索尼SONY WM-FX488电路图
WM-FX488
SERVICE MANUAL
SPECIFICATIONS
E Model
Chinese Model
Model Name Using Similar Mechanism
NEW
MD Mechanism Type
MF-WMFX488-114
9-874-239-02
2003A0200-1
© 2003.01
Sony Corporation
Personal Audio Company
Published by Sony Engineering Corporation
RADIO CASSETTE PLAYER
• Frequency range
FM: 87.5 - 108 MHz
AM: 531 - 1602 kHz (9kHz step)
AM: 530 - 1710 kHz (10kHz step)
• Power requirements
1.5V DC, battery AA (R6) x 1
• Dimensions (w /h/d)
Appr ox. 83.6 x 112.0 x 28.3 mm (3 3⁄8 × 4 1⁄2 × 1 1⁄8 inches)
excl. projecting parts and controls
• Mass
Appr ox. 138 g (4.9 oz) (main unit only)
• Supplied accessories
Stereo headphones or Stereo earphones (1)
Carrying case with belt clip(1)
Design and specifications are subject to change without notice.
Battery life* (approximate hours)
Sony alkaline LR6 (SG)** Sony R6P (SR)
Tape playback
35
9
Radio reception
40
14
* Measured value by the standard of JEITA (Japan Electr onics
and Information Technology Industries Association). (Using
a Sony HF series cassette tape)
**When using a Sony LR6(SG) “ST AMINA” alkaline dry
battery (produced in Japan).
Note
• The battery life may be shorter depending on the operating
condition, the surrounding temperature and battery type.
Ver 1.1 2003.01
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WM-FX488
Specifications ........................................................................... 1
1.
GENERAL ...................................................................... 2
2.
DISASSEMBLY
2-1. Cabinet (Front), Cabinet (Center)............................... 3
2-2. Main Board ................................................................. 3
2-3. Mechanism Deck ........................................................ 4
2-4. Belt, Capstan/reel Motor (M601),
Magnetic Head (Playback) (HP601) ........................... 4
2-5. Holder, Cassette .......................................................... 5
3.
ADJUSTMENTS
3-1. Mechanical Adjustments............................................. 6
3-2. Electrical Adjustments ................................................ 6
4.
DIAGRAMS
4-1. Explanation of IC Terminals....................................... 9
4-2. Block Diagram.......................................................... 10
4-3. Printed Wiring Boards ...............................................11
4-4. Schematic Diagram – Main Section (1/3) – ............. 12
4-5. Schematic Diagram – Main Section (2/3) – ............. 13
4-6. Schematic Diagram – Main Section (3/3) – ............. 14
4-7. IC Block Diagrams ................................................... 15
5.
EXPLODED VIEWS
5-1. Cabinet Section ......................................................... 17
5-2. Mechanism Deck Section
(MF-WMFX488-114) ....................... 18
6.
ELECTRICAL PARTS LIST ................................... 19
Flexible Circuit Board Repairing
• Keep the temperature of the 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.
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.
TABLE OF CONTENTS
SECTION 1
GENERAL
N PLAY**
M
m
VOL*
MODEs/d
i
xSTOP
DIRY
ENTER
AM
FM
RADIO OFF
HOLD
MENU
SET
PRESET/TUNING
+/–
* There is a tactile dot beside VOL on the main unit to show the direction to turn up the volume.
** The button has a tactile dot.
This section is extracted from
instruction manual.
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WM-FX488
SECTION 2
DISASSEMBLY
Note : Follow the disassembly procedure in the numerical order given.
2-1. CABINET (FRONT), CABINET (CENTER)
2-2. MAIN BOARD
z The equipment can be removed using the following procedure.
Main board
Cabinet (center)
Holder, Cassette
Mechanism deck
Belt, Capstan/reel motor (M601)
Magnetic head (playback) (HP601)
Set
Cabinet (front)
Cabinet (front)
Cabinet (center)
Holder, Cassette
4 Claws
2
5
1 Claws
1 Claws
3 Claws
1 Claws
Main board
4 Screw (M1.4 WH)
5 Screw
S701
Hold knob
Head flexible board
1 Remove solder (six places)
2 Remove solder (four places)
3 Lid, battery case
6
z CAUTIONS DURING ASSEMBLY
Align position of S701 and hold knob
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WM-FX488
2-3. MECHANISM DECK
2-4. BELT,CAPSTAN/REEL MOTOR (M601), MAGNETIC HEAD (PLAYBACK) (HP601)
Mechanism deck
Cabinet (center)
1 Claws
2
Wheel ASSY (P), capstan
Wheel ASSY (P), capstan
Belt
• How to apply the belt
Capstan/reel motor
(M601)
1 Belt
5 Magnetic head
(PLAYBACK)
(HP601)
3 Capstan/reel motor
(M601)
4 Two screws (M1.4)
2 Two screws (M1.4)
Mechanism deck
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WM-FX488
1
Insert the spring (torsion) to the slot as shown in the figure.
2,3 Insert the hinge of the “ Holder cassette ”.
4
Close the “Holder, cassette” then press it.
2-5. “HOLDER, CASSETTE’’
z CAUTIONS DURING ASSEMBLY
Holder, Cassete
1
5
Hinge
Hinge
Hinge
Projection
Hinge
Projection
3 Move the hinge away
from projection
2 Move the hinge away
from projection
4 Spring (torsion)
2 Spring (torsion)
Spring
2 Hinge
3 Hinge
Holder, cassette
4
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WM-FX488
3-1. MECHANICAL ADJUSTMENTS
PRECAUTION
1. Clean the following parts with a denatured-alcohol-moistened
swab :
playback head
pinch roller
capstan
rubber belt
2. Demagnetize the playback head with a head demagnetizer.
Do not use a magnetized screwdriver for the adjustments.
3. These measurement and adjustment should be performed with
the rated power supply voltage (1.3 V) unless otherwise noted.
Torque Measurement
Mode
Torque meter
Meter reading
FWD
1.97 – 4.11 mN • m
20 – 42 g • cm
(0.28 – 0.58 oz• inch)
FWD
CQ-102C
less than 0.19 mN • m
less than 2 g • cm
back tension
(less than 0.027 oz• inch)
1.97 – 4.11 mN • m
REV
20 – 42 g • cm
(0.28 – 0.58 oz• inch)
REV
CQ-102RC
less than 0.19 mN • m
less than 2 g • cm
back tension
(less than 0.027 oz• inch)
FF, REW
CQ-201B
more than 5.89 mN • m
more than 60 g • cm
(more than 0.84 oz• inch)
SECTION 3
ADJUSTMENTS
3-2. ELECTRICAL ADJUSTMENTS
PRECAUTION
•
Supplied voltage : 1.3V.
•
Switch and control position (MENU display)
MEGA BASS : OFF
VOLUME control (RV301) : maximum
AVLS : OFF (No indicated)
FM MODE : STEREO (No indicated)
TAPE SECTION
Test Tape
Type
Signal
Used for
WS-48A
3kHz, 0dB
Tape Speed Adjustment
Tape Speed Adjustment
Procedure :
1. Playback WS-48A (tape center part) in the FWD state and ad-
just RV601 so that the frequency counter reading becomes
3,000Hz.
Standard value : 2,985–3,015Hz
2. Playback WS-48A (tape center part) in the REV state.
Check that frequency counter reading is within ±1.0% of the
reading of step 1.
Adjustment Location :
0 dB = 0.775V
set
test tape
WS-48A
(3kHz, 0dB)
frequency counter
16 Ω
phones jack (J301)
MAIN BOARD (SIDE B)
RV601 : Tape speed adjustment
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WM-FX488
AM TRACKING ADJUSTMENT
Adjust for a maximum reading on level meter.
L4
621kHz (620kHz)
CT1
1,395kHz (1,400kHz)
FM FREQUENCY COVERAGE CONFIRMATION
Frequency display
Reading on digtal voltmeter
Confirmation
108MHz
Standard value : 8.775 to 8.925V
FM TRACKING ADJUSTMENT
Adjust for a maximum reading on level meter.
L2
87.5MHz
Confirmation
108MHz
TUNER SECTION
AM Section
BAND : AM
FM Section
BAND : FM
( ) : 10kHz step
AM FREQUENCY COVERAGE ADJUSTMENT
Adjust parts
Frequency display
Reading on digtal
voltmeter
L5
531kHz (530kHz)
Standard value : 0.9 – 1.25V
Adjustment Location : Main board (See page 8)
0 dB = 1µV
•
Repeat the procedures in each adjustment several times, and the
frequency coverage and tracking adjustments should be finally
done by the trimmer capacitors.
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.
set
16 Ω
phones jack (J301)
level meter
Frequency Coverage Adjustment
Setting :
CT1
IC1
R11
R16
C1
C3
C10
C12
L1
C5
R1
C44
C2
C15
TP30
D1
C24
C30
R9
R8
R40
C23
1
15
FM RF signal
generator
33.75kHz frequency
deviation by 1kHz signal.
Output level :
as low as possible
TP30
0.01µF
MAIN BOARD
(SIDE A)
IC1
R16
C17
C4
C28
C21
C3
C10
2
L3
D3
R6
C712
C11
TP12(VT)
C18
FB1
16
30
MAIN BOARD
(SIDE A)
TP12 (VT)
digital voltmeter
(DC range)
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WM-FX488
Adjustment Location :
[MAIN BOARD] (SIDE A)
IC1
TP30
TP12
(VT)
L5 : AM Frequency Coverage Adjustment
L2 : FM Tracking Adjustment
L4 : AM Tracking Adjustment
CT1 : AM Tracking Adjustment
TP30 : FM Sgnal input
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9
WM-FX488
Pin No.
Pin name
I/O
Description
SECTION 4
DIAGRAMS
4-1. EXPLANATION OF IC TERMINALS
IC701 TC9329FA-CFX1740 (SYSTEM CONTROL)
1 to 4
COM 1 to 4
O
LCD common drive
5 to 19
S 1 to 15
O
LCD segment drive
20
S0
O
Not used (OPEN)
21 to 22
K01 to 02
O
Key output
23 to 26
K 1 to 4
I
Key input
27
VDD
–
Power supply
28
BEEP
O
Beep signal output
29
FWD/REV CTL
O
FWD/REV head selection output
30
BAND1
O
Tuner mode selection output
31
BAND2
O
Tuner mode selection output
32
AMP CTL
O
Amplifier B+ switch ON/OFF control signal output
33
NC
–
Not used (OPEN)
34
BATT CHECK
I
Battery voltage check terminal
35
IF IN 1
I
Tuner IF frequency input
36
HOLD SW
I
Hold switch input
37
GND
–
Ground
38
OSC IN
I
Tuner OSC frequency input
39
VDD
–
Power supply terminal
40
DO (OT)
O
Tunning data output
41
VREG
–
Capacitor connection terminal
42
IF REQ
O
IF request output for tuner
43
TAPE
I
Tape power switch input
44
RADIO ON
O
Tuner ON/OFF output
45
LOCAL/DX,
O
Tuner sensitivity/tape type selection output
STEREO/MONO
46
FWD/REV SW
I
FWD/REV switch input
47
P-CTL
O
Power switch ON/OFF output
48
MODEL1
I
Distination select terminal
49
MODEL2
I
Distination select terminal
50
PRE CTL
O
PRE mute output
51
MUTE CTL
O
PRE mute signal output
52
MB CTL
O
Megabass control signal output
53
AVLS CTL
O
AVSL control signal output
54
RESET
I
Reset signal input
55
X-OUT
O
System clock output (75kHz)
56
X-IN
I
System clock input (75kHz)
57
GND
–
Ground terminal
58
VDB
–
Capacitor conection terminal
59
C1
–
Capacitor conection terminal
60
C2
–
Capacitor conection terminal
61
VEE
–
Capacitor conection terminal
62
C3
–
Capacitor conection terminal
63
C4
–
Capacitor conection terminal
64
VLCD
–
Capacitor conection terminal
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 Ω and 1/4 W or less unless otherwise specified.
•
f
: internal component.
•
: B+ Line.
• H : adjustment for repair.
• Power voltage is dc 1.5V and fed with regulated dc power supply
from battery terminal.
• Voltages and waveforms are dc with respect to ground under no-
signal (detuned) conditions.
• no mark : FM (RADIO SECTION), PLAY (TAPE SECTION)
(
) : AM
• Voltages are taken with a VOM (Input impedance 10 MΩ).
Voltage variations may be noted due to normal production toler-
ances.
• Waveforms are taken with a oscilloscope.
Voltage variations may be noted due to normal production toler-
ances.
• Circled numbers refer to waveforms.
• Signal path.
F
: FM
f
: AM
E
: PB
• Abbreviation
CH
: Chinese
E
: No indication of country of origin
6E
: Indication of country of origin
Note on Printed Wiring Board
• X : parts extracted from the component side.
•
a
: Through hole.
•
: Pattern from the side which enables seeing.
(The other layers' patterns are not indicated.)
Caution:
Pattern face side:
Parts on the pattern face side seen from the
(Side B)
pattern face are indicated.
Parts face side:
Parts on the parts face side seen from the
(Side A)
parts face are indicated.
• Abbreviation
CH
: Chinese
E
: No indication of country of origin
6E
: Indication of country of origin
z Waveforms
1
IC701 tg
VOLT/DIV : 1V AC
TIME/DIV : 5 µsec
X-OUT
2.9 Vp-p
75 kHz
2
Q401 C
VOLT/DIV : 5V AC
TIME/DIV : 0.2 µsec
16 Vp-p
0.4 µsec
Ver 1.1 2003.01
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10
10
WM-FX488
5
8
12
13
10
29
FM
DET
AM
DET
24
25
28
27
FM
OSC
1/8 or 1/16
AM
MIX
AM
OSC
Q302
REF
Q401
OSC
MUTE
RF & RET
Q701,702
LPF
SW
16
15
14
21
22
19
23
7
26
20
45
30
31
35
38
44
40
53
52
8
29
19
10
22
7
42
26
19 - 5
1 - 4
25
24
23
22
21
36
49
48
54
56
55
28
11
9
12
51
13
29
46
43
34
50
47
32
VDD
VCC
VBAT
Q705
Q704
5
4 OUT
VCC
21
18
30
4
1
5
25
16
16
26
VBAT
VBAT
VCC
W
START
V
U
W
COM
V
U
VCC
L-CH
R-CH
FWD
R-CH
L-CH
REV
3
1
2
DRIVER
CONTROL
PRE
DRIVER
FM MPX
FM/AM/TV
PW SW
10 7
8
VREF
L2
FM-
RF
L2
FM
TRACKING
CT1,L4
AM
TRACKING
L3
FM-
OSC
L5
AM-OSC
L5
AM
FREQUENCY
COVERAGE
L4
AM
BAR ANTENNA
D2
X1
(FM DISC)
D3
QUAD
CT1
D1
AM RF IN
FM/TV OSC
FMRFOUT
IF BAFF
FM
RF IN
FM-
IF IN
DET
OUT
MPX
IN
R-CH
JC2
E, CH
E, CH
6E
AM-
MIX
AM-
IF IN
AM B/P
AM OSC
(VT)
OSC BUFF
CF3
(AM-IF)
D402
VBATT
Q402
Q703
VREF
Q101
Q305
AVLS
IC301
PRE/POWER
AMP
Q201
Q202
Q102
VCC
RF VCC
T401
T401,Q401
DC/DC CONVERTER
INA
INB
RF
OUT
VREF
BASE
VCC
VREF
Q301
INV.
PRE
OUTA
PRE
OUTB
RV301
VOL
R-CH
PW
IN A
PW
IN C
BST OUT
BST SW
PW NFA
PW NFB
OUTA
OUTC
PW MUTE
PRE MUTE
R-CH
MUTE CTL
FWD/REV CTL
FWD/REV SW
BATT CHECK
TAPE
PRE CTL
P-CTL
AMP CTL
Q707
D701
IC701 (2/2)
SYSTEM
CONTROL
IC703
RESET
CF1
(FM IF)
IC1
FM/AM FRONT END
IF DET, FM MPX
IC701 (1/2)
SYSTEM
CONTROL
IC601
CAPSTAN/REEL
MOTOR DRIVE
LOUT
ROUT
LPF1
REQSW
OSC OUT
MODE-1
MODE-2
IF
COUNT
STEREO/MONO,
LOCAL/DX
IFJN1
IF-REQ
BAND1
BAND2
OSCIN
RADIO ON
DO(OT)
AVLS CTL
MB CTL
VDD
VDD
6E
6E
E, CH
VDD
S2
I
S16
COM1
I
COM4
K4
K3
K2
K1
KO2
KO1
HOLD SW
MODE2
MODE1
RESET
X-OUT
X-IN
BEEP
Q303
EQ SWITCH
X701
75KHz
R-CH
R-CH
2
4
FM-
MIX
LCD701
LIQUID
CRYSTAL
DISPLAY
S703
PRESET/TUNING-
RV601
TAPE SPEED
S710
PRESET/TUNING+
S706
ENTER
S707
SET
S707
MENU
S707
FM
S707
RADIO
OFF
S709
AM
S701
HOLD
ON
OFF
IN+
M601
CAPSTAN/REEL
MOTOR
S302
N/R SW
S301
TAPE ON
BATT 1.5V
DRY BATTERY
SIZE"AA"
(IEC DESIGNATION LR6)
1PS,1.5V
HP601
PLAY BACK HEAD
J301
i
FM
MIX
• Signal Path
: FM
: AM
: PB
• R-CH is omitted due to same as L-CH.
4-2. BLOCK DIAGRAMS
Ver 1.1 2003.01
• Abbreviation
CH
: Chinese
E
: No indication of country of origin
6E
: Indication of country of origin
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11
WM-FX488
4-3. PRINTED WIRING BOARDS
Ref. No.
Location
z Semiconductor
Location
D1
A-2
D2
B-9
D3
B-3
D5
A-3
D401
F-2
D402
F-2
D701
G-10
IC1
B-3
IC301
F-8
IC601
G-3
IC701
C-8
IC703
D-4
Q101
E-7
Q102
E-7
Q201
E-8
Q202
E-8
Q301
E-7
Q302
E-9
Q303
F-8
Q305
B-7
Q401
F-2
Q402
F-2
Q701
B-8
Q702
B-8
Q703
E-2
Q704
F-9
Q705
G-2
Q707
G-4
i
W
V
U
COM
M601
CAPSTAN/REEL
MOTOR
HEAD FLEXIBLE
BOARD
L
R
R
L
REV
FWD
HP601
PLAYBACK
HEAD
CT1
IC601
IC1
S301
TAPE ON
C607
C610
C605
C601
R611
R601
R603
C606
C608
C604
C603
C602
R609
R610
R602
IC703
C409
R406
R404
R3
R11
R16
C17
C4
C28
C21
C1
C3
C41
C10
C14
C12
L1
L3
D401
D3
Q707
R715
R701
R331
R332
R719
R718
R720
D402
R405
R403
R506
R703
C330
R6
C712
C11
R113
R213
C331
R330
R311
C316
R732
R731 R733
C732
C309
R305
T401
Q401
R401
C406
R402
C407
C5
C8
R1
C44
R2
C13
JC2
C402
R716
Q703
JC6
C404
C15
E, CH
E, CH
6E
6E
TP30
S701
HOLD
C408
R407
L401
D1
C24
C30
R9
R8
R40
C18
FB1
C306
C700
Q402
R408
R717
Q705
C403
R12
C23
C46
D5
R214
R114
1
10
11
20
1
15
16
30
11
(11)
1-685-793-
MAIN BOARD (SIDE A)
B
ON OFF
t
Q301
Q302
Q701
Q702
C705
IC701
TH601
CN101
Q704
C301
Q202
Q102
Q101
Q201
C324
CF3
D2
IC301
R604
C711
R605
S302
N/R SW
R7
R5
C20
C26
C19
C7
C56
C31
C715
L701
D701
C104
C204
C203
R203
R201
R221
LCD701
R106
R206
C312
C325
C311
C208
C108
R209
R109
R310
C209
C109
C310
C322
C701
C703
C704
JC703
E, CH
6E
JC702
JC701
JC704
6E
C207
C106
C206
R21
R20
R710
R709
R708
R707
R706
R705
C702
C709
C710
C707
C708
TAP1
R711
R18
R702
R714
R17
C706
C713
C36
C714
R111
C101
C201
1
15
16
30
R211
R121
R101
R103
R104
C103
R204
R302
R303
R301
1
6
C107
R207
R208
R108
R107
R205
R105
S706
ENTER
S710
PRESET/TUNING+
S707
SET
S711
MENU
C308
C307
C305
C210
C110
R110
R210
R333
R212
R112
RV601
R4
C16
S702
FM
S709
AM
C304
S704
RADIO OFF
R304
X701
S703
PRESET/TUNING–
C29
C22
Q305
FB301
FB201
FB101
C716
Q303
11
(11)
1-685-793-
C9
C2
C6
L4
L5
CF1
J301
C405
DRY BATTERY
SIZE “AA”
(IEC DESIGNATION LR6)
1PC, 1.5V
C503
C721
C722
RV301
L2
16
1
33
32
17
64
49
48
N
VOL
X1
MAIN BOARD (SIDE B)
1
5
4
3
2
3
4
5
6
7
8
9
10
11
A
1
B
C
D
E
F
G
z Refer to page 9 for Notes.
Ver 1.1 2003.01
w w w
.
x i a o y u 1 6 3 .
c o m
Q Q
3 7 6 3 1 5 1 5 0
9
9
2
8
9
4
2
9
8
T E L
1 3 9 4 2 2 9 6 5 1 3
9
9
2
8
9
4
2
9
8
0
5
1
5
1
3
6
7
3
Q
Q
TEL 13942296513 QQ 376315150 892498299
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12
12
WM-FX488
4-4. SCHEMATIC DIAGRAM – MAIN SECTION (1/3) –
z Refer to page 9 for Notes.
Ver 1.1 2003.01
JC6
R3
C700
C8
R1
C44
C5
C7
C2
R40
C6
C9
CF3
CF1
X1
C15
L1
0.1µH
C10
C28
C21
D3
C18
R6
C29
L5
C30
C23
R8
C24
R9
C31
CT1
L2
C20
C26
D2
R5
FB1
C17
R4
C16
C4
R2
TAP1
C1
R7
JC2
D1
R20
R21
C3
R716
Q703
IC1
C56
C22
L3
C46
R16
R11
R12
D5
C14
C13
C11
C12
C41
0
10k
4p
0.47
1k
0.022
0.047
470p
4.7
16V
0k
22
6.3V
220
4V
0.022
5p
470p
2200p
MA2S357
1p
10k
22p
AM-OSC
470p
0.022
470k
0.022
470k
0.022
10p
FM-RF
2200p
2200p
MA2S357
100k
0.01
4.7k
0.01
0.1
10k
100p
10k
0
SVC347-T-TL
22k
22k
100p
2.2k
2SB815B7
TA2154FN-(EL)
6p
6p
27nH
0.001
0
1k
1k
MA2SP0100LSO
1000p
L OUT
R OUT
IN
OUT C
RF OUT
RADIO ON
GND
BAND1
BAND2
IF-IN
IF-REQ
OSC IN
VT
LOCAL/DX,
*1
*1
*2
*2
AM
ANTENNA
L4
BAR
FM
TRACKING
TRACKING
AM
CT1,L4
FREQUENCY
COVERAGE
L2
RADIO
SWITCH
ON/OFF
FM/AM
FRONT END
IF DET,FM MPX
L5
AM
6E
E,CH
6E
E,CH
*1 C13,14
0.1
0.047
6E
E,CH
*2 C11,12
0.0047
0.01
E,CH
STEREO/MONO
w w w
.
x i a o y u 1 6 3 .
c o m
Q Q
3 7 6 3 1 5 1 5 0
9
9
2
8
9
4
2
9
8
T E L
1 3 9 4 2 2 9 6 5 1 3
9
9
2
8
9
4
2
9
8
0
5
1
5
1
3
6
7
3
Q
Q
TEL 13942296513 QQ 376315150 892498299
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13
13
WM-FX488
R404
R406
R405
C409
D401
C402
C403
C408
D402
R403
C404
C405
R402
C407
C406
R407
R401
L401
22µH
R408
D701
C722
C721
C503
R611
C608
R610
R609
C606
C604
R602
C602
C603
C601
R601
C607
TH601
C610
RV601
R605
R604
C605
R603
Q707
R701
C703
C704
C709
C705
C710
C708
C702
C707
X701
C716
R720
C701
C711
C715
L701
22µH
LCD701
R705
R707
R706
R710
R709
R708
R718
R719
R715
S702
S711
S703
S706
S710
S707
S301
S302
R506
R18
C706
C713
C714
R714
C36
R17
R702
R703
C712
R732
R731
R733
C732
R711
Q701
Q702
T401
Q401
Q704
S701
S704
IC601
M601
IC703
Q402
IC701
Q705
R717
S709
JC701
JC704
JC703
JC702
47k
1k
1k
0.22
MA8120
1000p
2.2
16V
5p
MA111
1k
0.01
22
6.3V
22
0.022
10p
22k
10k
2.2k
1SS367
470
4V
470
4V
220
4V
220k
0.01
220k
220k
0.01
0.1
100
0.1
0.22
1
22k
0.01
3.3K
1
4.7k
2.2k
1k
0.1
10k
2SB815B7
1k
10p
22p
0.1
10
6.3V
0.47
0.1
0.1
0.1
75KHz
2200p
100k
0.47
22
4V
1
LCD1
10k
10k
10k
10k
10k
10k
100k
47k
1k
TAPE ON
N/R SW
100k
0
1
0.01
0.01
10k
0.01
10k
4.7k
100k
0.1
470k
10k
1M
1
10k
2SC4154
LPF
2SC4154
LPF
2SC4154
2SB815B7
MM1279XVBE
CAPSTAN/REEL
MOTOR DRIVER
PST9008NL
RESET
2SB815B7
SWITCH
TC9329FA-CFX1738
2SB815B7
SWITCH
4.7k
PWR MUTE
PRE MUTE
AVLS
MEGA BASS
VCC
BASE
TAPE
BEEP
GND
RADIO ON
OSC IN
IF-REQ
IF-IN
BAND2
BAND1
VT
LOCAL/DX,
SYSTEM
CONTROL
CONVERTER
TAPE SPEED
MOTOR
CAPSTAN/REEL
POWER
SWITCH
DRY BATTERY
SIZE"AA"
(IEC DESIGNATION LR6)
1PC,1.5V
ON
HOLD
OFF
PRESET/TUNING-
PRESET/TUNING+
SET
ENTER
MENU
RADIO OFF
DC/DC
STEREO/MONO
AM
FM
6E
E,CH
E,CH
4-5. SCHEMATIC DIAGRAM – MAIN SECTION (2/3) –
z Refer to page 9 for Notes.
Ver 1.1 2003.01
w w w
.
x i a o y u 1 6 3 .
c o m
Q Q
3 7 6 3 1 5 1 5 0
9
9
2
8
9
4
2
9
8
T E L
1 3 9 4 2 2 9 6 5 1 3
9
9
2
8
9
4
2
9
8
0
5
1
5
1
3
6
7
3
Q
Q
TEL 13942296513 QQ 376315150 892498299
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http://www.xiaoyu163.com
14
14
WM-FX488
C301
R207
R208
R108
R107
R206
C204
C203
R204
R203
R201
R221
R103
R101
R121
C103
R104
C104
R106
C324
C322
C207
C107
R304
Q305
R205
R105
R302
R301
Q301
Q102
Q202
C201
C101
R111
R211
R311
C316
R110
R210
C106
C206
C208
C108
C330
C311
R330
R331
C325
C312
C305
C306
C307
C304
C109
R109
C310
C209
R310
R209
C309
R305
R213
R113
FB201
FB101
C210
C110
R333
FB301
C331
R332
Q101
Q201
R303
C308
IC301
Q302
Q303
J301
RV301
CN101
R112
R114
R214
R212
22
4V
22k
10k
10k
22k
220k
22
4V
4700p
470
470k
10k
22k
470k
10k
22k
4700p
470
22
4V
220k
22
4V
1000p
1
1
1k
XP1116-TX
AVLS CONTROL
SWITCH
100
100
100k
100k
2SC2712
2SA1362-Y
2SA1362-Y
470p
470p
220k
220k
100k
1
1k
1k
1
1
1000p
1000p
1
4.7
1k
1k
2.2
2.2
0.1
2.2
1
10
6.3V
0.22
4.7
0.22
0.22
4.7
4.7
0.1
470k
4.7k
4.7k
0.022
0.022
22
0.047
100k
2SA1362-Y
2SA1362-Y
100k
0.22
TA2160FN(EL)
PRE/POWER
AMP
2SA1362-Y
XP1501
6P
1k
1k
AVLS
R OUT
L OUT
PRE MUTE
PWR MUTE
MEGA BASS
IN
VCC
BASE
TAPE
OUT C
BEEP
RF OUT
GND
*
*
SWITCH
Q101,102,201,202,301
FWD/REV
B+ SWITCH
EQ SWITCH
HEAD
PLAYBACK
HP601
VOL
1
6
6E
E,CH
0
100
*R112,212
4-6. SCHEMATIC DIAGRAM – MAIN SECTION (3/3) –
z Refer to page 9 for Notes.
Ver 1.1 2003.01
w w w
.
x i a o y u 1 6 3 .
c o m
Q Q
3 7 6 3 1 5 1 5 0
9
9
2
8
9
4
2
9
8
T E L
1 3 9 4 2 2 9 6 5 1 3
9
9
2
8
9
4
2
9
8
0
5
1
5
1
3
6
7
3
Q
Q
TEL 13942296513 QQ 376315150 892498299
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15
WM-FX488
4-7. IC BLOCK DIAGRAMS
IC1 TA2154FN (EL)
IC301 TA2160FN (EL)
12
13
14
19
15
FM/TV
MIX
8
9
10
TV RF IN
VCC
FM IF IN
AM IF IN
QUAD
DET OUT
MPX IN
LPF IN
R OUT
GND
1
4
2
3
5
6
FM FR IN
RF GND
FM MIX
AM MIX
AGC
7
AM
MIX
SW
FM/AM/TV
PW SW
1/2
FM
OSC
TV
OSC
1/8 OR
1/16
AM
DET
LEVEL
DET
FM MPX
FM
DET
AM
OSC
AGC
18
17
16
20
TV FM OSC
AM RF IN
OSC OUT
TV RF OUT
FM RF OUT
AM BYPASS
AM OSC
MODE2
MODE1
IF REQ
IF COUNT
LPF2B
LPF2A
L OUT
RFVCC
30
29
27
28
23
24
25
26
22
21
11
BUFF
IF BUFF
BUFF
BUFF
FM IF
AM IF
AF
TV RF
FM RF
12
13
14
19
15
8
9
10
PRE OUT B
BST SW
PW INA
PW NFB
PW INB
PW MUTE
PRE MUTE
AGC DET
PW GND
PW NFA
1
4
2
3
5
6
PRE NFB
PRE NFA
PRE OUT A
VREF
PRE GND
7
RF & REF
BST SW
AGC DET
AGC
18
17
16
20
LPF
VREF IN
BSF NF
IN B
IN A
RF IN
BASE
BST OUT
PW INC
AGC IN
OUT A
OUT C
OUT B
VCC
RF OUT
30
29
27
28
23
24
25
26
22
21
11
PRE B
PRE A
BST
PW A
PW B
PW C
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2
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9
2
8
9
4
2
9
8
0
5
1
5
1
3
6
7
3
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16
WM-FX488
IC601 MM1279XVBE
+
11
13
14
15
16
17
18
20
1
2
3
4
5
6
7
8
9
10
19
12
PRE
DRIVER
SOFT
SWITCH
MOTIVE
LOGIC
MOTIVE
/OSC
BIAS
REFERENCE
VOLTAGE
MOTIVE
CONTROL
CIRCUIT
INVERTER
SPEED
CONTROL
CURRENT
CONTROL
OUTPUT
BIAS
PV
V
PW
W
GND
OSC
DR
VREF
START
VSP
IN+
U
PU
GND
VCC
FC
TC1
TC2
R1
OUT
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2
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2
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8
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9
2
8
9
4
2
9
8
0
5
1
5
1
3
6
7
3
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WM-FX488
17
SECTION 5
EXPLODED VIEWS
NOTE :
• -XX, -X mean standardized parts, so they
may have some difference from the original
one.
• Color indication of Appearance Parts
Example :
KNOB, BALANCE (WHITE) ••• (RED)
↑
↑
Parts color Cabinet's color
• Items marked “ * ”are not stocked since they
are seldom required for routine service. Some
delay should be anticipated when ordering
these items.
• The mechanical parts with no reference number in the
exploded views are not supplied.
• Hardware (# mark) list and accessories and packing
materials are given in the last of this parts list.
•
Abbreviation
CH
: Chinese
E
: No indication of country of origin
6E
: Indication of country of origin
Ref. No.
Part No.
Description
Remark
Ref. No.
Part No.
Description
Remark
5-1. CABINET SECTION
1
6
2
3
4
9
10
18
13
15
16
17
19
20
21
14
11
12
7
8
5
LCD701
Mechanism deck
(MF-WMFX488-114)
L4
1
3-019-859-11 BUTTON (STOP)
2
3-019-860-11 BUTTON (FF)
3
3-019-858-11 BUTTON (PLAY)
4
3-019-861-11 BUTTON (REW)
5
3-245-288-01 KNOB (HOLD)
6
3-245-284-11 CABINET (CENTER)
7
3-245-293-01 SPRING (CASSETTE)
8
3-245-294-01 SPRING (TORSION)
9
3-245-285-01 HOLDER, CASSETTE
10
3-921-955-01 SCREW (M1.4), TOOTH (WH)
* 11
A-3178-912-A MAIN BOARD ASSY (E, CH)
* 11
A-3178-926-A MAIN BOARD ASSY (6E)
12
X-3382-597-1 TERMINAL BOARD ASSY, BATT (+)
13
3-375-114-01 SCREW
14
3-245-287-01 LID, BATTERY CASE
15
3-245-295-01 TERMINAL (-), BATTERY
16
3-245-291-01 RUBBER, CONDUCTOR
17
3-245-292-01 HOLDER, LCD
18
3-245-290-11 BUTTON (FM)
19
3-245-289-01 BUTTON (PRESET), RUBBER
20
3-245-283-11 CABINET (FRONT) (SILVER)
20
3-245-283-21 CABINET (FRONT) (BLUE)
21
3-245-286-01 WINDOW, LCD
L4
1-754-265-11 ANTENNA, FERRITE-ROD
LCD701 1-804-966-11 LCD
Ver 1.1 2003.01
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9
2
8
9
4
2
9
8
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9
2
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9
4
2
9
8
0
5
1
5
1
3
6
7
3
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18
WM-FX488
Ref. No.
Part No.
Description
Remark
Ref. No.
Part No.
Description
Remark
5-2. MECHANISM DECK SECTION
(MF-WMFX488-114)
HP601
M601
not
supplied
not
supplied
not
supplied
101
102
102
103
105
105
106
106
109
112
113
114
115
116
117
118
119
120
121
122
104
108
110
111
not
supplied
not
supplied
not supplied
not
supplied
107
101
X-3378-976-1 LEVER (NL) ASSY, PINCH
102
X-3381-147-1 WHEEL ASSY, CAPSTAN
103
3-704-197-71 SCREW (M1.4)
104
X-3369-748-9 PINCH LEVER (R) ASSY
105
3-024-223-11 GEAR (REEL-2)
106
3-921-797-01 WASHER
107
3-920-993-02 SPRING (NR)
108
3-014-709-01 SPRING (FR LEVER OW)
109
3-938-657-01 BELT
110
X-3380-431-1 CHASSIS (COMP) ASSY (GL-SL)
111
3-013-142-02 SPRING (FR-CP)
112
3-921-053-01 LEVER, D SELECTION
113
X-3376-169-5 CLUTCH ASSY
114
3-920-990-21 SPRING (UD), COMPRESSION
115
3-921-335-03 WASHER, LEVER
116
3-923-530-11 SLEEVE (M)
117
3-728-091-01 WASHER, STOPPER
118
3-921-052-14 LEVER (A), DETECTION
119
3-920-994-11 SPRING (D SELECTION)
120
3-929-419-03 LEVER (BR), DETECTION
121
3-704-197-01 SCREW (M1.4), SPECIAL HEAD
122
3-921-023-01 LEVER, M SELECTION
HP601
1-500-648-12 HEAD, MAGNETIC (PLAYBACK)
M601
1-763-798-11 MOTOR, DC (CAPSTAN/REEL)
(including PULLEY)
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19
WM-FX488
SECTION 6
ELECTRICAL PARTS LIST
MAIN
NOTE :
• Due to standardization, replacements in the
parts list may be different from the parts
specified in the diagrams or the components
used on the set.
• -XX, -X mean standardized parts, so they
may have some difference from the original
one.
• RESISTORS
All resistors are in ohms
METAL : Metal-film resistor
METAL OXIDE :Metal oxide-film resistor
F : nonflammable
• Items marked “ * ”are not stocked since they
are seldom required for routine service. Some
delay should be anticipated when ordering
these items.
• SEMICONDUCTORS
In each case, u : µ , for example :
uA.... : µ A.... , uPA.... : µ PA....
uPB.... : µ PB.... , uPC.... : µ PC....
uPD.... : µ PD....
• CAPACITORS
uF : µ F
• COILS
uH : µ H
When indicating parts by reference num-
ber, please include the board.
Ref. No.
Part No.
Description
Remark
Ref. No.
Part No.
Description
Remark
• Abbreviation
CH
: Chinese
E
: No indication of country of origin
6E
: Indication of country of origin
*
A-3178-912-A MAIN BOARD ASSY (E, CH)
*
A-3178-926-A MAIN BOARD ASSY (6E)
**************
< CAPACITOR >
C1
1-162-927-11 CERAMIC CHIP
100PF
5%
50V
C2
1-124-259-11 ELECT
4.7uF
20%
16V
C3
1-162-927-11 CERAMIC CHIP
100PF
5%
50V
C4
1-107-826-11 CERAMIC CHIP
0.1uF
10%
16V
C5
1-165-176-11 CERAMIC CHIP
0.047uF
10%
16V
C6
1-126-153-11 ELECT
22uF
20%
6.3V
C7
1-164-315-11 CERAMIC CHIP
470PF
5%
50V
C8
1-117-863-11 CERAMIC CHIP
0.47uF
10%
6.3V
C9
1-124-434-00 ELECT
220uF
20%
4V
C10
1-162-910-11 CERAMIC CHIP
5PF
0.25PF 50V
C11
1-162-968-11 CERAMIC CHIP
0.0047uF
10%
50V
(E, CH)
C11
1-162-970-11 CERAMIC CHIP
0.01uF
10%
25V(6E)
C12
1-162-968-11 CERAMIC CHIP
0.0047uF
10%
50V
(E, CH)
C12
1-162-970-11 CERAMIC CHIP
0.01uF
10%
25V(6E)
C13
1-107-826-11 CERAMIC CHIP
0.1uF
10%
16V
(E, CH)
C13
1-165-176-11 CERAMIC CHIP
0.047uF
10%
16V(6E)
C14
1-107-826-11 CERAMIC CHIP
0.1uF
10%
16V
(E, CH)
C14
1-165-176-11 CERAMIC CHIP
0.047uF
10%
16V(6E)
C15
1-164-227-11 CERAMIC CHIP
0.022uF
10%
25V
C16
1-162-970-11 CERAMIC CHIP
0.01uF
10%
25V
C17
1-162-970-11 CERAMIC CHIP
0.01uF
10%
25V
C18
1-162-905-11 CERAMIC CHIP
1PF
0.25PF 50V
C20
1-164-676-11 CERAMIC CHIP
2200PF
5%
16V
C21
1-164-676-11 CERAMIC CHIP
2200PF
5%
16V
C22
1-162-911-11 CERAMIC CHIP
6PF
0.25PF 50V
C23
1-164-227-11 CERAMIC CHIP
0.022uF
10%
25V
C24
1-164-227-11 CERAMIC CHIP
0.022uF
10%
25V
C26
1-164-676-11 CERAMIC CHIP
2200PF
5%
16V
C28
1-164-315-11 CERAMIC CHIP
470PF
5%
50V
C29
1-162-919-11 CERAMIC CHIP
22PF
5%
50V
C30
1-164-315-11 CERAMIC CHIP
470PF
5%
50V
C31
1-164-227-11 CERAMIC CHIP
0.022uF
10%
25V
C36
1-162-970-11 CERAMIC CHIP
0.01uF
10%
25V
C41
1-115-416-11 CERAMIC CHIP
0.001uF
5%
25V
C44
1-164-227-11 CERAMIC CHIP
0.022uF
10%
25V
C46
1-115-416-11 CERAMIC CHIP
0.001uF
5%
25V(6E)
C56
1-162-911-11 CERAMIC CHIP
6PF
0.25PF 50V
C101
1-162-962-11 CERAMIC CHIP
470PF
10%
50V
C103
1-162-968-11 CERAMIC CHIP
0.0047uF
10%
50V
C104
1-104-847-11 TANTAL. CHIP
22uF
20%
4V
C106
1-115-156-11 CERAMIC CHIP
1uF
10V
C107
1-115-156-11 CERAMIC CHIP
1uF
10V
C108
1-115-416-11 CERAMIC CHIP
0.001uF
5%
25V
C109
1-165-128-11 CERAMIC CHIP
0.22uF
16V
C110
1-164-227-11 CERAMIC CHIP
0.022uF
10%
25V
C201
1-162-962-11 CERAMIC CHIP
470PF
10%
50V
C203
1-162-968-11 CERAMIC CHIP
0.0047uF
10%
50V
C204
1-104-847-11 TANTAL. CHIP
22uF
20%
4V
C206
1-115-156-11 CERAMIC CHIP
1uF
10V
C207
1-115-156-11 CERAMIC CHIP
1uF
10V
C208
1-115-416-11 CERAMIC CHIP
0.001uF
5%
25V
C209
1-165-128-11 CERAMIC CHIP
0.22uF
16V
C210
1-164-227-11 CERAMIC CHIP
0.022uF
10%
25V
C301
1-104-847-11 TANTAL. CHIP
22uF
20%
4V
C304
1-135-259-11 TANTAL. CHIP
10uF
20%
6.3V
C305
1-107-826-11 CERAMIC CHIP
0.1uF
10%
16V
C306
1-125-838-11 CERAMIC CHIP
2.2uF
10%
6.3V
C307
1-125-837-91 CERAMIC CHIP
1uF
10%
6.3V
C308
1-115-467-11 CERAMIC CHIP
0.22uF
10%
10V
C309
1-164-360-11 CERAMIC CHIP
0.1uF
16V
C310
1-165-128-11 CERAMIC CHIP
0.22uF
16V
C311
1-117-720-11 CERAMIC CHIP
4.7uF
10V
C312
1-125-838-11 CERAMIC CHIP
2.2uF
10%
6.3V
C316
1-115-156-11 CERAMIC CHIP
1uF
10V
C322
1-115-416-11 CERAMIC CHIP
0.001uF
5%
25V
C324
1-104-847-11 TANTAL. CHIP
22uF
20%
4V
C325
1-125-838-11 CERAMIC CHIP
2.2uF
10%
6.3V
C330
1-125-837-91 CERAMIC CHIP
1uF
10%
6.3V
C331
1-165-176-11 CERAMIC CHIP
0.047uF
10%
16V
C402
1-162-964-11 CERAMIC CHIP
0.001uF
10%
50V
C403
1-164-505-91 CERAMIC CHIP
2.2uF
16V
C404
1-162-974-11 CERAMIC CHIP
0.01uF
50V
C405
1-126-153-11 ELECT
22uF
20%
6.3V
C406
1-162-915-11 CERAMIC CHIP
10PF
0.5PF
50V
C407
1-162-995-11 CERAMIC CHIP
0.022uF
50V
C408
1-162-910-11 CERAMIC CHIP
5PF
0.25PF 50V
C409
1-115-467-11 CERAMIC CHIP
0.22uF
10%
10V
C503
1-124-434-00 ELECT
220uF
20%
4V
C601
1-125-837-91 CERAMIC CHIP
1uF
10%
6.3V
C602
1-107-826-11 CERAMIC CHIP
0.1uF
10%
16V
C603
1-115-467-11 CERAMIC CHIP
0.22uF
10%
10V
C604
1-164-156-11 CERAMIC CHIP
0.1uF
25V
C605
1-107-826-11 CERAMIC CHIP
0.1uF
10%
16V
C606
1-162-970-11 CERAMIC CHIP
0.01uF
10%
25V
C607
1-162-970-11 CERAMIC CHIP
0.01uF
10%
25V
C608
1-162-970-11 CERAMIC CHIP
0.01uF
10%
25V
C610
1-115-156-11 CERAMIC CHIP
1uF
10V
C700
1-162-915-11 CERAMIC CHIP
10PF
0.5PF
50V
C701
1-117-863-11 CERAMIC CHIP
0.47uF
10%
6.3V
C702
1-107-826-11 CERAMIC CHIP
0.1uF
10%
16V
C703
1-162-915-11 CERAMIC CHIP
10PF
0.5PF
50V
Ver 1.1 2003.01
www. xiaoyu163. com
QQ 376315150
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TEL 13942296513 QQ 376315150 892498299
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http://www.xiaoyu163.com
20
WM-FX488
Ref. No.
Part No.
Description
Remark
Ref. No.
Part No.
Description
Remark
MAIN
C704
1-162-919-11 CERAMIC CHIP
22PF
5%
50V
C705
1-135-259-11 TANTAL. CHIP
10uF
20%
6.3V
C706
1-125-837-91 CERAMIC CHIP
1uF
10%
6.3V
C707
1-107-826-11 CERAMIC CHIP
0.1uF
10%
16V
C708
1-107-826-11 CERAMIC CHIP
0.1uF
10%
16V
C709
1-107-826-11 CERAMIC CHIP
0.1uF
10%
16V
C710
1-117-863-11 CERAMIC CHIP
0.47uF
10%
6.3V
C711
1-104-847-11 TANTAL. CHIP
22uF
20%
4V
C712
1-162-970-11 CERAMIC CHIP
0.01uF
10%
25V
C713
1-162-970-11 CERAMIC CHIP
0.01uF
10%
25V
C714
1-162-970-11 CERAMIC CHIP
0.01uF
10%
25V
C715
1-125-837-91 CERAMIC CHIP
1uF
10%
6.3V
C716
1-162-966-11 CERAMIC CHIP
2200PF
10%
50V
C721
1-126-518-11 ELECT
470uF
20%
4V
C722
1-126-518-11 ELECT
470uF
20%
4V
C732
1-115-156-11 CERAMIC CHIP
1uF
10V
< FILTER >
CF1
1-577-574-11 FILTER, CERAMIC
CF3
1-767-480-11 FILTER, CERAMIC (AM)
< TRIMMER >
CT1
1-141-422-11 CAP, ADJ 10PF (AM TRACKING)
< DIODE >
D1
8-759-072-60 DIODE Z84C4306FEC
D2
8-719-080-77 DIODE MA2S357(E)-(TX).SO
D3
8-719-080-77 DIODE MA2S357(E)-(TX).SO
D5
6-500-174-01 DIODE MA2SP0100LSO (6E)
D401
8-719-158-49 DIODE RD12SB2
D402
8-719-404-50 DIODE MA111-TX
D701
8-719-049-09 DIODE 1SS367-T3SONY
< FERRITE BEAD >
FB1
1-414-760-21 FERRITE
0uH
FB101
1-500-329-21 FERRITE
0uH
FB201
1-500-329-21 FERRITE
0uH
FB301
1-500-329-21 FERRITE
0uH
< IC >
IC1
6-701-310-01 IC TA2154FN(EL)
IC301
6-701-831-01 IC TA2160FN(EL)
IC601
8-759-356-46 IC MM1279XVBE
IC701
6-802-602-01 IC TC9329FA-CFX1738
IC703
8-759-430-08 IC PST9008NL
< JACK >
J301
1-565-287-11 JACK (i)
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