Sony Walkman SRF-M37 User manual

SRF-M37
E Model SERVICE MANUAL
FM STEREO/AM PLL SYNTHESIZED RADIO
SPECIFICATIONS
Ver 1.0 2003. 03
Sony Corporation
Personal Audio Company
Published by Sony Engineering Corporation
9-877-168-01
2003C167800-1
© 2003.03
Time display:
24-hour system
Frequency range
Band SRF-M37 Channel step
FM 87.5-108 MHz 0.1 MHz
AM 530-1 710 kHz 10 kHz
531-1 710 kHz 9 kHz
Output
ijack (ø 3.5 mm, stereo minijack) load impedance 24 Ω(North
American model), 16 Ω(Other models)
Power output
2.8 mW + 2.8 mW (at 10 % harmonic distortion)
Power requirements
1.5 V DC, one R03 (size AAA) battery
Dimensions
Approx. 83 ×63 ×32 mm (w/h/d)
(3
3
/
8
×2
1
/
2
×1
5
/
16
inches) incl. projecting parts and controls
Approx. 83 ×63 ×25 mm (w/h/d)
(3
3
/
8
×2
1
/
2
×1 inches) not incl. projecting parts and controls
Mass
Approx. 94 g (3.32 oz.) incl. battery and belt clip.
Accessories Supplied
Stereo headphones (1): North American model
Stereo earphones (1): Other models
Belt Clip (1)
Design and specifications are subject to change without notice.
Battery Life (Approx. hours) (JEITA*)
When using FM AM MW/LW
Sony alkaline 35 52 52
LR 03 (size AAA)
Sony R03 (size AAA) 14 21 21
*Measured by JEITA (Japan Electronics and Information Technology
Industries Association) standards. The actual battery life may vary
depending on the circumstance of the unit.

2
SRF-M37
Notes on chip component replacement
•Never reuse a disconnected chip component.
•Notice that the minus side of a tantalum capacitor may be
damaged by heat.
Flexible Circuit Board Repairing
•Keep the temperature of soldering iron around 270˚C
during repairing.
•Do not touch the soldering iron on the same conductor of the
circuit board (within 3 times).
•Be careful not to apply force on the conductor when soldering
or unsoldering.
SECTION 1
GENERAL This section is extracted
from instruction manual.
VOL POWER
Belt clip / Attache /
Gürtelbefestigung
HOLD
CLOCK
TUNE/TIME SET
PRESET TUNING 1-6
BAND
FM SENS
DX
LOCAL
ijack /
Prise i/
Buchse i
*
1Setting the Clock
The display will flash “AM 12:00” or “0:00” when the battery is first
inserted.
1 Hold down CLOCK for more than 2 seconds.
The beep sounds and the hour flashes in the display.
2 Press TUNE/TIME SET + or –until the correct hour appears in
the display.
Each press changes the digit(s) by one.
When you keep the button pressed, the digit(s) change rapidly.
3 Press CLOCK.
The beep sounds and the minute starts to flash.
Repeat step 2 to set the minute. After setting the
minute, press CLOCK again. The two beeps sound
and the clock starts from 0 seconds.
The clock system varies depending on the model you own.
12-hour system: “AM 12:00” = midnight
24-hour system: “0:00” = midnight

3
SRF-M37
SECTION 2
DISASSEMBLY
Note : Follow the disassembly procedure in the numerical order given.
2-1. Cabinet (Front) Assy
CABINET (FRONT) ASSY
KEY BOARD ASSY
MAIN BOARD ASSY
SET
• This set can be disassembled in the order shown below.
2 four tapping screws
(B 1.7
× 6)
3 cabinet (front) assy
1 Open the battery case lid.

4
SRF-M37
2-3. MAIN Board Assy
2-2. KEY Board Assy
5 battery terminal (+)
4 battery terminal (-)
6 KEY board assy
3 two hooks
1 Remove the soldering from two points.
2 Remove the soldering
from the eleven points.
4 MAIN board ass
y
2 Remove the soldering
from the eleven points.
1 two tapping screws
(B 1.7 × 6)
3 two wire

5
SRF-M37
SECTION 3
ADJUSTMENTS
Setting:
BAND switch: AM
Connection:
ForAM frequency coverage adjustment and FM frequency coverage check.
AM Section
digital
voltmeter
TP10 (VT
)
Connection:
AM RF signal
generator
30% amplitude modulation by
400 Hz signal.
Output level: as low as possible
Put the lead-wire
antenna close to
the set.
level mete
r
set
headphone jack (
i )
16
Ω
+
–
FM Section
FM RF signal
generator
22.5 kHz frequency deviation
by 400 Hz signal.
Output level: as low as possible
0.01 µ FTP12 (ANT)
Setting:
BAND switch: FM
FM SENS switch: DX
Connection:
Adjustment Location
TP10
(VT)
TP12
(ANT)
MAIN BOARD MAIN BOARD
IC2
IC1
(Conductor side)
CT2
L3
AM TRACKING
Adjustment
L4
AM FREQUENCY
COVERAGE Adjustment
(Component side)
CT1 L1
FM TRACKING
Adjustment
AM FREQUENCY COVERAGE ADJUSTMENT
Adjust for a reading on digital voltmeter.
L4 530 kHz 1.3V ±0.1V
Confirm 1,710 kHz 8.1V ±0.3V
AM TRACKING ADJUSTMENT
Adjust for a maximum reading on level meter.
CT2 1480 kHz
L3 590 kHz
FM FREQUENCY COVERAGE CHECK
Check a reading on digital voltmeter.
Confirm 87.5 MHz 6.9V ±0.3V
Confirm 108.0 MHz 12.1V ±0.3V
FM TRACKING ADJUSTMENT
Adjust for a maximum reading on level meter.
CT1 108.0 MHz
L1 87.5 MHz

6
SRF-M37 SECTION 4
DIAGRAMS
1 IC101 tg XOUT
1.1 Vp-p
13 µ s
TIME/div : 4 µs/DIV
VOLT/div : 500 mV/DIV
2 Q106 collector
1.8 Vp-p
262 ns
TIME/div : 100 ns/DIV
VOLT/div : 500 mV/DIV
Note on Schematic Diagram:
•All capacitors are in µF unless otherwise noted. pF: µµF
50 WV or less are not indicated except for electrolytics
and tantalums.
•All resistors are in Ωand 1/4W or less unless otherwise
specified.
•C: panel designation.
•A: B+ Line.
•H: adjustment for repair.
•Powervoltageis dc1.5Vand fedwithregulated dc power
supply from battery terminal.
•Voltages and waveforms are dc with respect to ground
under no-signal (detuned) conditions.
no mark : FM
<>:AM
•Voltages aretaken withaVOM(Input impedance10 MΩ).
Voltage variations may be noted due to normal produc-
tion tolerances.
•Waveforms are taken with a oscilloscope.
Voltage variations may be noted due to normal produc-
tion tolerances.
•Circled numbers refer to waveforms.
•Signal path.
F: FM
f: AM
•Waveform
Note on PrintedWiring Board:
•Y: parts extracted from the conductor side.
•b: Pattern from the side which enables seeing.
•: Carbon pattern.
Caution:
Pattern face side: Parts on the pattern face side seen from
(Side B) the pattern face are indicated.
Parts face side: Partsonthe parts face side seen from
(Side A) the parts face are indicated.
•Indication of transistor
Q
C
These are omitted
EB

77
SRF-M37
4-1. Block Diagram
: FM
• Signal Path
: AM
23
L1
L3
FERRITE-ROD
ANTENNA
D1
D2
2
29
24
27
25
FM
MIX
FM RF IN
FM RF OUT
FM OSC
AM RF IN
AM OSC
FM
OSC
AM
MIX
AM
OSC
OSC
OUT
4
5
FM MIX
AM MIX
12
CF1
10.7MHz
CF2
450kHz
8
10
FM IF IN
AM IF IN
FM
MPX
FM/AM
BUFFER
FM
DET
AM
DET
13
DET
OUT 16
15
11
FRONT-END
IF AMP,DET,FM MPX 26 7
VCC
QUAD RF VCC VCC
14 22
LPF1
MODE2
VCC
VCC
VCC
VCC
VCC
CT1
L2
D3
CT2
D4
L4
IC1
MPX
IN
L1, CT1
FM
TRACKING
L3, CT2
AM
TRACKING
L4
AM
FREQUENCY
COVERAGE
Q5
Q3
RF
AMP
Q6
BUFFER
Q4
SWITCH
10.7MHz
CF3
AUDIO
POWER AMP
IC2
40
DO
Q1
RF
AMP
Q2
BPF1
B.P.F.
FM SENS
DXLOCAL
OFFON
L.P.F
Q104,105
S1
IN 2
4
IN 1
2
VOL
RV1
REF
5
MUTE SW
10
OUT 2
LOUT
ROUT
7
OUT 1 9
J1
DC-DC
CONV
T101
Q106, 107
VCC
38
OSC IN
31
BAND2
21
MODE1
32
BAND1
50
ST/MONO
29
AM BAND
49
MUTE
28
BEEP
X OUT
55
LCD101
LIQUID CRYSTAL
DISPLAY
S102 - S112
KEY MATRIX
X IN
56
X101
75kHz
14
COM1 COM4
517
S1 S13 VOLTAGE
DETECT 21
VDET 35
IC102
HOLD
34
HOLD
S101
KR1
24
DIGITAL TUNING
SYSTEM CONTROL
IC101
KR2
25
KR3
26
KS1
21
KS0
20
KR0
23
KS2
22
DRY BATTRY
SIZE "AAA"
(IEC DESIGNATION R03)
1PC 1.5V
Q101, 102
Q103
VDD
D101
IC103
VCC
BATT
RESET
RESET 54
POWER ON 2 46
VCC
Q7, 8
POWER ON 1 52

88
SRF-M37
4-2. Printed Wiring Boards
IC101
IC102
IC103
IC1
IC2
E
1
16
17
32
33
48
49 64
1
2
3
4
1
4
2
3
EE
E
E
E
E
E
1-686-881-
11
(11)
E
E
E
1
5
610
E
E
E
S
1
5
10
15
16 20 25 30
RV1
MAIN BOARD
KEY BOARD
VOL
C55
C48
C30
C32
C53
C31
C54
C126
C109
C102
T101
JW102
1
5
15
10
17
LCD101
(LIQUID CRYSTAL DISPLAY)
X101
S101
HOLD
OFF
ON
1-686-882-
11
(11)
JW101
S1
FM SENS
DX LOCAL
L7
JW5
CF1
CF2
CF3
J1
TP12
(ANT)
JW4
JW3
L1
L4
TP10
(VT)
CT2
JW1
CT1
W1 W2
151
6
L3
AM FERRITE-ROD
ANTENNA
W1
W2
1
5
16
DRY BATTERY
SIZE "AAA"
(IEC DESIGNATION R03)
1PC 1.5V
W3
LCD
SHIELD
BPF1
JW2
S103
4
S110
6
S109
3
S108
2
S105
1
-
S106
5
S104
BAND
S102
POWER
S107 S112
TUNE/
TIME SET S111
CLOCK
+
12
A
B
C
D
E
F
G
H
34567891011
12
Ref. No. Location
D1 G-11
D2 G-11
D3 F-10
D4 G-8
D6 B-8
D7 B-10
D101 E-4
D102 D-5
D103 A-5
D104 G-2
D105 G-2
IC1 E-10
IC2 D-8
IC101 D-5
IC102 D-4
IC103 F-4
Q1 D-11
Q2 C-11
Q3 C-9
Q4 C-9
Q5 G-10
Q6 E-9
Q7 G-10
Q8 G-11
Q101 G-4
Q102 F-4
Q103 E-4
Q104 C-4
Q105 C-4
Q106 B-6
Q107 B-5
• Semiconductor
Location

99
SRF-M37
4-3. Schematic Diagram • See page 6 for Waveforms. • See page 10 for IC Block Diagrams.
IC1
JC3
BPF1
JC6
R3
R4
C29
C2
Q2
Q1
JC8
C38
Q3
CF1 CF2
CF3
C40
R21
Q4
C12
CT1
C3
C60
R6
R5
C4
C20
D1
D2
C19
L12
Q5
C17
C18
CT2
C14
JC18
R11
D4
C25
C13
R15
C27 C23
C24
C21
R14
R32
C35
JC1L2
C9
C6
C7
C8
R7
C37
D3
C36
R20
JC13
R19
Q6
Q7
Q8
JC4
JC9
S1
R2
R1C1
BP1
R29
C31
C32
C33
C30
C39
C42
C41
C44
C45
C48 RV1
C46
C47
R22
R23
JC11
TP15
TP17
TP13
TP14
IC2
C49
C50
C51
C52
R26
JC12
R27
R28
C54
C55
J1
D6
D7
TP1
TP2
TP3
TP4
TP5
TP6
TP7
TP8
TP9
R112
TP101
TP107
TP108
IC102 IC103
R127
R128
R130
C118
C101
R105
R103
R106
C103
C104
C105
C106
C109
C107
C108
C110
C111
C127
R111
JC107
C131
JC110
R108
R110
IC101
W3
W3
R143
R126
R109 C116
C112
C113
C114
L101
R113
JC101
JC103
JC105
S101
R129
C132
JC109
R115
R117
R118
R119
R120
R121
R122
R123
R124
R125
C115
C117
L102
C135
JC113
R132
C120
R133 C121
Q104
Q105
C134
TP113
R144
R146
C140
C141
C142 JC108
C119 R131
JC104 R134
C122
D102 R135
Q106
Q107
R138
R136
R137
D103
C124
C125
C126 R139
JC112
C102
D101
Q103
JC106
Q102
R101
Q101
R102
D105
D104
L103
L7
TP109
TP110
TP111
TP112
TP102
TP103
TP104
TP105
R12
R8
R30
JC5
JC7
R114
C22
R140
S107 S112
JC10
C123
T101
TP10
C43
S102 S105 S108 S111
S103 S106 S109
S104 S110
TP12
C53
L1
R13
W1
W1 W2
W2
X101
L3
L4
TA2154AFN
GFMB7
22k
220
DTA114TUA
2SC3931
DTC144TUA
10.7MHz 450KHz
DISCRI
1k
DTC144TUA
10p
1000p
100p
100k
100k
1000p
HVU300A
HVU300A
47p
2SK209
8p
10p
10p
3p
10k
KV1610S-TL2
470p
1M
1000p 22p
2p
2.2k
1k
2p
1000p
100p
22p
100k HVU300A
22k
220
2SC3931
DTA114YUA
DTC144TUA
100
100
2.2
4V 4V
16V
6.3V 10k/10k
1k
1k
LA4535M
4700p
4700p
22
10k
10k
4V
4V
IPS226
IPS226
10k
XC61CN1002NR XC61CN0802NR
1M
10k
470k
1M
10k
1k
47p
10p
6.3V
3p
100k
1k
1k
TC9329FA
100k
100k
1k
100k
100k
1k
1k
1k
4.7k
4.7k
4.7k
4.7k
4.7k
4.7k
4.7k
2.2k
1000p
10k
2SC4081
2SC4081
1000p
100k
100k
1000p
1000p
1000p
10k
100k
ISS355 1k
2SC4081
2SC4081
100k
47k
100k
UDZSTE-1713B
4V 10
0.047F
S.CAP
RB521S
2SA1576
DTC144TUA
1k
2SB97O
100k
UDZSTE-174.7B
UDZSTE-174.7B
220
100k
10
1k
100k
10p
D/D TRANS
(VT)
(ANT)
4V
FM RF COIL
220
75KHz
MW FERRITE
ROD ANTENNA
MWOSC COIL

1010
SRF-M37
4-4. IC Block Diagrams
IC1 TA2154AFN-EL
IC2 LA4535M-TE-L
BIAS
POWER
SWITCH
AMP 1
AMP 2
MUTE
CIRCUIT MUTE SWITCHPOWER SWITCH
OUT 1
OUT 2
POWER GND
V
CC
REF
IN 2
IN 1
PRE GND
6
7
8
9
10
5
4
3
2
1
1234 5 6 7 89 10 11 12 13 14
2021 19 18 17 162223252627
28 24
30 29
15
TV RF OUT FM RF OUT AM BYPASS AM RF IN RFVCC AM OSC TV FM OSC OSC OUT MODE2 MODE1 IF REQ IF COUNT LPF2B LPF2A L OUT
R OUT
LPF1
MPX IN
DET OUT
QUAD
AM IF IN
GND
FM IF IN
VCC
AGC
AM MIX
FM MIX
RF GND
FM RF IN
TV RF IN
AM
OSC
AM
MIX FM/AM/TV
PW SW SW
1/2 BUFF
LEVEL
DET
AM
DET
1/8 or
1/16
TV
OSC
FM
OSC
IF
BUFF
BUFF
BUFF
FM/TV
MIX
FM
RM
TV
RF
FM
DET
FM MPX
FM
IF
AF
AGC AM
IF
4-5. IC Pin Function Description
• IC101 TC9329FA-123 (DIGITALTUNING, SYSTEM CONTROL)
Pin No.
1 to 4
5 to 17
18
19
20 to 22
23 to 26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42 to 45
46
47, 48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
I/O
O
O
I
I
O
I
—
O
O
O
O
O
I
I
I
I
—
I
—
O
—
—
O
I
O
O
O
O
—
I
O
I
—
—
—
—
—
—
—
—
Pin Name
COM1 to COM4
S1 to S13
TEST
MB SW
KS0 to KS2
KR0 to KR3
VDD
BEEP
AM BAND
LW/MW1
BAND2
BAND1
TEST
HOLD
VDET
IF IN2
GND
OSC IN
VDD
DO
V REG
P3-0 to P3-3
POWER ON 2
INT1, INT2
MUTE
ST/MONO
LW/MW2
POWER ON 1
P2-3
RESET
XOUT
XIN
GND
VDB
C1
C2
VEE
C3
C4
VLCD
Description
LCD common output
LCD segment output
Test mode control signal input (“H” : test mode)
Not used
Key source
Key return
Power supply terminal
Beep signal output
Band selection signal output (“H” : AM)
Not used
Band selection signal output (“L” : FM)
Band selection signal output (“L” : AM)
Not used (connected to the ground)
HOLD switch signal input(“L” : hold on)
1.0V battery voltage detection signal input (“L” : lower than 1.0V)
Not used
Ground terminal
Programmable counter input terminal
Power supply terminal
Phase comparator output
Phase comparator constant voltage supply
Not used
Power supply control signal output (“L” : radio on)
Destination setting terminal
Muting control signal output (“L” : muting on)
Stereo/mono selection signal output
Not used
Power supply control signal output (“H” : radio on)
Not used
Reset signal input (“L” : microcomputer reset)
External crystal resonator terminal (75kHz)
External crystal resonator terminal (75kHz)
Ground terminal
Power voltage step-up terminal
Voltage doubler boosting capacitor terminal
Voltage doubler boosting capacitor terminal
1.5V constant voltage power supply output for LCD drive
Voltage doubler boosting capacitor terminal
Voltage doubler boosting capacitor terminal
3.0V constant voltage power supply output for LCD drive

SECTION 5
EXPLODEDVIEWS
NOTE:
•-XX, -X mean standardized parts, so they may
have some differences from the original one.
•Items marked “*” are not stocked since they
are seldom required for routine service. Some
delayshouldbeanticipatedwhenorderingthese
items.
•Themechanicalpartswithnoreferencenumber
in the exploded views are not supplied.
11
SRF-M37
Ref. No. Part No. Description Remarks Ref. No. Part No. Description Remarks
13-247-142-11 CABINET (FRONT)
23-247-144-01 PANEL (FRONT)
3X-3383-581-1 CABINET(FRONT) ASSY
41-786-468-21 SWITCH, RUBBER KEY (PRESET)
5 3-247-150-01 TERMINAL (-), BATTERY
*6A-3347-451-A KEY BOARD, COMPLETE
73-247-153-01 SHEET (HOLD)
1
13
7
8
11
7
10
5
3
2
4
6
12
9
not
supplied
83-318-203-11 SCREW (B1.7X6), TAPPING
*9A-3347-447-A MAIN BOARD, COMPLETE
10 3-247-143-11 CABINET (REAR)
11 3-247-145-01 LID, BATTERY CASE
12 3-250-687-01 SHIELD (B)
13 3-247-149-01 TERMINAL (+), BATTERY

Ref. No. Part No. Description Remarks Ref. No. Part No. Description Remarks
12
SRF-M37 SECTION 6
ELECTRICAL PARTS LIST
NOTE:
•Due to standardization, replacements in the
parts list may be different from the parts
specifiedinthediagramsor the components
used on the set.
•-XX, -X mean standardized parts, so they
may have some difference from the original
one.
•Items marked “*” are not stocked since they
are seldom required for routine service.
Some delay should be anticipated when
ordering these items.
•CAPACITORS:
uF: µF
•RESISTORS
All resistors are in ohms.
METAL: metal-film resistor
METAL OXIDE: Metal Oxide-film resistor
F: nonflammable
•COILS
uH: µH
•SEMICONDUCTORS
In each case, u: µ, for example:
uA...: µA... , uPA... , µPA... ,
uPB... , µPB... , uPC... , µPC... ,
uPD..., µPD...
When indicating parts by reference number,
please include the board name.
*A-3347-451-A KEY BOARD, COMPLETE
********************
1-694-972-11 CONDUCTIVE BOARD, CONNECTION
3-247-146-01 HOLDER (LCD)
< CAPACITOR >
C101 1-115-156-11 CERAMIC CHIP 1uF 10V
C102 1-125-701-11 DOUBLE LAYER 0.047F 5.5V
C103 1-162-970-11 CERAMIC CHIP 0.01uF 10% 25V
C104 1-162-923-11 CERAMIC CHIP 47PF 5% 50V
C105 1-162-915-11 CERAMIC CHIP 10PF 0.5PF 50V
C106 1-164-156-11 CERAMIC CHIP 0.1uF 25V
C107 1-164-156-11 CERAMIC CHIP 0.1uF 25V
C108 1-164-156-11 CERAMIC CHIP 0.1uF 25V
C109 1-126-157-11 ELECT 10uF 20% 16V
C110 1-164-156-11 CERAMIC CHIP 0.1uF 25V
C111 1-164-156-11 CERAMIC CHIP 0.1uF 25V
C112 1-113-619-11 CERAMIC CHIP 0.47uF 10V
C113 1-115-156-11 CERAMIC CHIP 1uF 10V
C114 1-162-970-11 CERAMIC CHIP 0.01uF 10% 25V
C115 1-164-156-11 CERAMIC CHIP 0.1uF 25V
C116 1-115-156-11 CERAMIC CHIP 1uF 10V
C117 1-115-156-11 CERAMIC CHIP 1uF 10V
C118 1-115-156-11 CERAMIC CHIP 1uF 10V
C119 1-162-970-11 CERAMIC CHIP 0.01uF 10% 25V
C120 1-115-416-11 CERAMIC CHIP 0.001uF 5.00% 25V
C121 1-127-715-91 CERAMIC CHIP 0.22uF 10% 16V
C122 1-165-128-11 CERAMIC CHIP 0.22uF 16V
C123 1-162-915-11 CERAMIC CHIP 10PF 0.5PF 50V
C124 1-164-156-11 CERAMIC CHIP 0.1uF 25V
C125 1-115-156-11 CERAMIC CHIP 1uF 10V
C126 1-124-589-11 ELECT 47uF 20% 16V
C127 1-162-908-11 CERAMIC CHIP 3PF 0.25PF 50V
C131 1-115-156-11 CERAMIC CHIP 1uF 10V
C132 1-115-156-11 CERAMIC CHIP 1uF 10V
C134 1-162-964-11 CERAMIC CHIP 0.001uF 10% 50V
C135 1-162-970-11 CERAMIC CHIP 0.01uF 10% 25V
C140 1-162-964-11 CERAMIC CHIP 0.001uF 10% 50V
C141 1-162-964-11 CERAMIC CHIP 0.001uF 10% 50V
C142 1-162-964-11 CERAMIC CHIP 0.001uF 10% 50V
< DIODE >
D101 8-719-071-34 DIODE RB521S-30-TE61
D102 8-719-988-61 DIODE 1SS355TE-17
D103 8-719-083-63 DIODE UDZSTE-1713B
D104 8-719-083-60 DIODE UDZSTE-174.7B
D105 8-719-083-60 DIODE UDZSTE-174.7B
< IC >
IC101 6-802-891-01 IC TC9329FA-123
IC102 8-759-690-96 IC XC61CN1002NR
IC103 6-701-978-01 IC XC61CN0802NR
< CONDUCTOR >
JC101 1-216-864-11 METAL CHIP 0 5% 1/16W
JC103 1-216-864-11 METAL CHIP 0 5% 1/16W
JC104 1-216-864-11 METAL CHIP 0 5% 1/16W
JC105 1-216-864-11 METAL CHIP 0 5% 1/16W
JC106 1-216-864-11 METAL CHIP 0 5% 1/16W
JC107 1-216-864-11 METAL CHIP 0 5% 1/16W
JC108 1-216-864-11 METAL CHIP 0 5% 1/16W
JC109 1-216-864-11 METAL CHIP 0 5% 1/16W
JC110 1-216-864-11 METAL CHIP 0 5% 1/16W
JC112 1-216-864-11 METAL CHIP 0 5% 1/16W
JC113 1-216-864-11 METAL CHIP 0 5% 1/16W
< COIL >
L101 1-412-995-21 INDUCTOR 22uH
L102 1-412-995-21 INDUCTOR 22uH
L103 1-469-845-11 INDUCTOR 4.7uH
< LIQUID CRYSTAL DISPLAY >
LCD101 1-805-123-11 DISPLAY PANEL, LIQUID CRYSTAL
< TRANSISTOR >
Q101 8-729-046-89 TRANSISTOR 2SB970-S(TX).S0
Q102 8-729-029-15 TRANSISTOR DTC144TUA-T106
Q103 8-729-026-52 TRANSISTOR 2SA1576A-T106-R
Q104 8-729-905-35 TRANSISTOR 2SC4081T106R
Q105 8-729-905-35 TRANSISTOR 2SC4081T106R
Q106 8-729-905-35 TRANSISTOR 2SC4081T106R
Q107 8-729-905-35 TRANSISTOR 2SC4081T106R
< RESISTOR >
R101 1-216-821-11 METAL CHIP 1K 5% 1/16W
R102 1-216-845-11 METAL CHIP 100K 5% 1/16W
R103 1-216-833-11 METAL CHIP 10K 5% 1/16W
R105 1-216-857-11 METAL CHIP 1M 5% 1/16W
R106 1-216-821-11 METAL CHIP 1K 5% 1/16W
R108 1-216-821-11 METAL CHIP 1K 5% 1/16W
R109 1-216-821-11 METAL CHIP 1K 5% 1/16W
R110 1-216-821-11 METAL CHIP 1K 5% 1/16W
R111 1-216-845-11 METAL CHIP 100K 5% 1/16W
R112 1-216-833-11 METAL CHIP 10K 5% 1/16W
KEY

Ref. No. Part No. Description Remarks Ref. No. Part No. Description Remarks
13
SRF-M37
R113 1-216-845-11 METAL CHIP 100K 5% 1/16W
R114 1-216-821-11 METAL CHIP 1K 5% 1/16W
R115 1-216-821-11 METAL CHIP 1K 5% 1/16W
R117 1-216-821-11 METAL CHIP 1K 5% 1/16W
R118 1-216-821-11 METAL CHIP 1K 5% 1/16W
R119 1-216-829-11 METAL CHIP 4.7K 5% 1/16W
R120 1-216-829-11 METAL CHIP 4.7K 5% 1/16W
R121 1-216-829-11 METAL CHIP 4.7K 5% 1/16W
R122 1-216-829-11 METAL CHIP 4.7K 5% 1/16W
R123 1-216-829-11 METAL CHIP 4.7K 5% 1/16W
R124 1-216-829-11 METAL CHIP 4.7K 5% 1/16W
R125 1-216-829-11 METAL CHIP 4.7K 5% 1/16W
R126 1-216-845-11 METAL CHIP 100K 5% 1/16W
R127 1-216-857-11 METAL CHIP 1M 5% 1/16W
R128 1-216-833-11 METAL CHIP 10K 5% 1/16W
R129 1-216-845-11 METAL CHIP 100K 5% 1/16W
R130 1-216-853-11 METAL CHIP 470K 5% 1/16W
R131 1-216-833-11 METAL CHIP 10K 5% 1/16W
R132 1-216-825-11 METAL CHIP 2.2K 5% 1/16W
R133 1-216-833-11 METAL CHIP 10K 5% 1/16W
R134 1-216-845-11 METAL CHIP 100K 5% 1/16W
R135 1-216-821-11 METAL CHIP 1K 5% 1/16W
R136 1-216-841-11 METAL CHIP 47K 5% 1/16W
R137 1-216-845-11 METAL CHIP 100K 5% 1/16W
R138 1-216-845-11 METAL CHIP 100K 5% 1/16W
R139 1-216-797-11 METAL CHIP 10 5% 1/16W
R140 1-216-845-11 METAL CHIP 100K 5% 1/16W
R143 1-216-845-11 METAL CHIP 100K 5% 1/16W
R144 1-216-845-11 METAL CHIP 100K 5% 1/16W
R146 1-216-845-11 METAL CHIP 100K 5% 1/16W
< SWITCH >
S101 1-771-722-11 SWITCH, SLIDE (HOLD)
< TRANFORMER >
T101 1-439-578-11 TRANSFORMER, DC/DC CONVERTER
< VIBRATOR >
X101 1-767-388-11 VIBRATOR, CRYSTAL (75kHz)
************************************************************
*A-3347-447-A MAIN BOARD, COMPLETE
*********************
3-247-147-01 HOLDER (ANT)
3-247-148-01 HOLDER (H/P)
< FILTER >
BPF1 1-236-711-21 FILTER, BAND PASS
< CAPACITOR >
C1 1-164-230-11 CERAMIC CHIP 220PF 5.00% 50V
C2 1-162-970-11 CERAMIC CHIP 0.01uF 10% 25V
C3 1-115-416-11 CERAMIC CHIP 0.001uF 5.00% 25V
C4 1-115-416-11 CERAMIC CHIP 0.001uF 5.00% 25V
C6 1-115-416-11 CERAMIC CHIP 0.001uF 5.00% 25V
C7 1-162-927-11 CERAMIC CHIP 100PF 5% 50V
C8 1-162-919-11 CERAMIC CHIP 22PF 5% 50V
C9 1-162-907-11 CERAMIC CHIP 2PF 0.25PF 50V
C12 1-162-970-11 CERAMIC CHIP 0.01uF 10% 25V
C13 1-162-970-11 CERAMIC CHIP 0.01uF 10% 25V
C14 1-162-908-11 CERAMIC CHIP 3PF 0.25PF 50V
C17 1-162-913-11 CERAMIC CHIP 8PF 0.50PF 50V
C18 1-162-915-11 CERAMIC CHIP 10PF 0.5PF 50V
C19 1-162-923-11 CERAMIC CHIP 47PF 5% 50V
C20 1-115-156-11 CERAMIC CHIP 1uF 10V
C21 1-162-970-11 CERAMIC CHIP 0.01uF 10% 25V
C22 1-162-970-11 CERAMIC CHIP 0.01uF 10% 25V
C23 1-162-919-11 CERAMIC CHIP 22PF 5% 50V
C24 1-162-907-11 CERAMIC CHIP 2PF 0.25PF 50V
C25 1-164-315-11 CERAMIC CHIP 470PF 5.00% 50V
C27 1-162-964-11 CERAMIC CHIP 0.001uF 10% 50V
C29 1-162-970-11 CERAMIC CHIP 0.01uF 10% 25V
C30 1-124-259-11 ELECT 4.7uF 20.00% 16V
C31 1-126-518-11 ELECT 470uF 20.00% 4V
C32 1-126-518-11 ELECT 470uF 20.00% 4V
C33 1-115-156-11 CERAMIC CHIP 1uF 10V
C35 1-162-970-11 CERAMIC CHIP 0.01uF 10% 25V
C36 1-162-970-11 CERAMIC CHIP 0.01uF 10% 25V
C37 1-162-970-11 CERAMIC CHIP 0.01uF 10% 25V
C38 1-115-156-11 CERAMIC CHIP 1uF 10V
C39 1-164-227-11 CERAMIC CHIP 0.022uF 10% 25V
C40 1-164-227-11 CERAMIC CHIP 0.022uF 10% 25V
C41 1-113-619-11 CERAMIC CHIP 0.47uF 10V
C42 1-165-176-11 CERAMIC CHIP 0.047uF 10.00% 16V
C43 1-164-156-11 CERAMIC CHIP 0.1uF 25V
C44 1-162-970-11 CERAMIC CHIP 0.01uF 10% 25V
C45 1-162-970-11 CERAMIC CHIP 0.01uF 10% 25V
C46 1-115-156-11 CERAMIC CHIP 1uF 10V
C47 1-115-156-11 CERAMIC CHIP 1uF 10V
C48 1-126-157-11 ELECT 10uF 20% 16V
C49 1-162-968-11 CERAMIC CHIP 0.0047uF 10% 50V
C50 1-162-968-11 CERAMIC CHIP 0.0047uF 10% 50V
C51 1-115-156-11 CERAMIC CHIP 1uF 10V
C52 1-115-156-11 CERAMIC CHIP 1uF 10V
C53 1-126-518-11 ELECT 470uF 20.00% 4V
C54 1-124-584-00 ELECT 100uF 20% 10V
C55 1-124-584-00 ELECT 100uF 20% 10V
C60 1-162-927-11 CERAMIC CHIP 100PF 5% 50V
< FILTER >
CF1 1-795-846-21 FILTER, CERAMIC
CF2 1-795-323-11 FILTER, CERAMIC
CF3 1-795-845-21 DISCRIMINATOR, CERAMIC
< TRIMMER >
CT1 1-141-601-11 CAP, ADJ
CT2 1-141-601-11 CAP, ADJ
< DIODE >
D1 8-719-987-50 DIODE HVU-300A-TRU
D2 8-719-987-50 DIODE HVU-300A-TRU
D3 8-719-987-50 DIODE HVU-300A-TRU
D4 6-500-187-01 DIODE KV1610STL2
D6 8-719-062-51 DIODE 1PS226-115
D7 8-719-062-51 DIODE 1PS226-115
KEY MAIN

Ref. No. Part No. Description Remarks Ref. No. Part No. Description Remarks
14
SRF-M37
< IC >
IC1 6-703-664-01 IC TA2154AFN-EL
IC2 6-700-362-01 IC LA4535M-TE-L
< JACK >
J1 1-770-894-11 JACK ( i)
< CONDUCTOR >
JC1 1-216-864-11 METAL CHIP 0 5% 1/16W
JC3 1-216-864-11 METAL CHIP 0 5% 1/16W
JC4 1-216-864-11 METAL CHIP 0 5% 1/16W
JC5 1-216-864-11 METAL CHIP 0 5% 1/16W
JC6 1-216-864-11 METAL CHIP 0 5% 1/16W
JC7 1-216-864-11 METAL CHIP 0 5% 1/16W
JC8 1-216-864-11 METAL CHIP 0 5% 1/16W
JC9 1-216-864-11 METAL CHIP 0 5% 1/16W
JC10 1-216-864-11 METAL CHIP 0 5% 1/16W
JC11 1-216-864-11 METAL CHIP 0 5% 1/16W
JC12 1-216-864-11 METAL CHIP 0 5% 1/16W
JC13 1-216-864-11 METAL CHIP 0 5% 1/16W
JC18 1-216-864-11 METAL CHIP 0 5% 1/16W
< COIL >
L1 1-428-768-11 COIL, AIR-CORE
L2 1-414-684-11 INDUCTOR 27NH
L3 1-456-251-11 COIL, FERRITE-ROD ANTENNA (MW)
L4 1-456-250-11 COIL, OSCILLATION (MW)
L7 1-411-393-11 COIL, TRAP
L12 1-412-963-11 INDUCTOR 100uH
< TRANSISTOR >
Q1 8-729-423-52 TRANSISTOR 2SC3931-C-TX
Q2 8-729-028-74 TRANSISTOR DTA114TUA-T106
Q3 8-729-029-15 TRANSISTOR DTC144TUA-T106
Q4 8-729-029-15 TRANSISTOR DTC144TUA-T106
Q5 8-729-109-44 TRANSISTOR 2SK209Y-TE85L
Q6 8-729-423-52 TRANSISTOR 2SC3931-C-TX
Q7 8-729-028-76 TRANSISTOR DTA114YUA-T106
Q8 8-729-029-15 TRANSISTOR DTC144TUA-T106
< RESISTOR >
R1 1-216-809-11 METAL CHIP 100 5% 1/16W
R2 1-216-809-11 METAL CHIP 100 5% 1/16W
R3 1-216-837-11 METAL CHIP 22K 5% 1/16W
R4 1-216-813-11 METAL CHIP 220 5% 1/16W
R5 1-216-845-11 METAL CHIP 100K 5% 1/16W
R6 1-216-845-11 METAL CHIP 100K 5% 1/16W
R7 1-216-845-11 METAL CHIP 100K 5% 1/16W
R8 1-216-845-11 METAL CHIP 100K 5% 1/16W
R11 1-216-833-11 METAL CHIP 10K 5% 1/16W
R12 1-216-813-11 METAL CHIP 220 5% 1/16W
R13 1-216-813-11 METAL CHIP 220 5% 1/16W
R14 1-216-825-11 METAL CHIP 2.2K 5% 1/16W
R15 1-216-857-11 METAL CHIP 1M 5% 1/16W
R19 1-216-813-11 METAL CHIP 220 5% 1/16W
R20 1-216-837-11 METAL CHIP 22K 5% 1/16W
R21 1-216-821-11 METAL CHIP 1K 5% 1/16W
R22 1-216-821-11 METAL CHIP 1K 5% 1/16W
R23 1-216-821-11 METAL CHIP 1K 5% 1/16W
R26 1-216-801-11 METAL CHIP 22 5% 1/16W
R27 1-216-833-11 METAL CHIP 10K 5% 1/16W
R28 1-216-833-11 METAL CHIP 10K 5% 1/16W
R29 1-216-789-11 METAL CHIP 2.2 5% 1/16W
R30 1-216-797-11 METAL CHIP 10 5% 1/16W
R32 1-216-821-11 METAL CHIP 1K 5% 1/16W
< VARIABLE RESISTOR >
RV1 1-227-540-11 RES, VAR, CARBON 10K/10K (VOL)
< SWITCH >
S1 1-771-722-11 SWITCH, SLIDE (FM SENS)
************************************************************
MISCELLANEOUS
**************
41-786-468-21 SWITCH, RUBBER KEY (PRESET)
************************************************************
ACCESSORIES
***********
3-048-389-21 CLIP, BELT
3-249-146-11 MANUAL, INSTRUCTION (ENGLISH, FRENCH,
DUTCH, SPANISH, PORTUGUESE)
8-954-008-93 RECEIVER,EAR MDR-E808LP/C1 SET
MAIN

15
SRF-M37
MEMO

REVISION HISTORY
Clicking the version allows you to jump to the revised page.
Also, clicking the version at the upper right on the revised page allows you to jump to the next revised
page.
Ver. Date Description of Revision
1.0 2003.03 New
SRF-M37