HP 4328A - 4328 A Overall Troubleshootmg

TABLE 8-1
4328A OVERALL TROUBLESHOOTING
CHECK CALIBRATION
USE YEW TYPE 2782
AND
YEW TYPE 2786
OR GR MODEL 1432T
CHECK lliSTRUMENT
-OK---- ELECTRICAL L. OK- FUNCTIONS
BAD-
ZERO PROPERLY
CHECK AND
BAD -
ADJUST A2R228
WON'T CALIBRATE
1-------- OK--------- CHECK WAVEFORMS ----1
METER DEFLECTS,_ RECALIBRATE
CALIBRATION BAD
CHECK FUSE,
BATTERY
1--- NO DEFLECTION- POWER SUPPLY---t
(+13V, -13V
NOMINALLY)
A3T.P .. 4, 5
A30 0
CHECK
BAD-POWER SUPPLY
TABLE 8-9
OR 8-10
OK
CHI
A2 ~
A2
OK
CHECKWAVEFORMS_L
OK-A3 T P 4, 5 BAD•
METER GOES TO CHECK FOR
....._ ___ EVEN IF -OPEN PROBES--~
PROBES SHORTED (AND T302)
A30 0
REPAIR OR
BAD- REPLACE
PROBE
(AND T302)
CHECK WAVEFORMS
OK- A3 T P 4, 5
A30 0
OK-
BAD·