Wavetek 171 - Page 25

"VCG
IN"
DOES
NOT
CHANGE
FREQUENCY
"TTL
SYNC"
BAD
"GCVOUT"
BAD
VCGCHECK
/'-.....
SUM OF
DIAL
VCG
IN
&
SWEEP
EXCEEDING
OVERRAN
GE
LIMIT
{
.....
50%)
?
ILLEGAL
OPERATION
GCVCHECK
TTL
CHECK
COAX
E38,39
OK
?
CHECK
E33,34
WIRING
&
R37
CHECK
011
CIRCUIT
Figure 6-2. Generator Mode
Checks
(Sheet 3 of 3)
REPLACEICS
OR.
IF
TTL
BUFFER
OPTION
INSTALLED,
IC33
ON
SYNTH BD
6-5