STROBE
ENABLE
DISABLE
LED
INDICATORS
LEVEL
ADJUSTMENT
SLIDE SWITCH
Yes
clipleads and
probes used
during this
procedure
[21] Remove all
ALIGN 39B OSCILLATOR USING OPEN LOOP METHOD
oscillator level by
connecting scope probe
between 1.8 volts
and 2.0 volts
peak-to-peak
No
[18] Recheck 39B
[19] Is waveform
of chain being tested,
adjust potentiometer to
measure 1.9 volts peak-to-
adjustment cover
[20] Remove level adjustment
with clock chain removed
FB214
pack associated
cover from front left side
peak, and replace level
to terminal 018 of
from service [TABLE B,
Page 1]
Figure 1 — 39B Oscillator
of 39B oscillator [Figure 1]
DLP
PAGE 3 of 3
234-151-013
527
Issue 8
DEC 1995
