500W Transceiver Model Complements; Trouble Shooting - Motorola HF-SSB MICOM-500E-A G761AA Owner's Manual

500W TRANSCEIVER MODEL COMPLEMENTS

M81AMN0KV5AK *
FDN6144A
FPN5585A
FRN5865A
01MB000027
01MB000029
01MB000030
FMN1615A
*
NOTE:
LORD No-FLN3179A
HIGH POWER N
In case of malfunctioning, perform the following steps (refer to the Maintenance
section in MICOM-2E Owner' s manual, Motorola publication number 6802952C60).
1. Turn OFF and ON the radio switch to reset both the radio and the amplifier.
2. Use BITE when the channel is in SSB mode only
3. Refer to the User Troubleshooting Chart.
4. Follow the troubleshooting procedures in this section, which provide instructions
for isolating faulty boards.
Troubleshooting a board at component level should be performed according to the
notes on the relevant schematic diagram.
FAULT
VOLT trip off-line
VSWR trip off-line
Amp TEMP led is on.
No PTT Keying
MICOM-2ET
Amplifier 500 watts
Power supply
Junction box
Cables
Chassis
Miscellaneous
Microphone
o-
FLN3180A with interface modification for 500w amplifier

TROUBLE SHOOTING

Ensure power supply maintains voltage greater than 11.0VDC
under load. Check DC cable connections.
Check integrity of antenna and feedline connections.
Check for evidence of arc-over or dielectric breakdown
of feedline. Ensure antenna is resonant (<2:1 SWR) at
the desired operating frequency.
Reduce drive level or duty-cycle. Ensure fan unit is
operating properly.
Ensure transceiver, amplifier and DC supply all utilized a
common ground.
11
HF-SSB Micom – 500E-A
ADVICE