索尼SONY WM-GX400电路图
Ver 1.0 2001.03
WM-GX400
SERVICE MANUAL
RADIO CASSETTE-CORDER
SPECIFICATIONS
Canadian Model
AEP Model
E Model
Chinese Model
Tourist Model
9-873-087-11
2001C0200-1
© 2001.3
Sony Corporation
Audio Entertainment Group
General Engineering Dept.
Model Name Using Similar Mechanism
NEW
Tape Transport Mechanism Type
MT-WMGX400-175
Frequency range
Area*
FM (MHz)
AM (kHz)
AEP, E, Chineses model
87.5 - 108
531 - 1 602
US, Canadian model
87.5 - 108
530 - 1 710
Tourist model
76 - 90
531 - 1 710
* E: European and other countries, U: Canada, and Central and
South America, J: Japan.
Frequency response
Playback: 40 - 15,000 Hz
Recording: 100 - 8,000 Hz
Input
Microphone (MIC) jack
Output
Headphones (i) jack
Load impedance 8 - 300 ohms
Power requirements
3 V DC batteries R6 (size AA) × 2
External DC 3V power sources
Dimensions (w/h/d)
Approx. 112.5 × 87.0 × 39.0 mm
(14 1/2 × 3 1/2 × 1 9/16 inches), excl.
projecting parts and controls
Mass
Approx. 190 g (6.8oz) (main unit only)
Supplied accessories
Stereo headphones or earphones (1)
Stereo microphone (1)
Sony dry battery R6P(SR) (2) (“Sony
World Model” only)
Design and specifications are subject to change without notice.
Battery life (Approx. hours)
(EIAJ*)
Sony alkaline LR6 (SG)** Sony R6P (SR)
(using headphones/earphones)
playback
24
6
radio
48
15
mic recording
20
4.5
radio recording
12
3
(using the speakers)
playback
13
3
radio
23
6
radio recording
8.5
1.5
* Measured value by the standard of EIAJ (Electronic Industries
Association of Japan) (using a Sony HF series cassette tape).
** When using Sony LR6 (SG) “STAMINA” alkaline dry
batteries (produced in Japan).
Note
• The battery life may be shorter depending on the operating
condition, the surrounding temperature and battery type.
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WM-GX400
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
This section is extracted from
instruction manual.
Specifications ........................................................................... 1
1.
GENERAL
Location of Parts and Controls .......................................... 2
2.
DISASSEMBLY
2-1. Cabinet (Front)Cabinet (Rear),
"Lid, Cassette ASSY" ............................................... 3
2-2. Main Board ................................................................. 4
2-3. Mechanism Deck ........................................................ 4
2-4. HRPE301 (REC/PB/ERASE head),
M601 (Capstan/reel motor), Belt (AR) ....................... 5
2-5. Display Board ............................................................. 5
3.
ADJUSTMENTS
3-1. Mechanical Adjustments............................................. 6
3-2. Electrical Adjustments ................................................ 6
4.
DIAGRAMS
4-1. Explanation of IC Terminals ....................................... 7
4-2. Block Diagrams –Tape Section– ................................ 8
4-3. Block Diagrams –Tuner Section– ............................... 9
4-4. Printed Wiring Board –Main Section (Side A)– ....... 10
4-5. Printed Wiring Board –Main Section (Side B)– ....... 11
4-6. Schematic Diagram –Main Section (1/2)– ............... 12
4-7. Schematic Diagram –Main Section (2/2)– ............... 13
4-8. Printed Wiring Board –Display Section (Side A)– ... 14
4-9. Printed Wiring Board –Display Section (Side B)– ... 15
4-10. Schematic Diagram –Display Section– .................. 16
5.
EXPLODED VIEWS
5-1. Cabinet (Rear) Section.............................................. 20
5-2. Cassette Lid Section ................................................. 21
5-3. Mechanism Section-1 (MT-WMGX400-175) .......... 22
5-4. Mechanism Section-2 (MT-WMGX400-175) .......... 23
6.
ELECTRICAL PARTS LIST ................................24
Location of parts and controls
PAUSE
z REC
DIR
REC TIME
AVLS
ISS
DC IN 3V
SPEAKER
i
x STOP
FF/CUE
REW/REVIEW
VOL
FM
AM
OFF
TUNING MODE
TUNING
MIC (PLUG IN POWER)
ENTER
built-in microphone
FM MODE z ST/MONO
FM MODE z DX/LOCAL
(or/ou/oder)
Y PLAY
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WM-GX400
SECTION 2
DISASSEMBLY
Note : Follow the disassembly procedure in the numerical order given.
• The equipment can be removed using the following procedure.
2-1. CABINET (FRONT), CABINET (REAR), "LID, CASSETTE ASSY"
Cabinet (Rear)
Cabinet (Front)
Main board
Mechanism deck
HRPE301 (REC/PB/ERASE head),
M601 (CAPSTAN/REEL motor), Belt (AR)
Set
Lid, cassette ASSY
Display board
Note on installing the
cassette lid assy
When installing the cassette lid ASSY,
insert the one side of the spring (toggle)
and set the other side into the gap on the
cabinet (front) as shown in the figure.
7
3
6 Remove from projection
6 Remove from projection
1 Screws (+B1.7X9)
2 Claws
5 Flexible board (22 core) (CN302)
4 Flexible board (22 core) (CN301)
Lid, cassette ASSY
Cabinet (front)
Cabinet (rear)
Hand strap
Spring (toggle)
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WM-GX400
2-2. MAIN BOARD
2-3. MECHANISM DECK
4
Cabinet (front)
Black
Orange
Red
White
3 Screw (M1.4)
3 Screw (M1.4)
2 Flexible board (9 core)
(CN303)
1 Remove soldering
(four places)
Main board
2
1 Screws (IB LOCK)
Cabinet (front)
Mechanism deck (MT-WMGX400-175)
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WM-GX400
5
3
Lid, cassette ASSY
Gray
Display board
White
Brown
Orange
Red
Black
Holder, cassette
4 Remove soldering (from SP101, SP201)
(four places)
4 Remove soldering (from MIC301)
(two places)
2 Screws (+BTP1.7)
1 Screw (+BTP1.7X5)
2-5. DISPLAY BOARD
2-4. HRPE301 (REC/PB/ERASE HEAD),
M601 (CAPSTAN/REEL MOTOR), BELT (AR)
Attaching belt (AR)
3 Belt (AR)
4 Screws (M1.4)
1 Screws (M1.4)
5 M601 (CAPSTAN/REEL motor)
2 HRPE301 (REC/PB/ERASE head)
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WM-GX400
3-1. MECHANICAL ADJUSTMENTS
PRECAUTION
1. Clean the following parts with a denatured alcohol-moistened
swab :
record/playback/erase head
pinch roller
capstan
rubber belts
2. Demagnetize the record/playback/erase head with a head demag-
netizer. (Do not bring the head demagnetizer close to the erase
head.)
3. Do not use a magnetized screwdriver for the adjustments.
4. After the adjustments, apply suitable locking compound to the
parts adjusted.
5. The adjustments should be performed with the rated power sup-
ply voltage unless otherwise noted.
6. Power supply voltage : 3V DC.
Torque Measurement
Mode
Torque Meter
Meter Reading
1.97 to 3.92 mN • m
Forward/Reverse
CQ-102C
(20 to 40 g • cm)
(0.28 to 0.55 oz• inch)
0.05 to 0.49 mN • m
Forward
CQ-102C
(0.5 to 5.0 g • cm)
Back Tension
(0.007 to 0.07 oz• inch)
0.05 to 0.49 mN • m
Reverse
CQ-102RC
(0.5 to 5.0 g • cm)
Back Tension
(0.007 to 0.07 oz• inch)
Fast Forward
more than 4.90 mN • m
and Rewind
CQ-201B
(50 g • cm)
(0.7 oz• inch)
3-2. ELECTRICAL ADJUSTMENTS
Note:
1. Supplied voltage: 3 V (DC)
2. Switch and control position
VOLUME control
: maximum
SPEAKER/HEADPHONE switch : i (headphone)
AVLS switch
: OFF
FUNCTION switch
: OFF
ISS switch
: 1
TAPE DECK SECTION 0 dB = 0.775 V
Test Tape
Type
Signal
Used for
WS-48A
3 kHz, 0 dB
Tape Speed Adjustment
Tape Speed Adjustment
Procedure:
1. Set REC TIME switch (S706) to NORMAL (4.8cm/s).
2. Play back the center portion of tape in REVmode, adjust RV602
so that the reading on the frequency counter becomes 3,000 Hz.
3. Set REC TIME switch (S706) to DOUBLE (2.4cm/s).
4. Play back the center portion of tape in REVmode, adjust RV601
so that the reading on the frequency counter becomes 1,500 Hz.
Specifications:
NORMAL (4.8cm/s) : 2,985Hz - 3,015Hz
DOUBLE (2.4cm/s)
: 1,485Hz - 1,515Hz
5. Confirm the frequency difference between the beginning and
the end of tape should be 1.5%.
NORMAL (4.8cm/s) : 45Hz
DOUBLE (2.4cm/s)
: 22.5Hz
Adjustment Location:
SECTION 3
ADJUSTMENTS
set
test tape
WS-48A
(3kHz, 0dB)
16Ω
frequency counter
i headphone jack (J301)
IC1
IC301
TP1
RV602
RV601
TP2
GND
RV601: Tape Speed Adjustment (2.4cm/s)
RV602: Tape Speed Adjustment (4.8cm/s)
[MAIN BOARD] (SIDE B)
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7
SECTION 4
DIAGRAMS
Pin No.
Pin name
I/O
Description
1
XOUT
O
Connected to 75kHz Crystal oscillator
2
TEST2
I
For Test
3 – 6
PA3 – 0
I
Control key inputs
7
RADIO ON
O
Radio on/off control signal output
8, 9
PB2, 1
O
Key source signal outputs
10
MOTOR BRK
O
Motor brake control signal output
11
PUSH
I
Tuning dial (S701) common switch signal input
12
PAUSE
I
Pause switch (S303) signal input
13
VERSION
I
Destination select signal input
14
BAND
O
Band select signal output
15
SD
I
SD input
16
COMP
I
COMP input
17
TU MODE
I
Tuning mode select switch (S707) signal input
18
TUNING-A
I
Tuning dial (S701) A switch signal input
19
AMP ON
O
Power amplifier on/off control signal output
20
BEEP
O
Beep signal output
21
BACK UP
I
Back-up voltage detection signal input
22
BATT
I
Battery voltage detection signal input
23
FACTORY
—
Not used Pull-up
24
VSS
—
Power supply ground terminal
25
MUTE
O
Mute signal output
26
MOTOR CTL
O
Motor control signal output
27
N/R SW
O
N/R switch signal output
28
REC
I
REC detection signal input
29
TAPE
I
Tape on/off detection signal input
30
X2
I
Tape speed select switch (S706) signal input
31
TUNING-B
I
Tuning dial (S701) B switch signal input
32
PRE CTL
—
Not used
33 – 44
S12 – S1
O
LCD driver segment output terminal
45 – 48
COM4 – 1
O
LCD driver common output terminal
49 – 52
DBR4 – 1
I
For LCD power supply booster
53
XRESET
I
System reset signal input
54
TU
O
Output for tuning voltage generator
55
VDD
—
Power supply terminal
56
FM IN
I
FM VCO input
57
AM IN
I
AM VCO input
58
VSS
—
Power supply ground terminal
59
E0
O
Main charge pump output
60
AIN
I
LPF amplifier input
61
AOUT
O
LPF amplifier output
62
AGND
—
LPF amplifier ground
63
TEST1
I
For test
64
XIN
I
Connected to 75kHz Crystal oscillator
4-1. EXPLANATION OF IC TERMINALS
IC701 (SYSTEM CONTROL/LCD DRIVE) LC72349W-9A27
TUNER SECTION 0 dB = 1 µV
AM Section
FUNCTION switch: AM
FM Section
FUNCTION switch: FM
• Repeat the procedures in each adjustment several times, and the
frequency coverage and tracking adjustments should be finally
done by the trimmer capacitors.
AM IF ADJUSTMENT
Adjust for a maximum reading on level meter.
RV2
999 kHz <1,000kHz>
AM TRACKING ADJUSTMENT
Adjust for a maximum reading on level meter.
L7
621 kHz <620kHz>
CT1
1,404 kHz <1,400kHz>
FM TRACKING ADJUSTMENT
Adjust for a maximum reading on level meter.
L4
96.0 MHz
FM VCO Adjustment
Procedure:
1. Connect the resistor 10kΩ between TP1 and TP332.
2. Connect the frequency counter to TP1 (IC1 7 pin).
3. Set FUNCTION switch to FM.
4. Tune the set in 96MHz.
5. Adjust RV1 so that the reading on the frequency counter be-
comes 76 kHz.
Specifications: 75 kHz - 77 kHz
AM RF SSG
set
30% amplitude modulation by
400Hz signal.
Output level : as low as possible
Put the lead-wire
antenna close to
the set.
16Ω
i headphone jack (J301)
level meter
FM RF SSG
set
30% amplitude
modulation by
1kHz signal.
Deviation : ±75kHz
Output level : as low
as possible
0.01µF
16Ω
i headphone jack (J301)
main board
TP2
level meter
(side B)
D3
C15
D4
C28
FB201
FB101
D2
R16
FB301
R15
17
TP2
C47
C3
TP368
TP369
TP370
0.01µF
FM RF SSG
TP2
(ANT)
Carrier frequency : 96MHz
Deviation
: none
Output level
: 562 µV (55dB)
[MAIN BOARD] (SIDE B)
Adjustment Location:
[MAIN BOARD] (SIDE B)
IC1
C1
D
C28
L6
L2
C10
C8
C12
C9
C20
C23
C21
C18
R18
R11
R20
R17
TP1
1
10
11
20
21
30
31
40
TP333C34
TP331
TP332
-4
+
+
10kΩ
TP1
(IC1 7 pin)
1µF
frequency
counter
[MAIN BOARD] (SIDE B)
L7:
CT1:
RV2: AM IF Adjustment
L4: FM Tracking Adjustment
RV1: FM VCO Adjustment
AM Tracking Adjustment
no mark : 9kHz step
< > : 10kHz step
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WM-GX400
4-2. BLOCK DIAGRAMS – TAPE SECTION –
CURRENT
DETECT
SPEED
DETECT
SPEED CONTROL
REF
WAVE-
FORM
DETECT
MOTIVE
LOGIC
SOFT
SWITCH
PRE
DRIVE
OUT
U OUT
V OUT
W OUT
VSP
IN+
VREF
S/S
-
+
17
4
5
6
16
15
14
13
BIAS
2
3
10
1
17
26
12
30
27
9
8
6
5
4
13
9
MIC
INPUT (L)
PB PRE
INPUT (L)
MIC AMP
PRE AMP
REC AMP
MIC
PR
REC DRIVE
OUTPUT (L)
S301-3
S301-4
R-CH
VCC
VCC
VCC
VREF
VREF
T331
BATT
BATT
S302-2
S302-1
S301-2
S301-1
PB/REC
SELECTOR
REFERENCE
REC DRIVE
INPUT (L)
B
IC302
(2/2)
REC
SG
A
MAIN
BOARD
(2/2)
REF
REC
D406
VREF
R-CH
L
L
R
FWD
HRPE301
REC/PB/ERASE HEAD
J302
R
MIC
VCC
Flat Mic
MIC
(PLUG IN POWER)
MIC301
ISS
SWITCH
Q335
ND701
LIQUID
CRYSTAL
DISPLAY
MOTOR
BRAKE
Q601-603
BIAS
OSC
Q334,336
ISS
S703
FM
S708
AM
S709
OFF
ENTER
S710
S712
TAPE SPEED 2.4cm/S
RV601
TAPE SPEED 4.8cm/S
RV602
S701 (ROTALY)
3
2
1
S707
S303
BATT
TUN MODE
MOTOR CTL
10
MOTOR BLK
19
AMP ON
29
2
3
22
TAPE
BATT
28
REC
13
VERSION
18
TUNING-A
31
TUNING-B
11
PUSH
C
B A
COM
BATT
PAUSE
X2
N/R SW
PB1
PB2
PA0
PA1
PA2
COM1
COM4
S706
48
45
44
33
S1
S2
SYSTEM
CONTROL
IC701(1/2)
MOTOR DRIVE/
SPEED CONTROL
IC301
IC302 (1/2)
REC/PB AMP
BATT
DETECT
IC702
S302
REC
PB
S301
FWD
REV
RADIO ON
MUTE
C
MAIN
BOARD
(2/2)
GATE
SWITCH
Q356
MIC
VCC
VCC
BATT
Q354-355
REG
Q501, 502
REV
FWD
REV
DC IN 3V
M
M601
CAPSTAN/REEL
MOTOR
U
V
W
COM
S601
(TAPE POWER)
DRY BATTERY
SIZE “AA”
(IEE DESIGNATION LR6)
2PCS, 3V
+
-
J501
[DISPLAY BOARD] (1/3)
[DISPLAY BOARD] (2/3)
R–CH IS OMITTED: SAME AS L–CH
[MAIN BOARD] (1/2)
TUNING MODE
MANUAL
PRESET
VDD
PAUSE
ON
OFF
TUNING
TAPE SPEED
NORMAL
DOUBLE
• Signal path.
E
: PB
a
: REC
N
: MIC
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4-3. BLOCK DIAGRAMS – TUNER SECTION –
25
24
19
27
22
26
20
16
18
FM IN
FM/TV LPF
FM DET.
AM BPF
AGC
TV IN
REGV
MREF
FMRO
TVRO
ARFI
AMLO
FTLO
MPX
35
36
3
7
8
6
3
1
2
4
13
37
12
11
29
2
1
LEVEL
DETECT
MPRG
VCO
RV1
FM VCO
RV2
AM IF
IFCT
ATT
Q1
BUFFER
Q3
DC-DC
CONVERTER
Q401
TUNER B+
SWITCH
Q307, 308
MIC
PB
IC302
(1/2)
B
TUNER
INPUT (L)
LINE
OUT (L)
RV301
AVLS
Q405
MUTE
Q101
Q301, 302
EXCEPT CND, 5E
EXCEPT CND, 5E
CND, 5E
R-CH
R-CH
R-CH
+
-
+
-
S702-1
S702-2
S702
SPEAKER
OFF
ON
S704
AVLS
NORM
LIMIT
REC
SG
MAIN BOARD
(2/2)
A
S705
MONO
ST
LOCAL
DX
SWITCH
Q2
R22
JC2
+
-
+
-
+
-
56
57
61
16 15 14
25
20
7
1
64
BEEP
MUTE
BAND
SD
COMP
RADIO ON
XIN
XOUT
AOUT
AM IN
FM IN
X701
75kHz
MAIN BOARD
(1/2)
SYSTEM CONTROL
IC701
(2/2)
RADIO ON
MUTE
C
IC101(L-CH)
IC201(R-CH)
IC302 (2/2)
PRE AMP
IC1
FM/AM/TV
FRONT-END,
IF, DET, FM MPX
L4
D2
L3
AM FERRITE BAR
ANTENNA
CT1
D1
L7
L6
D4
L4
FM TRACKING
L7, CT1
AM TRACKING
DISPLAY BOARD (3/3)
MAIN BOARD (2/2)
T401
L401
D402
TUNER VCC
VCC
J301
i
SP101
SPEAKER
(L-CH)
SP201
SPEAKER
(R-CH)
DFTO
MPXI
LOUT
ROUT
PLT2
COMP
TUNE
BAND
RADIO ON
LPF OUT
MUTE
R-CH
AM
OSC
FM/TV
OSC
AMP B+
SWITCH
Q371-374
VCC
VCC
MIC VCC
R–CH IS OMITTED: SAME AS L–CH
BTL
POWER AMP
VOLUME
EXCEPT
CND, 5E
CND, 5E
• Signal path.
F
: FM
f
: AM
a
: REC
E
: PB
• Abbreviation
CND
: Canadian
5E
: Indication of country of origin (DX, LOCAL)
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
TEL 13942296513 QQ 376315150 892498299
http://www.xiaoyu163.com
10
10
WM-GX400
4-4. PRINTED WIRING BOARD – MAIN SECTION (SIDE A) –
Note:
• X : parts extracted from the component side.
•
a
: Through hole.
•
: Pattern from the side which enables seeing.
• Abbreviation
CND
: Canadian
5E
: Indication of country of origin (DX, LOCAL)
D402
B-6
D403
B-5
Q1
A-2
Q3
B-2
Q307
C-3
Q308
D-3
Q401
B-7
Ref. No.
Location
z Semiconductor
Location
2
3
4
5
6
7
8
9
10
11
A
1
B
C
D
E
F
G
MAIN BOARD (SIDE A)
11
(11)
1-680-520-
S601
(TAPE POWER)
T331
R154
RV301
VOLUME
R313
R312
Q308
R281
R176
R177
R178
C179
C279
R278
R277
R376
R375
R201
C203
R604
R603
R609
C105
C335
R505
C186
EXCEPT CND,5E
CND,5E
R441
C187
R181
R180
C357
R280
R403
R402
C404
C403
C406
C402
C401
C407
Q401
L401
C405
R19
D402
R8
Q307
CT1
R6
Q3
R1
Q1
C2
R21
C16
JC3
C32
R10
R13
C25
R308
L4
C37
C30
C39
R159
R205
R105
C43
C42
C48
R352
R309
C49
C50
C53
C51
C375
D403
FB303
C410
RV1
RV2
R22
JC2
R404
BCE
BCE
BCE
BCE
BCE
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
TEL 13942296513 QQ 376315150 892498299
http://www.xiaoyu163.com
WM-GX400
11
11
4-5. PRINTED WIRING BOARD – MAIN SECTION (SIDE B) –
2
3
4
5
6
7
8
9
10
11
A
1
B
C
D
E
F
G
H
R152
IC1
C17
-1
-3
-2
-4
C204
R155
R360
Q354
D4
D1
C28
L6
C40
CN301
R307
FB201
FB101
D2
C10
R5
C11
R3
C7
FB301
R4
C8
C12
C9
C6
C5
C4
C606
C20
C23
R2
C21
C19
C18
R18
R11
C24
C29
C26
R15
R14
R20
R17
R256
C152
R255
R257
R359
Q405
R251
R357
C252
C255
C256
R204
R158
C156
R157
C151
C354
C155
C251
C355
Q356
R151
R356
TP1
1
10
11
20
21
30
31
40
R258
C101
C254
IC302
R252
R104
C104
R156
TP333
C154
Q355
R358
TP322
Q2
IC101
IC201
R606
RV602
TP324
TP329
TP316
C341
RV601
R106
R206
TH601
C356
R103
1
12
13
24
R343
TP301
C502
C176
C178
C180
C172
R173
R172
R171
Q101
C184
C276
C278
R276
C280
R273
R272
R271
R116
C272
Q201
R274
C374
Q373
R374
R373
Q372
Q371
R371
R203
R101
R107
C103
R602
R353
R207
C182
R601
C605
R614
C608
C603
C609
C602
C607
R607
R608
R605
C358
Q336
C340
R344
R306
Q301
C205
C34
TP306
C604
Q302
Q602
D501
C333
R337
Q334
C332
R336
Q335
C336
C337
C338
C339
R338
R339
R340
R341
R335
C334
Q601
R612
R613
R610
R611
Q603
CN303
CN302
1
5
10
15
20 22
TP302
TP308
TP303
TP310
TP305
TP307
R502
TP315
TP314
TP313
TP403
TP317
TP318
TP311
TP309
TP319
C185
Q404
R305
R342
C282
Q502
R503
C331
R504
R501
C501
Q501
TP304
TP330
TP312
TP2
TP331
TP321
TP332
TP334
TP335
TP320
TP325
TP326
TP327
TP328
EXCEPT CND,5E
TP358
TP363
TP360
TP359
1
5
9
TP356
REV FWD
TP357
TP362
TP361
C201
TP472
TP471
C181
TP323
TP336
TP337
R279
Q374
R259
D406
C188
R372
R377
R283
C171
C271
R179
C44
R282
C177
C173
C273
C277
R174
T401
R254
C3
TP364
TP365
TP366
TP3
TP367
TP368
TP369
TP370
J302
MIC
(PLUG IN POWER)
FB302
D401
R401
C408
BLK
ORG
WHT
RED
C409
R378
IC301
C352
C503
C371
J501
L7
S301
(F/R SW)
S302
REC
PB
C504
1
5
10
15
20 22
-2
-4
A
DISPLAY BOARD
CN701
B
DISPLAY BOARD
CN702
M601
REEL/CAPSTAN
MOTOR
M
ON OFF
PAUSE
11
(11)
1-680-520-
MAIN BOARD (SIDE B)
L3
AM
FERRITE CORE
ANTENNA
J301
i
DRY BATTERY
SIZE "AA"
(IEC DESIGNATION LR6)
2PCS, 3V
DC IN 3V
S303
T
L-CH
R-CH
R-CH
L-CH
FWD
FWD
ERASE
REV
REV
1
2
3
4
5
HRPE301
REC/
PLAYBACK/
ERASE
HEAD
4
4
4
D1
C-10
D2
B-9
D4
B-9
D401
C-4
D406
C-6
D501
B-3
IC1
B-8
IC101
E-2
IC201
E-3
IC301
D-4
IC302
D-8
Q2
B-7
Q101
F-2
Q201
F-2
Q301
D-5
Q302
D-5
Q334
E-4
Q335
D-3
Q336
E-4
Q354
E-9
Q355
D-9
Q356
D-9
Q371
C-2
Q372
D-2
Q373
D-2
Q374
D-2
Q404
E-7
Q405
D-7
Q501
B-3
Q502
B-3
Q601
C-5
Q602
D-5
Q603
D-5
Ref. No.
Location
z Semiconductor
Location
Note:
• X : parts extracted from the component side.
•
a
: Through hole.
•
: Pattern from the side which enables seeing.
• Abbreviation
CND
: Canadian
5E
: Indication of country of origin (DX, LOCAL)
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-GX400
4-6. SCHEMATIC DIAGRAM – MAIN SECTION (1/2) – z Refer to page 17 for Notes. z Refer to page 17 for Waveforms. z Refer to page 18 for IC Block Diagram.
C3
C7
C12
R3
C8
R6
RV1
C17
C18
C19
TP1
R8
C21
C23
C37
R2
C4
C5
C6
C9
R4
C11
D406
R256
C201
R360
C354
C355
C352
FB302
C375
R378
Q355
R358
R359
C356
R251
R151
R357
R356
C151
R152
R258
C256
R201
R203
R254
R255
C254
C204
C10
C16
RV2
C44
CT1
C24
R14
C29
L7
R18
R19
C43
R13
C48
R10
C25
D4
R20
L6
C49
C30
R17
C42
D2
C26
C34
C40
R15
D1
C403
R404
D401
D402
C401
C402
C408
R401
C404
C405
R403
C407
R402
C406
Q307
R313
R312
C186
R505
C187
FB303
D403
C409
C410
C28
R105
R205
L401
CN301
IC1
Q3
C358
C152
C357
R159
C105
C156
R158
R156
C101
R155
C154
R154
C104
R107
R104
C103
R101
R103
R157
C155
C205
C252
R259
R204
R207
C203
R353
C255
R257
JC3
R352
C20
C39
R11
J302
C251
R252
R21
C32
Q401
Q308
Q356
Q354
IC302
C50
T401
R5
Q1
C2
R1
Q2
JC2
R22
L4
100p
470p
4.7
4V
2.2k
0.47
2.2k
4.7k
10
4V
0.022
0.022
10k
0.01
22
4V
2200p
0
0.1
0.1
1
22 4V
470
1
1SS367
2.2k
1
4.7k
22
4V
47
4V
4.7
4V
0.01
1k
2SC4116
1k
3.3k
47
4V
3.3k
3.3k
47k
10k
0.047
1k
10k
2200p
15k
330k
10k
6.8k
1
47
4V
100p
4.7
4V
100k
1000p
10p
0.022
100k
4700p
AM OSC
22k
100k
1000p
150
1000p
4.7k
4p
KV1471E
1k
27nH
1000p
10
4V
10k
1000p
KV1471E
0.01
0.01
0.01
100k
KV1520-TL
0.01
47k
MA111
MA8130
1000p
1
10p
1k
0.01
22
4V
22
0.022
100k
5p
2SA1586
2.2k
47k
0.01
100k
0.01
1SS367
2.2
6.3V
0.01
470p
15k
15k
22P
CXA1960Q
2SC3931
LPF
47
4V
0.01
1
10k
2200p
2200p
10k
2.2k
1
6.8k
1
10k
47
4V
220k
220
0.01
15k
330k
0
1
2200p
0.01
10k
220
220k
0.01
10k
1
0
0
1k
1
1000p
10k
0.047
1k
0
1000p
2SC3931
RN1311
2SA1586
RN1311
CXA2500N
1
DC DC CON
TRANCE
FM RF
1 2
3
4
5
6
7
8
9 10 11
1213 1415 16
*
*
*
*
*
*
*
FM IN
AVLS
N/R SW
REC
TAPE
MUTE
LED
GND
TUNER VCC
GND
LPF OUT
AM IN
MIC
MIC GND
MIC VCC
MONO
COMP
X SD
BAND
RADIO ON
BEEP
GND
REFERENCE
AGC TIME CONSTANT
TAPE/TUNER
SERECTOR
PB/REC
VCC
GND
REC DRIVE OUTPUT(L)
REC DRIVE OUTPUT(R)
REC DRIVE INPUT(L)
REC DRIVE INPUT(R)
LINE OUTPUT(L)
LINE OUTPUT(R)
TUNER INPUT(L)
TUNER INPUT(R)
PB EQ SWITCH(L)
PB EQ SWITCH(R)
PB OUTPUT(L)
PB OUTPUT(R)
PB NF(L)
PB NF(R)
PB PRE INPUT(L)
PB PRE INPUT(R)
MIC INPUT(L)
MIC INPUT(R)
SERECTOR
MPRM
V12M
MUTE
AAGC
DETO
MPXI
PLT2
PLT1
PLL1
PLL2
TVRO
REGV
FTLO
FMBF
AMLO
FALC
PLLO
COMP
BAND
TUNE
FMIB
IFCT
NC
MREF
ARFI
GND
FMRO
OLAG
DDCN
PLLI
STID
MCNT
GND
VCC
FM/AM/TV
FRONT-END,
IF,DET,FM MPX
VCO
MPRG
L OUT
R OUT
FM IN
TV IN
AM
ANTENNA
FERRITE ROD
AM TRACKING
L3
RV2
AM IF
FM VCO
MIC
(PLUG IN POWER)
FM TRACKING
CT1,L7
DC-DC
CONVERTER
TUNER B+
SWITCH
TUNER B+
SWITCH
SWITCH
GATE
GATE
REC/PB AMP
PRE AMP
ATT
SWITCH
C2
JC2
Q1
R1
R5
R22
Q2
CND,5E
E,9E,CH,
470P
100P
100P
JC
-
-
2SC4098
2SC4116
2SC4116
-
RN1311
JC
47
-
-
10k
47k
RN1311
47
10k
47k
FR
AEP,EA,JEW
BOARD
DISPLAY
CN701
BOARD
MAIN
(2/2)
BOARD
MAIN
(2/2)
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
TEL 13942296513 QQ 376315150 892498299
http://www.xiaoyu163.com
WM-GX400
13
13
4-7. SCHEMATIC DIAGRAM – MAIN SECTION (2/2) – z Refer to page 17 for Notes. z Refer to page 17 for Waveforms. z Refer to page 19 for IC Block Diagram.
C53
C504
C503
R504
C502
C501
R502
R503
D501
FB201
FB101
FB301
R181
R281
C602
R602
C609
R604
R603
C603
C604
C608
R611
R613
R612
R610
R609
R605
C605
RV602
C606
C607
R374
R373
Q372
R371
C188
R372
R377
C185
C179
R178
R176
C177
C178
C176
C173
C171
C172
R273
R173
C181
C184
Q201
R172
R171
R271
R376
R375
R174
C277
C278
C271
C276
C273
R274
C272
R272
R277
R283
R276
R278
C279
R177
Q405
R282
R305
R306
C341
R307
Q404
R308
R309
CN303
C335
C336
C337
Q335
R340
R341
C339
C338
R339
R338
C334
Q336
R336
C332
C333
R337
R335
C340
R116
R441
S601
TP411
R343
R607
C51
C374
IC301
CN302
IC201
IC101
R344
C371
HRPE301
RV301
M601
J301
J501
S303
R501
C280
C180
R601
R614
TH601
R608
R342
C182
C282
Q301
Q302
Q101
T331
Q334
Q373
Q371
Q374
Q501
Q502
Q603
Q602
Q601
R606
RV601
R179
R279
R280
R180
R106
R206
1000p
220
4V
470
4V
150k
22
4V
1000p
4.7k
10k
1SS367
100k
100k
0.068
1M
0.47
1M
1M
0.068
0.068
0.22
100
100
47k
47k
10k
1k
0.047
4.7k
2.2
6.3V
0.47
4.7k
0
2SC4116
10k
10
4V
150k
470
0.01
0.22
10
10k
22
4V
0.01
0.01
22
4V
2200p
1
47k
47k
1
0.01
2SC4213
100
1k
1k
1M
1M
100
22
4V
0.01
2200p
0.01
22
4V
100
1
100
10k
10k
10k
10
0.22
10k
2SC4213
10k
10k
1k
1
100k
2SC4213
100k
150
9P
2200p
220p
470p
2SC4207
1k
47k
0.01
0.01
47k
1k
47
4V
2SC4116
10
0.01
1000p
10k
47
1
10k
100k
TAPE POWER SW
4.7k
100k
1000p
1
LB1979V
22P
NJM2073M
NJM2073M
0
100
4V
MOTOR
(REEL/CAPSTAN)
680
1
1
1k
33k
3.3K
3900PPM
0
470
100
4V
100
4V
RN2307
2SC4116
2SC4213
2SD596-T1DV4
2SA1362
RN1307
2SC4116
2SA1362
2SC4207
RN1311
2SA1745
2SA1745
0
4.7k
1
2
3
4
5
12
10
7
6
8
9
13
11
16
15
14
*
*
*
*
*
*
R
L
FWD
REV
FWD
REV
R
L
ERASE
MOTOR BRK
MOTOR CTL
AMP ON
PAUSE
BATT
GND
GND
ISS 2
ISS 3
TAPE SPEED
VDD
SP-R +
SP-R +
SP-R -
SP-R -
SP-L +
SP-L +
SP-L -
SP-L -
FWD(L)
FWD(R)
REF
FWD ERASE
ERASE GND
REV ERASE
REF
REV(R)
REV(L)
VCC
VCC
A+IN
A+IN
B+IN
B+IN
OUT-B
OUT-B
A-IN
A-IN
B-IN
B-IN
OUT-A
OUT-A
GND
GND
VCC
HP-L
HP-R
WB
VCC
NC
U OUT
V OUT
W OUT
P-GND
VB
UB
GND
OSC
COM
S/S
VREF
IN+
VSP
OUT
RI
FC
FC GND
DC IN 3V
S301
FWD
REV
-1
-2
-3
-4
-1
-2
-3
-4
S302
PB
REC
VOLUME
R179
R279
R106
R206
R180
R280
22
22
22
22
100
100
68
68
470
470
68
68
220k
2.2k
220k
2.2k
220k
220k
PAUSE
DRY BATTERY
SIZE"AA"
(IEC DESIGNATION LR6)
2PCS,3V
ERASE
PLAYBACK/
RECORD/
HEAD
COM
W
V
U
OFF
ON
SWITCH
SWITCH
BTL POWER AMP
BTL POWER AMP
AVLS
AVLS
MUTE
MUTE
ISS SWITCH
OSC
BIAS
BIAS OSC
BIAS OSC
SWITCH
SWITCH
SWITCH
PROTECT
MOTOR
CONTROL
SPEED
DRIVE/
REG
REG
MOTOR
BRAKE
MOTOR
BRAKE
MOTOR
BRAKE
TAPE SPEED 2.4cm/s
TAPE SPEED 4.8cm/s
CND,5E
E,9E,CH,
FR
AEP,EA,JEW
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
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14
14
WM-GX400
11
(11)
1-680-521-
DISPLAY BOARD (SIDE A)
S704
AVLS
NORMAL
LIMIT
S703
ISS
3
2
1
S702
ON OFF
SPEAKER
S704
R720 C719
R721
3
2
1
IC702
R711
R709
R703
L702
R705
S705
EXCEPT CND,5E
MONO
ST
S705
FM
MODE
C752
R701
R752
S702
R753
R743
S712
ENTER
S708
FM
S710
OFF
S709
AM
S701
TUNING
ND701
LIQUID CRYSTAL
DISPLAY
CND,5E
LOCAL
DX
2
3
4
5
6
7
8
9
10
A
1
B
C
D
E
4-8. PRINTED WIRING BOARD – DISPLAY SECTION (SIDE A) –
Note:
• X : parts extracted from the component side.
•
a
: Through hole.
•
: Pattern from the side which enables seeing.
• Abbreviation
CND
: Canadian
5E
: Indication of country of origin (DX, LOCAL)
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
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WM-GX400
15
15
4-9. PRINTED WIRING BOARD – DISPLAY SECTION (SIDE B) –
S706
NORMAL DOUBLE
REC TIME
S707
MANUAL PRESET
TUNING MODE
11
(11)
1-680-521-
DISPLAY BOARD (SIDE B)
B
MAIN BOARD
CN302
A
MAIN BOARD
CN301
MIC301
Flat Mic
SP201
SPEAKER
R-CH
SP101
SPEAKER
L-CH
IC701
X701
R702
R707
CN701
R722
R708
R726
R724
R718
R719
R741
R736
R737
C717
C718
C715
C713
C702 C720
C707
C708
R731
C710
C711
JC701
R725
R704
C706
C705
JC703
S706
ORG
BRN
WHT
GRY
C724
R723
TP731
TP704
TP734
TP721
TP718
TP720
TP722
TP723
TP719
TP707
TP717
TP725
TP727
TP726
TP724
TP710
TP737
TP714
TP744
TP747
TP728
TP729
TP730
TP705
TP703
TP706
C704
C722
C726
R715
R713
TP738
TP735
TP740
TP732
TP733
TP741
BLK
RED
R750
R751
C751
R739
C721
R728
C730
R714
R710 R712
R729
R730
R716
TP716
TP715
TP709
CN702
TP748
TP749
C712
R754
C732
BLK
TP750
R706
C727
(CHASSIS)
1
5
10
15
20 22
1
5
10
15
20 22
2
3
4
5
6
7
8
9
10
A
1
B
C
D
E
Note:
• X : parts extracted from the component side.
•
a
: Through hole.
•
: Pattern from the side which enables seeing.
• Abbreviation
CND
: Canadian
5E
: Indication of country of origin (DX, LOCAL)
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
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16
WM-GX400
4-10. SCHEMATIC DIAGRAM – DISPLAY SECTION – z Refer to page 17 for Notes. z Refer to page 17 for Waveforms.
C721
R739
R727
R714
R712
R710
C704
C702
S712
S708
S709
S710
JC701
C720
C717
R737
C718
R754
C715
C713
R731
C708
C706
C705
C712
C707
L702
R751
R750
C751
C750
R729
R730
R753
TP750
C732
C722
C724
R743
R705
R728
R715
R722
C727
R723
R724
R725
R726
C726
R707
R721
C719
R720
R713
R711
R709
R706
R736
R716
ND701
IC701
R741
CN701
CN702
R752
R704
R703
R702
R701
IC702
S706(1/2)
S706(2/2)
S701
S703
S702(1/2)
S702(2/2)
S704
R718
R719
MIC301
SP201
SP101
X701
S707
JC703
C752
C711
S705
R708
0.1
1k
100k
100k
100k
100k
10p
4p
0.01
1000p
6.8k
0.47
2.2k
100p
100p
100k
1
0.1
0.1
22
4V
0.1
3.3k
3.3k
1
0.1
100k
100k
330k
0.01
1
0.1
1k
10k
1k
1k
4.7k
0.01
1k
1k
1k
1k
0.01
1k
100k
0.047
100k
1k
1k
1k
1k
10k
100k
LCD
LC72349W
10k
22P
22P
330k
10k
10k
10k
10k
XC62RP1602MR
10k
33k
75kHz
0
10
4V
1000p
S1
S2
S3
S4
S5
S6
S7
S8
S9
S10
S11
S12
S1
S2
S3
S4
S5
S6
S7
S8
S9
S10
S11
S12
COM1
COM2
COM3
COM4
COM2
COM3
COM4
COM1
*
FM IN
AM IN
LPF OUT
GND
MONO
COMP
BAND
X SD
RADIO ON
MIC
MIC GND
MIC VCC
AVLS
N/R SW
REC
TAPE
MUTE
LED
GND
MOTOR BRK
MOTOR CTL
AMP ON
PAUSE
BATT
GND
GND
ISS 2
ISS 3
TAPE SPEED
VDD
SP-R +
SP-R +
SP-R -
SP-R -
SP-L +
SP-L +
SP-L -
SP-L -
TUNER VCC
VCC
HP-R
HP-L
BEEP
GND
FM
AM
ISS
AVLS
LIMIT
Mic
Flat
NORM
3
2
1
FM MODE
LOCAL
DX
MONO
ST
REC TIME
NORMAL
DOUBLE
REC TIME
NORMAL
DOUBLE
TUNING MODE
PRESET
MANUAL
OFF
ENTER
TUNING
SPEAKER
ON
OFF
SPEAKER
(L-CH)
SPEAKER
(R-CH)
BATT DETECT
LCD DRIVE
SYSTEM CONTROL/
EXCEPT
CND,5E
CND,5E
*R708
470
1.5k
10k
CND,5E
AEP,FR,CH,EA
E,9E,JEW
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
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WM-GX400
Common 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.
• C : panel designation.
• A : B+ Line.
• H : adjustment for repair.
• Power voltage is dc 3V and fed with regulated dc power
supply from battery terminal.
• Voltage and waveforms are dc with respect to ground
under no-signal (detuned) conditions.
no mark : FM
(
) : AM
<< >> : REC
[
] : PB
• Voltages are taken with a VOM (Input impedance 10 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
E
: PB
a
: REC
N
: MIC
• Abbreviation
CND
: Canadian
FR
: French
EA
: Saudi Arabia
CH
: Chinese
JEW
: Tourist
E
: Indication of country of origin (ST, MONO)
9E
: No Indication of country of origin
5E
: Indication of country of origin (DX, LOCAL)
1
IC401 C
VOLT/DIV : 0.5 V AC
TIME/DIV : 0.1 µsec
– MAIN SECTION (1/2) –
z Waveforms
RADIO mode
3.2Vp-p
26MHz
2
Q334 C
VOLT/DIV : 0.5 V AC
TIME/DIV : 10 µsec
– MAIN SECTION (2/2) –
REC mode
2.9Vp-p
48KHz
3
IC701 1
XOUT
VOLT/DIV : 50 mV AC
TIME/DIV : 5 µsec
– DISPLAY SECTION –
265mVp-p
75KHz
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18
WM-GX400
• IC Block Diagrams
IC302 CXA2500N-T4
IC1 CXA1960Q
+
–
12
13
14
19
15
TVIN
MREF
GND
FMIB
IFCT
NC
FMIN
FMRO
OLAG
ARFI
REGV
TVRO
FTLO
BAND
TUNE
PLLO
FALC
COMP
37
38
39
40
AAGC
DETO
PLT2
MPXI
MPRM
V12M
MUTE
PLT1
PLL1
PLL2
MPX DECODER
AM BPF
PSN
1/X
FM/TV
LPF
PD
VCO
1/2
1/2
STID
14V
PLAP
TUNE
38kHz
STEREO AUDIO R
STEREO AUDIO L
19kHz
1.65V
1.25V
36
8
9
10
VCO
STID
MCNT
GND
VCC
1
4
2
3
5
6
MPRG
LOUT
ROUT
DDCN
PLLI
7
+
–
+
–
35
34
FM DET
150kHz
FM LMT
OL DET
TV RF
AMP
FM RF
AMP
AM RF
AMP
45kHz
31
32
33
MUTE
AGC AMP
AM AGC
1.25V
AM/FM: 1/2
TV: 1/8
1.25V
18
17
16
FMBF
AMLO
AM OSC
FM/TV OSC
20
30
29
27
28
23
24
25
26
22 21
11
REFERENCE
MIC INPUT (A)
PB OUTPUT (A)
REC DRIVE INPUT (A)
REC DRIVE OUTPUT (A)
AGC TIME CONSTANT
TAPE/TUNER SELECTOR
1
2
PB PRE INPUT (A)
PB NF (A)
3
4
5
PB EQ SWITCH (A)
TUNER INPUT (A)
LINE OUTPUT (A)
6
7
8
9
10
11
12
REC DRIVE OUTPUT (B)
VCC
PB/REC SELECTOR
13
14
15
PB OUTPUT (B)
PB NF (B)
PB PRE INPUT (B)
MIC INPUT (B)
GND
20
21
22
23
24
TUNER INPUT(B)
PB EQ SWITCH (B)
18
19
REC DRIVE INPUT (B)
LINE OUTPUT (B)
16
17
TAPE/
TUNER
REF
AGC
MIC
NORM/
METAL
GCA
PB
LINE
REC
AGC
DET
AMP
AGC
MIC
GCA
PB
LINE
REC
AGC
DET
AMP
MIC
GCA
PB
LINE
REC
AMP
PB/
REC
6dB
22dB
12dB
-0.3dB
20.5dB
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19
WM-GX400
IC301 LB1979LV-TLM
IC101, 201 NJM2073M
1
2
3
4
5
6
7
8
A.–
A.+
B.+
B.–
A.OUT
B.OUT
VDD
GND
FC GND
VCC
VCC
FC
WB
VCC
NC
UOUT
VOUT
WOUT
P-GND
VB
UB
GND
TO
CONTROL
BLOCKS
TO
EACH
BLOCKS
RI
OUT
VSP
IN+
VREF
S/S
COM
OSC
7
5
4
3
1
2
6
8
9
10
11
12
13
14
15
16
18
20
19
STARTING
DETECT
POWER
SUPPLY
BIAS
OSCILLATING
CIRCUIT
SPEED CONTROL
REFERENCE VOLTAGE
REFERENCE
VOLTAGE
CURRENT
DETECT
SPEED
DETECT
WAVEFORM DETECT
COMMUTATION STARTING LOGIC
SOFT SWITCH
PRE DRIVER
+
–
17
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20
WM-GX400
SECTION 5
EXPLODED VIEWS
NOTE :
• -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.
• The mechanical parts with no reference
number in the exploded views are not
supplied.
• Abbreviation
CND
: Canadian
FR
: French
EA
: Saudi Arabia
CH
: Chinese
JEW
: Tourist
E
: Indication of country of origin
(ST, MONO)
9E
: No Indication of country of origin
5E
: Indication of country of origin
(DX, LOCAL)
Ref. No.
Part No.
Description
Remark
Ref. No.
Part No.
Description
Remark
5-1. CABINET (REAR) SECTION
1
3-328-319-01 STRAP, HAND
2
3-225-573-31 CABINET (FRONT)(EXCEPT CND,5E)
2
3-225-573-41 CABINET (FRONT)(CND,5E)
3
3-225-572-11 BUTTON (REC)
4
3-225-569-11 BUTTON (STOP)
5
3-225-568-11 BUTTON (PLAY)
6
3-225-571-11 BUTTON (REW)
7
3-225-570-11 BUTTON (FF)
* 8
A-3021-364-A MAIN BOARD, COMPLETE
(AEP,E,9E,CH,EA,JEW)
* 8
A-3021-367-A MAIN BOARD, COMPLETE (CND,5E)
* 8
A-3021-369-A MAIN BOARD, COMPLETE (FR)
9
3-927-521-01 CUSHION (BATTERY CASE LID)
10
3-225-577-11 LID, BATTERY CASE
11
3-226-525-01 TERMINAL (+)
12
3-345-648-95 SCREW (M1.4), TOOTHED LOCK
13
3-226-526-01 TERMINAL (–)
14
3-225-576-31 CABINET (REAR) (EXCEPT 9E)
14
3-225-576-41 CABINET (REAR) (9E)
15
3-318-203-92 SCREW (B1.7X9), TAPPING
16
3-226-542-01 KNOB (PAUSE)
17
3-389-523-23 SCREW (IB LOCK)
1
2
17
16
15
15
14
11
10
9
12
8
13
12
7
6
5
4
3
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21
WM-GX400
Ref. No.
Part No.
Description
Remark
Ref. No.
Part No.
Description
Remark
5-2. CASSETTE LID SECTION
51
3-318-203-63 SCREW (B1.7), TAPPING
52
3-318-203-71 SCREW (B1.7X5), TAPPING
53
4-017-441-01 CUSHION (B)
* 54
A-3021-365-A DISPLAY BOARD, COMPLETE(AEP,FR,CH,EA)
* 54
A-3021-366-A DISPLAY BOARD, COMPLETE(E,9E,JEW)
* 54
A-3021-368-A DISPLAY BOARD, COMPLETE(CND,5E)
55
1-680-519-11 FLEXIBLE BOARD
56
3-226-538-11 BUTTON (TUNING)
57
3-226-532-01 KNOB (SPK)
58
3-226-540-01 KNOB (ISS)
59
3-226-539-01 HOLDER, CASSETTE
61
3-034-792-01 SCREW, TAPPING (B2.0)
62
3-375-114-31 SCREW
63
3-229-667-01 CUSHION, MIC
64
3-039-027-01 SPACER (MIC)
65
3-229-210-01 SPRING (CASSETTE)
66
X-3380-888-1 LID,CASSETTE ASSY
67
3-229-212-01 PLATE, MAGNETICALLY SHIELD
MIC301 1-542-386-11 MICROPHONE, ELECTRET CONDENSER
SP101
1-505-493-11 SPEAKER (3.6cm)
SP201
1-505-493-11 SPEAKER (3.6cm)
52
51
53
53
59
63
58
58
65
62
61
67
61
66
57
58
64
54
56
55
57
57
55
SP201
SP101
MIC301
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22
WM-GX400
Ref. No.
Part No.
Description
Remark
Ref. No.
Part No.
Description
Remark
5-3. MECHANISM SECTION-1 (MT-WMGX400-175)
101
3-704-197-01 SCREW (M1.4), SPECIAL HEAD
102
3-225-429-01 BELT (AR)
103
3-225-390-01 PULLEY (REVERSE)
104
X-3379-877-1 FLY ASSY, CAPSTAN
105
3-386-694-01 WASHER
106
3-029-278-01 WASHER
107
3-029-275-01 WASHER (STOPPER N)
108
3-042-480-01 SCREW (M1.4)
109
X-3379-882-1 PINCH (N) ASSY, ARM
110
3-019-776-01 GEAR (REEL-S)
111
3-225-399-01 LEVER (N SHUT OFF)
112
X-3379-883-1 PINCH (R) ASSY, ARM
HRPE3011-500-685-11 HEAD, MAGNETIC (REC/PB/ERASE)
M601
1-763-687-11 MOTOR, DC(CAPSTAN/REEL)
(INCULUDING PULLY)
110
107
106
105
105
103
102
101
107
106
104
111
109
112
108
z A (Included in No.151)
M601
HRPE301
not
supplied
not
supplied
not
supplied
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23
WM-GX400
Ref. No.
Part No.
Description
Remark
Ref. No.
Part No.
Description
Remark
5-4. MECHANISM SECTION-2 (MT-WMGX400-175)
151
X-3379-878-1 CHASSIS ASSY
152
3-225-385-01 GEAR (B)
153
3-229-063-01 SPRING (UD) (R)
154
3-019-778-01 SLEEVE (MS)
155
3-728-091-01 WASHER, STOPPER
156
3-225-427-01 LEVER (WASHER)
157
3-225-384-01 GEAR (A)
159
3-225-395-01 LEVER (REW ROTARY)
160
3-225-392-01 LEVER (END DETECTION)
161
3-229-064-01 WASHER, STOPPER
162
3-225-393-01 LEVER (SHUT/OFF)
163
3-225-448-01 SPRING (SHUT/OFF), TORSION
164
3-321-813-71 WASHER, COTTER POLYETHYLENE
165
X-3379-881-1 CLUTCH ASSY
166
3-315-384-31 WASHER, STOPPER
167
3-225-438-01 SPRING (NR SLIDER), TORSION
168
3-225-396-01 LEVER (DIR)
169
3-225-388-01 GEAR (D)
170
3-225-394-01 LEVER (FF ROTARY)
171
3-225-444-01 SPRING (FR ROTARY), TENSION
151
152
153
154
155
156
157
159
160
162
164
163
165
166
167
168
169
171
170
161
(Including z A)
www. xiaoyu163. com
QQ 376315150
9
9
2
8
9
4
2
9
8
TEL 13942296513
9
9
2
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9
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9
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0
5
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TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299
http://www.xiaoyu163.com
24
WM-GX400
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
• Abbreviation
CND
: Canadian
FR
: French
EA
: Saudi Arabia
CH
: Chinese
JEW
: Tourist
E
: Indication of country of origin
(ST, MONO)
9E
: No Indication of country of origin
5E
: Indication of country of origin
(DX, LOCAL)
SECTION 6
ELECTRICAL PARTS LIST
Ref. No.
Part No.
Description
Remark
Ref. No.
Part No.
Description
Remark
*
A-3021-364-A MAIN BOARD, COMPLETE
(AEP,E,9E,CH,EA,JEW)
*
A-3021-367-A MAIN BOARD, COMPLETE (CND,5E)
*
A-3021-369-A MAIN BOARD, COMPLETE (FR)
*********************
4-017-441-01 CUSHION (B)
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