User's Manual

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5.17 XMTR REMOVAL AND REPLACEMENT
Use this procedure to remove and replace the UD-35( ) XMTR and/or Capacity Key and
Crystal Oscillator Subboards on the XMTR.
Spare XMTRs and XMTRs repaired at the factory normally do not con-
tain Crystal Oscillator Subboards or Capacity Keys. The user must retain
the crystal Oscillator Subboard and the Capacity Key from the module
being replaced before sending the module back to the factory for repair.
a On power supply, on same side as failed XMTR, set PA ON/OFF switch to
OFF (if shelf is equipped with PA on that side).
b On XMTR module, disconnect cable from RF OUT connector.
c Remove XMTR module from card cage.
d On XMTR module being replaced, remove XMTR crystal oscillator
subboard. See
Figure 5 - 15. Retain for installation on replacement
module.
e On XMTR module being replaced, remove XMTR capacity key. See
Figure 5 - 16. Retain for installation on replacement module.
f On replacement XMTR module, install XMTR crystal oscillator subboard.
See
Figure 5 - 15.
g On replacement XMTR module, install XMTR capacity key. See Figure 5 - 16.
h Reconnect cable to RF OUT connector.
i Install replacement XMTR module in card cage.
Note