User's Manual

5-34
Chart 4 XMTR Removal and Replacement
XMTR Crystals should never be shipped as replacements without
being soldered and tuned up in an oscillator assembly board at the
factory.
PURPOSE
Use this procedure to remove and replace UD-35( ) XMTR and/or:
1 to replace a faulty crystal oscillator subboard
2 to change out the crystal oscillator subboard to change frequency
3 to move oscillator to a replacement XMTR
4 to replace a faulty capacity key
5 to change DS1/E1 or DS3 capacity
6 to move capacity key to a replacement XMTR
SPECIAL TOOLS REQUIRED
None
STEP PROCEDURE
This is an out-of-service procedure when on a nonstandby (unpro-
tected) system. On a hot-standby or frequency diversity system,
switch traffic on the channel under test to protect.
CAUTION
Possibility of
Service
Interruption
WARNING
Possibility of
Damage
to Equipment