sweep is switched to the retrace state The sweep ramp is also being fed back to the base of Q303 At the point in the ramp that the base voltage of Q303 exceeds that on the base of 0302 the 2 V baseline reference Q303 is biased off and Q302 conducts This biasing...

Page 73: ... when that level is reached The sweep end signals are applied to the Trigger Logic 1C U602 so that device knows when the sweeps are done The Trigger Logic 1C then switches the states of the A GATE or the B GATE signal as appropriate to reset the sweep circuitry to its baseline level Delay Time Comparators When the A Sweep ramp runs its amplitude is com pared against two delay levels by the compara...

Page 74: ...I0 magnified sweep when high or normal sweep when low Mag nified mode is selected when in X Y hori zontal mode X Pin 7 X AXIS This is the X Axis signal input when in X Y horizontal mode The signal source is the CH 1 trigger signal from U421A Diagram 3 Adjustment of R827 sets the gain of the X Axis signal HDO Pin 8 Pin 8 HDO and pin 11 HD1 are logic lines that select the horizontal input signal to ...

Page 75: ...e feedback resistor C807 adjusts the 2 ns sweep timing for its best linearity Impedance matching to the deflection plate and additional signal damping is provided by R802 As the gate voltage of Q802 increases to follow the input ramp signal the drain voltage goes negative from about 87 V toward the 15 V source voltage At the same time the signal on the gate of complementary FET Q801 is reducing th...

Page 76: ...uto Focus Amplifier outputs to the crt grids Direct coupling of the Z Axis and Auto Focus signals to the crt control grid is not employed because of the high potential differences involved Refer to Figure 3 6 during the following discussion Z AXIS DC RESTORER Ac drive to the Z Axis Dc Restorer circuit is obtained from pin 12 of T2204 The drive voltage has a peak amplitude of about 130 V at a frequ...

Page 77: ...immer Conversely if less charge is added the control grid voltage level becomes closer to the cathode voltage level and the display becomes brighter During periods that C2712 is charging the crt control grid voltage is held constant by the long time constant discharge path of C2711 through R2724 Fast rise and fast fall transitions of the Z Axis out put signal are coupled to the crt control grid th...

Page 78: ...ng the voltage measurement constants during the SELF CAL routine Ground is connected to the vertical input when GND Input Coupling is selected Five voltages are selected from a precision voltage divider R921 and multiplexed through U931 to the vertical inputs at the appropriate time during the SELF CAL routine Selection is controlled by three binary coded lines VOLT CAL 0 1 2 from U303 Those contr...

Page 79: ...m adjustment R2788 varies the voltage level on the astigmatism grid to obtain the best focused display over the whole face of the crt MEASUREMENT PROCESSOR Diagram 8 The Measurement Processor circuitry includes the Processor U2501 the System RAM U2521 the System ROM U2519 communication bus latches and transceivers the Address Decoding circuitry and the Power On Reset 1C U2502 Power On Reset The 5 ...

Page 80: ...ts Some measurements are knob driven They are k SEC M k 1 SEC H k PHASE M k VOLTS H r h VOLTS H When these measurements are running a new digital value is displayed and the cursor or delay zone position is changed only when the user changes the setting of one of the continuous rotation CURSOR TIME POSITION controls Other measurements are waveform driven They are DC PEAK PEAK PK PK GATED PEAK GATED...

Page 81: ...oth buffers cannot be active at the same time Bus 1 U2514 is the eight bit data com munication bus and Bus 0 U2515 uses seven bits to communicate single bit data to the Measurement Processor On the Bus 0 ADO signal line the Measurement Processor sends the serial MB DATA to each of the operating mode Shift Registers and to SLIC U600 and FLIC U602 Additional arbitration is provided by U2503C to prod...

Page 82: ... calibration constants are lost for some other reason the instrument will do a SELF CAL at power on This restores accuracy to the instrument unless the problem is a RAM fault in which case the instrument cannot SELF CAL but the battery circuitry should be checked and the bat tery replaced if necessary Also the SELF CAL routine should be run again after the instrument is warmed up to generate accur...

Page 83: ... link by comparing bytes sent to bytes received query the Character Code RAM con tents and check the Character ROM identification header The replies are all sent between the Readout Processor and Measurement Processor a byte at a time as follows 1 The Readout Processor waits until RO INTR is asserted the Measurement Processor is ready to receive 2 The Readout Processor writes a byte to tri state l...

Page 84: ... position 6 Given the row and column containing the character and the vertical and horizontal position of the dot U2412 generates the vertical analog current for the dot and U2413 the horizontal analog current 7 U2414 sets up the mixing for the vertical out put signal see Readout Position Mixer 8 U2415 sets up the mixing for the horizontal output signal Interrupt Request Latch When the Measurement...

Page 85: ...ore the start of each character display When RO RUN goes low the start of a refresh cycle the reset is released and the clock signal from the Dot Refresher U2410 clocks the output of the counter through the number of counts needed to address all the dots in a character stored in the Character Dot Position ROM U2408 Character Dot Position ROM The Dot Refresher also asserts the POS EN signal low pin...

Page 86: ...ition value to mix with the horizontal output signal to define the readout position on the display When positionable text is displayed such as time cursors the cursor position signal is mixed with the horizontal character position signal That summed signal then defines horizontally where a character dot is displayed on the crt None of the readout text or cursors is positionable using the Horizonta...

Page 87: ...l outputs to values representing the vertical and horizontal position of a pixel within the character and then unblanking the Z Axis Multiplexers U2414 and U2415 are ganged electronic switches that mix current and voltage settings Verti cal Readout DAC U2412 vertical text generator provides an output current from pin 2 that is proportionate to the vertical position of the pixel being displayed the...

Page 88: ...ms The timing is fast enough to prevent flicker of the LEDs and to catch a push button closure LED Refresh Assume LED column ASO is being refreshed First the LED Cathode Register U2524 is loaded with a data byte from the Measurement Processor That byte defines the LEDs that are on for that column and the outputs of Cathode Driver U2525 for the on LEDs are low Then a high on the DO bit of the Meas ...

Page 89: ...ontrol and to find out certain analog voltage levels that it must have to do its con trol and measurement functions Pot Multiplexer Latch Latch U2313 latches data from the data bus D0 D7 to control multiplexers U2308 and U2309 on this diagram and U506 on Diagram 7 Front Panel Control Multiplexers Multiplexers U2308 and U2309 controlled by the Measurement Processor via Pot Mux Latch U2313 select th...

Page 90: ...ding Voltage from the high voltage winding is further multiplied and converted to dc voltage for the crt anode cathode and intensity grid voltages Both overvoltage and overcurrent protection are provided to protect the oscilloscope circuitry from further damage if a circuit component fails Ac Input Applied source voltage is input to the Primary Power Rectifier via surge protection circuitry and no...

Page 91: ...Theory of Operation 2246 1Y and 2246 Mod A Service 6081 12 6557 99 3 54 Figure 3 9 Power Supply block diagram ...

Page 92: ... Voltage Control transistor Q2208 to produce about 0 6 mA to keep the current into and out of the summing node balanced The actual current through R2206 is the output voltage 44 V across C2203 divided by the resistance value of R2206 100 kfl or about 0 4 mA SOFT START At the initial turn on of the instru ment C2203 is discharged If no action were taken to prevent it the initial charging current to...

Page 93: ...V from the Primary Power Rectifier and the 44 V supply is up and driving a circuit load When the Preregulator 1C turns on Q2201 the drain of Q2201 is immediately clamped to 44 V This forces 116 V 160 V 44 V across pins 6 and 7 of T2203 Current begins increasing linearly in that coil as Q2201 supplies current to the 44 V supply With the one end of C2201 clamped to 44 V and C2201 being charged to 16...

Page 94: ... the other half of the primary winding of T2204 from pin 8 to the center tap pin That voltage adds to the 41 V from pins 9 to 11 to produce a potential of 82 volts across the primary of switching transformer T2205 Current rapidly ramps up through the primary of T2205 and induces a positive feedback base current in one half of its center tapped secondary that keeps Q2210 turned on Current in the ot...

Page 95: ...3 3 kV to the crt anode via a high voltage insulated connecting lead and the 2 7 kV supplied to the crt cathode focus grid and intensity grid The 2 7 kV supply is filtered by a two section capacitive input RC filter A neon lamp across the second section of the filter provides protection against arcing if there is a failure that can cause a large difference of potential to develop between the crt h...

Page 96: ... 2000 hours of operation or once each year if used infrequently If the checks indicate a need for readjustment or repair refer the instrument to a qualified service person NOTE The silver oxide batteries used in the 2246 1Y instruments serial numbered B714999 and below MUST BE REPLACED AT LEAST EVERY 12 MONTHS to ensure proper opera tion of the instrument PREPARATION This procedure is divided into...

Page 97: ...latness 0 5 Signal source for gain and transient response checks and adjustments TEKTRONIX PG 506A Calibration Generator 3 Time Mark Generator Marker outputs 5 ns to 0 5 s Marker accuracy 0 1 Trigger output 1 ms to 0 1 is tim e coincident with markers Horizontal checks and adjustments Display adjustment Time cursor checks TEKTRONIX TG 501A Time Mark Generator a Function Generator Range less than 1...

Page 98: ...Test Oscilloscope Bandwidth 20 MHz Z Axis response adjustment TEKTRONIX 2246A Dual Input Coupler Connectors BNC female to dual BNC male Signal interconnection Tektronix Part Number 067 0525 02 T Connector Connectors BNC Signal interconnection Tektronix Part Number 103 0030 00 Precision Normalizer Input resistance 1 M Cl Input capacitance 20 pF Input capacitance adjustments Tektronix Part Number 06...

Page 99: ... Trigger Sensitivity 4 15 3 25 MHz Trigger Sensitivity 4 15 4 100 MHz Trigger Sensitivity 4 15 5 100 MHz NOISE REJ Trigger Sensitivity 4 16 6 Single Sweep Mode 4 16 7 Trigger LEVEL Control Range 4 16 8 TV Field Trigger Sensitivity 4 17 9 TV Line Trigger Sensitivity 4 17 10 Line Trigger Functional C h e ck 4 17 HORIZONTAL 1 A and B Sweep Length 4 18 2 Horizontal POSITION Range 4 18 3 VAR SEC DIV Ra...

Page 100: ...l off Dress d ADJUST trace parallel to center horizontal graticule line 2 Geometry a Connect time mark generator TG 501 to CH 1 via a 50 BNC coaxial cable and a 50 f l BNC termination b Set generator for 0 2 p s time marks c Position the bottom of the CH 1 signal below the bottom graticule line d CHECK deviation of any vertical line within the center eight horizontal divisions does not exceed 0 1 ...

Page 101: ...Off Set Vertical MODE to CH 1 CH 2 o ff c Connect calibration generator PG 506 STD AMPL output to the CH 1 input via a 50 ft BNC coaxial cable d Set calibration generator to STD AMPL and AM PLITUDE to 5 V e Position the bottom of the signal to the center horizontal graticule line f Set CH 1 Input COUPLING to AC g CHECK display is roughly centered about the center horizontal graticule line h Move t...

Page 102: ...e line g Set CH 2 VAR VOLTS DIV fully CCW h CHECK trace shift does not exceed one division i Set CH 2 VAR VOLTS DIV to detent calibrated position 5 CH 1 and CH 2 Input COUPLING Trace Shift a Position trace to center graticule line b Set CH 2 Input COUPLING to DC c CHECK trace shift does not exceed 0 25 division d Set Vertical MODE CH 1 CH 2 off CH 1 Input COUPLING GND e Position trace to center gr...

Page 103: ... 2 1 divisions h Repeat the procedure for CH 2 9 CH 1 and CH 2 Vertical Deflection Accuracy a Set CH 2 VOLTS DIV to 2 mV b Set calibration generator AMPLITUDE to 10 mV c Position the trace two graticule lines below the cen ter graticule line d CHECK all positions of the VOLTS DIV settings for correct signal to graticule accuracy using the set tings in Table 4 2 for the checks e Set calibration gen...

Page 104: ...e ADD signal amplitude is 0 08 di vision less than half a minor graticule division or less excluding trace width sweep will free run g Disconnect the test setup from the 2246 1Y or 2246 Mod A 12 a b c d e f g h i J k m Vertical POSITION Range all channels Set A SEC DIV CH 1 Vertical MODE CH 1 VOLTS DIV CH 2 INVERT SCOPE BW CH 1 and CH 2 Input COUPLING 0 1 ms On ADD off 1 V Off Off AC Connect level...

Page 105: ...d CH 2 CH 4 off DC 0 1 V 20 ns CH 3 Vertical MODE CH 3 and CH4 CH 1 off Trigger SOURCE CH2 b Move the CH 3 trigger signal to the CH 2 input and the CH 1 signal to the CH 3 input c Superimpose CH 3 and CH 4 waveforms at the center graticule line using the HORIZONTAL POSITION control if necessary d CHECK that the leading edges of the two waveforms have less than 0 2 horizontal division separation at...

Page 106: ...TS DIV set tings of 10 mV through 0 2 V Remove the 10X 50 n attenuator when necessary to maintain a five division display g Repeat the procedure for CH 2 h Disconnect the test setup b Connect leveled sine wave generator SG 503 output to the CH 3 input via a 50 n precision BNC coaxial cable and a 50 n BNC termination 19 SCOPE BW Bandwidth Limit Accuracy a Set c Set the generator output for a six di...

Page 107: ... Disconnect the test setup p Set both CH 1 and CH 2 VAR controls to their calibrated fully clockwise in detent positions q Disconnect the test setup 21 Channel Isolation a Set Vertical MODE CH 1 and CH 2 ADD off CH 2 INVERT Off CH 1 CH 2 CH 3 and CH 4 VOLTS DIV 0 1 V Trigger SOURCE CH 1 b Connect the leveled sine wave generator SG 503 output to the CH 1 input via a 5 0 fi pre cision BNC coaxial ca...

Page 108: ...ols are rotated through their ranges NOTE c Release the BEAM FIND button It may be necessary to adjust the TRIGGER LEVEL control to obtain a triggered display d Set CH 1 Input COUPLING to AC e CHECK display amplitude is 4 2 division or more f Set Vertical MODE to CH 2 CH 1 off g Repeat the procedure for CH 2 h Disconnect the test equipment from the 2246 1Y or 2246 Mod A 23 Vertical ALT and CHOP Mo...

Page 109: ...lay e CHECK that the display is stably triggered with DC HF REJ and AC Trigger CPLG and that the display will not trigger on NOISE REJ or LF REJ Trigger CPLG f Set Trigger CPLG A B SELECT Trigger MODE Trigger SOURCE Trigger SLOPE Horizontal MODE B SEC DIV DELAY Time B INTEN DC B Trigger NORM VERT _v positive B 0 5 ms 70 000 minimum delay time For viewable display NOTE b Connect function generator ...

Page 110: ...lay cannot be triggered in HF REJ or NOISE REJ CPLG by adjusting the Trig ger LEVEL control 3 25 MHz Trigger Sensitivity a Set Horizontal MODE A B SELECT Trigger CPLG A SEC DIV A A Trigger DC 50 ns k CHECK that the display is stably triggered with NOISE REJ Trigger CPLG but does not trigger with HF REJ CPLG The Trigger LEVEL control may be adjusted to improve display stability in NOISE REJ CPLG 4 ...

Page 111: ... a 7 0 division display amplitude at 50 kHz d Add a 10X and a 2X BNC attenuator before the 50 n BNC termination Display should stably trigger with AUTO LEVEL finding the correct trig ger level setting e Set A Trigger MODE NORM CH 1 Input COUPLING GND Trigger MODE SGL SEQ f CHECK that the Trigger READY LED turns on and remains on g Set A INTEN 3 4 fully CW CH 1 Input COUPLING DC see CHECK below h C...

Page 112: ...rator from the 2246 1Y or 2246 Mod A 10 Line Trigger Functional Check a Set d CHECK that a stable display is obtained e Set CH 2 INVERT On Trigger SLOPE T positive f CHECK that a stable display is obtained CH 2 VOLTS DIV CH 2 Input COUPLING A SEC DIV Trigger MODE Trigger SOURCE Trigger CPLG 0 1 V without a 10X probe attached DC 5 ms AUTO LEVEL LINE DC 9 TV Line Trigger Sensitivity a Set 20 p s TV ...

Page 113: ...0 0 BNC termination c Set generator for 2 ms time marks d CHECK sweep length of the A trace is greater than 10 divisions e Set B 1 ms B Trigger RUNS AFTER CCW to the lowest DELAY readout value For a visible display f CHECK the Delay Time readout is 70 000 ms and the B Sweep length is greater than 10 divisions 2 Horizontal POSITION Range a Set Horizontal MODE A Horizontal POSITION Fully CW b CHECK ...

Page 114: ...Accuracy Checks for the SEC DIV and tim e mark generator settings h Set SEC DIV to 20 ns i Set time mark generator for 20 ns time marks j Set Horizontal MODE B B INTEN For a viewable display k Repeat the CHECK procedure for all the B SEC DIV settings 6 A and B Magnified Timing Accuracy a Set time mark generator for 5 ns time marks b Set Horizontal MODE A SEC DIV Horizontal MODE Horizontal POSITION...

Page 115: ...S 50 A S 5 is 0 1 ms 10 A S 0 1 ms 10 is 0 2 ms 20 A S 0 2 ms 20 is 0 5 ms 50 A S 0 5 ms 50 is 1 ms 0 1 ms 1 ms 0 1 ms 2 ms 0 2 ms 2 ms 0 2 ms 5 ms 0 5 ms 5 ms 0 5 ms A Sweep only 10 ms 1 ms 10 ms 1 ms 20 ms 2 ms 20 ms 2 ms 50 ms 5 ms 50 ms 5 ms 0 1 s 10 ms 0 1 s 10 ms 0 2 s 20 ms 0 2 s 20 ms 0 5 s 50 ms 0 5 s 50 ms i Set 7 Delay Time Jitter Horizontal MODE A SEC DIV 2 ns with X I0 MAG on j Set ti...

Page 116: ...osition Range a Set time mark generator for 0 1 ms b Set A SEC DIV 1 ms B SEC DIV 5 jlS k OR DELAY control CCW to 70 000 c CHECK that the intensified zone is positioned at or before the second time mark d Turn the k OR DELAY control clockwise until the delay readout stops increasing largest number Horizontal MODE B SEC DIV TRACE SEP c Position the intensified zone to full left position countercloc...

Page 117: ...erator output for six divisions of signal display amplitude at 100 kHz d Set Horizontal MODE X Y CH 1 Input COUPLING GND e Position dot to graticule center f Set CH 1 Input COUPLING to DC g CHECK ellipse opening at the center is 0 3 division or less measured horizontally h Disconnect function generator 12 X Axis Bandwidth a Connect the leveled sine wave generator SG 503 output to the CH 1 input vi...

Page 118: ...N Vertical MODE CH 1 VOLTS DIV CH 1 and CH 2 Input COUPLING Horizontal MODE A SEC DIV A B SELECT Trigger MODE Trigger CPLG Trigger SOURCE Trigger SLOPE Trigger HOLDOFF CH 2 INVERT SCOPE BW FOCUS h CHECK that the readout is 7 940 ms to 8 060 ms i Press the TIME button to display the TIME menu j Set k 1 SEC H on k CHECK that the readout is 124 Hz 126 Hz 2 Delta Time Accuracy a Set A TIME DIV to 1 p ...

Page 119: ... Position the reference cursor to the bottom of the signal and the delta cursor to the top of the signal both cursors move with the k OR DELAY control f CHECK that the readout is between 0 495 V and 0 505 V 5 fh VOLTS Cursor Accuracy a Select MEASUREMENTS CURSORS menu then select rb VOLTS CURSORS b Position control to align the delta cursor with the top of the waveform c CHECK that the readout is ...

Page 120: ...generator Turn the power off before removing or inserting any plug in from the TM d power supply d Connect the calibration generator Std Ampl out e put to the CH 1 input via a 5 0 0 precision BNC f coaxial cable Set calibration generator for Std Ampl output of 50 mV dc Set CH 1 VOLTS DIV 10mV CH 1 Input COUPLING DC CHECK the readout is between 49 0 mV and 51 0 mV Set CH 1 VOLTS DIV to 0 1 V Set ca...

Page 121: ... 0 mV c Connect calibration generator Std Ampl output to the CH 2 input via a 5 0 fl precision BNC coaxial cable d Set calibration generator for Std Ampl output of 50 mV do e CHECK that the readout is between 47 0 mV and 53 0 mV f Set SCOPE BW on g CHECK the readout is between 47 7 mV and 52 3 mV h Set CH 2 INVERT On CH1 CH2 VOLTMETER PEAK i CHECK the readout is between 47 7 mV and 52 3 mV j Set S...

Page 122: ...axial cable Set the generator to Std Ampl output 50 mV d Set delta TIME POSITION to minimum intensified zone width e CHECK that the width of the dot is less than 0 2 division f Set the intensified dot to a positive peak of the displayed waveform g CHECK the readout is between 47 0 mV and 53 0 mV h Disconnect the test signal from the 2246 1Y or 2246 Mod A 4 27 ...

Page 123: ...e Set generator to Std Ampl output 5 V c Set A INTEN to maximum intensity d CHECK waveform display intensity starts decreasing at 1 8 V or less and the waveform is completely blanked out at 3 8 V e Set A INTEN to midrange f Disconnect the test equipment from the 2246 1Y or 2246 Mod A 2 PROBE ADJUST Output a Set CH 1 Vertical MODE 10 mV SEC DIV 0 2 ms SCOPE BW On b Connect a 10X probe to the CH 1 i...

Page 124: ...stics Tolerances given are appli cable only to the instrument under adjustment and do not include test equipment error Adjustments must be made at an ambient temperature between 20 C and 30 C and the instrument must have had a warm up period of at least 20 minutes PARTIAL PROCEDURES This procedure is divided in subsections to permit adjustment of individual sections of the instrument except the Po...

Page 125: ...TEP BALANCE CH 2 STEP BALANCE CH 3 STEP BALANCE CH 4 STEP BALANCE j _ i _ l J J _ l _J CH 1 MF LF GAIN S COMP n J CH 1 INPUT CAPACITANCE 1 1 CH 1 INPUT COMP X10 i 1 1 _ _ l J J _J _I CH 1 INPUT COMP XiOO 1 n n j z CH 1 GAIN CH 2 MF LF GAIN 8 COMP J _ j J _ CH 2 INPUT CAPACITANCE 1 n CH 2 INPUT COMP X10 1 1 I CH 2 INPUT COMP X100 J _ j y _J _i _1 CH 2 GAIN n 1 CH 3 MF LF COMP 1 CH 3 GAIN _J _j 1 J ...

Page 126: ... I C A L 1 Vertical Output Gain R703 And Readout Vertical Centering R260 5 7 2 CH 1 Step Balance R12 5 7 3 CH 2Step Balance R22 5 8 4 CH 3Step Balance R141 5 8 5 CH 4Step Balance R161 5 8 6 CH 1 MF LF Gain R13 And Compensation C l 5 8 7 CH 1 Input Capacitance Cl 1 4 5 8 8 CH 1 Input Compensation X I0 Cl 1 5 8 9 CH 1 Input Compensation X I00 CIO 5 8 10 CH 1 Gain R211 5 8 11 CH 2 MF LF Gain R23 And ...

Page 127: ...er Supply DC Levels R2252 a Connect a Digital Multimeter DMM negative lead to chassis ground Connect positive lead to first test point listed in Table 5 2 all test points on J1204 Main board b CHECK Voltage reading is within the range given in Table 5 2 c Move DMM positive lead to each of the other supply voltages in Table 5 2 and check that voltage ranges are within limits NOTE If all supply volt...

Page 128: ...l graticule line c ADJUST TRACE ROTATION front panel to align trace parallel with center horizontal graticule line 5 Geometry R2784 a Set CH 1 VOLTS DIV CH 1 COUPLING SEC DIV READOUT intensity 0 1 V DC 50 p s Fully cow off b Connect Time Mark Generator to CH 1 via 50 n ca ble and 50 O termination Display 10 jxs time marks c Position base trace below bottom graticule line d ADJUST GEOM R2784 for mi...

Page 129: ...c SEC DIV 10 ms CH 1 COUPLING DC A INTEN Fully CCW off d Connect calibration generator PG 506 STD AMPL output to CH 1 input via 50 H Precision coaxial cable Set generator for STD AMPL and 1 volt ADJUST Readout Jitter R724 for the least amount of jitter or sway in the readout Disconnect calibration generator 5 6 ...

Page 130: ...routine Press down arrow button three times to underline selec tion then press RUN button N O TE F o r th is a d ju s tm e n t th e 2 2 4 6 1Y o r 2246 M o d A m u s t be p la c e d in th e n o rm a l o p e r a tin g p o s itio n to a v o id in c o rre c t a lig n m e n t du e to e ffe c ts o f the e a rth s m a g n e tic fie ld b ADJUST VO GAIN R703 and RO VERT CENTERING R260 alternately until da...

Page 131: ...ition trace to center of graticule c ADJUST R161 CH 4 STEP BALANCE so that trace does not move vertically while switching CH 4 VOLTS DIV switch from 0 1 V to 0 5 V 9 CH 1 Input Compensation X I 00 CIO a Set CH 1 VOLTS DIV to 1 V b Set calibration generator amplitude for a 5 division display c ADJUST CIO CH 1 INPUT COMP X I00 for flattest response within 0 25 division 6 CH 1 M F LF Gain R13 and Com...

Page 132: ...CH 2 Gain R221 a Set calibration generator to STD AMPL and Ampli tude to 50 mV Remove 50 f l termination from the in put cable b Set c ADJUST CH 2 GAIN R221 for exactly a 5 division display amplitude 16 CH 3 M F LF Compensation C l34 a Set Vertical MODE CH 3 CH 3 VOLTS DIV 0 1V SEC DIV 50 j s b Move calibration generator signal to CH 3 input Add 50 f l termination c Set calibration generator for H...

Page 133: ... sharpest front corner with minimum overshoot Figure 5 1 shows areas of the waveform affected by each adjustment NOTE It may be necessary to adjust for a small amount of overshoot on the front corner of the pulse in order to meet the bandwidth check step 23 Total overshoot and aberra tions must be less than 0 25 division peak to peak Figure 5 1 Areas of waveform affected by HF compensation 21 CH 3...

Page 134: ...settings of 50 mV and 0 1 V f Move the test signal to the CH 2 input g Set Vertical MODE CH 2 CH 1 off CH 2 VOLTS DIV 10 mV h Repeat the complete bandwidth check pro cedure for Channel 2 24 CH 3 and CH 4 Bandwidth Check a Set Vertical MODE CH 3 CH 2 off CH 3 VOLTS DIV 0 1 V b Move the leveled sine wave generator signal to the CH 3 input c Set the generator output for a six division signal display ...

Page 135: ...ime mark generator to CH 1 input via 50 fi BNC coaxial cable and 50 D BNC termination Set generator for 0 1 ms time marks c Position peaks of the time markers to the center hori zontal graticule line d ADJUST HORIZONTAL IX GAIN R826 for one time mark per division over the center 8 divisions 2 Horizontal X I 0 Gain Timing R825 a Set X I0 MAG to ON b Set time mark generator for 10 jj s time marks c ...

Page 136: ...te the I OR DELAY control counterclockwise until the readout displays 70 000 p s d ADJUST B0 5 jxSTIMING C329 for one time mark per division over the center 8 divisions 6 2 5 ns Timing C807 C814 a Set Horizontal MODE A SEC DIV 20 ns X I0 MAG On CH 1 50 mV CH 1 COUPLING AC b Set time mark generator for 5 ns time marks c ADJUST 2NSTIMING C807 C814 fori cycleper each 2 5 divisions over the center 8 d...

Page 137: ... Cal R920 a Connect digital multimeter DMM LO lead to chassis ground and the high lead to R921 pin 6 b ADJUST VOLTS CAL R920 so the DMM reads 0 250 V 2 B Trigger Bandwidth R455 a Set Vertical MODE CH 2 CH 1 off CH 2 VOLTS DIV 20 mV SEC DIV 50 is b Preset potentiometer R455 to midrange c Run the SELF CAL routine Press CH1 CH2 VOLTMETER button and select SELF CAL d Connect leveled sine wave generato...

Page 138: ...e with part b or press QUIT to return to normal oscilloscope mode b Run MAKE FACTORY SETTINGS routine Press the down arrow button to select the INTERNAL SETTINGS MENU Press SELECT then press the down arrow button to select MAKE FACTORY SETTINGS Press RUN to start the routine When done press QUIT to return to normal oscilloscope mode 5 15 ...

Page 139: ......

Page 140: ...us classes of semiconductors Static voltages of 1 kV to 30 kV are common in unprotected environments When performing maintenance observe the fol lowing precautions to avoid component damage 1 Minimize handling of static sensitive components 2 Transport and store static sensitive components or assemblies in their original containers or on a metal rail Label any package that contains static sensitiv...

Page 141: ...nt failure especially under high humidity conditions ft V W W W V p CAUTION I v w w v w Do not use chemical cleaning agents which might damage the plastics used in this instru ment Use a nonresidue type cleaner preferably isopropyl alcohol or a solution of 1 mild detergent with 99 water Before using any other type of cleaner consult your Tektronix Service Center or representative Exterior INSPECTI...

Page 142: ...run plating Clean solder corrosion with an eraser and flush with isopropyl alcohol Resolder defective con nections Determine cause of burned items and repair Repair defective circuit runs Resistors Burned cracked broken or blistered Replace defective resistors Check for cause of burned component and repair as necessary Solder Connections Cold solder or rosin joints Resolder joint and clean with is...

Page 143: ...mponents and assemblies in an oven or drying compartment using low temperature 125 F to 150 F circulating air SWITCH CONTACTS Switch contacts are perma nently treated when assembled Neither cleaning nor other preventive maintenance is necessary unless the switch board is replaced or the switch assembly has remained disassembled for a long period of time LUBRICATION A regular periodic lubrication p...

Page 144: ... sche matic diagrams Refer to the first page of the Diagrams section for the reference designators and symbols used to identify components Important voltages and waveform reference numbers enclosed in hexagonal shaped boxes are also shown on each diagram Waveform illustrations are located adjacent to their respective schematic diagram Circuit Board Illustrations Circuit board illustrations showing...

Page 145: ...of the Tektronix Part Number using the resistor color code system The cathode and anode ends of a metal encased diode may be identified by the diode symbol marked on its body Semiconductor Lead Configurations Figure 9 2 in the Diagrams section shows the lead configurations for semiconductor devices used in the instrument These lead configurations and case styles are typical of those used at comple...

Page 146: ...t or the entire instru ment An apparent trouble may be the result of misadjustment The complete performance check is given in Section 4 of this manual and adjustment instructions are given in Section 5 7 Isolate Trouble to a Circuit To isolate problems use any symptoms noticed when checking the instrument s operation to help localize the trouble to a particular circuit For exam ple if the vertical...

Page 147: ...s or waveforms Typical voltages are listed on the schematic diagrams Waveforms indicated on the schematic diagrams by hexagonal outlined numbers are shown adjacent to the diagrams Waveform test points are shown in the circuit board illustrations NOTE Voltages and waveforms indicated on the schematic diagrams are not absolute and may vary slightly between instruments To establish operating conditio...

Page 148: ... ground If the former method is used both leads of the voltmeter must be isolated from ground If voltage values measured are less that those just given either the device is shorted or no current is flowing in the external circuit If values exceed the emitter to base values given either the junction is reverse biased or the device is defective Voltages exceeding those given for typical em itter to ...

Page 149: ...eter An open capacitor can be detected with a capaci tance meter or by checking whether the capacitor passes ac signals 12 Repair and Adjust the Circuit If any defective parts are located follow the replace ment procedures given under Corrective Mainte nance in this section After any electrical component has been replaced the performance of that circuit and any other closely related circuit should...

Page 150: ...SETTINGS MENU EXERCISER MENU QUIT 6555 23 Figure 6 2 Initial SERVICE MENU Each service menu has a title and a number of selectable items in the menu The title appears in the top line of the crt display and the selectable items appear under the title indented see Figure 6 2 Menu choices that are names of sub menus have a following slash and when one is underlined the word SELECT appears in the modi...

Page 151: ...TS READOUT MENU SHOW READOUT ROM HEADER EXERCISE RO INTERFACE EXERCISE TIME REF SHOW SYSTEM ROM HEADER SHOW AUTO RESTARTS MAIN BOARD MENU SHIFT REGISTER MENU EXERCISE SR 0 EXERCISE SR 1 EXERCISE SR 2 EXERCISE VOLT REF Table 6 5 SERVICE MENU Selections Menu Item Action DIAGNOSE Runs all diagnostics in sequence stopping at the first failed diagnostic See Table 6 6 for a diagnostic test failure troub...

Page 152: ...o compensate for an unusual operating temperature MAKE FACTORY SETTINGS Resets the front panel settings to those shipped with the instrument Used to produce a known setup condition The following is a partial list of settings Vertical MODE CH 1 AND CH 2 CH 1 CH 2 COUPLING DC CH 1 2 3 4 VOLTS DIV 1 V CH 2 INVERT OFF SCOPE BW OFF HORIZONTAL MODE A A SEC DIV 1 ms B SEC DIV 1 xs A B Trigger SLOPE r A B...

Page 153: ...system operating in a non multiplexed mode Pressing END exits the exerciser EXERCISE PORTS Continuously does analog to digital conversion on a single A to D port Select the port by pressing STEP The exerciser may be used to trace a single potentiometer wiper value or probe code value through the system by operating the A to D converter in a non multiplexed mode Pressing END exits the exerciser SHO...

Page 154: ...nd Vertical Preamplifier gain settings EXERCISE SR 1 Shifts alternate zeros and ones through Shift Register 1 U302 and U303 Diagram 5 U1103 Diagram 3 This shift register sets sweep speeds and auxiliary trigger settings TV Trigger Scope Bandwidth X I0 magnifi cation and X Y Mode EXERCISE SR 2 Shift alternate zeros and ones through Shift Register 2 U502 Diagram 4 EXERCISE VOLT REF Steps through all ...

Page 155: ...te on the bus lines The difference between WROTE and READ indicates which bit is stuck Devices to troubleshoot U2401 U2402 U2417C and D and bus lines between Measurement Proc essor and Readout Processor Check U2501 pin 29 for enabling signal to U2402 and U2400 pin 22 for clock RAM ERROR Writes and reads test bytes from the Readout RAM U2406 ADDRESS hex address of error location 3 characters WROTE ...

Page 156: ...ta read 6 characters Devices Tested U171 U172 and U173 on Diagram 1 NOTE U171 and U172 have 15 V clocks and data U173 has 5 V clocks and data Troubleshooting checks Check pin 3 of each device for correct clock Check pin 9 of each device for marching bit pattern Attenuator relay latches are driven and a clacking sound is heard REG SR 1 Sweeps and Auxiliary Trigger data path check WROTE hex data wri...

Page 157: ... data out Check pin 2 for clock DAC ERROR 0 The A to D system Diagram 11 is not working correctly Ground level was digitized out of the specified error limits Devices to troubleshoot U2515 and U2517 Diagram 8 U2306 U2302 U2300 U2313 and U2314 Diagram 11 U506 Diagram 7 Triggers The trigger diagnostic partially checks the Trigger SOURCE Trigger CPLG and Trigger SLOPE circuitry Error Messages TIME SI...

Page 158: ... 3 VERT COMP feedback U702 Diagram 2 4 ECL to CMOS translators Q604 Q605 Q606 Q607 Q602 and Q603 between U600 and U602 Diagram 4 5 Data to Measurement Processor data bus and bus transceivers Diagram 8 6 VOLTS CAL signal U931 Diagram 7 7 Vertical Preamps U210 U220 U230 and U240 Delay Line Drivers Q250 Q251 Q252 and Q253 and Vertical Position Switching circuitry U203 U801B U201 U202 U280 Q284 and Q2...

Page 159: ...f U260 if the inputs to de lay line driver are not at 7 5 V This operational amplifier is the bias stabilization circuit that com pares the average dc level to 7 5 and moves the emitters and therefore the bases of Q250 and Q251 to return the inputs to 7 5 V w a r n i n g Vertical output transistors Q701 and Q702 run extremely hot in excess of 100 C Use care when probing in those areas to not touch...

Page 160: ...vely and MB DATA pin 9 for activity while making front panel trigger mode changes 6 Check TH0 line pin 17 Signal should go to a l o g i c h i g h t h e n l o w a g a i n f o r e v e r y n e w front panel setup condition such as changing trigger mode vertical mode etc 7 Check TDI U600 pin 10 for a CMOS level switching signal 8 Check TDO U602 pin 30 for an ECL level switching signal 9 Check the A TR...

Page 161: ...ol lowers Q803 and Q807 for 24 V 10 Check the HDO and HD1 signals to U802 see Table 6 7 for display states 11 The horizontal preamplifier U802 runs warm to the touch but not hot 1 Turn off the Readout READOUT control fully CCW and test the node between CR2703 and C2711 for correct Z Axis waveform Vary INTEN to check operation Readout signals add con fusion to the waveforms 2 Check for correct auto...

Page 162: ...ficant byte of data to the D to A Converter U2517 pin 14 Diagram 8 0110 0000 0010 oxxx X001 DAC MSB CLK Latches the most significant byte of data to the D to A Converter U2517 pin 14 Diagram 8 0110 0000 0010 oxxx X010 POT MUX CLK Latches channel selection code for pot multiplexer U2517 pin 13 Diagram 8 100X x x x x x x x x x x x x xooo MB CNTL W R Write enables Pro cessor Interface circuitry Diagr...

Page 163: ...s SR DATA signal line high U606C pin 6 Diagram 4 100X 0111 x x x x x x x x xooo Places SR 2 in shift mode U502 pin 10 Diagram 4 U2512 pin 5 Diagram 8 100X 1XXX x x x x x x x x xooo A places SR 2 in load mode U502 pin 10 Diagram 4 U2512 pin 5 Diagram 8 100X 1111 x x x x x x x x X011 TRIG CLK Loads coupling data to triggers U600 pin 19 Diagram 4 1010 x x x x x x x x x x x x x x x x Chip enable for M...

Page 164: ...WER SUPPLY WARNING I For safety reasons an isolation transformer must be connected whenever troubleshooting is done in the Preregulator and Inverter Power Supply sections of the instrument 1 If the fuse blows check that Q2201 is not shorted If a variac is available slowly increase the line voltage from 0 V until the voltage across C2202 is about 40 V If the same voltage is across C2203 Q2201 is pr...

Page 165: ...f the match between cursor position the value dis played on the cursor A TL is the A trigger level measurement system B TL is the B trigger level measurement system Table 6 9 Measurement Error Troubleshooting Hints Circuit Problem Symptoms VERTICAL INPUTS schematic Diagram 1 Ground relay stuck in signal position Gross value problems for Types 1 4 volts measurements Gross value problems A TL and B ...

Page 166: ...roblems for Type 1 measurements for affected channel Test With only the affected channel selected for display check that channel is shown and check gain accuracy VERT COMP output U702 7 Gross value problems with Type 1 measurements Gross cursor problems with Types 2 3 and 4 measurements Gross cursor problems with A TL and B TL Test Lift W1101 and ground the base of Q703 VERT COMP should be togglin...

Page 167: ...el 1 signal B Trig Source Multiplexer U431A Minor to gross value problems depending on which bit is stuck with types 2 3 and 4 measurements Minor to gross value problems with B TL SEARCH RETURNED BAD VALUE AT on time measurements unless stuck in LINE SOURCE Test Set B Trigger Source to VERT For each channel display only that channel and check that the signal applied to the displayed channel appear...

Page 168: ...t of U1106A pin 1 for changing signal DC Average circuit U1101B Gross value problems for Type 2 measurements minor value problems with low frequencies if RC values in the filter are incorrect Test Display only CH 1 run DC measurement Apply to 50 Hz sine wave signal with a DC offset to the CH 1 input Check that only the dc value appears at output of the DC Average circuit DISPLAY AND TRIGGER LOGIC ...

Page 169: ...pe 4 measurements TDO Level Shifter U603 Q603 Q602 Same as Processor to Display Sequencer Interface problem Test Using NORM mode for both triggers VERT source for both triggers and CH 1 only displayed apply a four division square wave signal to the CH 1 input In the A Horizontal mode check that the Trig d LED light goes off and the sweep stops running with the Trigger LEVEL control at full CW rota...

Page 170: ...Multiplexer schematic Diagram 4 BTS 0 2 U600 pins 27 29 B Trig Source Multiplexer See notes on B Trig Source Multiplexer schematic Diagram 3 B SLOPE line stuck high U600 26 Gross problems with PEAK value Types 2 3 and 4 measurements Gross value problems with the B TL measurement TRIG CLK line U600 19 See notes on A Trig Cplg Multiplexer and B Trig Cplg Multiplexer U421 and U431 Diagram 3 A AND B S...

Page 171: ...k that TB CAL signal is correct and signal path is intact to U421A pin 4 Diagram 3 through U1106A SLIC WR U2518 12 See notes on Processor to Display Sequencer Interface schematic Diagram 4 SLIC RD U2503C 8 See notes on Processor to Display Sequencer Interface schematic Diagram 4 FLIC WR U2518 11 See notes and tests on TDO Level Shifter schematic Diagram 4 MB DATA U2515 11 See notes on Processor to...

Page 172: ...ms div B at 0 1 ms div Check that first delay zone can be positioned over length of sweep with the k control DELTA DELAY U2305B 7 RETURNED BAD SEARCH VALUE AT for SELF CAL on on time measurements Test Use the preceding REF DELAY settings and set first delay zone to start of sweep with k control Check that second delay zone can be positioned over length of sweep with H control REF CURSOR U2304D 14 ...

Page 173: ...ro m g ro u n d 6 Use an isolation transformer to supply power to the 2246 1Y or 2246 Mod A if you troubleshoot in power supply with power applied to the instrument OBTAINING REPLACEMENT PARTS Electrical and mechanical replacement parts can be obtained through your local Tektronix Field Office or representative However many of the standard electronic components may usually be obtained from a local...

Page 174: ...three inches of padding material or urethane foam tightly packed between the carton and the instrument 5 Seal the shipping carton with an industrial stapler or strapping tape 6 If the instrument was NOT purchased under Air Force Contract No F41608 88 D 008 address the shipping carton to the nearest Tektronix Service Center Please include your own return address on the shipping carton NOTE Special ...

Page 175: ...02 00 1 2 003 0822 00 Hex Wrenches 0 050 inch 1 16 inch Assembly and disassembly Allen wrenches Long nose Pliers Component removal and replacement Diamalloy Model LN55 3 Diagonal Cutters Component removal and replacement Diamalloy Model M554 3 Vacuum Solder Extractor No Static Charge Retention Unsoldering static sensitive devices and components on multi layer boards Pace Model PC 10 Contact Cleane...

Page 176: ...nent See Figure 9 2 in the Diagrams section for the semiconductor lead configurations I CAUTION t v w w w v r S A fte r re p la c in g a p o w e r tra n s is to r c h e ck th a t th e c o lle c to r is n o t s h o rte d to th e c h a s s is b e fo re a p p ly in g p o w e r to th e in s tru m e n t To remove socketed dual in line packaged DIP integrated circuits pull slowly and evenly on both ends...

Page 177: ...r is removed Allow a moment for the circuit board to cool before proceeding to the next pin CAUTION A a a v w w Excessive heat can cause the etched circuit conductors to separate from the circuit board Never allow the solder extractor tip to remain at one place on the board for more than three seconds Solder wick spring actuated or squeeze bulb solder suckers and heat blocks for desoldering multip...

Page 178: ...trument chassis 7 Install the rear panel Secure it with four 15 Torx head screws 8 Install a Torx head screw in the right side of the cabinet Crt Removal and Replacem ent WARNING U se c a re w h e n h a n d lin g a c rt B re a k in g th e crt c a n c a u s e h ig h v e lo c ity s c a tte rin g o f g la s s fra g m e n ts P ro te c tiv e c lo th in g a n d s a fe ty g la s s e s o r s a fe ty fa c ...

Page 179: ...to the crt neck pins The horizontal de flection leads going to bottom pins should be crossed 13 Connect the high voltage anode lead 14 Install the crt implosion shield and frame using two 7 8 in Torx head screws 15 Check that the graticule illumination light bulbs are in place in the light pipe at the bottom of the crt 16 Reinstall rear crt shield BNC Connectors Vertical Inputs To replace BNC Conn...

Page 180: ...w v The P O W E R s w itc h m u s t be in the O F F p o s itio n to s a fe ly re m o v e th e s h a ft fro m the s h a ft o f th e s w itc h in th e fo llo w in g ste p P u llin g th e s h a ft o ff w ith th e P O W E R s w itc h on m a y d a m a g e th e s w itc h s h a ft a n d s p rin g a s s e m b ly 7 Remove the power switch extension shaft Snap the extension shaft off the transitional pivot ...

Page 181: ... clip from the housing it is pressed in Move the high voltage connector to the top of the power supply housing to make room for removing the Potentiometer Switch board 6 Move the Potentiometer Switch board assembly back away from the front panel and lift it out of the instrument To separate the A12 Potentiometer board from the Switch board 7 Pull out on the three snap fasteners that hold the Poten...

Page 182: ... 6 5 10 Unclip the delay line from both sides of the board and from the two clips at the lower side of the rear panel Remove the two clips from the rear panel 11 Remove the ten screws that hold the Main board to the chassis Back out the three screws going through the rear panel enough to allow removal of Main board See Figure 6 4 12 Pull the three ribbon cables through to the bot tom of the instru...

Page 183: ... the clip in the power supply housing 21 Install the shield on the power supply housing eight screws 22 Install the inside attenuator shield secure with one screw Then install the outside attenuator shield secure with five screws 23 Install the Potentiometer Switch board assembly see Potentiometer Switch board assembly installation procedure 6 44 Figure 6 4 Main board removal ...

Page 184: ...tall the Processor board 25 Dress the two ribbon cables to the top of the instrument Connect them to the Processor and Potentiometer boards 26 Install the crt socket Turn the socket sideways and push it through the crt socket holder in the rear panel 27 Install the crt see crt installation procedure 6 45 ...

Page 185: ......

Page 186: ...2 Preparation for Use The following list describes the power cords available for the 2246 1Y and 2246 Mod A Standard U S 120 V 60 Hz 74 in Option A1 Universal Euro 220 V 50 Hz 2 5 m Option A2 UK 240 V 50 Hz 2 5 m Option A3 Australian 240 V 50 Hz 2 5 m Option A4 North American 240 V 60 Hz 2 5 m Option A5 Switzerland 220 V 50 Hz 2 5 m OPTION 1R RACKMOUNTED INSTRUMENT When the 2246 1Y or 2246 Mod A P...

Page 187: ......

Page 188: ...mber component number A23 R1234 Circuit number Read Resistor 1234 of Assembly 23 Example b A23A2R1234 component number A23 A2 R1234 Subassembly number V Circuit num ber Read Resistor 1234 of Subassembly 2 of Assembly 23 Only the circuit number will appear on the diagrams and circuit board illustrations Each diagram and circuit board illustration is clearly marked with the assembly number Assembly ...

Page 189: ...50 5600 PB EINDHOVEN THE NETHERLANDS TK1743 UNITRODE UK LTD 6 CRESSWELL PARK BLACKHEATH LONDON SE 3 9RD ENGLAND TK1913 WIMA THE INTER TECHNICAL GROUP IND ONE BRIDGE ST PO BOX 23 IRVINGTON NY 10533 TK1935 ACCRA FAB INC 11007 NE 37TH CIRCLE VANCOUVER WA 98682 TK2058 TDK CORPORATION OF AMERICA 2254 N FIRST ST SAN JOSE CA 95131 TK2073 TOCOS AMERICA INC 565 W GULF ROAD ARLINGTON HEIGHTS IL 60005 TK2172...

Page 190: ...C CO 24355 ANALOG DEVICES INC 24546 CORNING GLASS WORKS 24931 SPECIALTY CONNECTOR CO INC 27014 NATIONAL SEMICONDUCTOR CORP 27264 MOLEX INC 31433 KEMET ELECTRONICS CORP NATIONAL SALES HEADQUARTERS 31918 ITT SCHADOW INC 32997 BOURNS INC TRIMPOT DIV 34335 ADVANCED MICRO DEVICES 34371 HARRIS CORP HARRIS SEMICONDUCTOR PRODUCTS GROUP 50088 SGS THOMSON MICROELECTRONICS INC 70 PEMBROKE ROAD 267 LOWELL ROA...

Page 191: ... IL 60195 4526 56845 DALE ELECTRONICS INC 2300 RIVERSIDE BLVD PO BOX 74 NORFOLK NE 68701 2242 57668 ROHM CORP 8 WHATNEY PO BOX 19515 IRVINE CA 92713 59640 SUPERTEXINC 1225 BORDER BY DESCOX 19515 SUNNYVALE CA 94086 61058 MATSUSHITA ELECTRIC CORP OF AMERICA PANASONIC INDUSTRIAL CO DIV ONE PANASONIC WAY PO BOX 1502 SECAUCUS NJ 07094 2917 61529 AROMAT CORP 250 SHEFFIELD ST MOUNTAINSIDE NJ 07092 2303 6...

Page 192: ...9399 01 B120000 CIRCUIT BD ASSYA10 MAIN 2246 MOD A 2Y CIRCUIT BD ASSY POTENTIOMETER CIRCUIT BD ASSYSWITCH 80009 80009 80009 671087503 670940201 670939901 A16 672 1306 00 B700100 B711092 CIRCUIT BD ASSYPROCESSOR 2246 1Y WITH U2519 FIRMWARE 80009 672130600 A16 672 1306 01 B711093 CIRCUIT BD ASSYPROCESSOR 671 1086 XX WIRED 2246 1Y WITH U2519 FIRMWARE 80009 672130601 A16 672 0254 00 B100100 B113797 CI...

Page 193: ...344 00 RES VAR NONWW CKT BD 4 7K OHM 20 1 25WLINE AR 71590 BA17140001 A8R902 311 2344 00 RES VAR NONWW CKT BD 4 7K OHM 20 1 25WLINE AR 71590 BA17140001 A8R903 311 2344 00 RES VAR NONWW CKT BD 4 7K OHM 20 1 25WLINE AR 71590 BA17140001 A8R905 311 2344 00 RES VAR NONWW CKT BD 4 7K OHM 20 1 25WLINE AR 71590 BA17140001 A8W900 131 4038 00 CONN HDR PCB MALE RTANG 1 X 8 0 1 CTR 0 2 95 MLG X 0 140 TAIL TIN...

Page 194: ...BIPOLAR PNP 20V 50MA 600MHZ AMPLIFIER 2246 MOD A 2Y 04713 MPSH81 A9Q182 151 0712 00 B700100 B710099 TRANSISTOR SIG BIPOLAR PNP 20V SOMA 600MHZ AMPLIFIER 2246 1Y 04713 MPSH81 A9R185 313 1512 00 B100100 B110099 RES FXD FILM 5 1K OHM 5 0 2W 2246 MOD A 2Y 91637 CCF50 2 51QQOJ A9R185 313 1512 00 B700100 B710099 RES FXD FILM 5 1K OHM 5 0 2W 2246 1Y 91637 CCF50 2 51000J A9R188 313 1512 00 B100100 B110099...

Page 195: ...212 195 0970 00 B100100 B110099 LEAD ELECTRICAL 26 AWG 3 0 L O N 2246 MOD A 2Y 80009 195097000 A9W212 195 0970 00 B700100 B710099 LEAD ELECTRICAL 26 AWG 3 0 L 0 N 2246 1Y 80009 195097000 A9W222 195 0970 00 B100100 B110099 LEAD ELECTRICAL 26 AWG 3 0 L 0 N 2246 MOD A 2Y 80009 195097000 A9W222 195 0970 00 B700100 B710099 LEAD ELECTRICAL 26 AWG 3 0 L 0 N 2246 1Y 80009 195097000 This scan is not author...

Page 196: ...500 A10AT117 307 2135 01 B700494 B711016 ATTENUATOR 1M OHM ATTENUATOR NETWORK 2246 1Y 80009 307213501 A10AT117 307 2135 02 B711017 B711094 ATTENUATOR 1M OHM ATTENUATOR NETWORK 2246 1Y 80009 307213502 A10AT117 307 2135 03 B711095 ATTENUATORrIM OHM ATTENUATOR NETWORK 2246 1Y 80009 307213503 A10AT127 307 2135 00 B100100 B101582 RES NTWK FXD FI ATTENUATOR DIP PKG 2246 MOD A 2Y 80009 307213500 A10AT127...

Page 197: ... 10 100V TUBULAR Ml 04222 SA106A150KAA A10C138 281 0315 00 CARVAR CER DI 2 8 10PF 52769 GKU 10000 A10C139 281 0797 00 CARFXD CER DI 15PF 10 100V TUBULAR MI 04222 SA106A150KAA A10C140 290 0974 01 CAP FXD ELCTtT 10UF 20 50V 1W344 KMC50VB10RM5X11 A10C151 281 0909 00 CARFXD CER DI 0 022UF 20 50V 04222 SA105C223MAA A10C152 281 0938 00 CARFXD CER DI 20PF 2 500V 04222 MA107A200GAA A10C153 281 0799 00 CAR...

Page 198: ...50VB1ORM5X11 A10C216 281 0909 00 B100100 B113468 CARFXD CER DI 0 022UF 20 50V 2246 MOD A 2Y 04222 SA105C223MAA A10C216 281 0775 01 B113469 CARFXD CER DI 0 1UF 20 50V 2246 MOD A 2Y 04222 SA105E104MAA A10C216 281 0909 00 B700100 B711092 CARFXD CER DI 0 022UF 20 50V 2246 1Y 04222 SA105C223MAA A10C216 281 0775 01 B711093 CARFXD CER DI 0 1UF 20 50V 2246 1Y 04222 SA105E104MAA A10C217 281 0909 00 B100100...

Page 199: ...00 A10C274 281 0305 00 B700100 B700723 CARVAR CER DI 1 5 4 0PF 2246 1Y 52769 GKU 4R000 A10C275 281 0872 00 B100100 B101874 CARFXD CER DI 91PF 5 100V 2246 MOD A 2Y 04222 MC101A910J A10C275 281 0776 00 B101875 CARFXD CER DI 120PF 5 100V 2246 MOD A 2Y 04222 SA102A121JAA A10C275 281 0872 00 B700100 B700723 CARFXD CER DI 91PF 5 100V 2246 1Y 04222 MC101A910J A10C275 281 0776 00 B700724 CARFXD CER DI 120...

Page 200: ...339 281 0909 00 CARFXD CER DI 0 022UF 20 50V 04222 SA105C223MAA A10C351 281 0909 00 CARFXD CER DI 0 022UF 20 50V 04222 SA105C223MAA A10C421 281 0775 01 CARFXD CER DI 0 1UF 20 50V 04222 SA105E104MAA A10C422 281 0861 00 CARFXD CER D 270PF 5 50V 04222 SA101A271JAA A10C423 281 0864 00 CARFXD CER DI 430PF 5 100V 04222 SA101A431JAA A10C424 290 0183 00 CARFXD ELCTLT 1UF 10 35V 31433 T322B105K035AS A10C42...

Page 201: ...46 1Y 04222 SA102A330JAA A10C477 281 0765 00 B100100 B110099 CARFXD CER DI 100PF 5 100V 2246 MOD A 2Y 04222 SA102A101JAA A10C477 281 0872 00 B110100 CARFXD CER DI 91PF 5 100V 2246 MOD A 2Y 04222 MC101A910J A10C477 281 0765 00 B700100 B710099 CARFXD CER DI 100PF 5 100V 2246 1Y 04222 SA102A101JAA A10C477 281 0872 00 B710100 CARFXD CER DI 91PF 5 100V 2246 1Y 04222 MC101A910J A10C478 281 0864 00 B1101...

Page 202: ... 04222 SA102A330JAA A10C492 281 0819 00 CARFXD CER Dl 33 PF 5 50V 04222 SA102A330JAA A10C493 281 0819 00 CARFXD CER Dl 33 PF 5 50V 04222 SA102A330JAA A10C494 281 0819 00 CARFXD CER Dl 33 PF 5 50V 04222 SA102A330JAA A10C496 281 0864 00 B110254 B119999 CARFXD CER DI 430PF 5 100V 2246 MOD A 2Y 04222 SA101A431JAA A10C496 283 0196 00 B120000 CARFXD CER DI 270PF 10 50V 2246 MOD A 2Y 16299 SR155C271KAA A...

Page 203: ...100100 B119999 CARFXD CER D 0 1UF 80 20 200V 2246 MOD A 2Y 04222 SR302E105ZAA A10C705 285 1460 00 B120000 CAP FXD MTLZD 0 1 UF 20 250V 5MM LEAD SPACING 2246 MOD A 2Y TK1913 MKS 2 0 1 250 2 A10C705 283 0057 00 B700100 B714999 CARFXD CER DI 0 1UF 80 20 200V 2246 1Y 04222 SR302E105ZAA A10C705 285 1460 00 B715000 CARFXD MTLZD 0 1UF 20 250V 5MM LEAD SPACING 2246 1Y TK1913 MKS 2 0 1 250 2 A10C706 281 08...

Page 204: ... 1Y 04222 SR302E105ZAA A10C804 285 1460 00 B715000 CARFXD MTLZD 0 1UF 20 250V 5MM LEAD SPACING 2246 1Y TK1913 MKS 2 0 1 250 2 A10C805 281 0909 00 CARFXD CER DI 0 022UF 20 50V 04222 SA105C223MAA A10C806 281 0909 00 CARFXD CER DI 0 022UF 20 50V 04222 SA105C223MAA A10C807 281 0064 00 B100100 B110099 CARVAR PLASTIC 0 25 1 5PF 600V 2246 MOD A 2Y 52769 ER 530 013 A10C807 281 0214 00 B110100 CARVAR CER D...

Page 205: ...A10C819 281 0765 00 CARFXD CER DI 100PF 5 100V 04222 SA102A101JAA A10C820 281 0909 00 B110100 CARFXD CER DI 0 022UF 20 50V 2246 MOD A 2Y 04222 SA105C223MAA A10C820 281 0909 00 B710100 CARFXD CER DI 0 022UF 20 50V 2246 1Y 04222 SA105C223MAA A10C821 281 0909 00 B110100 CARFXD CER DI 0 022UF 20 50V 2246 MOD A 2Y 04222 SA105C223MAA A10C821 281 0909 00 B710100 CARFXD CER DI 0 022UF 20 50V 2246 1Y 04222...

Page 206: ...6 281 0909 00 CARFXD CER DI 0 022UF 20 50V 04222 SA105C223MAA A10C1101 281 0909 00 B700100 B710290 CARFXD CER DI 0 022UF 20 50V 2246 1Y 04222 SA105C223MAA A10C1101 290 0183 00 B710291 CARFXD ELCTLT 1UF 10 35V 2246 1Y 31433 T322B105K035AS A10C1101 281 0909 00 B100100 B110637 CARFXD CER DI 0 022UF 20 50V 2246 MOD A 2Y 04222 SA105C223MAA A10C1101 290 0183 00 B110638 CARFXD ELCTLT 1UF 10 35V 2246 MOD ...

Page 207: ...1 0909 00 B710100 CARFXD CER DI 0 022UF 20 50V 2246 1Y 04222 SA105C223MAA A10C1250 283 0853 00 B120000 CARFXD CER DI 2 2PF 200V 2246 MOD A 2V 04222 SR212A2R2DAATR A1001250 283 0853 00 B715000 CARFXD CER DI 2 2PF 200V 2246 1Y 04222 SR212A2R2DAATR A10C1251 283 0853 00 B120000 CARFXD CER DI 2 2PF 200V 2246 MOD A 2Y 04222 SR212A2R2DAATR A10C1251 283 0853 00 B715000 CARFXD CER DI 2 2PF 200V 2246 1Y 042...

Page 208: ...A10C2711 285 1184 01 CARFXD MTLZD 0 01UF 20 4KV 84411 TEK183 01 20 4 A10C2712 285 1040 00 CARFXD PLASTIC 1200PF 10 4000V 84411 TEK 134 122940 A10C2713 281 0771 00 CARFXD CER DI 2200PF 20 200V 04222 SA106E222MAA A10C2715 281 0909 00 CARFXD CER DI 0 022UF 20 50V 04222 SA105C223MAA A10C2716 281 0771 00 CARFXD CER DI 2200PF 20 200V 04222 SA106E222MAA A10C2717 283 0057 00 B100100 B119999 CARFXD CER DI ...

Page 209: ...1107 00 B120000 DIODE SIG SCHTKY 40V 350MA 12PF 2246 MOD A 2Y 50088 BAT48 A10CR201 152 0141 02 B700100 B714999 DIODE SIG ULTRA FAST 40V 150MA 4NS 2PF 2246 1Y 27014 FDH9427 A10CR201 152 1107 00 B715000 DIODE SIG SCHTKY 40V 350MA 12PF 2246 1Y 50088 BAT48 A10CR202 152 0141 02 B100100 B119999 DIODE SIG ULTRA FAST 40V 150MA 4NS 2PF 2246 MOD A 2Y 27014 FDH9427 A10CR202 152 1107 00 B120000 DIODE SIG SCHT...

Page 210: ...4 FDH9427 A10CR1005 152 0141 02 DIODE SIG ULTRA FAST 40V 150MA 4NS 2PF 27014 FDH9427 A10CR2701 152 0400 00 DIODE RECT FAST RCVRY 400V 1A 200NS 14552 MB2501 A10CR2702 152 0400 00 DIODE RECT FAST RCVRY 400V 1A 200NS 14552 MB2501 A10CR2703 152 0400 00 DIODE RECT FAST RCVRY 400V 1A 200NS 14552 MB2501 A10CR2704 152 0400 00 DIODE RECT FAST RCVRY 400V 1A 200NS 14552 MB2501 A10CR2705 152 0141 02 DIODE SIG...

Page 211: ... 148 0174 00 RELAY ARMATURE 1 FORM C 12VDC TK1689 DS1EMDC12V H166 A10K102 148 0173 01 RELAY ARMATURE 1 FORM C INSERT LOSS 0 3 DB 900MHZ VSWR 1 5 900MHZ C01L 12VDC 720 OHM CONTACT 30VDC 0 5A 10W PKG 795 X 441 TK1689 RK1EDC12V A10K103 148 0173 01 RELAY ARMATURE 1 FORM C INSERT LOSS 0 3 DB 900MHZ VSWR 1 5 900MHZ COIL 12VDC 720 OHM CONTACT 30VDC 0 5A 10W PKG 795 X 441 TK1689 RK1EDC12V A10K104 148 0174...

Page 212: ... INDUCTOR 0JR03 120 1688 00 A10Q131 151 1042 00 TRANSISTOR SIG JFET N CH 6V 15MA 4 5MS IDSS 1 2 0 5MA LOCATIONS A AND B 04713 SPF627M2 A10Q151 151 1042 00 TRANSISTOR SIG JFET N CH 6V 15MA 4 5MS IDSS 1 2 0 5MA LOCATIONS A AND B 04713 SPF627M2 A10Q171 151 0164 00 TRANSISTOR SIG BIPOLAR PNP 60V 600MA200MHZ AMPLIFIER 04713 MPS2907A A10Q181 151 0712 00 B110100 TRANSISTOR SIG BIPOLAR PNP 20V 50MA 600MHZ...

Page 213: ...250MHZ AMPLIFIER 04713 2N3906 A10Q313 151 0736 00 TRANSISTOR NPN SI TO 92 0JR04 2N4401 A10Q315 151 0188 00 TRANSISTOR SIG BIPOLAR PNP 40V 200MA 250MHZ AMPLIFIER 04713 2N3906 A10Q316 151 0188 00 TRANSISTOR SIG BIPOLAR PNP 40V 200MA 250MHZ AMPLIFIER 04713 2N3906 A10Q317 151 0830 00 TRANSISTOR NPN SI AMPLIFIER 625 TO 92 MPS918 80009 151083000 A10Q318 151 0830 00 TRANSISTOR NPN SI AMPLIFIER 625 TO 92 ...

Page 214: ... A10Q607 151 0188 00 TRANSISTOR SIG BIPOLAR PNP 40V 200MA 250MHZ AMPLIFIER 04713 2N3906 A10Q608 151 0190 00 TRANSISTOR SIG BIPOLAR NPN 40V 200MA 300MHZ AMPLIFIER 04713 2N3904 A10Q701 151 0846 00 TRANSISTOR S G BIPOLAR NPN 30V 400MA 800MHZ AMPLIFIER COMMON BASE PKG 04713 SRF5286 A10Q702 151 0846 00 TRANSISTOR SIG BIPOLAR NPN 30V 400MA 800MHZ AMPLIFIER COMMON BASE PKG 04713 SRF5286 A10Q703 151 0190 ...

Page 215: ...R 2246 1Y 04713 2N3904 A10Q805 151 1211 00 B100100 B110099 TRANSISTOR PWR MOS N CH 160V 0 25A 40 OHM 2246 MOD A 2Y 59640 VN1316N2 A10Q805 151 0270 00 B110100 TRANSISTOR PNP SI TO 39 2246 MOD A 2Y 04713 ST919 A10Q805 151 1211 00 B700100 B710099 TRANSISTOR PWR MOS N CH 160V 0 25A 40 OHM 2246 1Y 59640 VN1316N2 A10Q805 151 0270 00 B710100 TRANSISTOR PNRSI TO 39 2246 IV 04713 ST919 A10Q806 151 1212 00 ...

Page 216: ... 0216 04 TRANSISTOR SIG BIPOLAR PNP 25V 100MA 170MHZ AMPLIFIER 04713 MPS6523RLRP A10Q1102 151 0192 05 TRANSlSTOR NPN SI TO 92 04713 SPS8801RLRP A10Q1103 151 0216 04 TRANSISTOR SIG BIPOLAR PNP 25V 100MA 170MHZ AMPLIFIER 04713 MPS6523RLRP A10Q1104 151 0192 05 TRANSISTOR NPN SI TO 92 04713 SPS8801RLRP A10Q1105 151 0216 04 TRANSISTOR SIG BIPOLAR PNP 25V 100MA 170MHZ AMPLIFIER 04713 MPS6523RLRP A10Q110...

Page 217: ...C TO 91637 CCF501G75R00F A10R131 315 0390 00 B100100 B119999 RES FXD FILM 39 OHM 5 0 25W 2246 MOD A 2Y TK1727 SFR25 2322 181 A10R131 315 0620 00 B120000 RES FXD FILM 62 OHM 5 0 25W 2246 MOD A 2Y TK1727 SFR25 2322 181 A10R131 315 0390 00 B700100 B714999 RES FXD FILM 39 OHM 5 0 25W 2246 1Y TK1727 SFR25 2322 181 A10R131 315 0620 00 B715000 RES FXD FILM 62 OHM 5 0 25W 2246 1Y TK1727 SFR25 2322 181 A10...

Page 218: ... OHM 5 0 2W 91637 CCF50 2 10001J A10R180 313 1101 00 RES FXD FILM 100 OHM 5 0 2W 91637 CCF50 2 100R0J A10R181 313 1101 00 RES FXD FILM 100 OHM 5 0 2W 91637 CCF50 2 100R0J A10R182 308 0058 00 RES FXD WW 1 5 OHM 10 1W 75042 SP 20 1R500K A10R185 313 1512 00 B110100 RES FXD FILM 5 1K OHM 5 0 2W 2246 MOD A 2Y 91637 CCF50 2 51OOOJ A10R185 313 1512 00 B710100 RES FXD FILM 5 1K OHM 5 0 2W 2246 1Y 91637 CC...

Page 219: ... A10R220 313 1331 00 RES FXD FILM 330 OHM 5 0 2W 91637 CCF50 2 330ROJ A10R221 311 2329 00 B100100 B110099 RES VAR NONWW TRIMMER 5K OHM 10 2246 MOD A 2Y 32997 3386R EA5 502 A10R221 311 2454 00 B110100 B119999 RES VAR NONWW TRMR 5K OHM 20 0 5W LOG 2246 MOD A 2Y 32997 3362U EP6 502R A10R221 311 2232 00 B120000 RES VAR NONWW TRMR 2KOHM 20 0 5W LINEAR 2246 MOD A 2Y TK2073 GF06UT2 202 M L A10R221 311 23...

Page 220: ...1 311 2232 00 B120000 RES VAR NONWW TRMR 2KOHM 20 0 5W LINEAR 2246 MOD A 2Y TK2073 GF06UT2 202 M L A10R241 311 2329 00 B700100 B710099 RES VAR NONWW TRIMMER 5K OHM 10 2246 1Y 32997 3386R EA5 502 A10R241 311 2454 00 B710100 B714999 RES VAR NONWW TRMR 5K OHM 20 0 5W LOG 2246 1Y 32997 3362U EP6 502R A10R241 311 2232 00 B715000 RES VAR NONWWTRMR 2K OHM 20 0 5W LINEAR 2246 1Y TK2073 GF06UT2 202 M L A10...

Page 221: ... A10R273 311 2230 00 RES VAR NONWW TRMR 500 OHM 20 0 50 LINEAR TK2073 GF06UT2 501 M L A10R274 313 1100 00 RES FXD FILM 10 OHM 5 0 2W 91637 CCF50 2 10R00J A10R275 311 2227 00 RES VAR NONWW TRMR 100 OHM 20 0 5W LINEAR TK2073 GF06UT2 101 M L A10R276 322 3213 00 RES FXD FILM 1 62K OHM 1 0 2W TC T0 91637 CCF501G16200F A10R277 322 3213 00 RES FXD FILM 1 62K OHM 1 0 2W TC T0 91637 CCF501G16200F A10R278 3...

Page 222: ...0OJ A10R317 313 1101 00 RES FXD FILM 100 OHM 5 0 2W 91637 CCF50 2 100R0J A10R318 313 1681 00 RES FXD FILM 680 OHM 5 0 2W 91637 CCF50 2 680ROJ A10R319 313 1562 00 RES FXD FILM 5 6K OHM 5 0 2W 91637 CCF50 2 56000J A10R320 313 1470 00 RES FXD FILM 47 OHM 5 0 2W 91637 CCF50 2 47R00J A10R321 307 2133 00 RES NTWK FXD FI RESISTOR NETWORK 80009 307213300 A10R322 313 1512 00 RES FXD FILM 5 1K OHM 5 0 2W 91...

Page 223: ...3 1162 00 RES FXD FILM 1 6K OHM 5 0 2W 91637 CCF50 2 16000J A10R361 313 1200 00 RES FXD FILM 20 OHM 5 0 2W 91637 CCF50 2 20R00J A10R362 313 1392 00 RES FXD FILM 3 9K OHM 5 0 2W 91637 CCF50 2 39000J A10R363 313 1332 00 RES FXD FILM 3 3K OHM 5 0 2W 91637 CCF50 2 33000J A10R364 313 1511 00 RES FXD FILM 510 OHM 5 0 2W 91637 CCF50 2 51OROJ A10R365 313 1132 00 RES FXD FILM 1 3K OHM 5 0 2W 91637 CCF50 2 ...

Page 224: ...M 5 0 2W 2246 1Y 91637 CCF50 2 1 O OROJ A10R403 313 1511 00 B110100 RES FXD FILM 510 OHM 5 0 2W 2246 MOD A 2Y 91637 CCF50 2 51OROJ A10R403 313 1511 00 B710100 RES FXD FILM 510 OHM 5 0 2W 2246 1Y 91637 CCF50 2 51OROJ A10R410 313 1511 00 B100100 B110099 RES FXD FILM 510 OHM 5 0 2W 2246 MOD A 2Y 91637 CCF50 2 51 OROJ A10R410 313 1331 00 B110100 RES FXD FILM 330 OHM 5 0 2W 2246 MOD A 2Y 91637 CCF50 2 ...

Page 225: ...100R0J A10R416 313 1151 00 B110100 RES FXD FILM 150 OHM 5 0 2W 2246 MOD A 2Y 91637 CCF50 2 150ROJ A10R416 313 1101 00 B700100 B710099 RES FXD FILM 100 OHM 5 0 2W 2246 1Y 91637 CCF50 2 100R0J A10R416 313 1151 00 B710100 RES FXD FILM 150 OHM 5 0 2W 2246 1Y 91637 CCF50 2 150R0J A10R417 313 1511 00 B100100 B110099 RES FXD FILM 510 OHM 5 0 2W 2246 MOD A 2Y 91637 CCF50 2 51 OROJ A10R417 313 1331 00 B110...

Page 226: ...5 311 2230 00 RES VAR NONWW TRMR 500 OHM 20 0 50 LINEAR TK2073 GF06UT2 501 M L A10R456 313 1103 00 RES FXD FILM 10K OHM 5 0 2W 91637 CCF50 2 10001J A10R460 313 1271 00 B100100 B113237 RES FXD FILM 270 OHM 5 0 2W 2246 MOD A 2Y 91637 CCF50 2 270R0J A10R460 313 1681 00 B113238 RES FXD FILM 680 OHM 5 0 2W 2246 MOD A 2Y 91637 CCF50 2 680ROJ A10R460 313 1271 00 B700100 B711093 RES FXD FILM 270 OHM 5 0 2...

Page 227: ...3 313 1151 00 RES FXD FILM 150 OHM 5 0 2W 91637 CCF50 2 150R0J A10R484 313 1202 00 RES FXD FILM 2K OHM 5 0 2W 91637 CCF50 2 20000J A10R485 313 1392 00 RES FXD FILM 3 9K OHM 5 0 2W 91637 CCF50 2 39000J A10R486 313 1512 00 RES FXD FILM 5 1K OHM 5 0 2W 91637 CCF50 2 51000J A10R487 313 1331 00 RES FXD FILM 330 OHM 5 0 2W 91637 CCF50 2 330ROJ A10R490 313 1511 00 RES FXD FILM 510 OHM 5 0 2W 91637 CCF50 ...

Page 228: ...471 00 RES FXD FILM 470 OHM 5 0 2W 91637 CCF50 2 470R0J A10R618 313 1821 00 RES FXD FILM 820 OHM 5 0 2W 91637 CCF50 2 820R0J A10R619 313 1821 00 RES FXD FILM 820 OHM 5 0 2W 91637 CCF50 2 820ROJ A10R620 313 1821 00 RES FXD FILM 820 OHM 5 0 2W 91637 CCF50 2 820R0J A10R621 313 1302 00 RES FXD FILM 3K OHM 5 0 2W 91637 CCF50 2 30000J A10R622 313 1302 00 RES FXD FILM 3K OHM 5 0 2W 91637 CCF50 2 30000J A...

Page 229: ...2W 91637 CCF50 2 39001J A10R665 313 1393 00 RES FXD FILM 39K OHM 5 0 2W 91637 CCF50 2 39001J A10R666 313 1393 00 RES FXD FILM 39K OHM 5 0 2W 91637 CCF50 2 39001J A10R669 313 1511 00 RES FXD FILM 510 OHM 5 0 2W 91637 CCF50 2 51OROJ A10R670 313 1511 00 RES FXD FILM 510 OHM 5 0 2W 91637 CCF50 2 51OROJ A10R671 313 1200 00 RES FXD FILM 20 OHM 5 0 2W 91637 CCF50 2 20R00J A10R672 313 1333 00 RES FXD FILM...

Page 230: ... 3085 00 RES FXD FILM 75 OHM 1 0 2W TC T0 91637 CCF501G75R00F A10R708 307 2130 00 RES NTWK FXD FI DUAL LOAD RESISTOR 80009 307213000 A10R709 313 1027 00 RES FXD FILM 2 7 OHM 5 0 2W 57668 TR20JE 02E7 A10R710 313 1134 00 RES FXD FILM 130K OHM 5 0 2W 91637 CCF50 2 13002J A10R711 313 1100 00 RES FXD FILM 10 OHM 5 0 2W 91637 CCF50 2 10R00J A10R712 313 1100 00 RES FXD FILM 10 OHM 5 0 2W 91637 CCF50 2 10...

Page 231: ...2Y 91637 CCF50 2 56000J A10R803 313 1272 00 B110100 RES FXD FILM 2 7K OHM 5 0 2W 2246 MOD A 2Y 91637 CCF50 2 27000J A10R803 313 1562 00 B700100 B710099 RES FXD FILM 5 6K OHM 5 0 2W 2246 1Y 91637 CCF50 2 56000J A10R803 313 1272 00 B710100 RES FXD FILM 2 7K OHM 5 0 2W 2246 1Y 91637 CCF50 2 27000J A10R804 313 1104 00 B100100 B110099 RES FXD FILM 100K OHM 5 0 2W 2246 MOD A 2Y 91637 CCF50 2 10002J A10R...

Page 232: ...OHM 5 0 2W 2246 1Y 91637 CCF50 2 430ROJ A10R813 313 1272 00 B710100 RES FXD FILM 2 7K OHM 5 0 2W 2246 1Y 91637 CCF50 2 27000J A10R814 313 1562 00 B100100 B110099 RES FXD FILM 5 6K OHM 5 0 2W 2246 MOD A 2Y 91637 CCF50 2 56000J A10R814 313 1272 00 B110100 RES FXD FILM 2 7K OHM 5 0 2W 2246 MOD A 2Y 91637 CCF50 2 27000J A10R814 313 1562 00 B700100 B710099 RES FXD FILM 5 6K OHM 5 0 2W 2246 1Y 91637 CCF...

Page 233: ...B110099 RES FXD FILM 20K OHM 5 0 5W 2246 MOD A 2Y TK1727 SFR30 2322 182 A10R828 313 1133 00 B110100 RES FXD FILM 13K 5 0 2W 2246 MOD A 2Y 91637 CCF50 2 13001J A10R828 301 0203 00 B700100 B710099 RES FXD FILM 20K OHM 5 0 5W 2246 1Y TK1727 SFR30 2322 182 A10R828 313 1133 00 B710100 RES FXD FILM 13K 5 0 2W 2246 1Y 91637 CCF50 2 13001J A10R829 301 0203 00 B100100 B110099 RES FXD FILM 20K OHM 5 0 5W 22...

Page 234: ...0R00J A10R846 322 3058 00 B100100 B110099 RES FXD FILM 39 2 OHM 1 0 2W TC T0MI 2246 MOD A 2Y 91637 CCF50 1G39R20F A10R846 322 3058 00 B700100 B710099 RES FXD FILM 39 2 OHM 1 0 2W TC T0MI 2246 1Y 91637 CCF50 1G39R20F A10R847 313 1100 00 B100100 B110099 RES FXD FILM 10 OHM 5 0 2W 2246 MOD A 2Y 91637 CCF50 2 10ROOJ A10R847 313 1100 00 B700100 B710099 RES FXD FILM 10 OHM 5 0 2W 2246 1Y 91637 CCF50 2 1...

Page 235: ...A 2Y 91637 CCF50 2 27000J A10R861 313 1272 00 B710100 RES FXD FILM 2 7K OHM 5 0 2W 2246 1Y 91637 CCF50 2 27000J A10R862 322 3077 00 B110100 RES FXD FILM 61 9 OHM 1 0 2W TC T0MI 2246 MOD A 2Y 91637 CCF501G61R90F A10R862 322 3077 00 B710100 RES FXD FILM 61 9 OHM 1 0 2W TC T0MI 2246 1Y 91637 CCF501G61R90F A10R863 313 1271 00 B110100 RES FXD FILM 270 OHM 5 0 2W 91637 CCF50 2 270R0J 2246 MOD A 2Y A10R8...

Page 236: ...1 00 RES FXD FILM 100 OHM 5 0 2W 91637 CCF50 2 1OOROJ A10R910 313 1101 00 RES FXD FILM 100 OHM 5 0 2W 91637 CCF50 2 100R0J A10R911 311 1239 00 RES VAR NONWW TRMR 2 5K OHM 0 5W 32997 3386X 1 252 A10R915 322 3289 00 RES FXD FILM 10KOHM 1 0 2W TC T0 91637 CCF50G10001F A10R916 322 3289 00 RES FXD FILM 10KOHM 1 0 2W TC T0 91637 CCF50G10001F A10R920 311 2228 00 RES VAR NONWW TRMR 200 OHM 20 0 5W LINEAR ...

Page 237: ... 313 1512 00 RES FXD FILM 5 1 K OHM 5 0 2W 91637 CCF50 2 51000J A10R1024 313 1272 00 RES FXD FILM 2 7K OHM 5 0 2W 91637 CCF50 2 27000J A10R1025 313 1512 00 RES FXD FILM 5 1K OHM 5 0 2W 91637 CCF50 2 51000J A10R1026 313 1100 00 RES FXD FILM 10 OHM 5 0 2W 91637 CCF50 2 10R00J A10R1027 313 1100 00 RES FXD FILM 10 OHM 5 0 2W 91637 CCF50 2 10R00J A10R1028 313 1102 00 RES FXD FILM 1K OHM 5 0 2W 91637 CC...

Page 238: ...3 1223 00 RES FXD FILM 22K OHM 5 0 2W 91637 CCF50 2 22001J A10R1133 313 1104 00 RES FXD FILM 100K OHM 5 0 2W 91637 CCF50 2 10002J A10R1134 313 1472 00 RES FXD FILM 4 7K OHM 5 0 2W 91637 CCF50 2 47000J A10R1135 313 1204 00 RES FXD FILM 200K 5 0 2W 91637 CCF50 2 20002J A10R1136 313 1204 00 RES FXD FILM 200K 5 0 2W 91637 CCF50 2 20002J A10R1142 313 1223 00 RES FXD FILM 22K OHM 5 0 2W 91637 CCF50 2 22...

Page 239: ...91637 CCF50 2 1OOROJ A10R1241 313 1101 00 B120000 RES FXD FILM 100 OHM 5 0 2W 2246 MOD A 2Y 91637 CCF50 2 1OOROJ A10R1241 313 1101 00 B715000 RES FXD FILM 100 OHM 5 0 2W 2246 1Y 91637 CCF50 2 1 OOROJ A10R1250 322 3059 00 B120000 RES FXD FILM 40 2OHM 1 0 2W TC TOM1 2246 MOD A 2Y 91637 CCF50 2G40R20FT A10R1250 322 3059 00 B715000 RES FXD FILM 40 2 OHM 1 0 2W TC T0MI 2246 1Y 91637 CCF50 2G40R20FT A10...

Page 240: ...5W LINEAR TK2073 GF06UT2 203 M L A10R2720 315 0203 00 RES FXD FILM 20K OHM 5 0 25W TK1727 SFR25 2322 181 A10R2721 315 0472 00 RES FXD FILM 4 7K OHM 5 0 25W TK1727 SFR25 2322 181 A10R2722 315 0244 00 RES FXD FILM 240K OHM 5 0 25W TK1727 SFR25 2322 181 A10R2723 315 0511 00 RES FXD FILM 510 OHM 5 0 25W TK1727 SFR25 2322 181 A10R2724 315 0625 00 RES FXD FILM 6 2M OHM 5 0 25W TK1727 SFR25 2322 181 A10R...

Page 241: ...13 1100 00 RES FXD FILM 10 OHM 5 0 2W 91637 CCF50 2 10R00J A10RT201 307 0181 00 RES THERMAL 100K OHM 10 NTC 14193 K10 10002K A10U112 165 2232 00 B100100 B101582 MICROCKT LINEAR BUFFER AMPLIFIER 2246 MOD A 2Y 80009 165223200 A10U112 165 2232 01 B101583 MICROCKT LINEAR BUFFER AMPLIFIER W 3 GAIN SETTINGS 2246 MOD A 2Y 80009 165223201 A10U112 165 2232 00 B700100 B700493 MICROCKT LINEAR BUFFER AMPLIFIE...

Page 242: ...EAR BIPOLAR OP AMP 04713 MCI741CPI A10U280 156 1349 00 IC LINEAR BIPOLAR AMPLIFIER DUAL INDEPENDENT DIFFERENTIAL AMPLIFIER 34371 CA3054 98 A10U301 156 2571 00 1C MISCiHCMOS ANALOG MUX TRIPLE SPDT 04713 MC74HC4053N J A10U302 156 0796 00 1C DIGITAUCMOS SHIFT REGISTER 8 STAGE SHIFT STORE 3 STATE 04713 MC14094BCP A10U303 156 0796 00 1C DIGITALiCMOS SHIFT REGISTER 8 STAGE SHIFT STORE 3 STATE 04713 MC14...

Page 243: ...U431 234 0239 31 B112869 QUICK CHIPlTRIGGER CIRCUIT 28PLCC W AU LEAD 2246 MOD A 2Y 80009 234023931 A101 441 156 2027 00 IC DIGITAL HCMOS GATE HEX INV 27014 MM74HC04N A10U442 156 1640 00 B110100 IC DIGITAL ECL RECE VER TRIPLE LINE 2246 MOD A 2Y 04713 MC10H116 L OR P A101 442 156 1640 00 B710100 IC DIGITAL ECL RECEIVER TRIPLE LINE 2246 1Y 04713 MCI0H116 L OR P A10U501 156 0469 00 1C DIGITAL LSTTL DE...

Page 244: ...ES 04713 MC1403U A10U1001 156 0495 00 lC LINEAR BIPOLAR OP AMP QUAD SINGLE SUPPLY 01295 LM324N A10U1101 156 2873 00 MICROCKT LINEARiDUAL BIFET OPERATIONAL AMPLIFIER 04713 MC34082AP D C A10U1102 156 1225 00 1C LINEARiBIPOLAR COMPARATORiDUAL OPEN COLLECTOR 300NS 01295 LM393P A10U1103 156 0796 00 1C DIGITALlCMOS SHIFT REGISTER 8 STAGE SHIFT STORE 3 STATE 04713 MC14094BCP A10U1104 156 0515 00 1C MISCi...

Page 245: ...1 0566 00 B100100 B119999 BUS CONDUCTOR DUMMY RES 0 094 OD X 0 225L 2246 MOD A 2Y 24546 OMA07 A10W202 131 0566 00 B700100 B714999 BUS CONDUCTOR DUMMY RES 0 094 OD X 0 225L 2246 1Y 24546 OMA07 A10W203 131 0566 00 BUS CONDUCTOR DUMMY RES 0 094 OD X 0 225L 24546 OMA07 A10W204 131 0566 00 B120000 BUS CONDUCTOR DUMMY RES 0 094 OD X 0 225L 2246 MOD A 2Y 24546 OMA07 A10W204 131 0566 00 B715000 BUS CONDUC...

Page 246: ... 2246 MOD A 2Y 24546 OMA 07 A10W410 131 0566 00 B700100 B710099 BUS CONDUCTOR DUMMY RES 0 094 OD X 0 225L 2246 1Y 24546 OMA 07 A10W411 131 0566 00 B100100 B110099 BUS CONDUCTOR DUMMY RES 0 094 OD X 0 225L 2246 MOD A 2Y 24546 OMA 07 A10W411 131 0566 00 B700100 B710099 BUS CONDUCTOR DUMMY RES 0 094 OD X 0 225L 2246 1Y 24546 OMA 07 A10W412 131 0566 00 B100100 B110099 BUS CONDUCTOR DUMMY RES 0 094 OD ...

Page 247: ...DUMMY RES 0 094 OD X 0 225L 2246 MOD A 2Y 24546 OMA07 A10W612 131 0566 00 B700100 B714999 BUS CONDUCTOR DUMMY RES 0 094 OD X 0 225L 2246 1Y 24546 OMA07 A10W802 131 0566 00 BUS CONDUCTOR DUMMY RES 0 094 OD X 0 225L 24546 OMA07 A10W805 131 0566 00 BUS CONDUCTORlDUMMY RES 0 094 OD X 0 225L 24546 OMA07 A10W806 131 0566 00 BUS CONDUCTORlDUMMY RES 0 094 OD X 0 225L 24546 OMA07 A10W807 131 0566 00 BUS CO...

Page 248: ...1203 131 0566 00 B110100 BUS CONDUCTOR DUMMY RES 0 094 OD X 0 225L 2246 MOD A 2Y 24546 OMA 07 A10W1203 131 0566 00 B710100 BUS CONDUCTOR DUMMY RES 0 094 OD X 0 225L 2246 1Y 24546 OMA 07 A10W12Q4 131 0566 00 BUS CONDUCTOR DUMMY RES 0 094 OD X 0 225L 24546 OMA 07 A10W1205 131 0566 00 BUS CONDUCTOR DUMMY RES 0 094 OD X 0 225L 24546 OMA 07 A10W1209 131 0566 00 BUS CONDUCTOR DUMMY RES 0 094 OD X 0 225L...

Page 249: ...46 MOD A 2Y A10X421 136 1065 00 B112869 SKT PL IN ELEK MICROCKT 28 PIN LOW PROFILE 2246 MOD A 2Y 00779 641746 2 A10X421 136 1005 00 B700100 B710999 SKT PL IN ELEK PLCC PCB 28 POS 0 05 CTR 0 360 H X 0 125 TAIL TIN 0 55 0 75 1CSHOULDER TUBE 18 EA 2246 1Y 00779 3 821581 1 A10X421 136 1065 00 B711000 SKT PL IN ELEK MICROCKT 28 PIN LOW PROFILE 2246 1Y 00779 641746 2 A10X431 136 1005 00 B100100 B112868 ...

Page 250: ...R NONWW CKT BD 5K OHM 20 0 5W LINEAR 32997 91Z1AZ45EA0117 A12R2105 311 2345 00 RES VAR NONWW CKT BD 5K OHM 20 0 5W LINEAR 32997 91Z1AZ45EA0117 A12R2106 311 2345 00 RES VAR NONWW CKT BD 5K OHM 20 0 5W LINEAR 32997 91Z1AZ45EA0117 A12R2107 311 2343 00 RES VAR NONWW CKT BD 5K OHM 20 0 5W LINEAR 32997 91Z1AZ45EA0119 A12R2108 311 2345 00 RES VAR NONWW CKT BD 5K OHM 20 0 5W LINEAR 32997 91Z1AZ45EA0117 A1...

Page 251: ...7 A14DS2013 150 1160 00 LT EMITTING DIO GREEN 50434 QLMP 1587 A14DS2014 150 1160 00 LT EMITTING DIO GREEN 50434 QLMP 1587 A14DS2015 150 1160 00 LT EMITTING DIO GREEN 50434 QLMP 1587 A14DS2020 150 1160 00 LT EMITTING DIO GREEN 50434 QLMP 1587 A14DS2021 150 1160 00 LT EMITTING DIO GREEN 50434 QLMP 1587 A14DS2022 150 1161 00 LT EMITTING DIO YELLOW 50434 QLMP 1487 A14DS2023 150 1161 00 LT EMITTING DIO...

Page 252: ...00 LT EMITTING DIO GREEN 50434 QLMP 1587 A14DS2048 150 1160 00 LT EMITTING DIO GREEN 50434 QLMP 1587 A14R2001 307 0675 00 RES NTWK FXD FI 9 1K OHM 2 1 25W 91637 CSC10A01 102G A14R2002 307 0675 00 RES NTWK FXD FI 9 1K OHM 2 1 25W 91637 CSC10A01 102G A14U2001 156 0789 00 1C DIGITAL LSTTL SHIFT REGISTER 8 BIT PISO 01295 SN74LS165N A14U2002 156 0789 00 IC DIGITAL LSTTL SHIFT REGISTER 8 BIT PISO 01295 ...

Page 253: ...131072 X 8 EPROM PEGM 21010 DIP32 6 2246 MOD A 2Y TK0161 93369300 A16U2519 160 5063 08 B700100 B700632 MICROCKT DGTL NMOS 131072 X 8 EPROM PRGM 27010 DIP32 6 2246 1Y TK2172 160 5063 08 A16U2519 160 5063 09 B700633 B710184 MICROCKT DGTL NMOS 131072 X 8 EPROM PRGM 2246 1Y TK0161 160 5063 09 A16U2519 160 5063 10 B710185 B711085 MICROCKT DGTLNMOS 131072 X 8 EPROM PRGM 21010 DIP32 6 2246 1Y TK0161 160 ...

Page 254: ... 0 1UF 20 50V 04222 SA105E104MAA A16A1C2316 281 0909 00 CARFXD CER DI 0 022UF 20 50V 04222 SA105C223MAA A16A1C2317 281 0909 00 CARFXD CER DI 0 022UF 20 50V 04222 SA105C223MAA A16A1C2318 281 0809 00 CARFXD CER Dl 200 PF 5 100V 04222 SA101A201JAA A16A1C2319 281 0909 00 CARFXD CER DI 0 022UF 20 50V 04222 SA105C223MAA A16A1C2320 281 0798 00 B700100 B710099 CARFXD CER D 51PF 1 100V 2246 1Y TK1743 CGB51...

Page 255: ...PF 10 100V 2246 1Y 04222 SA102A470KAA A16A1C2416 281 0798 00 B100100 B110099 CARFXD CER DI 51PF 1 100V 2246 MOD A 2Y TK1743 CGB510GEN A16A1C2416 281 0763 00 B110100 CARFXD CER DI 47PF 10 100V 2246 MOD A 2Y 04222 SA102A470KAA A16A1C2417 281 0798 00 B700100 B710099 CARFXD CER DI 51PF 1 100V 2246 1Y TK1743 CGB510GEN A16A1C2417 281 0763 00 B710100 CARFXD CER DI 47PF 10 100V 2246 1Y 04222 SA102A470KAA ...

Page 256: ...0 50V 04222 SA105E104MAA A16A1C2518 285 1301 01 CARFXD MTLZD 0 47UF 10 50V TK1913 MKS 2 47 50 OR A16A1C2521 281 0772 00 CARFXD CER DI 4700PF 10 100V 04222 SA101C472KAA A16A1C2522 281 0772 00 CARFXD CER DI 4700PF 10 100V 04222 SA101C472KAA A16A1C2523 281 0772 00 CARFXD CER DI 4700PF 10 100V 04222 SA101C472KAA A16A1C2524 281 0772 00 CARFXD CER DI 4700PF 10 100V 04222 SA101C472KAA A16A1C2525 281 0772...

Page 257: ...A470KAA A16A1C2555 281 0798 00 B700100 B710099 CARFXD CER DI 51PF 1 100V 2246 1Y TK1743 CGB510GEN A16A1C2555 281 0763 00 B710100 CARFXD CER DI 47PF 10 100V 2246 1Y 04222 SA102A470KAA A16A1C2555 281 0798 00 B100100 B110099 CARFXD CER DI 51PF 1 100V 2246 MOD A 2Y TK1743 CGB510GEN A16A1C2555 281 0763 00 B110100 CARFXD CER DI 47PF 10 100V 2246 MOD A 2Y 04222 SA102A470KAA A16A1CR2501 152 0141 02 DIODE ...

Page 258: ...RES FXD FILM 4 12KOHM 1 0 2W TC T0 91637 CCF501G41200F A16A1R2314 322 3231 00 RES FXD FILM 2 49K OHM 1 0 2W TC T0MI 91637 CCF50 1G24900F A16A1R2315 322 3238 00 RES FXD FILM 2 94KOHM 1 0 2W TC T0 91637 CCF501G29400F A16A1R2316 322 3231 00 RES FXD FILM 2 49KOHM 1 0 2W TC TOM1 91637 CCF50 1G24900F A16A1R2317 322 3231 00 RES FXD FILM 2 49K OHM 1 0 2W TC T0MI 91637 CCF50 1G24900F A16A1R2318 322 3238 00...

Page 259: ..._J _ i o a Li Q l l Q l l Q LL Q LL Q L Q LL Q LL d LL Q LL Q LL Q LL D LL q LL Q LL D o x X X X X X X X X X X X X X X 9 E Li C O LL C 0 LL o LL 0 LL CO U CO LL CO LL co LL CO LL co LL CO LL CO LL CO LL co LL co 0 111 LU LU UJ UJ UJ UJ UJ LU LU UJ UJ LU UJ LU z IT X X X X X X X X X X X X X X o o 0 O 0 W IU 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 x CM 1 CM 1 CM 1 CM 1 CM CM CM CM CM CM CM CM CM CM CM h fs N ...

Page 260: ...T 1 y T y T E T r CO 0 2 2 2 2 2 2 2 2 2 2 2 s 2 2 2 2 2 2 2 2 2 2 2 2 2 _ l j _j _i _i j _i x 1 _J _j J J X j _ _j j i _l _i _i _j J L L LL LL L L L L X X X X X X X X X X X X X X X X X X X X Q Q Q a Q Q Q Q Q Q D Q D Q Q Q Q Q Q Q D Q Q D a X X X X X X X X X X X it X X X X X X X X X X X X X L L LL LL L L X X X X X X X X X X X X X X X LL X X X X CO CO CO c o C O c o c o CO CO CO c o c o CO c o c o...

Page 261: ...00K 0 A16A1R2521 307 0499 00 RES FXD FILM 9 100K OHM 5 0 125WTC 200 PPM DEG C 11236 750 101 RIOOKO A16A1R2522 307 0499 00 RES FXD FILM 9 100K OHM 5 0 125WTC 200 PPM DEG C 11236 750 101 RIOOKO A16A1R2523 313 1102 00 RES FXD FILM 1K OHM 5 0 2W 91637 CCF50 2 10000J A16A1R2524 313 1102 00 RES FXD FILM 1K OHM 5 0 2W 91637 CCF50 2 10000J A16A1R2525 313 1621 00 RES FXD FILM 620 OHM 5 0 2W 91637 CCF50 2 6...

Page 262: ...L D TYPE 3 STATE 18324 74HCT374N A16A1U2302 156 1589 00 IC CONVERTER BIPOLAR D A 12 BIT CURRENT OUT MULTIPLYING 24355 DAC312 040P ST A16A1U2303 156 0513 00 1C MISC CMOS ANALOG MUX 8 CHANNEL 04713 MC14051B CP OR A16A1U2304 156 1200 00 IC LINEAR BIFET OP AMP QUAD 01295 TL074CN A16A1U2305 156 1200 00 IC LINEAR BIFET OP AMP QUAD 01295 TL074CN A16A1U2306 156 1126 00 IC LINEAR BIPOLAR COMPARATOR OPEN CO...

Page 263: ...NAND 01295 SN74LSOON A16A1U2501 156 2003 01 MICROCKT DGTL MOS 8 BIT MICROPRO 8 MHZ80188 LCC68 34335 R80188 A16A1U2502 156 2396 00 IC MISC BIPOLAR PWR SUPPLY SUPERVlSOR MPU RESET GENERATOR 5V SUPPLY SENSING 01295 TL7705 ACP A16A1U2503 156 0479 00 IC DIG1TAL LSTTL GATES QUAD 2 INPUT OR 01295 SN74LS32N A16A1U2506 156 0382 00 1C DIGITAL LSTTL GATES QUAD 2 INPUT NAND 01295 SN74LS00N A16A1U2512 156 1065...

Page 264: ...32 P6S 0 1 X 0 6 M 0 008 0 014 THK 1C LEAD 00779 2 644018 3 A16A1Y2501 119 2936 00 B100100 B113058 RESONATORS6MHZ CER 2246 MOD A 2Y 51406 CSA 16 00MX11 A16A1Y2501 119 2936 01 B113059 RESONATOR 16MHZ CER 2246 MOD A 2Y TK2058 82501009 A16A1Y2501 119 2936 00 B700100 B711085 RESONATOR 16MHZ CER 2246 1Y 51406 CSA 16 00MX11 A16A1Y2501 119 2936 01 B711086 RESONATOR 16MHZ CER 2246 1Y TK2058 82501009 8 76 ...

Page 265: ... TK0515 PME271Y415 A18C2218 281 0813 00 CARFXD CER DI 0 047UF 20 50V 04222 SA105E473MAA A18C2219 281 0773 00 CARFXD CER DI 0 01UF 10 100V TUBULAR MI 04222 SA201C103KAA A18C2221 290 1129 00 CARFXD ELCTLT 1000UF 100 10 12V 24165 672D108H012DS2A A18C2222 290 1129 00 CARFXD ELCTLT 1000UF 100 10 12V 24165 672D108H012DS2A A18C2223 290 1129 00 CARFXD ELCTLT1000UF 100 10 12V 24165 672D108H012DS2A A18C2224...

Page 266: ...7 A18CR2220 152 0581 00 DIODE RECT SCHTKY 20V 1A 450VF 25A IFSM 04713 1N5817 A18CR2227 152 0400 00 DIODE RECT FAST RCVRY 400V 1A 200NS 14552 MB2501 A18CR2228 152 0400 00 DIODE RECT FAST RCVRY 400V 1A 200NS 14552 MB2501 A18CR2231 152 0040 00 DIODE RECT 600V 1A 50A IFSM 14936 GP15J 069 A18CR2232 152 0040 00 DIODE RECT 600V 1A 50A IFSM 14936 GP15J 069 A18CR2233 152 0040 00 DIODE RECT 600V 1A 50A IFSM...

Page 267: ...BIPOLAR PNP 50V 50MA 40MHZ AMPLIFIER 0JR04 S1423 TPE2 AMM A18Q2214 151 1197 00 TRANSISTOR PWR MOS N CH 60V 12A 0 25 OHM 04713 IRF533 W LEADFO A18R2201 308 0678 00 RES FXD WW 0 1 OHM 5 2W 91637 CPF 2 R10J T R A18R2203 301 0184 00 RES FXD FILM 180K OHM 5 0 5W 57668 TR50J E180K A18R2204 301 0184 00 RES FXD FILM 180K OHM 5 0 5W 57668 TR50J E180K A18R2205 313 1104 00 RES FXD FILM 100K OHM 5 0 2W 91637 ...

Page 268: ...RES FXD FILM 200K 5 0 2W 91637 CCF50 2 20002J A18R2241 313 1103 00 RES FXD FILM 10K OHM 5 0 2W 91637 CCF50 2 10001J A18R2242 313 1027 00 RES FXD FILM 2 7 OHM 5 0 2W 57668 TR20JE 02E7 A18R2243 313 1027 00 RES FXD FILM 2 7 OHM 5 0 2W 57668 TR20JE 02E7 A18R2245 313 1103 00 RES FXD FILM 10K OHM 5 0 2W 91637 CCF50 2 10001J A18R2246 313 1513 00 RES FXD CMPSN 51K OHM 5 0 2W 91637 CCF50 2 51001J A18R2247 ...

Page 269: ...498 ORDER BY DESC A18T2204 120 1685 01 XFMR PWR STU HIGH VOLTAGE 75498 ORDER BY DESC A18T2205 120 1347 00 TRANSFORMER RRDRIVER SATURATING 54583 BDT 001 A18T2206 120 1401 00 XFMR TRIGGER LINE 1 1 TURNS RATIO 54937 DMI 500 2044 A18U2201 156 2395 00 MICROCKT LlNEAR BIPOLAR PWM POWER SUPPLY CONTROLLER 04713 MC34060AP A18U2230 152 0926 00 SEMICOND DVC DI HIGH VOLTAGE MULTIPLIER INPUT VOLTAGE 5 7KVAC PE...

Page 270: ...MOD A 2Y 61529 A1F891003 B25 119 3564 00 B111719 FAN TUBEAXIAL 12VDC 2 6W 3200RPM 36CFM 2246 MOD A 2Y TKOIH MD1208PTS1 DL21 119 2118 01 DELAY LINE ELEC 2246 W STRAIN RELIEF 80009 119211801 F2201 159 0023 00 FUSE CARTRIDGE 3AG 2A 250V SLOW BLOW 71400 MDX2 FL2201 119 2055 00 FILTER RFI 3A 115 230V 48 440HZ S4307 FN322 3 05 J16 131 0955 00 CONN RF JACK BNC 50 OHM FEMALE STR SLDR CUP FRONT PNL GOLD 0 ...

Page 271: ...g component locator illustration The Replaceable Electrical Parts list is arranged by assemblies in numerical sequence the components are listed by component number see following illustration for constructing a component number The schematic diagram and circuit board component location illustration have grids A lookup table with the grid coordinates is provided for ease of locating the component O...

Page 272: ...OLOR SIGNIFICANT FIGURES RESISTORS MULTIPLIER TOLERANCE BLACK 0 1 BROWN 1 10 i RED 2 102 or 100 2 ORANGE 3 103 or 1 K 3 YELLOW 4 104 or 10 K 4 GREEN 5 105 or 100 K V4 BLUE 6 106 or 1 M Vi VIOLET 7 1 10 GRAY 8 WHITE 9 GOLD 10 1 or 0 1 5 SILVER 10 2 or 0 01 10 NONE 20 1861 20A 6081 95 Figure 9 1 Color codes for resistors ...

Page 273: ...OLOR SIG NIFICANT FIGURES RESISTORS M ULTIPLIER TOLERANCE BLACK 0 1 BROWN 1 10 i RED 2 102 or 100 2 ORANGE 3 103 or 1 K 3 YELLOW 4 104 or 10 K 4 GREEN 5 10s or 100 K 2 BLUE 6 106 or 1 M 54 VIO LET 7 1 10 GRAY 8 WHITE 9 GOLD 1 0 1 or 0 1 5 SILVER 10 2 or 0 01 10 NONE 20 1861 20A 6081 95 Figure 9 1 Color codes for resistors ...

Page 274: ...RS TRANSISTORS TRANSISTOR SCR FET CATHODE IS FLAT SIDE WITH SHORT LEAD L FLAT PACK 1 LED INTEGRATED CIRCUITS LEAD CONFIGURATIONS AND CASE STYLES ARE TYPICAL BUT MAY VARY DUE TO VENDOR CHANGES OR INSTRUMENT MODIFICATIONS 6081 20 Figure 9 2 Semiconductor lead configurations ...

Page 275: ... BOARD number N U M BE R C IR C U IT N U M BE R N U M BE R C IR C U IT N L M B E R SCHEM NU M BER C fl cn 003 006 on 014 015 1002 1003 I CR1014 CR1016 J9301 L1001 L1002 LI003 G 1011 01012 mooi R1006 R 1011 013 iii 17 e iii 001 lb02 22 22 22 22 22 22 22 22 22 22 22 22 SCHEMATIC LOOKUP TABLE COMPONENT LOCATION TABLE ILLUSTRATION FOR INSTRUMENT BOARD LOCATION NUMERAL AND LETTER AT SIGNAL LINES TO OR ...

Page 276: ...Circuit Number of the component you are looking for in the schematic c In the SCHEM LOCATION column next to the component read the grid coordinates of the component in the schematic d Using the grid coordinates given find the component in the schematic diagram SCHEMATIC LOOKUP TABLE e 2 Locate the Component on the Circuit Board a In the manual locate the tabbed page that corresponds to Assembly Nu...

Page 277: ...IGNALS A TRIG B TRIG B TRIG DLY SEL SRI CLOCK TTL TRIG CLOCK INTEN GATES ZERO HYST FR0M 1 TB CAL F R 0 M 8 CLK IK 4 SR1 CLOCK A GATES B GATES 4 PLY END 0 DLY END 1 A SWP END B SWP END SR DATA A GATIT RO REQ RO BLANK V f r V READOUT SYSTEM 4 r V HOLDOFF RO VERT iri REF DELTA DLYS RO HORIZ REF DELTA CURSORS ADC DAC SYSTEM o HORIZ POS TRACE SEP c j CH1 CH2 VAR 2 CHl 4 POS 2246 1Y and 2246 Mod A Servi...

Page 278: ...Figure 9 5b Detailed 2246 1Y or 2246 Mod A block diagram part 2 R E ...

Page 279: ... INTR INTERRUPT REQUEST LATCH U2717C D RO BUF WR RO BUF RO READOUT PROCESSOR U2400 T T Y DO D7 3 COMMUNICATION LATCHES U 2401 U2402 CHARACTER DOT PO SITIO N ROM U 2408 EOCH R0 R 7 R 0 R 6 IL CHARACTER POSITIO N ADDRESS COUNTER U 2404 U2405 R 0 R7 SYS RESET 2 r F IE LD G MIXER CONTROL LATCH CH0 CH7 LA 2 READOUT READOUT PO SITIO N OACS MIXER U2412 U2414 U2413 U2415 U2416A B C 0 CHARACTER CODES RAM U...

Page 280: ...A TRIG LVL 11 U2305 1 3 U1106 5 B GATE 4 U603 9 5 VR304 B GATE 4 U603 15 5 VR303 B INTEN 11 U2312 4 R2356 7 U1001 5 B INTEN GATE 4 U602 18 7 Q1004 B RAMP 5 Q325 Q329 6 U802 5 B REF TRIG LVL 11 U2304 7 3 U1106 3 B SLOPE 4 U600 26 3 U431 8 R497 B SWP END 5 U316 2 R380 4 U602 37 B TRIG 3 U431 10 R415 4 U602 34 DL22 B TRIG 3 U431 11 R416 4 DL22 BEAM FIND 4 U503 7 7 Q2706 R2705 2 U701 21 6 U802 14 BTS ...

Page 281: ...4 U602 36 4 U602 35 5 U301 11 3 U1106 9 8 U2518 11 4 U600 24 4 U600 23 11 1 2308 5 R2343 6 Q805 R819 Q806 R819 6 Q801 R802 Q802 R802 4 U602 19 4 U602 40 R647 6 U802 8 6 U802 11 4 Q600 R636 7 V1 R 7 V1 L 7 Q1003 8 U2501 27 8 U2501 25 12 T2206 3 U1103 6 7 U506 3 R503 8 U2518 15 R2564 8 U2515 11 R2555 4 U502 12 11 U2313 5 11 U2313 19 11 U2313 2 10 U2523 11 R2528 10 U2524 11 R2529 3 U1106 2 6 U802 6 1...

Page 282: ... CLK 8 U2517 14 11 U2300 11 DATA BUS 8 U2514 9 U2401 U2402 10 U2523 U2524 11 U2300 U2301 U2307 U2313 DELTA CURSOR 11 U2304 1 9 U2414 2 U2415 2 DELTA DELAY 11 U2305 7 5 U301 12 R330 U313 6 R330 DIG HORIZ POS 11 U2305 14 6 U301 3 R369 2 U702 3 R722 DLY END 0 5 U315 15 R388 4 U602 36 DLY END 1 5 U315 2 R387 4 U602 35 DLY SEL 4 U600 25 5 U301 11 3 U1106 9 FLIC WR 8 U2518 11 4 U602 40 R647 HDO 4 U600 2...

Page 283: ... U600 8 SLIC WR 8 U2518 12 4 U600 3 SRO CLK 4 U606 12 1 U171 3 U172 3 Q171 U173 3 R176 SRI CLK 4 U606 4 5 U302 3 U303 3 SRI CLK TTL 4 U501 13 3 U1103 3 SR DATA 4 U606 6 U171 2 5 U302 2 SW BD DATA 10 U2002 9 8 U2515 13 R2510 SW BD SR LOAD 8 U2518 14 10 U2001 1 U2002 1 SW BD SR SHIFT 8 U2518 13 10 U2001 2 U2002 2 SYS RESET 8 U2506 8 9 U2400 28 TB CAL 8 U2501 22 3 U1106 1 R1170 TIME VAR 11 U2308 12 R...

Page 284: ...U421A A U431A B U1106A U 1103 A SLOPE TV FIE LD A AUX DATA TV TRIGGER DETECTOR U ilO lA U 11 0 2 A B U1104A B C 0 1 1 0 1 0 1 1 0 6 A TRIGGER COUPLING SELECTOR U421B TV TR IG BW L IM IT A TRIGGER BW L IM IT U441E F 0440 044 4 A TRIGGER COMPARATOR U421C G D X Y 3 B TRIGGER SOURCE SELECTOR U431A i AUX DATA VOLT CAL 0 2 BW FULL B B TV TR IG EN SELECTED B T R I66ER B T R I6GER COUPLING SELECTOR U431B ...

Page 285: ...2246 1Y and 2246 Mod A Service Figure 9 5a Detailed 2246 1Y or 2246 Mod A block diagram part 1 REV JUN 1991 6557 93 7062 06 ...

Page 286: ...To avoid electric shock and instru m e nt dam age alw ays connect the p o w er co rd o f the instru m e n t under test through an isolation tran sfo rm er when view ing w aveform s o r m easuring voltages in the lo w v o lta g e p ow er supply DC VOLTAGES Dc voltages shown the schematic diagrams are typi cal of a normally operating instrument Voltages are referenced to chassis ground except in the...

Page 287: ......

Page 288: ... 0 8 Static Sensitive Devices See Maintenance Section COMPONENT NUMBER EXAMPLE Component Number A23 A 2 R1234 Schematic Assembly L Circuit Number Subassembly Number Number if used Chassis mounted components have no Assembly Number prefix see end of Replaceable Electrical Parts List Figure 9 6a A lO M aln board for SN B715000 and above 2246 1Y and B12j0000 and above 2246 MOO A A D D J U N 1991 ...

Page 289: ... R 1028 R1150 S o S C 9 j Q C Q C O ECJ CJ r o o r R 651 R673 R674 R6S 2 CR0O2 _ C501 0CC K U 1108 R502 CD cm a I LO V C MC M C M cm 5 2 2 5 5 Q C r lo C MC MC M s O iD r r S 33 m N C MID m fn r Q e R379 0316 C DO r oo m co oc Q C ao cei io C019 C S j frj O S S i R806 g S S Q 2 7 0 ggg a2 i5 R 2 7 9 6 C R Z 7 0 K r p r r uc1lp 9 WB06 W0O8 _ f t Q2707 S R 2 7 1 0 VR2701 C 2 7 0 3 3 2 7 7 J C 2 70 4...

Page 290: ...R NUMBER NUMBER NUMBER NUMBER B25 12 J16 7 P26 7 J2726 12 P27 7 FL2201 12 P25 12 VI 7 COMPONENT NUMBER EXAMPLE Component Number Assembly Number A23 A2 R1234 t t h Subassembly Number if used Schematic Circuit Number Chassis mounted components have no Assembly Number prefix see end of Replaceable Electrical Parts List ...

Page 291: ... 4F C818 13 8J CR263 2 4F C819 6 7J CR301 5 7C C820 6 8J CR432 3 2G C821 13 8J CR462 3 1G C822 13 8J CR603 4 4M C860 6 7J CR612 4 6N C870 6 8J CR801 6 5M CIRCUIT NUMBER SCHEM NUMBER BOARD LOCATION CIRCUIT NUMBER SCHEM NUMBER BOARD LOCATION AT117 ATI 27 C l C2 CIO C 1 1 C20 C21 C101 Cl 02 C103 Cl 04 Cl 05 Cl 06 C107 Cl 08 c m Cl 12 Cl 13 Cl 14 C121 Cl 22 Cl 23 C l 24 Cl 25 Cl 26 C131 C132 C133 C l ...

Page 292: ... 7 9N 0307 5 8D 02708 7 6L R214 2 6H DS2702 7 9M 0308 5 8F 02709 7 6L R215 2 6N DS2703 7 9M 0309 5 8F 02711 7 10L R216 2 8G DS2704 7 9M 031OA 5 8E 02712 7 10L R217 2 TO Q310B 5 8E 02713 7 11L R218 2 5E J11 1 6A Q311 5 8F 02715 7 6M R219 2 5C J12 1 5A 0312 5 8E R220 2 4E J13 1 3A 0313 5 9F R12 1 6C R221 2 4E J14 1 1A 0315 5 9E R13 1 6C R222 2 2L J15 7 7A 0316 5 9F R22 1 5C R223 2 2M J927 7 11B 0317...

Page 293: ...H DL22 3 3K 0302 5 8E 02703 7 7N R209 2 1M Q303 5 8F 02704 7 6N R210 2 6E DS901 7 8B 0304 5 8F 02705 7 7M R211 2 6E DS902 7 9B 0305 5 7E Q2706 7 7M R212 2 2L DS903 7 11B Q306 5 7E 02707 7 6M R213 2 2M DS2701 7 9N 0307 5 8D Q2708 7 6L R214 2 6H DS2702 7 9M 0308 5 8F Q2709 7 6L R215 2 6N DS2703 7 9M Q309 5 8F Q2711 7 10L R216 2 8G DS2704 7 9M Q310A 5 8E 02712 7 10L R217 2 7G Q310B 5 8E Q2713 7 11L R...

Page 294: ... R491 3 3J R666 4 4K R303 5 8F R381 5 10F R492 3 3J R669 4 3L R304 5 8F R382 5 7G R493 3 2J R670 4 4K R305 5 8G R383 5 9G R494 3 2J R671 4 3M R306 5 7C R384 5 8D R495 3 2J R672 4 3M R307 R308 R309 R310 5 5 5 5 7C 7C 9C 7C R385 R386 R387 R388 5 5 5 5 9F 9F 8F 8F R496 R497 R498 3 3 3 2J 2J 3J R673 R674 R701 4 4 13 4M 4M 9J R311 5 8C R390 13 8F R501 4 1L R702 2 9J R312 13 7D R392 13 7C R502 4 5N R703...

Page 295: ...7 9M U442 3 3H R891 6 8K R1128 3 5J R2758 7 9L U442 13 3H R892 6 8K R1131 3 4G R2760 7 10M U501 4 5M R893 6 8J R1132 3 4G R2765 7 7M U501 13 5M R894 6 8J R1133 3 4H R2783 13 7N U502 4 4N R896 6 9J R1134 3 4H R2784 7 7N U502 13 4N R897 6 8K R1135 3 4H R2785 7 8N U503 4 5N R898 6 7K R1136 3 4H R2786 7 6N U503 13 5N R906 7 10B R1142 3 4H R2787 7 6N U506 7 10C R907 7 10A R1143 3 4H R2788 7 7N U506 13 ...

Page 296: ...R303 5 9G W207 2 6G W 611 4 3N W1223 13 7D VR304 5 9G W208 2 6G W802 5 8G W1231 13 8K VR308 5 9F W209 2 6G W805 6 6M W1237 13 7K VR309 5 7G W210 2 10G W806 6 7K A 1 947 1A 7n VR310 5 9G W223 2 5D W807 6 6M V V 1 C M Y A 194A i j 1A u AM VR311 5 8E W231 2 2E W808 6 7K V V1 A 1 94Q 1O 1A DM AM VR312 5 10E W232 2 2E W810 6 6H W 1chU 1O DM VR801 6 8J W304 5 8G W811 6 5H W1250 13 8K VR2701 7 6M W305 6 ...

Page 297: ...o c n C LJ 0 o E a CD CO T5 O 2 H C O CM CM a cl c CO to tsw zsto 3sta m s i y o1 3 tm frtr nry ze1 3 tetjtt ieid 2oi3 ztM ztr C O CM CM CM CO CD CO co co o ...

Page 298: ... 5 0 0 D to to H o y 4 in te a c B f Paz u so 3 s s g I s s c o o c i to a ID N CM tO ID D C OC O C O CO C O CO to to C O ac as ac U 604 0 6 0 8 5 X H aeoctP 6 C 608 r 2 c d c j 646 r g sen t o o t o j o O o M CO lo CO to CD O r a Ss E S t S K T m 0 0 to to t o l f y ______ io i jc o io l o i o g K j 6 4 5 to S in to D jtO lo 0 10 to to P r i ao to to 0C f 5 o zc e _ fo s a K ocqcK u i K O o c g Q...

Page 299: ... 13 2L C2712 7 8N C l 37 1 2C C306 5 7C C611 4 4K C2713 7 6N C l 38 1 2C C307A 5 7E C612 4 3K C2715 7 10L C l 39 2 2C C307B 5 7E C613 13 IN C2716 7 10L C l 40 13 2C C307C 5 10F C614 4 4M C2717 7 10L C151 1 IOC C308 5 7E C701 13 10J C2719 7 10M C152 1 2A C309 13 7H C702 13 9J C2720 7 8L C153 1 IB C310 5 7E C703 13 10K C2721 7 6K C l 54 1 IB C311 5 7F C704 13 9K C2723 7 7L C l 55 13 2B C312 5 9E C70...

Page 300: ...9E R107 1 7B R234 2 5H K104 1 5D 0325 5 10E R108 1 7B R235 2 3E K105 1 6D 0326 5 7F B ill 1 6A R238 2 2D K107 1 4A 0328 5 8E R113 1 5A R240 2 2E K108 1 4A 0329 5 9E R114 1 5A R241 2 2E K109 1 4B Q330 5 8F R115 2 5D R242 2 1L K110 1 5B 0331 5 9F R121 1 4A R243 2 1M K ill 1 4D 0332 5 9F R123 1 4A R244 2 5H K112 1 4D 0333 5 8F R124 1 3A R245 13 3D Q440 3 2H R125 2 4D R248 2 2E L101 13 2C Q444 3 2F R1...

Page 301: ...74 4 4M R313D 5 7D R381 5 10F R493 3 2J R686 4 3L R314 5 7C R382 5 7G R494 3 2J R687 4 3L R315 5 10E R383 5 9G R495 3 2J R688 4 3K R316 5 7F R384 5 8D R496 3 2J R689 4 2K R317 5 8E R385 5 9G R497 3 2J R690 4 2K R318 5 8E R386 5 9G R498 3 3J R691 4 2L R319 5 8F R387 5 8G R501 4 1L R692 4 2L R320 5 8E R388 5 8G R502 4 5N R693 4 2L R321A 5 8D R390 13 8F R503 7 10C R694 4 2L R321B 5 8D R392 13 7C R504...

Page 302: ...j R311 5 8C R376 5 10E R486 3 IE R670 4 4K 2 2D i R312 13 7D R377 5 8H R487 3 IF R671 4 3M 2 2E R313A 5 7D R378 5 6J R490 3 2J R672 4 2M 2 2E R313B 5 7D R379 5 7H R491 3 3J R673 4 4M 2 1L i R313C 5 7D R380 5 6J R492 3 3J R674 4 4M 2 1M I I R313D 5 7D R381 5 10F R493 3 2J R686 4 3L 2 5H l R314 5 7C R382 5 7G R494 3 2J R687 4 3L 13 3D i R315 5 10E R383 5 9G R495 3 2J R688 4 3K 2 2E R316 5 7F R384 5 ...

Page 303: ... 3 5J RT201 2 4F U441A 3 1H R861 6 7J R1126 3 5J U441B 3 1H R862 6 7J R1127 3 3J U112 1 6C U441C 3 1H R863 6 7J R1128 3 5J U112 13 6C U441D 3 1H R871 6 8J R1131 3 4G U122 13 4C U441E 3 1H R872 6 8J R1132 3 4G U122 1 4C U441F 3 1H R873 6 8J R1133 3 4H U171 1 3B U441 13 1H R891 6 8K R1134 3 4H U171 13 3B U442A 3 2H R892 6 8K R1135 3 4H U172 1 3B U442B 3 2H R893 6 8J R1136 3 4H U172 13 3B U442C 3 2H ...

Page 304: ...A D D J U N 1991 ...

Page 305: ... 3A W505 4 3N W1221 13 1J U1001B 7 7L W14 1 2A W506 4 3N W1222 13 6D U1001C 7 7L W16 7 7L W507 4 5N W1223 13 7D U1001D 7 7L W17 6 7K W510 4 6M W1231 13 8K U1001 13 7L W18 6 8K W603 4 4M W1237 13 7L U1101A 3 4G W19 2 10H W604 4 3L W1247 13 7D U1101B 3 4G W20 2 9H W605 4 5L W1248 13 6H U1101 13 4G W100 1 5C W606 13 IK W1249 13 5H U1102A 3 4G W101 1 5C W607 13 5M W1250 13 8K U1102B 3 4G W102 1 3B W61...

Page 306: ...5 5 o o K 1 0 9 C M O R 121 r C 2 0 C M o A T I 2 7 W 1 2 2 5 C 21 J 1 2 J11 W 1 1 C M o o o cc 5 o o o RIO o o coC O h oo cccc o o o o C CC C 5 0 0 1 5 0 C m jy C OC OM C D o om o oco o C Ococ oc oc o C DC DC DC D J C DC D aca cec ccc cc cc O cc C DC D DC D cc cc cc tc R941 930 co u is Q 9 0 7 0 9 0 5 C O lO U 5 0 6 0 9 0 8 C O o C D R 9 0 7 o C O R 9 0 8 N 2 2 C DC D U D cc D S 9 0 3 0 e W1216 M...

Page 307: ...315 5 C806 13 CR819 6 P2304 7 Q1105 3 Cl 40 13 C316 13 C807 6 CR935 7 O il 06 3 C151 1 C317 13 C808 6 CR936 7 Q131 1 Q2701 7 Cl 52 1 C318 13 C809 6 CR1001 7 Q151 1 Q2702 7 Cl 53 1 C319 6 C810 6 CR1002 7 Q171 1 Q2703 7 Cl 54 1 C320 13 C811 2 CR1003 7 Q250 2 Q2704 7 Cl 55 13 C321 5 C814 6 CR1004 7 Q251 2 Q2705 7 Cl 56 13 C326 5 C815 13 CR1005 7 Q252 2 Q2706 7 Cl 57 1 C329 5 C816 13 CR2701 7 Q253 2 Q...

Page 308: ...R388 5 R508 7 R720 2 R935 7 R213 2 R307 5 R390 13 R510 7 R721 2 R936 7 R214 2 R308 5 R391 5 R512 7 R722 2 R937 7 R215 2 R309 5 R392 13 R601 4 R723 13 R938 7 R218 2 R310 5 R393 5 R602 4 R724 2 R939 7 R219 2 R311 5 R394 5 R603 4 R725 2 R940 7 R220 2 R312 13 R395 5 R604 4 R726 2 R941 7 R221 2 R313 5 R396 5 R605 4 R727 2 R1001 7 R222 2 R314 5 R401 3 R606 4 R728 2 R1002 7 R223 2 R315 5 R402 3 R607 3 R7...

Page 309: ...08 7 R720 2 R935 7 3 R213 2 R307 5 R390 13 R510 7 R721 2 R936 7 7 R214 2 R308 5 R391 5 R512 7 R722 2 R937 7 7 R215 2 R309 5 R392 13 R601 4 R723 13 R938 7 7 R218 2 R310 5 R393 5 R602 4 R724 2 R939 7 7 R219 2 R311 5 R394 5 R603 4 R725 2 R940 7 7 1 R220 2 R312 13 R395 5 R604 4 R726 2 R941 7 7 R221 2 R313 5 R396 5 R605 4 R727 2 R1001 7 7 R222 2 R314 5 R401 3 R606 4 R728 2 R1002 7 7 R223 2 R315 5 R402 ...

Page 310: ...U1001 13 W231 2 W1209 13 R1170 3 R2789 7 U310 13 U1101 3 W232 2 W1210 13 R2701 7 R2795 7 U311 5 U1101 7 W235 13 W1216 13 R2702 7 R2796 7 U311 13 U1101 13 W304 5 W1217 13 R2703 7 U313 5 U1102 3 W305 6 W1218 13 R2704 7 RT201 2 U315 5 U1102 13 W401 3 W1221 13 R2705 7 U315 13 U1103 3 W403 3 W1222 13 R2706 7 U112 1 U316 5 U1103 13 W404 3 W1223 13 R2708 7 U112 13 U316 13 U1104 3 W405 3 W1231 13 R2709 7 ...

Page 311: ...2246 1Y and 2246 Mod A Service WAVEFORMS FOR DIAGRAM 1 0 V r l III B f e I l i 6555 39 ...

Page 312: ...NUMBER Cl 85 1 R185 1 W106 1 Cl 86 1 R188 1 W107 1 Cl 88 1 R189 1 W108 1 W212 1 Q181 1 VR101 1 W222 1 Q182 1 W105 1 I Static Sensitive Devices See Maintenance Section COMPONENT NUMBER EXAMPLE Com ponent Number Assembly Number A23 A2 R1234 X T Subassembly Number if used Schematic Circuit Number Chassis mounted components have no Assembly Number prefix see end of Replaceable Electrical Parts List RE...

Page 313: ... 85 1 R185 1 W106 1 Cl 86 1 R188 1 W107 1 Cl 88 1 R189 1 W108 1 W212 1 Q181 1 VR101 1 W222 1 Q182 1 W105 1 Static Sensitive Devices See Maintenance Section COMPONENT NUMBER EXAMPLE Com ponent Number Assembly Number A23 A 2R 1234 T T Subassembly Number if used Schematic Circuit Number A9 2 mV BANDWIDTH Chassis mounted components have no Assembly Number prefix see end of Replaceable Electrical Parts...

Page 314: ...15 14 13 12 11 10 9 8 7 6 5 12 11 10 9 8 7 AT117 A TI 271 1 2 3 4 5 6 6555 70 Figure 9 8 Hybrid pin identifiers ...

Page 315: ...81 8J IB C l 05 IF 6B CR171 5B 3B R104 7B 7A R185 3L 1C Cl 06 2G 5A R105 IB 7A R188 6L 1A C l 07 4F 5B J11 1A 6A R106 3B 7B C108 5G 4A J12 4A 4A R107 7B 7B U112 1L 6C c m IB 10C J13 7A 3A R108 8B 7B U122 4L 4C Cl 12 IF 6A J14 8A 1A R111 1A 6A U171 4C 3B C l 13 IF 5A R113 1G 5A U172 5D 3B Cl 14 2J 5C K100 IF 6A R114 IF 5A U173 6E 3C C121 3B 10C K101 1G 5A R121 3A 4A U174 IE 3A C l 22 4F 4A K102 1G ...

Page 316: ... 15Va CR171 W a J 0047 Q171 FROM U606 12 3E 3 U171 4094 2 f 7 1 1 1 1 KlOfl 1 1 1 r u i si r 1 1 fO Y C108 1 U172 4094 C2 EN3 SR68 C1 n r r 10 2D 3V n CH2 UQx CH 2 PREAMP 1 CH 2 PREAMP 0 2 5Vp 0103 8 2K J W v ATTEMUATor s g a in CONTROL REGISTERS i SRO f W f C H 3 PRB C103 i 107 i c i3 1 T0 u5 6 1 0221 1 0 KT 022 3 e 9 C2 EN3 SRG8 Cl n r r 10 2D 3V 1 CH 2 INVERT CH 3 PREAMP 1 CH 4 PREAMP 1 ZERO HY...

Page 317: ...CHEM LOCATION BOARD LOCATION 8K 1C 8K 1C 8L 1C 8J IB 8J IB 5B 3B 5B 3B 6C 3C 6C 2C 6E 20 6E 3C 6J 2B 8J IB 3L 1C 6L 1A 1L 6C 4L 4C 4C 3B 5D 3B 6E 3C IE 3A 4E 3C IB 6A 3A 5A 7A 3A 7A 2A 4F SC 5G 50 5G 3B ...

Page 318: ...13 2K 6C R159 8L 1C C21 5J 4B R22 4K 4C R161 8J IB C101 IB 6A CR131 6H 2B R23 4K 4C R162 8J IB C l 02 3B 4A CR151 8H IB R101 IB 6A R171 5B 3B C l 03 7B 3A CR171 5B 3B R102 3B 7A R175 5B 3B C l 04 8B 1A R103 7B 7A R176 6C 3C C l 05 IF 6A J11 1A 6A R104 7B 7A R177 6C 2C C106 2G 5A J12 4A 4A R105 IB 7A R178 6E 2C C l 07 4F 5A J13 7A 3A R106 3B 7A R179 6E 3C C l 08 5G 4A J14 8A 1A R107 7B 7B R180 6J 2...

Page 319: ......

Page 320: ......

Page 321: ...2246 1Y and 2246 Mod A Service WAVEFORMS FOR DIAGRAM 2 SET READOUT CONTROL CCW OFF 6555 40 ...

Page 322: ... C271 3H 4F R209 7C 1M R281 4J 3F U UJn DD 7 a i Uvj i n n C272 3H 4F R210 IE 6E R284 6E 6F U iUoD D on 4A N C273 3H 4F R211 IE 6E R285 6G 6E i lonon oo OQ lULa C274 3H 4F R212 2C 2L R286 7F 5G i loin OD 10G C275 4G 4F R213 2C 2M R287 7F 5F U c J 1D 5E C491 2E 2F R214 2C 6H R288 7G 6F U220 2D 4E C492 3E 2F R215 7C 6N R289 6G 5F U230 3D 3E C493 4E 2E R216 7C 8G R290 7F 6F U240 5D 2E C494 6E 2F R217...

Page 323: ......

Page 324: ......

Page 325: ...H R269 2J 5F U203A 6B 10G C271 3H 3F R210 IE 5E R270 3J 4F U203B 7B 10G C272 3H 4F R211 IE 5E R271 4H 3F U203C 7B 10G C273 3H 4F R212 2C 3L R272 3H 4F U203D 8B 10G C274 3H 4F R213 2C 4M R273 3H 4F U210 ID 5D C275 4G 4F R214 2C 5H R274 3J 3E U220 2D 4D C491 2E 2F R215 7C 6M R275 3G 4E U230 3D 3E C492 3E 2F R218 2C 5E R276 4G 4F U240 5D 2E C493 4E 2F R219 1C 5C R277 3G 3F U260 2F 5F C494 6E 2F R220 ...

Page 326: ...A B C P E F G ...

Page 327: ......

Page 328: ...Mod A Service WAVEFORMS FOR DIAGRAM 3 0 0 0 V SET HORIZONTAL MODE TO ALT CONNECT 4 DIVISION COMPOSITE VIDEO SIGNAL SET TRIGGER MODE TO TV FIELD CONNECT 4 DIVISION COMPOSItr VIDEO SIQNAL SET TRIQQ1R MODE TO TV FIELD MORE ...

Page 329: ...TIVE GOING FOR BOTH 2245A AND TEST OSCILLOSCOPE jr v v 6 201 CONNECT 4 DIVISION COMPOSITE VIDEO SIGNAL SET TRIGGER MODE TO TV FIELD 0 i r t 0 V L a L J r n il CONNECT 4 DIVISION COMPOSITE VIDEO SIGNAL SET TRIGGER MODE TO TV FIELD SET SLOPE TO A NEGATIVE GOING FOR BOTH 2245A AND TEST OSCILLOSCOPE DIAGNOSTIC EXERCISE TIME REF AT 5 ns 6555 41 6557 91 ...

Page 330: ... 6D 1H L462 6K 1G R456 6F 1G R460 6K 1G Q440 1L 2H R461 6K 1G Q444 2L 2F R462 6L 1G PartialA10 also shown on diagrams 1 2 4 5 6 7 and 13 CIRCUIT NUMBER R463 R470 R471 R472 R473 R474 R475 R476 R477 R478 R479 R483 R484 R485 R486 R487 R490 R491 R492 R493 R494 R495 R496 R497 R498 R1103 R1104 R1105 R1106 R1110 Rim R1112 R1113 R1114 R1115 R1116 R1117 R1118 R1120 R1121 R1122 R1123 R1124 R1125 R1126 R1127...

Page 331: ......

Page 332: ...H 4H 3H 4H 2D 3G 6F 4G 6F 4G 5A 5K 5A 5K 3A 4J 1C 3F IK 3F 1L 3F 7D 2F 6J 2F 6L 2F 4K 1H 5K 1H 7K 1H 4K 1H 2K 1H IK 1H 6M 2H 4K 2H 1M 2H 2E 4G 6G 4G 3G 4G 3H 4G 5B 5K 3J 4H 4G 4H 6H 4H 2B 5L 8J 5L 4J 5L 2D 4H 3J 3H 1M 3J 2M 3J 5C 5K 3D 3J 6C 5K 8J 5L 3K 5K ...

Page 333: ...420 2E 4G R495 7B 2J U441C 7K 1G R421 1H 4H R496 8B 2J U441D 4K 1G R422 2H 4H R497 8B 2J U441E 2K IF R423 2H 4G R498 3B 3J U441F IK 3F R424 2H 4G R607 2N 3J U1101A 2E 2F R425 2H 4H R1103 3D 2M U1101B 6G 2F R426 2E 4H R1104 3E 2M U1102A 3G 3F R430 2K 3H R1110 5E IN U1102B 3H 2F R431 IK 3H R im 4E IN U1103 5B 3F R432 2L 3H R1112 4E IN U1104A 3J 3J R440 1L 3H R1113 4F IN U1104B 4G 3J R441 1L 3H R1114...

Page 334: ...3V 1 AUXILIARY SHIFT REGISTER TRIGGER SWITCHING LOGIC 4M J r _ BTS 0 FROM U600 27 4M r BTS l 4M J r BTS 2 B TRIGGER SOURCE SELECTOR TV TRIGGEI DETECTOR A SLOPE 7 5VE B TV TRIG EN w no i MAG TO UB02 6 5B VEAt COMP EN TO Q703 2L 2 TV FIELD SEL 5T7 TO C319 U301 9 6A 6 R456 10K VA R1154 R1155 2M 2M WV t W S t a t i c S e n s i t i v e D e v i c e s See Maintenance Section B TRIGGER COUPLING SELECTOR 2...

Page 335: ...K 3A IK ID 3G IK 3G 1M 3G 7D 2G 6K 2G 6M 2G 4K 2H 5K 2H 7K 2H 4K 2H 2K 2H IK 2H 2E 2M 6G 2M 3G 1L 3H 1L 5B 2K 3J 2M 4G 2M 4J 2M 2B 2J 8J 2J 8H 2J 2E 2H 6J 1J 6F 1H 8L 1J 3J 2H 3J 2J 3J 1J 3L 3J 2E 2J 2E 1J 1M 3J 2M 3J SC 2K 3K 2K 5A IK 4H IK 8J 2K 4H 2K 6H 2K ...

Page 336: ...Service I 1 3 6 V 0 0 2 65 V WAVEFORMS FOR DIAGRAM 4 SET SEC DIV TO 20 M S WAVEFORM VARIES WITH SETTING OF TRIGGER HOLDOFF CONTROL SET A B SEC DIV TO 0 1 ms READOUT CONTROL CCW OFF AND HORIZONTAL MODE TO ALT 1 1 j w4 L 0 I i ...

Page 337: ......

Page 338: ... 3E 3M CR603 5J 4M R623 6F 3K R664 6J 3K U606C 4E 3M CR612 8H 6N R624 4J 2L R665 5H 4M U606D 4E 3M 0600 8J 3N 3N R625 4J 2L R666 5J 4K U606E 2L 3M R626 1G 4L R669 3H 3L U606F 3E 3M 0601 8J R627 2G 3L R670 4J 4K 0602 0603 0604 0605 0606 0607 3K 3K 2K 2K 3J 3J 2K 2K 3K 3K 2K 2K R628 4H 2K R671 6K 3M W502 4C 3M R630 6L 2N R672 6J 3M W503 7C 3M R631 4J 3L R673 5D 4M W504 5C 3M R636 8H 6N R674 5D 4M W5...

Page 339: ...3 FROM R388 1N d ly END 1 r 35 1N F R O M R387 m EE I pp 1 SRO CLK TO A 0171 R171 R17B 6i U171 3 U172 3 U303 3 A IU 3 a fcSRl CLK TTL X ra TO U1 103 3 3 5A BEAM FINO TO R730 U701 21 2 U802 14 6 6B R2705 7 BE I 5Vk SR DATA 10 i S a C125 U 1 7 1 2 X SR DATA TO 4 R366 U302 2 N X RO VERT E N 7C 0 R215 L RO REQ DLY g g TO CR802 S S R648 470 SBT 5VC R615 470 SVk R616 470 R617 470 TRIGGER LOGIC RO CH 1 P...

Page 340: ......

Page 341: ...F 5M R618 6F 4K R653 3F 4N U604C 8F 5M DL22 2F 2G R619 6F 4L R654 4G 5N U606A 5E 5M R620 5F 4K R655 4F 5N U606B 3D 5M 0600 8J 5J R621 5G 4L R656 5H 4J U606C 4E 5M 0601 8J 5K R622 6G 5K R657 4J 4K U606D 2L 5M Q602 3K 4M R623 6G 5K R658 5H 4J U606E 2L 5M 0603 3K 4M R624 4K 5N R659 5J 3K U606F 2D 5M 0604 2K 4M R625 4K 5N R662 4K 4M 0605 2K 4M R626 1H 3L R663 6H 2K W505 4E 5N 0606 2K 4M R627 1H 2L R66...

Page 342: ...M U702 7 M U A A SHP END M FROM R37B 6M S B SHP END FROM R380 FROM R416 6M SRO CLK TO 0171 R171 X R176 U171 3 6B y S U172 3 SRI CLK vv U302 3 U303 3 3N S F R O M M S T01H1104TTL SA 1N I FR 0M ER387 BEAM FIND TO R730 U701 21 U802 14 BB R2705 8 E R655 820 SR DATA TO C125 U171 2 4B SR DATA TO R36B U302 2 1A I f U606A 7417 TRIGGER LOGIC i U602 I FAST LOGIC 6 IC DLY12 DLY2 RO CH 1 POS EN TO R212 U202 1...

Page 343: ...C l rti ...

Page 344: ...WAVEFORMS FOR DIAGRAM 5 2246 1Y and 2246 Mod A Service HORIZ MODE A A SEC DIV 2M S HOLDOFF MIN CCW ...

Page 345: ...HORIZ MODE ALT A SEC DIV 2M s B SEC DIV 5 mS HOLDOFF MIN DELAY INTENSIFIED ZONE STARTS MIDSCREEN ...

Page 346: ...54 6B 9E U307 2F 7D CR301 3C 7C R313C 3D 7C R355 6C 9E U308 2G 7D R313D 3D 7C R356 7B 9F U309A 4A 7C 0301 3D 7C R314 3D 7C R357B 1M 8F U309B 3D 7C 0302 4B 8E R315 8K 10E R357C 1M 8F U310 5F 9D Q303 4C 8E R316 5D 7F R357D 3M 8F U311 5G 9D 0304 4D 8F R317 4B 8E R357E 3M 8F U313 3M 8E 0305 4J 7E R318 4C 8E R359 2M 8F U315A 1M 8F Q306 4J 7D R319 5B 8F R360 3M 8F U315B 4M 8F 0307 3H 8D R320 5K 8E R361 ...

Page 347: ...BEV JUNE 1991 7062 18 ...

Page 348: ... 8D 1M 8F 1M 9F 1M 8F 3M 8F 5E 8D 4H 10E 6H 10E 5J 7E 7J 9E IK 8D 2K 8D IB 8C 2C 9C 3H 8D 6H 8D 2F 7D 2G 7D 4A 7C 3D 7C 5F 9D 5G 9D 3M 8E 1M 8F 4M 8F 2M 8F 6M 7H 6L 7H 6L 7H 6M 7H 6B 6G 5B 6G 8B 8G 7B 8G 7C 9F 5C 6G 8C 9G 6K 8E 8K 10E 7K 8G 5K 8G ...

Page 349: ...2246 1Y and 2246 Mod A Service WAVEFORMS FOR DIAGRAM 6 6555 43 I ...

Page 350: ... 5G 8J R827 4C 9H U301B 6B 9D C814 6J 8J R828 3K 73 U801A 7H 7H C817 6C 6G R353 6B 9D R829 3K 7K U802 3C 8H C819 7L 7J R358 6B 9D R830 5K 8K C820 5H 8J R369 6B 8D R831 5K 8J VR801 4H 8J C860 3G 7J R801 3K 8K R836 4C 8H C870 5G 8J R802 3L 7K R854 5F 8H W17 3M 7K C880 4G 8J R803 4J 8K R855 4F 7H W18 5M 8K R804 4J 8K R856 4E 8H W305 6B 10D CR801 5B 5K R805 4J 8J R857 4E 8H W805 5B 6M CR802 6B 4M R806...

Page 351: ...A 1 B i C D i E i F i G H d r i v e r a m p l i f e r s CIRCUIT NUMBER 15V 7 5V 5V GNO U301 16 8 U801 8 U802 16 4 2246 1Y AND 2246 MOD A REV JUNE 1991 7062 37 ...

Page 352: ...EO DLV 5E 4 FROM v U606 B R652 3 E 0S BEAM FIND J t N y F R 0 M U503 7 U301B is DIG HORIZ POS 10 X FROM W2302 6 6C S F R 0 M XM l103 5 n 0 MUX R3 5 3 J 1 5K 0 1 1 3 n W305 R369 330 9 0 3 1 9 I 2X0 2X1 HORIZ R825 X10 GAIN 5K b7bv J m m QQAQi 2 7KS 4 H T 02 CIRCUIT NUMBER 15V 7 5V 5V GND 5V U301 16 8 7 U801 8 4 UB02 16 4 9 S t a t i c S e n s i t i v e D e v i c e s See Maintenance Section FOR INTEG...

Page 353: ... R369 R801 R802 R803 R804 R805 R806 R807 R808 R809 R810 R811 R812 R813 R814 R815 6K 5H 5H 5E 3E 6B 6B 6B 2K 3L 2J 2J 4H 2H 5B 4D 4D 5E 7D 7D 6K 6J 6J 8J 8J 8J 8H 7H 8D 8D 8D 7K 7K 7J 7J 7J 7J 9G 7H 8H 8H 7H 8H 8K 8J 8J R816 R819 R820 R821 R822 R823 R825 R826 R827 R828 R829 R836 R840 R841 R842 R843 R844 R845 R846 R847 R848 R849 R850 R851 7H 5L 7L 7L 7L 4C 7C 7C 4C 3K 6K 4C 2K 4F 3F 2G 2G 3H 4K 5G 5...

Page 354: ...A L B i C 1 D 1 E i F i G 1 2 3 4 5 6 7 8 2246 1Y AND 2246 MOD A _________A fc A A REV JUNE 1991 7062 19 ...

Page 355: ...I BOARD LOCATION 8K 8J 8H 7H 8H 8H 7J 8D 7H 8H 8J 8J 7K 8K 10D 6L 6K 6L 6K 6G 5H I ...

Page 356: ...NT NUMBER EXAMPLE Component Number A23 A2 R1234 J Schematic 1 Circuit Num ber Subassembly Num ber Num ber if used Chassis mounted components have no Assembly Number prefu _ See end of Replaceable Electrical Parts List A8 CRT CONTROL BOARD CIRCUIT SCHEM CIRCUIT SCHEM NUMBER NUMBER NUMBER NUMBER R901 7 R902 7 W900 7 R903 7 W900 13 R905 7 AS CUT CONTROl OAW E _____ i R903 ...

Page 357: ... 0 6081 32 7062 09 WAVEFORMS FOR DIAGRAM 7 SET READOUT CONTROL CCW OFF AND A INTEN CONTROL CW FULLY ON SET READOUT CONTROL CCW OFF AND A INTEN CONTROL CW FULLY ON SET READOUT CONTROL CCW OFF AND A INTEN CONTROL CW FULLY ON ...

Page 358: ...VEFORMS FOR DIAGRAM 7 SET READOUT CONTROL CCW OFF AND A INTEN CONTROL CW FULLY ON SET READOUT CONTROL CCW OFF AND A INTEN CONTROL CW FULLY ON ov 1 i__ 1 r i r n f 0 j P P E 1 mmm SET READOUT CONTROL CCW OFF AND A INTEN CONTROL CW FULLY ON ...

Page 359: ...CCW OFF AND A INTEN CONTROL CW FULLY ON SET READOUT CONTROL CCW OFF A INTEN CCW OFF B ENTEN CW FULLY ON AND HORIZONTAL MODE TO ALT SET READOUT CONTROL CCW OFF A INTEN CCW OFF B ENTEN CW FULLY ON AND HORIZONTAL MODE TO ALT 6555 44 ...

Page 360: ...IOC CR2713 6H 10L R906 4E 10B CR2714 5H 11L R907 4E 10A CR2715 5J 9L R908 4F 10A CR2716 5K 9M R909 5D 8B CR2717 6K 9M R910 2L 10B CR2718 5J 8L R911 2L 8A R920 3G 8B DS901 4E 8B R921 3G 8B DS902 4F 9B R922 3H 9C DS903 4F 11B R923 3H 9C DS2701 8L 9N R924 2H 9C R925 3H 9B Mi 7 4 7K u M R930 1H 8B h 7 n M ni R931 1H 7A Mi 727 M 7 1 R932 1H 7B Mr 7r 0 M n i R933 1H 7B M U m 7 1 R934 2G 7B M 7 11 m UH R...

Page 361: ...OBE ADJUS1 B REF TRIG LVL r B DELTA TRIG LVL DIG HORIZ POS 4 REF DELAY A TRIG LVL TO W410 TO R1106 TO R925 3H B DELTA TRIG LVL TO R1105 DIG HORIZ POS TO R710 R722 2L 2 nee nei tv t o oonn a i v a CONTROL MULTIPLEXER DELTA DELAY pee nei tv Tn nonn MAIN BD MUX f TO FR0M J2J02 POTS m 4 P0T6 P0T7 f ...

Page 362: ......

Page 363: ...8D 7L R1009 8C 7K R2765 7F 7M C2723 6E 7L Q2701 7H 7N R1010 8B 7K R2784 3L 7N C2724 8K 8M 02702 7H 7M R1020 5B 7L R2785 3L 8N C2758 6K 10L Q2703 7H 6M R1021 5B 7L R2786 4L 6N C2759 7F 7M Q2704 8H 6N R1022 6B 7L R2787 5L 6N C2783 3L 8N Q2705 7G 6M R1023 6B 7L R2788 5L 6N C2784 5L 6N 02706 8F 7M R1024 7B 7L R2789 5L 8N C2785 5L 8N Q2707 7F 6M R1025 7B 7L R2795 7E 7L 02708 5E 6L R1028 5D 4K R2796 6F ...

Page 364: ... 2 PROBE I CONTROL MULTIPLEXER REF DELAY TO R329 3J DELTA DELAY TO R330 2J VW S R938 7 5K 1C CH 1 PRB FROM Clll R105 CH 2 PRB FROM C121 R106 7C 1 CH 3 PRB FROM C131 R107 BC CH 4 PRB FROM C151 R108 U 5 06 CD4051 h 3C fVOLT CAI FROM U3 2C VOLT CAI FROM U3 VOLT CAI l FROM U3 r n l rtrtr Ln c rUa C H 3 P O S m C H 3 P O S T O C 238 U203 10 7 B C H 4 P O S it nftee C H 4 P O S T O C 24B U203 12 8 B HOL...

Page 365: ...L 5G 9L 5G 10L 50 10K 5G 10L 4H 10L 5J 10L 5J 8M 6J 8L 0H 8L 7J 7N 6J 8M 6K 9M 6L 9L 0L 10M 7F 7M 3L 7N 3L 8N 4L 0N 5L 6N 5L 6N 5L 8N 7E 7L 5F 6M 2E 9C 1H 7B 2H 7B 3H 9B 5B 7L 0B 7L 5B 7L 7B 2M 7G 6M 3M 7K 8A 7K 8M 7K 8A 7K 5D 3L 7D 4K 8J 6J 3A 10D 4A 10D 7E 5K SCHEM BOARD LOCATION LOCATION 1M CHASSIS ...

Page 366: ...M CM a r w p a N m Figure 9 10 A16 Processor board U 2 5 1 4 t s i 9 6 9 0 h _ J U 2521 1 2506 e M S jinlnimi IC M b J C M w U 2 5 1 9 a s a a W R 2 5 6 5 1 2309 a e iA A 0 i 82522 t j I s 1 1 S O 260 g a 0 o a U 2 3 0 8 0 i 1 j _ _ j s U 2 5 2 4 f r 02511 3 1 1 f t 05 01 U 2 5 2 5 i i u5 j S IS U 2 5 2 3 S S SlgWcc m ctriei r to dism W Jim ft e C O C O C m C M C M Jnrvams 8 8 8 81 8 8 in in in in...

Page 367: ...ents have no Assembly Number prefix see end of Replaceable Electrical Parts List Aft CM 5 inL O Il0 CM C ll M 2 m CM CM into X CM CM W oc r rcult board U2523 U2525 U2308 cn _ in CMc m H c m CDCM CMM CMCM inctlin co in 52m co in co in cm W i n im jn m m in cmr i j _ cm oc w qo r to O f C O 0 C Ocoil CM O 00 C T C M M CO OO CO CO CO CO CO CO CO CM CM CM CM CMCW CM CM CM CM CM CM t OC Qd OC oc O f Of...

Page 368: ... 14 C2552 8 R2322 11 R2501 8 U2303 11 U2503 14 C2322 11 C2553 8 R2324 11 R2502 8 U2303 14 U2506 8 C2323 11 C2554 8 R2325 11 R2503 8 U2304 11 U2506 14 C2324 11 C2555 8 R2328 11 R2504 8 U2304 14 U2512 8 C2401 14 R2329 11 R2505 8 U2305 11 U2512 14 C2402 14 CR2501 8 R2330 11 R2506 8 U2305 14 U2513 8 C2403 14 CR2502 8 R2331 11 R2507 8 U2306 11 U2513 14 C2404 14 CR2504 8 R2332 11 R2508 8 U2306 14 U2514 ...

Page 369: ...LOCATION 3J 3J 7K 4G 4H 5K 5K 5F 7C 6H 3D 5K 8 J 8C 4H 4G 5F 6G CIRCUIT NUMBER R2516 R2517 R2518 R2519 R2520 R2521 R2522 R2523 R2524 R2526 R2527 R2545 R2554 R2555 R2560 R2561 R2562 R2563 R2564 R2565 SCHEM LOCATION 7D 8F 8F 6J 5H 5E 3H 7A 8B 7D 7D 5J 2B IB 3M 3M 3M 4M 5M 6B BOARD LOCATION 6G 6K 6K 6K 4J 5J 6J 6K 6K 6F 6G 7K 2A 4G 4F 4F 4F 4F 4K 6G CIRCUIT NUMBER U2501 U2502 U2503A U2503B U2503C U25...

Page 370: ... 3EN2 R2512 4 7K U 2 5 0 3 D 74LS32 67 66 65 51 57 U 2 5 0 6 D U 2 5 0 3 A 74LS32 ia l V i X 74LS32 SAD1 AD2 7 ft S AD3 6 S AD4 5 AD5 4 S AD6 3 AD7 2 19 X R2507 100 W V Q 2 5 0 7 U 2 5 0 6 B 74LS00 LED CATH CLK TO R2529 4A J LED ANODE CLK TO R2528 2A 0 RO BUKljfi TO U2401 11 U2417 3 30 620 a T H 1 W V RO BUF RD TO U2402 1 6A 9 POWER ON RESET A16 PROCESSOR BOARD I R2518 V s CR2504 1K DS2501 S 620 U...

Page 371: ...SCHEM BOARD 1 LOCATION LOCATION 1C 6G 7A 6K 2F 4H 2D 4H 8G 4H 1 IF 4H 7D 5K 7D 5K 7B 5K I 2E 5K 3J 4F j 3G 4J 2G 5H IE 4H 4L 5F i 5L 4K 6L 6J 7J 5J 6B 6H i i I I ...

Page 372: ...2246 1Y and 2246 Mod A Service WAVEFORMS FOR DIAGRAM 9 MORE ...

Page 373: ... 6555 72 6557 88 ...

Page 374: ...2400 2C 3C U2413 3J 5C C2418 2J IB R2408 3K 6C U2401 4B 5F U2414 4L 6D C2419 2J IB R2409 3K 6C U2402 6B 5F U2415 3L 6C C2420 2K IB R2410 5M 7C U2403 1G 1C U2416A 5L 7D R2411 3M 7C U2404 5E 4B U2416B 3L 7D J2302 3M 8B R2413 5J 5E U2405 6F 3B U2416C 3M 7D J2502 1A 3J R2414 6J 5E U2406 5G 4C U2416D 5M 7D J2502 1M 3J R2415 4J 5D U2407A 4F 5E U2417A IB 1A R2416 4J 6C U2407B 3F 5E U2417B 1C 1A R2400 2B ...

Page 375: ......

Page 376: ...SCHEM LOCATION BOARD LOCATION 2E 2B 7F 4B 4J 5D 3J 5C 4L 6D 3L 6C 5L 7D 3L 7D 3M 7D 5M 7D IB 1A 1C 1A 2B 1A 3B 1A ...

Page 377: ...g DS2008 o S2043 DS2023 S20II in CM S203I 8 R DS204I S2030 o S DS2042 S g DS2026 DS2034 DS2027 DS2035 DS2043 DS2028 DS2036 DS2044 DS2029 DS2037 DS2043 DS2030 DS2038 DS2046 DS203I DS2039 DS2047 CM O s a ro S11I6 o o CM S2047 S2048 S20I4 S20I5 S20t5 DS2032 DS2048 S20I3 S2045 6081 37 7062 11 Figure 9 11 A14 Switch board Static Sensitive Devices See Maintenance Section COMPONENT NUMBER EXAMPLE Compone...

Page 378: ...1 10 DS2033 10 S2006 10 S2040 10 DS2002 10 DS2034 10 S2007 10 S2041 10 DS2003 10 DS2035 10 S2008 10 S2042 10 DS2004 10 DS2036 10 S2009 10 S2043 10 DS2005 10 DS2037 10 S2010 10 S2045 10 DS2006 10 DS2038 10 S2011 10 S2046 10 DS2007 10 DS2039 10 S2013 10 S2047 10 DS2008 10 DS2041 10 S2014 10 S2048 10 DS2009 10 DS2042 10 S2015 10 DS2010 10 DS2043 10 S2016 10 U2001 10 DS2011 10 DS2044 10 S2017 10 U2001...

Page 379: ...38 10 S2011 DS2007 10 DS2039 10 S2013 DS2008 10 DS2041 10 S2014 DS2009 10 DS2042 10 S2015 DS2010 10 DS2043 10 S2016 DS2011 10 DS2044 10 S2017 DS2012 10 DS2045 10 S2018 DS2013 10 DS2046 10 S2019 DS2014 10 DS2047 10 S2020 DS2015 10 DS2048 10 S2021 DS2020 10 S2022 DS2021 10 P2501 10 S2024 DS2022 10 P2501 14 S2028 SCHEM NUMBER CIRCUIT NUMBER SCHEM NUMBER 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10...

Page 380: ...WAVEFORMS FOR DIAGRAM 10 ...

Page 381: ... 3F 4E 2F 2F 2F 3F 3F 3F 3F 2F 2F 2F 3F 3F 3F 3F 4F IB IB CIRCUIT NUMBER R2001 R2002 52001 52002 52003 52004 52005 52006 52007 52008 52009 52010 52011 52013 52014 52015 52016 52017 52018 52019 52020 52021 52022 SCHEM LOCATION 7L 4L 8J 8J 7J 7J 7J 6J 6J 6J 5J 5J 4J 4J 3J 3J 3J 8H 8 H 7H 7H 7H 6H BOARD LOCATION 4B 3E 1A 2A 3A 4A 3A IB 4B 3C 4C 1C 4D 4E 4F 4F 4F 1A 2A 3A 4A 3B IB CIRCUIT NUMBER S2024...

Page 382: ...S2047 y L Vi A16 PROCESSOR BOARO I 5 V Q iv A B SELECT r DS2034 VERT TRIGGER SOURCE DS2035 I TRIGGER SOURCE DSa036 y 1E3 DS2037 I l t y I I 0Sa039 y TRIGGER SLOPE A AUTO LEVEL B AUTO LEVEL r A AUTO B RUNS AFTER TRIGGER MODE VERTICAL MODE A TV LIN E B TV LINE FROM A SOURCE TRIGGER MODE TRIGGER I MODE d Q C H 4 V0LTS Divj N nasoi DS2032 y 5V 0 ivl CHOP Q ALT VERTICAL MODE AC GND CH 1 COUPLINGj D C G...

Page 383: ... 3 8G IB 4 8G 2A 5 8G 3A B 7G 4B 7 7G 3B B 6G 1C B 6G 4C 0 6G 3C 1 5G 4C 2 5G ID 3 5G 3D 5 4G 4F B 3G 3F 7 3G 3F B 3G 3F 1 2M 2B 2 5M 4B 1 1M IB M 2N IB III R SCHEM LOCATION BOARD LOCATION 7 4C 7J B 4C 7J B 5B 7J 0 6B 7J 1 7B 7J 2 7B 7K 3 8B 8J 3 1A 7H 4 3A 6J 5 3B 7J ...

Page 384: ... R2II2 R2I02 R2I04 C Q C Q W i C O C O y r T C M C V i C M C N J cc C C cc C C 3 R2I0I R2I03 R2I07 4 R2I05 R2I08 noni ri ns s Figure 9 12 A12 Potentiometer board llilh UniHiv thill C O M P O N IN t N U M H M I tX A M N I I mm fnntm nl N nm bei A PU J4 IO 4 H H f I I 1 ...

Page 385: ...D CIRCUIT SCHEM CIRCUIT SCHEM CIRCUIT SCHEM NUMBER NUMBER NUMBER NUMBER NUMBER NUMBER J2105 11 R2104 11 R2110 11 J2105 14 R2105 11 R2111 11 R2106 11 R2112 11 R2101 11 R2107 11 R2113 11 R2102 11 R2108 11 R2103 11 R2109 11 2 5 ...

Page 386: ...SCHEM CIRCUIT SCHEM CIRCUIT SCHEM NUMBER NUMBER NUMBER NUMBER NUMBER NUMBER J2105 11 R2104 11 R2110 11 J2105 14 R2105 11 R2111 11 R2106 11 R2112 11 R2101 11 R2107 11 R2113 11 R2102 11 R2108 11 R2103 11 R2109 11 A12 POTENTIOMETER BOARD ...

Page 387: ...WAVEFORMS FOR DIAGRAM 11 6555 73 6557 48 ...

Page 388: ... 1M P2105 4B R2301 3H R2302 3H 7B 7C 7B 7B 7B 7B 7A 7A 7A 7B 7C 7D 7D 7D 7A 8B 8E 2A 2A 8G 7A 7A R2303 2J R2304 3L R2305 4L R2306 6K R2307 5K R2308 5K R2310 2C R2311 6F R2312 6F R2313 7E R2314 7E R2315 7F R2316 7F R2317 7E R2318 7E R2319 IK R2320 1J R2321 1J R2322 1J R2324 1C R2325 4E R2328 2F R2329 2F R2330 2G R2331 2G 6C 7A 7B 7C 7C 7C 2A 7F 7E 7E 7E 7E 7E 7E 7E 4A 3A 5A 5A 5B 8G 6A 6A 6A 6A R23...

Page 389: ... D1 8 V D2 14 S D3 7 S D4 17 SD5 4 S D6 18 D 7 3 1 CIRCUIT NUMBER 7 5V 5V GND 7 5 V 15V U2300 20 10 U2301 20 10 U2302 20 13 17 U2303 16 8 7 U2304 4 11 U230S 4 11 U2306 8 1 4 U2307 20 10 U2308 16 8 7 U2309 16 8 7 U2310 16 8 7 U2311 16 8 7 U2312 16 8 7 U2313 20 10 U2314 7 4 S t a t i c S e n s i t i v e D e v i c e s See M a in te n a n ce S ection A12 FOR INTEGRATED CIRCUIT SUPPLY CONNECTIONS AND P...

Page 390: ...OARD LOCATION LOCATION 3B 2D 5A IF 4B 2D 4A 2E SCHEM LOCATION BOARD LOCATION 6K 7F 7L 7F 6K 7F 7L 8E 2D 5B IE 5B 3J 6B IK 7A 4L 7B 2M 7B 3L 7B 3L 7B 5M 7B 4M 7B 3M 7B 2L 7B 5K 7C 5J 7G 6J 7G 3G 6E 2J 7B 5B 8G ...

Page 391: ...C2206 R2293 R2274 VR2207 02214 I22R 82243 R225B R2273 C22I0 R2254 CR2227 R2242 CR2238 J R223I K T2205 L2206 C2244 R2276 C2203 C2248 C2245 TP2203 P2204 C222I C2223 C2243 VR2203 8 C M ct S2202 02201 s s O TP2204 C2225 C2229 c 2 2 io rj 5 L2 203 4 IV V T2208 F ig u re 9 1 3 A l l P o w a r S u p p ly b o a rd T2204 I R2266 R2267 DS220I R2259 o L220I 6 8 8 i S S S S l a s s s 158 5 C MO C O 3C MC MC M...

Page 392: ...C2244 C2243 m p R2266 R226 DS220I R2259 C2221 cuts L Z01 n CR2220 CR2207 CR2206 O R 22 9 CR22I5 CR2208 CR2213 CR2209 CR221I CR22J2 CR22IO CR22I4 CR22I6 C2229 C2228 C2226 11 1104 0 2 2 2 2 C2224 C22 7 ro S C2230 O c C2233 1 cites L2202 C2234 o 2232 L2205 V L2204 L2203 R2257 U2230 ftupply board C2236 7062 12 4 ...

Page 393: ...9 12 CR2235 12 R2216 12 R2275 12 C2221 12 CR2236 12 R2218 12 R2276 12 C2222 12 CR2237 12 R2219 12 C2223 12 R2220 12 RT2201 12 C2224 12 DS2201 12 R2221 12 C2225 12 R2222 12 S2201 12 C2226 12 F2201 12 R2223 12 S2202 12 C2227 12 R2224 12 C2228 12 J2208 12 R2225 12 T2203 12 C2229 12 J2225 12 R2226 12 T2204 12 C2230 12 R2227 12 T2205 12 C2232 12 L2201 12 R2228 12 T2206 12 C2233 12 L2202 12 R2229 12 C22...

Page 394: ...WAVEFORMS FOR DIAGRAM 12 2246 1Y and 2246 Mod A Service i f I S 1 f c i 4 i ...

Page 395: ...WAVEFORMS FOR DIAGRAM 12 cont 2246 1Y and 2246 Mod A Service ...

Page 396: ...0 3E 1C RT2201 1A IB C2224 3M 4G DS2201 8M 2K R2221 2E 1C C2225 5M 5F R2222 2E 1C S2201 1C 4B C2226 5M 4H F2201 2A 2A R2223 3D 1C S2202 2E 4E C2227 5M 4F R2224 6F ID C2228 5M 4H J2208 7M 2K R2225 6F ID T2203 2H 5C C2229 4M 4F J2225 6M 5H R2226 2A 2B T2204 2K 2H C2230 4M 4H R2227 IB 4A T2205 6K 1H C2232 3M 4J L2201 2M 3G R2228 2B 2B T2206 1C 5E C2233 4M 4J L2202 3M 5G R2229 1C 4C C2234 5L 5G L2203 ...

Page 397: ......

Page 398: ......

Page 399: ... 2C 4H R2783 4D 7N C245 7C ID Cl 108 7J 4G W103 1G 3D C249 7D 2D C l 158 IF 5L U112 7D 6C W235 7E 5E C265 5B 5F Cl 159 2G 5L U122 7D 4C W501 1H 1M C282 3B 4F C l 160 6K 5K U171 5A 3B W606 IE IK C283 6B 6G C2701 6H 7M U172 6A 3B W607 2E 5M C297 3C 5F C2702 8G 6L U173 1A 3C W900 5M 9B C298 3B 3F C2709 4E 7M U201 IB 5H W1104 6H 3J C304 5D 7D U202 IB 5G W1105 8H 4J C309 2J 7H J1204 1A 5J U203 3J 10G W...

Page 400: ...REV JUNE 1991 7062 39 ...

Page 401: ......

Page 402: ...101 7H 2M C229 7B 3D Cl 006 7F 8L R1159 3M 2J U1102 7H 1L C234 7C 2D Cl 101 6G 1M R2783 4D 7N U1103 1L 2K C235 7C 2D Cl 102 8G 2M U1104 2L 2M C239 7C 2D Cl 158 1L 2K U112 7D 6C U1106 2M 2J C244 7D ID Cl 159 3M 2J U122 7D 4C C245 7C ID C2701 5H 7L U171 5A 3B W103 6A 6D C249 7D ID C2702 8G 6L U172 6A 3B W235 7E 5D C265 5B 5F C2709 4E 7M U173 1A 3C W900 5M 9B C282 3B 4F U201 IB 5H W1103 2L IK C283 6B...

Page 403: ......

Page 404: ......

Page 405: ...C2504 2C 5G U2301 IE 5B U2412 6G 5D C2312 1C 5B C2505 2C 5K U2302 1H 6B U2413 7G 5C C2313 1C 6B C2506 2C 5H U2303 6G 7A U2414 6H 6D C2314 6B 8A C2507 2C 4G U2304 6C 7B U2415 7H 6C C2315 7B 7B C2508 2C 4G U2305 7C 7B U2416 7C 7D C2316 1J 7B C2509 2C 6F U2306 6E 7C U2417 IF 1A C2317 6G 7C C2510 2C 6J U2308 6F 7G U2501 1C 6G C2319 1C 6F C2511 2C 4H U2309 7F 7G U2502 1G 6K C2321 1C 6F C2530 2C 6H U231...

Page 406: ...B 2246 IV AND 2246 MOD A ...

Page 407: ......

Page 408: ......

Page 409: ...1 STEP BALANCE R920 VOLTS CAL TEST POINT R921 PIN 6 R231 CH 3 GAIN R241 CH 4 GAIN R275 C274 C273 R272 R273 R455 B TRIG BANDWIDTH 2246 1Y and 2246 Mod A Service R260 READOUT VERTICAL CENTERING R211 C314 CH 1 A 20 nS GAIN TIMING R826 HORIZ IX GAIN TIMING R823 READOUT HORIZ GAIN R827 X GAIN R703 VERTICAL OUTPUT GAIN R825 HORIZ X10 GAIN TIMING R724 READOUT JITTER 6555 48 7062 13 J1204 POWER SUPPLY TES...

Page 410: ...lon Because of space limitations an Item Name may sometimes appear as incomplete For fur ther Item Name identification the U S Federal Cataloging Handbook H6 1 can be utilized where possible FIGURE AND INDEX NUMBERS Items in this section are referenced by figure and index numbers to the illustrations INDENTATION SYSTEM This mechanical parts list is indented to indicate item re lationships Followin...

Page 411: ... ELECTRIC 15 F 1 FU SHING N ROAD TAIPEI TAIWAN ROC 0JRZ2 BADGLEY MFG CO 1620 NE ARGYLE PORTLAND OR 97211 0JR05 TRIQUEST CORP 3000 LEWIS AND CLARK HWY VANCOUVER WA 98661 2999 0J260 COMTEK MANUFACTURING OF OREGON METALS PO BOX 4200 BEAVERTON OR 97076 4200 0J9P9 GEROME MFG CO INC PO BOX 737 NEWBERG OR 97132 0KBZ5 MORELLIS Q D PLASTICS 1812 16TH AVE FOREST GROVE OR 97116 0KB01 STAUFFER SUPPLY 810 SE S...

Page 412: ...R Mfr Code Manufacturer Address City State Zip Code 8189 ILLINOIS TOOL WORKS INC SHAKEPROOF DIV ST CHARLES ROAD ELGIN IL 60120 80009 TEKTRONIX INC 14150 SW KARL BRAUN DR PO BOX 500 BEAVERTON OR 97077 0001 83014 HARTWELL CORP LOCKWELL DIVISION 950 S RICHFIELD RD PLACENTIA CA 92670 6732 REV OCT 1991 10 3 ...

Page 413: ...ALUMINUM 80009 390105701 8 348 0659 00 2 FOOT CABINET BLACK POLYURETHANE 0JR05 ORDER BY DESC 9 348 0764 04 1 SHLD GSKT ELEK 0 125 X 0 188 WIRE MESH 2 LAYERS 37 0 L 18565 ORDER BY DESC 10 200 3660 00 1 COVER AUTO CALPOLYCARBONATE TK1163 ORDER BY DESC 12 200 3233 02 1 COVER REAR PLASTIC W LABELS 80009 200323302 ATTACHING PARTS 13 211 0691 00 B100100 B114168 4 SCREW MACHINE 6 32 X 0 625 PNH STL 2246 ...

Page 414: ... _ 5 ...

Page 415: ...2246 1Y 2246 MOD A ...

Page 416: ......

Page 417: ...9P9 ORDER BY DESC 17 348 1015 00 B100100 B110537 1 GASKET CRT SHLD CU BE 2246 MOD A 2Y 80009 348101500 348 1130 00 B110538 1 SHLD GSKT ELEK EMI SST 2246 MOD A 2Y TK1326 ORDER BY DESC 348 1015 00 B700100 B710264 1 GASKET CRT SHLD CU BE 2246 1Y 80009 348101500 348 1130 00 B710265 1 SHLD GSKT ELEK EMI SST 2246 1Y TK1326 ORDER BY DESC 18 19 348 0532 00 2 1 GROMMET PLASTIC BLACK ROUND 0 625 ID FILTER R...

Page 418: ... 337 3487 00 B711093 1 SHIELD ELEC CRT STL 2246 1Y 0J9P9 337 3487 00 33 386 4443 00 1 SUPPORT SHIELD CRT FRONT PLASTIC 80009 386444300 34 334 1951 00 1 MARKER IDENT MKD WARNING CRT VOLTAGES TK0860 ORDER BY DESC 35 36 334 1379 00 1 1 MARKER IDENTMKD HI VACUUM DELAY LINE SEE DL21 REPL 07416 ORDER BY DESC 37 343 0549 00 2 STRARTIEDOWN E 0 098 W X 4 0 L ZYTEL TK1499 HW 047 i i S 441 1720 00 1 1 CHAS P...

Page 419: ...PNH STL 0KB01 ORDER BY DESC 2246 1Y 213 0942 00 B711095 2 SCREW TPG TR 6 32 X 0 75 TYPE TT PNH STL 0KB01 ORDER BY DESC 2246 1Y END ATTACHING PARTS 352 0863 00 B700100 B715000 2 HOLDER BATTERYPLASTIC 65249 BH500 2246 1Y 15 337 3290 01 B100100 B113293 1 SHIELD ELEC TORW CAUTION LABEL 80009 337329001 2246 MOD A 2Y 337 3681 01 B113294 1 SHIELD ELEC TOP 80009 337368101 2246 MOD A 2Y 337 3290 01 B700100...

Page 420: ... 1 SHIELD ATTEN ALUMINUM 2246 1Y TK1938 ORDER BY DESC 337 3358 02 B711093 1 SHIELD ATTEN FRONT MAIN BD 2246 1Y 0J9P9 ORDER BY DESC ATTACHING PARTS 34 213 0882 00 10 SCREW TPG TR 6 32 X 0 437 TAPTITE PNH STL 0KB01 ORDER BY DESC END ATTACHING PARTS 35 344 0286 00 6 CLIRELECTRICALFUSE SPR BRS 75915 102074 35 1 337 0896 00 B110100 1 PLATE ELEC SHLD B SWEEP CKT BD 2246 MOD A 2Y 0J260 ORDER BY DESC 337 ...

Page 421: ...ALLOY 2246 1Y TK2147 ORDER BY DESC 131 4521 00 B710253 2 CONTACT ELEClINPUT BNC GROUNDING CU BE ALLO Y 2246 1Y TK1326 ORDER BY DESC 44 214 3136 00 2 HEAT SINK XSTR TO 5 ALUMINUM 13103 2228B 358 0715 00 2 BUSHING SNAP 0 25 ID X 0 234 THK NYLON 0 375 OD 28520 2810 45 46 384 1702 00 1 1 EXTENSION SHAFT9 97 L X 0 25 POLYMIDE CIRCUIT BD ASSYCRT CONTROL SEE A8 TK1908 PER TEK DRAWING REPL 47 358 0715 00 ...

Page 422: ...Replaceable Mechanical Parts 2246 1Y and 2246 MOD A Service Index Tektronix Serial No Mfr No Part No Effective Dscont Qty 12345 Name Description Code Fig Mfr Part No 10 10 REV OCT 1991 ...

Page 423: ...2246 1Y 2246 MOD A ...

Page 424: ...2246 1Y 2246 MOD A ...

Page 425: ......

Page 426: ...A TO CA U W 0 25 OD CABLES 0JR05 ORDER BY DESC 020 0862 00 1 COMPONENT KITNORTH AMERICAN 80009 020086200 6 161 0104 08 1 CABLE ASSY PWR 3 18 AWG 240V 98 0 L OPTION A4 NORTH AMERICAN 70903 ORDER BY DESC 343 0170 00 1 RTNR CA TO CA U W 0 25 OD CABLES 0JR05 ORDER BY DESC 020 0863 00 1 COMPONENT KIT SWISS 80009 020086300 7 161 0167 00 1 CABLE ASSY PWR 3 0 X 0 75 6A 240V 2 5M L OPTION A5 SWITZERLAND S3...

Page 427: ...Replaceable Mechanical Parts 2246 1Y and 2246 MOD A Service Index Tektronix Serial No Mfr No Part No Effective Dscont Qty 12345 Name Description Code Mfr Part No Fig 10 12 REV OCT 1991 ...

Page 428: ...to printing and shipping requirements we can t get these changes immediately into printed manuals Hence your manual may contain new change information on following pages A single change may affect several sections Since the change information sheets are carried in the manual until all changes are permanently entered some duplication may occur If no such change pages appear following this page your...

Page 429: ...ualPart Number 070 7062 00 EFFECTIVE SERIAL NUMBER B715003 1Y 2R B120200 MOD A 2Y 9X REPLACEABLE ELECTRICAL PARTS LIST CHANGES CHANGE TO RES FXD FILM 75 OHM 5 0 2W RES FXD FILM 75 OHM 5 0 2W DIAGRAM CHANGES DIAGRAM o VERTICAL INPUTS A10R113 313 1750 00 A10R123 313 1750 00 Change the value of resistor R113 location 1G to 75 ft Change the value of resistor R123 location 3G to 75 ft Page 1 of 1 ...

Page 430: ... 2Y 9X Tfektronix manual change information committed to excellence Date 5 15 91 Change Reference M74238_______ Product 2246 1Y 2246 MOD A SERVICE MANUAL_____________ ManualPartNumber 070 7062 00 REPLACEABLE ELECTRICAL PARTS LIST CHANGES CHANGE TO A18L2206 108 1501 00 INDUCTOR FIXED 100UH 10 1 8A DIAGRAM POWER SUPPLY Change L2206 location 6K to 100p H Page 1 of 1 ...

Page 431: ... t o excellence Date 9 23 91 Product 2246ModA 1Y SERVICE Chanae Reference C l 1 0991 Manual Part Number 070 7062 00 DESCRIPTION Product Group 46 EFFECTIVE ALL SERIAL NUMBERS TEXT CHANGES Page 4 2 5 Step 2e DC Volts Normal Mode Rejection Ratio Change spec to 0 018V ...

Page 432: ... component number is J1204 The correct warning statement is given below A R N IN Potentially dangerous voltages exist at several points throughout this instrument If it is operated with the cabinet removed do not touch exposed connections or components Before replacing parts or cleaning disconnect the ac power source from the instrument and check that the line rectifier filter capacitors have disc...

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