TM 11-6625-2638-30
Table 2-3. Test Set Troubleshooting - Continued
STEP
PROCEDURE
NORMAL INDICATION
ABNORMAL INDICATION
CORRECTIVE ACTION
19
Set MOTOR POWER switch to OFF.
0 vdc.
Continuity check wires and S19 (para 2-12).
20
a. Connect oscilloscope to test set as follows.
b. Set oscilloscope controls as follows:
Channel A (CH A) = 10 volts per division (10 V/DIV).
Channel B (CH B) = 20 volts per division (20 V/DIV).
CH A and CH B 0.0 vdc reference = the center grid line.
Slope +
Sync on CH A
Horizontal time base: 0.5 msec/division (initial) then 50 sec division.
CH A less than 50v p-p.
Clock wiring (para 2-12).
CH B less than 80v p-p.
Check wiring (para 2-12).
2-9
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