Wavetek 171 - Page 31

FREQ
OR
PURITY
ON ONE
OR
MORE
RANGES BAD
SELECT
A
BAD
RANGE
CHECK
TPSON
GEN BD
NO
REPLACE
IC10
GENERATOR
PHASE
LOCK
LOOP CHECK
(GENERATOR
BOARD)
SYNTHESIZER MODE
OUTPUT
BAD
SYNTHESIZER
LOOP
OK
FREQ
OR
PURITY
ON
ALL
RANGES
BAD
FREQ
OR
<
PURITY
ATTPS
ON
SYNTH
BO
BA
?
NO
CHECK
FREQUENCY
RANGING
(SHEET4)
NO
CHECK
COAX
SET
MODE SWITCH
1--------------
TO
SYNTH
MODE
CHECK
SYNTHESIZER
LOOP
ISHEET21
COMPLETE
STEPS
12-
14
OF
CALIBRATION
PROCEDURE
CHECK
ICl.
9
CIRCUITS
&
SWl-D
ON GEN
BO
NO
1-20
MHz
PROPORTIONAL
<io
DIGITAL
SW
SETTIN
ATPIN
11
IC14
........
·~
?
CHECK
SYNTHESIZER LOOP
{SHEET2l
Figure 6-4. Synthesizer Mode Checks
(Sheet
5
of
6)
YES
...
CHECK
FN
(SHEET
1)
v
FN
GOOD
,,
CHECK
COAX
&
MODE
SELECTOR
SW
(S1.
FRONT
PANELi
6-11