Icom ID-800H User manual

GUIDE FOR CD
1) COMPOSION
1
ID_800H ID800.pdf
FYC A3format.pdf
A4format.pdf
Instruction.pdf
Unitparts.pdf
Installer ar505eng.exe
W_README.txt
2) DESCRIPTION
A3format.pdf
Consists of A3 format pages (Board layouts, Mechanical parts and disassembly, and etc.). This file is used for printing out A3
format pages.
ID800.pdf
The service manual for ID-800H including all service information in this CD. This file is mainly used for viewing on the computer
display and checking page order to make printed service manual. Or when you want to find a component, you can find very fast
using “FIND” function (except Board Layouts).
A4format.pdf
Consists of A4 format pages (Circuit description, Adjustment procedures, Parts list, and etc.). This file is used for printing out A4
format pages.

2
=========================================================================================
Icom, Icom Inc. and Icom logo are registered trademarks of Icom Incorporated (Japan) in the United states, the
United Kingdom, Germany, France, Spain, Russia and/or other countries.
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Adobe, the Adobe logo, Acrobat, and the Acrobat logo are trademarks of Adobe Systems Incorporated.
Microsoft and Windows are registered trademarks of Microsoft Corporation in the U.S.A. and other countries.
Copyright 2005 Icom Inc.
=========================================================================================
ar505eng.exe
ar505eng.exe is an installation program of Adobe®Reader 5.0 (English version) for Microsoft®Windows®95/98/
Me/NT/2000/XP users.
W_README.txt
W_README.txt is a readme text about this service manual for Windows®user that not installed Adobe®Reader
yet.
Instruction.pdf
The instruction manual for ID-800H. The contents of this file is exactly same as supplied instruction manual with product and
consists of all A4 format pages. If you have A4 format printer, you can print and make brand new instruction manual any time you
want. This file is also very helpful when you want to change or set product setting condition for adjustment or else.
Unitparts.pdf
Uitparts.pdf is assemble unit information for ID-800H. This information for authorized dis-tributor/dealer only. Because we (ICOM
INC.) don’t sell assemble unit to general.

SERVICE
MANUAL
VHF/UHF DIGITAL TRANSCEIVER
S-14121HZ-C1
May. 2005

INTRODUCTION
This service manual describes the latest service information
for the ID-800H VHF/UHF DIGITAL TRANSCEIVER at the
time of publication.
DANGER
NEVER connect the transceiver to an AC outlet or to a DC
power supply that uses more than 16 V. This will ruin the
transceiver.
DO NOT expose the transceiver to rain, snow or any liquids.
DO NOT reverse the polarities of the power supply when
connecting the transceiver.
DO NOT apply an RF signal of more than 20 dBm (100
mW) to the antenna connector. This could damage the
transceiver’s front end.
ORDERING PARTS
Be sure to include the following four points when ordering
replacement parts:
1. 10-digit order numbers
2. Component part number and name
3. Equipment model name and unit name
4. Quantity required
<SAMPLE ORDER>
1140005990 S.IC MB15A02PFV ID-800H MAIN UNIT 5 pieces
8810009610 Screw FH M2.6×6 ZK ID-800H Bottom cover 10 pieces
Addresses are provided on the inside back cover for your
convenience.
REPAIR NOTES
1. Make sure a problem is internal before disassembling
the transceiver.
2. DO NOT open the transceiver 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
transceiver is defective.
6. DO NOT transmit power into a signal generator or a
sweep generator.
7. ALWAYS connect a 50 dB to 60 dB attenuator between
the transceiver and a deviation meter or spectrum
analyzer when using such test equipment.
8. READ the instructions of test equipment thoroughly
before connecting equipment to the transceiver.
To upgrade quality, any electrical or mechanical parts and
internal circuits are subject to change without notice or
obligation.
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.
MODEL VERSION SYMBOL
ID-800H U.S.A. USA
Export EXP

TABLE OF CONTENTS
SECTION 1 SPECIFICATIONS
SECTION 2 INSIDE VIEWS
SECTION 3 DISASSEMBLY INSTRUCTIONS
SECTION 4 CIRCUIT DESCRIPTION
4 - 1 RECEIVER CIRCUITS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4 - 1
4 - 2 TRANSMITTER CIRCUITS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4 - 4
4 - 3 PLL CIRCUITS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4 - 6
4 - 4 POWER SUPPLY CIRCUITS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4 - 8
4 - 5 OTHER CIRCUITS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4 - 9
4 - 6 PORT ALLOCATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4 - 10
SECTION 5 ADJUSTMENT PROCEDURES
5 - 1 PREPARATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5 - 1
5 - 2 CODEC ADJUSTMENT. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5 - 3
5 - 3 SOFTWARE ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5 - 4
SECTION 6 PARTS LIST
SECTION 7 MECHANICAL PARTS AND DISASSEMBLY
SECTION 8 SEMI-CONDUCTOR INFORMATION
SECTION 9 BOARD LAYOUTS
9 - 1 CONTROL UNIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9 - 1
9 - 2 MAIN UNIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9 - 3
9 - 3 VCO BOARD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9 - 5
9 - 4 CODEC BOARD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9 - 5
SECTION 10 BLOCK DIAGRAM
SECTION 11 VOLTAGE DIAGRAMS
11 - 1 MAIN UNIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11 - 1
11 - 2 CODEC BOARD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11 - 5
11 - 3 CONTROL UNIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11 - 6

SECTION 1 SPECIFICATIONS
1 - 1
MGENERAL
• Frequency range :
• Type of emission : FM, GMSK, AM (118.0–135.995 MHz range and Rx only.)
• Digital Transmission speed : 4.8 kbps
• CODEC : AMBE 2.4 kbps
• Number of memory channel : 512 (including 10 scan edges and 2 calls)
• Usable temperature range : –10˚C to +60˚C; +14˚F to +140˚F
• Frequency resolution : 5, 10, 12.5, 15, 20, 25, 30, 50, 100, 200 kHz
• Frequency stability : ±2.5 ppm (–10˚C to +60˚C; +14˚F to +140˚F)
• Power supply requirement : 13.8 V DC ±15% (negative ground)
• Current drain (at 13.8 V DC) :
• Antenna connector : SO-239 (50 Ω)
• Dimensions (proj. not included) : 141(W)×40(H)×185.4(D) mm; 59⁄16(W)×19⁄16(H)×75⁄16(D) inch
• Weight (approx.) : 1.2 kg; 2 lb 10 oz
MTRANSMITTER
• Output power (at 13.8 V DC; typ.) : VHF 55 W /15 W/5 W (selectable)
UHF 50 W/15 W/5 W (selectable)
• Modulation system : FM Variable reactance frequency modulation
DV GMSK
• Maximum frequency deviation : ±5.0 kHz
• Spurious emissions : Less than –60 dB
• Microphone connector : 8-pin modular jack (600 Ω)
MRECEIVER
• Receive system : Double-conversion superheterodyne
• Intermediate frequencies : 1st IF 46.05 MHz, 2nd IF 450 kHz
• Sensitivity : FM Less than 0.18 µV (–122 dBm) at 12 dB SINAD
DV Less than 0.35 µV (–116 dBm) at BER 1×10–2
• Squelch sensitivity : Less than 0.13 µV (–125 dBm) at threshold
• Selectivity : Wide More than 12 kHz/6 dB, Less than 30 kHz/60 dB
Narrow More than 6 kHz/6 dB, Less than 20 kHz/60 dB
• Spurious and image rejection : More than 60 dB
• AF output power (at 13.8 V DC) : More than 2.0 W at 10% distortion with an 8 Ω load
• External speaker connector : 3-conductor 3.5(d) mm (1⁄8")/8 Ω
All stated specifications are subject to change without notice or obligation.
VERSION RX (MHz) TX (MHz)
[USA]
118.000–173.995*1, 230.000–549.995*3
810.000–824.000*4, 849.000–869.000*4
894.000–999.990*4
144.000–148.000, 440.000–450.000
[EXP] 118.000–173.995*1, 230.000–549.995*2
810.000–999.990*4144.000–148.000, 430.000–440.000
*1Guaranteed 144.000–148.000 MHz, *2Guaranteed 430.000–440.000 MHz
*3Guaranteed 440.000–450.000 MHz, *4Not guaranteed
VHF UHF
TX
High 12 A (at 55 W) 12.5 A (at 50 W)
Middle 7.5 A (at 15 W) 7.5 A (at 15 W)
Low 5.5 A (at 5 W) 5.0 A (at 5 W)
RX Standby 0.9 A
Max. audio 1.1 A

SECTION 2 INSIDE VIEWS
• CONTROL UNIT (TOP VIEW)
• MAIN UNIT (TOP VIEW)
2 - 1
LCD back light
(DS22: CV1074)
Key back light
DS13-DS18,DS20: SML512MW
DS21: SML-020MYT
LCD backlight
(DS22: CV1074)
Key backlights
DS13-DS18, DS20: SML512MW
DS21: SML-020MYT
VCO board
AF amplifier
(IC510: LA4425A)
1st mixcer [VHF band]
(Q32: 3SK299)
1st mixcer [400M,800MHz band]
(IC12: µPC2757TB)
D/A converter
(IC11: M62352GP)
VCO board
PLL ICs (main unit)
(IC1, IC2: MB15A02PFV-1)
AF amplifier
(IC510: LA4425A)
1st mixer [VHF band]
(Q32: 3SK299)
1st mixer
[400M band], [800M band]
(IC12: µPC2757TB)
D/A converter
(IC11: M62352GP)
Ceramic bandpass filter
(FI2: CFWM450E)
Ceramic bandpass filter
(FI1: CFWS450HT)
CODEC board

• CONTROL UNIT (BOTTOM VIEW)
• MAIN UNIT (BOTTOM VIEW)
Color controller
(Q6,Q7: 2SC4116)
Control unit CPU
(IC6: HD6433842RB36H) Reset IC (IC2: S-80945CLMC-G7F)
+8V regurator
Q1: 2SC4116
Q3: 2SA1734
D5: MA8068
Color controller
(Q6, Q7: 2SC4116)
Control unit CPU
(IC6: HD6433842RC37H) Reset IC (IC2: S-80945CLMC-G7F)
+5V regulator
(IC5: TA78L05F)
+8V regulator
Q1: 2SC4116
Q3: 2SA1734
D5: MA8068
+8V regurator
(IC504: TA7808F)
+5V regurator
(IC503: TA7805F)
D/A converter
(IC4: M62363FP-650C)
IF IC
(IC8: TA31136FN)
APC controller
(IC15: NJM3404AV)
1st mixer [UHF band]
(Q35: 3SK299)
PA module [UHF band]
(IC14: S-AU82L) PA module [VHF band]
(IC13: S-AV32)
+8V regulator
(IC504: TA7808F)
+5V regulator
(IC503: TA7805F)
D/A converter
(IC4: M62364FP)
FM IF IC
(IC8: TA31136FN)
APC amplifier
(IC15: NJM3404AV)
1st mixer [UHF band]
(Q35: 3SK299)
PA module [UHF band]
(IC14: S-AU82L) PA module [VHF band]
(IC13: S-AV32)
PA module [UHF band]
(IC14: S-AU82L)
EEPROM
(IC501: HN58X24128FPI)
MAIN CPU*
(IC505: HD64F2144AFA20)
* Located top side of the point.
2 - 2

SECTION 3 DISASSEMBLY INSTRUCTIONS
• REMOVING THE MAIN UNIT AND CODEC BOARD
1Unscrew 4 screws A, and remove the cover.
2
Disconnect the cable Bfrom J505, and remove the speaker.
3Remove 2 cube shaped rubbers C.
Continue to right above.
3 - 1
4Disconnect the cable Dfrom J508.
5Disconnect the cable Efrom J1.
6Unscrew 3 screws F, and remove the shield cover G.
7Remove the CODEC board from J507.
8Unsolder 3 points H.
J505J505
B
C
A
A
J1
J508
F
G
E
D
VCO
H
CODEC board
J507
9Unscrew 8 screws I, and remove the MAIN unit.
I
MAIN UNIT

3 - 2
• REMOVING THE CONTROL UNIT
1Remove 2 knobs A.3Unscrew 2 screws C, and remove the LCD plate.
4Remove the CONTROL unit.
2Unscrew 2 screws B, and remove the cover.
A
B
Continue to right above.
C
CONTROL UNIT