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Adjustment Procedure— 2236 Service
POWER SUPPLY AND CRT DISPLAY
Equipment Required (see Table 4-1):
Leveled Sine-Wave Generator (Item 2)
Digital Voltmeter (Item 22)
Time-Mark Generator (Item 3)
DC Voltmeter (Item 24)
50-12 BNC Cable (Item 8)
50-12 BNC Termination (Item 9)
Screwdriver (Item 25)
See
ADJUSTMENT LOCATIONS 1
at the back of this manual for test point and adjustment locations.
INITIAL CONTROL SETTINGS
a. Connect the digital voltmeter low lead to chassis
ground and connect the volts lead to the — 8.6-V supply
Vertical
(TP961).
POSITION (both)
Midrange
VERTICAL MODE
CH 1
CH 1 VOLTS/DIV
5 mV
CH 1 VOLTS/DIV Variable
CAL detent
Channel 1 Input Coupling
GND
b. CHECK— Voltmeter reading is between —8.56 and
-8 .6 4 V. If the reading is within these limits, skip to part d.
Horizontal
POSITION
Midrange
c. ADJUST—The -8 .6 V Adj potentiometer (R938) for a
HORIZONTAL MODE
A
voltmeter reading of -8 .6 V.
A SEC/DIV
X-Y
SEC/DIV Variable
CAL detent
X I0 Magnifier
Off (knob in)
d. CHECK— Voltage levels of the remaining power sup-
A TRIGGER
plies listed in Table 5-2 are within the specified limits.
VAR HOLDOFF
NORM
Mode
SLOPE
LEVEL
P-P AUTO
OUT
Midrange
Table 5-2
Power Supply Limits
A&B INT
A SOURCE
VERT MODE
INT
PROCEDURE STEPS
1. Check/Adjust Power Supply DC Levels (R938)
NOTE
Power
Test
Reading
Supply
Point
(V)
-8 .6 V
TP961
-8 .5 6 to -8 .6 4
+ 5.0 V
W968
+ 4.85 to +5.15
+ 8.6 V
W960
+ 8.43 to +8.77
+30 V
W956
+ 29.1 to +30.9
+ 100 V
W954
+97.0 to +103.0
Review the information at the beginning of the Adjust
ment Procedure before starting this step.
e. Disconnect the test equipment from the instrument.
5-4
REV JAN 1985
Содержание 2236
Страница 10: ...2236 Service viii The 2236 Oscilloscope ...
Страница 28: ...Specification 2236 Service 1 18 ADD JAN 1985 Figure 1 2 Physical dimensions of the 2236 Oscilloscope ...
Страница 74: ...Theory of Operation 2236 Service 3 30 ...
Страница 75: ...Theory of Operation 2236 Service Figure 3 13 Typical waveforms for the Delta Time function with Valt HI 3 31 ...
Страница 102: ...Performance Check Procedure 2236 Service 4 21 Figure 4 1 Test setup for DMM common mode check ...
Страница 240: ...2236 Service CTM INTERFACE SIGNALS F ig u re 9 4 O s c illo s c o p e b a sic b lo c k diag ram 4294 46 ...
Страница 241: ... VERT DEFL 2236 Service 4 2 0 6 3 5 4 2 0 4 4 7 F ig u re 9 5 O scillo sco p e d e ta ile d b lo c k diag ram ...
Страница 242: ...2236 Service 4204 34 Figure 9 6 CTM basic block diagram ...
Страница 243: ...DMM POWER S U P P LIE S 2236 Service F ig u re 9 7 C T M d e ta ile d b lo c k diag ram ...
Страница 253: ...A10 COUNTER TIMER MULTIMETER BOARD F ig u re 9 8 C irc u it b o a rd lo c a tio n Illu s tra tio n ...
Страница 254: ...S I 0 O I 5 1 S O i 4204 21 C IR C U IT BOARD INTERCONNECTIONS ...
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Страница 319: ...2236 Service TROUBLESHOOTING GUIDE 4206 99 4204 69A ...
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