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This service manual describes the latest service information 
for the HM-169/HM-174 SPEAKER MICROPHONE and 
HM-170GP

/

HM-175GPS GPS SPEAKER MICROPHONE 

at the time of publication.

To upgrade quality, any electrical or mechanical parts and 
internal circuits are subject to change without notice or 
obligation.

MODEL

GPS

HM-169

N/A

HM-174

HM-170GP

Yes

HM-175GPS

Be sure to include the following four points when ordering 
replacement parts:

1. 10-digit Icom parts numbers
2. Component name
3. Equipment model name and unit name
4. Quantity required

<ORDER EXAMPLE>

 

  1110006490 S.IC LMV321IDCKR HM-175GPS  MAIN-A 

UNIT 1 

piece

Addresses are provided on the inside back cover for your 
convenience.

Icom, Icom Inc. and 

 logo are registered trademarks of Icom Incorporated (Japan) in the United States, the United 

Kingdom, Germany, France, Spain, Russia and/or other countries.

ORDERING PARTS

1.  Make sure the problem is internal before disassembling 

the speaker microphone.

2. 

DO NOT

 open the speaker microphone until the 

transceiver is disconnected from its power source.

3. 

DO NOT

 force any of the variable components. Turn 

them slowly and smoothly.

4. 

DO NOT

 short any circuits or electronic parts. An 

insulated tuning tool 

MUST

 be used for all adjustments.

5. 

DO NOT

 keep power ON for a long time when the 

speaker microphone is defective.

6. 

READ

 the instructions of test equipment throughly 

before connecting a test equipment to the speaker 
microphone.

REPAIR NOTES

INTRODUCTION

(HM-175GPS)

UNIT ABBREVIATIONS:

 SW=SW 

UNIT

 M=MAIN-A/B 

UNIT

Содержание HM-169

Страница 1: ...S 14421XZ C1 Dec 2007 GPS SPEAKER MICROPHONE SPEAKER MICROPHONE ...

Страница 2: ...ack cover for your convenience Icom Icom Inc and logo are registered trademarks of Icom Incorporated Japan in the United States the United Kingdom Germany France Spain Russia and or other countries ORDERING PARTS 1 Make sure the problem is internal before disassembling the speaker microphone 2 DO NOT open the speaker microphone until the transceiver is disconnected from its power source 3 DO NOT f...

Страница 3: ...CONTENTS SECTION 1 SPECIFICATIONS SECTION 2 ELECTRICAL PARTS LIST SECTION 3 MECHANICAL PARTS LIST SECTION 4 EXPLOADED VIEW SECTION 5 BOARD LAYOUTS SECTION 6 BLOCK DIAGRAM SECTION 7 VOLTAGE DIAGRAMS ...

Страница 4: ...HM 170GP HM 175GPS 62 W 105 H 40 D mm 2 7 16 W 4 1 8 H 1 9 16 D in Curly cable length 300 mm 20 mm 11 13 16 in 2 32 in Operating temperature range 30 C to 60 C 22 F to 140 F Weight approx HM 169 HM 174 200 g 7 17 32 oz HM 170GP HM 175GPS 220 g 7 3 4 oz Speaker impedance 8 Ω Rated output 1 W at 5 distortion 2 W at maximum M GPS RECEIVER Time to first fix TTFF open space Cold start 40 sec typical Wo...

Страница 5: ...only T 14 6 47 9 Q3 1530002851 S TR 2SC4116 BL TE85R F T 14 6 42 7 Q4 1590001170 S TR XP1501 TX HM 175GPS only B 22 9 53 Q5 1550000140 S FET CPH6316 TL E T 16 1 20 Q6 1590003230 S TR UNR9113J TX HM 175GPS only T 17 48 D1 1730002320 S ZEN MA8051 M TX HM 170GP only B 31 9 22 1 D4 1790001250 S DIO MA2S111 TX B 24 3 24 9 D5 1750001110 S DIO SM240A T T 9 5 20 D6 1790001250 S DIO MA2S111 TX HM 170GP onl...

Страница 6: ...28 8 50 7 C32 4030017330 S CER ECJ0EF1C104Z HM 175GPS only B 25 1 46 6 C33 4030017330 S CER ECJ0EF1C104Z HM 175GPS only B 32 3 48 C43 4030017730 S CER ECJ0EB1E471K HM 170GP only T 22 5 11 8 C44 4030017730 S CER ECJ0EB1E471K HM 170GP only T 24 3 11 8 C50 4550007310 S TAN F930J227MNMBMA B 10 9 27 7 C51 4030017490 S CER C1608 JB 1A 105K T T 17 2 17 6 C52 4550007310 S TAN F930J227MNMBMA B 8 1 35 3 C53...

Страница 7: ...40 O RING BX HM 170GP HM 175GPS only 1 MP10 8930073760 3065 PTT PLATE 1 MP11 8930073830 3065 ANT PLATE HM 170GP HM 175GPS only 1 MP12 8930073770 3065 TOP PLATE HM 170GP HM 175GPS only 1 MP13 8930073780 3065 BUSH PLATE 1 MP14 8930073690 3065 SPRING 1 MP15 8930073960 3065 BELT CLIP 1 MP16 8930073610 SP NET D 1 MP17 8930068980 2905 VENT SHEET 2 MP20 8930055920 INSULATION SHEET GQ 1 MP21 8810009561 SC...

Страница 8: ... MP16 MP17 MP17 MP20 MP25 MP25 MP24 MP24 MP24 MP24 MP23 MP23 MP3 MP6 MC1 M MP21 MP21 MP21 MP21 J1 SW MP13 W3 MP11 MP22 MP22 MP15 MP12 MP10 MP14 MP7 SW UNIT MP8 MAIN UNIT MP4 MP9 MP2 MP5 MP1 HM 169 HM 174 EP1 SECTION 4 EXPLOADED VIEW ...

Страница 9: ...0 C28 C29 C43 C44 C51 C54 C55 C57 C58 C59 D5 D7 IC2 IC8 IC14 J1 J2 L1 L2 L3 L4 L5 MP1 Q3 Q5 Q6 R4 R5 R6 R7 R8 R12 R21 R22 R23 R25 R41 R42 R53 R55 R56 R57 R59 R60 S1 B6796D MC1 H0 H5 H10 H15 H20 H25 H30 H35 H40 V0 V5 V10 V15 V20 V25 V30 V35 V40 V45 V50 V55 DS1 R1 B6861B H0 H5 H10 H15 V0 V5 MAIN A UNIT for HM 169 HM 174 TOP VIEW GND SW 3 3V LED GND SW 3 3V LED SW UNIT for HM 170GP HM 175GPS only TOP...

Страница 10: ...5 J6 Q4 R9 R13 R14 R16 R16 R17 R19 R24 R26 R27 R28 R29 R37 R43 R44 R47 R48 R50 R51 R58 R61 R62 H0 H5 H10 H15 H20 H25 H30 H35 H40 V0 V5 V10 V15 V20 V25 V30 V35 V40 V45 V50 V55 J1 S2 H0 H5 H10 H15 V0 V5 MAIN A UNIT for HM 169 HM 174 BOTTOM VIEW GND SW 3 3V LED GND MIC MC1 SP1 CHASSIS W1 CHASSIS MICG SW 3 3V LED SW SW UNIT for HM 170GP HM 175GPS only BOTTOM VIEW MAIN B UNIT for HM 170GP HM 175GPS BOT...

Страница 11: ...AGRAMS 1 2 3 4 5 6 7 8 MIC AMP 150K MIC GND MUTE MICROPHONE PTT IC2 IC3 Q3 HM 169 HM 174 MIC PTT SPEAKER SP Vcc SP REG IC1 3 6V HM 169 HM 174 HM 169 HM 169 HM 174 N C SP GND MIC SP Vcc SENS N C MAIN A UNIT for HM 169 HM 174 ...

Страница 12: ...rial Serial D4 IC13 IC6 NMEA LEVEL SHIFTER D6 HM 170GP 3 3V RESET PPS IC4 LED DRIVER 3 3V Q4 DS1 SW1 SW UNIT HM 175GPS GPS ON OFF Sleep HM 175GPS IC11 IC9 IC10 HM 175GPS HM 175GPS HM 175GPS HM 175GPS HM 170GP CHASSIS UNIT MIC MUTE IC14 Q6 HM 175GPS PTT SW1 SW UNIT HM 170GP HM 170GP HM 175GPS HM 175GPS HM 170GP NMEA SP Vcc SP SENS GND MIC nc 6 2 MAIN B UNIT for HM 170GP HM 175GPS ...

Страница 13: ... AM 627P MC1 100 R17 0 R13 10 C8 0 1 C6 1 C9 10 C3 ERTJ0EP473J R19 0 068 C2 S 812C36AMC IC1 1 GND 2 VIN 3 VOUT 4 NC 5 NC 47K R7 3 3K R1 10K R6 680 R8 470K R20 100 R5 0 0022 C7 470P C23 TC7S66FU IC3 1 2 3 4 5 10K R21 0 R22 150K R16 UNR9113J Q3 0 01 C24 0 R23 SKQJLBA010 S1 MICROPHONE MIC SW PTT XRXD SP Vcc GND PTT D_GND SP To SPEAKER HM 174 HM 169 HM 169 HM 174 HM 169 HM 169 HM 174 HM 174 HM 174 04 ...

Страница 14: ...8521F33MC IC8 1 ON OFF 2 VSS 3 VOUT 4 EXT 5 VIN 0 R48 LMV321IDCK IC2 1 2 3 4 5 SN74AHC1G04DCK IC13 1 2 3 4 5 SN74LVC1G38DCK IC6 1 2 3 4 5 B8B ZR SM4 TF J1 1 2 3 4 5 6 7 8 9 10 SLF6025T 330M 33U L3 0 R50 0 R51 10U L5 220 C50 1 C51 1 C54 10 C53 220 C52 33K R4 0 1 C19 AM 627P MC 1 MA2S111 D4 M A2S111 D6 10K R47 S02B EH S J2 1 2 0 0022 C4 0 1 C5 1 C16 ERTJ0EP473J R55 4 7K R19 4 7K R17 0 1 C55 220 C57 ...

Страница 15: ...Glenwood Centre 150 6165 Highway 17 Delta B C V4K 5B8 Canada Phone 1 604 952 4266 Fax 1 604 952 0090 URL http www icomcanada com E mail info icomcanada com Unit 1 103 Garden Road Clayton VIC 3168 Australia Phone 61 03 9549 7500 Fax 61 03 9549 7505 URL http www icom net au E mail sales icom net au 146A Harris Road East Tamaki Auckland New Zealand Phone 64 09 274 4062 Fax 64 09 274 4708 URL http www...

Страница 16: ...1 1 32 Kamiminami Hirano ku Osaka 547 0003 Japan S 14421XZ C1 2007 Icom Inc ...

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