Type of emission Number of memory channels Frequency resolution Antenna connector Operating temperature range Frequency stability Power supply requirement (negative ground) Current drain (at 7.2 V DC ; approx.)
Dimensions (Projections not included) Weight (approx.)

M TRANSMITTER

Output power (at 7.2 V DC) Modulation system Maximum frequency deviation Spurious emissions Microphone connector : 5.5 W (High)/4 W (Middle)/0.5 W (Low) [Thailand] 7 W (High)/4 W (Middle)/0.5 W (Low) [Others] : Variable reactance frequency modulation : 5.0 kHz : Less than 60 dBc : 3-conductor 2.5 (d) mm (110)/2.2 k

M RECEIVER

Receive system Intermediate frequencies Sensitivity Squelch sensitivity Selectivity Spurious and image rejection Intermodulation Audio output power (at 7.2 V DC) External speaker connector : : : : : : : : : Double conversion superheterodyne 1st: 46.35 MHz, 2nd: 450 kHz Less than 0.2 V (at 12 dB SINAD) Less than 0.16 V (at threshold) More than 55 dB More than 60 dB More than 55 dB More than 0.3 W at 10% distortion with an 8 load 3-conductor 3.5 (d) mm (18)/8
All stated specifications are subject to change without notice or obligation.

SECTION 2

LOGIC UNIT

INSIDE VIEWS

REGULATOR (IC12: S-812C50AMC) AF POWER AMPLIFIER (IC23: TA7368F) LCD DRIVER (IC22: LC75834W) CPU CLOCK (X2: CR-836) EEPROM (IC7: S24CS64A) CPU (IC8: M30620) TX/RX AF LPF (IC3: LMV324IPW) TX/RX AF SWITCH (IC4: CD4066BPWR)

RF UNIT (TOP VIEW)

RF UNIT (BOTTOM VIEW)
DC switch (Q4: HAT1026) Power amp. (Q1: RD12MVS1) Drive amp. (Q2: RD01MUS1)
2nd IF filter (FI2: LTWC450E) IF IC (IC2: TA31136FNG)
D/A converter (IC10: M62363FP)

PLL IC (IC19: MB15E03SL)

Descriminator (X3: JTBM450CX24)

SECTION 3

1. Removing the front panel

DISASSEMBLY INSTRUCTION

3. Removing shield plate
q Unscrew 2 screws A. w Unsolder 2 points B, and remove the shield plate from the RF UNT.
q Remove the knob A and jack cap B. w Unscrew the Antenna nut and 4 screws C and D. e Disconnect the speaker connector. r Take off the chassis in the direction of the arrow. Chassis

Shield plate

RF UNIT

Speaker connector

Ant. nut

Front panel

2. Removing the LOGIC UNIT
q Remove the rubber seal and dial nut. w Unscrew 5 screws A. e Disconnect the flat cable from J7. r Remove the LOGIC UNIT from the chassis in the direction of the arrow.

4. Removing the RF UNIT

q Unscrew 5 screws A. w Unsolder 4 points B (contact spring). e Unsolder 1 point C (antenna connector), and remove the RF UNIT from the chassis.

LOGIC UNIT

Jack plate

A A B C

Dial nut

Flat cable RF UNIT

Chassis

Rubber seal

SECTION 4

4-1 RECEIVER CIRCUITS

CIRCUIT DESCRIPTION
(Q13) and converted into the fixed frequency of 1st IF signal by mixing with the 1st Local Oscillator (LO) signals from the VCO (Q76, D59D61). By changing the 1st LO frequency, only the desired frequency will pass through a pair of crystal filters at the next stage of the mixer. By changing LO frequency, the frequency of the 1st IF signal is fixed one for the receiving frequency. The converted 1st IF signal is passed through the BPF (FI1) and limiter (D63), then amplified by the 1st IF amplifier (Q14). The amplified 1st IF signal is applied to the IF IC (IC2, pin 16).
ANTENNA SWITCHING The antenna switching circuit toggles the receive (RX) line and transmit (TX) line. The received signals from the antenna are passed through a two-staged Low-Lass Filter (LPF; L1, L2, C1C5) and then applied to the antenna switch (D1, D2, D8, L15, L58, C52, C76, C516). While transmitting, the voltage on the T5V line is applied to D1, D2 and D8, and these are ON. Thus the TX line is connected to the antenna. Simultaneously, the RX line is connected to the GND to prevent transmit signal entering. While receiving, no voltage is applied to the D1, D2 and D8, and these are OFF. Thus the TX line and the antenna is disconnected to prevent received signals entering. Simultaneously, the RX line is disconnected from the GND and the received signals are passed through the LPF (L15, L58, C52, C76, C516). The ltered signals are applied to the RF circuits.
2ND IF CIRCUITS (RF UNIT) The 1st IF signal is converted into the 2nd IF signal and demodulated. The 1st IF signal from the 1st IF circuits are converted into the 2nd IF signal at the 2nd mixer section of the IF IC (IC2), by mixing with the 2nd LO signal which is generated at the reference frequency oscillator (X4) after being passed through the PLL IC (IC19, pins 1, 2) and the tripler (Q81). The converted 2nd IF signal is output from pin 3 and passed through the BPF (FI2) to remove the sideband noise, then applied to the 2nd IF amplifier section in IC2 (pin 5). The amplified 2nd IF signal is then applied to the FM-detector section. The demodulated AF signals are output from pin 9 and applied to the AF circuits.

R5V X3

SQUELCH CIRCUIT (RF AND LOGIC UNITS) - NOISE SQUELCH The noise squelch mutes the AF output when no RF signals are received. By detecting noise components (around 30 kHz signals) in the demodulated AF signals, the squelch circuit toggles the mute switch and AF power amplier ON and OFF. A portion of the AF signals from the IF IC (RF UNIT; IC2, pin 9) are passed through the D/A converter (RF UNIT; IC10, pins 23, 24) for level adjustment. The level adjusted AF signals are applied to the noise filter section (RF UNIT; IC2, pins 7, 8; R86R88, C121, C122) which allows only noise components to pass. The filtered noise components are amplified at the noise amplifier section, and rectified into the DC voltage which is proportional to the noise signal level, at the noise detector section, then output from pin 13 as the NOIS signal.
The NOIS signal is applied to the CPU (LOGIC UNIT; IC8, pin 17), and the CPU compares the NOISE signal and set reference level (squelch threshold level). When the input NOIS signal is higher than reference level, the CPU cuts off AFON signal (from pin 4) to the AF power amplifier control circuit (LOGIC UNIT; Q14Q16) to deactivate the AF power amplifier (LOGIC UNIT; IC23).
- TONE SQUELCH The tone squelch circuit detects tone signals and opens the squelch only when receiving a signal containing a matched sub audible tone. When the tone squelch is in use, and a signal with a mismatched or no subaudible tone is received, the tone squelch circuit mutes the AF signals even when the noise squelch is open. A portion of the demodulated AF signals is passed through the LPF (LOGIC UNIT; Q53) to filters CTCSS/DTCS signal. The filtered signal is applied to the CPU (LOGIC UNIT; IC8, pin 93). The CPU compares the applied signal and the set CTCSS/DTCS, then the CPU controls the status (Low or High) of AFON signal as NOISE SQUELCH.

AF and MIC amp. CIRCUITS

Demodulated AF signals From IF IC (IC2, pin 9) IC3

IC23 AMP

HPF IC3

IC3 LPF

D/A converter
AF signals From the microphone

10 Pre-

IC4 MMUTE MICS

LOGIC UNIT RF UNIT

4-2 TRANSMITTER CIRCUITS
MICROPHONE AMPLIFIER CIRCUITS (LOGIC UNIT) The AF signals from the microphone (MIC signals) are ltered and level-adjusted at microphone amplier circuits. Audio signals from the microphone (MC1) are applied to IC3 (pin 10) which combines a microphone amplifier and preemphasis circuit. The MIC signals are amplified and filtered to obtain +6 dB/oct of frequency characteristic by IC3. The amplified and emphasized MIC signals are output from the pin 8, and passed through the splatter filter (IC3, pins 13, 14) which suppresses 3 kHz and higher audio components, via the TX/RX switch (IC4, pins 3, 4; 8, 9). The filtered MIC signals are then applied to the modulation circuit.

- TONE SIGNALS CTCSS/DTCS signals are output from CPU (LOGIC UNIT; IC8, pin 2) and passed through the LPF (R224, R227, C219), then applied to the LPF (as the AF mixeRF UNIT; IC3, pin 13) to be mixed with MIC signals. The mixed CTCSS/DTCS signals are applied to modulation circuits as MIC SIGNALS.
TRANSMIT AMPLIFIERS (RF UNIT) The transmit signal from the buffer amplier (Q74) is amplied to the transmit output level by the transmit ampliers. The buffer-amplified VCO output signal is amplified by transmit amplifiers; pre-drive (Q3), drive (Q2) and power (Q1) amplifiers in sequence, after being passed through the TX/RX switch (D3). The power-amplified transmit signal is passed through the power detector (D32, D33), antenna switch (D1) and LPF (as a harmonic filter ; L1, L2, C1C5), before being emitted from the antenna.
MODULATION CIRCUITS (RF UNIT) - MIC SIGNALS The modulation circuits modulates the VCO oscillating signal using the modulation signals. The MIC signals from AF circuits are passed through the D/A converter (IC10, pins 21, 22) for level (deviation) adjustment. The level adjusted MIC signals are applied to the variable capacitor (D61) in the VCO (Q76, D59D61), and modulate the VCO oscillating signal by changing the reactance of D61. The modulated VCO output are bufferamplified by Q75 and Q74, then applied to the transmit amplifier as a transmit signal.
APC (Automatic Power Control) CIRCUIT (RF UNIT) The APC (Automatic Power Control) circuit prevents the transition of the transmit output power level which is caused by load mismatching or heat effect, etc. At the power detector (D32, D33), a portion of the transmit signal is rectified into DC voltage which is proportional to the transmit power level. The rectified voltage is applied to the inverted input terminal of the operational amplifier (IC26, pin 2). The voltage T3 from the D/A converter (IC10, pin 10) is applied to the noninverted input terminal as the reference.
The operational amplifier compares the rectified voltage and reference voltage T3, and the difference of the voltage is output from the operational amplifier pin 1. The output voltage controls the bias of drive (Q2) and power (Q1) amplifiers for stable transmit output power. The change of transmit power is carried out by changing the reference voltage T3, and transmit muting (deactivation of drive and power amplifiers) is carried out by TX switch (Q37) controlled by TXC signal from CPU (LOGIC UNIT; IC8, pin 59).

APC CIRCUITS

VCO output from bufffer-amp (Q74) TX/RX SW D3 Q3

Pre-drv. AMP

Drv. AMP

PWR AMP

Power detector LPF

ANT SW LPF D1 PS5V

OP AMP 3

TXC T3

4-3 FREQUENCY SYNTHESIZER CIRCUITS

VCO (RF UNIT) VCO (Voltage Controlled Oscillator) is a oscillator whose oscillating frequency is controlled by adding voltage (lock voltage). VCO oscillates the both of transmit and 1st LO signals. The VCO output signals are buffer-amplified by Q74 and Q75. While receiving, the VCO output is passed through the TX/RX switch (D4) and the LPF (L29, L38, L59, C102, C435, C437, C539), then applied to the 1st mixer (Q13) to be mixed with the received signals to produce the 46.35 MHz 1st IF signal. While transmitting, the buffer-amplified VCO output is passed through the TX/RX switch (D3) and applied to the transmit amplifiers.
A portion of VCO output is applied to the PLL IC (IC19, pin 8) via buffer amplifiers (Q5, Q75). The applied signal is divided at the pre-scalar and programmable counter according to the control signals PLLSTB, PLLDATA and PLLCK from the CPU (L; IC8, pins 63, 65 and 66). The divided signal is phase-compared with the reference frequency signal from the reference frequency oscillator (X4), at the phase detector. The phase difference is output from pin 5 as a pulse type signal after being passed through the internal charge pump. The output signal is converted into the DC voltage (lock voltage) by passing through the loop filter (R445R448, C472C475, C519). The lock voltage is applied to the variable capacitors (D59 and D60) of VCO (Q76, D59D61) and locked to keep the VCO oscillating frequency constant. If the oscillated signal drifts, its phase changes from that of the reference frequency, causing a lock voltage change to compensate for the drift in the VCO oscillating frequency.
PLL (Phase Locked Loop) CIRCUIT (RF UNIT) The PLL circuit provides stable oscillation of the transmit frequency and receive 1st LO frequency. The PLL output frequency is controlled by the divided ratio (N-data) from the CPU.

PLL CIRCUITS

Buffer Q74 VCO Buffer Q75 Buffer Q5 PLL IC (IC19 )

5 Charge pump

D3 to transmitter circuits D4 to 1st mixer (Q13)
Q76, D59D61 Loop filter Programmable divider

Prescaler

PLLCK PLLDATA PLLSTB PLL control signals from CPU (LOGIC UNIT; IC8)
45.9 MHz 2nd LO signal to the FM IF IC (IC2, pin 2) 3 Q81

Phase detector

Shift register
15.3 MHz reference signal from reference frequency osciilator (X4)

: 0.1300 MHz : 20 to 90 dB (127 to 17 dBm) : 10 mV to 10 V : DC20 MHz : 0.0120 MHz :8 : More than 1 W : 30 or 40 dB : More than 10 W
Frequency range Standard signal Output level generator (SSG)

Frequency counter

AC millivoltmeter Measuring range : 0.1300 MHz : 1 ppm or better Frequency range : 100 mV or better Oscilloscope Measuring range : 30300 MHz : 0 to 10 kHz : 3003000 Hz : 1500 mV External speaker Attenuator Input impedance Capacity Power attenuation Capacity
Modulation analyzer Audio generator
CAUTION!: BACK UP originally programmed contents (Memory channels, Common settings, etc.) in the transceiver using optional
CS-V85 CLONING SOFTWARE before starting adjustment. When all adjustments are completed, these contents in the transceiver may be cleared.

CONNECTION

Standard Signal Generator 20 to 90 dB (127 dBm to 17 dBm) Attenuator 30 dB or 40 dB RF power meter 0.110 W/50 Modulation analyzer Frequency counter Oscilloscope

JIG cable

AC millivoltmeter Audio generator 300 Hz to 3 kHz

To [MIC] jack

MIC PTT
GND 3-conductor 2.5 (d) mm plug 3-conductor 3.5 (d) mm plug
JIG cable IC-V85 IC-V85E IC-V85-T To [SP] jack

Speaker (8 )

M ENTERING ADJUSTMENT MODE
q Turn the power OFF. w Connect the JIG cable to the [SP] jack (see page 5-1). e While pushing [Y], [Z] and [CLR] keys, turn the power ON. During adjustment mode, the function display shows adjustment item and frequency as below. (While rotating [CONTROL DIAL], adjustment value is displayed instead of adjustment item.)

Adjustment value

Adjustment item

Frequency

M KEY ASSIGNMENTS FOR THE ADJUSTMENT MODE
[CONTROL DIAL] Adjusts the value for the item manually.
Selects next adjustment item without storing the value.
PWR A B CALL P.BEEP C MR T.SCAN D CLR BANK
Selects previous adjustment item without storing the value.

FUNC TONE

SKIP OPT
Verifies the adjustment value.
Stores the adjustment value and move to next adjustment item. Adjusts the value for the item automatically.
M QUITTING ADJUSTMENT MODE

Turn the power OFF.

ADJUSTMENT
ADJUSTMENT REFERENCE FREQUENCY [Fr] ADJUSTMENT CONDITION OPERATION VALUE 1 Connect a RF Power Meter or a dummy load to the antenna connector. Loosely couple a Frequency Counter to the antenna connector. Transmitting Rotate [CONTROL DIAL] during transmit to 146.00000 MHz adjust the frequency, then release the [PTT] and push [CLR] key to store the adjustment value and select the next adjustment item. (automatic adjustment) 7.0 W except [THA] 5.5 W [THA] 4.0 W 0.5 W

LOCK VOLTAGE [LU] TRANSMIT OUTPUT POWER [Po] (H; High) (M; Middle) (L; Low) DEVIATION [dE]
1 Connect an RF Power Meter to the Push [CLR] key during transmit, then push [Y] to select the next adjustment item. antenna connector. Transmitting 1 Connect an RF Power Meter to the Rotate [CONTROL DIAL] during transmit antenna connector. to adjust the output power, then release the Transmitting [PTT] and push [CLR] key during transmit to store the adjustment value and select the next adjustment item. 2 Transmitting 3 Transmitting NOTE: REFERENCE FREQUENCY should be adjusted before DEVIATION. Otherwise, DEVIATION will not be adjusted properly. 1 Connect an Audio Generator and AC millivoltmeter to the MIC line (see page 5-1) and set as; Frequency : 1 kHz Level : 90 mVrms Connect a Modulation Analyzer to the antenna connector through an attenuator, and set as; HPF : OFF LPF : 20 kHz De-emphasis : OFF Detector : (PP)/2 Transmitting Rotate [CONTROL DIAL] during transmit to adjust the deviation, then release the [PTT] and push [CLR] key to store the adjustment value and select the next adjustment item.

4.2 kHz

Push [Y] to skip this item.
DTCS NOTE: "DEVIATION should be adjusted before DTCS MODULATION BALANCE. MODULATION Otherwise, DTCS MODULATION BALANCE will not be adjusted properly. BALANCE 1 Set the Modulation Analyzer same as Rotate [CONTROL DIAL] during transmit [dt] to arrange the wave form, then release the DEVIATION. Connect an Oscilloscope to the detector [PTT] and push [CLR] key during transmit to output ter minal of the Modulation store the adjustment value and select the next Analyzer. adjustment item. No audio signal is applied to the MIC line. Transmitting [bP]* RECEIVE SENSITIVITY [tr] (Band low) Push [Y] to skip this item. NOTE: REFERENCE FREQUENCY should be adjusted before RECEIVE SENSITIVITY. Otherwise, RECEIVE SENSITIVITY will not be adjusted properly. 1 Connect an SSG to the antenna connector Push [CLR] key to store the adjustment value and set as; and select the next adjustment item. Frequency : Displayed frequency Level : 0 dB (107 dBm) Modulation : 1 kHz Deviation : 3.5 kHz Receiving 2 Set the SSG as; Frequency : Displayed frequency Receiving 3 Set the SSG as; Frequency : Displayed frequency Receiving 1 Connect an 8 spaeker to the AFOUT line (see page 5-1). Set the SSG as; Level : 19 dB (126 dBm) Receiving Push [CLR] key to store the adjustment value and select the next adjustment item. Push [CLR] key to store the adjustment value and select the next adjustment item. Rotate [CONTROL DIAL] to close the squelch once, then rotate [CONTROL DIAL] to set the squelch level at the point where the audio signals just appear. Push [CLR] key to store the adjustment value and select the next adjustment item.

X2 R1 R2 R3 R4 R6 R7 R8 R9 R10 R11 R17 R19 R22 R44 R93 R94 R95 R97 R98 R99 R100 R101 R102 R103 R104 R107 R108 R109 R112 R113 R114 R115 R117 R120 R121 R122 R123
6050012470 S.XTL 7030005210 S.RES S.RES S.RES S.RES S.RES S.RES S.RES S.RES S.RES S.RES S.RES S.RES S.RES S.RES S.RES S.RES S.RES S.RES S.RES S.RES S.RES S.RES S.RES S.RES S.RES S.RES S.RES S.RES S.RES S.RES S.RES S.RES S.RES S.RES S.RES S.RES S.RES
4030016930 S.CER ECJ0EB1A104K
M.=Mounted side (T: Mounted on the Top side, B: Mounted on the Bottom side) S.=Surface mount
C7 C12 C28 C124 C125 C126 C128 C129 C131 C132 C134 C135 C137 C139 C144 C145 C147 C148 C150 C152 C153 C154 C161 C163 C164 C165 C166 C167 C168 C169 C171 C173 C174 C179 C193 C194 C195 C197 C199 C209 C212 C213 C214 C216 C217 C219 C230 C232 C245 C249 C282 C283 C296 C297 C299 C304 C305 C369 C370 C372 C373 C374 C375 C376 C377 C378 C379 C380 C381 C385 C399 C400 C401 C423 C424 C425 C426 C514 C515 C524 C525 C526 C527 C540 C541 C542 C543 C544 C545 C546 C547 C548 C549 C550 C551 C552 C553 C554 C555 J2 J3 J5
S.CER S.CER S.CER S.CER S.CER S.CER S.CER S.TAN S.CER S.CER S.CER S.CER S.CER S.CER S.CER S.ELE S.CER S.CER S.TAN S.CER S.ELE S.TAN S.CER S.CER S.CER S.CER S.CER S.CER S.CER S.CER S.CER S.ELE S.ELE S.CER S.CER S.CER S.CER S.CER S.CER S.CER S.CER S.TAN S.CER S.CER S.CER S.CER S.CER S.CER S.CER S.CER S.CER S.CER S.CER S.CER S.CER S.CER S.CER S.CER S.CER S.CER S.CER S.CER S.CER S.CER S.TAN S.CER S.CER S.ELE S.TAN S.CER S.CER S.CER S.CER S.CER S.CER S.CER S.CER S.CER S.CER S.CER S.CER S.CER S.CER S.CER S.CER S.CER S.CER S.CER S.CER S.CER S.CER S.CER S.CER S.CER S.CER S.CER S.TAN S.CER S.CER ECJ0EB1E102K ECJ0EB1E102K ECJ0EB1E102K ECJ0EB1C103K ECJ0EB1H222K ECJ0EB1H272K ECJ0EB1A104K TEESVA 1C 155M8R ECJ0EB1C103K ECJ0EB1E562K ECJ0EC1H181J ECJ0EB1E271K ECJ0EB1A333K ECJ0EB0J105K ECJ0EB1E102K EEE1AA330WR ECJ0EB1A473K C1608 JB 1A 105K-T TEESVA 1A 106M8R ECJ0EB1A473K 10 CE 150 BSS TEESVA 0J 156M8R ECJ0EB1C103K ECJ0EB1E102K ECJ0EB1E102K ECJ0EB1E102K ECJ0EB1E102K ECJ0EC1H470J ECJ0EB1E102K ECJ0EB1E102K ECJ0EB1A104K EEE1CA101WP EEE0JA220SR ECJ0EB1C103K ECJ0EC1H0R5B ECJ0EC1H080C ECJ0EC1H560J ECJ0EB1A104K ECJ0EB1A104K ECJ0EB1A104K ECJ0EB1C103K TEESVA 1A 225M8R ECJ0EB1A333K ECJ0EB1H392K ECJ0EB1A104K ECJ0EB1A333K ECJ0EB1A273K ECJ0EB1A104K ECJ0EB1C103K ECJ0EB1C103K ECJ0EB1E102K ECJ0EB1H222K ECJ0EB1E471K ECJ0EB1C103K ECJ0EB1E471K ECJ0EB1A473K ECJ0EB1E471K ECJ0EB1A333K ECJ0EB1H182K ECJ0EB1C223K ECJ0EB1E682K ECJ0EB1H222K ECJ0EB1E102K ECJ0EB1E102K TEESVB2 1A 226M8R ECJ0EB1A104K ECJ0EB1E102K EEE0JA220SR TEESVA 1A 106M8R ECJ0EB1A104K ECJ0EB1E332K ECJ0EB1H222K ECJ0EB1C103K ECJ0EB1A104K ECJ0EB1C103K ECJ0EB1C103K ECJ0EB1E102K C1608 JB 0J 225M-T ECJ0EB1A104K ECJ0EB1E102K ECJ0EB1E102K ECJ0EB1E102K ECJ0EB1E102K ECJ0EB1A333K ECJ0EB1H681K ECJ0EB1E102K ECJ0EB1E102K ECJ0EB1E102K ECJ0EB1A473K ECJ0EB1A473K ECJ0EB1A473K ECJ0EB1E102K ECJ0EB1E102K ECJ0EB1E102K ECJ0EB1E102K ECJ0EB1E102K TEESVA 1A 106M8R ECJ0EC1H470J ECJ0EB1E562K

C14 C15 C16 C17 C18 C19 C20 C21 C22 C23 C24 C25 C26 C30 C31 C32 C33 C34 C35 C36 C37 C38 C39 C41 C50 C52 C54 C70 C73 C75 C76 C79 C81 C82 C87 C88 C89 C90 C92 C93 C94 C95 C96 C97 C99 C102 C104 C105 C106 C107 C108 C110 C111 C112 C113 C114 C115 C116 C117 C118 C119 C120 C121 C122 C123 C138 C162 C173 C204 C205 C233 C234 C236 C243 C244 C251 C252 C277 C278 C281 C285 C287 C288 C289 C293 C298 C300 C301 C303 C351 C386 C387 C398 C412 C413 C421 C422 C429 C430 C433 C434 C435 C437 C438
S.CER S.CER S.CER S.CER S.CER S.CER S.CER S.TAN S.CER S.CER S.CER S.CER S.CER S.CER S.CER S.CER S.CER S.CER S.CER S.CER S.CER S.CER S.CER S.CER S.TAN S.CER S.CER S.CER S.CER S.CER S.CER S.CER S.CER S.CER S.CER S.CER S.CER S.CER S.CER S.CER S.CER S.CER S.CER S.CER S.CER S.CER S.CER S.CER S.CER S.CER S.CER S.CER S.CER S.CER S.CER S.CER S.CER S.CER S.CER S.CER S.CER S.CER S.CER S.CER S.CER S.CER S.CER S.ELE S.CER S.CER S.CER S.CER S.CER S.CER S.CER S.CER S.CER S.CER S.CER S.CER S.CER S.CER S.CER S.CER S.CER S.TAN S.CER S.CER S.CER S.CER S.CER S.CER S.TAN S.CER S.CER S.CER S.CER S.CER S.CER S.CER S.CER S.CER S.CER S.CER ECJ0EB1C103K C1608 CH 1H 470J-T ECJ0EB1E102K ECJ0EB1E102K ECJ0EB1E102K ECJ0EB1C103K ECJ0EB1E102K TEESVA 1C 475M8R ECJ0EC1H101J ECJ0EB1E102K ECJ0EB1E102K ECJ0EB1E102K ECJ0EB1E102K ECJ0EB1C223K ECJ0EC1H470J ECJ0EB1C223K ECJ0EB1E102K ECJ0EB1A104K C1608 JB 1H 103K-T ECJ0EB1E102K ECJ0EB1E102K ECJ0EC1H470J ECJ0EB1E102K ECJ0EC1H221J TEESVA 1A 106M8R C1608 CH 1H 390J-T ECJ0EB1E102K ECJ0EB1E102K ECJ0EB1A104K ECJ0EB1A104K C1608 CH 1H 180J-T ECJ0EC1H070C ECJ0EC1H221J ECJ0EB1E102K ECJ0EB1C103K ECJ0EB1E102K ECJ0EB1E102K ECJ0EB1E102K ECJ0EC1H121J ECJ0EB1E102K ECJ0EC1H010B ECJ0EB1E102K ECJ0EC1H820J ECJ0EC1H010B ECJ0EB1E102K ECJ0EC1H080C ECJ0EB1E102K ECJ0EB1C103K ECJ0EC1H180J ECJ0EB1E102K ECJ0EB1C103K ECJ0EC1H050B ECJ0EB1C103K ECJ0EB1E102K ECJ0EB1E102K ECJ0EB1A333K ECJ0EB1E102K ECJ0EC1H820J ECJ0EB1E102K ECJ0EB1C103K ECJ0EB0J105K ECJ0EB1A104K ECJ0EC1H221J ECJ0EC1H221J ECJ0EB1E102K ECJ0EB1E102K ECJ0EB1C103K EEE1CA101WP ECJ0EB1E102K C1608 JB 1H 102K-T ECJ0EB1E102K ECJ0EB1E102K ECJ0EB1C103K ECJ0EB1E102K ECJ0EB1C103K ECJ0EB1E102K ECJ0EB1E102K ECJ0EC1H680J C1608 CH 1H 180J-T C1608 CH 1H 331J-T C1608 CH 1H 240J-T C1608 CH 1H 220J-T ECJ0EB1E102K ECJ0EB1E102K ECJ0EB1A104K TEESVA 1A 475M8R ECJ0EB1E102K ECJ0EB1E102K ECJ0EB1E102K ECJ0EC1H040B ECJ0EC1H070C ECJ0EC1H030B TEESVA 1A 475M8R ECJ0EB1C103K ECJ0EB1E102K ECJ0EB1A104K ECJ0EB1A104K ECJ0EB0J105K ECJ0EB1C103K ECJ0EC1H180J ECJ0EC1H180J ECJ0EC1H150J ECJ0EC1H150J ECJ0EB1E102K

4030017640 4030017460

T T T T B T T T T T T T T T B T B T T T B B B B B B B B T T B B B B B B B B B B B B B B B B B B B B B B B B B B B B B B B B B B B B T T B B T T B T B T T B B B B B B T T B B B B B T T T T B B B B B T T B B B 17.1/37.9 25.7/36.2 9.9/46.9 25.4/32.5 27.4/33.1 16.9/33.3 13.5/37 15.1/37.2 26/26.8 26/22.6 21.1/23.9 24.8/22.2 23.9/20.6 20.6/50.4 33.3/7.8 10.9/47.9 33.2/5.5 12.2/53.2 20.4/52.2 20.6/49.5 35.2/5.7 41.1/7 40.4/2.9 40.4/4.5 3.5/9.8 39.2/42.4 10/10.5 31.6/8.6 31.6/35.5 30/35.5 36.4/45.1 37.2/36.1 37.6/34.8 42/33.9 31.6/32.4 31.6/33.3 33.4/29.4 29.4/33.8 35/28.9 38.6/28 33.8/26.6 38.8/23.5 35.1/24.8 35/28 33/18.2 31/22.1 28/25.9 28/26.8 25.1/22 30.2/27.8 31.1/27.8 15.8/24.2 7.7/20 14.5/30.1 12.5/30.1 14.3/26.9 13.9/23.7 13.9/28.1 4.6/27.1 11.5/30.1 4.6/26.2 4.6/28 6/30.1 7.9/30.1 42/18.5 36/31.1 41.4/20 30.3/22 30.1/39.4 32.2/42.9 6.4/20.5 6.4/22.4 38/19.5 32.5/38.4 39.3/18.7 30.6/45.7 31.4/40.5 34.2/33.2 29.7/42.3 30.2/46.7 28.9/46.7 33/50.5 30.1/38.5 13.5/38.6 16.4/17.7 27.8/37.6 25.1/11.3 3.1/13.4 13.9/25.3 25.4/23.9 6.6/23.7 7.9/22.2 36.4/21.7 32.5/27.1 4.9/5.7 4.8/30.1 10.6/30.1 7/11.9 7/10.1 23.7/16.7 26/20.8 31.5/20.9 30.8/16.5 30.8/13.4
C439 C440 C441 C442 C443 C444 C445 C446 C447 C448 C449 C450 C451 C452 C453 C454 C455 C456 C457 C458 C459 C460 C461 C462 C463 C464 C465 C466 C467 C471 C472 C473 C474 C475 C476 C478 C479 C482 C486 C487 C488 C489 C491 C492 C493 C496 C497 C499 C500 C502 C503 C504 C505 C506 C507 C509 C510 C511 C512 C516 C518 C519 C521 C522 C523 C534 C536 C537 C538 C539 C541 C542 C543 C544 C545 C546 C548 C549 C550 C552 C553 C556 C565 C566 C567 C601 C602 C603 C604 J1 J2 J3 EP1 EP3
4030017460 S.CER S.CER S.CER S.CER S.CER S.CER S.CER S.CER S.CER S.CER S.CER S.CER S.CER S.CER S.CER S.CER S.CER S.CER S.CER S.CER S.CER S.CER S.CER S.CER S.CER S.CER S.CER S.CER S.CER S.CER S.TAN S.TAN S.TAN S.CER S.CER S.CER S.CER S.CER S.CER S.CER S.CER S.CER S.CER S.CER S.CER S.CER S.CER S.CER S.CER S.CER S.CER S.CER S.CER S.CER S.CER S.CER S.CER S.CER S.CER S.CER S.CER S.MLR S.CER S.CER S.CER S.CER S.CER S.CER S.CER S.CER S.CER S.CER S.CER S.CER S.CER S.CER S.CER S.CER S.CER S.CER S.CER S.CER S.CER S.CER S.CER S.CER S.CER S.CER S.CER
ECJ0EC1H010B ECJ0EC1H080C ECJ0EB1E102K ECJ0EB1E102K ECJ0EC1H470J ECJ0EC1H040B ECJ0EC1H0R5B ECJ0EC1H220J ECJ0EC1H010B ECJ0EC1H010B ECJ0EB1E102K ECJ0EB1E102K ECJ0EC1H030B ECJ0EC1H040B ECJ0EC1H470J ECJ0EC1H030B ECJ0EC1H030B C1608 CH 1H 180J-T C1608 CH 1H 220J-T ECJ0EB1E102K ECJ0EB1E102K C1608 CH 1H 120J-T ECJ0EB1E102K ECJ0EB1E102K ECJ0EB1E102K C1608 CH 1H 0R5C-T ECJ0EB1E102K C1608 CH 1H 680J-T C1608 CH 1H 100D-T C1608 JB 1E 104K-T TEESVA 0J 685M8R TEESVA 1V 224M8R TEESVA 1V 104M8R ECJ0EB1E102K ECJ0EB1E102K ECJ0EB1E102K ECJ0EB1C103K ECJ0EB1E102K ECJ0EB1A104K ECJ0EC1H470J ECJ0EB1E471K ECJ0EB1E102K ECJ0EC1H560J ECJ0EC1H040B ECJ0EB1E102K ECJ0EB1C103K ECJ0EC1H050B ECJ0EC1H030B ECJ0EB0J105K ECJ0EC1H020B ECJ0EC1H010B ECJ0EC1H010B ECJ0EC1H101J ECJ0EB1E102K ECJ0EC1H020B ECJ0EB1E102K C1608 CH 1H 820J-T ECJ0EB1E102K ECJ0EB1E102K C1608 CH 1H 150J-T ECJ0EB1E102K ECPU1C104MA5 ECJ0EB1E102K ECJ0EB0J105K ECJ0EB0J105K ECJ0EC1H270J C1608 CH 1H 010B-T C1608 CH 1H 010B-T ECJ0EB1E102K ECJ0EB1E102K ECJ0EC1H470J ECJ0EB1E102K ECJ0EC1H470J ECJ0EC1H470J ECJ0EC1H470J ECJ0EC1H470J ECJ0EC1H470J ECJ0EC1H470J ECJ0EC1H470J ECJ0EC1H470J ECJ0EC1H470J ECJ0EC1H470J ECJ0EC1H470J ECJ0EC1H470J ECJ0EC1H470J ECJ0EB1E102K ECJ0EB1E102K ECJ0EB1E102K ECJ0EB1E102K

T B T B B B B B B B B B B B B T T B B B T B B B B B B B T T T T T T T B B B B T T B T T T T T B B B B B B B B B T T T B T B B B B B B B B B B B T T T T T T T T T T T T T B B B B 24.4/14.1 27.8/16.1 23.1/12.3 26.4/11.1 27.3/9.2 24.9/10.1 24.9/9.2 27.3/8.3 27.1/4.4 22.6/5.8 24.6/4.6 25.5/6.4 23.7/12.9 21.4/15.3 21.1/16.5 19.8/16.5 18.6/17 22.9/7.8 20.3/7.6 20/4.6 30.6/8.7 17.2/9.6 19.2/12 23.3/8.9 18.6/7.4 15.9/9.6 16.5/4.4 27.8/41.7 26.3/46.5 35.6/11.8 1.3/14.6 1.3/7.7 3.4/14.6 2.8/18.1 11.2/12.2 27.2/23.5 15.1/22.9 10.4/19.9 9.4/9.6 13.9/19.3 14.3/20.5 7/11 10.3/21.6 8.8/22.2 15/22 12.7/20.5 10.4/16.3 32/30.4 27.9/31 33.8/28.2 33.8/25 33.8/23.4 35/22.4 40/21.3 36.6/21 12.4/8.7 27.5/46.5 29.3/17.2 29/38.2 39.2/36 19.7/12.8 16.1/15.2 8.2/10 31.6/12.2 31.6/11.3 30.9/18.1 32.3/48.6 29.7/40.5 32.4/23.4 31/23.7 3.1/30.2 24.8/15.6 36.4/9.4 37.4/9.4 39.6/8.6 23.2/1.6 22.3/2 21.4/2 20.5/2 19.6/2 18.7/2 17.8/2 13.8/2 12.9/2 12/2 32/28.1 29.3/27.8 27/25.2 33.8/35.2
6450000870 CNR HEC2711-01-S.CNR 54104-3696 (3692) 6510025910 CNR BNC-RS.BEA 6910014640 S.BEA MPZ1608S221A-T MPZ2012S221A-T

17.6/6.3

34.9/6.8 37/5.8
SECTION 7 MECHANICAL PARTS AND DISASSEMBLY

[CHASSIS PARTS]

MP1 MP2

DESCRIPTION QTY.

J1 J2 J3 MP1* MP2 MP5* MP6 MP7 MP8 MP9
6450000870 HEC2711-01-54104-BNC-R8510017480 8930072250
MP3 MP4 MP5 MP6 MP7 MP8 MP9 MP10 MP11 MP12 MP13 MP14 MP15 MP16 MP17 MP18 MP19 MP20 MP21 MP22 MP23 MP24 MP25 MP26 MP27 MP28 MP29 MP30
CHASSIS T-FRONT PANEL (incl. MP4, 5, 6, 7, 12, 14, 24) Except [THA] T-FRONT PANEL (A) (incl. MP4, 5, 6, 7, 12, 14, 24) [THA] REAR PANEL WINDOW PLATE WINDOW SHEET PTT PANEL PTT BUTTON JACK CAP DC CAP T-KEY MAIN SEAL PTT RUBBER JACK PLATE SP NET HEX NUT 8830001250 ANT CONNECTOR-101 nut 8610012170 KNOB N-2251 OPT SHEET RELEASE BUTTON RELEASE PLATE MIC SPONGE 8930056540 Push spring (AH) 8930055870 O-ring (AO) SHEET (A)-knob spring NO.7800P tap 1 at washer B0 2X4 NI-ZC3 (BT) 8810010191 Screw BiH M2X4 SUS SSBC 8810009511 Screw BT B0 2X4 NI-ZC3 (BT) 8810009221 Screw BT B0 2X8 NI-ZK3 (BT) 8810009561 Screw BT B0 2X6 NI-ZK3 (BT)

2964 VCO CASE 2403 CONTACT SPRING -PA HEATSINK 2721 VCO COVER Shield sponge (BU) 2964 RF SHIELD 2964 ANT SPRING
*: Refer to SECTION 9 BOARD LAYOUTS.

[ACCESSORIES]

EP1 EP2 EP3 EP5 MP1 MP2
OptionalProduct OptionalProduct OptionalProduct OptionalProduct OptionalProduct
BP-226 EXP [USA], [EUR], [TPE], [THA], [EXP] BP-227 [USA-2], [EUR-1], [UK], [KOR], [TPE-2], [EXP-2] BC-167D [UK],[EXP-2] BC-167A [USA-2], [TPE-2] FA-B2E 6910018620 BLACK HANDY STRAP

OptionalProduct MB-98

OPTION SHEET
DS4 MC1 S3 S801 S802 SP1 W5 W6 EP1 MP1 MP2 MP3
5030002970 SEM6027P-46C33-G

MP1 EP1 EP5

2260002840 SKHLLFATP70N00E2015F-SKHLLFACS028014-OPC-1190A 8900016400 OPC-SRCN-2964-SP-N-W REFLECTOR LCD HOLDER LOGIC SHIELD

Screw abbreviations

A, B0, BT: Self-tapping PH: Pan head ZK: Black NI-ZU: Nickel-Zinc SUS: Stainless 7-1
MP8(C) SP1(L) MP17(C) MP3(C) MP16(C) A
J3(R) MP2(C) MP10(C) MP2(R) MP15(C)

MP23(C)

MP19(C) MP20(C) MP11(C) MP28(C) MP9(R) MP8(R) MP5(C) MP4(C) MP9(C) MP29(C)

MP22(C)

MP26(C) MC1(L) MP28(C)

MP28(C) MP18(C)

MP28(C) W5(L) MP3(L) MP1(C) A DS4(L) EP2(L) MP2(L) MP26(C)

MP28(C) MP29(C) MP28(C)

MP1(C)

MP13(C) W6(L)

MP26(C) MP26(C)
SECTION 8 SEMICONDUCTOR INFORMATION

TRANSISTERS AND FETs

2SA1576A (Marking: FQ)

B C E E

DIODES

2SB1132 (Marking: BA)

2SA1588 (Marking: ZY)
2SB1201S (Marking: TP-FA)

2SC4116 (Marking: LY)

1SV271 (Marking: TG)

1SV286 (Marking: T7)

SB07-03C-TB-E (Marking: J)

DA221 (Marking: K)

HVC350BTRF (Marking: B2)

2SC4211 (Marking: LY)

2SC4617 (Marking: BR)

2SC5006 (Marking: 24)

2SC5085 (Marking: MCY)

2SC5231 (Marking: CY)

HVC375BTRF (Marking: B8)

HVC376BTR (Marking: B9)

HVU131TRF (Marking: P1)

1SS400 (Marking: A)

MA133 (Marking: MP)

2SK1069 (Marking: FJ)

3SK318YB (Marking: YB)

C76 D2 D1 C52 L15 C537

C204 C288

C82 R57

R59 C88 C87 R252

R259 C89 C92

R75 C105

L19 D12

C95 R66 C96

C612 R519

L42 C542 R20 R431
C522 C523 R48 R50 C70 C31 C38 R49

D59 L44

C54 C486 R402 R438

C442 R423

C444 C445 R425

R437 C462

C443 C446

R435 C448

R427 L41 C447

R433 C458

C148 X2

R330 C282

C554 R130 C147

C152 R128

C163 R144

C540 C385

R6 R4 R2 R1 R7 R8 R537

B6705B

C546 C547

R194 C541

R195 R525

R196 R227

R491 R224 C219 C249 R324 R321 R323 R320 C232 R181

C195 R101

R103 R547 R19

R546 R22

L 58 R601 R160

C M P5

D8 D10
D46 D69 D47 D68 D48 D67 D49 D66 D41

R170 R113 C555 R98

R168 C212 R107 R115

To J2 (MAIN UNIT)

C120 C117 C119

R 5 16

R456 R455

D42 D43

R112 R9

L38 R418

Q11 IC19

C301 R30 R337

R543 R329 C375

C429 C489

C 46 0

C463 R4 36

C 4 13

R440 C465

R505 R514
S-14315XH-P2 Printed in Japan 2007 Icom Inc.

SECTION 10

HOUT IC25:EW-460 D73:MA2S111 Q82:DTC144EU AMP

BLOCK DIAGRAM

SW5V IC24:S-812C36AMC REG D64:1SS400 D71:1SS400 UNLK UNLOCK DET Q34:2SK1069 DC-AMP X4:CR-783 (15.3MHz) REF OSC DCIN RMOD FC LVIN VCO5 VCO5 Rx:182.350-220.350MHz Tx;136.000-174.000MHz D3:1SV271 D4:MA2S077 Q83:2SC4617 BUFF VCO D59:MA2S304 D60:MA2S304 D61:1SV286 Q76:2SC5231 Q75:2SC5231 BUFF Q74:2SC5231 TX/RX SW Q3: 2SC5085 PRE DRIVE Q2: RD01MUS1 DRIVE AMP Q1: RD12MVS1 PWR AMP LPF D32:MA742 D33:MA742 PWR DET D1:HVU131 D2:MA77 D8:MA77 ANT SW T5 VCC VCC ANTENNA

Tx/Rx:136.000-174.000MHz

IC19:MB15E03SL PLL IC LOOP FIL

MODOUT

J1:HEC2711-01-020

D5;1SS400 EXT-V DETECT

HV D14:MA133 D15:MA2S111 D16:SB07-03C Q10:2SC4617 Q18:2SC1588 Q19:2SC1201 Q9:UNR9213 D6:RB060L D7:MA2S728 Q4:HAT1026

CHGC CHGIH

VCO SHIFT D58:MA2S077 Q77:UNR921NJ

CHARG BATT

LPF BUFF BPF AMP LOOP SW Q5:2SC5006 1st LO R5V R5V
IC26(1/2):LMV358IPW Q37:UNR9113J PS5V APC CTRL

VCCBT GNDBT DC SW

Q81:2SC4116

IC20:SN74AHC1G66HDBV

TXC R5V

BATT-V DETECT D13;1SS400

SW5VPLLSW
2nd LO 45.90MHz IC2:TA31136FN IC10(5/8): M62363FP IF AMP SQLIN D/A IF DET-IC (2nd-MIX,IF-AMP, NOISE-AMP,FMDET, RSSI,SQLSW ) Q14:2SC5006