Icom PMR446 User manual

SERVICE
MANUAL
6-9-16, Kamihigashi, Hirano-ku, Osaka, 547-0002, Japan S-136007II-CD
© 1999 Icom Inc.
PMR446 FM TRANSCEIVER
COVER 99.12.18 8:39 AM Page 1

INTRODUCTION
DANGER
ORDERING PARTS
REPAIR NOTES
6-9-16, Kamihigashi, Hirano-ku, Osaka 547-0002, Japan
Phone : [phone]
Fax : [phone]
Communication Equipment
Himmelgeister Str. 100, D-40225 Düsseldorf, Germany
Phone: [phone] Fax : [phone]
URL : http://www.icomeurope.com
Unit 9, Sea St., Herne Bay, Kent, CT6 8LD, U.K.
Phone: [phone] Fax : [phone]
URL : http://www.icomuk.co.uk
Zac de la Plaine, Rue Brindejonc des Moulinais
BP 5804, 31505 Toulouse Cedex, France
Phone: [phone] Fax : [phone]
URL : http://www.icom-france.com
Crta. de Gracia a Manresa Km.14,750
08190 Sant Cugat del Valles Barcelona, SPAIN
Phone : [phone] Fax : [phone]
URL : http://www.icomspain.com
<
Corporate Headquarters
>
2380 116th Avenue N.E., Bellevue, WA 98004, U.S.A.
Phone : [phone] Fax : [phone]
URL : http://www.icomamerica.com
<
Customer Service
>
Phone : [phone]
A.C.N.006 092 575
290-294 Albert Street, Brunswick, Victoria, 3056, Australia
Phone: [phone] Fax : [phone]
URL : http://www.icom.net.au
6F No.68, Sec.1 Cheng-Teh Road, Taipei, Taiwan, R.O.C.
Phone: [phone] Fax : [phone]
3071 #5 Road, Unit 9, Richmond, B.C., V6X 2T4, Canada
Phone : [phone] Fax : [phone]
URL : http://www.icomcanada.com
This service manual describes the latest service information
for the IC-446S PMR446 FM TRANSCEIVER at the time of
publication.
NEVER connect the transceiver to an AC outlet or to a DC
power supply that uses more than 5 V. Such a connection
could cause a fire hazard and/or electric shock.
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.
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
<SAMPLE ORDER>
1110002820 S.IC NJM2100M IC-446S MAIN UNIT 5 pieces
8810009560 Screw PH BO M2x6 ZK IC-446S Chassis 10 pieces
Addresses are provided on the inside back cover for your
convenience.
1. Make sure a problem is internal before disassembling the transceiver.
2. DO NOT open the transceiver until the transceiver is disconnected 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 insulated turning tool MUST be used for all adjustments.
5. DO NOT keep power ON for a long time when the transceiver is defective.
6. DO NOT transmit power into a signal generator or a sweep generator.
7. ALWAYS connect a 30 dB or 40 dB attenuator between the transceiver and a deviation meter or spectrum analyzer when
using such test equipment.
8. READ the instructions of test equipment thoroughly before connecting equipment to the transceiver.
To upgrade quality, all electrical or mechanical parts and
internal circuits are subject to change without notice or oblig-
ation.
VERSION SYMBOL
EUR
EUR-1
GEN
GEN-1
BODY COLOR
BLACK
YELLOW
BLACK
YELLOW
Europe
General
COVER 99.12.18 8:39 AM Page 2

TABLE OF CONTENTS
SECTION 1 SPECIFICATIONS
SECTION 2 INSIDE VIEWS
SECTION 3 DISASEMBLY INSTRUCTION
SECTION 4 CIRCUIT DESCRIPTION
4-1 RECEIVER CIRCUITS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-1
4-2 TRANSMITER CIRCUITS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-2
4-3 PLL CIRCUITS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-2
4-4 POWER SUPPLY CIRCUITS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-3
4-5 PORT ALLOCATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-3
SECTION 5 ADJUSTMENT PROCEDURES
5-1 PREPARATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-1
5-2 PLL AND TRANSMITTER ADJUSTMENTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-2
5-3 RECEIVER ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-3
SECTION 6 PARTS LIST
SECTION 7 MECHANICAL PARTS AND DISASSEMBLY
SECTION 8 SEMI-CONDUCTOR INFORMATION
SECTION 9 BOARD LAYOUTS
9-1 MAIN UNIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9-1
9-2 RF UNIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9-3
SECTION 10 BLOCK DIAGRAM
SECTION 11 VOLTAGE DIAGRAM
11-1 MAIN UNIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11-1
11-2 RF UNIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11-2

All stated specifications are subject to change without notice or obligation.
‘‘GENERAL
Number of channels : 8 ch
Type of emission : 8K50F3E
Frequency stability : ±2.5 kHz
Frequency resolution : 12.5 kHz
Power supply requirements : 3 ×AA(R6) dry, alkaline;
(negative ground) or optional BP-202
Current drain : Less than 500 mA
Operating temperature range : –20˚C to +55˚C
Number of CTCSS frequency: 38 (67.0–250.3 Hz)
Dimensions (mm) : 55.5(W)×102.5(H)×26.5(D)
(proj. not included)
Weight (included 3 cells) : 180 g
‘‘TRNSMITTER
Output power : 500 mW
Modulation system : Variable reactance
frequency modulation
Max. freqequency deviation : ±2.5 kHz
Spurious emissions : Less than 0.25 µW
Adjacent channel power : More than 60 dB
External mic.connector : 3-conductor
2.5(d) mm/2.2 kΩ
‘‘RECEIVER
Receiving system : Double conversion
superheterodyne
Intermediate frequency : 1st 21.7 MHz
2nd 450 kHz
Sensitivity (12 dB SINAD) :
Less than 0.25 µV; –12 dBµV
Adjcent chnnel selectivity : 55 dB
Spurious response : 65 dB
Intermoduration : 60 dB
Audio output power : 100 mW at 10% distortion
(at 4.5 V DC) with an 8 Ωload
External SP connector : 2-conductor
3.5 (d) mm (1⁄8")/8 Ω
‘‘CHANNEL FREQUENCY LIST
‘‘CTCSS FREQUENCY LIST
SECTION 1 SPECIFICATIONS
1 - 1
Channel Frequency Channel Frequency
No. (MHz) No. (MHz)
1
2
3
4
446.00625
446.01875
446.03125
446.04375
5
6
7
8
446.05625
446.06875
446.08125
446.09375
Channel Frequency Channel Frequency
No. (Hz) No. (Hz)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
67.0
71.9
74.4
77.0
79.7
82.5
85.4
88.5
91.5
94.8
97.4
100.0
103.5
107.2
110.9
114.8
118.8
123.0
127.3
131.8
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
---
136.5
141.3
146.2
151.4
156.7
162.2
167.9
173.8
179.9
186.2
192.8
203.5
210.7
218.1
225.7
233.6
241.8
250.3
OFF

SECTION 2 INSIDE VIEWS
•MAIN UNIT
2 - 1
•RF UNIT
T+3 Current amplifier
Q27: 2SC4081
Q28: 2SB798
Q101: UMZ1N
D5: 1SS355
R+3 Current amplifier
(Q18: 2SA1586)
AF amplifier
(IC9: NJM2070M)
EEPROM
(IC3: AT24C02N)
CPU
(IC1: µPD753036GK)
+3 Regurator
(IC6: S-81230SG)
TOP VIEW BOTTOM VIEW
1st mixer
(Q2: 3SK284)
Reference oscilletor
(X1: CR-669 21.25MHz)
PLL IC
(IC1: µPD3140GS)
TOP VIEW BOTTOM VIEW
VCO circuit
FM IF IC
(IC2:TA31136FN)
1st IF filter
(FI2: FL-297)
1st IF amplifier
(Q1: 2SC4215)
2nd IF filter
(FI3: CFWN450G)
RF amplifier
(Q3: 2SC4226)

SECTION 3 DISASEMBLY INSTRUCTION
3 - 1
A
BB
MAIN unit
RF unit
CD
E
G
F
•REMOVING THE REAR PANEL
1Unscrew 1 screw A, and 4 screws B.
2Remove the rear panel in the direction of the arrow.
•REMOVING THE RF UNIT
1Remove 1 knob C, and unscrew 1 nut D.
2Then remove the RF unit.
•REMOVING THE MAIN UNIT
1Unscrew 2 screws, E.
2Remove the PTT rubber, F.
3Unsolder 2 points, G, and remove the MAIN unit.

4 - 1
SECTION 4 CIRCUIT DESCRIPTION
4-1 RECEIVER CIRCUITS
4-1-1 ANTENNA SWITCHING CIRCUIT (RF UNIT)
Received signals from the antenna connector are passed
through the low-pass filter (L5, L6, C8–C12). The filtered sig-
nals are applied to the λ⁄4type antenna switching circuit
(D101, D102, L4, L206, C209, C210). The passed signals
are then applied to the RF amplifier circuit.
The antenna switching circuit functions as a low-pass filter
while receiving. However, its impedance becomes very high
while D101 and D102 are turned ON (while transmitting).
Thus transmit signals are blocked from entering the receiv-
er circuits. The passed signals are then applied to the RF
amplifier circuit.
4-1-2 RF CIRCUIT (RF UNIT)
The RF circuit amplifies signals within the range of frequen-
cy coverage and filters out-of-band signals.
The signals from the antenna switching circuit are amplified
at the RF amplifier (Q3) and passed through the bandpass
filter (FI1) to suppress out-of-band signals. The filtered sig-
nals are applied to the 1st mixer circuit.
4-1-3 1ST MIXER AND 1ST IF CIRCUITS (RF UNIT)
The 1st mixer circuit converts the received signals to a fixed
frequency of the 1st IF signal with a PLL output frequency.
By changing the PLL frequency, only desired signals will
pass through a crystal filter at the next stage of the 1st mixer.
The signals from the bandpass filter (FI1) are mixed at the
1st mixer circuit (Q2) with a 1st LO signal coming from the
VCO circuit to produce a 21.7 MHz 1st IF signal.
The 1st IF signal is applied to a crystal filter (FI2) to sup-
press out-of-band signals. The filtered 1st IF signal is
applied to the IF amplifier (Q1), then applied to the 2nd
mixer circuit.
4-1-4 2ND MIXER AND DEMODULATOR CIRCUITS
(RF UNIT)
The 2nd mixer circuit converts the 1st IF signal into a 2nd IF
signal. A double conversion superheterodyne system (which
converts receive signals twice) improves the image rejection
ratio and obtains stable receiver gain.
The 1st IF signal from the IF amplifier (Q1) is applied to the
2nd mixer section in the FM IF IC (IC2, pin 16), and is mixed
with the 2nd LO signal to be converted into a 450 kHz 2nd
IF signal.
The FM IF IC contains a 2nd mixer, quadrature detector,
noise amplifier and a limiter amplifier, etc. The PLL refer-
ence oscillator (X1) is used for the 2nd LO signal via the PLL
IC (IC1, pins 16, 17), and is applied to pin 1 of the FM IF IC
(IC2).
The mixed 2nd IF signal is output from pin 3 (IC2) and
passed through the ceramic bandpass filter (FI3) to remove
unwanted heterodyne frequencies. It is then amplified at the
limiter amplifier section (IC2, pin 5) and applied to the quad-
rature detector section (IC2, pins 10, 11) to demodulate the
2nd IF signal into AF signals.
4-1-5 AF CIRCUIT (RF AND MAIN UNITS)
AF signals from the FM IF IC (RF unit; IC2, pin 9) are
passed through the high-pass filter (RF unit; Q15, Q16) to
remove CTCSS signals then applied to the MAIN unit via J2
(pin 10) as the “VOL” signal.
The “VOL” signal (AF signals) from the RF unit is applied to
the [VOL] control (MAIN unit; R58) to control the audio level
via the volume mute switch (Q23). The level controlled AF
signals are applied to the AF power amplifier (IC9, pin 2) to
drive an internal speaker (SP1) via the [SP] jack (J1).
• 2nd IF and demodulator circuits
Mixer
16
Limiter
amp.
2nd IF filter
450 kHz PLL IC
IC1
X1
21.25 MHz
X2
(21.25 MHz)
RSSI
IC2 TA31136FN
14 1st IF (21.7 MHz)
from Q1
"SQL" signal to the CPU pin 59
11109
87 5 3
AF signal "AF"
R+3
1
17 16
Active
filter
FI3
Noise
detector
FM
detector

4 - 2
4-1-6 SQUELCH CIRCUIT (RF AND MAIN UNITS)
• NOISE SQUELCH
The noise squelch circuit cuts out AF signals when no RF
signals are received. By detecting noise components in the
AF signals, the squelch circuit switches the AF mute switch.
A portion of the AF signals from the FM IF IC (RF unit; IC2,
pin 9) are applied to the active filter section (RF unit; IC2,
pin 8). The active filter section amplifies and filters noise
components. The filtered signals are applied to the noise
detector section and output from pin 14 as the “SQL” signal.
The “SQL” signal from IC2 (pin14) is applied to the CPU
(MAIN unit; IC1, pin 59). The CPU analyzes the noise con-
dition and outputs the “RMUT” and “AFON” signals to toggle
the volume mute (MAIN unit; Q23) and AF mute (MAIN unit;
Q5, Q10, Q11) switches.
• TONE SQUELCH
The tone squelch circuit detects AF signals and opens the
squelch only when receiving signal containing a matching
subaudible tone (CTCSS). When 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 noise squelch is open.
A portion of the AF signals from the FM IF IC (RF unit; IC2,
pin 9) passes through the tone low-pass filter (MAIN unit;
Q7, Q12) to remove AF (voice) signals and is applied to the
CTCSS decoder inside the CPU (MAIN unit; IC1, pin 58) via
the “CTCIN” line to control the volume mute and AF mute
switches.
4-2 TRANSMITTER CIRCUITS
4-2-1 MICROPHONE AMPLIFIER CIRCUIT
(MAIN UNIT)
The microphone amplifier circuit amplifies audio signals with
pre-emphasis characteristics from the microphone to a level
needed for the modulation circuit.
AF signals from the internal/external microphone are applied
to the microphone amplifier circuit (IC2b) via the microphone
mute switch (Q6) and pre-emphasis circuit (R7, C24). The
amplified signals are passed through the splatter filter (IC2a)
and applied to the modulation circuit in the RF unit via J4
(pin 6) as the MOD signal.
4-2-2 MODULATION CIRCUIT (RF UNIT)
The modulation circuit modulates the VCO oscillating signal
(RF signal) using the microphone AF signals.
The filtered audio signals from the MAIN unit are passed
through the deviation adjustment pot (R50), and are then
applied to the modulation circuit (D4, D5) to modulate trans-
mit signals at the VCO circuit (Q6).
The modulated signal is applied to the drive amplifier circuit.
4-2-3 DRIVE/POWER AMPLIFIER CIRCUITS
(RF UNIT)
The amplifier circuit amplifies the VCO oscillating signal to
the output power level.
The signal from the buffer amplifiers (Q7, Q203) is passed
through the Tx/Rx switching circuit (D2), and are amplified at
the pre-drive (Q8) and drive (Q201) amplifiers. The amplified
signal is power-amplified at the power amplifier (Q202) to
obtain 500 mW of RF power
The amplified transmit signal is passed through the antenna
switching circuit (D7) and low-pass filter, and is then applied
to the antenna.
4-3 PLL CIRCUITS (RF UNIT)
A PLL circuit provides stable oscillation of the transmit fre-
quency and receive 1st LO frequency. The PLL output com-
pares the phase of the divided VCO frequency to the refer-
ence frequency. The PLL output frequency is controlled by
the divided ratio (N-data) of a programmable divider.
The PLL circuit consists of the VCO circuit (Q6). An oscillat-
ed signal from the VCO passes through the buffer amplifier
(Q7), and is then applied to the PLL IC (IC1, pin19) and
prescaled in the PLL IC based on the divided ratio (N-data).
The reference signal is generated at the reference oscillator
(X1) and is applied to the PLL IC. The PLL IC detects the
out-of-step phase using the reference frequency and out-
puts it from pin 13 (IC1). The output signal is passed through
the loop filter (R45, C68) and is then applied to the VCO cir-
cuit as the lock voltage.
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 oscillated frequency.
• PLL circuit
Shift register
Prescaler
Phase
detector
Loop
filter
Programmable
counter
Programmable
divider
X1
21.25 MHz
to the FM IF IC
VCO Buffer
Q7
3
4
5STB
IC1 (PLL IC)
CK
DATA
to transmitter circuit
to 1st mixer circuit
D2
D1
17
16
14 19
Q6, D4, D5
Buffer
Q203

4 - 3
4-4 POWER SUPPLY CIRCUITS
VOLTAGE LINE
4-5 PORT ALLOCATIONS
4-5-1 CPU (MAIN unit; IC1)
LINE
BATT
3V
+3V
R+3
T+3
DESCRIPTION
The voltage from the connected battery cells.
Common 3 V converted from the BATT line at
the 3V regulator circuit (IC6). The circuit outputs
the voltage regardless of the power ON/OFF
condition.
Common 3 V converted from the BATT line at
the +3V regulator circuit (Q25, D4).
Receive 3 V cotrolled by the R+3 regulator circuit
(Q18) using the “RXV” signal from CPU (IC1).
Transmit 3 V converted from the BATT line at the
T+3 regulator circuit (Q27, Q28, Q101, D5) using
the “TXV” signal coming from CPU (IC1).
Outputs data signals to the PLL IC (RF
unit; IC1).
Outputs strobe signals for the PLL IC
(RF unit; IC1).
Outputs control signal for the +3V reg-
ulator circuit (MAIN unit; Q25, D4).
Output port for the CTCSS signals.
Outputs control signal for the micro-
phone amplifier (IC2).
Low : While microphone amplifier is
ON.
Input port for the CTCSS decode sig-
nals.
Input port for squelch level signal.
Input ports for the control signal from
the external remote microphone.
Input port from the connected battery
pack for low battery indication.
Input port for the RSSI signal from the
FM IF IC (RF unit; IC2) to detect receiv-
ing signal strength level.
Outputs clock signal to the EEPROM
(IC3).
Outputs data signals to the EEPROM
(IC3).
Output port for power save function,
applied to VCO regurator circuit (RF
unit; Q13, Q14, D8, D9).
Outputs the R+3 regulator control sig-
nal (Q25, D4).
Outputs the T+3 regulator control sig-
nal (Q27, Q28, Q101, D5).
Outputs control signal for LCD back-
light.
Low : While LCD backlight is ON.
Outputs internal microphone control
signal.
High : While internal PTT switch is
pushed.
Outputs MIC mute signal for RING
function.
High : While RING signals are out-
put, etc.
51
52
53
54–56
57
58
59
60
61
62
73
74
75
76
77
78
79
80
PLLDA
PLLST
POWER
CTCO0–
CTCO2
TXMOD
CTCIN
SQLIN
REMIN
BATIN
SENIN
EEPCK
EEPDA
PSC
RXV
TXV
LAMPC
MICSW
MMUTE
Pin Port Description
number name
Outputs VCO oscillation frequency
control signal for Tx/Rx.
Low : While transmitting
Input port for the PTT switch from the
external mic jack (MAIN unit; J1).
Low : External PTT switch is ON.
Input port for the internal PTT switch.
Low : While PTT switch is pushed.
Input port for the [DOWN] switch.
Input port for the [UP] switch.
Input port for the [MODE] switch.
Input port for the POWER switch.
Low : While POWER switch is
pushed.
Outputs beep audio signal.
Outputs volume mute switch (Q23)
control signal.
High : While squelched
Outputs control signal for theAF ampli-
fier regulator circuit (Q5, Q10, Q11).
High: When squelch is open.
Outputs clock signal to the PLL IC (RF
unit; IC1).
4
31
34
35
36
37
38
46
48
49
50
SHIFT
PTT2
PTT1
DOWN
UP
MODE
POWSW
BEEP
RMUTE
AFON
PLLCK
Pin Port Description
number name

5 - 2
SECTION 5 ADJUSTMENT PROCEDURES
5-1 PREPARATION
■REQUIRED TEST EQUIPMENT
EQUIPMENT
DC power supply
Frequency counter
FM deviation meter
DC voltmeter
RF power meter
(terminated type)
GRADE AND RANGE
Output voltage : 4.5 V DC
Current capacity : 1 A or more
Frequency range : 0.1–600 MHz
Frequency accuracy: ±1 ppm or better
Sensitivity : 100 mV or better
Frequency range : 30–600 MHz
Measuring range : 0 to ±10 kHz
Input impedance : 50 kΩ/V DC or better
Measuring range : 100 mW–1 W
Frequency range : 300–600 MHz
Impedance : 50 Ω
SWR : Less than 1.2 : 1
EQUIPMENT
Audio generator
Standard signal
generator (SSG)
Oscilloscope
AC millivoltmeter
External speaker
Attenuator
GRADE AND RANGE
Frequency range : 300–3000 Hz
Measuring range : 1–500 mV
Frequency range : 0.1–600 MHz
Output level : 0.1 µV–32 mV
(–127 to –17 dBm)
Frequency range : DC–20 MHz
Measuring range : 0.01–10 V
Measuring range : 10 mV–10 V
Input impedance : 8 Ω
Capacity : 300 mW or more
Power attenuation : 30 or 40 dB
Capacity : 1 W or more
■ENTERING THE ADJUSTMENT MODE
qTurn the transceiver power OFF.
wWhile connecting the “TEST” and GND on the MAIN unit, then turn power ON.
(See location at page 5-3)
■CONNECTIONS
to the RF test port J1
Standard signal
generator
–17 to –127 dBm
(32 mV to 0.1 µV)
CAUTION:
DO NOT transmit while SSG is
connected to the antenna connector.
Frequency
counter
FM deviation
meter Attenuator 30 dB or 40 dB
RF power meter
50 Ω/100 mW–1 W
DC power supply
4.5 V/1.0 A –
+

5 - 3
REFERENCE
FREQUENCY
OUTPUT
POWER
FM
DEVIATION
5-2 PLL AND TRANSMITTER ADJUSTMENTS ADJUSTMENT
ADJUSTMENT ADJUSTMENT CONDITION MEASUREMENT VALUE POINT
UNIT LOCATION UNIT ADJUST
466.00625 MHz
470 mW
±2.45 kHz
10 mV ±3dB
1
1
1
2
• Operating channel : Ch 01
• Transmitting
• Operating channel : Ch 01
• Transmitting
• Operating channel : Ch 01
• Set group No. : 01
• Connect an audio generator to the
[MIC] jack and set as:
1 kHz/100 mV rms
• Set an FM deviation meter as:
HPF : OFF
LPF : 20 kHz or 15 kHz
De-emphasis : OFF
Detector : (P–P)/2
• Transmitting
• Set group No. : OFF (– –)
• Set an audio generator output level
until the deviation is ±1.75 kHz.
• Transmitting
Top
panel
RF
RF
Loosely couple a fre-
quency counter to the
antenna.
Connect an RF power
meter to the RF test
port J1.
Connect an FM devia-
tion meter to the RF
test port J1.
RF
RF
RF
C63
R206
R50
Verify
RF
GND J1
RF test port
R50
FM deviation adjustment
Reference frequency
adjustment
R206
Output power
adjustment
TEST
C63

5 - 4
SQUELCH
5-3 RECEIVER ADJUSTMENT
ADJUSTMENT ADJUSTMENT CONDITION MEASUREMENT VALUE ADJUSTMENT
UNIT LOCATION
Audio signal
disappears.
1
2
• Operating channel : Ch 04
• Connect an SSG to J1 on the RF unit
and set as:
Frequency : 446.04375 MHz
Level : 0.14 µV*
(–124 dBm)
Modulation : OFF
• Receiving
• Set an SSG as :
Level : OFF
• Receiving
Front
panel
Internal speaker
Push and hold
[MODE] and
[DOWN] keys for
1 sec.
Verify

[MAIN UNIT][MAIN UNIT]
IC1 1140008770 S.IC µPD753036GK-559-BE9
IC2 1110002820 S.IC NJM2100M-T1
IC3 1140008350 S.IC AT24C02N-10SI-2.7
IC5 1110004710 S.IC S-80928ANMP-DDR-T2
IC6 1180001150 S.IC S-81230SG-QB-T1
IC9 1110002810 S.IC NJM2070M-T1
Q1 1590000720 S.TRANSISTOR DTA144EUA T106
Q2 1590001440 S.TRANSISTOR UN9214 (TX)
Q3 1590002920 S.TRANSISTOR DTA123JUA T106
Q5 1510000580 S.TRANSISTOR 2SA1362-GR (TE85R)
Q6 1560000840 S.FET 2SK1829 (TE85R)
Q7 1530002280 S.TRANSISTOR 2SC4081 T107 S
Q10 1530002280 S.TRANSISTOR 2SC4081 T107 S
Q11 1530003090 S.TRANSISTOR 2SC4213-B (TE85R)
Q12 1530002280 S.TRANSISTOR 2SC4081 T107 S
Q14 1590001330 S.TRANSISTOR DTA114EUA T106
Q18 1510000770 S.TRANSISTOR 2SA1586-GR (TE85R)
Q23 1590001390 S.FET 2SJ144-Y (TE85R)
Q25 1590002490 S.TRANSISTOR UMZ2N TR
Q27 1530002280 S.TRANSISTOR 2SC4081 T107 S
Q28 1520000200 S.TRANSISTOR 2SB798-T2 DK
Q29 1590000680 S.TRANSISTOR DTC114EUA T106
Q101 1590002630 S.TRANSISTOR UMZ1N TR
D2 1750000550 S.DIODE 1SS355 TE-17
D4 1750000550 S.DIODE 1SS355 TE-17
D5 1750000550 S.DIODE 1SS355 TE-17
X1 6050010450 S.XTAL CR-627 (5.8368 MHz)
R2 7030003670 S.RESISTOR ERJ3GEYJ 823 V (82 kΩ)
R4 7030003670 S.RESISTOR ERJ3GEYJ 823 V (82 kΩ)
R5 7030003810 S.RESISTOR ERJ3GEYJ 125 V (1.2 MΩ)
R6 7030003710 S.RESISTOR ERJ3GEYJ 184 V (180 kΩ)
R7 7030003450 S.RESISTOR ERJ3GEYJ 122 V (1.2 kΩ)
R9 7030003680 S.RESISTOR ERJ3GEYJ 104 V (100 kΩ)
R10 7030003310 S.RESISTOR ERJ3GEYJ 820 V (82 Ω)
R12 7030003200 S.RESISTOR ERJ3GEYJ 100 V (10 Ω)
R13 7030003520 S.RESISTOR ERJ3GEYJ 472 V (4.7 kΩ)
R14 7030003500 S.RESISTOR ERJ3GEYJ 332 V (3.3 kΩ)
R22 7030003620 S.RESISTOR ERJ3GEYJ 333 V (33 kΩ)
R23 7030003580 S.RESISTOR ERJ3GEYJ 153 V (15 kΩ)
R24 7030003820 S.RESISTOR ERJ3GEYJ 155 V (1.5 MΩ)
R25 7030003570 S.RESISTOR ERJ3GEYJ 123 V (12 kΩ)
R26 7030003560 S.RESISTOR ERJ3GEYJ 103 V (10 kΩ)
R27 7030003320 S.RESISTOR ERJ3GEYJ 101 V (100 Ω)
R30 7030003580 S.RESISTOR ERJ3GEYJ 153 V (15 kΩ)
R31 7030003800 S.RESISTOR ERJ3GEYJ 105 V (1 MΩ)
R32 7030003780 S.RESISTOR ERJ3GEYJ 684 V (680 kΩ)
R33 7030003540 S.RESISTOR ERJ3GEYJ 682 V (6.8 kΩ)
R34 7030003540 S.RESISTOR ERJ3GEYJ 682 V (6.8 kΩ)
R35 7030003530 S.RESISTOR ERJ3GEYJ 562 V (5.6 kΩ)
R36 7030003560 S.RESISTOR ERJ3GEYJ 103 V (10 kΩ)
R37 7030003600 S.RESISTOR ERJ3GEYJ 223 V (22 kΩ)
R38 7030003600 S.RESISTOR ERJ3GEYJ 223 V (22 kΩ)
R39 7030003670 S.RESISTOR ERJ3GEYJ 823 V (82 kΩ)
R40 7030003680 S.RESISTOR ERJ3GEYJ 104 V (100 kΩ)
R41 7030003530 S.RESISTOR ERJ3GEYJ 562 V (5.6 kΩ)
R42 7030003500 S.RESISTOR ERJ3GEYJ 332 V (3.3 kΩ)
R43 7030003650 S.RESISTOR ERJ3GEYJ 563 V (56 kΩ)
R45 7030003840 S.RESISTOR ERJ3GEYJ 225 V (2.2 MΩ)
R46 7030003320 S.RESISTOR ERJ3GEYJ 101 V (100 Ω)
R49 7030003320 S.RESISTOR ERJ3GEYJ 101 V (100 Ω)
R50 7030003520 S.RESISTOR ERJ3GEYJ 472 V (4.7 kΩ)
R51 7030003760 S.RESISTOR ERJ3GEYJ 474 V (470 kΩ)
R52 7030003740 S.RESISTOR ERJ3GEYJ 334 V (330 kΩ)
R53 7030003820 S.RESISTOR ERJ3GEYJ 155 V (1.5 MΩ)
R54 7030003450 S.RESISTOR ERJ3GEYJ 122 V (1.2 kΩ)
R55 7030003330 S.RESISTOR ERJ3GEYJ 121 V (120 Ω)
R56 7030004050 S.RESISTOR ERJ3GEYJ 1R0 V (1 Ω)
R57 7030003580 S.RESISTOR ERJ3GEYJ 153 V (15 kΩ)
S.=Surface mount
R58 7210001970 VARIABLE RV-244
R59 7030003680 S.RESISTOR ERJ3GEYJ 104 V (100 kΩ)
R61 7030003280 S.RESISTOR ERJ3GEYJ 470 V (47 Ω)
R62 7030003680 S.RESISTOR ERJ3GEYJ 104 V (100 kΩ)
R63 7030003530 S.RESISTOR ERJ3GEYJ 562 V (5.6 kΩ)
R64 7030003590 S.RESISTOR ERJ3GEYJ 183 V (18 kΩ)
R65 7030003590 S.RESISTOR ERJ3GEYJ 183 V (18 kΩ)
R66 7030003590 S.RESISTOR ERJ3GEYJ 183 V (18 kΩ)
R67 7030003590 S.RESISTOR ERJ3GEYJ 183 V (18 kΩ)
R68 7030003590 S.RESISTOR ERJ3GEYJ 183 V (18 kΩ)
R69 7030003590 S.RESISTOR ERJ3GEYJ 183 V (18 kΩ)
R70 7030003660 S.RESISTOR ERJ3GEYJ 683 V (68 kΩ)
R71 7030003620 S.RESISTOR ERJ3GEYJ 333 V (33 kΩ)
R72 7030003800 S.RESISTOR ERJ3GEYJ 105 V (1 MΩ)
R74 7030003560 S.RESISTOR ERJ3GEYJ 103 V (10 kΩ)
R76 7030003680 S.RESISTOR ERJ3GEYJ 104 V (100 kΩ)
R77 7030003400 S.RESISTOR ERJ3GEYJ 471 V (470 Ω)
R78 7030003560 S.RESISTOR ERJ3GEYJ 103 V (10 kΩ)
R79 7030003720 S.RESISTOR ERJ3GEYJ 224 V (220 kΩ)
R80 7030003680 S.RESISTOR ERJ3GEYJ 104 V (100 kΩ)
R81 7030003560 S.RESISTOR ERJ3GEYJ 103 V (10 kΩ)
R86 7030003680 S.RESISTOR ERJ3GEYJ 104 V (100 kΩ)
R87 7030003800 S.RESISTOR ERJ3GEYJ 105 V (1 MΩ)
R88 7030003680 S.RESISTOR ERJ3GEYJ 104 V (100 kΩ)
R89 7030003440 S.RESISTOR ERJ3GEYJ 102 V (1 kΩ)
R90 7030003440 S.RESISTOR ERJ3GEYJ 102 V (1 kΩ)
R94 7030003720 S.RESISTOR ERJ3GEYJ 224 V (220 kΩ)
R95 7030003520 S.RESISTOR ERJ3GEYJ 472 V (4.7 kΩ)
R96 7030003680 S.RESISTOR ERJ3GEYJ 104 V (100 kΩ)
R97 7030003680 S.RESISTOR ERJ3GEYJ 104 V (100 kΩ)
R98 7030003680 S.RESISTOR ERJ3GEYJ 104 V (100 kΩ)
R99 7030003680 S.RESISTOR ERJ3GEYJ 104 V (100 kΩ)
R100 7030003680 S.RESISTOR ERJ3GEYJ 104 V (100 kΩ)
R101 7030003680 S.RESISTOR ERJ3GEYJ 104 V (100 kΩ)
R102 7030003680 S.RESISTOR ERJ3GEYJ 104 V (100 kΩ)
R103 7030003680 S.RESISTOR ERJ3GEYJ 104 V (100 kΩ)
R105 7030003560 S.RESISTOR ERJ3GEYJ 103 V (10 kΩ)
R106 7030003560 S.RESISTOR ERJ3GEYJ 103 V (10 kΩ)
R108 7030003620 S.RESISTOR ERJ3GEYJ 333 V (33 kΩ)
R110 7030003800 S.RESISTOR ERJ3GEYJ 105 V (1 MΩ)
R112 7030003560 S.RESISTOR ERJ3GEYJ 103 V (10 kΩ)
R114 7030003500 S.RESISTOR ERJ3GEYJ 332 V (3.3 kΩ)
R115 7030003410 S.RESISTOR ERJ3GEYJ 561 V (560 Ω)
R117 7030003680 S.RESISTOR ERJ3GEYJ 104 V (100 kΩ)
R118 7030003520 S.RESISTOR ERJ3GEYJ 472 V (4.7 kΩ)
R119 7030003680 S.RESISTOR ERJ3GEYJ 104 V (100 kΩ)
R200 7030003840 S.RESISTOR ERJ3GEYJ 225 V (2.2 MΩ)
R201 7030003370 S.RESISTOR ERJ3GEYJ 271 V (270 Ω)
R202 7030003320 S.RESISTOR ERJ3GEYJ 101 V (100 Ω)
R203 7030003550 S.RESISTOR ERJ3GEYJ 822 V (8.2 kΩ)
R204 7030003540 S.RESISTOR ERJ3GEYJ 682 V (6.8 kΩ)
C1 4030008470 S.CERAMIC C1608 JB 1H 272K-T-A
C3 4030011600 S.CERAMIC C1608 JB 1C 104KT-N
C4 4030011600 S.CERAMIC C1608 JB 1C 104KT-N
C5 4030006850 S.CERAMIC C1608 JB 1H 471K-T-A
C6 4030008680 S.CERAMIC C2012 JF 1C 105Z-T-A
C7 4030011600 S.CERAMIC C1608 JB 1C 104KT-N
C8 4510004630 S.ELECTROLYTIC ECEV1CA100SR
C9 4030006850 S.CERAMIC C1608 JB 1H 471K-T-A
C10 4030006850 S.CERAMIC C1608 JB 1H 471K-T-A
C11 4030006850 S.CERAMIC C1608 JB 1H 471K-T-A
C15 4030011600 S.CERAMIC C1608 JB 1C 104KT-N
C17 4550006880 S.TANTALUM TEMSVD2 0J 157M-12R
C18 4510004630 S.ELECTROLYTIC ECEV1CA100SR
C20 4030011600 S.CERAMIC C1608 JB 1C 104KT-N
C21 4030011600 S.CERAMIC C1608 JB 1C 104KT-N
C24 4030008900 S.CERAMIC C1608 JB 1C 333K-T-A
C25 4030006850 S.CERAMIC C1608 JB 1H 471K-T-A
C26 4030006850 S.CERAMIC C1608 JB 1H 471K-T-A
C27 4030011600 S.CERAMIC C1608 JB 1C 104KT-N
C28 4030008920 S.CERAMIC C1608 JB 1C 473K-T-A
C29 4030007150 S.CERAMIC C1608 CH 1H 151J-T-A
C31 4030008880 S.CERAMIC C1608 JB 1C 223K-T-A
C32 4030011600 S.CERAMIC C1608 JB 1C 104KT-N
6 - 1
SECTION 6 PARTS LIST
REF ORDER DESCRIPTION
NO. NO. REF ORDER DESCRIPTION NO. NO.

IC1 1130007610 S.IC µPD3140GS-E1 (DS8)
IC2 1110003200 S.IC TA31136FN (EL)
Q1 1530002600 S.TRANSISTOR 2SC4215-O (TE85R)
Q2 1580000670 S.FET 3SK284 (TE85R)
Q3 1530002920 S.TRANSISTOR 2SC4226-T2 R25
Q6 1530003320 S.TRANSISTOR 2SC5108-Y (TE85R)
Q7 1530003320 S.TRANSISTOR 2SC5108-Y (TE85R)
Q8 1530002940 S.TRANSISTOR 2SC4228-T2 R44
Q12 1530003260 S.TRANSISTOR 2SC5006-T1
Q13 1530002280 S.TRANSISTOR 2SC4081 T107 S
Q14 1510000770 S.TRANSISTOR 2SA1586-GR (TE85R)
Q15 1530002280 S.TRANSISTOR 2SC4081 T107 S
Q16 1530002280 S.TRANSISTOR 2SC4081 T107 S
Q201 1530000372 S.TRANSISTOR 2SC3356 R24-T2B
Q202 1590002890 S.FET XRF9482T1
Q203 1530003320 S.TRANSISTOR 2SC5108-Y (TE85R)
D1 1790000620 S.DIODE MA77 (TX)
D2 1790000620 S.DIODE MA77 (TX)
D4 1720000640 S.VARICAP 1SV284 (TPH3)
D5 1720000640 S.VARICAP 1SV284 (TPH3)
D7 1790001260 S.DIODE MA2S077-(TX)
D8 1750000550 S.DIODE 1SS355 TE-17
D9 1750000550 S.DIODE 1SS355 TE-17
D101 1790001260 S.DIODE MA2S077-(TX)
D102 1790001260 S.DIODE MA2S077-(TX)
D103 1790001240 S.DIODE MA2S728-(TX)
FI1 2040001580 S.SAW NSVS647
FI2 2010002320 MONOLITH FL-297 (21.700 MHz)
FI3 2020001410 CERAMIC CFWM450G
X1 6050010900 S.XTAL CR-669 (21.2500 MHz)
X2 6070000210 S.DISCRIMINATOR CDBCA450CX24
L1 6200003280 S.COIL NL 252018T-2R2J
L3 6200007570 S.COIL LL1608-FH18NJ
L4 6200005670 S.COIL ELJRE 12NG-F
L5 6200008270 S.COIL 0.26-1.0-5TL 17N
L6 6200008270 S.COIL 0.26-1.0-5TL 17N
L10 6200005700 S.COIL ELJRE 22NG-F
L11 6200003640 S.COIL MLF1608K 100K-T
L12 6200003640 S.COIL MLF1608K 100K-T
L13 6200002350 S.COIL LQN 1A 27NJ04
L14 6200005720 S.COIL ELJRE 33NG-F
L15 6200007000 S.COIL ELJRE 82NG-F
L21 6200007580 S.COIL LL1608-FH22NJ
L23 6200008430 S.COIL 0.20-1.0-4TL 15N
L25 6200002190 S.COIL MLF2012A 4R7K-T
L201 6200007580 S.COIL LL1608-FH22NJ
L202 6200005720 S.COIL ELJRE 33NG-F
L203 6200007730 S.COIL LQN21A 39NJ04
L204 6200008440 S.COIL LQN21A 8N2D04
L205 6200006670 S.COIL ELJRE 68NG-F
L206 6200005690 S.COIL ELJRE 18NG-F
L208 6200003640 S.COIL MLF1608K 100K-T
L209 6200006980 S.COIL ELJRE R10G-F
L210 6200007600 S.COIL LL1608-FH33NJ
L211 6200007590 S.COIL LL1608-FH27NJ
R1 7030003430 S.RESISTOR ERJ3GEYJ 821 V (820 Ω)
R2 7030003670 S.RESISTOR ERJ3GEYJ 823 V (82 kΩ)
R3 7030003440 S.RESISTOR ERJ3GEYJ 102 V (1 kΩ)
R4 7030003410 S.RESISTOR ERJ3GEYJ 561 V (560 Ω)
R6 7030003520 S.RESISTOR ERJ3GEYJ 472 V (4.7 kΩ)
R7 7030003280 S.RESISTOR ERJ3GEYJ 470 V (47 Ω)
R10 7030003550 S.RESISTOR ERJ3GEYJ 822 V (8.2 kΩ)
R12 7030003440 S.RESISTOR ERJ3GEYJ 102 V (1 kΩ)
R16 7030003260 S.RESISTOR ERJ3GEYJ 330 V (33 Ω)
R19 7030003380 S.RESISTOR ERJ3GEYJ 331 V (330 Ω)
R25 7030003620 S.RESISTOR ERJ3GEYJ 333 V (33 kΩ)
R27 7030003680 S.RESISTOR ERJ3GEYJ 104 V (100 kΩ)
R29 7030003280 S.RESISTOR ERJ3GEYJ 470 V (47 Ω)
R30 7030003620 S.RESISTOR ERJ3GEYJ 333 V (33 kΩ)
R31 7030003620 S.RESISTOR ERJ3GEYJ 333 V (33 kΩ)
[RF UNIT][MAIN UNIT]
S.=Surface mount
C34 4030006880 S.CERAMIC C1608 JB 1H 472K-T-A
C35 4030011600 S.CERAMIC C1608 JB 1C 104KT-N
C36 4030006860 S.CERAMIC C1608 JB 1H 102K-T-A
C40 4030011600 S.CERAMIC C1608 JB 1C 104KT-N
C42 4030006900 S.CERAMIC C1608 JB 1E 103K-T-A
C44 4030011600 S.CERAMIC C1608 JB 1C 104KT-N
C45 4030009650 S.CERAMIC C1608 CH 1H 240J-T-A
C46 4030009650 S.CERAMIC C1608 CH 1H 240J-T-A
C47 4030006850 S.CERAMIC C1608 JB 1H 471K-T-A
C48 4510005430 S.ELECTROLYTIC ECEV0JA220SR
C49 4030011600 S.CERAMIC C1608 JB 1C 104KT-N
C50 4030011600 S.CERAMIC C1608 JB 1C 104KT-N
C51 4030011600 S.CERAMIC C1608 JB 1C 104KT-N
C52 4510005860 S.ELECTROLYTIC ECEV1HA2R2SR
C53 4030011600 S.CERAMIC C1608 JB 1C 104KT-N
C54 4030011600 S.CERAMIC C1608 JB 1C 104KT-N
C55 4510005870 S.ELECTROLYTIC ECEV1HA3R3SR
C56 4030011600 S.CERAMIC C1608 JB 1C 104KT-N
C57 4030011600 S.CERAMIC C1608 JB 1C 104KT-N
C59 4030006850 S.CERAMIC C1608 JB 1H 471K-T-A
C60 4030011600 S.CERAMIC C1608 JB 1C 104KT-N
C61 4030011600 S.CERAMIC C1608 JB 1C 104KT-N
C62 4030011600 S.CERAMIC C1608 JB 1C 104KT-N
C63 4030011600 S.CERAMIC C1608 JB 1C 104KT-N
C64 4510005430 S.ELECTROLYTIC ECEV0JA220SR
C65 4030011600 S.CERAMIC C1608 JB 1C 104KT-N
C67 4030009590 S.CERAMIC C2012 JF 1C 225Z-T-A
C71 4030011600 S.CERAMIC C1608 JB 1C 104KT-N
C72 4030006900 S.CERAMIC C1608 JB 1E 103K-T-A
C73 4030008650 S.CERAMIC C1608 JB 1H 332K-T-A
C74 4030006860 S.CERAMIC C1608 JB 1H 102K-T-A
C75 4030006860 S.CERAMIC C1608 JB 1H 102K-T-A
C79 4030011600 S.CERAMIC C1608 JB 1C 104KT-N
C80 4510005900 S.ELECTROLYTIC ECEV0GA101SR
C81 4030008900 S.CERAMIC C1608 JB 1C 333K-T-A
C82 4030008920 S.CERAMIC C1608 JB 1C 473K-T-A
C83 4030011600 S.CERAMIC C1608 JB 1C 104KT-N
C85 4030011600 S.CERAMIC C1608 JB 1C 104KT-N
C86 4030008960 S.CERAMIC C2012 JB 1C 104K-T-A
C87 4030006850 S.CERAMIC C1608 JB 1H 471K-T-A
C88 4030006850 S.CERAMIC C1608 JB 1H 471K-T-A
C89 4030006850 S.CERAMIC C1608 JB 1H 471K-T-A
C90 4030006850 S.CERAMIC C1608 JB 1H 471K-T-A
C91 4030006850 S.CERAMIC C1608 JB 1H 471K-T-A
C92 4030006850 S.CERAMIC C1608 JB 1H 471K-T-A
C93 4030010760 S.CERAMIC C1608 CH 1H 331J-T-A
C94 4030010760 S.CERAMIC C1608 CH 1H 331J-T-A
C95 4030010760 S.CERAMIC C1608 CH 1H 331J-T-A
C96 4030010760 S.CERAMIC C1608 CH 1H 331J-T-A
C97 4030010760 S.CERAMIC C1608 CH 1H 331J-T-A
C98 4030010760 S.CERAMIC C1608 CH 1H 331J-T-A
C99 4030008650 S.CERAMIC C1608 JB 1H 332K-T-A
J1 6450000130 CONNECTOR HSJ1102-01-540
J3 6450001060 CONNECTOR HSJ1493-01-010
J4 6510017950 S.CONNECTOR 4-175638-4
DS1 5010000120 S.LED LN1371G-(TR)
DS2 5030001750 LCD LD-BU10503J
MC1 7700002160 MICROPHON KUC3523-040245
S1 2260001900 SWITCH SW-149
W2 7030003860 S.JUMPER ERJ3GE JPW V
W3 7030003860 S.JUMPER ERJ3GE JPW V
W7 7030003860 S.JUMPER ERJ3GE JPW V
EP1 8930045510 LCD CONTACT SRCN-2045-SP-N-W
EP2 0910051962 PCB B 5420B
6 - 2
REF ORDER DESCRIPTION
NO. NO. REF ORDER DESCRIPTION NO. NO.

[RF UNIT][RF UNIT]
S.=Surface mount
R33 7030003550 S.RESISTOR ERJ3GEYJ 822 V (8.2 kΩ)
R34 7030003420 S.RESISTOR ERJ3GEYJ 681 V (680 Ω)
R35 7030003640 S.RESISTOR ERJ3GEYJ 473 V (47 kΩ)
R36 7030003360 S.RESISTOR ERJ3GEYJ 221 V (220 Ω)
R37 7030003600 S.RESISTOR ERJ3GEYJ 223 V (22 kΩ)
R45 7030003550 S.RESISTOR ERJ3GEYJ 822 V (8.2 kΩ)
R50 7310003630 S.TRIMMER EVM-1XSX50 BQ4 (473)
R51 7030003770 S.RESISTOR ERJ3GEYJ 564 V (560 kΩ)
R52 7030003460 S.RESISTOR ERJ3GEYJ 152 V (1.5 kΩ)
R53 7030003700 S.RESISTOR ERJ3GEYJ 154 V (150 kΩ)
R54 7030003560 S.RESISTOR ERJ3GEYJ 103 V (10 kΩ)
R55 7030003580 S.RESISTOR ERJ3GEYJ 153 V (15 kΩ)
R56 7030003580 S.RESISTOR ERJ3GEYJ 153 V (15 kΩ)
R57 7030003480 S.RESISTOR ERJ3GEYJ 222 V (2.2 kΩ)
R58 7030003520 S.RESISTOR ERJ3GEYJ 472 V (4.7 kΩ)
R59 7030003580 S.RESISTOR ERJ3GEYJ 153 V (15 kΩ)
R60 7030003680 S.RESISTOR ERJ3GEYJ 104 V (100 kΩ)
R61 7030003560 S.RESISTOR ERJ3GEYJ 103 V (10 kΩ)
R62 7030003230 S.RESISTOR ERJ3GEYJ 180 V (18 Ω)
R64 7030003650 S.RESISTOR ERJ3GEYJ 563 V (56 kΩ)
R65 7030003500 S.RESISTOR ERJ3GEYJ 332 V (3.3 kΩ)
R66 7030003570 S.RESISTOR ERJ3GEYJ 123 V (12 kΩ)
R67 7030003780 S.RESISTOR ERJ3GEYJ 684 V (680 kΩ)
R68 7030003750 S.RESISTOR ERJ3GEYJ 394 V (390 kΩ)
R69 7030003510 S.RESISTOR ERJ3GEYJ 392 V (3.9 kΩ)
R70 7030003610 S.RESISTOR ERJ3GEYJ 273 V (27 kΩ)
R71 7030003560 S.RESISTOR ERJ3GEYJ 103 V (10 kΩ)
R72 7030003550 S.RESISTOR ERJ3GEYJ 822 V (8.2 kΩ)
R73 7030003780 S.RESISTOR ERJ3GEYJ 684 V (680 kΩ)
R74 7030003750 S.RESISTOR ERJ3GEYJ 394 V (390 kΩ)
R75 7030003560 S.RESISTOR ERJ3GEYJ 103 V (10 kΩ)
R76 7030003510 S.RESISTOR ERJ3GEYJ 392 V (3.9 kΩ)
R83 7030003560 S.RESISTOR ERJ3GEYJ 103 V (10 kΩ)
R86 7030003300 S.RESISTOR ERJ3GEYJ 680 V (68 Ω)
R88 7030003520 S.RESISTOR ERJ3GEYJ 472 V (4.7 kΩ)
R93 7030003200 S.RESISTOR ERJ3GEYJ 100 V (10 Ω)
R202 7030003600 S.RESISTOR ERJ3GEYJ 223 V (22 kΩ)
R205 7030003560 S.RESISTOR ERJ3GEYJ 103 V (10 kΩ)
R206 7310003610 S.TRIMMER EVM-1XSX50 B14 (103)
R207 7030003440 S.RESISTOR ERJ3GEYJ 102 V (1 kΩ)
R208 7030003440 S.RESISTOR ERJ3GEYJ 102 V (1 kΩ)
R209 7030003360 S.RESISTOR ERJ3GEYJ 221 V (220 Ω)
R213 7030003360 S.RESISTOR ERJ3GEYJ 221 V (220 Ω)
R301 7030003550 S.RESISTOR ERJ3GEYJ 822 V (8.2 kΩ)
R302 7030003560 S.RESISTOR ERJ3GEYJ 103 V (10 kΩ)
R303 7030003640 S.RESISTOR ERJ3GEYJ 473 V (47 kΩ)
R304 7030003370 S.RESISTOR ERJ3GEYJ 271 V (270 Ω)
R305 7030003510 S.RESISTOR ERJ3GEYJ 392 V (3.9 kΩ)
R306 7030003550 S.RESISTOR ERJ3GEYJ 822 V (8.2 kΩ)
R310 7030003740 S.RESISTOR ERJ3GEYJ 334 V (330 kΩ)
R311 7030003400 S.RESISTOR ERJ3GEYJ 471 V (470 Ω)
R312 7030003670 S.RESISTOR ERJ3GEYJ 823 V (82 kΩ)
R313 7030003200 S.RESISTOR ERJ3GEYJ 100 V (10 Ω)
C1 4030006860 S.CERAMIC C1608 JB 1H 102K-T-A
C2 4030008920 S.CERAMIC C1608 JB 1C 473K-T-A
C3 4030008920 S.CERAMIC C1608 JB 1C 473K-T-A
C5 4030006850 S.CERAMIC C1608 JB 1H 471K-T-A
C6 4030006850 S.CERAMIC C1608 JB 1H 471K-T-A
C7 4030007050 S.CERAMIC C1608 CH 1H 220J-T-A
C8 4030006970 S.CERAMIC C1608 CH 1H 060D-T-A
C9 4030010780 S.CERAMIC C1608 CH 1H 1R5C-T-A
C10 4030007010 S.CERAMIC C1608 CH 1H 100D-T-A
C11 4030009470 S.CERAMIC C1608 CH 1H R75C-T-A
C12 4030006990 S.CERAMIC C1608 CH 1H 080D-T-A
C13 4030007090 S.CERAMIC C1608 CH 1H 470J-T-A
C16 4030006850 S.CERAMIC C1608 JB 1H 471K-T-A
C17 4340000180 S.MYLAR ECHU 1C 333JB5
C20 4030006850 S.CERAMIC C1608 JB 1H 471K-T-A
C21 4030006850 S.CERAMIC C1608 JB 1H 471K-T-A
C23 4030006980 S.CERAMIC C1608 CH 1H 070D-T-A
C26 4030006850 S.CERAMIC C1608 JB 1H 471K-T-A
C28 4030006850 S.CERAMIC C1608 JB 1H 471K-T-A
C30 4030006980 S.CERAMIC C1608 CH 1H 070D-T-A
C31 4030006980 S.CERAMIC C1608 CH 1H 070D-T-A
C32 4030006970 S.CERAMIC C1608 CH 1H 060D-T-A
C35 4030006860 S.CERAMIC C1608 JB 1H 102K-T-A
C36 4030006990 S.CERAMIC C1608 CH 1H 080D-T-A
C42 4030007010 S.CERAMIC C1608 CH 1H 100D-T-A
C43 4030007040 S.CERAMIC C1608 CH 1H 180J-T-A
C44 4030007060 S.CERAMIC C1608 CH 1H 270J-T-A
C46 4030007020 S.CERAMIC C1608 CH 1H 120J-T-A
C47 4030007050 S.CERAMIC C1608 CH 1H 220J-T-A
C48 4030007050 S.CERAMIC C1608 CH 1H 220J-T-A
C50 4030007020 S.CERAMIC C1608 CH 1H 120J-T-A
C51 4030007020 S.CERAMIC C1608 CH 1H 120J-T-A
C52 4030006930 S.CERAMIC C1608 CH 1H 020C-T-A
C53 4030009540 S.CERAMIC C1608 CH 1H 1R5B-T-A
C54 4030009350 S.CERAMIC C1608 CH 1H 3R5B-T-A
C55 4030006850 S.CERAMIC C1608 JB 1H 471K-T-A
C56 4030006910 S.CERAMIC C1608 CH 1H 0R5C-T-A
C57 4030009520 S.CERAMIC C1608 CH 1H 020B-T-A
C60 4550006350 S.TANTALUM TEMSVB2 1A 226M-8L
C61 4030006960 S.CERAMIC C1608 CH 1H 050C-T-A
C62 4340000180 S.MYLAR ECHU 1C 333JB5
C63 4610002150 S.TRIMMER CTZ3S-10A-W1-AF
C64 4030009660 S.CERAMIC C1608 JF 1C 224Z-T-A
C65 4030006850 S.CERAMIC C1608 JB 1H 471K-T-A
C67 4030011600 S.CERAMIC C1608 JB 1C 104KT-N
C68 4550006590 S.TANTALUM ECST1CY684R
C69 4030006860 S.CERAMIC C1608 JB 1H 102K-T-A
C70 4030006850 S.CERAMIC C1608 JB 1H 471K-T-A
C72 4030006850 S.CERAMIC C1608 JB 1H 471K-T-A
C73 4030011600 S.CERAMIC C1608 JB 1C 104KT-N
C74 4030006850 S.CERAMIC C1608 JB 1H 471K-T-A
C75 4030006850 S.CERAMIC C1608 JB 1H 471K-T-A
C76 4030006850 S.CERAMIC C1608 JB 1H 471K-T-A
C77 4030007050 S.CERAMIC C1608 CH 1H 220J-T-A
C78 4030007110 S.CERAMIC C1608 CH 1H 680J-T-A
C79 4510004630 S.ELECTROLYTIC ECEV1CA100SR
C80 4030009660 S.CERAMIC C1608 JF 1C 224Z-T-A
C81 4030008920 S.CERAMIC C1608 JB 1C 473K-T-A
C82 4030011600 S.CERAMIC C1608 JB 1C 104KT-N
C83 4030008680 S.CERAMIC C2012 JF 1C 105Z-T-A
C84 4030006850 S.CERAMIC C1608 JB 1H 471K-T-A
C85 4550006480 S.TANTALUM TEMSVA 1C 475M-8L
C86 4030011810 S.CERAMIC C1608 JB 1A 224K-T-N
C87 4030011600 S.CERAMIC C1608 JB 1C 104KT-N
C88 4550006250 S.TANTALUM TEMSVA 1A 106M-8L
C89 4030009880 S.CERAMIC C1608 JB 1H 682K-T-A
C90 4030006900 S.CERAMIC C1608 JB 1E 103K-T-A
C91 4030008920 S.CERAMIC C1608 JB 1C 473K-T-A
C92 4030006900 S.CERAMIC C1608 JB 1E 103K-T-A
C93 4030006900 S.CERAMIC C1608 JB 1E 103K-T-A
C95 4030006850 S.CERAMIC C1608 JB 1H 471K-T-A
C96 4030006850 S.CERAMIC C1608 JB 1H 471K-T-A
C101 4030006920 S.CERAMIC C1608 CH 1H 010C-T-A
C102 4030009520 S.CERAMIC C1608 CH 1H 020B-T-A
C201 4030006850 S.CERAMIC C1608 JB 1H 471K-T-A
C202 4030007050 S.CERAMIC C1608 CH 1H 220J-T-A
C203 4030007050 S.CERAMIC C1608 CH 1H 220J-T-A
C204 4030006970 S.CERAMIC C1608 CH 1H 060D-T-A
C205 4030006860 S.CERAMIC C1608 JB 1H 102K-T-A
C206 4030006860 S.CERAMIC C1608 JB 1H 102K-T-A
C207 4030006990 S.CERAMIC C1608 CH 1H 080D-T-A
C208 4030007000 S.CERAMIC C1608 CH 1H 090D-T-A
C209 4030006970 S.CERAMIC C1608 CH 1H 060D-T-A
C210 4030006980 S.CERAMIC C1608 CH 1H 070D-T-A
C212 4030006860 S.CERAMIC C1608 JB 1H 102K-T-A
C215 4030006850 S.CERAMIC C1608 JB 1H 471K-T-A
C216 4030009540 S.CERAMIC C1608 CH 1H 1R5B-T-A
C217 4030006970 S.CERAMIC C1608 CH 1H 060D-T-A
C218 4030006850 S.CERAMIC C1608 JB 1H 471K-T-A
C219 4030006960 S.CERAMIC C1608 CH 1H 050C-T-A
J1 6910007660 CONNECTOR IMSA-9210B-1-02T
J2 6510018170 S.CONNECTOR 4-175643-4
W5 7030003860 S.JUMPER ERJ3GE JPW V
W201 7030003860 S.JUMPER ERJ3GE JPW V
W202 7030003860 S.JUMPER ERJ3GE JPW V
EP1 0910051972 PCB B 5421B
EP2 6910013310 S.BEAD MMZ1608D121B
6 - 3
REF ORDER DESCRIPTION
NO. NO. REF ORDER DESCRIPTION NO. NO.

SECTION 7 MECHANICAL PARTS AND DISASSEMBLY
7 - 1
Screw abbreviations A, B0, BT: Self-tapping
PH: Pan head
FH: Flat head
BiH: Bind head
NI: Nickel
SUS: Stainless
ZK: Black
SP1 2510000960 Speaker K036NA500-26 1
EP1 3310002110 Antenna 2123 ANT 1
MP1 8210015181 2045 front panel-1 [BLACK] 1
8210016101 2045 front panel (A)-1 [YELLOW] 1
MP2 8210015191 2045 rear panel-1 [BLACK] 1
8210016111 2045 rear panel (A)-1 [YELLOW] 1
MP3 8110006400 2045 rear cover [BLACK] 1
8110006720 2045 rear cover (A) [YELLOW] 1
MP4 8110006410 2045 lock cover [BLACK] 1
8110006730 2045 lock cover (A) [YELLOW] 1
MP5 8310042680 2045 window plate 1
MP7 8210015220 Panel 2045 reflector 1
MP8 8610010570 Knob N-265 1
MP9 8930045192 2045 top seal-2 1
MP10 8930045230 2045 4-key 1
MP11 8930045200 2045 PTT button 1
MP12 8930046990 2045 main seal (A) 1
MP13 8930045220 2045 BATT seal 1
MP14 8930046280 2045 ANT termainal 1
MP15 8930045350 2045 A-terminal 1
MP16 8930045360 2045 B-terminal 1
MP17 8930045370 2045 C-terminal 2
MP19 8930045740 2045 sheet 1
MP20 8830001370 2045 VR nut 1
MP22 8930045750 Seal O-ring (X) 1
MP23 8830000110 Nut M4 1
MP24 8810009560 Screw PH BO 2x6 ZK (BT) 4
MP25 8810008640 Screw FH BO 2x4 NI-ZU (BT) 2
MP27 8830001390 2045 insert nut 1
MP29 8930019790 891 terminal rubber 3
MP30 8810008990 Screw PH BO 2x10 ZK (BT) 1
REF. NO. ORDER NO. DESCRIPTION QTY.
[CHASSIS PARTS]
REF. NO. ORDER NO. DESCRIPTION QTY.
[MAIN UNIT]
DS2 5030001750 LCD LD-BU10503J 1
EP1 8930045510 LCD contact SRCN-2045-SP-N-W 1
MP2 8510012840 2347 main shield 1
MP3 8930051770 2347 sheet 1
MP1 8930045331 2045 belt clip-1 1
MP2 8820001040 2045 screw 1
REF. NO. ORDER NO. DESCRIPTION QTY.
REF. NO. ORDER NO. DESCRIPTION QTY.
[RF UNIT]
MP1 8510011570 2045 VCO case 1
MP2 8510012830 2347 RF-B shield 1
MP4 8510012820 2347 RF-A shield 1
MP5 893002930 Non-woven sheet 1
[UNPACKING]
MP1 MP2

7 - 2
UNIT abbreviation (C): CHASSIS PARTS, (M): MAIN UNIT, (RF): RF UNIT
MP1 (C)
SP1 (C)
MP10 (C)
MP12 (C)
EP1 (M)
DS2 (M)
MP7 (C)
MP5 (C)
MAIN unit
MP20 (C)
MP25 (C) MP4 (RF)
MP14 (C)
MP17 (C)
MP2 (RF)
MP16 (C)
MP23 (C)
MP5 (RF)
MP11 (C)
MP13 (C)
MP4 (C) MP2 (C)
MP15 (C)
MP25 (C)
MP9 (C)
MP8 (C)
RF unit MP24 (C)
MP30 (C)
MP24 (C)
MP22 (C)
EP1 (C)
MP19 (C) MP3 (C)
MP1 (RF)

SECTION 8 SEMI-CONDUCTOR INFORMATION
8 - 1
• DIODES
• TRANSISTOR AND FET’S
2SA1362-GR
(Symbol: AEG)
2SC4213-B
(Symbol: AB)
2SC5108-Y
(Symbol: MC)
UN9214
(Symbol: 8A)
DTC114EUAT106
(Symbol: 14)
DTA123JUAT106
(Symbol: 132) XRF9482T1
(Symbol: 9482) UMZ1NTR (Symbol: Z1) UMZ2NTR (Symbol: Z2)
2SJ144-Y
(Symbol:VX) 2SK1829 (Symbol: K1) 3SK284 (Symbol: U1)
2SC4215-O
(Symbol: QO) 2SC4226-T2 R25 (Symbol: R25) 2SC4228-T2 R44 (Symbol: R44) 2SC5006-T1 (Symbol: 24)
2SA1586-GR
(Symbol: SG) 2SB798-T2 DK (Symbol: DK) 2SC3356 R24-T2B (Symbol: R24) 2SC4081T107S (Symbol: BS)
DTA144EUAT106
(Symbol: 16)
B
E
C
B
E
CB
E
C
B
E
C
EC
B
EC
B
EC
B
EC
B
EC
B
B
EC
S
DG
B
ECEC
B
EC
B
EC
B
E1
B1
C2
C1
B2
E2
E1
B1
B2
C1
E2
C2
E
C
B
E
B
C
E
D
S
G2
G1
S
D
S
G
1SS355TE-17
(Symbol: A) 1SV284 (Symbol:TL ) MA77 (Symbol: 4B)
MA2S077
(Symbol: S)
AC
MA2S728
(Symbol: B)
AC

SECTION 9 BOARD LAYOUTS
9-1 MAIN UNIT
•TOP VIEW
9 - 1
C20
C97
C96
R26 R89 C9
C42
R22
R27
C50
R24
R25 R55
R56 C49
C95
R61 C15
C75
C71
R90
C74
R49
R200
R201
R114
R115
R119
R204
W3
R98
C53
C60
C81
R74 R76 C63
R23 R80
R78
C88
W7
C90
C62
R102
R12
C35
C34
R10
C25
C3 R9
R31
R202
R118
R110
R45
R36
C36
C31
R42
R41
C32
R38
R46
C7 R13
C4
C79
R50
C5
R43
R37
C89
C65 R77
C57
IC6
IC5
C55
Q14
Q27
DS2
Q101
Q11
D101
D5
DS1
Q28
D2
C48
C18
C52
C17
C8 Q7
Q3
Q6
MC1
C80
Q25
D4
C67
Q18
C64

9 - 2
R87
C72
C59
Q23
IC9
J4
Q5
IC3
Q10
R58
R88
R86 C21
C47
R54
C44
R106 C82 J1
J3
S1
R112
C86
IC1
TEST
B5420B
X1
R68 R81
R72
C61
C46
R63
C45
R79
C87
R97
R99
C85
C99
R2
R30
C1
R39
C73
R40
R64
W2
R5
R53
C24C98
C93
R52
R51
C83
Q2
Q12
Q1
Q29
R32
R35
C28
C91
C10
R14
C51
R62
R103
R101
R117
R105
R203
R108
R100
R96
R57
C26 R34 C40 R95
C11
R33
C27
R7
R6
C29
C6
IC2
W6 R4
R59
R66
R65
R70
R71
R67
C92 C94
R94 C56
C54
R69
SHIFT
CK
DATA
STB
SQL
SENS
AF
PSC
BATT
MOD
T+3
VOL
R+3
GND
113
2
J4
14
to RF unit J2
•BOTTOM VIEW