Rohde & Schwarz SU 4200 - Page 109

Troubleshooting R&S SU 4200
4.7 6125.0226.12.01
Code Message Level Config Note Action
0304 PA DC 28V
OVERVOLT
E – DC voltage on PA
board is more than
32 V.
Check the DC voltage
on X2; normally the
voltage must never be
more than 32 V (this is
the final charging
voltage of the 28 V lead
battery).
If this fails to eliminate
the fault, send radio to
service.
0305 PA DC 28V
UNDERVOLT
E – DC voltage on 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 radio to
service.
0306 TX DC 1.2V FAIL E – DC regulator 1.2 V on
TX board beyond limit.
Send radio to service.
0307 TX DC 1.8V FAIL E – DC regulator 1.8 V on
TX board beyond limit.
Send radio to service.
0308 TX DC 5.7V FAIL E – DC regulator 5.7 V on
TX board beyond limit.
Send radio to service.
0309 TX DC 8.7V FAIL E – DC regulator 8.7 V on
TX board beyond limit.
Send radio to service.
0310 TX DC 28V X7 FAIL E – Internal secondary
voltage 28 V on TX
board 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 TX board beyond
limit.
Send radio to service.
0312 TX DC –-48V PTT
FAIL
E – PTT DC regulator
–-48 V on TX board
over –-16 V.
Send radio to service.
0313 TX DC –-11V FAIL E – DC regulator –-11 V on
TX board beyond limit.
Send radio to service.
0314 TX DC –-5.7V FAIL E – DC regulator –-5.7 V
on TX board beyond
limit
–-5.7 V ±400 mV.
Send radio to service.
0315 TX INT REF
UNLOCK
E – Internal reference
unlocks.
Send radio to service.