Yes
No
peak-to-peak
scope probe
from pack
between 1.8 and
2.0 volts
[4] Is waveform
[5] Remove
CLEAR 39B OSCILLATOR LEVEL ERROR PROBLEM
3
166-39
170-37
LOCATION
2
166-33
170-34
AND
TABLE A
CHAIN
PACK
0
1
066-33 066-39
Calibrate scope
chain is out of
service
[3] Connect scope probe
to terminal 018 of
FB214
pack
FB214
[TABLE A]
[1] See CAUTION 1.
Ensure faulty
[2] See CAUTION 2.
070-37
070-34
FB687
FB215
FA628
070-31
070-29 070-42
070-40 170-31
170-29
170-40
170-42
calibration can
affect service
CAUTIONS
2. Improper scope
1. Always remove
NCSU from
service and
disable all
oscillators
before working
on any network
problem
(using
ENABLE/
DISABLE
switch)
TAP
234-151-013
137
Issue 8
DEC 1995
PAGE 1 of 6
