HF-SSB Micom
–
500E-A
11
500W TRANSCEIVER MODEL COMPLEMENTS
M81AMN0KV5AK *
MICOM-2ET
FDN6144A
Amplifier 500 watts
FPN5585A
Power supply
FRN5865A
Junction box
01MB000027
Cables
01MB000029
Chassis
01MB000030
Miscellaneous
FMN1615A
Microphone
*
NOTE
:
LORD No-FLN3179A
HIGH POWER N
o-
FLN3180A
with interface modification for 500w amplifier
TROUBLE SHOOTING
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
ADVICE
VOLT trip off-line
Ensure power supply maintains voltage greater than 11.0VDC
under load
. Check DC cable connections.
VSWR trip off-line
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.
Amp TEMP led is on.
Reduce drive level or duty-cycle. Ensure fan unit is
operating properly.
No PTT Keying
Ensure transceiver, amplifier and DC supply all utilized a
common ground.
