which referenced
switch to normal
Rotate
ROS/OFF
No
lamp goes off)
this procedure expect
this unit to remain
out of service
lamp
goes off
PWR OFF
AND
into diagnostic
after depressing
until diagnostic
completes
Yes
ON
switch, wait
Yes
[8] Was
replaced
No
and/or depress and
hold
ON
pushbutton
for 2 seconds
oscillator
ENABLE/DISABLE
switch to
ENABLE
is in NCSU, position each
position (
OS
FB687
pack
used in frame
[9] Is
oscillator being
oscillator used
oscillator used
DRO
[12] Replace removed fuse
[13] If replaced circuit pack
[14] Did procedure
[16] See NOTE 5.
[15] If unit goes
39B oscillator
REPLACE CIRCUIT PACK (EXCEPT FB211 TYPE)
off if TTY message
was used to remove
unit from service
OS
lamp will not go
NOTE 5
[10] Verify
oscillator signal
level - 39B
[11] Verify
oscillator signal
level - DRO
234-151-013
Issue 8
PAGE 3 of 4
DLP
DEC 1995
500
