Icom IC-M304 User manual
S-14311XZ-C1
Dec. 2006
VHF MARINE TRANSCEIVER
iC-m304
This service manual describes the latest service information
for the IC-M304 VHF MARINE TRANSCEIVER at the time
of publication.
NEVER connect the transceiver to an AC outlet or to a DC
power supply that uses more than 15 V. This will ruin the
transceiver.
DO NOT reverse the polarities of the power supply when
connecting the transceiver.
DO NOT apply an RF signal of more than 20 dBm (100 mW) to
the antenna connector. This could damage the transceiver’s
front end.
To upgrade quality, any electrical or mechanical parts and
internal circuits are subject to change without notice or
obligation.
MODEL VERSION SYMBOL COLOR
IC-M304 U.S.A.
[USA] Black
[USA-01] Super White
[USA-02] Gray
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>
1110003491 S.IC TA31136FNG IC-M304 MAIN UNIT 5 pieces
8820001210 Screw 2438 screw IC-M304 CHASSIS 10 pieces
Addresses are provided on the inside back cover for your
convenience.
Icom, Icom Inc. and logo are registered trademarks of Icom Incorporated (Japan) in the United States, the United
Kingdom, Germany, France, Spain, Russia and/or other countries.
ORDERING PARTS
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 tuning 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 50 dB to 60 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.
REPAIR NOTES
INTRODUCTION CAUTION
CONTENTS
SECTION 1 SPECIFICATIONS
SECTION 2 INSIDE VIEWS
SECTION 3 DISASSEMBLY INSTRUCTIONS
SECTION 4 CIRCUIT DESCRIPITON
4-1 RECEIVER CIRCUITS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
4-2 TRANSMITTER CIRCUITS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2
4-3 PLL CIRCUITS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3
4-4 DSC CIRCUITS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4
4-5 LOGIC CIRCUITS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4
4-6 POWER SUPPLY CIRCUITS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4
4-7 PORT ALLOCATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-5
SECTION 5 ADJUSTMENT PROCEDURES
5-1 PREPARATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1
5-2 FREQUENCY ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2
5-3 TRANSMIT ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-3
5-4 RECEIVE ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-4
SECTION 6 PARTS LIST
SECTION 7 MECHANICAL PARTS AND DISASSEMBLY
SECTION 8 SEMICONDUCTOR INFORMATION
SECTION 9 BOARD LAYOUTS
SECTION 10 BLOCK DIAGRAM
SECTION 11 VOLTAGE DIAGRAM
11-1 LOGIC UNIT (Incl. SQL and VR UNITs) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-1
11-2 MAIN UNIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-2
SECTION 12 HM-164B/SW/G
1 - 1
SECTION 1 SPECIFICATIONS
MGENERAL
• Frequency coverage : TX
RX
156.025–157.425 MHz
156.050–163.275 MHz
• Type of emission : 16K0G3E (FM), 16K0G2B (DSC)
• Channel spacing : 25 kHz
• Antenna impedance : 50 Ω(Nominal)
• Operating temperature range : –20˚C to +60˚C; –4˚F to +140˚F
• Power supply requirement : 13.8 V DC (negative ground)
• Current drain (At 13.8 V DC ; approx.) : Receiving
Transmitting
1.5 A (at max. audio)
5.5 A (at 25 W)
• Dimensions (Projections not included) : 153(W)×67(H)×133(D) mm; 6 1/32(W)×2 5⁄8(H)×5 1⁄4(D) in.
• Weight (Approx.) : 825 g; 1.8 Ib
MTRANSMITTER
• Output power (At 13.8 V DC) : 25 W (High)/1 W (Low)
• Modulation : Variable reactance frequency modulation
• Maximum frequency deviation : ±5.0 kHz
• Frequency stability : ±10 ppm
• Spurious emissions : Less than –70 dBc (at 25 W)
Less than –56 dBc (at 1 W)
• Adjacent channel power : More than 70 dB
• Audio harmonic distortion : Less than 10% (at 60% deviation)
• Residual modulation : More than 40 dB
• Audio frequency response : +1 dB to –3 dB of 6 dB oct. from 300 Hz to 2500 Hz
• Microphone impedance : 2 kΩ
MRECEIVER
• Receive system : Double conversion superheterodyne system
• Intermediate frequencies : 1st IF: 21.7 MHz, 2nd IF: 450 kHz
• Sensitivity : –13 dBµ typical at 12 dB SINAD
• Squelch sensitivity : Less than –13 dBµ
• Adjacent channel selectivity : More than 70 dB
• Spurious response : More than 70 dB
• Intermodulation rejection ratio : More than 70 dB
• Hum and noise : More than 40 dB
• Audio frequency response : +1 dB to –3 dB of –6 dB oct. from 300 Hz to 3000 Hz
• Audio output power : 4.5 W typical at 10% distortion with a 4 Ω load
• Audio output impedance : 4 Ω
Specifications are measured in accordance with TIA/EIA 603
All stated specifications are subject to change without notice or obligation.
1 - 2
:E
TON
38
dn
a
2
8
,
1
8,4
6
,16
,
32
,
1
2
,3
,s
len
n
ahcxe
lp
miS T
O
N
N
A
C
.sr
e
t
a
w
.A
.S
.
U
nici
l
bu
p
la
ren
e
g
e
h
t
y
b
d
es
uyllufw
a
l
eb
*1.y
l
nore
w
o
p
w
o
L*2.r
ew
o
p
hg
i
h
yr
a
t
n
e
m
oM *3.y
ln
o
no
i
tar
e
poCS
D
)zH
M(ycneuqerFrebmunlennah
C
057.06
105
1
.
6513030
051.651051.651A30
0
08.061002.6
5140
00
7.061001.6512020
002
.651002.651A40
058.0
610
52.65150
052.6
5
1052.651
A
50A50
00
3
.
6
5100
3
.
6
5160
60 6
0
05
9
.
06
10
5
3
.
65
1
70
053.651053.651A
70A7
0
004.6
5
10
0
4
.
651808080
054.651
0
54.651909090
0
0
5
.
651
0
05.651010101
0
55.65105
5
.651111
11
1
00
6
.
6
51006
.6
5
12
12121
*
31 2*
3
11
056.651056.651
31
4
141
00
7
.
65
1
0
0
7.6
5
1
4
1
*51 2*51 1
05
7
.
65
1
0
5
7.6
5
1
*
5
11
6
16
1
0
0
8
.
6
51008.651
61
*7
11*71 1
0
58.651058
.
65
1
7
1
005.1
6
1
0
0
9.651
81
A
81
A
8
1
0
0
9
.
65
1
0
09.6
5
1
0
55.16105
9
.
6
51
91
059.
65
10
5
9.651A91A9
1
*
020
210
0
6.
1
61000.75
1
0
2
0
0
0
.7
51
00
0.7
51
A02
050.65105
0
.
651A10
ASU
10
056.061050.65110
NAC
eviece
RtimsnarT
TNI
)zH
M
(
y
cn
e
uqe
rFrebmunlenn
ahC
00
7
.
1610
0
1
.75
1
2
2
0
0
1
.75
1001
.
7
51A22A2
2
0
57.
1
6
1051
.7513232
0
5
6
.1
6
1
ylno
xR
b
1
2
051
.
7
5105
1
.751
A32
0
0
8
.16
1002.75
1424242
05
8.
161052.7515252 5
2
05
8.
16
1yl
no
x
Rb
52
0
09.
1
61
0
03.7
516
2
6
26
2
059.161
053.751727272
0
0
0
.
26100
4
.
7
51828282
000.
2
61ylnoxRb82
526.061520.65
10
606
5
7
6.06
1
57
0
.
6
51
1
6
5
7
0
.
65
1
57
0.6
51
A1
6
A
1
6
527.
06
1
5
21.6
5
126
5
21.65
1
5
21.
651
A
26
5
77.0615
7
1.65136
571.651571.65
1
A36
52
8.0
61522.
65
146
4
6
52
2
.
6
51522.6
5
1A4
6A46
5
7
8
.
06
1
57
2.6
51
56
5
72.65
1
5
7
2
.
651
A
56A56 A5
6
52
9
.
06
1
5
23.6
51
66
*A6
6
A
66 1523.651523.651A6
6
*76 2573.651573.6517
6
7
6
050
.
7
5105
0
.751
A12A12
ASU
0
5
6
.1
6
1
050.
7
5
11212
N
A
C
e
v
i
e
c
e
Rtimsna
rT
TN
I
)zH
M
(
ycne
uq
e
rF
r
eb
mu
n
l
ennah
C
5
7
5
.65
1
575
.6
51
1
7
1
71
7
5
26
.
651
5
26
.
6
5
1
2727 2
7
5
7
6
.6
5
1
5
7
6
.6
51
37373
7
*
0
73*
0
735
2
5
.6
5
1
5
25
.651
*
0
73
5
27
.
6
5
1
5
2
7
.6
5
1
4
747 47
*
5
71*5
71577
.
6
5
1
5
77
.
6
5
1
*57 1
*
67 1*
6
715
2
8
.6
51
5
28
.
651
*
6
71
*
7
71*7
71578
.6
51
5
78
.
6
51
77
525
.
1
61
5
2
9
.6
5
1
87
529
.
6
51
5
2
9.
6
5
1
A
87
A
87
57
5
.
1
61
5
79
.
6
5
1
97
579
.6
51
57
9
.
6
51A
97
A
9
7
5
2
6
.1
6
1
5
20
.75
1
08
5
2
0
.7
5
1
52
0
.
751A
0
8
A08
5
7
6
.1
6
1
5
7
0
.75118
5
70
.
7
5
1
5
7
0
.
75
1
A
18A18
5
27
.
1
6
1
5
2
1
.75
1
2
8
52
1
.
7
51
52
1
.
75
1A
28A28
57
7
.
16
1
5
71.
75
1
38
3
8
5
7
1
.7
5
1
57
1.
751A
3
8
A
38
5
7
7
.161ylnoxRb38
5
28.1615
2
2
.
751484
848
52
2
.
7
51
52
2
.
75
1
A48
5
78.1
61
57
2
.
7
51
5
858 5
8
572.7
5
157
2
.751
A
58
529.161523.751686868
57
4
.6
51
57
4.
651
9
6
9
696
8
6
AS
U
52
4
.6
51
52
4.
651
8686
N
A
C
e
v
i
e
ceR
t
i
msnar
T
TN
I
)zH
M
(
ycn
euq
e
rF
r
eb
m
un
len
na
hC
5
2
0.
2
6
1
524
.7
5188
8
88
8
5
2
4.
7
5
1
5
24
.
7
5
1A8
8
5
7
3.
7
5
1
573
.7
51A
7
8
5
7
9.
1
6
1
573
.7
5178
7
87
8
A
6
8
A
SU
5
2
3
.75
1
5
2
3.
7
5
1
N
A
C
e
v
i
e
ceR
t
i
m
s
nar
T
T
N
I
)
z
H
M(
y
c
n
euqe
rF
5
2
4
.
2
6
1yl
no
X
R
05
4
.
2
61yl
n
o
XR
005
.
2
6
1
yl
no
XR
5
7
4
.2
6
1yl
no
X
R
5
2
5
.
2
6
1yl
no
X
R
0
56
.
1
6
1yl
no
X
R
577.
1
61yl
n
o
XR
57
2
.3
61yl
no
XR
004
.2
61y
l
n
o
X
R
055
.
2
61yl
n
o
X
R
e
v
i
e
ce
R
t
i
m
s
n
a
r
T
len
n
ah
c
X
W
4
5
6
3
7
8
9
01
2
1
• CHANNEL LIST
2 - 1
SECTION 2 INSIDE VIEWS
•
MAIN
UNIT
• LOGIC UNIT
TX POWER MODULE
(IC4: S-AV35A)
2nd IF filter
(FI3: LT450EW)
DSC DECODER
(IC3: NJM2211M)
IDC/LPF
(IC10: NJM4558M)
MIC MUTE SWITCH
(IC7: TC7W66EU)
1st IF filters
(FI1: FL-368,
FI2: FL-399A)
IF IC
(IC1: TA31136FN) PLL IC
(IC8: uPD3140GS)
VCO
DIMMER CONTROL CIRCUIT
(Q2: KTA1664
Q3, Q4: KTC4075
)
CPU
(IC1: M37560EFGP)
EEPROM
(IC4: HN58X2464T1)
TONE BUFFER
(IC6: NJM2904M)
3 - 1
SECTION 3 DISASSEMBLY INSTRUCTION
1. Removing the front panel
qUnscrew 8 screws A, as shown below, and then remove
the case in the direction of the arrow.
2. Removing the MAIN UNIT
qUnsolder the external speaker cable F(2 points), and
DC cable G(2 points), on the bottom side of the MAIN UNIT.
wUnsolder the antenna connector B(3 points).
eRemove the clip C.
rUnscrew 2 screws D, and 7 screws E, to remove the MAIN UNIT.
3. Removing the LOGIC UNIT
qDisconnect 2 cables Iand K.
wUnsolder 2 points H.
eUnscrew 4 screws J, to remove the LOGIC UNIT.
A
A
A
RONT ANEL
CASE
EC
E
B
D
G
F
speaker
MAIN UNIT
DC cable
I
J
K
H
LOGIC UNIT
4 - 1
SECTION 4 CIRCUIT DESCRIPTION
4-1 RECEIVER CIRCUITS
4-1-1 ANTENNA SWITCHING CIRCUIT
(MAIN UNIT)
The antenna switching circuit functions as a low-pass filter
while receiving and as resonator circuit while transmitting.
The circuit does not allow transmit signals to enter receiver
circuits.
Received signals enter the MAIN unit from the antenna
connector and pass through the low-pass filter (L1, L2, C3
–C5). The signals are then applied to the RF circuit via the
antenna switching circuit (D2).
4-1-2 RF CIRCUIT (MAIN UNIT)
The RF circuit amplifies signals within the range of
frequency coverage and filters out-of-band signals.
The signals from the antenna switching circuit pass through
a tunable bandpass filter (D4, L6, C12–C16) where the
object signals are led to the RF amplifier circuit (Q1).
The amplified signals at Q1, L7–L9 are applied to other
tunable bandpass filter (D5–D7, C22–C26, C29–C34) to
suppress unwanted signals and improve the selectivity. The
signals are then applied to the 1st mixer circuit.
4-1-3 1ST MIXER AND 1ST IF CIRCUITS
(MAIN UNIT)
The 1st mixer circuit converts the received signal to a fixed
frequency of the 1st IF signal with a 1st LO (VCO output)
frequency. By changing the 1st LO frequency, only the
desired frequency will be passed through two crystal filters
at the next stage of the mixer.
The signals from the RF circuit are mixed with the VCO
signals at the 1st mixer circuit (Q2) to produce a 21.7 MHz
1st IF signal.
The 1st IF signal is applied to two crystal filters (FI1, FI2)
to suppress out-of-band signals and is then amplified at the
IF amplifier (Q4). The amplified signal is applied to the 2nd
mixer circuit (IC1).
4-1-4 2ND IF AND DEMODULATOR CIRCUITS
(MAIN UNIT)
The 2nd mixer circuit converts the 1st IF signal to a 2nd IF
signal. A double superheterodyne system (which converts
receive signals twice) improves the image rejection ratio
and obtains stable receiver gain.
The FM IF IC (IC1) contains the 2nd local oscillator, 2nd
mixer, limiter amplifier, quadrature detector, and noise
detector circuits, etc.
The 1st IF signal from Q4 is applied to the 2nd mixer
section of IC1 (pin 16), and is mixed with a 21.25 MHz 2nd
LO signal generated at the PLL circuit using the reference
frequency (21.25 MHz) to produce a 450 kHz 2nd IF signal.
The 2nd IF signal from IC1 (pin 3) is passed through the
ceramic filter (FI3), where unwanted signals are suppressed,
and is then applied to the 2nd IF (limiter) amplifier in IC1 (pin
5). The signal is applied to the FM detector section in IC1
for demodulation into AF signals.
The FM detector circuit employs a quadrature detection
method (linear phase detection), which uses a ceramic
discriminator (X1) for phase delay to obtain a non-adjusting
circuit. The detected signal from IC1 (pin 9) is applied to the
AF circuit.
4-1-7 WEATHER ALERT DECODER CIRCUIT
(MAIN UNIT AND LOGIC BOARD)
When the weather alert function is activated and a 1050
Hz alert tone from an NOAA weather radio broadcast is
received, the IC-M304 emits beep tones and indicates
flashing “ALT” on the display to inform of an emergency
weather report on the air.
AF signals from the FM IF IC (IC1, pin 9) pass through
the low-pass filter (Q5, R52–R58, C83–C86) via the
“DET” signal, and are then applied to A/D port of the CPU
(LOGIC board; IC1, pin 8) as “WXDEC” signal. The CPU
has the tone decoder function. When a 1050 Hz signal is
detected by software decode, the CPU (LOGIC BOARD;
IC1) controls beep tones and the “ALT” indicator.
Mixer
16
Limiter
amp.
2nd IF filter
450 kHz
PLL IC
IC8
X2
21.25 MHz
X1
(21.25 MHz)
RI
IC1 TA3113 F
13
1st IF (21.7 MHz)
from the IF amplifier (Q4)
QL signal to the CPU
(LOGIC board; IC1)
11109
87 5 3
QLV signal to the R1
on the QL board
R5
2
17 16
Active
filter
FI3
Noise
detector
FM
detector
C65
C75
C64
C73
R50
R48
R47
C74
R42
R44
C67
R49
R43
WXDEC signal to the
CPU (LOGIC board; IC1)
D CDEC signal to the
CPU (LOGIC board; IC1)
DETO signal to the
AF mute switch (IC7)
LPF
BPF
DC
DEC.
• 2ND IF CIRCUITS
4 - 2
4-2 TRANSMITTER CIRCUITS
4-2-1 MICROPHONE AMPLIFIER CIRCUIT
(MAIN UNIT)
The microphone amplifier circuit amplifies audio signals with
+6 dB/octave pre-emphasis from the microphone to a level
needed at the modulation circuit.
The AF signals from the microphone are amplified at
the microphone amplifier (IC10A) via the analog switch
(IC7A, pins 1, 2). A capacitor (C223) and resistor (R171)
are connected to the amplifier to obtain the pre-emphasis
characteristics.
The amplified signals are applied to the IDC amplifier and
are passed through the splatter filter (IC10B, pins 5–7) to
suppress unwanted 3 kHz or higher signals. The filtered
signals are then applied to the modulation circuit.
4-2-2 MODULATION CIRCUIT (MAIN UNIT)
The modulation circuit modulates the VCO oscillating signal
(RF signal) using the microphone audio signals.
Audio signals from the splatter filter (IC10B) pass through
the frequency deviation adjustment pot (R184) and are then
applied to the modulation circuit (D11, D12) to change the
reactance of D11–D14 and modulate the oscillated signal at
the VCO (Q13, Q14).
4-2-3 DRIVE AMPLIFIER CIRCUIT (MAIN UNIT)
The drive amplifier circuit amplifies the VCO oscillating
signal to a level needed at the power amplifier.
The VCO output is buffer-amplified by Q15 and Q16, and is
then applied to the Tx/Rx switch (D16, D17). The transmit
signal from the Tx/Rx switch is amplified to the YGR (Q17)
amplifiers to obtain an approximate 10 mW signal level. The
amplified signal is then applied to the RF power amplifier
(IC4).
4-2-4 POWER AMPLIFIER CIRCUIT (MAIN UNIT)
The power amplifier circuit amplifies the driver signal to an
output power level.
IC4 is a power module which has amplification output
capabilities of about 25 W with 10 mW input. The output
from IC4 (pin 4) is passed through the antenna switching
circuit (D1) and is then applied to the antenna connector via
the low-pass filter.
4-1-5 AF AMPLIFIER CIRCUIT
(MAIN AND FRONT UNITS)
The AF amplifier circuit amplifies the detected signals to
drive a speaker. The AF circuit includes an AF mute circuit
for the squelch.
AF signals from IC1 (pin 9) are applied to the de-emphasis
circuit (R61, C89). The de-emphasis circuit is an integrated
circuit with frequency characteristic of –6 dB/octave.
The integrated signals pass through the Band-pass filter (Q6,
Q7, R62–R70, C90–C94) to suppress unwanted lower noise
signals.
The filtered signals are applied to the AF mute circuit (IC7B),
and then passes through the [VOLUME] control (VR board;
R1) via the “VOL1” signal. The signals are applied to the AF
power amplifier (IC6, pin 1). The output signal from IC6 (pin4)
drives the internal (external) speaker.
4-1-6 SQUELCH CIRCUIT
(MAIN UNIT, LOGIC AND SQL BOARDS)
A 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 (IC1, pin 9)
pass through the squelch adjustment volume (SQL board;
R1), and are then applied to the active filter section (IC1,
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 13 as the “SQL” signal.
The “SQL” signal is applied to the CPU (LOGIC board; IC1,
pin 30). The CPU analyzes the noise condition and outputs
the “RMUTE” signal to toggle the AF mute switches (IC7B).
AF
MUTE BPF
IC6 R1
IC7 Q5
External SP
Internal SP
(FRO T unit)
HVS
AF
Amplifier
The detected signal from
the FM IF IC (IC1, pin 9)
de-emphasis
circuit
R61
C89
(VR board)
• AF CIRCUITS
4 - 3
4-3 PLL CIRCUITS
4-3-1 GENERAL (MAIN UNIT)
The PLL circuit provides stable oscillation of the transmit
frequency and receive 1st LO frequency. The PLL circuit
compares the phase of the divided VCO frequency to
the reference frequency. The PLL output frequency is
controlled by a crystal oscillator and the divided ratio of the
programmable divider.
IC8 on the MAIN unit is a dual PLL IC which controls both
VCO circuits for Tx and Rx, and contains a prescaler,
programmable counter, programmable divider, phase
detector, charge pump, etc.
The PLL circuit , using a one chip PLL IC (MAIN unit; IC8),
directly generates the transmit frequency and receive 1st IF
frequency with VCO. The PLL sets the divided ratio based
on serial data from the CPU on the LOGIC BOARD and
compares the phases of VCO signals with the reference
oscillator frequency. The PLL IC detects the out-of-step
phase and output from pins 8 for Tx and Rx. The reference
frequency (21.25 MHz) is oscillated at X2 (MAIN unit).
4-3-2 TX AND RX LOOP (MAIN UNIT)
The generated signal at the VCO (Q13, Q14, D11–
D14) enters the PLL IC (IC8, pin 2) and is divided at the
programmable divider section and is then applied to the
phase detector section.
The phase detector compares the input signal with a
reference frequency, and then outputs the out-of-phase
signal (pulse-type signal) from pin 8.
The pulse-type signal is converted into DC voltage (lock
voltage) at the loop filter (R211–R213, C252, C254), and is
then applied to varactor diodes (D13, D14) of the VCO to
stabilize the oscillated frequency.
4-3-4 VCO CIRCUIT (MAIN UNIT)
The VCO outputs from Q13, Q14 are buffer-amplified at
the buffer amplifiers (Q15 and Q16), and are then sent to
the Tx/Rx switch (D16 and D17). The receive LO signal is
applied to the 1st mixer circuit (Q2) through a low-pass filter,
and the transmit signal is applied to the YGR amplifier (Q17).
A portion of the VCO output is reapplied to the PLL IC (IC8,
pin 2) via the buffer amplifier (Q26).
4-2-5 APC CIRCUIT (MAIN UNIT)
The APC circuit stabilizes transmit output power.
The RF output signal from the power amplifier (IC4) is
detected at the power detector circuit (D21, D22, L31) and
is then applied to one of the differential amplifier inputs (Q21,
pin 3) via the High/Low control circuit (Q22, R137). The
hift register
Prescaler
Phase
detector
Loop
filter
Programmable
counter
Programmable
divider
X2
21.25 MHz
21.25 MHz signal to the
FM IF IC (IC1, pin 2)
VCO
Buffer
Buffer
Buffer
Q16
Q26
Q15
3
4
5
PTB
IC (PLL IC)
PC
PDATA
to transmitter circuit
to 1st mixer circuit
D17
D16
17
16
82
Q13, Q14, D11 D14
T5
D21 D22
L31
TMUT signal from the CPU
(LOGIC board; IC1, pin 51)
HV
5V
1
23
4
H/L
TXD T signal to the CPU
(LOGIC board; IC1, pin 2)
Q23
Q21
Q2
Q22
C177
R13
R138
Q18
YGR
amp.
RF signal
from PLL to the antenna
RF detector
circuit
APC control circuit
Power module
IC4
R133
R136
R135
applied voltage controls the differential amplifier output (Q21,
pin 1) and the bias voltage control (Q23). Thus the APC
circuit maintains a constant output power.
• APC CIRCUIT
• PLL CIRCUITS
4 - 4
4-4 DSC CIRCUITS
4-4-1 DSC ENCODE CIRCUIT
(LOGIC UNIT AND MAIN UNIT)
The DSC signal is created at the CPU (IC1, pin 9). The
signal passes through the buffer amplifier (IC6A, pins 1, 3),
and is then applied to the D/A convertor (R176–R179) to
convert into the analog signal. The analog signal passes
through the low-pass filter (MAIN unit; IC10B, pins 5–7),
and is then applied to the VCO circuit to modulate the DSC
signal.
4-4-2 DSC DECODE CIRCUIT
(MAIN UNIT AND LOGIC UNIT)
The AF signal from the FM IF IC (IC1, pin 9) are filtered at
the low-pass filter (Q5, R52–R58, C83–C86) to suppress
unwanted higher noise signals. The filtered signals are
converted analog signals into digital signals at the DSC
decoder IC (IC3), and are then applied to the CPU (LOGIC
UNIT; IC1, pin 22) via the “DSCDEC” signal.
4-5 LOGIC CIRCUITS (LOGIC UNIT)
• CPU
IC1 is an 8 bit single chip micro-computer and contains LCD
driver, serial I/O, timer, A/D converter, programmable I/O,
ROM and RAM. The CPU controls to display characters on
the LCD too.
• SYSTEM CLOCK CIRCUIT
X1 is a ceramic oscillator and oscillate 7.9872 MHz system
clock for the CPU (IC1).
• RESET CIRCUIT
IC5 which is a reset IC outputs a reset signal (“HIGH”
pulse signal) to the CPU (IC1, pin 33) from pin 1 when the
transceiver turns power ON.
• LOW BATTERY DETECTOR
“HVS” voltage is divided by R14 and R15, and is applied to
the low battery detector section in the CPU (IC1, pin 1).
• DIMMER CIRCUIT
CPU (IC1), Q2, Q3 and Q4 compose dimmer circuit. The
circuit controls 4 steps LCD backlight (DS2–DS7).
• UART PORT
IC-M304 has the UART port which is used for cloning data
and NMEA interface. The signals pass through the photo
coupler circuit (IC2), and are then applied to the buffer
amplifier (IC3, pin 2). The amplified signals are applied to
the CPU (IC1, pin 20).
4-6 POWER SUPPLY CIRCUITS
Line Description
HV/
HVS The voltage from the connected DC power supply.
5V
Common 5V converted from the HV line at the L5V regulator
(LOGIC UNIT; IC9).
The converted voltage is applied to the CPU (LOGIC
UNIT; IC1)
T5 Transmit 5V controlled by the T5 control circuit (Q31, Q32)
using the "SEND" signal from CPU (LOGIC UNIT; IC1, pin 52).
R8
Receive 8 V converted from the VCC line at the R8 regulator
(Q35, Q36).
The converted voltage is applied to the receiver circuits.
R5
Receive 5V controlled by the R5 control circuit (Q33, Q34)
using the "RCV" signal from CPU (LOGIC UNIT; IC1,
pin 53).
The controlled voltage is applied to the receiver circuits.
4 - 5
4-7 CPU PORT ALLOCATIONS
Pin
NO. Port name Description
2 KEYM
Input port for keys on HM-150B/SW.
Approx. 2.02 V: [Y] key is pushed.
Approx. 3.00 V: [Z] key is pushed.
Approx. 3.84 V: [H/L] key is pushed.
3 TXDET Input port for transmit detected voltage.
4 LBAT Input port for low battery detecting.
5 SQL Input port for "NOISE" signal from the squelch
amplifier (IC11, pin 4).
6 SQLV Input port for squelch adjustment pot (SQL
BOARD; R1).
7 WXDEC Input port for weather alert signal from the
LPF (Q38).
8 PDATA Outputs data signal to the PLL IC (IC1, pin 5).
9 PCK Outputs clock signal to the PLL IC (IC1, pin 4).
10 PSTB Outputs strobe signal to the PLL IC (IC1, pin3).
12 EVDATA Outputs volume control signal to the volume
ccontroller (IC13, pin 5) for PA circuit.
13 EVCK Outputs clock signal to the volume ccontroller
(IC13, pin 4) for PA circuit.
14 DSDEC Input port for the DSC decode signal from the
DSC decoder (IC15, pin 7).
28,
29
CONT1,
CONT0
Output LCD contrast adjust signal to the CPU
(IC1, pin 134).
32 COMTXD Outputs serial data signal to the connected
HM-157 (Optional product).
33 COMRXD Input port for the serial data signal from the
connected HM-157 (Optional product).
34 ECK Outputs clock signal to the EEPROM (LOGIC
BOARD; IC4, pin 6).
35 EDATA I/O port for the EEPROM (LOGIC BOARD;
IC4, pin 5) control data.
37 NMTXD Outputs NMEA command signal.
38 NMRXD Input port for the NMEA signal.
48 PWR Input port for power switch (VR BOARD; R1).
Low: When [VOL] is pushed.
49 PAMUTE
Outputs control signal to the AF (Public Ad-
dress) mute circuit (Q65).
High: During mute.
50 PWRON
Outputs power control signal to the power
control circuit (Q61, Q62).
High: While the transceiver is switched ON.
51 TMUTE
Outputs transmit mute signal to the APC circuit
(IC12, pin 3).
High: During mute.
53 RCV
Outputs control signal to the R5 control circuit
(Q53, Q54).
High: While receiving.
54 H/L
Outputs TX power control signal to the TX
power control circuit (Q17, D11).
High: 25 W
Low: 1 W
55 ATT
Outputs attenuator control signal to the
attenuator (D22).
High: Attenuator ON.
57 PTT Input port for the [PTT] switch (HM-150B/SW; S1).
Low: [PTT] key is pushed.
60 UNLK
Input port for the "UNLK" signal from the PLL
IC (IC1, pin7).
High: PLL circuit is unlocked.
Pin
NO. Port name Description
61 DTRS
Input port for the [DISTRESS] key (LOGIC
BOARD; S9).
Low: [DISTRESS] key is pushed.
62 RMUTEP
Outputs AF (Public Address) mute signal to
the AF mute circuit (IC4, pin12).
Low: During mute.
63 RMUTES
Outputs AF mute signal to the AF mute circuit
(IC4, pin 5) for the connected HM-157 (Op-
tional product).
Low: During mute.
64 RMUTEM
Outputs AF (internal speaker) mute signal to the
AF mute circuit (IC4, pin 6).
Low: During mute.
65 MMUTEP
Outputs microphone (Public Address) mute
signal to the AF mute circuit (IC5, pin 6).
Low: During mute.
66 MMUTES
Outputs microphone mute signal to the AF
mute circuit (IC5, pin 5) for the connected
HM-157 (Optional product).
Low: During mute.
67 MMUTEM
Outputs microphone (HM-150B/SW) mute sig-
nal to the AF mute circuit (IC5, pin 13).
Low: During mute.
68 PTTS
Outputs AF/MIC control signal to the AF mute
circuit (IC6, pin 5).
High: PTT switch (HM-157) is pushed
69 PTTM Outputs AF/MIC control signal to the AF mute
circuit (IC5, pin 12).
70 LO/DX
Input port for the [LO/DX] key (LOGIC
BOARD; S8).
Low: [LO/DX] key is pushed.
71 DSC Input port for the [DSC] key (LOGIC BOARD; S7).
Low: [DSC] key is pushed.
72 PA Input port for the [PA] key (LOGIC BOARD; S6).
Low: [PA] key is pushed.
73 CH/WX
Input port for the [CH/WX] key (LOGIC
BOARD; S5).
Low: [CH/WX] key is pushed.
74 SCAN Input port for the [SCAN] key (LOGIC BOARD; S4).
Low: [SCAN] key is pushed.
75 CH16 Input port for the [16] key (LOGIC BOARD; S3).
Low: [16] key is pushed.
76 DOWN Input port for the [Z] key (LOGIC BOARD; S2).
Low: [Z] key is pushed.
77 UP Input port for the [Y] key (LOGIC BOARD; S1).
Low: [Y] key is pushed.
138 DIM Outputs dimmer control signal to the LCD control
circuit (LOGIC BOARD; Q2, Q3).
139 BEEP Outputs beep signal to the AF amplifier (IC9, pin 1).
141 DS/BPF
• While transmitting:
Outputs DSC encode signal as "DSENC"
to the LPF (IC8, pin 5) via the buffer amplifier
(LOGIC BOARD; IC5, pins 1, 3).
• While receiving:
Outputs tuning signal as "BPFV" to the
tunable BPFs (D25–D28) via buffer amplifier
(LOGIC BOARD; IC5, pins 5, 7).
5 - 1
SECTION 5 ADJUSTMENT PROCEDURE
¤ REQUIRED TEST EQUIPMENTS
EQUIPMENT GRADE AND RANGE EQUIPMENT GRADE AND RANGE
DC power supply Output voltage : 13.8 V DC
Current capacity : More than 10 A DC voltmeter Input impedance : 50 kΩ/V DC or more
RF power meter
(terminated type)
Measuring range : 0.1–30 W
Frequency range : 100–300 MHz
Impedance : 50 Ω
SWR : Less than 1.2 : 1
Standard signal
generator (SSG)
Frequency range : 0.1–300 MHz
Output level : 0.1 µV to 32 mV
(–127 to –17 dBm)
Frequency counter
Frequency range : 0.1–300 MHz
Frequency accuracy: ±1 ppm or better
Sensitivity : 100 mV or better
AC millivoltmeter Measuring range : 10 mV to 10 V
FM deviation meter Frequency range : 30–300 MHz
Measuring range : 0 to ±10 kHz External speaker Input impedance : 4 Ω
Capacity : More than 5 W
Audio generator Frequency range : 300–3000 Hz
Output level : 1–500 mV Attenuator Power attenuation : 40 dB
Capacity : More than 30 W
5-1 PREPARATION
¤ CONNECTIONS
FM
IC-M304
deviation meter
to the antenna connector
Attenuator
40 dB
Power supply
13.8 V/10 A
SINAD meter
Blue: Speaker (+)
Speaker (4 Ω)
Gray: Speaker (−)
RF power meter
0.1–30 W/50
Frequency
counter
Standard signal generator
0.1 µV to 32 mV
(–127 dBm to –17 dBm)
CAUTION!
DO NOT transmit while
the SSG is connected to
the antenna connector
Red: Positive (+)
Black: Negative (−)
+
−
+
−
5 - 2
5-2 FREQUENCY ADJUSTMENT
ADJUSTMENT ADJUSTMENT
CONDITION OPERATION VALUE
LOCK
VOLTAGE
(Verify)
1 • Channel : CH16 (156.800 MHz)
• Receiving
Connect a DC voltmeter to the check point ‘LV.’ 1.3–2.3 V
(Verify)
2 • Channel : CH16 (156.800 MHz)
• Output power : Low
• Connect a power meter to the ant-
enna connector.
•Transmitting
1.4–2.4 V
(Verify)
REFERENCE
FREQUENCY
1 • Channel : CH16 (156.800 MHz)
• Output power : Low
• Connect a power meter to the ant-
enna connector.
• Transmitting
1) Loosely couple a frequency counter to the ant-
enna connector.
2) Adjust C257 (REF).
156.800 MHz
• ADJUST&CHECK POINTS LOCATION (FREQUENCY)
“LV”
LOCK VOLTAGE
CHECK POINT
C57 (REF)
RECEIVE SENSITIVITY
ADJUSTMENT POINT
5 - 3
5-3 TRANSMIT ADJUSTMENT
ADJUSTMENT ADJUSTMENT CONDITION OPERATION VALUE
TRANSMIT
OUTPUT
POWER
1 • Channel : CH16 (156.800 MHz)
• Output power : High
• Connect an RF power meter to the ant-
enna connector.
• Transmitting
Adjust R135 (PWR). 23.5 W
DEVIATION 1 • Channel : CH16 (156.800 MHz)
• Output power : Low
• Connect an audio generator to the ‘MIC’
line (see the picture below), and set as;
Frequency : 1 kHz
Level : 140 mV
• Connect an FM deviation meter to the ant-
enna connector through an attenuator,
and set as ;
HPF : OFF
LPF : 20 kHz
De-emphasis : OFF
Detector : (P–P)/2
• Transmitting
Adjust R184 (DEV). ±4.3 kHz
• ADJUST&CHECK POINTS LOCATION (TRANSMIT)
KEYM
GND
MIC
MICG
PTT
15
+
–
–
+
AC millivoltmeter
Audio generator [PTT]
J2
R135 (PWR)
TRANSMIT OUTPUT POWER
ADJUSTMENT POINT
R184 (DEV)
DEVIATION
ADJUSTMENT POINT
5 - 4
5-4 RECEIVE ADJUSTMENT
ADJUSTMENT ADJUSTMENT CONDITION CONNECTION VALUE
RECEIVE
SENSITIVITY
1 • Channel : CH16 (156.800 MHz)
• [SQUELCH] : Open
(Max. counterclockwise)
• Connect an external speaker to the [EXT SP]
lead receptacle.
• Connect an SSG to the antenna connector
and set as;
Frequency : 156.800 MHz
Level : 0 dBu†(−107 dBm)
Modulation : 1 kHz
Deviation : ±3.0 kHz
• Receiving
1) Connect a DC voltmeter
to the check
point ‘RSSI.’
2) Adjust in sequence L6, L7, L8 and L9.
(Repeate the adjustment at least
twice.)
Maximum
voltage
• ADJUST&CHECK POINTS LOCATION (RECEIVE)
L6
L7
L8
L9
“RSSI”
RECEIVE SENSITIVITY
CHECK POINT
RECEIVE SENSITIVITY
ADJUSTMENT POINTS
†; The output level of the standard signal generator (SSG) is indicated as the SSG’s open circuit.
6 - 1
SECTION 6 PARTS LIST
M.=Mounted side (T: Mounted on the Top side, B: Mounted on the Bottom side)
[LOGIC UNIT]
REF ORDER DESCRIPTION M. H/V
NO. NO.
LOCATION
IC1 1140013950 S.IC M37560MFA-347GP B 53/33
IC2 1170000352 S.IC PC357N6J000F B 13.4/19.7
IC3 1130007431 S.IC TC7S14FU (TE85R,F) B 13.7/25.2
IC4 1140008650 S.IC HN58X2464TI B 29.2/35.7
IC5 1110005771 S.IC S-80942CNMC-G9CT2G B 30.2/42.1
IC6 1110002700 S.IC NJM2904M-TE1-#FMZB B 29.3/9.2
Q2 1520000840 S.TR KTA1664Y-RTF/P B 73.5/11.6
Q3 1530003900 S.TR KTC4075 BL-RTK/P B 68.5/6.8
Q4 1530003900 S.TR KTC4075 BL-RTK/P B 68.2/9.7
Q6 1590001050 S.TR DTC114TUA T106 B 18/19
D1 1750000550 S.DIO 1SS355 TE-17 B 16/15.4
D2 1750000550 S.DIO 1SS355 TE-17 B 18/22.8
D3 1750001180 S.DIO KDS122 RTK/P B 20.9/18.3
X1 6050012460 S.XTL CR-834 (SMD-49/7.9872 MHz)
R1 7030003530 S.RES ERJ3GEYJ 562 V (5.6 k) B 63.4/22.9
R3 7030003560 S.RES ERJ3GEYJ 103 V (10 k) B 60.6/22.9
R4 7030003560 S.RES ERJ3GEYJ 103 V (10 k) B 60.6/21.6
R5 7030003560 S.RES ERJ3GEYJ 103 V (10 k) B 63.4/21.6
R14 7030003700 S.RES ERJ3GEYJ 154 V (150 k) B 61.4/11.9
R15 7030003640 S.RES ERJ3GEYJ 473 V (47 k) B 61.4/13.2
R16 7030003560 S.RES ERJ3GEYJ 103 V (10 k) B 49.9/16.1
R21 7030003250 S.RES ERJ3GEYJ 270 V (27) B 65.5/9.4
R22 7030003250 S.RES ERJ3GEYJ 270 V (27) B 65.5/10.7
R23 7030003250 S.RES ERJ3GEYJ 270 V (27) B 65.5/12
R24 7030003630 S.RES ERJ3GEYJ 393 V (39 k) B 65.5/6.8
R25 7030003640 S.RES ERJ3GEYJ 473 V (47 k) B 65.5/5.5
R26 7030003440 S.RES ERJ3GEYJ 102 V (1 k) B 65.5/8.1
R27 7030003570 S.RES ERJ3GEYJ 123 V (12 k) B 70.2/9.8
R28 7030003500 S.RES ERJ3GEYJ 332 V (3.3 k) B 67.5/12.6
R29 7030003440 S.RES ERJ3GEYJ 102 V (1 k) B 15.9/42.6
R30 7030003440 S.RES ERJ3GEYJ 102 V (1 k) B 38.8/7.3
R31 7030003390 S.RES ERJ3GEYJ 391 V (390) B 77.9/23.4
R35 7030003360 S.RES ERJ3GEYJ 221 V (220) B 17.7/13.3
R36 7030003540 S.RES ERJ3GEYJ 682 V (6.8 k) B 10.8/23.7
R37 7030003580 S.RES ERJ3GEYJ 153 V (15 k) B 18/21.2
R38 7030003440 S.RES ERJ3GEYJ 102 V (1 k) B 21.3/20.5
R40 7030003340 S.RES ERJ3GEYJ 151 V (150) B 28/30.4
R41 7030003560 S.RES ERJ3GEYJ 103 V (10 k) B 29.6/30.4
R42 7030003560 S.RES ERJ3GEYJ 103 V (10 k) B 31/30.4
R43 7030003560 S.RES ERJ3GEYJ 103 V (10 k) B 27.8/42.1
R51 7030003680 S.RES ERJ3GEYJ 104 V (100 k) B 32.2/13.3
R52 7030003800 S.RES ERJ3GEYJ 105 V (1 M) B 30.9/13.3
R53 7030003560 S.RES ERJ3GEYJ 103 V (10 k) B 34.3/12.1
R54 7030003540 S.RES ERJ3GEYJ 682 V (6.8 k) B 34.3/9.3
R55 7030003560 S.RES ERJ3GEYJ 103 V (10 k) B 35.6/7.8
R56 7030003560 S.RES ERJ3GEYJ 103 V (10 k) B 36.4/10
R61 7030003680 S.RES ERJ3GEYJ 104 V (100 k) B 31.7/25.7
R62 7030003560 S.RES ERJ3GEYJ 103 V (10 k) B 33/25.7
R63 7030003560 S.RES ERJ3GEYJ 103 V (10 k) B 40.4/36.5
R64 7030003560 S.RES ERJ3GEYJ 103 V (10 k) B 41.8/37.7
R65 7030003800 S.RES ERJ3GEYJ 105 V (1 M) B 40.4/39.3
R67 7030003860 S.RES ERJ3GE JPW V B 28.9/5.3
C1 4030006900 S.CER C1608 JB 1H 103K-T B 60.8/4.4
C2 4030006850 S.CER C1608 JB 1H 471K-T B 62.1/4.4
C3 4030006900 S.CER C1608 JB 1H 103K-T B 49.9/13.5
C4 4030006850 S.CER C1608 JB 1H 471K-T B 49.9/14.8
C5 4030006900 S.CER C1608 JB 1H 103K-T B 66.8/26.4
C6 4030011600 S.CER C1608 JB 1E 104K-T B 16.1/20.3
C7 4030006900 S.CER C1608 JB 1H 103K-T B 61.4/10.3
C11 4030006900 S.CER C1608 JB 1H 103K-T B 67/22.9
C12 4030006860 S.CER C1608 JB 1H 102K-T B 63.5/12.5
C13 4030006900 S.CER C1608 JB 1H 103K-T B 65.5/13.3
C14 4030006860 S.CER C1608 JB 1H 102K-T B 70.2/12.6
C16 4030006880 S.CER C1608 JB 1H 472K-T B 17.9/15.7
C17 4030006900 S.CER C1608 JB 1H 103K-T B 16.8/24.4
C18 4030006900 S.CER C1608 JB 1H 103K-T B 26.6/28.9
C21 4030017480 S.CER C1608 JB 1A 474K-T B 26.5/42.1
C22 4510008570 S.ELE EEE1CA220SR B 23.5/32.7
C23 4030008890 S.CER C1608 JB 1H 273K-T B 30/44.5
C25 4030006900 S.CER C1608 JB 1H 103K-T B 25.2/42.1
C26 4030006860 S.CER C1608 JB 1H 102K-T B 29/14
C31 4030009650 S.CER C1608 CH 1H 240J-T B 43.5/40.1
C32 4030007050 S.CER C1608 CH 1H 220J-T B 42.1/41.1
C41 4030006850 S.CER C1608 JB 1H 471K-T B 9/6.9
S.=Surface mount
[LOGIC UNIT]
REF ORDER DESCRIPTION M. H/V
NO. NO.
LOCATION
C42 4030006850 S.CER C1608 JB 1H 471K-T B 9/38.2
C43 4030006860 S.CER C1608 JB 1H 102K-T B 41.8/13.3
C44 4030006850 S.CER C1608 JB 1H 471K-T B 51.7/12.1
J1 6510021721 S.CNR 30FLT-SM2-TB (LF) (SN) B 48.3/8.2
J2 6510015541 S.CNR B4B-ZR-SM4-TF (LF) (SN) B 18.5/5.8
DS1 5030002990 LCD SDT-DM2360-HP-0
DS2 5040002310 S.LED SML-311YTT86 T 13.5/13.7
DS3 5040002310 S.LED SML-311YTT86 T 13.5/39.5
DS4 5040002310 S.LED SML-311YTT86 T 75.7/11.5
DS5 5040002310 S.LED SML-311YTT86 T 42.8/7.3
DS6 5040003230 S.LED RY-SP110UHY24-5M T 79.8/42.5
DS7 5040003230 S.LED RY-SP110UHY24-5M T 79.8/27
EP2 8930054970 LCT SRCN-2438-SP-N-W
[MAIN UNIT]
REF ORDER DESCRIPTION M. H/V
NO. NO.
LOCATION
IC1 1110003491 S.IC TA31136FNG (D,EL) T 50.2/15.6
IC3 1110003650 S.IC NJM2211M-TE1 T 26.8/44.1
IC4 1150002172 IC S-AV35A (I,Q)
IC6 1110003091 IC LA4425A-E
IC7 1130009581 S.IC TC7W66FU (TE12L,F) T 6.7/27.6
IC8 1130007611 S.IC uPD3140GS-E1-A T 58/31.7
IC9 1180002780 REG KIA7805API U/P
IC10 1110000960 S.IC NJM4558M-TE1 T 19.3/27.3
Q1 1580000540 S.FET 3SK131-T2-LA T 100.4/35
Q2 1580000540 S.FET 3SK131-T2-LA T 82.4/12.9
Q4 1530003950 S.TR KTC4080 Y-RTK/P T 59.6/15.4
Q5 1530003900 S.TR KTC4075 BL-RTK/P T 37.9/40.2
Q6 1530003900 S.TR KTC4075 BL-RTK/P T 4.1/38.1
Q7 1530003900 S.TR KTC4075 BL-RTK/P T 5.1/32.7
Q11 1530003900 S.TR KTC4075 BL-RTK/P T 85.8/28.2
Q12 1590003580 S.TR KRC404 RTK/P T 66.4/31.9
Q13 1530002920 S.TR 2SC4226-T1 R25 T 72.2/37.4
Q14 1530002920 S.TR 2SC4226-T1 R25 T 72.4/31.6
Q15 1530002601 S.TR 2SC4215-O (TE85R,F) T 82/38.1
Q16 1530002601 S.TR 2SC4215-O (TE85R,F) T 84.6/36.4
Q17 1530002920 S.TR 2SC4226-T1 R25 T 47.3/61.3
Q19 1590003580 S.TR KRC404 RTK/P T 54.5/60.4
Q20 1590003580 S.TR KRC404 RTK/P T 55.2/57
Q21 1590000670 S.TR FMW1 T148 T 60.4/63.1
Q22 1590003680 S.TR KRC402 RTK/P T 61.3/55.4
Q23 1510001090 S.TR KTA2015Y-RTK/P T 55.5/66.3
Q25 1590003580 S.TR KRC404 RTK/P T 32.9/26.1
Q26 1530003950 S.TR KTC4080 Y-RTK/P T 81.7/33.3
Q31 1510001090 S.TR KTA2015Y-RTK/P T 28.1/65.9
Q32 1590003580 S.TR KRC404 RTK/P T 30/60.5
Q33 1510001090 S.TR KTA2015Y-RTK/P T 20/57
Q34 1590003580 S.TR KRC404 RTK/P T 19.8/51.6
Q35 1520000840 S.TR KTA1664Y-RTF/P T 4.6/49.4
Q36 1530003900 S.TR KTC4075 BL-RTK/P T 6.1/45.5
D1 1710001081 DIO L308CCB
D2 1710001081 DIO L308CCB
D4 1750001190 S.VCP KDV214E RTK/P T 107.2/39.4
D5 1750001190 S.VCP KDV214E RTK/P T 99.9/29.3
D6 1750001190 S.VCP KDV214E RTK/P T 102.5/12
D7 1750001190 S.VCP KDV214E RTK/P T 99.1/12
D8 1790000980 S.DIO MA742 (TX) T 63.9/15.5
D9 1750000471 S.DIO 1SS321 (TE85L,F) T 53/20.1
D11 1790001260 S.DIO MA2S077-(TX) T 66.1/34.1
D12 1790001260 S.DIO MA2S077-(TX) T 73.3/26.8
D13 1750000711 S.VCP HVC350BTRF-E T 76.8/33.5
D14 1750000711 S.VCP HVC350BTRF-E T 75.5/33.5
D16 1790001260 S.DIO MA2S077-(TX) T 92.1/37.1
D17 1790001260 S.DIO MA2S077-(TX) T 92.1/40.6
D21 1790000691 S.DIO HSM88ASRTR-E T 69.3/57.2
D22 1790000691 S.DIO HSM88ASRTR-E T 73.5/57.2
D25 1790000700 DIO DSA3A1
D26 1750001180 S.DIO KDS122 RTK/P T 32.2/34
FI1 2030000350 MLH FL-368 (21.7 MHz)
FI2 2030000481 MLH FL-399A (21.7 MHz)
FI3 2020002250 CER LT450EW
X1 6070000290 DCR JTB450C24
X2 6050012121 S.XTL CR-804A (21.250 MHz) T 54.5/41.3
L1 6110001600 COL LA-243
L2 6110001600 COL LA-243
[REPLACEMENT UNITS]
ORDER NO. UNIT NAME
0329890101
0329890201
0329890301
0329890102
U M304 #01 FRONT (FRONT+LOGIC+VR+SQL) [Black]
U M304 #02 FRONT (FRONT+LOGIC+VR+SQL)
[Super White]
U M304 #03 FRONT (FRONT+LOGIC+VR+SQL) [Gray]
U M304 #01 MAIN (MAIN+CHASSIS)
6 - 2
M.=Mounted side (T: Mounted on the Top side, B: Mounted on the Bottom side)
[MAIN UNIT]
REF ORDER DESCRIPTION M. H/V
NO. NO.
LOCATION
L3 6110001600 COL LA-243
L6 6150003821 COL LS-440-LF
L7 6150003821 COL LS-440-LF
L8 6150003821 COL LS-440-LF
L9 6150003821 COL LS-440-LF
L10 6200010090 S.COL ELJND R82JF T 79.5/15.5
L12 6200009560 S.COL MLG1608B R10J-T T 93.5/25.3
L13 6200009560 S.COL MLG1608B R10J-T T 93.5/28.9
L21 6200003711 S.COL NLV25T-2R7J T 75.7/26
L22 6200012510 S.COL 0.25-1.9-8TL 72.0N T 77.2/30.7
L23 6200009560 S.COL MLG1608B R10J-T T 80.6/36.2
L26 6200009560 S.COL MLG1608B R10J-T T 86.5/34.8
L28 6200009560 S.COL MLG1608B R10J-T T 45.7/64
L29 6200009680 S.COL MLG1608B 47NJ-T T 44.4/68
L31 6110001670 COL LA-253
L32 6170000230 COL LW-25
L35 6200009560 S.COL MLG1608B R10J-T T 81.6/31.2
L36 6200009620 S.COL MLG1608B 68NJ-T T 80.8/27.4
R4 7030003680 S.RES ERJ3GEYJ 104 V (100 k) T 100.3/42.4
R5 7030003630 S.RES ERJ3GEYJ 393 V (39 k) T 100.3/37.4
R6 7030003640 S.RES ERJ3GEYJ 473 V (47 k) T 98/37.1
R7 7030003410 S.RES ERJ3GEYJ 561 V (560) T 107/34.7
R8 7030004050 S.RES ERJ3GEYJ 1R0 V (1) T 100.8/32.3
R9 7030003680 S.RES ERJ3GEYJ 104 V (100 k) T 103.5/36.2
R10 7030003260 S.RES ERJ3GEYJ 330 V (33) T 106.2/36.8
R12 7030003680 S.RES ERJ3GEYJ 104 V (100 k) T 97.4/27.6
R14 7030003680 S.RES ERJ3GEYJ 104 V (100 k) T 102.8/14.2
R16 7030003680 S.RES ERJ3GEYJ 104 V (100 k) T 100.8/14.2
R17 7030003860 S.RES ERJ3GE JPW V T 61.9/20.6
R21 7030003320 S.RES ERJ3GEYJ 101 V (100) T 100.3/40.3
R25 7030003820 S.RES ERJ3GEYJ 155 V (1.5 M) T 85.8/14.5
R26 7030003640 S.RES ERJ3GEYJ 473 V (47 k) T 86.6/13.2
R27 7030003600 S.RES ERJ3GEYJ 223 V (22 k) T 83.8/16.1
R28 7030003560 S.RES ERJ3GEYJ 103 V (10 k) T 86.6/19.4
R31 7030003200 S.RES ERJ3GEYJ 100 V (10) T 83.7/18.1
R32 7030003540 S.RES ERJ3GEYJ 682 V (6.8 k) T 75.3/15.3
R33 7030003450 S.RES ERJ3GEYJ 122 V (1.2 k) T 79.2/12
R34 7030003450 S.RES ERJ3GEYJ 122 V (1.2 k) T 57.7/12.7
R35 7030003680 S.RES ERJ3GEYJ 104 V (100 k) T 60/18.2
R36 7030003460 S.RES ERJ3GEYJ 152 V (1.5 k) T 63.9/19
R37 7030003400 S.RES ERJ3GEYJ 471 V (470) T 58.7/18.2
R38 7030003480 S.RES ERJ3GEYJ 222 V (2.2 k) T 93.7/36.1
R39 7030003400 S.RES ERJ3GEYJ 471 V (470) T 93.7/33.3
R41 7030003660 S.RES ERJ3GEYJ 683 V (68 k) T 50.7/19.8
R42 7030003400 S.RES ERJ3GEYJ 471 V (470) T 45.3/8.9
R43 7030003460 S.RES ERJ3GEYJ 152 V (1.5 k) T 55.1/10.5
R44 7030003390 S.RES ERJ3GEYJ 391 V (390) T 49.4/21.3
R45 7030003560 S.RES ERJ3GEYJ 103 V (10 k) T 9.1/42.8
R46 7030003450 S.RES ERJ3GEYJ 122 V (1.2 k) T 10/39.5
R47 7510001671 S.TMR NTCG16 4BH 103JT T 37.5/8.9
R48 7030003640 S.RES ERJ3GEYJ 473 V (47 k) T 40.3/10.3
R49 7030003440 S.RES ERJ3GEYJ 102 V (1 k) T 40.3/8.9
R50 7030003730 S.RES ERJ3GEYJ 274 V (270 k) T 44.8/12.5
R51 7030003460 S.RES ERJ3GEYJ 152 V (1.5 k) T 48.7/19.1
R52 7030003590 S.RES ERJ3GEYJ 183 V (18 k) T 36.6/38
R53 7030003620 S.RES ERJ3GEYJ 333 V (33 k) T 34.5/37.3
R54 7030003560 S.RES ERJ3GEYJ 103 V (10 k) T 38.7/38.1
R55 7030003560 S.RES ERJ3GEYJ 103 V (10 k) T 40.8/43.2
R56 7030003560 S.RES ERJ3GEYJ 103 V (10 k) T 39.5/43.2
R57 7030003440 S.RES ERJ3GEYJ 102 V (1 k) T 35.6/43.2
R58 7030003560 S.RES ERJ3GEYJ 103 V (10 k) T 35.2/41.2
R61 7030003600 S.RES ERJ3GEYJ 223 V (22 k) T 12/35.6
R62 7030003580 S.RES ERJ3GEYJ 153 V (15 k) T 7.3/38.6
R63 7030003400 S.RES ERJ3GEYJ 471 V (470) T 7.5/42.8
R64 7030003760 S.RES ERJ3GEYJ 474 V (470 k) T 6.6/35.3
R65 7030003720 S.RES ERJ3GEYJ 224 V (220 k) T 8/35.3
R66 7030003490 S.RES ERJ3GEYJ 272 V (2.7 k) T 4/36.1
R67 7030003390 S.RES ERJ3GEYJ 391 V (390) T 7.3/39.9
R68 7030003620 S.RES ERJ3GEYJ 333 V (33 k) T 4/34.8
R69 7030003620 S.RES ERJ3GEYJ 333 V (33 k) T 3.2/32.5
R70 7030003480 S.RES ERJ3GEYJ 222 V (2.2 k) T 8.3/32.5
R71 7030003280 S.RES ERJ3GEYJ 470 V (47) T 33.7/38.9
R72 7030003760 S.RES ERJ3GEYJ 474 V (470 k) T 33/43.2
R73 7030003640 S.RES ERJ3GEYJ 473 V (47 k) T 39.3/36.8
R74 7030003680 S.RES ERJ3GEYJ 104 V (100 k) T 21.9/46.1
R75 7030003630 S.RES ERJ3GEYJ 393 V (39 k) T 21.9/43.3
R76 7030003580 S.RES ERJ3GEYJ 153 V (15 k) T 19.9/42.5
R77 7030003860 S.RES ERJ3GE JPW V T 40.1/34.9
R78 7030003480 S.RES ERJ3GEYJ 222 V (2.2 k) T 19.1/44.7
R81 7030003440 S.RES ERJ3GEYJ 102 V (1 k) T 85.8/30.2
R82 7030003440 S.RES ERJ3GEYJ 102 V (1 k) T 85.7/26.3
R83 7030003410 S.RES ERJ3GEYJ 561 V (560) T 73.1/24.3
R84 7030003640 S.RES ERJ3GEYJ 473 V (47 k) T 75.7/23.7
R85 7030003440 S.RES ERJ3GEYJ 102 V (1 k) T 73.1/25.5
R86 7030003320 S.RES ERJ3GEYJ 101 V (100) T 67.1/28.9
R87 7030003620 S.RES ERJ3GEYJ 333 V (33 k) T 62.3/41
R88 7030003600 S.RES ERJ3GEYJ 223 V (22 k) T 62.3/38.2
R89 7030003680 S.RES ERJ3GEYJ 104 V (100 k) T 65.6/38.8
R90 7030003550 S.RES ERJ3GEYJ 822 V (8.2 k) T 65.6/40.1
R91 7030003320 S.RES ERJ3GEYJ 101 V (100) T 75.3/39.6
R92 7030003390 S.RES ERJ3GEYJ 391 V (390) T 72.4/39.6
R93 7030003550 S.RES ERJ3GEYJ 822 V (8.2 k) T 74.8/36.4
R94 7030003350 S.RES ERJ3GEYJ 181 V (180) T 73.1/35.1
R95 7030003550 S.RES ERJ3GEYJ 822 V (8.2 k) T 72.2/29.7
R96 7030003420 S.RES ERJ3GEYJ 681 V (680) T 77.4/38.5
R97 7030003660 S.RES ERJ3GEYJ 683 V (68 k) T 78.7/38.5
R102 7030003320 S.RES ERJ3GEYJ 101 V (100) T 86.5/32.2
R103 7030003610 S.RES ERJ3GEYJ 273 V (27 k) T 84.6/39.4
R106 7030003440 S.RES ERJ3GEYJ 102 V (1 k) T 93.7/39.1
R108 7030003480 S.RES ERJ3GEYJ 222 V (2.2 k) T 53.1/63
R109 7030003390 S.RES ERJ3GEYJ 391 V (390) T 92.9/44.3
R110 7030003200 S.RES ERJ3GEYJ 100 V (10) T 48.8/67.4
S.=Surface mount
[MAIN UNIT]
REF ORDER DESCRIPTION M. H/V
NO. NO.
LOCATION
R111 7030003560 S.RES ERJ3GEYJ 103 V (10 k) T 47/64
R112 7030003580 S.RES ERJ3GEYJ 153 V (15 k) T 49.6/60.2
R113 7030003370 S.RES ERJ3GEYJ 271 V (270) T 50.9/64
R126 7030003680 S.RES ERJ3GEYJ 104 V (100 k) T 57.8/66.4
R127 7030003480 S.RES ERJ3GEYJ 222 V (2.2 k) T 57.2/68.6
R128 7030003370 S.RES ERJ3GEYJ 271 V (270) T 55.1/68.8
R129 7030003360 S.RES ERJ3GEYJ 221 V (220) T 53.8/68.8
R130 7030001110 S.RES MCR50JZHJ 68 (680) T 80.4/55.8
R134 7030003680 S.RES ERJ3GEYJ 104 V (100 k) T 68.8/54.2
R135 7310005270 S.TRI RH03ADCJ2X (220) T 65/58.7
R136 7030003520 S.RES ERJ3GEYJ 472 V (4.7 k) T 63.2/55.4
R137 7030003310 S.RES ERJ3GEYJ 820 V (82) T 61.5/58.3
R138 7030003560 S.RES ERJ3GEYJ 103 V (10 k) T 63.5/61.7
R139 7030003480 S.RES ERJ3GEYJ 222 V (2.2 k) T 63.5/63
R140 7030003560 S.RES ERJ3GEYJ 103 V (10 k) T 59.4/60.3
R141 7030003560 S.RES ERJ3GEYJ 103 V (10 k) T 58/63.6
R144 7030003500 S.RES ERJ3GEYJ 332 V (3.3 k) T 58.9/58.3
R145 7030003240 S.RES ERJ3GEYJ 220 V (22) T 57.4/59.6
R146 7030003470 S.RES ERJ3GEYJ 182 V (1.8 k) T 67.2/62.5
R147 7030003470 S.RES ERJ3GEYJ 182 V (1.8 k) T 67.2/61.1
R148 7030003470 S.RES ERJ3GEYJ 182 V (1.8 k) T 75.6/62.5
R149 7030003470 S.RES ERJ3GEYJ 182 V (1.8 k) T 75.6/61.1
R151 7030003320 S.RES ERJ3GEYJ 101 V (100) T 18.5/20.5
R152 7030000100 S.RES MCR10EZHJ 4.7 (4R7) T 16.5/63.9
R153 7030003580 S.RES ERJ3GEYJ 153 V (15 k) T 31.1/31
R154 7030003450 S.RES ERJ3GEYJ 122 V (1.2 k) T 31.1/28
R155 7030003800 S.RES ERJ3GEYJ 105 V (1 M) T 16.7/45.3
R156 7030003600 S.RES ERJ3GEYJ 223 V (22 k) T 5.2/65.6
R157 7030003560 S.RES ERJ3GEYJ 103 V (10 k) T 17.6/48.9
R158 7030004050 S.RES ERJ3GEYJ 1R0 V (1) T 5.2/68.4
R159 7030004050 S.RES ERJ3GEYJ 1R0 V (1) T 3.9/68.4
R161 7030003800 S.RES ERJ3GEYJ 105 V (1 M) T 3.6/26.1
R162 7030003800 S.RES ERJ3GEYJ 105 V (1 M) T 9.9/28.1
R164 7030003800 S.RES ERJ3GEYJ 105 V (1 M) T 7.8/23.2
R165 7030003490 S.RES ERJ3GEYJ 272 V (2.7 k) T 22.5/20.5
R170 7030003640 S.RES ERJ3GEYJ 473 V (47 k) T 13.3/25.8
R171 7030003340 S.RES ERJ3GEYJ 151 V (150) T 17.5/34.6
R172 7030003680 S.RES ERJ3GEYJ 104 V (100 k) T 17.5/33.3
R173 7030003560 S.RES ERJ3GEYJ 103 V (10 k) T 15.5/31.2
R174 7030010310 S.RES ERJ3GEYF 223 V (22 k) T 17.5/30.7
R176 7030010290 S.RES ERJ3GEYF 273 V (27 k) T 24.7/31.3
R177 7030003660 S.RES ERJ3GEYJ 683 V (68 k) T 24.7/30
R178 7030003670 S.RES ERJ3GEYJ 823 V (82 k) T 24.7/27.1
R179 7030003670 S.RES ERJ3GEYJ 823 V (82 k) T 24.7/23.9
R180 7030003610 S.RES ERJ3GEYJ 273 V (27 k) T 24.7/32.6
R181 7510001511 S.TMR NTCG16 4LH 223JT T 26.8/32.2
R182 7030003580 S.RES ERJ3GEYJ 153 V (15 k) T 28.1/32.2
R183 7030003580 S.RES ERJ3GEYJ 153 V (15 k) T 28.1/29.4
R184 7310005030 S.TRI RH03ADCS4X (47 k) T 47.5/39.5
R188 7030003280 S.RES ERJ3GEYJ 470 V (47) T 22.3/32.7
R189 7030003550 S.RES ERJ3GEYJ 822 V (8.2 k) T 20.9/35.9
R190 7030003570 S.RES ERJ3GEYJ 123 V (12 k) T 20.3/34.6
R191 7030003670 S.RES ERJ3GEYJ 823 V (82 k) T 20.3/33.3
R201 7030003400 S.RES ERJ3GEYJ 471 V (470) T 83.2/29.9
R202 7030003660 S.RES ERJ3GEYJ 683 V (68 k) T 83.6/32.6
R203 7030003370 S.RES ERJ3GEYJ 271 V (270) T 80.4/21.1
R204 7030003230 S.RES ERJ3GEYJ 180 V (18) T 77.8/19.8
R205 7030003370 S.RES ERJ3GEYJ 271 V (270) T 76.3/21.1
R206 7030003280 S.RES ERJ3GEYJ 470 V (47) T 75.7/18.3
R210 7030003280 S.RES ERJ3GEYJ 470 V (47) T 50.9/34.9
R211 7030003480 S.RES ERJ3GEYJ 222 V (2.2 k) T 60.4/25.9
R212 7030003200 S.RES ERJ3GEYJ 100 V (10) T 62.5/27.8
R213 7030003480 S.RES ERJ3GEYJ 222 V (2.2 k) T 64.7/27.1
R214 7030003380 S.RES ERJ3GEYJ 331 V (330) T 58.4/25.2
R215 7030003380 S.RES ERJ3GEYJ 331 V (330) T 59.1/37.7
R216 7030003500 S.RES ERJ3GEYJ 332 V (3.3 k) T 53.6/32.7
R221 7030003560 S.RES ERJ3GEYJ 103 V (10 k) T 28.2/63.7
R222 7030003480 S.RES ERJ3GEYJ 222 V (2.2 k) T 28.2/62.4
R223 7030003560 S.RES ERJ3GEYJ 103 V (10 k) T 18.1/56.8
R224 7030003440 S.RES ERJ3GEYJ 102 V (1 k) T 20.6/54.1
R225 7030003510 S.RES ERJ3GEYJ 392 V (3.9 k) T 3.1/46.2
R226 7030003520 S.RES ERJ3GEYJ 472 V (4.7 k) T 3.1/44.9
C3 4010007630 CER HM60SJ CH 270J 500V
C4 4010005420 CER HM60SJ CH 040C 500V
C5 4010008050 CER HM60SJ CH 180J 500V
C6 4010005790 CER RT-HM60SK YB 102K 500V
C7 4010007630 CER HM60SJ CH 270J 500V
C8 4010008070 CER HM60SJ CH 220J 500V
C12 4030006990 S.CER C1608 CH 1H 080D-T T 102.3/49.4
C13 4030007010 S.CER C1608 CH 1H 100D-T T 101.5/47.4
C14 4030009510 S.CER C1608 CH 1H 010B-T T 104.4/38.1
C15 4030006980 S.CER C1608 CH 1H 070D-T T 104.4/39.4
C16 4030009920 S.CER C1608 CH 1H 050B-T T 102.4/38.4
C17 4030011600 S.CER C1608 JB 1E 104K-T T 109.1/35.5
C18 4030006900 S.CER C1608 JB 1H 103K-T T 96.7/34.3
C19 4030006860 S.CER C1608 JB 1H 102K-T T 99.2/43.7
C20 4030006860 S.CER C1608 JB 1H 102K-T T 103.5/34.8
C21 4030011600 S.CER C1608 JB 1E 104K-T T 98/34.3
C22 4030009350 S.CER C1608 CH 1H 3R5B-T T 101.5/27.6
C23 4030006980 S.CER C1608 CH 1H 070D-T T 99.5/26.9
C24 4030009530 S.CER C1608 CH 1H 030B-T T 101.3/24.3
C25 4030009350 S.CER C1608 CH 1H 3R5B-T T 102.8/16.8
C25 4030009910 S.CER C1608 CH 1H 040B-T T 102.8/16.8
C26 4030006980 S.CER C1608 CH 1H 070D-T T 102.8/15.5
C27 4030006860 S.CER C1608 JB 1H 102K-T T 98.3/30.3
C28 4030011600 S.CER C1608 JB 1E 104K-T T 100.5/20.3
C29 4030009500 S.CER C1608 CH 1H 0R5B-T T 100.6/17.9
C30 4030009520 S.CER C1608 CH 1H 020B-T T 97.9/17.1
C31 4030006980 S.CER C1608 CH 1H 070D-T T 99.3/14.3
C32 4030009350 S.CER C1608 CH 1H 3R5B-T T 97.9/14.3
C34 4030009910 S.CER C1608 CH 1H 040B-T T 86.6/11.9
C35 4030006850 S.CER C1608 JB 1H 471K-T T 46.3/25.7
6 - 3
M.=Mounted side (T: Mounted on the Top side, B: Mounted on the Bottom side)
[MAIN UNIT]
REF ORDER DESCRIPTION M. H/V
NO. NO.
LOCATION
C36 4030006860 S.CER C1608 JB 1H 102K-T T 100.3/38.7
C42 4030009350 S.CER C1608 CH 1H 3R5B-T T 91.6/26.5
C44 4030006860 S.CER C1608 JB 1H 102K-T T 92.1/32.1
C46 4030006860 S.CER C1608 JB 1H 102K-T T 86.6/15.8
C47 4030007100 S.CER C1608 CH 1H 560J-T T 77.9/15.3
C48 4030007010 S.CER C1608 CH 1H 100D-T T 76.6/15.3
C49 4030006860 S.CER C1608 JB 1H 102K-T T 82.4/16.1
C50 4030011600 S.CER C1608 JB 1E 104K-T T 81.1/16.1
C52 4030011600 S.CER C1608 JB 1E 104K-T T 70.1/17
C53 4030006900 S.CER C1608 JB 1H 103K-T T 12.4/16.4
C55 4030009920 S.CER C1608 CH 1H 050B-T T 67/10.2
C57 4030006860 S.CER C1608 JB 1H 102K-T T 61.9/15.4
C59 4030006860 S.CER C1608 JB 1H 102K-T T 61.3/18.2
C60 4030006900 S.CER C1608 JB 1H 103K-T T 55.8/18
C61 4030008920 S.CER C1608 JB 1H 473K-T T 55.4/20.2
C62 4030006900 S.CER C1608 JB 1H 103K-T T 69.7/20
C63 4030011600 S.CER C1608 JB 1E 104K-T T 55.1/16
C64 4030006860 S.CER C1608 JB 1H 102K-T T 46.1/10.9
C65 4030006860 S.CER C1608 JB 1H 102K-T T 43.2/9.7
C67 4030007130 S.CER C1608 CH 1H 101J-T T 55.1/13.3
C68 4510008540 S.ELE EEE1CA100SR T 45/21.7
C70 4030006860 S.CER C1608 JB 1H 102K-T T 44.1/17.6
C71 4030006900 S.CER C1608 JB 1H 103K-T T 42.8/17.6
C72 4030011600 S.CER C1608 JB 1E 104K-T T 41.5/17.6
C73 4030007170 S.CER C1608 CH 1H 221J-T T 41.8/11.9
C74 4030007170 S.CER C1608 CH 1H 221J-T T 41.8/13.2
C75 4030011600 S.CER C1608 JB 1E 104K-T T 37.5/10.3
C76 4030011600 S.CER C1608 JB 1E 104K-T T 44.6/14.5
C77 4030006860 S.CER C1608 JB 1H 102K-T T 53.6/29.6
C80 4030006860 S.CER C1608 JB 1H 102K-T T 95.1/33.2
C82 4030011600 S.CER C1608 JB 1E 104K-T T 17.5/37.7
C83 4030009880 S.CER C1608 JB 1H 682K-T T 40.5/41.1
C84 4030008880 S.CER C1608 JB 1H 223K-T T 36.9/43.2
C85 4030006870 S.CER C1608 JB 1H 222K-T T 38.2/43.2
C86 4030009880 S.CER C1608 JB 1H 682K-T T 34.3/43.2
C88 4030011600 S.CER C1608 JB 1E 104K-T T 12.8/37.6
C89 4030011600 S.CER C1608 JB 1E 104K-T T 11.2/32.3
C90 4030008880 S.CER C1608 JB 1H 223K-T T 10.5/34.3
C91 4030008880 S.CER C1608 JB 1H 223K-T T 7.3/37.3
C92 4510008540 S.ELE EEE1CA100SR T 3.3/41.8
C93 4030006870 S.CER C1608 JB 1H 222K-T T 7/32.5
C94 4030010040 S.CER C1608 JB 1H 561K-T T 1.9/32.5
C95 4030017490 S.CER C1608 JB 1A 105K-T T 9.8/31.5
C97 4030006900 S.CER C1608 JB 1H 103K-T T 32.4/41.2
C99 4340000310 S.MLR ECHU 1C 333JX5 T 20.1/40.3
C100 4030011600 S.CER C1608 JB 1E 104K-T T 25.5/50
C101 4030006870 S.CER C1608 JB 1H 222K-T T 20.6/47.5
C102 4030006900 S.CER C1608 JB 1H 103K-T T 20.6/44.7
C103 4030011810 S.CER C1608 JB 1A 224K-T T 31.7/43.2
C104 4510008540 S.ELE EEE1CA100SR T 26.9/36.4
C105 4030011600 S.CER C1608 JB 1E 104K-T T 30.9/38.9
C110 4030006900 S.CER C1608 JB 1H 103K-T T 85/32.6
C111 4550007520 S.TAN F931A106MAABMA T 83.2/26.3
C112 4030017460 S.CER ECJ0EB1E102K T 85.2/25.1
C113 4550000530 S.TAN TEESVA 1V 104M8R T 79.5/24.7
C114 4030017460 S.CER ECJ0EB1E102K T 77.7/26.2
C115 4030017500 S.CER ECJ0EC1H560J T 75.2/28.5
C116 4030017420 S.CER ECJ0EC1H470J T 74.2/28.6
C117 4030006850 S.CER C1608 JB 1H 471K-T T 65.6/37.5
C118 4550007520 S.TAN F931A106MAABMA T 64.7/35.8
C119 4030017460 S.CER ECJ0EB1E102K T 73.2/28.3
C121 4030006860 S.CER C1608 JB 1H 102K-T T 63.6/38.2
C122 4030017490 S.CER C1608 JB 1A 105K-T T 65.6/41.4
C124 4030017460 S.CER ECJ0EB1E102K T 75.4/38.4
C125 4030017550 S.CER ECJ0EC1H1R5B T 75.4/35.3
C126 4030017460 S.CER ECJ0EB1E102K T 71.4/35
C127 4030017550 S.CER ECJ0EC1H1R5B T 74.3/33.3
C128 4030017540 S.CER ECJ0EC1HR75B T 75.4/37.5
C129 4030017460 S.CER ECJ0EB1E102K T 73.3/33.7
C130 4030016790 S.CER ECJ0EB1C103K T 79.9/38
C135 4030017580 S.CER ECJ0EC1H060C T 84.4/38.2
C136 4030017460 S.CER ECJ0EB1E102K T 84.9/34.6
C138 4030017400 S.CER ECJ0EC1H220J T 86.6/37.4
C139 4030006860 S.CER C1608 JB 1H 102K-T T 93.7/42.2
C140 4030007150 S.CER C1608 CH 1H 151J-T T 52/58.2
C145 4030006860 S.CER C1608 JB 1H 102K-T T 50.9/67.2
C146 4030006860 S.CER C1608 JB 1H 102K-T T 48.3/66.1
C147 4030007090 S.CER C1608 CH 1H 470J-T T 48.3/64
C148 4030006860 S.CER C1608 JB 1H 102K-T T 49.6/64
C149 4030007010 S.CER C1608 CH 1H 100D-T T 44.4/64
C151 4030007010 S.CER C1608 CH 1H 100D-T T 45.2/66
C153 4030009920 S.CER C1608 CH 1H 050B-T T 45.5/71.8
C159 4030007130 S.CER C1608 CH 1H 101J-T T 49.9/71.1
C161 4550007090 S.TAN TEESVA 1A 226M8R T 53.9/71.3
C162 4030006850 S.CER C1608 JB 1H 471K-T T 54/73
C164 4030006850 S.CER C1608 JB 1H 471K-T T 65.3/73
C165 4030007130 S.CER C1608 CH 1H 101J-T T 57.8/70.7
C166 4030006860 S.CER C1608 JB 1H 102K-T T 59.1/70.7
C167 4510008570 S.ELE EEE1CA220SR T 62.7/69.3
C171 4010008070 CER HM60SJ CH 220J 500V
C172 4030006860 S.CER C1608 JB 1H 102K-T T 69.3/60.3
C173 4030006860 S.CER C1608 JB 1H 102K-T T 73.5/60.3
C174 4010005430 CER HM60SJ CH 050C 500V
C175 4030006860 S.CER C1608 JB 1H 102K-T T 82.9/52.9
C176 4030006860 S.CER C1608 JB 1H 102K-T T 63.5/64.5
C177 4030006900 S.CER C1608 JB 1H 103K-T T 70.9/53.4
C178 4030006860 S.CER C1608 JB 1H 102K-T T 66/51.3
C179 4030006850 S.CER C1608 JB 1H 471K-T T 44.2/35.7
C180 4030006860 S.CER C1608 JB 1H 102K-T T 73.4/54.9
C181 4030006860 S.CER C1608 JB 1H 102K-T T 59.4/55.4
C182 4030006850 S.CER C1608 JB 1H 471K-T T 45.5/35.7
C184 4030006900 S.CER C1608 JB 1H 103K-T T 60.2/58.3
C185 4030006850 S.CER C1608 JB 1H 471K-T T 54.7/54.7
C186 4030006860 S.CER C1608 JB 1H 102K-T T 52.5/68.8
S.=Surface mount
[MAIN UNIT]
REF ORDER DESCRIPTION M. H/V
NO. NO.
LOCATION
C194 4030007130 S.CER C1608 CH 1H 101J-T T 41.3/70.7
C198 4030007130 S.CER C1608 CH 1H 101J-T T 26.1/60.9
C199 4030006850 S.CER C1608 JB 1H 471K-T T 26.1/59.6
C201 4030007050 S.CER C1608 CH 1H 220J-T T 34.3/58.8
C202 4030007130 S.CER C1608 CH 1H 101J-T T 35.6/58.8
C203 4030006850 S.CER C1608 JB 1H 471K-T T 36.9/58.8
C205 4030006860 S.CER C1608 JB 1H 102K-T T 15.9/20.5
C206 4030006850 S.CER C1608 JB 1H 471K-T T 13.8/16.4
C207 4030006860 S.CER C1608 JB 1H 102K-T T 42/25.7
C208 4030006860 S.CER C1608 JB 1H 102K-T T 28.7/17.1
C211 4510004591 ELE 16 ME 470 HC+TS
C212 4030011600 S.CER C1608 JB 1E 104K-T T 4.4/72.7
C213 4510004591 ELE 16 ME 470 HC+TS
C214 4030011600 S.CER C1608 JB 1E 104K-T T 16.1/65.5
C215 4030006900 S.CER C1608 JB 1H 103K-T T 29.6/29.3
C216 4030017490 S.CER C1608 JB 1A 105K-T T 4.7/62.3
C217 4030006860 S.CER C1608 JB 1H 102K-T T 3.9/65.6
C220 4030011810 S.CER C1608 JB 1A 224K-T T 4.3/28.4
C221 4030006860 S.CER C1608 JB 1H 102K-T T 9.1/26.2
C222 4030011600 S.CER C1608 JB 1E 104K-T T 6.4/23.2
C223 4030011600 S.CER C1608 JB 1E 104K-T T 15.5/33.9
C225 4030007140 S.CER C1608 CH 1H 121J-T T 17.5/32
C226 4030011600 S.CER C1608 JB 1E 104K-T T 21.9/30.7
C227 4510008540 S.ELE EEE1CA100SR T 3.1/21.8
C228 4030011600 S.CER C1608 JB 1E 104K-T T 15/23.9
C230 4510008540 S.ELE EEE1CA100SR T 10.9/21.7
C232 4030006860 S.CER C1608 JB 1H 102K-T T 24.7/28.7
C233 4030010770 S.CER C1608 JB 1H 392K-T T 24.7/25.8
C234 4030007130 S.CER C1608 CH 1H 101J-T T 21.9/23.9
C236 4030006850 S.CER C1608 JB 1H 471K-T T 45.1/40.4
C241 4030017380 S.CER ECJ0EC1H050B T 82.5/35.6
C242 4030017460 S.CER ECJ0EB1E102K T 79.9/33.8
C243 4030017390 S.CER ECJ0EC1H180J T 81.4/29.8
C244 4030017400 S.CER ECJ0EC1H220J T 81.5/28.5
C245 4030017400 S.CER ECJ0EC1H220J T 80.7/26.3
C246 4030006860 S.CER C1608 JB 1H 102K-T T 75/19.8
C247 4030006860 S.CER C1608 JB 1H 102K-T T 78.5/18.3
C248 4550007260 S.TAN F931C475MAABMA T 52.5/38
C249 4030011600 S.CER C1608 JB 1E 104K-T T 52.3/26.8
C250 4030006900 S.CER C1608 JB 1H 103K-T T 53.6/26.8
C251 4030006860 S.CER C1608 JB 1H 102K-T T 53.4/35.5
C252 4550003260 S.TAN TEESVA 1V 684M8R T 62.9/23.7
C254 4550002980 S.TAN TEESVA 1C 225M8R T 65/23.7
C257 4610001590 S.TRI TZC3R100A110R00 T 59.8/41.3
C258 4030007020 S.CER C1608 CH 1H 120J-T T 57/44.3
C259 4030007040 S.CER C1608 CH 1H 180J-T T 55.9/37.7
C269 4510008540 S.ELE EEE1CA100SR T 10.4/50.2
C270 4030011600 S.CER C1608 JB 1E 104K-T T 5.7/55.7
C273 4510008540 S.ELE EEE1CA100SR T 11.8/56.2
C274 4030011600 S.CER C1608 JB 1E 104K-T T 5.7/58.6
C275 4030006860 S.CER C1608 JB 1H 102K-T T 30/65.8
C276 4510008540 S.ELE EEE1CA100SR T 37/64.9
C277 4030006850 S.CER C1608 JB 1H 471K-T T 32.2/60.3
C278 4030006860 S.CER C1608 JB 1H 102K-T T 22.2/54.8
C279 4510008540 S.ELE EEE1CA100SR T 25.3/55.5
C280 4030006850 S.CER C1608 JB 1H 471K-T T 22.1/51.9
C291 4030006850 S.CER C1608 JB 1H 471K-T T 39.4/25.7
C292 4030006850 S.CER C1608 JB 1H 471K-T T 40.7/25.7
C294 4030006860 S.CER C1608 JB 1H 102K-T T 6.6/53
C295 4030007090 S.CER C1608 CH 1H 470J-T T 17.6/51.9
C296 4030006850 S.CER C1608 JB 1H 471K-T T 11.6/46.5
C297 4030006850 S.CER C1608 JB 1H 471K-T T 18.9/48.9
C298 4030006860 S.CER C1608 JB 1H 102K-T T 11.6/45
C299 4030007090 S.CER C1608 CH 1H 470J-T T 11.6/43.6
C300 4030007090 S.CER C1608 CH 1H 470J-T T 11.6/42.3
C301 4030006850 S.CER C1608 JB 1H 471K-T T 34.4/34
C302 4030006850 S.CER C1608 JB 1H 471K-T T 35.1/25.7
C303 4030006860 S.CER C1608 JB 1H 102K-T T 36.8/25.7
C304 4030006860 S.CER C1608 JB 1H 102K-T T 36.4/35.2
C305 4030006860 S.CER C1608 JB 1H 102K-T T 41.5/38.7
C306 4030007090 S.CER C1608 CH 1H 470J-T T 50.6/24.2
C307 4030006900 S.CER C1608 JB 1H 103K-T T 60.4/24.3
J1 6510021721 S.CNR 30FLT-SM2-TB (LF) (SN) T 41.5/30.3
J2 6510024601 CNR S5B-PH-K-S (LF) (SN)
W1 8900012401 CBL OPC-1264A <TJM>
W2 7120000470 JMP ERDS2T0
[VR UNIT]
REF ORDER DESCRIPTION M. H/V
NO. NO.
LOCATION
R1 7210003140 VAR TP96N97N-15SK-10KA-2685
J1 6510009381 CNR B5B-ZR (LF) (SN)
[SQL UNIT]
REF ORDER DESCRIPTION M. H/V
NO. NO.
LOCATION
R1 7210003150 VAR TP96N97-15SK-10KB-2685
J1 6510009471 CNR S3B-ZR (LF) (SN)
Screw abbreviations A, B0, BT: Self-tapping PH: Pan head ZK: Black NI-ZU: Nickel-Zinc SUS: Stainless
7 - 1
SECTION 7 MECHANICAL PARTS AND DISASSEMBLY
[CHASSIS PARTS]
REF ORDER DESCRIPTION QTY.
NO. NO.
J1 6510004880 MR-DSE-01 1
W1 8900012331 OPC-1258A 1
MP2 8010019302 2685 CHASSIS-2 1
MP3 8930061050 2685 R-BUSH PLATE 1
MP4 8510015570 2685 CASE [Black] 1
8510018180 2685 CASE (C) [Super White] 1
8510015690 2685 CASE (B) [Gray] 1
MP5 8930060440 2685 R-PACKING 1
MP6 8930060451 2685 F-PACKING-1 [Black] 1
8930060451 2685 F-PACKING-1 [Super White] 1
8930061191 2685 F-PACKING (A)-1 [Gray] 1
MP7 8930034300 1542 ANT SEAL 1
MP8 8930052440 2345 B-IC CLIP 1
MP10 8510015560 2685 MODULE COVER 1
MP11 8930055070 2438 SHEET 1
MP12 8810008661 Screw BT B0 3X8 NI-ZC3 (BT) 6
MP13 8810008201 Screw BTB0 2.6X6NI-ZC3 (BT) 2
MP14 8810002950 Screw BiH M3X6 SUS 2
MP15 8810004540 Screw BiH M3X8 SUS 4
MP16 8810004700 Screw BT A0 3X16 SUS 4
MP19 8510018260 2989 MODULE PLATE 1
[FRONT UNIT]
[ACCESSORIES]
[LOGIC UNIT]
REF ORDER DESCRIPTION QTY.
NO. NO.
R1 7070001220 3.9 ERX2SJ 1
MC1
Optional product
HM-164B [Black] 1
Optional product
HM-164SW [Super White] 1
Optional product
HM-164G [Gray] 1
SP1 2510001350 045P0806-7-1 1
W1 7120000470 ERDS2T0 1
W2 8900012412 OPC-1263B 1
MP1 8210023510 2989 FRONT PANEL [Black] 1
8210023520 2989 FRONT PANEL (A) [Super White] 1
8210023670 2989 FRONT PANEL (B) [Gray] 1
MP2 8930071270 2989 KEY BOARD 1
MP3 8310068590 2989 WINDOW PLATE 1
MP4 8610011370 KNOB N-312 [Black] 2
8610012140 KNOB N-312 (C) [Super White] 2
8610011640 KNOB N-312 (B) [Gray] 2
MP5 8930014280 Speaker net (FX-706) 1
MP6 8810010021 Screw BTB0 2.6X8NI-ZC3 (BT) 4
MP7 8930052010 2345 SHAFT 1
MP8 8930060481 2685 SPRING-1 1
MP9 8110008990 2989 D-COVER 1
MP10 8930060470 2685 SHAFT ANGLE 1
MP11 8930060490 2685 F-BUSH PLATE 1
MP12 8930052280 O-ring (AC) 2
MP13 8930055841 2490 EARTH SPRING-1 1
REF ORDER DESCRIPTION QTY.
NO. NO.
DS1 5030002990 SDT-DM2360-HP-0 1
EP2 8930054970 SRCN-2438-SP-N-W 2
MP1 8210017700 2438 REFLECTOR 1
MP2 8930054650 2438 LCD HOLDER 1
MP3 8930055060 2438 WHITE SHEET 1
[MAIN UNIT]
REF ORDER DESCRIPTION QTY.
NO. NO.
J2 6510024601 S5B-PH-K-S (LF) (SN) 1
W1 8900012401 OPC-1264A 1
W2 7120000470 ERDS2T0 1
MP1* 8510011111 1922 VCO CASE-1 1
MP2 8510011101 1922 VCO COVER-1 1
MP3 8510016170 2685 SHIELD PLATE 1
MP4 8930005320 Filter spacer 2
REF ORDER DESCRIPTION QTY.
NO. NO.
W1 8900009041 OPC-891A 1
MP1 8950005110 2289 MIC HANGER 1
MP2 8010017250 2040 MOBILE BRACKET [Black] 1
8010020710 2040 MOBILE BRACKET (C) [Super White] 1
8010019400 2040 MOBILE BRACKET (B) [Gray] 1
MP3 8610010561 2040 KNOB BOLT-1 [Black] 2
8610011260 2040 KNOB BOLT (B)-1 [Super White] 2
8820001271 2040 KNOB BOLT (C)-1 [Gray] 2
MP4 8810004700 Screw BT A0 3X16 SUS 2
MP5 8810001490 Screw BT A0 5X20 SUS 2
MP6 8850000180 Flat washer M5 SUS 2
MP7 8850000500 S-washer M5 SUS 2
MP8 8310050900 2438 warning sticker 1
[SQL UNIT]
REF ORDER DESCRIPTION QTY.
NO. NO.
R1 7210003150 TP96N97-15SK-10KB-2685 1
J1 6510009471 S3B-ZR (LF) (SN) 1
[VR UNIT]
REF ORDER DESCRIPTION QTY.
NO. NO.
R1 7210003140 TP96N97N-15SK-10KA-2685 1
J1 6510009381 B5B-ZR (LF) (SN) 1
MP2 MP3 MP5
MP4
MP8
W1
MP6 MP7
MP1
For mounting bracket
*: Refer to SECTION 9 BOARD LAYOUTS.
Other manuals for IC-M304
1
Table of contents
Other Icom Transceiver manuals
