TR-800 Service Manual
72
4. Low/unstable/no
output power from
the Transmit radio
(master/slave).
4a. Loose RF cable connector(s).
4b. Damaged antenna or feed line.
4c. Damaged duplexer (if
applicable).
4d. Excessive power supply current
drain.
4a. Tighten the RF cable connectors to
the radios, duplexer and antenna.
4b. Replace the faulty component.
4c. Check:
* Tuning of the duplexer
* Tightness of the locking nuts on the
tuning screws.
Replace the duplexer if it is correctly
tuned and nuts are properly secured.
4d. Disconnect components, one at a
time, to locate faulty piece. Replace
the faulty piece.
Disassembly and Assembly for Repair
Removing and Attaching the Top Cover
1. Use a screwdriver to remove the seven screws (M3.0X6.0) that lock the top cover of
①
the repeater.
See Figure 1.
2. Remove the top cover
②
. See Figure 1.
3. Attach the top cover with reverse steps.
Figure 1
Removing and Attaching the Front Panel
1.
Press the six latches that lock the front panel to the housing to separate and remove them from the
housing
①
. See Figure 2.
2.
Remove the front panel shown
②
in Figure 2, and pull out the two mobile radio FPCs, two signal
cable connectors, one expansion signal cable connector, and one cable of DC power LED.
2
1
1
1
1
1
1
1
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