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Make/Model Information:

  • Brand:   Icom
  • Models included:
    • Icom IC-V8000

File Information:

  • Type:   Factory Service Manual (FSM)
  • Language:   English (EN)
  • Number of pages:   34
  • File size:  ∼ 2.10 MB
  • File Format:   PDF only
  • SME Watermarks:   None
  • Password lock:   No
  • Edit/copy/modify:   Yes
  • SKU:   ROIC-0151

NOTE:  This list was created by program script and may not accurately represent the text from the source pages.   For full preview please click on 'Download sample':

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SERVICE
MANUAL
VHF FM TRANSCEIVER

INTRODUCTION DANGER
This service manual describes the latest service information
for the IC-V8000 VHF FM TRANSCEIVER at the time of pub-
lication.
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

1110003200 S.IC TA31136FN IC-V8000 MAIN UNIT 5 pieces
8810006050 Screw Icom screw E7 IC-V8000 Chassis 10 pieces
Addresses are provided on the inside back cover for your
convenience.
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 (100mW) to the antenna connector. This could damage the trans-
ceiver's front end.
REPAIR NOTES
1. Make sure a problem is internal before disassembling
the transceiver.
2. DO NOT open the transceiver until the transceiver is dis-
connected 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 insulat-
ed turning tool MUST be used for all adjustments.
5. DO NOT keep power ON for a long time when the trans-
ceiver 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 ana-
lyzer 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.
VERSION
C.S.America
U.S.A.
SYMBOL
SUPPLIED MICROPHONE
HM-118N
HM-118TN
HM-133V
HM-118TAN
SECTION 1 SPECIFICATIONS
SECTION 2 INSIDE VIEWS
SECTION 3 DISASSEMBLY AND OPTION INSTRUCTIONS
SECTION 4 CIRCUIT DESCRIPTION
4-1 RECEIVER CIRCUITS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-1
4-2 TRANSMITTER CIRCUITS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-2
4-3 PLL CIRCUITS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-3
4-4 POWER SUPPLY CIRCUITS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-3
4-5 PORT ALLOCATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-4
SECTION 5 PARTS LIST
SECTION 6 MECHANICAL PARTS AND DISASSEMBLY
6-1 IC-V8000 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-1
6-2 HM-133V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-3
SECTION 7 SEMI-CONDUCTOR INFORMATION
SECTION 8 BOARD LAYOUTS
8-1 HM-133V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8-1
8-2 LOGIC BOARD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8-2
8-3 MAIN UNIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8-4
SECTION 9 BLOCK DIAGRAM
SECTION 10 VOLTAGE DIAGRAM
10-1 MAIN UNIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10-1
10-2 LOGIC BOARD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10-2
10-3 HM-133V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10-3
TABLE OF CONTENTS
GENERAL
Frequency coverage :
*Specifications Guaranteed: 144148 MHz only
Type of emission : FM (F2D / F3E)
Frequency stability : 10 ppm (10C to +60C; +14F to +140F)
Tuning steps : 5, 10, 12.5, 15, 20, 25, 30 or 50 kHz
Antnna connector : SO-239 (50 )
Power supply requirement : 13.8 V DC (Operable voltage range: 11.7 to 15.9 V)
(negative ground)
Number of memory channel : 207 channels (including 6 scan edges and 1 call channel)
Call channel : 1 channel
Scanning mode : Full, Program, Priority, Memory, Channel, Skip, Tone, DTCS, Bank and WX
Current drain (approx.) :
Usable temperature range : 10C to +60C; +14F to +140F
Dimensions (projections not included) : 150(W)
Weight : 1.09 kg; 12.3 oz.; 38.4 oz
TRANSMITTER
RF output power (at 13.8 V DC) : 75 W / 25 W / 10 W / 5 W (High / Middle High / Middle Low / Low)
Modulation system : Variable reactance frequency modulation
Maximum frequency deviation : Narrow: 2.5 kHz*; Wide: 5.0 kHz
Spurious emissions : Less than 60 dB
Microphone connector : 8-pins modular (600 )
RECEIVER
Receive system : Double conversion superheterodyne system
Intermediate frequencies : 1st 21.7 MHz
2nd 450 kHz
Sensitivity : 0.15 V at 12 dB SINAD (typical)
Squelch sensitivity : 0.08 V at threshold (typical)
Selectivity : Narrow; More than 3.0 kHz at 6 dB, Less than 9.0 kHz at 55 dB*
Wide; More than 6.0 kHz at 6 dB, Less than 14.0 kHz at 60 dB
Spurious and image rejection : 60 dB (typical)
Audio output power (at 7.2 V DC) : More than 2.0 W at 10% distortion with an 8 load
Ext. speaker connector : 3-conductor 3.5(d) mm (1/8”)/8
*[USA] version only
All stated specifications are subject to change without notice or obligation.
Transmit
Receiving
SECTION 1 SPECIFICATIONS
Version
Receive
136.000174.000 MHz*
Transmit
144.000148.000 MHz
140.000150.000 MHz*
136.000174.000 MHz*
High (75 W)
Middle High (25 W)
Middle Low (10 W)
Low (5 W)
Max. audio
Stand-by
SECTION 2 INSIDE VIEWS
MAIN UNIT
LOGIC BOARD
Reference oscillator
(X1: CR-659)
VCO circuit
Antenna switching circuit
(D12, D27: XB15A407,
D19: XB15A308,
D16: HVU131TRF)
AF power amplifier
(Q23: RD70HVF1)
1st IF filter
(FI3, FI4: FL-310)
2nd IF filter
(FI1: CFWS450F,
FI2: CFWS450HT)
(IC5: HN58X2432TI)
(IC7: HD6433876B53H)
System clock
(X1: CR-663)
Speaker
Reset IC
(IC4: S-80942ANMP-DD6)
LOGIC board
8-1 HM-133V
TOP VIEW
SECTION 8 BOARD LAYOUTS
BOTTOM VIEW
C22 EP1
C18 L2
Q6 Q7 D17
B5811B
to Logic board J1
MDA T A
D S 11
D S 4 D S 3
D S 2 D S 1
1-1-32, Kamiminami, Hirano-ku, Osaka, 547-0003, Japan
S-13815IZ-C1
2002 Icom Inc.


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