R&S 4200 Series - Page 175

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