Ac Amplifier P/0 A2; Phase Detector And Dc Amplifier P/0 A2 Troubleshooting - HP 4328A Operating And Service Manual

Model 4328A
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TABLE 8-6
AC AMPLIFIER P/0 A2 TROUBLESHOOTING
CHECK WAVEFORM
A2 T. P 7
TABLE 8-7
CHECK DC LEVELS
OK- OF Q202, Q203,
- - - 1
Q204
CHECK CONNECTOR
BAD A3 (9, K), C308,
-T303, C201, T201,
C202
CHECK WAVEFORM
A2T.P.10
O K - A 2 8
AND DC LEVEL
OF Q205
REPLACE
BAD-FAULTY
COMPONENTS
PHASE DETECTOR AND DC AMPLIFIER P/0 A2 TROUBLESHOOTING
CHECK WAVEFORM
A2 T. P. 10
BAD-RETURN TO
TABLE 8-6
CHECK WAVEFORM
OK- A2, T. P 11
A 2 .
CHECK WAVEFORMS
OK-A2T P. 12, 13
A 2 •
8
CHECK C210
BAD- AND CONNECTION