Sony SRF-18 User manual

SERVICE MANUAL
Sony Corporation
Published by Sony Techno Create Corporation
SRF-18
SPECIFICATIONS
FM STEREO/AM RADIO
9-893-410-02
2012C33-1
© 2012.03
E Model
Ver. 1.1 2012.03
Frequency range:
FM: 87.5 MHz - 108 MHz
AM: 530 kHz - 1,710 kHz
Speaker:
Approx. 3.6 cm (1 7/16 inches) dia, 7.2 (2)
Input:
AUDIO IN jack ( 3.5 mm stereo minijack) (1)
Outputs:
(headphones) jack ( 3.5 mm stereo minijack) (1)
AUDIO OUT jack ( 3.5 mm stereo minijack) (1)
Power output:
80 mW + 80 mW (JEITA*)
Power requirements:
3 V DC, two size AA (R6) batteries
Dimensions:
Approx. 155 mm × 78.5 mm × 32.5 mm (6 1/8inches × 3 1/8inches × 1 5/16 inches)
(w/h/d, projecting parts not included)
Approx. 155.4 mm × 80.3 mm × 34.2 mm (6 1/8inches × 3 1/4inches × 1 3/8inches)
(w/h/d, projecting parts included)
(JEITA*)
Mass:
Approx. 198 g (7 oz) (batteries included)
* JEITA (Japan Electronics and Information Technology Industries Association) standards.
Supplied accessories
Operating Instructions (1)
Audio connecting cable (stereo mini plug stereo mini plug) (1)
Design and specications are subject to change without notice.
On Copyrights
“WALKMAN” and “WALKMAN” logo are registered trademarks of Sony
Corporation.
NOTES ON CHIP COMPONENT REPLACEMENT
• Never reuse a disconnected chip component.
• Notice that the minus side of a tantalum capacitor may be dam-
aged by heat.
UNLEADED SOLDER
Boards requiring use of unleaded solder are printed with the lead-
free mark (LF) indicating the solder contains no lead.
(Caution: Some printed circuit boards may not come printed with
the lead free mark due to their particular size)
: LEAD FREE MARK
Unleaded solder has the following characteristics.
• Unleaded solder melts at a temperature about 40 °C higher
than ordinary solder.
Ordinary soldering irons can be used but the iron tip has to be
applied to the solder joint for a slightly longer time.
Soldering irons using a temperature regulator should be set to
about 350 °C.
Caution: The printed pattern (copper foil) may peel away if
the heated tip is applied for too long, so be careful!
• Strong viscosity
Unleaded solder is more viscous (sticky, less prone to flow)
than ordinary solder so use caution not to let solder bridges
occur such as on IC pins, etc.
• Usable with ordinary solder
It is best to use only unleaded solder but unleaded solder may
also be added to ordinary solder.

SRF-18
2
SECTION 1
DISASSEMBLY
• This set can be disassembled in the order shown below.
1-1. DISASSEMBLY FLOW
1-2. FRONT CABINET BLOCK
(Page 3)
1-3. MAIN BOARD BLOCK
(Page 4)
SET
1-4. MAIN BOARD
(Page 5)
1-5. KNOB (TUNE)
(Page 6) 1-6. GEAR (VC) (Page 6)

SRF-18
3
Note: Follow the disassembly procedure in the numerical order given.
1-2. FRONT CABINET BLOCK
1 Open the battery case lid.
– Rear bottom view –
2 three screws
(1.7)
9front cabinet block
JIG
When disassembling the unit,
use the following jig.
Part No. Description
9-913-402-33 Tool for Disassembly
3Insert the jig in the space between
the cabinet front assy and the cabinet
rear assy and remove.
4 three claws
4 claw
4 three claws
6 adhesive sheet
– Front top view –
– Front top view –
5Remove all claws while
rounding in outer.
7Lift up the cabinet front assy
in the direction of an arrow.
4 three claws
8 Remove
two solders.
brown
orange
red
blue
speaker (3.6 cm)
speaker (3.6 cm)
8 Remove
two solders.
:ire VettinJ
:ire VettinJ
6 two adhesive
sheets
+
-
+
-

SRF-18
4
qa MAIN board block
5 two screws
(1.7)
5 two screws
(1.7)
5 screw (1.7)
5 screw (1.7)
– Front top view –
– Front top view –
2 knob (power) block
8 holder
(headphone)
battery terminal (+)
4 transparent plate
1 two claws
9 Remove the solder.
MAIN board
:ire VettinJ
6Lift up the holder
(headphone) block.
3Peel off the transparent plate
from adhesive sheet.
3Peel off the transparent plate
from adhesive sheet.
7Remove the battery
terminal (+) in the
direction of an arrow.
0Lift up the MAIN board block
in the direction of an arrow.
knob
(power) switch
(S501)
Note: When installing the knob (power),
the position of switch (S501) and
claw of knob (power) is set and installed.
Note: When installing the transparent plate, the position of
convex part and ditch is set and installed.
ditch
1-3. MAIN BOARD BLOCK

SRF-18
5
1-4. MAIN BOARD
2 knob (band)
qa MAIN board
9 holder (DC)
0 battery terminal (-)
3 pointer
convex part convex part
chassis block chassis block
Knob (tune) is turned until it stops
in the direction of an arrow.
ditch ditch
6chassis block
8 screw (1.7)
5 screw (1.7)
1 two claws
4screw (B)
(1.4 u6)
7 Remove the solder.
3RLQWHULQVWDOODWLRQ
OK NG
guide line guide line
pointer pointer

SRF-18
6
1-5. KNOB (TUNE)
chassis block
cutting
lack
boss
washer
chassis block
tweezers
:DVKHUVHWWLQJ
3 knob (tune)
1 washer
1Cutting lack of a washer is united with boss and
it inserts in the direction of an arrow.
2Washer is moved in the direction of an arrow
with tweezers.
2 gear (midway)
chassis block
1-6. GEAR (VC)
3 MAIN board
2 gear (VC)
boss
gear (VC)
CV101
axis
*HDUVHWWLQJ
1Boss of a gear (VC) checks that it is in a position
as shown in a figure, and attaches to the axis
of CV101.
2Gear (VC) is turned until it stops in the direction
of an arrow.
1screw (M1.7)
Note: Tightening torque (0.07 ±0.005 N·m)

SRF-18
SRF-18
77
SECTION 2
ELECTRICAL ADJUSTMENTS
0 dB = 1 V
FM 2ND OSC ADJUSTMENT
Refer to the connecting location and adjustment location.
Setting:
Band: FM
unit
MAIN board
TP (GND) MAIN board
TP (DET)
MAIN board
TP (FM IN)
MAIN board
TP
(FM 2ND OSC)
FM RF signal
generator
Carrier frequency:
98 MHz
Modulation:
no modulation
Output level:
100 dBPV (100 mV)
0.01 PF1 PF
10 PF
Frequency
conunter
+
+
Procedure:
1. Connect the frequency counter to TP(FM 2ND OSC) as shown
the figure.
2. Tune the unit to 98 MHz.
3. Adjust L102 so that the reading is set to standard value on
frequency counter.
Standard value : 56.5 to 57.0 MHz
[AM]
Setting:
Band: AM
Volume: max
AM RF signal
generator
30% amplitude modulation by 400Hz
signal.
Output level : as low as possible
Put the lead-wire
antenna close to
the set.
[FM]
Setting:
Band: FM
Volume: max
unit
MAIN board
TP (GND)
MAIN board
TP (FM IN)
FM RF signal
generator
22.5 kHz frequency
deviation by
400Hz signal
Output level : as
low as possible
0.06 PF16 :
+
–
ijack (J201)
level meter
• Repeat the procedures in each adjustment several times, and
the tracking adjustments should be finally done by the trimmer
capacitors.
• Remove FM antenna in FM adjustment.
Refer to the connecting location and adjustment location.
AM FREQUENCY COVERAGE ADJUSTMENT
Adjust for a maximum reading on level meter.
L103 520 kHz
CT101-4 1750 kHz
AM TRACKING ADJUSTMENT
Adjust for a maximum reading on level meter.
L105 620 kHz
CT101-3 1400 kHz
FM FREQUENCY COVERAGE ADJUSTMENT
Adjust for a maximum reading on level meter.
L106 86.5 MHz
CT101-1 109.5 MHz
FM TRACKING ADJUSTMENT
Adjust for a maximum reading on level meter.
L101 86.5 MHz
CT101-2 109.5 MHz
FM VCO ADJUSTMENT
Refer to the connecting location and adjustment location.
Setting:
Band: FM
unit
MAIN board
TP (GND) MAIN board
TP (DET)
MAIN board
TP (FM IN) MAIN board TP (VCO)
FM RF signal
generator
Carrier frequency:
98 MHz
Modulation:
no modulation
Output level:
100 dBPV (100 mV)
0.01 PF1 PF
10 PF
Frequency
conunter
+
+
Procedure:
1. Connect the frequency counter to TP (VCO) as shown the fig-
ure.
2. Tune the unit to 98 MHz.
3. Adjust L104 so that the reading is set to standard value on
frequency counter.
Standard value : 37.95 to 38.05 kHz
Connectiong and adjustment location:
– MAIN Board (Component Side) –
– MAIN Board (Conductor Side) –
L104
FM VCO adjustment
L102
FM 2ND OSC
adjustment
L106
FM frequency
coverage
adjustment
L103
AM frequency
coverage
adjustment
CT101-4
(AM OSC)
AM frequency
coverage
adjustment
CT101-1
(FM OSC)
FM frequency
coverage
adjustment
L101
FM tracking
adjustment
L105
AM tracking
adjustment
CT101-3
(AM ANT)
AM tracking
adjustment
CT101-2
(FM ANT)
FM tracking
adjustment
TP
(DET)
TP
(GND)
TP
(VCO)
TP
(FM 2ND OSC)
TP
(FM IN)

SRF-18
SRF-18
88
SECTION 3
DIAGRAMS
For Schematic Diagrams.
Note:
• All capacitors are in μF unless otherwise noted. (p: pF) 50
WV or less are not indicated except for electrolytics and
tantalums.
• All resistors are in Ωand 1/4 W or less unless otherwise
specified.
• C: Panel designation.
THIS NOTE IS COMMON FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS.
(In addition to this, the necessary note is printed in each block.)
• A: B+ Line.
• H: Adjustment for repair.
• Power voltage is dc 3 V and fed with regurated dc power
supply from TP (BATT+) and TP (BATT–) on the MAIN
board.
• Voltages are dc with respect to ground under no-signal
(detuned) conditions.
no mark : FM
( ) : AM
*: Impossible to measure
• Voltages are taken with VOM (Input impedance 10 M).
Voltage variations may be noted due to normal production
tolerances.
• Signal path.
F: FM
f: AM
E: AUDIO IN
For Printed Wiring Boards.
Note:
• X: Parts extracted from the component side.
• Y: Parts extracted from the conductor side.
• W: Indicates side identified with part number.
• : Pattern from the side which enables seeing.
(The other layers’ patterns are not indicated.)
• IC Block Diagrams
– MAIN Board –
IC101 CXA1129N-T4
12 6 8
FM/TV
RFAMP
FM/TV
MIX
FM/TV
1ST LOCAL
OSC
AFC
AM
RFAMP
OVER LOAD
AGC
MIX
1
MIX
2
PSN
1
PSN
2
AGC
AFAMP
LPF DETUNE DET
FM
LPF
AM
BPF
LOCAL
OSC
1/2
COUNTER
FM/TV
SELECT
FM
DISCRI
FM
LIMITTER
AMP
AM IFAMP
(FM TUN IND)
AM
DET
AGC
TUNING
IND
VCO
MUTE
SEP
CONTROL
ST.
DECORDER
INPUT
BUFF
VCO
LEVEL
CONTROL
BUFF
AMP
DC
AMP
PD
SYNC
DET
R CH
AMP L CH
AMP
LOAD
SELECT
1/2
COUNTER
FM/AM
SELECT
M/ST.SW
ST.IND
FM/TV
30 29 25 24 232628 27 22 20
345 7 9 10 11 12 13 14 15
1617181921
FM/AM
FM/TV 38KHz
0
/2
FM/TV
FM/AM
19KHz
/2
19KHz
0
38KHz
FM IN TV IN NC FM RF GAINADJ OLAGC 2ND OSC AM OSC TUN IND PLL1 PLL2 VCO OSC VCO CONT R OUT L OUT
ST IND
PD2 PD1
MPX IN
DET OUT
MUTE
AGC2
NC
FM IF
NC
TV OSC
FM OSC
AGC1
AM IN
NC
IC201 CXA1522N
PRE/POWER 2
PRE/POWER 1
VOLUME
REGULATOR
IN1 REG VOL NF1 GND1 P-GND1 OUT1 VCC
IN2
NC NC
NF2
GND2
P-GND2
OUT2
RIPPLE
16 15 14 13 12 11 10 9
1 2 3 4 5 6 7 8

SRF-18
SRF-18
99
3-1. PRINTED WIRING BOARD • : Uses unleaded solder.
++
+
+
+
+
+
+
+
+
+
C251
R131
R151
R401
J201
R434
C433
R435 C455
C435
R431
R432
C431
R455
R456
C451
C453
R451
R452
JC501
R436
C402
R454 R251
D501
R231
C231
R252
R232
C252
R233
C235
C232
R253
C255
C134 C124
C123
C139
R108
C142
R109
JC101
JC102
C120 C126
R107
C106
C108
L103 C103
C102
BPF101
C105
C111
R104
C110
R103
C136
R102
R201
C202
C201
C127R105
C132
C133
C129
C109
C113
IC101 C135
R351
L104
R331
R106
C116 C117
C114 C115 C112
C204
C237
W501
IC201
C238 C258
C207 C205
R204
S101
R202
R203
C257
R301
R234
R254
R235 R255
R205 C302
C351
R355
C353
R352
R353
R302
R332
R354
R333
C331
R334
C333
R335
TH501
D101
Q431
Q451
Q251
Q231 Q331
Q351
JW112
JW202
JW502
JW501
JW101
JW503
L106
L101
JW106
JW108
JW107
L102
C125
C128
C401
JW102
JW103
C104
JW109
JW110
JW111
C209
C203 JW105
JW104
JW303 JW302
JW301
JW201
R101
SL101
C259
C239
C206
L201
JW304
C301
W201W203
RV201
S501
J401
J301
CT101
CV101
D102
W101
W202W204
1-885-271-
12
(12)
MAIN BOARD
A
A/K
K
ECB
ECB
ECB
ECB
ECB
ECB
AM FM
-1
-1
-2
-2
r
S101
3
2
1
VOL
-1
-1
-4 -2
-3 -1
-2
-4
-3
-2
-4-3
POWER
AUDIO IN
OFF
RADIO
S501
r
r
115
1630
16
18
9
AUDIO IN
AUDIO OUT
TUNING
TP
(VCO)
TP
(GND)
TP
(BATT-) TP
(BATT+)
TP
TP
(DET)
TP
(FM IN)
FM 2ND
OSC
TUNE
NATURAL BLK
RED
DRY BATTERY
SIZE “AA”
(IEC DESIGNATION LR6)
2PCS. 3V
ANT1
FM TELESCOPIC
ANTENNA
L105
AM FERRITE-ROD
ANTENNA
BRN
RED
i
(L-ch) SP1
CABINET (FRONT)
SUBASSY
(R-ch)
BRN
BLU
ORG RED
CT101
-2-4
-1-3
CV101
-2-4
-1-3
A
B
C
D
1 2 3 4 5 6 7 8 9

SRF-18
SRF-18
1010
3-2. SCHEMATIC DIAGRAM • See page 8 for IC Block Diagrams.
IC B/D
IC B/D
TOTAL CURRENT
FM VOLUME MIN: 24mA
AM VOLUME MAX: 22mA
FM VOLUME MIN: 18mA
AUDIO IN: 6mA
FM VOLUME MAX: 38mA
VOLUME MIN: 1.1 1.5 2.9 1.5 1.2 0 VOLUME MAX: 0
0
1.5 1.5 2.6
2.7
1.9
2.5
2.7
1.9
2.5
0.9
0
0.6
0.9
0
0.6
0.3
0
0.3
0.3
0
0.3
FM TRACKING
CT101-2, L101 CT101-4, L103
AM FREQUENCY
COVERAGE
FM 2ND
OSC
FM
VCO
CT101-1, L106
FM FREQUENCY
COVERAGE
AM TRACKING
CT101-3, L105
2.9 2.9 2.9 0 2.9 0 (2.9)  2.7 2.7 2.9 0.5 (0) 0.9 0.9 0
0
2.9
0 (2.9)
2.9 2.9
0 (1.4)
0
0.5 0.4 0.6 2.7
2.7 (2.9)
10p
C103 10p
CV101-2
CT101-2
CV101-4
CT101-4
VCCVCC
C102 2p C106
1500p
C108
JW106
W101
JW107
JW301
JW304
JW108
100p
C105 4700p C112
0.01
C136
2.2k
R102
1.5k
R103
1
C109 0.22 C113
3.3k
R104 1
C111
0.22
C110
L-1154HD
D102
1000p
C135
0
JC102
SL001
GND
JW109
BPF101
BPF I
G
O
MC2837
D101
220p
C134
0
JC101
220p
C123
47p
C124
1
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
FE GND AM RF IN ACCAFC FM 1ST OSC TV 1ST OSC +VCC FM IF GND AGC MUTE DET OUT MPX IN PD1 PD2 ST IND
FM RF IN
TV RF IN
+VDD FE
FM RF
IMAGEADJ
OLAGC
FM 2ND LOCAL
AM OSC
TUN IND
PLL1 PLL2
PLLVCO
VCO CTRL
R CH
L CH
30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
C120 220p
C142
0
R109
330
R108 22p C139
CT101-1 CV101-1
REG
CEN
HOT 1
MPX
(VCO)
TP
JW105
JW110
C129 1 C133
1
-1 -2
-2-1
-4-3
C132
10k JW104
JW102
JW101
JW202
JW502
JW503
JW103
R106
10
R105
1
C127
6.8
C128
10V
100
C125
1
C126
6.3V
IC101
FM/AM RF AMP,
MIX, VCO, MPX
CXA1129N
IC101
4.7
C104
220
R101
25V
2.2
R107
100
R401
0.015
C114
33k
R131
JW111
JW112
33k
R151
1000p
C115 0.015 C116 1000p C117
RCH
RCH
GND GND GND GND
HPL
SPL
HPR
SPR
GND
LOUT
ROUT
LCH
RCH
LCH
GND
LCH
220k
R451
220k
R452
220k
R431
220k
R432
100k
R435
DSC500100L
Q431
L_IN
GND
R_IN
AUDIO IN
J401
4700p
C431 4700p C451 0.01 C402
10
R436 10 R456
2.2k
R434 2.2k R454
1
C453
1
C433
100k
R455
DSC500100L
Q451
1
C455
1
C435
22
C401
10V
OFF
AUDIO IN
RADIO
1
C251
1
C231
100
R301
JW303
15k
R351
68k
R333
DSC500100L
Q331 LINEAMP
Q331, 351
1
C331
JW302
15k
R331
22
C301 0.01 C302
10V
22
C201 1 C202 47 R231
47k
R252
2.2k
R253 1 C252
1
C255
DSC500100L
Q251
LINEAMP
Q231, 251
47
R251
10V
IC201
POWERAMP
CXA1522N
IC201
12345678
IN 2 L NC NC NF 2 GND PGND 2 OUT2 RIPPLE
IN 1 R
REG
VOL
NF 1
GND
PGND 1
OUT1
VCC
16 15 14 13 12 11 10 9
22
C203
10V C204 1C257 1
TP (BATT–)
GND
TP (BATT+)
0
JC501
TH501 JW501
1N4002-B5
D501
2.2k
R233 1 C232
DSC500100L
Q231 1
C235
1
C258
1
C238
1
C205 2.2k R204
2.2k
R202
0
R302
0
R335
0
R355
1
C333
1
C353
0
R203
22
C209
1
C237
10V
470
C206
38uH
L201
JW201
4V
220
C259
4V
220
C239
4V
1
AMP VCC
C207
150
R254 0 R255
150
R234 0 R235
(L-ch)
(R-ch)
0
R205
47k
R232
J201
AUDIO OUT
J301
2.2k
R332 2.2k R352
22
R334 22 R354
68k
R353
DSC500100L
Q351
1
C351
MAIN BOARD
VOL
50k
1
3
2RV201
W203SPR
W204SPRG
W201SPL
W202SPLG
SIZE “AA”
DRY BATTERY
(IEC DESIGNATION LR6)
2PCS. 3V
LINEAMP
Q431, 451
FM TELESCOPIC
ANTENNA
ANT1
FERRITE-ROD
ANTENNA
AM
L105
FM
S101
AM
FM
TP
OSC
2ND
TUNE
TUNING
CV101
POWER
S501
1311 16
A
3171086
I
E
2 9
G
D
5
J
B
C
7
F
14 151412
H
CV101-3
CT101-3
100
R201
(FRONT)
CABINET
SP1
SUBASSY
(GND)
TP
FM 1st OSC
L106
(DET)
TP
(FM_IN)
TP
VCO
L104
FM
L102
OSC
2nd
AM OSC
L103
FM RF
L101

11
SRF-18
SECTION 4
EXPLODED VIEWS
1 3-846-310-21 SPACER
2 4-412-614-01 ADHESIVE SHEETA
3 3-252-825-01 SCREW (1.7)
4 4-294-737-01 HOLDER (HEADPHONE) (for BLACK)
4 4-294-737-11 HOLDER (HEADPHONE) (for WHITE)
4 4-294-737-21 HOLDER (HEADPHONE) (for PINK)
5 4-294-741-01 TERMINAL (+) BATTERY
6 4-294-740-31 PLATE TRANSPARENT (for BLACK)
6 4-294-740-41 PLATE TRANSPARENT (for WHITE)
6 4-294-740-51 PLATE TRANSPARENT (for PINK)
7 4-412-613-01 SPACERA
8 4-294-733-01 KNOB (POWER) (for BLACK)
8 4-294-733-11 KNOB (POWER) (for WHITE)
8 4-294-733-21 KNOB (POWER) (for PINK)
9 3-252-825-01 SCREW (1.7) (for WHITE, PINK)
9 3-252-825-11 SCREW (1.7) (for BLACK)
10 4-294-732-01 KNOB (BAND) (for BLACK)
10 4-294-732-11 KNOB (BAND) (for WHITE)
10 4-294-732-21 KNOB (BAND) (for PINK)
SP1 X-2584-348-1 CABINET (FRONT) SUB ASSY
(Including SPEAKER (3.6 cm)) (for BLACK)
SP1 X-2584-349-1 CABINET (FRONT) SUB ASSY
(Including SPEAKER (3.6 cm)) (for WHITE)
SP1 X-2584-350-1 CABINET (FRONT) SUB ASSY
(Including SPEAKER (3.6 cm)) (for PINK)
Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark
Note:
• -XX and -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 ser-
vice. Some delay should be anticipated
when ordering these items.
• The mechanical parts with no reference
number in the exploded views are not sup-
plied.
• Color Indication of Appearance Parts Ex-
ample:
KNOB, BALANCE (WHITE) . . . (RED)

Parts Color Cabinet’s Color
4-1. FRONT CABINET SECTION
chassis section
4
3
2
38
1
9
7
rear cabinet section
5
6
not supplied
not supplied
not supplied
not
supplied
10
SP1

12
SRF-18
4-2. CHASSIS SECTION
51 4-294-739-01 POINTER
52 4-294-730-02 CHASSIS
53 4-294-736-01 GEAR (MIDWAY)
54 4-294-734-01 KNOB (TUNE) (for BLACK)
54 4-294-734-11 KNOB (TUNE) (for WHITE)
54 4-294-734-21 KNOB (TUNE) (for PINK)
55 3-877-234-01 WASHER
56 2-582-365-01 CUSHION (BUTTON)
57 A-1861-503-A MAIN BOARD, COMPLETE
58 4-294-731-02 HOLDER (FERRITE-RODANTENNA)
59 3-318-201-61 SCREW (B) (1.4X6),TAPPING
60 3-252-825-01 SCREW (1.7)
61 4-294-742-01 TERMINAL(–) BATTERY
62 4-294-738-01 HOLDER (DC) (for BLACK)
62 4-294-738-11 HOLDER (DC) (for WHITE)
62 4-294-738-21 HOLDER (DC) (for PINK)
63 3-254-148-01 SCREW (M1.7)
64 4-294-735-01 GEAR (VC)
D102 6-501-544-01 LED L-1154HD (TUNE)
L105 1-460-469-11 BARANTENNACOIL(AM)
Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark
58
60
61
57
63
52
55
56 54
53
62
51
64 60
60
59
MAIN
board
D102
L105

13
SRF-18
4-3. REAR CABINET SECTION
101 4-142-818-01 BATTERYTERMINAL+– (A)
102 3-014-055-01 FOOT, RUBBER
103 4-294-727-32 CABINETREAR (for BLACK)
103 4-294-727-42 CABINETREAR (for WHITE)
103 4-294-727-52 CABINETREAR (for PINK)
104 4-294-728-01 LID, BATTERY CASE (for BLACK)
104 4-294-728-11 LID, BATTERY CASE (for WHITE)
104 4-294-728-21 LID, BATTERY CASE (for PINK)
105 2-596-904-01 CUSHION (LEVER)
106 3-245-709-11 SCREW (for BLACK)
106 3-245-709-31 SCREW (for WHITE, PINK)
ANT1 1-501-247-61 ANTENNA, TELESCOPIC (FM)
#1 7-623-507-01 LUG, 2.6
Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark
102
106
101
103
102
104
105
ANT1
#1
not
supplied

14
SRF-18 SECTION 5
ELECTRICAL PARTS LIST
A-1861-503-A MAIN BOARD, COMPLETE
********************
3-252-825-01 SCREW (1.7)
3-254-148-01 SCREW (M1.7)
4-294-731-02 HOLDER (FERRITE-RODANTENNA)
4-294-735-01 GEAR (VC)
< BAND PASS FILTER >
BPF101 1-236-711-21 FILTER, BAND PASS
< CAPACITOR >
C102 1-162-915-11 CERAMIC CHIP 10PF 0.5PF 50V
C103 1-162-915-11 CERAMIC CHIP 10PF 0.5PF 50V
C104 1-126-794-11 ELECT 4.7uF 20% 50V
C105 1-162-927-11 CERAMIC CHIP 100PF 5% 50V
C106 1-162-907-11 CERAMIC CHIP 2PF 0.25PF 50V
C108 1-112-514-91 CERAMIC CHIP 1500PF 5% 50V
C109 1-115-156-11 CERAMIC CHIP 1uF 10V
C110 1-127-715-11 CERAMIC CHIP 0.22uF 10% 16V
C111 1-115-156-11 CERAMIC CHIP 1uF 10V
C112 1-114-371-91 CERAMIC CHIP 0.0047uF 5% 50V
C113 1-127-715-11 CERAMIC CHIP 0.22uF 10% 16V
C114 1-164-245-11 CERAMIC CHIP 0.015uF 10% 25V
C115 1-162-964-11 CERAMIC CHIP 0.001uF 10% 50V
C116 1-164-245-11 CERAMIC CHIP 0.015uF 10% 25V
C117 1-162-964-11 CERAMIC CHIP 0.001uF 10% 50V
C120 1-115-156-11 CERAMIC CHIP 1uF 10V
C123 1-164-230-11 CERAMIC CHIP 220PF 5% 50V
C124 1-162-923-11 CERAMIC CHIP 47PF 5% 50V
C125 1-126-382-11 ELECT 100uF 20% 16V
C126 1-115-156-11 CERAMIC CHIP 1uF 10V
C127 1-115-156-11 CERAMIC CHIP 1uF 10V
C128 1-124-239-00 ELECT 6.8uF 20% 10V
C129 1-115-156-11 CERAMIC CHIP 1uF 10V
C132 1-115-156-11 CERAMIC CHIP 1uF 10V
C133 1-115-156-11 CERAMIC CHIP 1uF 10V
C134 1-164-230-11 CERAMIC CHIP 220PF 5% 50V
C135 1-162-964-11 CERAMIC CHIP 0.001uF 10% 50V
C136 1-162-970-11 CERAMIC CHIP 0.01uF 10% 25V
C139 1-162-919-11 CERAMIC CHIP 22PF 5% 50V
C142 1-164-230-11 CERAMIC CHIP 220PF 5% 50V
C201 1-126-514-11 ELECT 22uF 20% 16V
C202 1-115-156-11 CERAMIC CHIP 1uF 10V
C203 1-126-514-11 ELECT 22uF 20% 16V
C204 1-115-156-11 CERAMIC CHIP 1uF 10V
C205 1-115-156-11 CERAMIC CHIP 1uF 10V
C206 1-128-110-11 ELECT 470uF 20% 4V
C207 1-115-156-11 CERAMIC CHIP 1uF 10V
C209 1-126-514-11 ELECT 22uF 20% 16V
C231 1-115-156-11 CERAMIC CHIP 1uF 10V
C232 1-115-156-11 CERAMIC CHIP 1uF 10V
C235 1-115-156-11 CERAMIC CHIP 1uF 10V
C237 1-165-908-11 CERAMIC CHIP 1uF 10% 10V
C238 1-115-156-11 CERAMIC CHIP 1uF 10V
C239 1-126-781-11 ELECT 220uF 20% 4V
C251 1-115-156-11 CERAMIC CHIP 1uF 10V
C252 1-115-156-11 CERAMIC CHIP 1uF 10V
C255 1-115-156-11 CERAMIC CHIP 1uF 10V
C257 1-165-908-11 CERAMIC CHIP 1uF 10% 10V
C258 1-115-156-11 CERAMIC CHIP 1uF 10V
C259 1-126-781-11 ELECT 220uF 20% 4V
C301 1-126-514-11 ELECT 22uF 20% 16V
C302 1-162-970-11 CERAMIC CHIP 0.01uF 10% 25V
C331 1-115-156-11 CERAMIC CHIP 1uF 10V
C333 1-115-156-11 CERAMIC CHIP 1uF 10V
C351 1-115-156-11 CERAMIC CHIP 1uF 10V
C353 1-115-156-11 CERAMIC CHIP 1uF 10V
C401 1-126-514-11 ELECT 22uF 20% 16V
C402 1-162-970-11 CERAMIC CHIP 0.01uF 10% 25V
C431 1-162-968-11 CERAMIC CHIP 0.0047uF 10% 50V
C433 1-115-156-11 CERAMIC CHIP 1uF 10V
C435 1-115-156-11 CERAMIC CHIP 1uF 10V
C451 1-162-968-11 CERAMIC CHIP 0.0047uF 10% 50V
C453 1-115-156-11 CERAMIC CHIP 1uF 10V
C455 1-115-156-11 CERAMIC CHIP 1uF 10V
< VARIABLE CAPACITOR >
CT101 1-141-709-11 CAP, VAR
CV101 1-141-709-11 CAP, VAR (TUNING)
< DIODE >
D101 6-501-579-01 DIODE MC2837
D102 6-501-544-01 LED L-1154HD (TUNE)
D501 6-501-582-01 DIODE 1N4002-B5
< IC >
IC101 8-753-356-41 IC CXA1129N-T4
IC201 8-752-065-32 IC CXA1522N
< JACK >
J201 1-815-325-11 JACK (i)
J301 1-563-857-91 JACK, HEADPHONE (AUDIO OUT)
J401 1-563-857-91 JACK, HEADPHONE (AUDIO IN)
Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark
MAIN
When indicating parts by reference num-
ber, please include the board name.
Note:
• Due to standardization, replacements in
the parts list may be different from the
parts specified in the diagrams or the com-
ponents used on the set.
• -XX and -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 ser-
vice. Some delay should be anticipated
when ordering these items.
• RESISTORS
All resistors are in ohms.
METAL: Metal-film resistor.
METAL OXIDE: Metal oxide-film resistor.
F: nonflammable
• CAPACITORS
uF: μF
• COILS
uH: μH
• SEMICONDUCTORS
In each case, u: μ, for example:
uA. . : μA. . , uPA. . , μPA. . ,
uPB. . : μPB. . , uPC. . , μPC. . ,
uPD. . : μPD. .

Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark
SRF-18
1515
< JUMPER RESISTOR >
JC101 1-216-864-11 SHORT CHIP 0
JC102 1-216-864-11 SHORT CHIP 0
JC501 1-216-864-11 SHORT CHIP 0
< COIL >
L101 1-428-309-11 COIL,AIR-CORE
L102 1-409-991-11 COIL,AIR-CORE
L103 1-460-527-11 COIL, OSCILLATION (AM)
L104 1-460-526-11 COIL, OSCILLATION (VCO)
L105 1-460-469-11 BARANTENNACOIL(AM)
L106 1-460-515-11 COIL,AIR-CORE
L201 1-410-294-41 INDUCTOR 38uH
< TRANSISTOR >
Q231 6-552-408-01 TRANSISTOR DSC500100L
Q251 6-552-408-01 TRANSISTOR DSC500100L
Q331 6-552-408-01 TRANSISTOR DSC500100L
Q351 6-552-408-01 TRANSISTOR DSC500100L
Q431 6-552-408-01 TRANSISTOR DSC500100L
Q451 6-552-408-01 TRANSISTOR DSC500100L
< RESISTOR >
R101 1-216-813-11 METALCHIP 220 5% 1/10W
R102 1-216-825-11 METALCHIP 2.2K 5% 1/10W
R103 1-216-823-11 METALCHIP 1.5K 5% 1/10W
R104 1-216-827-11 METALCHIP 3.3K 5% 1/10W
R105 1-216-797-11 METALCHIP 10 5% 1/10W
R106 1-216-833-11 METALCHIP 10K 5% 1/10W
R107 1-216-789-11 METALCHIP 2.2 5% 1/10W
R108 1-216-815-11 METALCHIP 330 5% 1/10W
R109 1-216-864-11 SHORT CHIP 0
R131 1-216-839-11 METALCHIP 33K 5% 1/10W
R151 1-216-839-11 METALCHIP 33K 5% 1/10W
R201 1-216-809-11 METALCHIP 100 5% 1/10W
R202 1-216-825-11 METALCHIP 2.2K 5% 1/10W
R203 1-216-864-11 SHORT CHIP 0
R204 1-216-825-11 METALCHIP 2.2K 5% 1/10W
R205 1-216-864-11 SHORT CHIP 0
R231 1-216-805-11 METALCHIP 47 5% 1/10W
R232 1-216-841-11 METALCHIP 47K 5% 1/10W
R233 1-216-825-11 METALCHIP 2.2K 5% 1/10W
R234 1-216-811-11 METAL CHIP 150 5% 1/10W
R235 1-216-864-11 SHORT CHIP 0
R251 1-216-805-11 METALCHIP 47 5% 1/10W
R252 1-216-841-11 METALCHIP 47K 5% 1/10W
R253 1-216-825-11 METALCHIP 2.2K 5% 1/10W
R254 1-216-811-11 METAL CHIP 150 5% 1/10W
R255 1-216-864-11 SHORT CHIP 0
R301 1-216-809-11 METALCHIP 100 5% 1/10W
R302 1-216-864-11 SHORT CHIP 0
R331 1-216-835-11 METALCHIP 15K 5% 1/10W
R332 1-216-825-11 METALCHIP 2.2K 5% 1/10W
R333 1-216-843-11 METALCHIP 68K 5% 1/10W
R334 1-216-801-11 METALCHIP 22 5% 1/10W
R335 1-216-864-11 SHORT CHIP 0
R351 1-216-835-11 METALCHIP 15K 5% 1/10W
R352 1-216-825-11 METALCHIP 2.2K 5% 1/10W
R353 1-216-843-11 METALCHIP 68K 5% 1/10W
R354 1-216-801-11 METALCHIP 22 5% 1/10W
R355 1-216-864-11 SHORT CHIP 0
R401 1-216-809-11 METALCHIP 100 5% 1/10W
R431 1-216-849-11 METALCHIP 220K 5% 1/10W
R432 1-216-849-11 METALCHIP 220K 5% 1/10W
R434 1-216-825-11 METALCHIP 2.2K 5% 1/10W
R435 1-216-845-11 METALCHIP 100K 5% 1/10W
R436 1-216-797-11 METALCHIP 10 5% 1/10W
R451 1-216-849-11 METALCHIP 220K 5% 1/10W
R452 1-216-849-11 METALCHIP 220K 5% 1/10W
R454 1-216-825-11 METALCHIP 2.2K 5% 1/10W
R455 1-216-845-11 METALCHIP 100K 5% 1/10W
R456 1-216-797-11 METALCHIP 10 5% 1/10W
< VARIABLE RESISTOR >
RV201 1-227-617-11 RES, VAR, CARBON 50K (VOL)
< SWITCH >
S101 1-572-552-41 SWITCH, SLIDE (FM, AM)
S501 1-786-936-21 SWITCH, SLIDE (POWER)
< THERMISTOR >
TH501 1-805-671-11 THERMISTOR (POSITIVE)
*************************************************************
MISCELLANEOUS
**************
ANT1 1-501-247-61 ANTENNA, TELESCOPIC (FM)
SP1 X-2584-348-1 CABINET (FRONT) SUB ASSY
(Including SPEAKER (3.6 cm)) (for BLACK)
SP1 X-2584-349-1 CABINET (FRONT) SUB ASSY
(Including SPEAKER (3.6 cm)) (for WHITE)
SP1 X-2584-350-1 CABINET (FRONT) SUB ASSY
(Including SPEAKER (3.6 cm)) (for PINK)
*************************************************************
ACCESSORIES
************
1-839-478-21 CORD (WITH PLUG) (Audio connecting cable
(stereo mini plug ystereo mini plug))
4-297-963-21 MANUAL, INSTRUCTION (ENGLISH, SPANISH,
TRADITIONALCHINESE, KOREAN)
MAIN
Ver. 1.1

SRF-18
REVISION HISTORY
Checking the version allows you to jump to the revised page.
Also, clicking the version at the top of the revised page allows you to jump to the next revised page.
Ver. Date Description of Revision
1.0 2012.02 New
1.1 2012.03 Addition of Mexican and Taiwan models
Change of Part No. for L103, L104 on MAIN board (SMR-11066)