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LeCroy Waverunner2 LT262 Series, Service Manual

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LeCroy Waverunner2 LT262 Series Service Manual Download Page 35

 

 

4.2.8 Time Base

 

 

 

Introduction 

 

 

 

 

The time base includes three circuits: 

 

•

 

MCG426

:   generates sampling clocks: 12.5 MHz up to 2GHz 

   

       generates clocks for the MTB411 

      

 

interleaves sampling clocks to increase sampling rate and memory     

     

 

depth. 

 

 

 

 

•

 

MTB411A

:  Time Base System  

   

     

TDC interpolator and Real Time computation  

 

 

     

Trigger circuitry 

 

 

  

Frequency divider 

 

•

 

MST429A

:

 

Single source trigger, Standard trigger, Hold off, Pulse width & interval   

   

      Multiple source trigger, State qualified, Edge qualified 

 

  Block 

Diagram 

 

MTB 411

MST 429

MCG 426

HSH & ADC

SHCK_A

SHCK_B

SHCK_C

SHCK_D

2

2

2

2

MCK

TRIG

TRIG

2

 Peak
Detect
   MPD

 10 MHz
Reference

INTREF

PHDET

VCO

VCO2G

PDCK

2

2

2

RAMPST

R
A
M
PS

TRT

TRT
to trigger selection

SHCK_A

SHCK_B

SHCK_C

SHCK_D

Q

Q

D

ENABLE

TRIGEN

ITBUSY

MACQ

FDEND

FDCK

TR
IG
D

IT
C
K

TRIGD

ITCK

FDCK

FDEND

MACQ

INT

2

TBCK

TSCK

TSCK

TBCK

BCK

_ITMB
to uP

MEMORY

MCK

DIN[7..0]

EXTREF

EXTCK

EXTREF

EXTCK

2

RT
C
K

RTCK

S2EDGE

Vcc

MCLR

CLR

EN10MHZ

10MHZ

clock 10MHz

500MHZ

clock 500MHz

CONTROL
from uP

DIO(7:0) +

  A(1:0) +
  control

    enable
clock 10MHz

 

Time Base Block Diagram

 

 
 
 
 

Theory of Operation   

4-17

 

Summary of Contents for Waverunner2 LT262 Series

Page 1: ...LTXXX2 SM E LeCroy Waverunner2 Series Service Manual Version D December 2003 ...

Page 2: ...e NY 10977 6499 USA Tel 845 425 2000 Fax 845 425 8967 http www lecroy com Copyright October 2001 LeCroy is a registered trade mark of LeCroy Corporation All rights reserved Information in this publication supersedes all earlier versions Specifications subject to change ...

Page 3: ...to have been caused by misuse neglect or accident or by abnormal conditions or operation 1 2 Product Assistance Help on installation calibration and the use of LeCroy equipment is available from the LeCroy Customer Service Center in your country Note This warranty replaces all other warranties expressed or implied including but not limited to any implied warranty of merchantability fitness or adeq...

Page 4: ...1 6 How to return a Product Contact the nearest LeCroy Service Center or office to find out where to return the product All returned products should be identified by model and serial number You should describe the defect or failure and provide your name and contact number In the case of a product returned to the factory a Return Authorization Number RAN should be used Return shipments should be ma...

Page 5: ...6th floor 1 6 2 Chome Sasazuka Shibuya ku Tokyo Japan 151 0073 tel 81 3 3376 9400 2 2 Installation for Safe and Efficient Operation Operating Environment For safe operation of the instrument to its specifications ensure that the operating environment is maintained within the following parameters Temperature 5 to 40 C 41 to 104 F rated Humidity Maximum relative humidity 80 RH non condensing for tem...

Page 6: ...See elsewhere in this manual wherever the symbol is present CAUTION Risk of electric shock On Supply Standby Supply Earth Ground Terminal Alternating Current Only Chassis Terminal Earth Ground Terminal on BNC Connectors WARNING Denotes a hazard If a WARNING is indicated on the instrument do not proceed until its conditions are understood and met WARNING Any use of this instrument in a manner not s...

Page 7: ... of the current carrying conductors neutral conductor at ground earth potential Maintain the ground line to avoid an electric shock None of the current carrying conductors may exceed 250 V rms with respect to ground potential The oscilloscope is provided with a three wire electrical cord containing a three terminal polarized plug for mains voltage and safety ground connection The plug s ground ter...

Page 8: ...utton located near the left hand corner of the instrument below the screen After the instrument is switched on auto calibration is performed and a test of the disk drive analyzer s ADCs and memories is carried out The full testing procedure takes approximately 10 seconds after which time a display will appear on the screen ...

Page 9: ...ut 50 Ω 5 Vrms 1 MΩ 400 V max peak AC 5 kHz DC Vertical Resolution 8 bits up to 11 bits with enhanced resolution ERES Sensitivity 50 Ω or 1 MΩ 2 mv 10V div fully variable Offset Range 2 mV 99 mV div 1 V 100 mV 0 99 mV div 10 V 1 V 10 V div 100 V Isolation Channel to channel 250 1 at same V div settings 3 3 Timebase System Timebases Main and up to four zoom traces simultaneously Time Div Range LT37...

Page 10: ... 250k 1M 4M NA 100k 1M NA 250k 1M 4M 3 5 Acquisition Modes Random Interleaved Sampling RIS 50 GS s for repetitive signals 500 ps div 1 µs Single Shot For transient and repetitive signals 1ns div 1000s div Sequence Mode LT262 264 2 400 segments LT584 354 372 374 2 1000 segments Memory Option M or L 2 400 segments Intersegment Time 50 µsec max 3 6 Acquisition Processing Averaging Summed averaging to...

Page 11: ...Frequency Up to 500 MHz 350 MHz on LT264 262 External Trigger Input Range 0 5 V 5 V with Ext 10 Max external input 50Ω 5 V DC or 5Vrms Max external input 1MΩ 400 Vmax DC peak AC 5 kHz 3 8 Automatic Setup Auto Setup Automatically sets timebase trigger and sensitivity to display a wide range of repetitive signals Vertical Find Automatically sets the vertical sensitivity and offset for the selected c...

Page 12: ...h automatic waveform overlap management 3 11 Analog Persistence Display Analog Persistence and Color Graded Persistence Variable saturation levels stores each trace s persistence data in memory Trace Selection Activate Analog Persistence on a selected trace top 2 traces or all traces Persistence Aging Time Select from 500 ms to infinite Trace Display Opaque or transparent overlap Sweeps Displayed ...

Page 13: ... Port Standard 15 pin D Type VGA compatible Centronics Port Parallel printer interface Internal graphics printer optional Provides hardcopy output in 10 seconds 3 17 Outputs Calibrator signal 500 Hz 1 MHz square wave or DC level Select from 1 0 to 1 0 into 1MΩ output on front panel test point and ground lug Control signals Rear panel TTL level BNC output Choice of trigger ready trigger out or Pass...

Page 14: ...ration Three years calibration recommended yearly 3 20 Physical Dimensions Dimensions HWD 210 mm x 350 mm x 300 mm 8 3 x 13 8 x 11 8 height excludes scope feet Weight 8 kg 18 lbs Shipping Weight 12kg 27 lbs 3 21 Math Tools Standard Simultaneously perform up to four math signal processing functions traces can be chained together to perform math on math average summed to 4000 sweeps product Average ...

Page 15: ...aveform to memory GPIB SRQ or pulse out 3 24 Options Extended math and Measurement Adds math and advanced measurements for all general purpose applications Includes all standard math and measurement tools plus the following tools 3 25 Extended math tools Automated measurements Display any five parameters together with their average high low and standard deviations absolute value integrate differen...

Page 16: ...er density real and imaginary FFT on all acquisition points up to 25 Mpts With Waveanalyzer FFT you get maximum resolution at wide frequency spans 3 30 Other Application Solutions Available Jitter and Timing Analysis JTA Digital Filter Package DFP PowerMeasure Analysis PMA1 Communications Mask Testing MT01 MT02 Polymask Mask Testing PMSK Advanced Optical Recording Measurements AORM for LT37X scope...

Page 17: ... for dV dt and slope Select edge limits between 2 5ns and 20s Runt Positive or negative runts defined by two voltage limits and two time limits selectable between 2 5 ns and 20 ns 3 35 Hardcopy Print Screen is activated by a front panel button or via remote control Store screen image files or print to external printers including network printers and directories Netwrok printing and file access req...

Page 18: ...n Included with all WavePro Oscilloscopes Operations Manual hard copy Remote Programming Manual hard copy CD ROM PDF formatted manuals plus software utilities including ScopeExplorer ActiveDSO MaskMaker DSO Filter and DSO Net Print Gateway ...

Page 19: ...lock which incorporates all peripherals and other interfaces for outer connections These two circuit blocks are connected through MC68150 dynamic bus sizer Power Supply The board requires two power sources Vcc and 12V 12V source is used for OP amps and small peripheral operation The processor requires 3 3V and 2 5V and some other logic devices are operated by the 5V source All of the signals are T...

Page 20: ...Super I O MAIN Board I F VGA 65545 BUS Sizer RS232C Parallel Floppy 32bit BUS Flash PROM NVRAM 128KB Real Time Clock Interrupt Controller Front Panel I F GP IB Internal Printer I F Small Peripherals PCMCIA type I II III Other Control Ports 8bit BUS Figure 4 1 CPU Block Diagram ...

Page 21: ...erations of one through four bytes which are chained in a bus cycle Burst Access Timing A burst access on the 603e configured with 32bit device operation performs either two or eight successive reads in SDRAM 2 beat or 8 beat burst access The idea is to put the beginning of an address onto the address bus and read write data out of or to the SDRAM every clock cycle without incrementing the address...

Page 22: ...an 18bit color palette and can display 256 colors out of the available 260 000 The power supply circuit for the liquid crystal panel has a MOSFET switch that switches the power supply of LCD to 3 3V or 5V Also the VGA controller has a switch it switches the max signal level for the LCD to 3 3V or 5V Super I O This device controls RS 232C floppy disk and parallel port operations The controller has ...

Page 23: ...ata and address busses IC65 D F F holds control bits for the signals resetting the card switching between the data area and the attribute area and switching the card s modes All bits in the register are reset to zero when the _RESET signal goes to active low which means that their state is also guaranteed at power up IC66 and the IC67 invert the most significant address bits of the memory card whe...

Page 24: ...l functions Keeps the time of day and current date information while power is off Generates the 32KHz clock for SDRAM refreshing Generates a 128Hz periodic interrupt signal to force bus accessing from the processor and allow periodic updating of the time display Provides a unique ID that identifies the origination of scope ID Feeds the power and the chip select signal to the NVRAM The RTC chip gen...

Page 25: ...is also returned by the expanded board there is no restriction to the amount of wait states The bus clock runs at 16MHz and a reset line reinitializes the boards as does the CPU Four interrupt lines are also included in this interface so that interrupt driven boards can be used Front Panel The front panel is accessed by serial read write signals passing through IC47 and IC48 The CPU board can be r...

Page 26: ...r is generated by pulling the NTEA pin of the CPU down to low This job is done by the BUS IC93 which counts the number of wait states that have already passed through the counter With this operation the system can successfully force the termination of the current cycle Some devices such as the VGA video controller have their own logic to generate a bus error Therefore any access operations for tho...

Page 27: ...itialize memory Decode and Mapping Read Write Burst Read Write Refresh Bus controls is the bus cycle of the entire CPU board Decode all areas other than SDRAM Read Write of 32bits bus Read Write of the bus via bus sizer detection of bus error VGA Supper MAIN SDRAM MUX CPU BUS Select To CPU BUS Select Select Select Ack SD Ack Ack Decoder Buffe Wait Wait Address 8 16bit Select 71059 GP IB 16bit NVRA...

Page 28: ...d without the amplifier HFE428 and HTR420 are Four channels opertion calibration with Software control Input protection clamp thermal detection and coupling AC DC 1MΩ 50Ω Attenuator by 10 by 100 Offset control Offset control of 1V and CAL control of 1 4V Detection of 50Ω over loading Input of signal for calibration The main functions of HFE428 are Amplitude normalization for the ADC system at the ...

Page 29: ...cale and the output is 500 mV differential HAD631 input Range V div Block 2mV 5mV 10mV 20mV 50mV 100mV 200mV 500mV 1V 2V 5V 10V ATT 1 10 1 1 1 1 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 ATT 1 100 1 1 1 1 1 1 1 1 0 1 0 1 0 1 0 1 HFE428 31 25 12 5 6 25 3 125 1 25 6 25 3 125 1 25 6 25 3 125 1 25 0 625 Total ratio 31 25 12 5 6 25 3 125 1 25 0 625 0 3125 0 125 0 0625 0 03125 0 0125 0 00625 Analog control voltage ...

Page 30: ...4 12 Theory of Operation Block diagram 1 HAM631 ...

Page 31: ...HFE428 MFE43 7 FRONT END B HFE428 MFE43 7 FRONT END C HFE428 MFE43 7 FRONT END D HFE428 MFE43 7 5x Digitizer System MAM 633 MAM 633 MAM 633 MAM 633 32 bit Serial Bus MAM Control TDC MSY 443 MAD 442 MAD 442 MAD 442 MAD 442 Digitizer System MAM 633 MAM 633 MAM 633 MAM 633 MAD 442 MAD 442 MAD 442 MAD 442 MSY 443 MSY 443 MSY 443 HAM631 HSY632 32 bit Theory of Operation 4 13 ...

Page 32: ...or Processor Bus System Memory SDRAM Serial Bus MAM Control Digitizer System MAM 633 MAM 633 MAM 633 MAM 633 MAD 442 MAD 442 MAD 442 MAD 442 Digitizer System MAM 633 MAM 633 MAM 633 MAM 633 MAD 442 MAD 442 MAD 442 MAD 442 MSY 443 MSY 443 MSY 443 MSY 443 FRONTEND HFE428 A FRONTEND HFE428 B FRONTEND HFE428 C FRONTEND HFE428 D ...

Page 33: ... HTR420 A B C X HAM631 HAM631 HAM631 HFE428 HAM631 HTR420 A B C X HSY632 MSY443 MSY443 HFE428 HTR420 A B C X HAM631 HAM631 HAM631 2ch mode LT374 HFE428 HAM631 HTR420 A B C X HSY632 MSY443 MSY443 HFE428 HTR420 A B C X HAM631 HAM631 HAM631 HAM631 HAM631 HAM631 HAM631 HFE428 A B C X HFE428 HTR420 A B C X HFE428 A B C X HFE428 HTR420 A B C X LT264 HTR420 HTR420 Theory of Operation 4 15 ...

Page 34: ...st 7 5 Hz LF REJ single pole high pass filter with a cut off frequency at 50 kHz HF REJ single pole low pass filter with a cut off frequency at 50 kHz HF frequency divider by four Analog Controls A sample and hold fed by the precision DAC provides the threshold levels A precision DAC is also used for a successive approximation ADC which measures Probus inputs temperature etc 4 2 7 Analog to Digita...

Page 35: ...r State qualified Edge qualified Block Diagram MTB 411 MST 429 MCG 426 HSH ADC SHCK_A SHCK_B SHCK_C SHCK_D 2 2 2 2 MCK TRIG TRIG 2 Peak Detect MPD 10 MHz Reference INTREF PHDET VCO VCO2G PDCK 2 2 2 RAMPST R A M PS TRT TRT to trigger selection SHCK_A SHCK_B SHCK_C SHCK_D Q Q D ENABLE TRIGEN ITBUSY MACQ FDEND FDCK TR IG D IT C K TRIGD ITCK FDCK FDEND MACQ INT 2 TBCK TSCK TSCK TBCK BCK _ITMB to uP ME...

Page 36: ...n Main Converter for digital circuits Main Converter for analog circuits and output regulators Power Switch A power switch is located on the secondary side In order to switch on and off all of the outputs on the secondary side the control is made by switching on and off the main converter When the power switch is off some power is being fed to some components in the power supply unit stand by mode...

Page 37: ... responsibility to ensure that all laboratory standards used to perform this procedure are operating within their specifications and traceable to required standards if a traceable calibration certificate is to be issued for the Digital Storage Oscilloscope 5 1 1 List of Tested Characteristics This subsection lists the characteristics that are tested in terms of quantifiable performance limits Inpu...

Page 38: ...cy 0 1 Keithley 2000 or equivalent Coaxial Cable 1 ns 50Ω BNC length 20 cm LeCroy 480232001 Coaxial Cable 5 ns 50Ω BNC length 100 cm LeCroy 480020101 2 Attenuators 20 dB 50Ω BNC 1 accuracy LeCroy 402200402 Attenuator 6 dB 50Ω BNC 1 accuracy LeCroy 402600403 Terminator 2 W 50Ω BNC Feed Through LeCroy 402323001 T adapter 50Ω BNC T adapter LeCroy 402222002 Table 5 1 Test Equipment 5 2 1 Test Records ...

Page 39: ...accurate measurements Specifications Test limits DC 1 00 MΩ 1 AC 1 20 MΩ 1 2mV div to 99mV div 1 00 MΩ 1 100mV div to 10V div DC 50Ω 1 5 4 1 Channel Input Impedance a DC 1MΩ Ω Ω Ω Recall xxxP001 PNL or configure the DSO Panel Setups Recall FROM DEFAULT SETUP Channels Trace OFF Channel 1 Channel 2 Channel 3 Channel 4 Input Coupling DC 1MΩ Ω Ω Ω on all 4 Channels Input gain 50 mV div on all 4 Channe...

Page 40: ...its Repeat the above test for all input channels Recall xxxP002 PNL or Set Input gain to 200 mV div on all 4 Channels Repeat the test for all input channels Record the measurements in Table 2 and compare the test results to the limits in the test record b AC 1MΩ Ω Ω Ω Recall xxxP003 PNL or configure the DSO as shown in 5 4 1 a and for each Channel make the following change Input Coupling AC 1MΩ Ω ...

Page 41: ...mits in the test record c DC 50Ω Ω Ω Ω Recall xxxP005 PNL or configure the DSO as shown in 5 4 1 a and for each Channel make the following change Input Coupling DC 50Ω Ω Ω Ω For all input Channels measure the input impedance Record the input impedance in Table 2 and compare it to the limits Recall xxxP006 PNL or set Input gain to 200 mV div on all 4 Channels Repeat the test for all input channels ...

Page 42: ...t DC External DC 1MΩ Ω Ω Ω Time base 50 nsec div Connect the DMM to External and measure the input impedance Record the input impedance in Table 2 and compare it to the limits Recall xxxP008 PNL or set trigger to Ext 10 Measure the input impedance Record the test result in Table 2 and compare the result to the limits in the test record b DC 50Ω Ω Ω Ω ...

Page 43: ...xxxP009 PNL or configure the DSO Select Setup trigger Trigger on EXT External DC 50Ω Ω Ω Ω Connect the DMM to External and measure the input impedance Record the input impedance in Table 2 and compare the result to the limit in the test record ...

Page 44: ... configure the DSO Panel Setups Recall FROM DEFAULT SETUP Channels Trace ON Channel 1 Channel 2 Channel 3 Channel 4 Input Coupling DC 1MΩ Ω Ω Ω on all 4 Channels Input gain 50 mV div on all 4 Channels Trigger mode Auto Time base 10 µ µ µ µsec div Set the DMM to measure Volts and connect it to Channel 1 Measure the voltage and enter it in Table 3 Compare it to the limits Repeat the test for all inp...

Page 45: ...urrent a DC 50Ω Ω Ω Ω Recall xxxP011 PNL or configure the DSO as shown in 5 5 1 and make the following changes Select Setup trigger Set Trigger on EXT External DC 50Ω Ω Ω Ω Connect the DMM to External Measure the voltage and enter it in Table 3 Compare it to the limits ...

Page 46: ...h no signal connected to the inputs Recall xxxP012 PNL or configure the DSO Panel Setups Recall FROM DEFAULT SETUP Channels Trace ON Channel 1 Channel 2 Channel 3 Channel 4 Input Coupling DC 1MΩ Ω Ω Ω on all 4 Channels Input gain 10 mV div on all 4 Channels Trigger setup Edge Trigger on 1 Coupling 1 DC Trigger Mode Auto Time base 20 msec div Channel use 4 Record up to 50 k Samples Press WAVE PILOT...

Page 47: ...c div 50 µ µ µ µsec div and 2 µ µ µ µsec div Record the measurements high sdev of 1 2 3 4 in Table 4 and compare the results to the limits in the test record b AC 1MΩ Ω Ω Ω Recall xxxP013 PNL or configure the DSO as shown in 5 6 1 and for each Channel make the following change Input Coupling AC 1MΩ Ω Ω Ω on all 4 Channels Input gain 5 mV div on all 4 Channels Time base 2 µ µ µ µsec div Press Clear...

Page 48: ...5 12 Performance Verification Rev D Record the four high sdev parameter values in Table 4 and compare the test results to the limits in the test record ...

Page 49: ...hannels Time base 2 µ µ µ µsec div Press Clear Sweeps Measure for at least 50 sweeps then press Stop to halt the acquisition Record the four high sdev parameter values in Table 4 and compare the test results to the limits in the test record Repeat the test for Time base 20 µ µ µ µsec div Record the measurements high sdev of 1 2 3 4 in Table 4 and compare the results to the limits in the test recor...

Page 50: ...lts 8 div x sensitivity volt div Voffset volts setting offset voltage volts Procedure Recall xxxP018 PNL or configure the DSO Panel Setups Recall FROM DEFAULT SETUP Channels Trace ON Channel 1 Channel 2 Channel 3 Channel 4 Input Coupling DC 1MΩ Ω Ω Ω on all 4 Channels Input offset 0 0 mV on all 4 Channels Input gain from 2mV div to 1 V div and 5V div see Table 6 on all 4 Ch Trigger setup Edge Trig...

Page 51: ...v For 50 mv div 100 mV div connect the test equipment as shown in Figure 5 2 For 5V div no attenuator is required connect the test equipment as shown in Figure 5 3 Figure 5 2 DC 1MΩ Ω Ω Ω Accuracy Equipment Setup for 100 mV div Figure 5 3 DC 1MΩ Ω Ω Ω Accuracy Equipment Setup for 5V div For each DSO Volts div set the output of the external DC voltage reference source as shown in Table 5 column PS ...

Page 52: ...ment in Table 5 column Mean For each DC voltage applied to the DSO input repeat parts 1 2 3 and 4 Calculate the Difference by subtracting the DMM voltage reading from the DSO mean voltage reading Record the test result in Table 5 and compare the Difference to the corresponding limit in the test record Repeat step 5 7 Procedure for the other channels substituting channel controls and input connecto...

Page 53: ... Channel 3 Channel 4 Input Coupling DC 1MΩ Ω Ω Ω on all 4 Channels Input gain 5mV div on all 4 Channels Input offset 1 Volt on all 4 Channels Trigger setup Edge Trigger on 1 Coupling 1 DC Mode Auto Time base 2 msec div Channel use 4 Record up to 25 k Channels Trace OFF Channel 1 Channel 2 Channel 3 Channel 4 ANALYSIS CONTROL Trace ON A B C D Select MATH TOOLS For Math Use at most 5000 points Redef...

Page 54: ...ng in Table 6 column DMM 3 Disconnect the DMM from the BNC T connector 4 Press Clear Sweeps 5 After 10 sweeps Read off the DSO Mean parameter voltage and record the measurement in Table 6 column Mean Repeat the test for the other channels substituting channel controls and input connector Record the measurements in Table 6 Repeat the test the other offset settings 1V and 0V Recall xxxP020 PNL for I...

Page 55: ...Rev D Performance Verification 5 19 ...

Page 56: ...37x LT354 DC to 350MHz 10mV to 5V div LT26x Procedure Recall xxxP022 PNL or configure the DSO Panel Setups Recall FROM DEFAULT SETUP Channels Trace ON Channel 1 Channel 2 Channel 3 Channel 4 Input Coupling DC 50Ω Ω Ω Ω on all 4 Channels Input gain 50 mV div on all 4 Channels Input offset 0 mV on all 4 Channels Trigger setup Edge Trigger on Line Slope line Positive Mode Auto Time base 1 µ µ µ µsec ...

Page 57: ...ing the correction factor of the power meter at each frequency Record the generator output amplitude readout in the third column of Table 7 for LT37X or LT354 For LT26X use Table 7A for frequencies of 1 1 MHz 10 1 MHz 100 1 MHz 175 1 MHz 350 1 MHz For LT584 use Table 7B for frequencies of 1 1 MHz 10 1 MHz 100 1 MHz 250 1 MHz 500 1 MHz 1000 1 MHz Disconnect the RF output of the HP8648B generator fr...

Page 58: ...for LT37x or LT354 and Table 7A for LT26x Repeat the above measurement for all channels for 1 1 MHz 10 1 MHz 100 1 MHz 250 1 MHz and 500 1 MHz and record the values in Table 7 for LT37X or LT354 For LT26X use Table 7A for frequencies of 1 1 MHz 10 1 MHz 100 1 MHz 175 1 MHz 350 1 MHz For LT584 use Table 7B for frequencies of 1 1 MHz 10 1 MHz 100 1 MHz 250 1 MHz 500 1 MHz 1000 1 MHz Calculate the ra...

Page 59: ...t amplitude and record it in the third column of Table 8 Repeat the above measurement for 1 1 MHz 10 1 MHz 100 1 MHz 250 1 MHz 500 1 MHz Record the generator output amplitude readout in the third column of Table 8 for LT37X or LT354 For LT26X use Table 8A for frequencies of 1 1 MHz 10 1 MHz 100 1 MHz 175 1 MHz 350 1 MHz For LT584 use Table 7B for frequencies of 1 1 MHz 10 1 MHz 100 1 MHz 250 1 MHz...

Page 60: ...s and input connector Record the measurements in Table 8 for LT37x or LT354 Table 8A for LT26x and Table 8B for LT584 Repeat the above measurement for all channels for 1 1 MHz 10 1 MHz 100 1 MHz 250 1 MHz and 500 1 MHz and record the values in Table 8 for LT37X or LT354 For LT26X use Table 8A for frequencies of 1 1 MHz 10 1 MHz 100 1 MHz 175 1 MHz 350 1 MHz For LT584 use Table 8B for frequencies o...

Page 61: ...ase 1 µ µ µ µsec div Channel use 4 Record up to 25 k WAVE PILOT MEASURE Mode Custom Statistics Off Change parameters On line 1 Sdev of 1 On line 2 Freq of 1 Connect the test equipment as shown in Figure 5 6 Set the generator frequency to 300 kHz Adjust the generator signal amplitude to measure sdev 1 200 mV Set Time base 50 nsec div Increase the generator frequency until sdev 1 140 mV typically 25...

Page 62: ...5 26 Performance Verification Rev D Set Global BWL 200 MHz Set Timebase 5 nsec div ...

Page 63: ...e 9 Repeat the 20 MHz and 200 MHz Bandwidth limiter tests for the other channels substituting channel controls and input connector Recall xxxP025 PNL for Channel 2 xxxP026 PNL for Channel3 xxxP027 PNL for Channel 4 or configure the DSO as shown in 5 9 1 Procedure and make the necessary changes Record the test results in Table 9 and compare the results to the limits ...

Page 64: ...ace ON Channel 1 Channel 2 Channel 3 Channel 4 Input Coupling DC 50Ω Ω Ω Ω on all 4 Channels Input gain 100 mV div on all 4 Channels Input offset 0 mV on all 4 Channels use show status to verify Trigger setup Edge Trigger on 1 Slope 1 Pos Coupling DC Mode Auto Set Trigger level DC 0 0 mV Pre Trigger Delay 50 Time base 0 1 msec div Record up to 50 k samples Channels Trace OFF Channel 1 Channel 2 Ch...

Page 65: ...8 divisions peak to peak Select WAVE PILOT Cursors Time Absolute Use the cursor position knob to move the Time marker at 0 0 µs Press Clear Sweeps Acquire 10 sweeps and record in Table 10 the level readout displayed below 100 mV in the icon 1 at top left Compare the test results to the corresponding limit in the test record Set Trigger Slope 1 Neg Acquire 10 sweeps and record in Table 10 the level...

Page 66: ... Pos Neg and input connector Recall xxxP029 PNL for Channel 2 xxxP030 PNL for Channel 3 xxxP031 PNL for Channel 4 or select Trigger on the Channel under test The Trigger level is displayed in either the icon 2 3 or 4 Record the measurements in Table 10 and compare the test results to the corresponding limits in the test record ...

Page 67: ...l DC 300 mV Connect the output of the generator to Channel 1 through a 50 Ohm coaxial cable Press Clear Sweeps Acquire 10 sweeps and record in Table 10 the level readout displayed below 100 mV in the icon 1 at top left Compare the test results to the corresponding limit in the test record Set Trigger Slope 1 Neg Acquire 10 sweeps and record in Table 10 the level readout displayed below 100 mV in t...

Page 68: ...nput connector Recall xxxP033 PNL for Channel 2 xxxP034 PNL for Channel 3 xxxP035 PNL for Channel 4 or select Trigger on the Channel under test The Trigger level is displayed in either the icon 2 3 or 4 Record the measurements in Table 10 and compare the test results to the corresponding limits in the test record ...

Page 69: ...l DC 300 mV Connect the output of the generator to Channel 1 through a 50 Ohm coaxial cable Press Clear Sweeps Acquire 10 sweeps and record in Table 10 the level readout displayed below 100 mV in the icon 1 at top left Compare the test results to the corresponding limit in the test record Set Trigger Slope 1 Neg Acquire 10 sweeps and record in Table 10 the level readout displayed below 100 mV in t...

Page 70: ...nput connector Recall xxxP037 PNL for Channel 2 xxxP038 PNL for Channel 3 xxxP039 PNL for Channel 4 or select Trigger on the Channel under test The Trigger level is displayed in either the icon 2 3 or 4 Record the measurements in Table 10 and compare the test results to the corresponding limits in the test record ...

Page 71: ...Mode Auto Pre Trigger Delay 50 Time base 0 1 msec div Record up to 50 k samples Channel Trace OFF Channel 2 ANALYSIS CONTROL Trace ON B Select Math TOOLS For Math Use at most 5000 points Redefine B Channel 2 Use Math Yes Math Type Average Avg Type Summed For 10 sweeps Connect the test equipment as shown in Figure 5 7 Set the output of the LeCroy LW420 or equivalent audio frequency signal generator...

Page 72: ...e 10 sweeps and record in Table 11 the level readout displayed below 100 mV in the icon 2 at top left Set Trigger Slope Ext Neg Acquire 10 sweeps and record in Table 11 the level readout displayed below 100 mV in the icon 2 at top left Compare the test results to the corresponding limit in the test record ...

Page 73: ...ect the test equipment as shown in Figure 5 7 Press Clear Sweeps Acquire 10 sweeps and record in Table 11 the level readout displayed below 100 mV in the icon 2 at top left Compare the test results to the corresponding limit in the test record Set Trigger Slope Ext Neg Acquire 10 sweeps and record in Table 11 the level readout displayed below 100 mV in the icon 2 at top left 5 10 6 External Trigge...

Page 74: ...shown in Figure 5 7 Press Clear Sweeps Acquire 10 sweeps and record in Table 11 the level readout displayed below 100 mV in the icon 2 at top left Compare the test results to the corresponding limit in the test record Set Trigger Slope Ext Neg Acquire 10 sweeps and record in Table 11 the level readout displayed below 100 mV in the icon 2 at top left 5 10 7 External 10 Trigger at 0 Division Thresho...

Page 75: ...samples Channel Trace OFF Channel 2 ANALYSIS CONTROL Trace ON B Select MATH TOOLS For Math Use at most 5000 points Redefine B Channel 2 Use Math Yes Math Type Average Avg Type Summed For 10 sweeps Connect the test equipment as shown in Figure 5 7 Set the output of the LeCroy LW420 or equivalent audio frequency signal generator to 1 kHz Adjust the sine wave output amplitude to get 8 divisions peak ...

Page 76: ...00 mV in the icon 2 at top left Set Trigger Slope Ext 10 Neg Acquire 10 sweeps and record in Table 11 the level readout displayed below 100 mV in the icon 2 at top left Compare the test results to the corresponding limit in the test record ...

Page 77: ...rigger level DC 3 V Connect the test equipment as shown in Figure 5 7 Press Clear Sweeps Acquire 10 sweeps and record in Table 11 the level readout displayed below 100 mV in the icon 2 at top left Compare the test results to the corresponding limit in the test record Set Trigger Slope Ext 10 Neg Acquire 10 sweeps and record in Table 11 the level readout displayed below 100 mV in the icon 2 at top ...

Page 78: ...rigger level DC 3 V Connect the test equipment as shown in Figure 5 7 Press Clear Sweeps Acquire 10 sweeps and record in Table 11 the level readout displayed below 100 mV in the icon 2 at top left Compare the test results to the corresponding limit in the test record Set Trigger Slope Ext 10 Neg Acquire 10 sweeps and record in Table 11 the level readout displayed below 100 mV in the icon 2 at top ...

Page 79: ...ns 50 Ohm BNC coaxial cable into Channel 1 Set the generator frequency to 100 MHz Adjust the generator output amplitude to get 5 divisions peak to peak Check that the scope Triggers Record the test result in Table 12 Set Width 10 nsec Off and Width 10 nsec ON Check that the scope doesn t trigger slow trigger and no flashes in box next to normal Record the test result in Table 12 b Pulse Width 10 n...

Page 80: ...5 44 Performance Verification Rev D a Pulse Width 10 nsec b Pulse Width 10 nsec ...

Page 81: ...st result in Table 12 Set Width 100 nsec Off and Width 100 nsec ON Check that the scope doesn t trigger slow trigger and no flashes in box next to normal Record the test result in Table 12 b Pulse Width 100 nsec Set the generator frequency to 4 MHz Time base 50 nsec div Set Width 100 nsec Off and Width 100 nsec ON Check that the scope Triggers Record the test result in Table 12 Set Width 100 nsec ...

Page 82: ...n 1 V div Input offset 0 mV Trigger setup Edge Trigger on 1 Coupling 1 DC Slope 1 Pos Level 1 100 mV Trigger mode Norm Delay 0 Time base 10 µ µ µ µsec div Channel use 4 Record up to 50 k Connect the RF output of the HP8648B generator through a 5ns 50 Ohm BNC coaxial cable into Channel 1 Set the generator frequency to 0 1 MHz Adjust the generator output amplitude to get 5 divisions peak to peak Sto...

Page 83: ...annel 1 trace is aligned with the sine wave from memory 1 This allows the accuracy of the time base clock to be checked 5000 periods after the trigger point A difference of 0 5 µ µ µ µsec corresponds to 10 PPM Calculate the Difference delay A delay 1 50 msec Record the test result in Table 13 and compare it to the limit in the test record ...

Page 84: ...5 48 Performance Verification Rev D ...

Page 85: ...e Version D December 2003 Model Serial Number Customer Software Version Inspection Date Next Due Temperature Humidity Tested By Report Number Place of Inspection Condition found Condition Left Approved By Test Equipment Used Instrument Model S N Cal Due Date Signal Generator Radio Frequency Signal Generator Audio Frequency Voltage Generator DC Power Supply Step Generator Fast Pulser Digital Multim...

Page 86: ...Rev D 2 of 12 This page intentionally left blank ...

Page 87: ... Ω Ω Ω Upper Limit Ω Ω Ω Ω MΩ Ω Ω Ω DC 1MΩ 50 mV div 0 99 MΩ 1 01 MΩ DC 1MΩ 200 mV div N A N A 0 99 MΩ 1 01 MΩ AC 1MΩ 50 mV div N A N A 1 188 MΩ 1 212 MΩ AC 1MΩ 200 mV div N A N A 0 99 MΩ 1 01 MΩ DC 50Ω 50 mV div N A 49 5 Ω 50 5 Ω DC 50Ω 200 mV div N A N A 49 5 Ω 50 5 Ω Table 2 Impedance Test Record Coupling Volts div Measured Channel 1 Leakage mV Measured Channel 2 Leakage mV Measured Channel 3 L...

Page 88: ...easured sdev Channel 1 mV Measured sdev Channel 2 mV Measured sdev Channel 3 mV Measured sdev Channel 4 mV Limits mV DC 1MΩ 20 ms 0 5 0 45 DC 1MΩ 1 ms 0 5 0 45 DC 1MΩ 50 µs 0 5 0 45 DC 1MΩ 2 µs 0 5 0 45 AC 1MΩ 2 µs 0 5 0 45 DC 50Ω 2 µs 0 5 0 45 DC 50Ω 20 µs 0 5 0 45 Table 4 RMS Noise Test Record ...

Page 89: ...an B 2 Mean DMM DMM 3 Mean C 3 Mean DMM DMM 4 Mean D 4 Mean DMM Limits 0 6 V 1 25mV 2 mV X 100 40 db 0 6V 1 25mV 1 5 V 1 625 mV 5 mV X 100 40 db 1 5V 1 625 mV 3 0 V 2 25 mV 10 mV X 100 40 db 3 0V 2 25 mV 6 0 V 2 5 mV 20 mV X 100 40 db 6 0V 2 5 mV 1 5V 7 25mV 50 mV X 10 20 db 1 5V 7 25mV 3 0 V 13 5mV 0 1 V X 10 20 db 3 0V 13 5mV 3 0 V 126mV 1 V X 1 3 0V 126mV 15V 0 626V 5 V X 1 15V 0 626V Table 5 D...

Page 90: ... MΩ 1 V 1 V 16 2 5mV 1MΩ 0V 0V 1 2 Table 6 Offset Test Record Frequency Measured Power Generator Amplitude Measured Channel 1 Measured Channel 2 Measured Channel 3 Measured Channel 4 Lower Limit Upper Limit MHz mW mV Sdev 1 mV Ratio 1 to 0 3 Sdev 2 mV Ratio 2 to 0 3 Sdev 3 mV Ratio 3 to 0 3 Sdev 4 mV Ratio 4 to 0 3 0 300 0 200 N A N A N A N A N A N A 1 1 0 200 0 91 1 09 10 1 0 200 0 91 1 09 100 1 ...

Page 91: ... 0 91 1 09 175 1 0 200 0 86 1 12 350 1 0 200 0 73 1 11 Table 7A DC 50Ω Ω Ω Ω 50 mV div Bandwidth Test Record for LT26x Frequency Measured Power Generator Amplitude Measured Channel 1 Measured Channel 2 Measured Channel 3 Measured Channel 4 Lower Limit Upper Limit MHz mW mV Sdev 1 mV Ratio 1 to 0 3 Sdev 2 mV Ratio 2 to 0 3 Sdev 3 mV Ratio 3 to 0 3 Sdev 4 mV Ratio 4 to 0 3 0 300 0 200 N A N A N A N ...

Page 92: ... 0 800 0 91 1 09 250 1 0 800 0 86 1 12 500 1 0 800 0 73 1 11 Table 8 DC 50Ω Ω Ω Ω 100 mV div Bandwidth Test Record for LT37x and LT354 Frequency Measured Power Generator Amplitude Measured Channel 1 Measured Channel 2 Measured Channel 3 Measured Channel 4 MHz mW mV Sdev 1 mV Ratio 1 to 0 3 Sdev 2 mV Ratio 2 to 0 3 Sdev 3 mV Ratio 3 to 0 3 Sdev 4 mV Ratio 4 to 0 3 Lower Limit Upper Limit 0 300 0 80...

Page 93: ...00 0 91 1 09 100 1 0 800 0 91 1 09 250 1 0 800 0 86 1 12 500 1 0 800 0 81 1 12 1000 1 0 800 0 73 1 11 Table 8B DC 50Ω Ω Ω Ω 100 mV div Bandwidth Test Record for LT584 LT37x LT354 LT26x Lower Upper Lower Upper Globa l BWL Amplitude at 300 kHz Measured Channel 1 Measured Channel 2 Measured Channel 3 Measured Channel 4 Limit Limit Limit Limit MHz Sdev mV Sdev 1 mV Freq 1 MHz Sdev 2 mV Freq 2 MHz Sdev...

Page 94: ...0 330 300 Neg 270 330 300 Pos 270 330 300 Neg 270 330 Table 10 Channel DC Trigger Test Record Trigger Slope External Trigger Level External DC External Limits External 10 Trigger Level External 10 DC External 10 Limits mV Measured DC Trigger Level Ext mV Lower MV Upper mV V Measured DC Trigger Level Ext10 V Lower V Upper V Pos 0 50 50 0 0 5 0 5 Neg 0 50 50 0 0 5 0 5 Pos 300 250 350 3 2 5 3 5 Neg 3...

Page 95: ...s 10 100 Off On No 10 40 Off On Yes 10 40 On Off No 100 10 On Off Yes 100 10 Off On No 100 4 Off On Yes 100 4 On Off No Table 12 Smart Trigger Test Record Generator Frequency MHz Post Trigger Delay Msec Delay A µs Delay 1 msec Difference delay A delay 1 50msec Lower Limit µ µ µ µsec Upper Limit µ µ µ µsec 0 1000 50 0 0 5 0 5 Table 13 Time Base Test Record ...

Page 96: ...Rev D 12 of 12 LT584 LT374 372 LT354 LT264 262 Test Record This page intentionally left blank ...

Page 97: ... Exercise extreme safety when testing high energy power circuits Always turn the power OFF disconnect the power cord discharge the cathode ray tube and all capacitors before disassembling the instrument 6 1 2 Antistatic Precautions Any static charge that builds on your person or clothing may be sufficient to destroy CMOS components integrated circuits Gate array s etc In order to avoid possible da...

Page 98: ...n the scope boots enter the Show Status System menu to verify that version 08 1 1 or later is currently running Insert the Firmware Update Disk into the scope s floppy drive Select Utilities Special Modes Firmware Update Update from Floppy Press twice Update Flash Wait for two minutes until displaying FLASH UPDATE SUCCESSFUL on the DSO When the operation is complete remove the floppy and reboot th...

Page 99: ...ve Analysis MC01 PCMCIA Memory Card JTA Jitter and Timing Analysis 6 2 2 1 Changing Software Option Key a Scope ID Scope Serial Number The scope ID and scope s n are used to request a Software Option Key Enter the scope s Software Options menu located under the STATUS SYSTEM menu Note the SCOPEID i e C63B9B A5 and Scope s n LT34400156 that are found on that menu b Entering Option Key in the DSO En...

Page 100: ...Board 6 4 3 None DMB020691 Floppy Disc Drive None None 213025681 Printer Assy None The other parts are not on the above list because the probability of failure is very low See chapter 7 and 8 for mechanical and electrical replaceable parts 6 4 Board Exchange Procedure 6 4 1 Processor Board Exchange Procedure The serial number of the LT Series oscilloscope is loaded in the real time clock memory wh...

Page 101: ... Procedure After Power Board is exchanged confirm the voltage as the following procedure Remove the upper cover and the lower cover see 7 G Turn the scope upside down Turn on the power set the scope to Auto Trigger and 500MS s Confirm the following voltage on solder side of Main Board within ten minutes 12V analog Min 11 76V Max 12 24V 21C11 5V analog Min 4 925 Max 5 075V 21C21 5V analog Min 4 975...

Page 102: ...2 Line Fuses Replacement The power supply of the oscilloscope is protected against short circuits and overload by means of two T6 3A 250 V fuses located above the main plugs Turn off the power and disconnect the line cord from the instrument Disconnect the instrument from other equipment To replace line fuses proceed as follow Open the fuse box by inserting a small flat screwdriver under the plast...

Page 103: ...Controls Do not Operate See Section 6 5 9 Remote Control GPIB or RS232 Problem See Section 6 5 10 Performance Verification Tests Fail See Section 6 5 11 Floppy Disk Problem See Section 6 5 12 Graphic Printer Problem See Section 6 5 13 Centronics or Problem External VGA Video Plug in the Power Cord and Turn on the waverunner Hard Disk Problem See Section 6 5 14 Maintenance 6 7 ...

Page 104: ...0 to 250V OK Repair as Needed AC Power Cord OK Repair Power Code Is 12V from Power Supply to Fan Correct Replace Fan Assembly See Power Supply Problem Section 6 5 5 Y Y Y N Y DSO Input Line Fuses OK Y N See Power Supply Problem Section 6 5 5 N Y N End Start ...

Page 105: ...l Opened N Y Is Fan mortor Stopped N Y Is Power Supply Load Shorted N Y Is Fan mortor Broken N Y Over Load Protection Replace the Defective Board or Unit Over Heat Protection Replace Fan mortor Assembly Cool Down and Take Off AC Power Cord from Power Supply Unit over 10 seconds Power Supply is Broken Replace Power Supply Unit End Start Maintenance 6 9 ...

Page 106: ...oltages on CPU Board J1 28 30 Correct Replace CPU board Do a General Reset N Is External VGA Video Correct Replace LCD connector Check All Cables are Correctly Connected Replace LCD Replace CPU board Replace Main board Replace Front Panel Is LCD Back Light Correct Replace LCD Replace Back Light Module Y Y N Y N Y N End End End Start ...

Page 107: ... Power Supply Problem Are Power Supply Voltages Correct on CPU Board J6 4 5 Replace CPU board Do a General Reset Is Flat Cable to Panel Correctly Installed Replace CPU board Replace Front Panel Y N Y N Y N Replace Main Board End Reseat or Replace Flat Cable from CPU board J6 Start Maintenance 6 11 ...

Page 108: ...em Is DSO GPIB RS232 Setup Correct Change Setting in DSO Utilities Main Menu Is Appropriate Device Settings Correct Change Device Settings Is RS232 Cable Configuration Correct Replace CPU board Y N Y N Y N End Check RS232 Cable Pinout from DSO to Device Start ...

Page 109: ... Disk Drive Problem Is Cable to Floppy Disk Drive Properly Installed Replace CPU board N Y Replace Floppy Disk Drive Do a General Reset End Fix Flat Cable from CPU board to Floppy Disk Drive Start Maintenance 6 13 ...

Page 110: ...tages Correct at 21J1 2 3 on CPU Are Power Supply Voltages Correct at HAD626 See Power Supply Problem Check 7 to 10IC2 3 4 5 Is Channel 1 2 3 4 Impedance 50Ohm 1MOhm Correct Check 2 to 6RL1 2 3 4 5 Do all Performance Tests Pass S S Y N Y N Y N Y N End Replace Main Board Start ...

Page 111: ...lled Fix Flat Cable from CPU Board to Printer Controller Board Replace CPU board N Replace Printer Unit Y Y N Check Power Cable From Power Supply to Printer Controller See Power Supply Problem Are Power Supply Voltages on Printer Controller P4 Correct End Start Maintenance 6 15 ...

Page 112: ...6 16 Maintenance 6 5 12 Centronics Problem Replace CPU Board Do a General Reset Check Appropriate Protocol Check Setting in DSO Utilites Menu Hard Copy Setup Output to Centronics End Start ...

Page 113: ...6 5 13 Hard Disk Drive Problem Replace CPU Board Replace Hard Disk Drive Check Setting in DSO Utilites Menu Hard Copy Setup Output to Hard Disk End Start Maintenance 6 17 ...

Page 114: ...6 18 Maintenance ...

Page 115: ...h nylon washer one on the top each two on the right and left sides four on the rear A3 In the case of a unit with a built in printer option open the printer cover and depress the locking latch A4 Slide the upper cover rearward by approx 5 mm It is firm A5 Remove the upper cover by opening and lifting the lower portion of the cover A1 A4 Slide by 5 mm 2 1 A2 A5 A3 Press ...

Page 116: ...m IWATSU Part Number Quantity Description 1 MKB130062 9 0 Screw M3x6 2 MPW930000 9 0 Washer W 3 nylon 3 KBA787311 1 0 STD TOP COVER LE 4 MTH000791 1 0 Handle THA 238 L260 UL I 5 MGA000721 4 0 Side Foot 5475 UL I 6 KPL142611 3 0 Cushion 3 4 5 6 21302 5676 1 0 LT UPPER COVER ASSY ...

Page 117: ... Screw M3x6 2 MPW930000 5 0 Washer W 3 nylon 3 KBA786321 1 0 TOP COVERL E 4 MTH000791 1 0 Handle THA 238 L260 UL I 5 MGA000721 4 0 Side Foot 5475 UL I 6 KPL142611 3 0 Cushion 7 KCM141411 1 0 PRINTER COVER FRAME UL I 8 KCM141311 1 0 PRINTER COVER UL I 3 4 5 6 7 8 21302 5677 1 0 LT UPPER COVER GP02 ASSY Mechanical Part Removal 7 3 ...

Page 118: ... screws with nylon washer 3 on the bottom 2 on the rear 4 5 3 2 1 3 2 2 2 Bottom Cover Replaceable Parts Item IWATSU Part Number Quantity Description 1 KBA786921 1 0 BOTTOM COVER LE 2 KAS137811 4 0 BOTTOM FOOT ASSY 3 KCM131421 2 0 Rotor for the tilt stand 4 MKB130062 5 0 Screw M3x6 5 MPW930000 5 0 Washer W 3 nylon ...

Page 119: ... M3 x 6 screws 2 on the TOP FRAME L 2 on the center frame C2 Remove the CPU J7 FFC cable C2 Remove the POWER BOARD CN6 power 3P cable C1 C3 1 10 C2 View as the rear side of the printer unit lifted C4 3 5 Printer Rear CN6 power 3P cable J7 FFC cable Mechanical Part Removal 7 5 ...

Page 120: ... UL I 5 AHB202811 1 0 FFC 26P L140 P1 CPU 6 KCM141211 1 0 PRINTER CASE UL I 7 MFA001471 1 0 TL 304 1 8 KBA785511 1 0 PRINTER BASE UNIT 9 MSQ901661 3 0 Screw TT2 3X8S 10 KBA786211 1 0 CENTER FRAME 11 MKB130062 2 0 Screw KB 3X6S NIP 12 MSQ903531 3 0 Screw S tight KB 2 5X6S 13 MKB130062 4 0 Screw KB 3X6S NIP 14 MHK000961 1 0 BAND CV 70 YJ 80 15 KCM142121 1 0 TKM KEYTOP B GR UL I 2 to 15 21302 5681 1 ...

Page 121: ...PU D1 Remove two M3 x 6 screws on the TOP FRAME R and FRONT FRAME A D1 D2 1 2 3 4 5 Floppy Replaceable Parts Item IWATSU Part Number Quantity Description 1 MKB130062 2 0 Screw M3x6 2 DMB020691 1 0 FD DRIVE WIDE 00B See Fig D2 3 KBA785211 1 0 FDD SUPPORT PLATE 4 MSQ903521 2 0 Screw M2 5x4 Mechanical Part Removal 7 7 ...

Page 122: ...the P5 power connector on the CPU Board to LCD E1 Remove the P11 power connector on the CPU Board to POWER E2 Remove the four M3 x 6 screws 4 on the rear fastening between connectors and between the rear panel and CPU Remove the eight M3x6 screws on the TOP FRAME L and R E3 Remove the six M3 x 6 screws on the CPU Board and remove the processor broad by sliding it toward the front side Caution Batt...

Page 123: ...CPU Board Replaceable Parts Item IWATSU Part Number Quantity Description 1 MKB130062 18 0 Screw M3x6 2 21302 5610 1 0 CPU BOARD ASSY 3 KBA784421 1 0 TOP FRAME L 4 KBA784511 1 0 TOP FRAME R Mechanical Part Removal 7 9 ...

Page 124: ...while pressing the stopper of 21J1 and 21J2 F1 a b Remove the two support PNC20 from the main board F1 a b Remove the nine M3 x 6 screws on the Main Board Remove the main board by lifting its rear side slightly and sliding it rearward F1a 1 3 2 Press 21J1 21J2 Main Board Replaceable Parts Item Part Number Quantity Description 1 MKB130062 11 0 Screw M3x6 2 MZT902191 2 0 Metallic support PNC20 3 213...

Page 125: ... F1b M3x6 Rear Side Front Side 21J1 21J2 20J4 21J3 16J2 20J3 20J1 20J2 M3x6 M3x6 M3x6 M3x6 M3x6 M3x6 Support PN20 Support PN20 M3x6 M3x6 Mechanical Part Removal 7 11 ...

Page 126: ...7 12 Mechanical Parts Removal F2 ...

Page 127: ...move the connector CN7 on the Power board from the fan G2 G3 Remove the seven M3 x 8 screws 2 on the rear inlet 4 on either side 1 on the top G1 G3 G2 2 2 2 2 To CN7 2 1 Main frame Power Board Replaceable Parts Item IWATSU Part Number Quantity Description 1 MHK001541 1 0 Harnessing belt SL 9N 2 MKB130082 8 0 Screw M3x8 3 21302 5615 1 0 Power Board ASSY Mechanical Part Removal 7 13 ...

Page 128: ...es R and L H2 Inverter plate Remove the two M3 x 6 screws H2 Inverter board Remove the two tap tight M2 x 6 screws H2 Remove the eight a screws that secure the BEZEL and FRONT FRAM A B LCD Assembly H3 H4 H5 H3 Remove the four LCD mounting screws H4 Remove the connection board between LCD and KEY BOARD while holding the connectors FRONT PANEL ASSY Remove the knobs H6 Remove the nine screws that sec...

Page 129: ...E R 4 MKD130061 4 0 Screw M3x6 5 MZT903161 7 0 Metallic support PSC60 H2 H2 Replaceable Parts Item IWATSU Part Number Quantity Description 1 KPL143211 1 0 INVERTER PLATE UL 1 2 KBA784121 1 0 FRONT FRAME A 3 KBA784211 1 0 FRONT FRAME B 4 MKB130062 2 0 Screw M3x6 5 MSQ901661 8 0 Screw TT2 3x8S 6 DES040271 1 0 DC AC INVERTER S 12598 5M Mechanical Part Removal 7 15 ...

Page 130: ... LCD Assembly H3 1 LCD LQ084VIDG21 H4 H5 2 3 H3 to H5 Replaceable Parts Item IWATSU Part Number Quantity Description 1 MSQ903511 4 0 Screw PKB 2 5x8S 2 21302 5615 1 0 LCD CONNECTOR BOARD UL M 3 21302 5680 1 0 LT LCD UNIT See Fig H5 ...

Page 131: ...FRONT PANEL ASSY H6 2 7 1 3 Gasket 4 H7 H8 2 KEY RUBBER 5 KNOB D9 5 KNOB D9 6 KNOB D12 6 KNOB D12 Mechanical Part Removal 7 17 ...

Page 132: ...0 KNOBE D12 UL I 7 21302 5613 1 0 PANEL KEY BOARD See Fig H7 1 to 7 21302 5678 1 0 LTxx4 FRONT PANEL 4CH See Fig H6 LT342 322 FRONT PANEL ASSY Item IWATSU Part Number Quantity Description 1 KCM143211 1 0 BEZEL FND12 UL 1 2 KGM029711 1 0 FND14 KEY PUBBER UL I 3 MZT007871 1 0 GASKET UC 3E0564 UL I 4 KPA219111 1 0 LT342 CONTROL PANEL UL I 5 KCM141021 7 0 KNOBE D9 UL I 6 KCM141121 4 0 KNOBE D12 UL I 7...

Page 133: ...and four M3 x 6 screws from the main frame I2 Remove four fan motor fastening M3 x 6 screws I1 I2 4 3 2 5 1 6 Rear Panel Replaceable Parts Item IWATSU Part Number Quantity Description 1 KBA785111 1 0 REAR FRAME 2 KCM138221 4 0 Cord rack 78 UL I 3 KSN091911 1 0 WIRE NET MESH 5 4 MKB130062 8 0 Screw M3x6 5 MSM140101 4 0 Screw SM1 4X10 6 DMT620701 1 0 FAN 109R1212M114 Mechanical Part Removal 7 19 ...

Page 134: ...nd shuts correctly Insert a floppy and eject it to check the mechanism Front Panel Check that knobs rotate freely are the right size and in the right place Do not forget the gasket see Fig H6 Main Board The main card must be parallel and tacked against the bend of the lower cover Being careful not to bend the board or damage components underneath Processor Check that the memory card insertion guid...

Page 135: ...3 2 2R115 51 S 2R131 300 2R7 20D 2C92 0 01u 2Q10 DTA114YK 5V CH1 OFFSET 2L4 BLM21A121F 2R133 62 S 5V FE SRDAT 2C20 0 047u 250V 2R38 200kD 18IC10 13IC1 12V CH1 VAL 2R31 30 2Q11 DTA114YK 2C2 8p 2Q14 2SC2712 CH1 INPUT CH1 VAL 2Q2 2SC3583 19IC7 2D10A 1SS272 4 1 2R55 6 2k 2R138 100 S 2L12 8 2nH 2R126 1k 2R1 20D CH1 IIC DA 2R87 LP310 2K 2Q15 DTC114YK 2R9 20D 2L17 47 S 12V CH1 TRIG 2C111 5p 2H 2R14 5 6 2...

Page 136: ...ax 19IC7 12V 3C36 0 1u S 3RL1C NAS5W K 8 1 3R6 20D 3R135 100k 3R68 30k CH2 P SENSE 5V FE2 3RL5C NAS5W K 8 1 3R92 51 3Q7 DTA114YK 18IC11 3C96 1u 1E 3R106 560 7IC1 12V 3C102 1u 1E 3D5 1SS226 3C58 1u 1E 3R81 100kD 3C45 0 01u 3R2 20D 3C24 1p 3C39 100p 5V CH2 CAL SIG 12V FE2 3C43 0 1u 3FL7 NFM39R12C222 3R47 3M 3C87 0 01u 5V CH2 IIC DA 3C47 0 033u K NH I ee V ss V A dd V 3IC7 TC4W53F 1 7 6 5 2 8 4 3 ATT...

Page 137: ...Amax CH3 VAL 4Q12 2SA1162 4R88 10k 132mAmax 4L11 8 2nH 4C94 1000p NOTE All components except the marked components are unmounted for the two channels model 5V 4L23 0J 4C58 1u 1E 4R27 430kB 4R23 NUR 4C6 25p VC 4R21 200 4R84 1 6k 4R40 200kD 4R126 1k 4R2 20D 4R138 100 S 12IC1 5V 4L4 BLM21A121F 4C50 MVY220u 16V 4C109 10u 4RL4C NASL 5W 8 1 4D5 1SS226 4R115 51 S 4C80 0 1u 12V 4R77 51k 19IC7 12V CH3 4R13...

Page 138: ...5Q11 DTA114YK 12V 5L1 18nH 5C39 100p CH4 OVLD 5V FE4 5R12 36 5R65 220 5L22 0J 5R74 200kD 5C3 5p 2H 5D2 HSM124S 18IC16 CH4 TRIG 5C12 25p VC 5R31 30 5V FE4 5R42 200kD 5R138 100 S 5Q12 2SA1162 5L11 8 2nH 7IC2 CH4 P SENSE IIC CLK 5R52 NTH5G 221J 5Q19 2SK2685 2 1 3 4 5C76 0 47u K 7IC2 12V 5R33 68 5R63 47 5R45 120 12V 12V 5R28 110kB 5IC2B NJM082M 5 6 7 5C112 3p VC 5R35 200kD 5R83 2k 5C18 10p 5V 5R15 220...

Page 139: ...32 33 29 6 5 4 3 2 21 25 15 14 12 11 22 23 19 27 8 1 9 10 13 16 36 31 28 26 24 20 7 35 18 34 30 17 VTH1P VTH2P PIN DOUT MR_ LD SCK DIN VEE VEE _OUT1 OUT1 _OUT2 OUT2 CACP CACN TEMP VBREF GND GND GND GND GND GND GND GND GND GND GND GND VCC VCC GND HYST NIN LINOUT 6R76 110kB 6C28 0 01u 5V 6C33 0 01u 6R9 20D 5V 6L6 BLM21P221 6C92 0 01u 6C3 5p 2H 13IC1 6R69 4 7kD 12V IIC CLK 6C109 0 1u 6R19 110kB 6R47 ...

Page 140: ...B 19T 19U 22A 22B 22T 22U 23A 13A 13B 13T 20B 20T 20U 21A 21B 21T 21U 28N 29N 28M 29M 28H 29G 28F 28E 28R 28Q 29Q 28P 28B 29D 28J 29H 14A 28S 28K 28T 14B 28D 28C 4B 4C 4S 4T 4U 5U 6T 6U 8A 8T 8U 11U 12T 12U 15T 15U 16A 16B 16T 16U 17A 17B 17T 17U 24A 24B 24T 24U 25A 25B 25T 25U 29E 29F 29K 29L 29T 29U 10A 10B 29C 14U 14T 13U 15A 15B 20A 28G 1D 1E 1F 1H 1K 1M 1P 1Q 1R 2C 2E 2F 2H 2K 2M 2P 3D 3R 3T ...

Page 141: ... 12A 12B 2G 5B 5T 6A 6B 9A 9B 10T 1G 10U 1L 2L 7A 7B 9T 9U 11A 11B 18A 18B 18T 18U 19A 19B 19T 19U 22A 22B 22T 22U 23A 13A 13B 13T 20B 20T 20U 21A 21B 21T 21U 28N 29N 28M 29M 28H 29G 28F 28E 28R 28Q 29Q 28P 28B 29D 28J 29H 14A 28S 28K 28T 14B 28D 28C 4B 4C 4S 4T 4U 5U 6T 6U 8A 8T 8U 11U 12T 12U 15T 15U 16A 16B 16T 16U 17A 17B 17T 17U 24A 24B 24T 24U 25A 25B 25T 25U 29E 29F 29K 29L 29T 29U 10A 10B ...

Page 142: ...2T 22U 23A 13A 13B 13T 20B 20T 20U 21A 21B 21T 21U 28N 29N 28M 29M 28H 29G 28F 28E 28R 28Q 29Q 28P 28B 29D 28J 29H 14A 28S 28K 28T 14B 28D 28C 4B 4C 4S 4T 4U 5U 6T 6U 8A 8T 8U 11U 12T 12U 15T 15U 16A 16B 16T 16U 17A 17B 17T 17U 24A 24B 24T 24U 25A 25B 25T 25U 29E 29F 29K 29L 29T 29U 10A 10B 29C 14U 14T 13U 15A 15B 20A 28G 1D 1E 1F 1H 1K 1M 1P 1Q 1R 2C 2E 2F 2H 2K 2M 2P 3D 3R 3T 4A 2Q 2S 3B 28U 28L...

Page 143: ...U 25A 25B 25T 25U 29E 29F 29K 29L 29T 29U 10A 10B 29C 14U 14T 13U 15A 15B 20A 28G 1D 1E 1F 1H 1K 1M 1P 1Q 1R 2C 2E 2F 2H 2K 2M 2P 3D 3R 3T 4A 2Q 2S 3B 28U 28L 29P 23B 23T 23U 26A 26B 26T 26U 27A 27B 27T 27U 29J 29R 29S VIN VINB CLK CLKB GA GAB OA OAB SDA SDAB GORB ADC TEMP DRRB VPLUSD VPLUSD VCC VCC VCC VCC VCC VCC VCC VCC AVEE VCC AVEE AVEE AVEE AVEE AVEE AVEE DVEE DVEE 2 5V 2 5V 2 5V 2 5V 2 5V 2...

Page 144: ...12C64 0 01u 13IC9 12DL3 LDH33A801B 3 2 4 5 6 1 7V T2CK 14IC1 CH3 TRIG 12R16 51 S CH4 TRIG 12R68 75 12C48 1u 1E 12R28 2 4k S 3IC4 12C22 3p 12IC3E MC10H125M 9 8 1 16 12DL4 LDH33A801B 3 2 4 5 6 1 14IC1 4IC4 TV SIG1 T2LD 4 5Vmst 12R11 51 S 12R50 4 7 12R26 2 2k 12L3 4 7nH 12C92 0 1u 12C112 0 01u S T3LD 12Q5 2SC3356 12R42 2 7k D8B3 12R77 330 12C45 0 1u 4IC4 5V D8B 0 7 CH4 TRIG T4END 12C111 4p S 18IC13 5...

Page 145: ...I ee V ss V A dd V 13IC3 TC4W53F 1 7 6 5 2 8 4 3 5V 13R24 220k 115mAmax 5V 6 8mAmax LINE SIG 13C53 0 1u 13R5 120k 13Q4 3SK241 3 4 1 2 13C50 0 1u TV SEL2 13R43 560 12V TV POLA 13R16 100k TV SEL3 6 8mAmax TV TRIG LD 13C3 1u 1E 13C44 0 1u J 13C59 0 1u 13C17 120p 13D4B 1SS272 3 2 NH I ee V ss V A dd V 13IC7 TC4W53F 1 7 6 5 2 8 4 3 12V 13R30 12k 13C54 1000p 13R25 3 9k 3IC4 5V 5V 5V ANA 13R41 820k 13R22...

Page 146: ...10k 14IC2 MCG426 11 20 17 16 14 15 60 61 55 56 5 3 66 6 10 9 12 67 64 70 33 94 95 50 98 76 77 78 81 82 83 86 87 26 48 100 45 49 93 43 89 90 44 27 28 31 32 36 37 39 40 99 22 21 4 2 52 54 65 71 72 73 74 1 25 51 75 18 19 96 97 88 79 80 46 47 38 29 30 7 8 91 92 57 58 68 69 41 42 13 34 35 63 84 85 23 24 53 59 62 _RESET _CS _STB R_W A1 A0 VCO2G _VCO2G EXTCK _EXTCK EXTREF INTREF FDEND MACQ TRIG _TRIG RAM...

Page 147: ...81 220kB 15C95 NUC S 15R30 47 S 15C16 0 1u 15R73 8 2k 15L1 BLM21A121F 15R50 51 S 15Q3 2SC3356 12V ANA 15R34 100 S 1 0V 14IC8 15D3B HSM88AS 2 3 5V ANA 15R82 240kB 15C50 0 1u S 12V 12V 15R14 10k 15C36 0 1u 15L5 BLM21A121F 10uA 15R36 1k 15Q7 2SC3583 15D1B HSM88AS 2 3 5 2V 15R22 47 15R38 51 15R84 180 15IC4 NJM431 3 1 2 12V 15R39 33k 15IC1A uPC812G 3 2 1 8 4 15IC2 LT1097S8 3 2 6 7 1 4 5 8 X2000 20mA A ...

Page 148: ...D VSS VEE C A B INH 19IC5 5V MB SRCLK 16C73 1000p 16C64 0 1u 400mV MB SRCLK 16C87 0 1u S 16P1 PAD3 16C99 120p 5Va 5V ANA 16R40 51 S 5Va INTLV CAL 16C10 0 01u 4 0V 5V 12V ANA CH1 CAL SIG 16C113 33p S 16L4 BLM21A121F 16Q1 2SC2873 20IC24 12V 16R11 2 7k 16R16 75 16D1A 1SS272 4 1 16IC4 HC4053 16 8 7 12 13 2 1 5 3 14 15 4 11 10 9 6 VDD VSS VEE X0 X1 Y0 Y1 Z0 Z1 X Y Z A B C INH 14IC1 5Va CAL OUT 18IC14 1...

Page 149: ... SENSE 17C10 0 01u 3J2 NOTE The marked components are unmounted for the two channels model 17C59 0 1u 17C73 MVY220u 16V 17R31 24k S 17C16 100p 17R22 330 17IC7A uPC812G 3 2 1 8 4 12V DCG CHARGE 17R13 7 5k 12V CH1 OVLD 17C53 1u 1E 17C54 1u 1E 17R17 330 5V 17R19 1 0M MB SRDAT 17C71 MVY220u 16V 17C78 0 01u S 5Va 5Va DEC INH 19IC5 17IC6 uPC311G 2 3 7 4 8 5 6 1 17C12 0 01u 17R10 240 5Va DCG SA1 17L3 BLM...

Page 150: ...INH 12V 18IC12C TL084CNS 10 9 8 12Vdcg 18C66 0 1u 18C7 0 1u K 3IC2 12IC1 12V 5V 18C12 0 1u J 18R13 180 18C24 0 1u K 18C9 0 1u K 18R31 100 MST REF4 18C72 0 1u 12Vdcg 18IC16D TL084CNS 12 13 14 4IC2 12V 12IC1 CH1 GAIN CH4 TRIG LVL2 5IC4 CH2 OFFSET 18C23 0 1u K 18IC12A TL084CNS 3 2 1 4 11 5V DCG CHARGE 18C14 0 1u K 18C22 0 1u K 17IC8 18C16 0 1u K 5V ANA 18R1 180 12V 18C71 0 1u 18RA4 100 4 1 2 3 4 5 6 ...

Page 151: ...7 D8B0 19RA8 4 7k 4 1 2 3 4 5 6 7 8 3 3V MDB52 MDB47 19R40 150 RM INT 3 3V MA5 19RA18 4 7k 4 1 2 3 4 5 6 7 8 19IC5D 74VHCT08 12 13 11 17IC1 MCS0 MD2 MA12 AM2 MDB66 MDB11 19C33 0 1u S 19C13 0 1u 19C16 0 1u 20IC13 5Va TRST MDB7 7 0 19RA9 4 7k 4 1 2 3 4 5 6 7 8 17IC1 MDB27 MDB4 7 0 MDB45 19R39 47 19RA21 4 7k 4 1 2 3 4 5 6 7 8 19C26 0 1u 8B R W 5V DIG MDB21 MDB14 TCK 19R34 39 19R21 47 S 3 3V MDB55 3 3...

Page 152: ...L H 16IC6 CH3 ADDLY FE SRCLK RSTRPM D8B0 20R41 1k 20C25 0 1u CH4 HYST CH4 IIC DA MD25 MD2 D8B2 20R63 1 1k 19IC1 MD23 MD20 20RA5 4 7k 4 1 2 3 4 5 6 7 8 5V SR A1 SR A2 20R18 10kD 20IC24 TC7S08F 1 2 5 4 3 20J3 52808 2291 2 1 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 19IC7 5V 5IC3 5 MD13 ATT CONT 5V SIZE0 MD18 from to 19IC2 19IC3 5V ANA 19IC1 SR A6 SR A1 20IC16 74HC74 2 3 4 1 12 11 10 13 5 ...

Page 153: ... 10u 21C74 1u 1E 21L43 BLM21P221 21L16 BLM21P221 21C81 0 01u 12V CH4 21L1 BL02RN2 21L20 BLM21P221 5V DIG 21C116 0 01u S 21C40 10u 21C76 MVY330u 6 3V 21C15 0 01u 21J2 53258 08 2 1 3 4 5 6 7 8 molex 21C78 1u 1E 21C96 MVY220u 16V 21C115 0 01u S 21C46 MVY220u 16V 21C20 0 01u 21C82 1u 1E 12V CH1 12V input 21C85 MVY330u 6 3V 2 5V DIG 2 5V input 21C9 MVY220u 16V 21C91 0 01u S 21C33 1u 1E 21C19 1000p 21C3...

Page 154: ...Mechanical Part Removal 7 21 ...

Page 155: ...e NY 10977 6499 USA Tel 845 425 2000 Fax 845 425 8967 http www lecroy com Copyright October 2001 LeCroy is a registered trade mark of LeCroy Corporation All rights reserved Information in this publication supersedes all earlier versions Specifications subject to change ...

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