(Replacement page) Oct. 2010 SECTION 1. SPECIFICATIONS D General D Transmitter overage : Varia (unit: eviation U.S.A. 144–148 136–174* 136–174* Ω ⁄ D Receiver 144–146 144–146 ranteed: range range : 5 10 12.5 15 20 25 30 and Ω Inter : 0.75 Ω...
Page 39
8. READ the instructions of test equipment throughly before connecting a test equipment to the transceiver. Icom, Icom Inc. and the Icom logo are registered trademarks of Icom Incorporated (Japan) in Japan, the United States, the United Kingdom, Germany, France, Spain, Russia and/or other countries.
Page 41
(–20°C to +60°C; –4°F to +140°F) : 0.45 W typ. with a 8 Ω load External speaker • Power supply : Icom specified battery pack/case ˝)/8 Ω • External speaker connector : 3-conductor 3.5(d) mm; ( ⁄ • Current drain (at 7.2 V DC: typical)
Page 42
SECTION 2. INSIDE VIEWS • MAIN UNIT (TOP VIEW) ANALOG SW (IC4) APC CTRL/ MIC AMP/ LPF/HPF 2ND IF FILTERS (IC3) (FI1 and FI3) TX PRE-DRIVE AMP (Q3) INTERNAL MIC IF 1ST AMP CONTROLLER (Q14) (Q82) TONE FILTER BUFFER (Q53) (Q7) REFERENCE FREQ.
Page 43
• MAIN UNIT (BOTTOM VIEW) RF AMP (Q12) AF AMP (IC5) AF AMP CONTROLLER (Q15) MIC AMP (IC13) 1ST IF MIXER (Q13) MIC GAIN CONTROLLER TX POWER AMP (Q81) (Q1) D/A CONVERTER (IC10) TX DRIVE AMP (Q2) IF DEMODULATOR IC (IC2) LOOP FILTER SW (Q58)
Page 44
SECTION 3. DISASSEMBLY INSTRUCTION 1. REMOVING THE CHASSIS 4) CAREFULLY lift the chassis out of the FRONT PANEL 1) Remove the ANT connector nut and knob. and turn it over in order to unplug the speaker wire. ANT CONNECTOR NUT SPEAKER WIRE 2.
Page 45
SECTION 4. CIRCUIT DESCRIPTION 4-1 RECEIVER CIRCUITS RF CIRCUITS 2ND IF CIRCUITS AND DEMODULATOR The RX signal from the antenna is passed through the LPF, IC2 is the IF demodulator IC which contains the 2nd IF antenna SW (D1 and D2) and limiter (D50), then filtered by mixer, 2nd IF AMP, FM detector, etc.
4-2 TRANSMITTER CIRCUITS 4-3 FREQUENCY SYNTHESIZER CIRCUITS TX AF CIRCUITS The oscillation frequency of the VCO is determined by the variable capacitors (D59 and D60). While transmitting, D58 The audio signal from the internal or external microphone is ON, and C461 and C462 provide the RF path to GND. (MIC signal) is applied to the MIC AMP (IC13B).
Page 47
4-5 PORT ALLOCATIONS • CPU (IC8) LINE LINE Pin No. DESCRIPTION Pin No. DESCRIPTION NAME NAME MIC mute switching. Microphone voice input detect. MMUT L=MIC mute. Remaining battery voltage. DTMF/1750 Hz tones and beep TEMP The temperature sensing voltage. TONE sounds.
SECTION 5. ADJUSTMENT PROCEDURE 5-1 PREPARATION EQUIPMENT GRADE AND RANGE EQUIPMENT GRADE AND RANGE Voltage range : 1–12 V DC Power supply JIG cables (See the illust shown below) Current capacity : 3 A Measuring range : 0.1–10 W Frequency range : 0.1–300 MHz RF power meter Frequency range...
Page 49
M ENTERING ADJUSTMENT MODE 1) Turn the power OFF. 2) Connect the JIG cable "#1" (See the page 5-1) to the [SP] jack. 3) While pushing [Y], [Z] and [VFO/MR/CALL], turn the power ON. To [SP] JIG cable “#1” (See the page 5-1) [VFO/MR/CALL] M KEY ASSIGNMENTS FOR THE ADJUSTMENT MODE Adjusts the value for the item...
Page 50
5-2 FREQUENCY ADJUSTMENT 1) Select an adjustment item using [Y]/[Z]. 2) Set or modify the adjustment value as specifi ed using [DIAL], then push [ENT] TRANSCEIVER’S ADJUSTMENT ADJUSTMENT OPERATION VALUE CONDITION ITEM REFERENCE 1 • Frequency : 146.000 MHz • Loosely couple a frequency counter 146.0000 MHz FREQUENCY •...
5-3 TRANSMIT ADJUSTMENTS 1) Select an adjustment item using [Y]/[Z]. 2) Set or modify the adjustment value as specifi ed using [DIAL], then push [ENT] TRANSCEIVER’S ADJUSTMENT ADJUSTMENT OPERATION VALUE CONDITION ITEM TX OUTPUT 1 • Frequency : 146.000 MHz •...
Page 52
5-3 TRANSMIT ADJUSTMENTS (continued) 1) Select an adjustment item using [Y]/[Z]. 2) Set or modify the adjustment value as specifi ed using [DIAL], then push [ENT] TRANSCEIVER’S ADJUSTMENT ADJUSTMENT OPERATION VALUE CONDITION ITEM 1 • Frequency : 144.000 MHz 1) Connect a modulation analyzer to ±4.1 to ±4.3 DEVIATION •...
5-4 RECEIVE ADJUSTMENTS 1) Select an adjustment item using [Y]/[Z]. 2) Set or modify the adjustment value as specifi ed using [DIAL], then push [ENT] TRANSCEIVER’S ADJUSTMENT ADJUSTMENT OPERATION VALUE CONDITION ITEM RX SENSITIVITY 1 NOTE: When "RX SENSITIVITY" is re-adjusted, "S-METER" must be re-adjusted too. (Band low) •...
Page 54
SECTION 6. PARTS LIST [MAIN UNIT] [MAIN UNIT] PARTS PARTS DESCRIPTION DESCRIPTION LOCATION LOCATION 1130008351 S.IC LV2105V-TLM-E 51.1/28.4 1750001810 S.DIO L1SS400T1G <SLVJ> [EUR] B 87.9/43.9 1110007320 S.IC NJM2591V-TE1-#ZZZB 49.5/40.3 1750001810 S.DIO L1SS400T1G <SLVJ> [EUR-21] 1110006470 S.IC LMV324IPWR 29.6/29.6 1750001810 S.DIO L1SS400T1G <SLVJ>...
Page 55
[MAIN UNIT] [MAIN UNIT] PARTS PARTS DESCRIPTION DESCRIPTION LOCATION LOCATION 7030004980 S.RES ERJ2GEJ 101 X (100) 35.7/19.5 R257 7030005110 S.RES ERJ2GEJ 224 X (220K) 22.1/32.8 7030005720 S.RES ERJ2GEJ 563 X (56K) 23.4/21.3 R258 7030005090 S.RES ERJ2GEJ 104 X (100K) 9.9/27.1 7030005120 S.RES ERJ2GEJ 102 X (1K) 25.2/25.6 R259...
Page 59
The combination of top side and bottom side of this SECTION 8. BOARD LAYOUTS • MAIN UNIT (TOP VIEW) C165 R324 R327 R323 R325 C369 R318 R326 R336 R244 C127 C181 C395 C232 C217 C156 C391 R176 R181 C124 C304 C394 C126 R266...
Page 60
The combination of top side and bottom side of this [SP] [MIC] • MAIN UNIT (BOTTOM VIEW) R334 C147 C209 C385 R130 EP11 C180 C121 R219 C303 C174 C120 EP10 R133 R131 R132 C183 C220 R208 R139 C119 C151 C161 R238 C118 C117...
Page 61
SECTION 9. BLOCK DIAGRAM VCO5 VCO5 Rx:114.300-152.300MHz Tx;136.000-174.000MHz Q76:2SC4226 D59:HVC375B D 3:HVD144 D 1:HVD144 IC1:LV2105V RD01MUS1 RD07MUS2B ( 21.25MHz) D60:HVC375B D 4:HVD144 (TX power detect) D 2:HVD144 D61:KDV214E REF. LOOP DRIVE BUFF DRIVE ADJ. AM P AM P AM P Tx;136.000-174.000MH z Rx;136.000-174.000MHz Q6:2SC4226...
Need help?
Do you have a question about the IC-V80E and is the answer not in the manual?
Questions and answers