R&S 4200 Series Operating Manual page 175

Troubleshooting
Code Message
0305 PA DC 28V
UNDERVOLT
0306 TX DC 1.2V FAIL
0307 TX DC 1.8V FAIL
0308 TX DC 5.7V FAIL
0309 TX DC 8.7V FAIL
0310 TX DC 28V X7 FAIL
0311 TX DC 28V PTT FAIL
0312 TX DC –48V PTT
FAIL
0313 TX DC –11V FAIL
0314 TX DC –5.7V FAIL
0315 TX INT REF UNLOCK
0316 TX SYNTH UNLOCK
Level Config
E – DC voltage on the PA
board is less than 19 V.
Transmitter is switched
E – DC regulator 1.2 V on
the TX module is
beyond limit.
E – DC regulator 1.8 V on
the TX module is
beyond limit.
E – DC regulator 5.7 V on
the TX module is
beyond limit.
E – DC regulator 8.7 V on
the TX module is
beyond limit.
E – Internal secondary
voltage 28 V on the TX
module is under 19 V.
E – PTT DC regulator 28 V
on the TX module is
beyond limit.
E – PTT DC regulator
–48 V on the TX
module is over –16 V.
E – DC regulator –11 V on
the TX module is
beyond limit.
E – DC regulator –5.7 V on
TX module is beyond
limit –5.7 V ± 400 mV.
E – Internal reference
E – Synthesizer unlocks.
Transmission is
4.9
Note
Check DC voltage on X2
(battery may be
off.
If this fails to eliminate
the fault, send the radio
Send the radio to service.
Send the radio to service.
Send the radio to service.
Send the radio to service.
Check connected
equipment on X7.1/2.
Check the voltage; a
short circuit may have
If this fails to eliminate
the fault, send radio to
Send the radio to service.
Send the radio to service.
Send the radio to service.
Send the radio to service.
Send the radio to service.
unlocks.
Send the radio to service.
blocked.
R&S XU 4200
Action
discharged).
to service.
occurred.
service.
6166.5368.02.01