TM 11-6625-441-34
Figure 3-2. Test Set, Radio TS-1588/AIC, lower front panel, parts location
Table 3-2. Troubleshooting of Test Set, Radio TS-1588A/AIC.
Corrective action
Probable cause
Malfunction
Power source not being received by
Check power source connections.
1. OPERATE lamp 11 fails to light
interphone test set,
when POWER-OFF switch S7 is
Replace lamp.
in POWER position.
OPERATE lamp 11
Replace lampholder,
Lampholder
Replace fuse.
Fuse F1
Replace switch.
Switch S7
Replace relay.
Relay K1
Repair or replace wiring.
Wiring
Receptacle J8
Replace receptacle.
2. SELF TEST lamp 12 fails to light
Connector PI
Repair or replace connector.
and OPERATE lamp 13 fails to
Replace relay.
Relay K1
go out when SELF TEST
Wiring
Repair or replace wiring.
RECEPTACLE J8 is mated with
Lamp 12
Replace lamp.
test cable connector P1.
Lamp holder
Replace lampholder.
Lamp 13
Replace lamp.
3. KEY ON lamp 13 fails to light
Lampholder
Replace lampholder.
when KEYING switch S1 is held
Switch S1
in either RADIO or INTER, with
Replace switch.
Switches S2, S3, and S5
Replace switch.
RECEIVER SEL switch S4 in
Wiring
OFF, TRANSMITTER SEL
Repair or replace wiring.
switch S5 in 1, and both INPUT
SEL switch S3 and OUTPUT
SEL switch S2 in R.
3-5
