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ID800.pdf The service manual for ID-800H including all service information in this CD. This fi le is mainly used for viewing on the computer display and checking page order to make printed service manual. Or when you want to fi nd a component, you can fi nd very fast using “FIND”...
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Instruction.pdf The instruction manual for ID-800H. The contents of this fi le 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.
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SERVICE MANUAL VHF/UHF DIGITAL TRANSCEIVER S-14121HZ-C1 May. 2005...
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8. READ the instructions of test equipment thoroughly before connecting equipment to the transceiver. 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.
SECTION 2 INSIDE VIEWS • CONTROL UNIT (TOP VIEW) LCD back light LCD backlight (DS22: CV1074) (DS22: CV1074) Key back light Key backlights DS13-DS18,DS20: SML512MW DS13-DS18, DS20: SML512MW DS21: SML-020MYT DS21: SML-020MYT • MAIN UNIT (TOP VIEW) Ceramic bandpass filter (FI2: CFWM450E) 1st mixcer [VHF band] 1st mixer [VHF band]...
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• CONTROL UNIT (BOTTOM VIEW) Color controller Color controller +8V regurator +8V regulator +5V regulator (Q6,Q7: 2SC4116) (Q6, Q7: 2SC4116) Q1: 2SC4116 Q1: 2SC4116 (IC5: TA78L05F) Q3: 2SA1734 Q3: 2SA1734 D5: MA8068 D5: MA8068 Control unit CPU Control unit CPU Reset IC Reset IC (IC6: HD6433842RB36H)
SECTION 3 DISASSEMBLY INSTRUCTIONS • REMOVING THE MAIN UNIT AND CODEC BOARD 7 Remove the CODEC board from J507. 1 Unscrew 4 screws A, and remove the cover. 8 Unsolder 3 points H. 2 Disconnect the cable B from J505, and remove the speaker. 3 Remove 2 cube shaped rubbers C.
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• REMOVING THE CONTROL UNIT 3 Unscrew 2 screws C, and remove the LCD plate. 1 Remove 2 knobs A. 4 Remove the CONTROL unit. CONTROL UNIT 2 Unscrew 2 screws B, and remove the cover. Continue to right above. 3 - 2...
SECTION 4 CIRCUIT DESCRIPTION 4-1 RECEIVER CIRCUITS The RF signals from the antenna switching circuits pass through the each attenuator circuit (for VHF band is D49, for 4-1-1 TRIPLEXER CIRCUIT (MAIN UNIT) UHF band is D46 and D48, for 800 MHz band is D39). The transceiver has a triplexer (low-pass and high-pass filters) on the first stage from the antenna connector The D/A converter outputs “ATT”...
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• 400 MHz BAND RF CIRCUIT • UHF BAND (230–550 MHz EXCEPT UHF BAND) (EXP: 430–440 MHz, USA: 440–450 MHz) The RF signals from the attenuator circuit are applied to the The filtered signals from the bandpass filter (FI4) are mixed band switch (D43).
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The ceramic filters (FI1, FI2) are switched by W/N switches 4-1-8 AF AMPLIFIER CIRCUIT (MAIN UNIT) (IC9, IC10) that is controlled by “WN_SEL” signal from the The AF amplifier circuit amplifies the detected audio signals main CPU (IC505, pin 99). to drive a speaker.
A portion of the AF signals from the AM/FM switch (IC5, pin • AUDIO SIGNALS 1) pass through the low-pass filter (Q3) to remove AF (voice) The AF signals from the microphone are amplified at the signals, and are then applied to the CTCSS/DTCS decoder microphone amplifiers (Q505, IC506), and are then applied inside the main CPU (IC505, pin 29) via the “DTCS_IN”...
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When setting to 1200 bps mode, the signals pass through 4-2-3 VHF MODULATION CIRCUIT (VCO BOARD) the analog switch (IC509, pins 3, 4), and then pass through The modulation circuit modulates the VCO oscillating signal the switch again (pins 10, 11). The switched signals are (RF signal) using the microphone audio signals.
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The filtered signal is passed through the low-pass filter (L51, 4-2-8 UHF DRIVE AMPLIFIER CIRCUIT (MAIN UNIT) L52, L56, C295, C299) to suppress unwanted signals, and The output signal from VCO board passes through the high- is then applied to the antenna connector (CHASSIS unit J2). pass filter (L69, C119) and attenuator (R135, R136, R138), and is then amplified at the pre-drive (Q31) and drive (Q34, D14) amplifiers.
4-3 PLL CIRCUITS 4-3-3 UHF LOOP (VCO BOARD) The generated signal at the U-VCO (Q101, D100, D101) 4-3-1 GENERAL (MAIN UNIT) enters the PLL IC (MAIN unit; IC2, pin 8) via the buffer A PLL circuit provides stable oscillation of the transmit fre- amplifiers (Q50, Q102) and VCO switch (D51).
• V-VCO CIRCUIT A portion of the amplified signal from the buffer amplifier The oscillated signal at the V-VCO circuit (Q3, D1, D2) is (Q102) is amplified at the buffer amplifier (Q50) via the VCO amplified at the buffer amplifier (Q4), and is then applied to switch (D51), and is then fed back to the PLL IC (MAIN unit;...
4-4-3 MAIN UNIT VOLTAGE LINE 4-5 OTHER CIRCUITS 4-5-1 SUB CPU RESET CIRCUIT (CONTROL UNIT) Line Description IC2 is the reset voltage detecting circuit. The output voltage The voltage from the external power supply via from the +5 regulator circuit (IC5) is applied to the VDD the W501.
4-6 PORT ALLOCATIONS 4-6-1 MAIN CPU (MAIN UNIT; IC505) Port name Description Port name Description number number Outputs the transmit mute signal. Outputs the strobe signal to the D/A TX-MUTE DA_STB High: While transmit is muted. converter (IC11, pin 15). Input port for the microphone PTT Outputs AF mute control signal.
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4-6-2 D/A CONVERTER IC PORT ALLOCATIONS 4-6-4 SUB CPU PORT ALLOCATIONS (CONTROL UNIT; IC6) (MAIN UNIT; IC11) Port Port Description Description number name number name Input port for [BAND•MODE]. Output the VHF bandpass filters TUNE_V1– 2–4 Low: While [BAND•MODE] is TUNE_V3 (D22, D23, D29, D41) tuning signals.
SECTION 5 ADJUSMENT PROCEDURESE 5-1 PREPARATION Most of adjustment must be performed on the adjustment mode. ▄ REQUIRED TEST EQUIPMENT EQUIPMENT GRADE AND RANGE EQUIPMENT GRADE AND RANGE Output voltage : 13.8 V Frequency range : 300–3000 Hz DC power supply Audio generator Current capacity : 20 A or more...
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▄ CONNECTIONS Modulation Attenuator analyzer 50 dB or 60 dB Power meter RF power meter 50 Ω, 1–80 W 13.8 V, 20 A or more Standerd signal generator 0.1–1300 MHz –127 to –17 dBm (0.1 µV to 32 mV) CAUTION! DO NOT transmit JIG CABLE INFORMATION while an SSG is...
5-2 CODEC BOARD ADJUSTMENT ADJUSTMENT ADJUSTMENT CONDITION OPERATION ITEM POWER SUPPLY • Connect 5.0 V DC power supply to pin 29 ( ) and pin 30 ( ) of J301. CONNECTIONS • Connect 8.0 V DC power supply to pin 28 ( ) and pin 30 ( ) of J301. ENTERING •...
5-3 SOFTWARE ADJUSTMENT ADJUSTMENT ADJUSTMENT CONDITION DISPLAY OPERATION ITEM REFERENCE 1 • Operating freq. : 435.000 MHz [EXP] • Rotate [DIAL] to set to the frequency FREQUENCY 445.000 MHz [USA] as below. [Fr] • Connect an RF power meter or dummy Version Adjustment freqency load to the antenna connector.
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SOFTWARE ADJUSTMENT (continued) ADJUSTMENT ADJUSTMENT CONDITION DISPLAY OPERATION ITEM FREQUENCY 1 • Operating freq. : 145.000 MHz [EXP] • Rotate [DIAL] to set to 4.3 kHz. DEVIATION 146.000 MHz [USA] • Push [BAND]. [DE] (FM: VHF) • Connect an audio generator to the mi- crophone connector and set as: : 1 kHz/20 mV [EXP] 1 kHz/80 mV [USA]...
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SOFTWARE ADJUSTMENT (continued) ADJUSTMENT ADJUSTMENT CONDITION DISPLAY OPERATION ITEM SENSITIVITY 1 • Operating freq. : 118.100 MHz • Push [BAND]. [Tr] • C o n n e c t a n S S G t o t h e a n t e n n a connector and set as : Level : 1 µV* (–107dBm)
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SOFTWARE ADJUSTMENT (continued) ADJUSTMENT ADJUSTMENT CONDITION DISPLAY OPERATION ITEM SQUELCH • Operating freq. : 145.120 MHz [EXP] • Push [BAND]. [Sq] (Narrow) 146.100 MHz [USA] • C o n n e c t a n S S G t o t h e a n t e n n a connector and set as ;...
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SOFTWARE ADJUSTMENT (continued) ADJUSTMENT ADJUSTMENT CONDITION DISPLAY OPERATION ITEM SQUELCH • Operating freq. : 145.120 MHz [EXP] • Push [BAND]. [Sq] (Narrow) 146.100 MHz [USA] • C o n n e c t a n S S G t o t h e a n t e n n a connector and set as ;...
SECTION 6 PARTS LIST [REPLACEMENT UNITS] [CONTROL UNIT] ORDER ORDER NO. UNIT NAME DESCRIPTION LOCATION 0327880101 U ID800 #01 CONTROL 6510023680 CNR 2633 FRONT CONNECTOR 0327880102 U ID800 #01 VCO 0327880103 U ID800 #01 CODEC 5030002710 LCD IS09216E DS13 5040002930 S.LED SML-512MW T86 60.1/6.7 DS14 5040002930 S.LED SML-512MW T86...
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SECTION 8 SEMI-CONDUCTOR INFORMATION • TRANSISTORS AND FET'S • DIODES 2SA1362 GR 2SA1586 GR 2SA1588 GR 2SA1734 2SB1182 TL Q 1SS355 1SS357 1SS362 1SV286 1SV305 (Symbol: AEG) (Symbol: SG) (Symbol: ZG) (Symbol: LB) (Symbol: None) (Symbol: A) (Symbol: S3) (Symbol: C3) (Symbol: T7) (Symbol: TV) 2SC3357 T1...
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SECTION 9 BOARD LAYOUTS 9-1 CONTROL UNIT • TOP VIEW LOCK BAND MODE H100 H105 S.MW V/MHz M/CALL TONE MONI SCAN PRIO T-SCAN DTMF 9 - 1...
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• BOTTOM VIEW (CONTROL UNIT) to MAIN unit J503 H105 H100 9 - 2...
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9-2 MAIN UNIT J508 • TOP VIEW to CODEC board J504 J502 MICIN AFOUT P_PTT 232OUT DATAIN MICE 232IN EXTMIC MICU/D P_SQL DATAOUT to Microphone J505 to Speaker (chassis SP1) to VCO board J1 W501 from DC power black to FAN to VCO board J2 MP27 (CHASSIS)
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