Wavetek 180 Instruction Manual page 21

SWEEP CHECK
r
CHECK Q9 - 14.
CR6,7 & IC3
<
CIRCUIT
<
FREQUENCY
WILL NOT
SWEEP
SWEEP AT
SWEEP OUT
BNC
SUM OF DIAL
VCG IN & SWEEP
EXCEEDING
OVERRANGE
LIMIT ('^50%l
YES
ILLEGAL
OPERATION
^O
CHECK
R34& SW3
VCG
VCG IN DOES NOT \
CHANGE FREQUENCYj
SUM OF DIAL,
VCG IN & SWEEP
EXCEEDING
OVERRANGE
LIMIT (^50%)
NO
CHECK
E12, 13
WIRING
ILLEGAL
OPERATION
GCV
CHECK
Q16
CIRCUIT
GCV OUT
BAD
TTL
COAX
E21,22
OK
SYNC
YES
REPLACE
> ^
ICS
Figure 6-1. Troubleshooting Chart (Sheet 4 of 4)
6-5