Basics Guide
Page 11
... death, serious injury or an explosion may occur. Personal injury, fire hazard or electric shock may occur. Equipment damage may occur. SAVE THIS INSTRUCTION MANUAL- q Antenna 1 w Hand strap 1 e Battery charger (BC-167SA/SD/SV 1 r Belt clip 1 t Battery pack (BP-271 1 y CD (Including the CS-51 cloning ...following accessories are supplied with the transceiver. No risk of personal injury, fire or electric shock. Recommended for the ID-51A/ID-51E. IMPORTANT READ ALL INSTRUCTIONS carefully and completely before using the transceiver. EXPLICIT DEFINITIONS WORD R DANGER!
... death, serious injury or an explosion may occur. Personal injury, fire hazard or electric shock may occur. Equipment damage may occur. SAVE THIS INSTRUCTION MANUAL- q Antenna 1 w Hand strap 1 e Battery charger (BC-167SA/SD/SV 1 r Belt clip 1 t Battery pack (BP-271 1 y CD (Including the CS-51 cloning ...following accessories are supplied with the transceiver. No risk of personal injury, fire or electric shock. Recommended for the ID-51A/ID-51E. IMPORTANT READ ALL INSTRUCTIONS carefully and completely before using the transceiver. EXPLICIT DEFINITIONS WORD R DANGER!
Basics Guide
Page 13
... This could cause a fire or damage the transceiver. 13 CAUTION: MAKE SURE the flexible antenna and 14 battery pack are securely attached to water, clean the battery contacts thoroughly with Icom chargers. tery pack. This device emits Radio Frequency (RF) energy. If you have any...the lips and the transceiver is very close to burst. ceiver with Icom radios or Icom chargers. Use and charge only specified Icom battery packs with wet hands. NEVER hold the transceiver so that the antenna and battery pack are tested and approved for Human Radio Frequency Electromagnetic Fields...
... This could cause a fire or damage the transceiver. 13 CAUTION: MAKE SURE the flexible antenna and 14 battery pack are securely attached to water, clean the battery contacts thoroughly with Icom chargers. tery pack. This device emits Radio Frequency (RF) energy. If you have any...the lips and the transceiver is very close to burst. ceiver with Icom radios or Icom chargers. Use and charge only specified Icom battery packs with wet hands. NEVER hold the transceiver so that the antenna and battery pack are tested and approved for Human Radio Frequency Electromagnetic Fields...
Basics Guide
Page 14
... IPX4 requirements for long periods of possible damage to the transceiver's case or waterproof seal. * Only when the BP-271 or BP-272 (option), flexible antenna, [MIC/SP] cap, [DATA/DC IN] cap and [micro SD] slot cap are attached. The transceiver meets IPX7* require- However, once the transceiver has been...
... IPX4 requirements for long periods of possible damage to the transceiver's case or waterproof seal. * Only when the BP-271 or BP-272 (option), flexible antenna, [MIC/SP] cap, [DATA/DC IN] cap and [micro SD] slot cap are attached. The transceiver meets IPX7* require- However, once the transceiver has been...
Basics Guide
Page 52
... can be determined by one or more of the FCC Rules. CAUTION: Changes or modifications to this device, not expressly approved by Icom Inc., could void your authority to operate this equipment does cause harmful interference to radio or television reception, which the receiver is connected...experienced radio/TV technician for a Class B digital device, pursuant to part 15 of the following measures: • Reorient or relocate the receiving antenna. • Increase the separation between the equipment and re- ceiver. • Connect the equipment into an outlet on a circuit different ...
... can be determined by one or more of the FCC Rules. CAUTION: Changes or modifications to this device, not expressly approved by Icom Inc., could void your authority to operate this equipment does cause harmful interference to radio or television reception, which the receiver is connected...experienced radio/TV technician for a Class B digital device, pursuant to part 15 of the following measures: • Reorient or relocate the receiving antenna. • Increase the separation between the equipment and re- ceiver. • Connect the equipment into an outlet on a circuit different ...
Service Manual
Page 2
... Spectrum Analyzer, when using such test equipment. 8. Quantity required 1110003491 S.IC TA31136FNG ID-51A MAIN UNIT 5 pieces 8820001210 Screw 2438 screw ID-51E Top cover 10 pieces Addresses are registered trademarks of more than 20 dBm (100 mW) to the antenna connector. Icom, Icom Inc. This will ruin the transceiver. ALWAYS connect a 30 dB to include...
... Spectrum Analyzer, when using such test equipment. 8. Quantity required 1110003491 S.IC TA31136FNG ID-51A MAIN UNIT 5 pieces 8820001210 Screw 2438 screw ID-51E Top cover 10 pieces Addresses are registered trademarks of more than 20 dBm (100 mW) to the antenna connector. Icom, Icom Inc. This will ruin the transceiver. ALWAYS connect a 30 dB to include...
Service Manual
Page 4
..., 25, 30, 50, 100, 125 and 200 kHz *The selectable steps may be muted, depending on the selected fre- battery pack and antenna) D Transmitter • Modulation system : FM Variable reactance frequency modulation DV GMSK reactance frequency modulation • Output power (at High/Mid. BC... 430-440 MHz only *3Guaranteed 440-450 MHz only *4Guaranteed 144-148 MHz only *588.0-108.0 MHz for external DC power, or specified Icom's battery pack • Digital transmission speed : 4.8 kbps • Voice coding speed : 2.4 kbps • Current drain (at 7.4 V DC) : ...
..., 25, 30, 50, 100, 125 and 200 kHz *The selectable steps may be muted, depending on the selected fre- battery pack and antenna) D Transmitter • Modulation system : FM Variable reactance frequency modulation DV GMSK reactance frequency modulation • Output power (at High/Mid. BC... 430-440 MHz only *3Guaranteed 440-450 MHz only *4Guaranteed 144-148 MHz only *588.0-108.0 MHz for external DC power, or specified Icom's battery pack • Digital transmission speed : 4.8 kbps • Voice coding speed : 2.4 kbps • Current drain (at 7.4 V DC) : ...
Service Manual
Page 8
... Remove with chassis from the LOGIC UNIT. 5) Unsolder 6 points at cable and connector when separating the LOGIC UNIT from the LOGIC UNIT. "ICOM Driver (Q)" (8960000370) Outer dial 4) Remove 6 screws from the front panel. Screws x5 UNSOLDER Solder remover 2) Remove 2 screws from the front... panel. SECTION 3. REMOVING THE LOGIC UNIT 1) Remove 2 dials and antenna nut from the bottom of the CHASSIS up )25 flat cable )25 For easy separation of the CHASSIS Use a suction lifter to lift the ...
... Remove with chassis from the LOGIC UNIT. 5) Unsolder 6 points at cable and connector when separating the LOGIC UNIT from the LOGIC UNIT. "ICOM Driver (Q)" (8960000370) Outer dial 4) Remove 6 screws from the front panel. Screws x5 UNSOLDER Solder remover 2) Remove 2 screws from the front... panel. SECTION 3. REMOVING THE LOGIC UNIT 1) Remove 2 dials and antenna nut from the bottom of the CHASSIS up )25 flat cable )25 For easy separation of the CHASSIS Use a suction lifter to lift the ...
Service Manual
Page 9
Screws x5 Screws x6 MAIN UNIT AIN UNIT Shield plate Chassis 3 - 2 UNSOLDER Solder remover Shield plate 2) Remove 5 screws from the shield plate, and then remove it. 4) Remove 6 screws from the MAIN UNIT, and then remove the MAIN UNIT from the chassis. UNSOLDER Solder remover 3) Unsolder a point at the antenna connector. 2. REMOVING THE MAIN UNIT 1) Unsolder 2 points on the shield plate.
Screws x5 Screws x6 MAIN UNIT AIN UNIT Shield plate Chassis 3 - 2 UNSOLDER Solder remover Shield plate 2) Remove 5 screws from the shield plate, and then remove it. 4) Remove 6 screws from the MAIN UNIT, and then remove the MAIN UNIT from the chassis. UNSOLDER Solder remover 3) Unsolder a point at the antenna connector. 2. REMOVING THE MAIN UNIT 1) Unsolder 2 points on the shield plate.
Service Manual
Page 10
... D642,D643 RF AMP Q641 -Band A:380M~479MHz- SECTION 4. CIRCUIT DESCRIPTION 4-1 RECEIVE CIRCUITS RF CIRCUITS VHF BAND (108-174 MHz) The RF signal from the antenna is passed through the HPF (L512, L514, C545, C548, C550, C551 and C554), two LPFs (L511, C536, C539 and L507, C524, C526, C529), ANT SW... the RF AMP (Q601). AGC BPF Q49,Q50,D34 D605,D606 D604 -Band B:380M~479MHz- UHF BAND (380-479 MHz) The RF signal from the antenna is passed through two LPFs (L513, L515, L516, C547, C549, C553, C555 and C556), ANT SW (D506, D903) and BPF (L705, L706, L909, C724 and...
... D642,D643 RF AMP Q641 -Band A:380M~479MHz- SECTION 4. CIRCUIT DESCRIPTION 4-1 RECEIVE CIRCUITS RF CIRCUITS VHF BAND (108-174 MHz) The RF signal from the antenna is passed through the HPF (L512, L514, C545, C548, C550, C551 and C554), two LPFs (L511, C536, C539 and L507, C524, C526, C529), ANT SW... the RF AMP (Q601). AGC BPF Q49,Q50,D34 D605,D606 D604 -Band B:380M~479MHz- UHF BAND (380-479 MHz) The RF signal from the antenna is passed through two LPFs (L513, L515, L516, C547, C549, C553, C555 and C556), ANT SW (D506, D903) and BPF (L705, L706, L909, C724 and...
Service Manual
Page 13
... applied to the radio IC (IC441, pin 2), through the ATT (D908) and limiter (D904). • AM BAND (0.52-1.71 MHz) The RF signal from the antenna or earphone is applied to be decoded into the digital audio signal. The digital audio signal is amplified by the DSP (IC18, pins... B The demodulated AF signal is applied to the RF AMP (Q780). RADIO RECEIVE CIRCUITS • FM BAND (76-108 MHz) The RF signal from the antenna is output to the RF AMP (Q908).
... applied to the radio IC (IC441, pin 2), through the ATT (D908) and limiter (D904). • AM BAND (0.52-1.71 MHz) The RF signal from the antenna or earphone is applied to be decoded into the digital audio signal. The digital audio signal is amplified by the DSP (IC18, pins... B The demodulated AF signal is applied to the RF AMP (Q780). RADIO RECEIVE CIRCUITS • FM BAND (76-108 MHz) The RF signal from the antenna is output to the RF AMP (Q908).
Service Manual
Page 15
... L511, C536, C539) and HPF (L512, L514, C545, C548, C550, C551 and C554), before being applied to the antenna. The TX signal is sequentially amplified by the YGR (Q39), drive AMP (Q41) and power AMP (Q45). ... D503,D504 D506,D903 LPF ANT SW LPF D505,D509 PWR DET PWR DET D512,D513 LPF ANTENNA TX:400.000M~479.000MHz RX:380.000M~479.000MHz LPF HPF TX:136.000M~174.000MHz ...(IC14B, pin 6), and the output voltage controls the bias voltages of the ATT (D20 and D21) to the antenna. • While operating on the VHF band The amplified TX signal is passed through the buffer (Q48)...
... L511, C536, C539) and HPF (L512, L514, C545, C548, C550, C551 and C554), before being applied to the antenna. The TX signal is sequentially amplified by the YGR (Q39), drive AMP (Q41) and power AMP (Q45). ... D503,D504 D506,D903 LPF ANT SW LPF D505,D509 PWR DET PWR DET D512,D513 LPF ANTENNA TX:400.000M~479.000MHz RX:380.000M~479.000MHz LPF HPF TX:136.000M~174.000MHz ...(IC14B, pin 6), and the output voltage controls the bias voltages of the ATT (D20 and D21) to the antenna. • While operating on the VHF band The amplified TX signal is passed through the buffer (Q48)...
Service Manual
Page 19
... 2.5 (d) mm plug 82 kΩ AUDIO GENERATOR (300-3000 Hz/1-500 mV) PTT +− Less than 4.5 (d) mm (EXTMIC) 33 k + 4.7 µF AC MILLIVOLTMETER (10 mV to the antenna connector. SECTION 5. Frequency : 1 kHz Level : 90 mVrms +− Waveform : Sine wave ¤ CONNECTION Standard signal generator -20 to 90 dBµ (-127 dBm to -17...
... 2.5 (d) mm plug 82 kΩ AUDIO GENERATOR (300-3000 Hz/1-500 mV) PTT +− Less than 4.5 (d) mm (EXTMIC) 33 k + 4.7 µF AC MILLIVOLTMETER (10 mV to the antenna connector. SECTION 5. Frequency : 1 kHz Level : 90 mVrms +− Waveform : Sine wave ¤ CONNECTION Standard signal generator -20 to 90 dBµ (-127 dBm to -17...
Service Manual
Page 21
... OPERATION DRIVE AMP IDLING CURRENT (At 5.5 V) [ID5] 1 1) Set the power supply voltage to 5.5 V. 2) Connect an RF power meter to the antenna connector. 3) Connect an ammeter between the power supply and transceiver. 2 • While transmitting, adjust the idling current using [DIAL], and then push to ...FINAL AMP IDLING CURRENT (At 5.5 V) VHF UHF [IP5] 1 1) Set the power supply voltage to 5.5 V. 2) Connect an RF power meter to the antenna connector. 3) Connect an ammeter between the power supply and transceiver. 4) Set the item [IP5] to store the adjustment value. VHF UHF 2 • ...
... OPERATION DRIVE AMP IDLING CURRENT (At 5.5 V) [ID5] 1 1) Set the power supply voltage to 5.5 V. 2) Connect an RF power meter to the antenna connector. 3) Connect an ammeter between the power supply and transceiver. 2 • While transmitting, adjust the idling current using [DIAL], and then push to ...FINAL AMP IDLING CURRENT (At 5.5 V) VHF UHF [IP5] 1 1) Set the power supply voltage to 5.5 V. 2) Connect an RF power meter to the antenna connector. 3) Connect an ammeter between the power supply and transceiver. 4) Set the item [IP5] to store the adjustment value. VHF UHF 2 • ...
Service Manual
Page 22
... DRIVE AMP IDLING CURRENT (At 7.4 V) VHF (Hi power) 1 1) Set the power supply voltage to 7.4 V. 2) Connect an RF power meter to the antenna connector. 3) Connect an ammeter between the power supply and transceiver. 4) Set the item [IP7] to "00." 2 • While transmitting, adjust the idling ...current using [DIAL], and then push to the antenna connector. 3) Connect an ammeter between the power supply and transceiver. VHF (Hi power) 2 • While transmitting, adjust the idling current using [DIAL...
... DRIVE AMP IDLING CURRENT (At 7.4 V) VHF (Hi power) 1 1) Set the power supply voltage to 7.4 V. 2) Connect an RF power meter to the antenna connector. 3) Connect an ammeter between the power supply and transceiver. 4) Set the item [IP7] to "00." 2 • While transmitting, adjust the idling ...current using [DIAL], and then push to the antenna connector. 3) Connect an ammeter between the power supply and transceiver. VHF (Hi power) 2 • While transmitting, adjust the idling current using [DIAL...
Service Manual
Page 23
...IDLING CURRENT (At 13.5 V) 1 1) Set the power supply voltage to 13.5 V. (supplying from [DC IN]) 2) Connect an RF power meter to the antenna connector. 3) Connect an ammeter between the power supply and transceiver. 4) Set the item [IP1] to "00." VHF (Hi power) 2 • While transmitting,... CURRENT (At 13.5 V) 1 1) Set the power supply voltage to 13.5 V. (supplying from [DC IN]) 2) Connect an RF power meter to the antenna connector. 3) Connect an ammeter between the power supply and transceiver. VHF (Hi power) 2 • While transmitting, adjust the idling current using [DIAL], and...
...IDLING CURRENT (At 13.5 V) 1 1) Set the power supply voltage to 13.5 V. (supplying from [DC IN]) 2) Connect an RF power meter to the antenna connector. 3) Connect an ammeter between the power supply and transceiver. 4) Set the item [IP1] to "00." VHF (Hi power) 2 • While transmitting,... CURRENT (At 13.5 V) 1 1) Set the power supply voltage to 13.5 V. (supplying from [DC IN]) 2) Connect an RF power meter to the antenna connector. 3) Connect an ammeter between the power supply and transceiver. VHF (Hi power) 2 • While transmitting, adjust the idling current using [DIAL], and...
Service Manual
Page 24
... TRANSMIT POWER -VHF(BAND LOW) (BAND HIGH) [PO5] 1 1) Set the power supply voltage to 5.5 V. 2) Connect an RF power meter to the antenna connector. 2 3) While transmitting, adjust the TX power using [DIAL], and then push to store the adjustment value. [BAND HIGH] 3 -UHF- 4 (Hi... ADJUSTMENT ITEM OPERATION TRANSMIT POWER -VHF(Hi power) [BAND LOW] 1 1) Set the power supply voltage to 7.4 V. 2) Connect an RF power meter to the antenna connector. 2 • While transmitting, adjust the TX power using [DIAL], and then push to store the adjustment value. 3 -UHF- 4 (BAND LOW) (...
... TRANSMIT POWER -VHF(BAND LOW) (BAND HIGH) [PO5] 1 1) Set the power supply voltage to 5.5 V. 2) Connect an RF power meter to the antenna connector. 2 3) While transmitting, adjust the TX power using [DIAL], and then push to store the adjustment value. [BAND HIGH] 3 -UHF- 4 (Hi... ADJUSTMENT ITEM OPERATION TRANSMIT POWER -VHF(Hi power) [BAND LOW] 1 1) Set the power supply voltage to 7.4 V. 2) Connect an RF power meter to the antenna connector. 2 • While transmitting, adjust the TX power using [DIAL], and then push to store the adjustment value. 3 -UHF- 4 (BAND LOW) (...
Service Manual
Page 25
ADJUSTMENT ADJUSTMENT ITEM OPERATION TRANSMIT POWER - 1 1) Set the power supply voltage to 13.5 V. (supplying from [DC IN]) 2) Connect an RF power meter to the antenna connector. -VHF(Hi power) [BAND LOW] 2 • While transmitting, adjust the TX power using [DIAL]. 5-3 TRANSMIT ADJUSTMENT (Continued) • TRANSMIT POWER ADJUSTMENT (at 13.5 V) Select ...
ADJUSTMENT ADJUSTMENT ITEM OPERATION TRANSMIT POWER - 1 1) Set the power supply voltage to 13.5 V. (supplying from [DC IN]) 2) Connect an RF power meter to the antenna connector. -VHF(Hi power) [BAND LOW] 2 • While transmitting, adjust the TX power using [DIAL]. 5-3 TRANSMIT ADJUSTMENT (Continued) • TRANSMIT POWER ADJUSTMENT (at 13.5 V) Select ...
Service Manual
Page 26
..., adjust the deviation using [DIAL], and then push to store the adjustment value. 3 [BAND HIGH] -UHF[BAND LOW] 4 [DVV] 5 ±0.95 to the antenna connector through an attenuator, and set it as ; HPF : OFF - 5-3 TRANSMIT ADJUSTMENT (Continued) • DEVIATION ADJUSTMENTS Select an adjustment item using / , and then set... (BAND LOW)] [FM-N (BAND LOW)] [FM (BAND HIGH)] - [MFL] [MNL] [MFH] 1 1) Set the power supply voltage to 7.4 V. 2) Connect a modulation analyzer to the antenna connector through an attenuator, and then set it as specified using [DIAL].
..., adjust the deviation using [DIAL], and then push to store the adjustment value. 3 [BAND HIGH] -UHF[BAND LOW] 4 [DVV] 5 ±0.95 to the antenna connector through an attenuator, and set it as ; HPF : OFF - 5-3 TRANSMIT ADJUSTMENT (Continued) • DEVIATION ADJUSTMENTS Select an adjustment item using / , and then set... (BAND LOW)] [FM-N (BAND LOW)] [FM (BAND HIGH)] - [MFL] [MNL] [MFH] 1 1) Set the power supply voltage to 7.4 V. 2) Connect a modulation analyzer to the antenna connector through an attenuator, and then set it as specified using [DIAL].
Service Manual
Page 27
...] 6 [BAND HIGH] 7 VALUE - ADJUSTMENT ADJUSTMENT ITEM OPERATION DV BALANCE -VHF[BAND LOW] [BAND CENTER] 1 1) Set the power supply voltage to 7.4 V. 2) Connect a modulation analyzer to the antenna connector through an attenuator, and then set the adjustment value as ; -
...] 6 [BAND HIGH] 7 VALUE - ADJUSTMENT ADJUSTMENT ITEM OPERATION DV BALANCE -VHF[BAND LOW] [BAND CENTER] 1 1) Set the power supply voltage to 7.4 V. 2) Connect a modulation analyzer to the antenna connector through an attenuator, and then set the adjustment value as ; -
Service Manual
Page 28
... ±0.8 push to ±1.85 kHz 5 - 10 ADJUSTMENT ADJUSTMENT ITEM OPERATION VALUE TONE DEVIATION 1 1) Set the power supply voltage to 7.4 V. 2) Connect a modulation analyzer to the antenna connector through an attenuator, and then set the adjustment value as ; - 5-3 TRANSMIT ADJUSTMENT (Continued) • TONE DEVIATION ADJUSTMENTS Select an adjustment item using / , and then...
... ±0.8 push to ±1.85 kHz 5 - 10 ADJUSTMENT ADJUSTMENT ITEM OPERATION VALUE TONE DEVIATION 1 1) Set the power supply voltage to 7.4 V. 2) Connect a modulation analyzer to the antenna connector through an attenuator, and then set the adjustment value as ; - 5-3 TRANSMIT ADJUSTMENT (Continued) • TONE DEVIATION ADJUSTMENTS Select an adjustment item using / , and then...