32SET MODE8 Set mode programmingSet mode is used to change the conditions of the trans-ceiver’s functions: Scan type, Scan resume timer, Weatheralert, Dual/Tri-watch, DSC watch, Beep tone, LCD backlight,LCD contrast, Auto acknowledgement and Radio power.*Available functions may differ depending on dealer setting.q Turn power OFF.w While pushing [16•9 ], turn power ON to enter Set mode.• “ ” appears at the channel comment indicator.e After the display appears, release [16•9 ].r Push [16•9 ] to select the desired item, if necessary.t Push [Y] or [Z] to select the desired condition of the item.y Turn power OFF, then ON again to exit Set mode.*Available only when optional HM-157 is connected. Set mode itemsD Scan typeThe transceiver has 2 scan types: Normal scan and Priorityscan. Normal scan searches all TAG channels in the selectedchannel group. Priority scan searches all TAG channels in se-quence while monitoring Channel 16.DD Scan resume timerThe scan resume timer can be selected as a pause (OFF) ortimer scan (ON). When OFF is selected, the scan pausesuntil the signal disappears. When ON is selected, the scanpauses 5 sec. and resumes even if a signal has been re-ceived on any other channel than Channel 16.Scan timer OFF (default) Scan timer ONNormal scan (default) Priority scanD SET MODE CONSTRUCTION: Push• Scan type“ ”• DSC watch“ ”• Dual/Tri-watch“ ”• Weather alert“ ”• Scan resume timer“ ”• Beep tone“ ”• Radio PWR*“ ”• Auto ACK“ ”• Contrast“ ”• Backlight“ ”Starting item

OPERATING RULES

panel description

I Microphone

I Function display

basic operation

I Receiving and transmitting

I Call channel programming

I Channel comments

scan operation

I Setting TAG channels

I Operation

I MMSI code check

I DSC Address ID

i position indication

i distress call

I Transmitting DSC calls

dsc operation

transmitting a group call

transmitting an all ships call

I Receiving DSC calls

receiving a group call

other functions

I Public Address (PA) function

I Set mode items

set mode

I Fuse replacement

I Optional MB-69 installation

TROUBLESHOOTING

SPECIFICATIONS AND OPTIONS

i panel description

I Channel selection

I Lock functions

I Display backlight

I Starting a scan

I Set mode programming

I Intercom operation

I HM-157 supplied accessories

I Installation

CHANNEL LIST

TEMPLATE

Icom IC-M422 Instruction Manual

IC-M422

MAIN UNIT

LOGIC BOARD

TRANSMITTER CIRCUITS

PLL CIRCUITS

POWER SUPPLY CIRCUITS

PREPARATION

FREQUENCY ADJUSTMENT

TRANSMIT ADJUSTMENT

RECEIVE ADJUSTMENT

front unit

SQL BOARD

MECHANICAL PARTS AND DISASSEMBLY

VOLTAGE DIAGRAM