S-14421XZ-C1
Dec. 2007
GPS SPEAKER MICROPHONE
SPEAKER MICROPHONE
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
Ye s
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
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
1 - 1
SECTION 1 SPECIFICATIONS
M GENERAL
• Power supply
(Supplied from the connected transceiver)
:
HM-169/HM-170GP 5.0–8.4 V DC
HM-174/HM-175GPS 5 V DC
• Current drain : HM-169/HM-174 4 mA max. (at 5 V)
HM-170GP/HM-175GPS 65 mA max. (at 5 V)
• Dimensions (Projections not included) : HM-169/HM-174 62 (W)×89 (H)×40 (D) mm;
(2
7
/16 (W)×3 1⁄2 (H)×1 9⁄16 (D) in.)
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 1
7
/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
Worm start 36 sec. typical
Hot start 4 sec. typical
All stated specifications are subject to change without notice or obligation.
2 - 1
SECTION 2 ELECTRICAL PARTS LIST
M.=Mounted side (T: Mounted on the Top side, B: Mounted on the Bottom side)
[MAIN-A UNIT] (for HM-169, HM-174)
REF ORDER
DESCRIPTION
M.
H/V
NO. NO.
LOCATION
IC1 1180002690 S.REG S-812C36AMC-C2Q-T2G T 34.1/45.8
IC2 1110006490 S.IC LMV321IDCKR T 28.6/39.9
IC3 1130007021 S.IC TC7S66FU (TE85L,F)
[HM-174] only T 28.7/31.1
Q3 1590003230 S.TR UNR9113J-(TX) [HM-174] only T 31.1/29.7
R1 7030003500 S.RES ERJ3GEYJ 332 V (3.3 k) T 29.5/52.6
R2 7030003320 S.RES ERJ3GEYJ 101 V (100) T 29.5/49.3
R3 7030003620 S.RES ERJ3GEYJ 333 V (33 k) T 28.7/41.8
R4 7030003620 S.RES ERJ3GEYJ 333 V (33 k) T 25.6/41.8
R5 7030003320 S.RES ERJ3GEYJ 101 V (100) T 24.4/39.1
R6 7310004790 S.TRI EVM-3YSX50 B14 (103) B 35.5/48.5
R7 7030003680 S.RES ERJ3GEYJ 104 V (100 k) T 25.6/35.4
R8 7030003420 S.RES ERJ3GEYJ 681 V (680) T 25.6/33
R9 7030003620 S.RES ERJ3GEYJ 333 V (33 k)
[HM-174] only T 25.6/30.6
R13 7030003860 S.RES ERJ3GE JPW V T 30.8/51.4
R14 7030003860 S.RES ERJ3GE JPW V [HM-169] only T 20/29.8
R16 7030003700 S.RES ERJ3GEYJ 154 V (150 k)
[HM-174] only T 20.9/14.8
R17 7030003320 S.RES ERJ3GEYJ 101 V (100) T 29.5/46.1
R19 7510001730 S.TMR ERTJOEP 473J T 25.3/36.6
R20 7030003760 S.RES ERJ3GEYJ 474 V (470 k) T 25.6/37.7
R21 7030003560 S.RES ERJ3GEYJ 103 V (10 k)
[HM-174] only T 28.8/29.1
R22 7030003860 S.RES ERJ3GE JPW V [HM-169] only T 28.5/33
C1 4030006850 S.CER C1608 JB 1H 471K-T T 31.6/54.6
C2 4030012660 S.CER C1608 JB 1E 683K-T T 31.6/53.4
C3 4510008540 S.ELE EEE1CA100SR T 26/51.9
C4 4030006900 S.CER C1608 JB 1H 103K-T T 32/48.7
C5 4030007090 S.CER C1608 CH 1H 470J-T T 26.3/39.9
C6 4030011600 S.CER C1608 JB 1E 104K-T T 37.3/45.2
C7 4030006870 S.CER C1608 JB 1H 222K-T T 25.6/34.2
C8 4510008540 S.ELE EEE1CA100SR T 26/46.5
C9 4030017490 S.CER C1608 JB 1A 105K-T T 25.6/31.8
C10 4030017490 S.CER C1608 JB 1A 105K-T T 35/43.5
C13 4030006850 S.CER C1608 JB 1H 471K-T T 23.4/22
C14 4030006850 S.CER C1608 JB 1H 471K-T T 24.6/25.1
C15 4030006850 S.CER C1608 JB 1H 471K-T T 23.4/20.3
C16 4030006850 S.CER C1608 JB 1H 471K-T T 23.4/18.5
C17 4030006850 S.CER C1608 JB 1H 471K-T T 20.7/17.8
C18 4030006850 S.CER C1608 JB 1H 471K-T
[HM-169] only T 22.2/14.8
C19 4030011600 S.CER C1608 JB 1E 104K-T T 23.5/13.3
C20 4030017490 S.CER C1608 JB 1A 105K-T T 31.6/46.1
C21 4030006850 S.CER C1608 JB 1H 471K-T T 11.4/31.7
C23 4030006850 S.CER C1608 JB 1H 471K-T T 28.7/43.6
J1 6510019421 S.CNR B8B-ZR-SM4-TF (LF) (SN) T 29.6/17.8
MC1 7700002770 MIC AM-627P-462C33-1
S1 2260000980 SW SKHHLP014A
EP1 6910012350 S.BEA MMZ1608Y 102BT T 28.7/55.3
S.=Surface mount
[MAIN-B UNIT] (for HM-170GP, HM-175GPS)
REF ORDER
DESCRIPTION
M.
H/V
NO. NO.
LOCATION
IC2 1110006490 S.IC LMV321IDCKR T 18.3/42.6
IC4 1190002580 S.IC ITRAX03-S B 30.5/35.5
IC6 1130014070 S.IC SN74LVC1G38DCKR B 28.7/24.1
IC8 1190002620 S.IC S-8521F33MC-BPST2G T 8.2/23.5
IC9 1130007431 S.IC TC7S14FU (TE85R,F)
[HM-175GPS] only B 23.2/47.8
IC10 1130007261 S.IC TC7W74FU (TE12L,F)
[HM-175GPS] only B 26.6/50.3
IC11 1110005731 S.IC S-80928CNMC-G8Y-G
[HM-175GPS] only B 31.2/50.2
IC13 1130012600 S.IC SN74AHC1G04DCKR B 28.7/21.2
IC14 1130007021 S.IC TC7S66FU (TE85L,F)
[HM-175GPS] 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] only B 25.4/19.2
D7 1790001240 S.DIO MA2S728-(TX) [HM-175GPS] only T 15.5/50.3
L1 6200003960 S.COL MLF1608A 1R0K-T T 24.5/18.6
L2 6200003960 S.COL MLF1608A 1R0K-T T 23.7/16
L3 6200013250 S.COL SLF6025T-330MR59-PF T 14.5/25.7
L4 6200003960 S.COL MLF1608A 1R0K-T
[HM-170GP] only T 23.7/13.2
L5 6200005011 S.COL NLV25T-100J T 23.4/22.2
R4 7030005060 S.RES ERJ2GEJ 333 X (33 k) T 18.7/40.8
R5 7030005060 S.RES ERJ2GEJ 333 X (33 k) T 22.4/42.2
R6 7030004980 S.RES ERJ2GEJ 101 X (100) T 22.9/46.3
R7 7030005070 S.RES ERJ2GEJ 683 X (68 k) T 17.8/44.3
R8 7030005010 S.RES ERJ2GEJ 681 X (680) T 16.5/45.7
R9 7030005040 S.RES ERJ2GEJ 472 X (4.7 k) B 26.4/46.1
R12 7030005050 S.RES ERJ2GEJ 103 X (10 k) T 11.8/39.5
R13 7030004990 S.RES ERJ2GEJ 221 X (220) B 28.9/46.1
R14 7030004990 S.RES ERJ2GEJ 221 X (220) B 40/34
R16 7310004790 S.TRI EVM-3YSX50 B14 (103) B 35.5/48.5
R17 7030005090 S.RES ERJ2GEJ 104 X (100 k) B 26.1/23.2
R19 7030004990 S.RES ERJ2GEJ 221 X (220)
[HM-175GPS] only B 30.1/46.6
R21 7030004980 S.RES ERJ2GEJ 101 X (100) T 26.8/28.4
R22 7030004980 S.RES ERJ2GEJ 101 X (100) T 24.2/28.2
R23 7030004990 S.RES ERJ2GEJ 221 X (220)
[HM-175GPS] only T 24.1/44.6
R24 7030007290 S.RES ERJ2GEJ 222 X (2.2 k) B 15.4/47.4
R25 7030004980 S.RES ERJ2GEJ 101 X (100) T 11.8/41
R26 7030005050 S.RES ERJ2GEJ 103 X (10 k)
[HM-175GPS] only B 20.3/50
R27 7030005090 S.RES ERJ2GEJ 104 X (100 k)
[HM-175GPS] only B 21.2/50
R28 7030005050 S.RES ERJ2GEJ 103 X (10 k)
[HM-175GPS] only B 24.8/53
R28 7030010040 S.RES ERJ2GEJ-JPW [HM-170GP] only B 24.8/53
R29 7030005090 S.RES ERJ2GEJ 104 X (100 k)
[HM-175GPS] only B 26.4/47
R37 7030005050 S.RES ERJ2GEJ 103 X (10 k)
[HM-175GPS] only B 21.4/51.3
R41 7030005060 S.RES ERJ2GEJ 333 X (33 k)
[HM-175GPS] only T 23.1/19.5
R42 7030010040 S.RES ERJ2GEJ-JPW [HM-170GP] only T 24.3/10.3
R43 7030005050 S.RES ERJ2GEJ 103 X (10 k)
[HM-175GPS] only B 22.4/49.5
R44 7030010040 S.RES ERJ2GEJ-JPW [HM-170GP] only B 23.2/50.4
R47 7030005050 S.RES ERJ2GEJ 103 X (10 k) B 26.4/21.9
R48 7030010040 S.RES ERJ2GEJ-JPW [HM-175GPS] only B 26.1/54.3
R50 7030010040 S.RES ERJ2GEJ-JPW B 15.9/48.6
R51 7030010040 S.RES ERJ2GEJ-JPW [HM-170GP] only B 28.9/47
R53 7030005100 S.RES ERJ2GEJ 154 X (150 k)
[HM-175GPS] only T 23.4/11.8
R55 7510001730 S.TMR ERTJOEP 473J T 19/44.8
R56 7030005160 S.RES ERJ2GEJ 105 X (1 M) T 19.9/44.8
R57 7030005530 S.RES ERJ2GEJ 100 X (10) T 24.2/20.4
R58 7030005050 S.RES ERJ2GEJ 103 X (10 k) B 25.8/11.7
R59 7030005050 S.RES ERJ2GEJ 103 X (10 k)
[HM-175GPS] only T 18.2/47
R60 7030010040 S.RES ERJ2GEJ-JPW [HM-170GP] only T 12.7/48.4
R61 7030005010 S.RES ERJ2GEJ 681 X (680)
[HM-175GPS] only B 30.5/23.2
R62 7030007340 S.RES ERJ2GEJ 153 X (15 k)
[HM-175GPS] only B 30.5/24.8
C1 4030017730 S.CER ECJ0EB1E471K B 14.2/49.7
C2 4030017920 S.CER ECJ0EB1A683K B 14.2/48.8
C3 4030017420 S.CER ECJ0EC1H470J T 20.2/42.7
C4 4030017760 S.CER ECJ0EB1H222K T 17.8/45.2
C5 4030016930 S.CER ECJ0EB1A104K B 37.7/47.2
C6 4030017730 S.CER ECJ0EB1E471K T 23.1/24.5
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