Wavetek 193 Instruction Manual page 68

CHECK
U13 R34,
R35, R39
REMOVE
SHORT
U13 PIN 3
REFER TO
MODULATION
GENERATOR
LOOP (01, 02)
6.6.2
YES NO
REMOVE ± 2.5V
TRIANGLE AND
INSTALL R46
NO
YES NO
6-20
REFER TO
MODULATION
GENERATOR
LOOP (U13)
6.6.2
REMOVE
SHORT
'U13 PIN 3
Figure 6·24. Oscillator Loop Failure
REFER TO
AMPLITUDE
MODULATOR
6.6.6
CHECK U1
ANDU2
REFER TO
TABLE 6-17
YES
CHECK
CR13
CHECK
U10
CHECK MODE
SWITCH
(SWEEP/MOD
BOARD)
SW3-C
r-::I
L:_j
NO
YES NO
SWEEP/MOD BOARD
YES