113MAINTENANCE15 Troubleshooting If your transceiver seems to be malfunctioning, please checkthe following points before sending it to a service center.PROBLEM POSSIBLE CAUSE SOLUTION REF.Does not turn on.No sound comes from thespeaker.Sensitivity is low and onlystrong signals are audible.No contact possible withanother station.Repeater cannot be ac-cessed.Frequency cannot be set.Some memory channelscannot be selected via thetuning dial.• Power connector has a poor contact.• Polarity of the power connection is reversed.• Blown fuse.• Volume is too low.• Squelch is set too high.• A selective call or squelch function is activatedsuch as pocket beep or tone squelch.• Antenna feedline or the antenna connector has apoor contact or is short circuited.• Squelch attenuator function is activated.• The other station is using tone squelch.• The transceiver is set to duplex.• Wrong offset frequency is programmed.• Wrong subaudible tone frequency is programmed.• The frequency lock function is activated.• Priority watch is paused on the watching frequency.• The memory channel number has not yet beenprogrammed.• Check the connector pins.• Re-connect the power cable observing the properpolarity. Replace the fuse if damaged.• Check the cause, then replace the fuse.• Set the volume to a suitable level.• Set the squelch level to the threshold.• Turn the appropriate function OFF.• Check, and if necessary, replace the feedline or sol-der the antenna connector again.• Set squelch between 10–12 o’clock position (appli-cation) or 12 to 19 level (RC-24).• Turn the tone squelch function ON.• Set to simplex.• Correct the offset frequency.• Correct the subaudible tone frequency.• Turn the function OFF.• Cancel the watch.• Program the memory channel.—pgs. 15,114p. 114p. 34p. 33pgs. 92to 99pgs. 13,14p. 33p. 92pgs. 57, 58p. 60p. 59p. 38pgs. 90,91pgs.74–76

supplied accessories

panel description

I Rear panel

I Microphones (HM-118N)

I Remote controller (RC-24; Optional for some versions)

I Unpacking

I Power supply connections

I Microphone and speaker connections

I Connecting a PC

I COM port conﬁrmation

I Preparation

I Squelch level adjustment (FM mode only)

I Audio level adjustment

I Setting a frequency

basic operation

I Tuning step selection

I Operating mode selection

I Your call sign setting

I Station/Repeater call sign setting

I FM mode operation

I When receiving a Digital call

I Short message function

I Monitor function

I General

I Accessing an FM repeater

I Repeater tone frequency setting

I Offset frequency setting

I Accessing a Digital repeater

I Precaution

I Internet access

I Data transferring

I Low-speed data communication

i general description

i call channel selection

main screen

memory channel screen

I Memory clearing

I Programming memory name

scan operation

I Scan start/stop

I Skip channel setting

i scan resume condition

priority watch

I Pocket beep operation

I Tone/Digital code/call sign squelch operation

other functions

I EMR mode operation

I Break-in communication

I S-meter squelch

troubleshooting

i fuse replacement

specifications and options

Icom ID-1 Instruction Manual

ID-1

explicit definitions

PANEL DESCRIPTION

Rear panel

Mcrophone

function display

Unpackng

installation and connections

power supply connections

DRIVER INSTALLATION

APPLICATION INSTALLATION

BASIC OPERATION

Squelch level adjustment (FM mode only)

VFO and memory mode

Tunng step selecton

tuning step selection

lock function

CALL SIGN SETTING

TRANSMIT AND RECEIVE— VOICE

when calling the desired station

Dgtal voce mode operaton

Montor functon

REPEATER OPERATION— VOICE

General

repeater tone frequency setting

offset frequency

DATA OPERATION

internet access

Low-speed data communcaton

general description

call channel selection

memory clearing

Memory name ndcaton

Scan types

Scan start/stop

skip channel setting

Set mode

pocket beep operation

standby beep

auto repeater

EMR mode operaton

S-meter squelch

CPU reset

fuse replacement

RC-24

MAIN UNIT

LOGIC-1 UNIT

transmitter circuits

PLL CIRCUITS

POWER SUPPLY CIRCUITS

PORT ALLOCATION

PREPARATION

PLL AND CODEC ADJUSTMENT

TRANSMITTER ADJUSTMENT

RECEIVER ADJUSTMENT

main unit

front unit