HP 212A - Page 25

Replace VL05,
Check maximum delay and
'ZeroJ position of control.
V1
C135, C138 Replace def ec Live capacito~ in delay line.
Replace V1.
V 1
v2
V6
RELAY
22
L3
V 104
V3 may effect the very small spike on top
of leading edge.
V9 may effect the 1/2 to 1 microsecond
hump on tap following leading edge.
C31 may be as high as 30 pCLf to reduce
various forms of overshoot.
Replace V1.
Replace V2.
Check V6.
Clean contacts on relay RL-I.
Replace L2. )
) Not likely to occur
Replace L3. )
Check pulse rate calibration, may be free
running at very high rate.