Sony WM-GX410 - Walkman User manual

WM-GX410
Canadian Model
AEP Model
E Model
Chinese Model
Tourist Model
SERVICE MANUAL
RADIO CASSETTE-CORDER
Sony Corporation
Personal Audio Company
Published by Sony Engineering Corporation
9-877-585-02
2004D02-1
© 2004.04
SPECIFICATIONS
Ver 1.1 2004. 04
Model Name Using Simillar Mechanism NEW
Tape Transport Mechanism Type MT-WMGX410-175
Frequency range
Area*FM (MHz) AM(kHz)
AEP, E, Chinese 7.5 - 108 531 - 1 602
Canada, Tourist 87.5 - 108 530 - 1 710
Frequency response Playback: 40 - 15 000 Hz
Recording: 100 - 8 000 Hz
Input Microphone (MIC) jack
Output Headphones (i) jack
Load impedance 8 - 300 Ω
Power requirements 3 V DC: batteries R6 (size AA) x 2
External DC 3V power sources
Power output Speaker 500 mW + 500 mW
(JEITA*)
Dimensions (w/h/d) Approx. 112.0x 82.5 x 35.0 mm
(4 1/2x 3 1/4x 1 7/16 inches), excl.
projecting parts and controls
Mass Approx. 200 g (7.1oz)
(main unit only)
Supplied accessories Stereo headphones or earphones (1)
Sony dry battery R6P(SR) (2)
(“Sony World Model” only)
Design and specifications are subject to change without notice.
Battery life*(Approx. hours)
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 10 2.5
radio 17.5 5
radio recording 6.5 1
*Measured value by the standard of JEITA(Japan Electronics and
Information Technology IndustriesAssociation). (Using a Sony
HF series cassette tape)
** When using Sony LR6 (SG) alkaline dry batteries (producedin
Japan).
Note
The battery life may be shorter depending on the operating ondition,
the surrounding temperature and battery type.

2
WM-GX410
TABLE OF CONTENTS
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
damaged by heat.
SECTION 1
GENERAL This section is extracted
from instruction manual.
PAUSE
REC
DIR
REC TIME/PLAY MODE
AVLS
ISS
DC IN 3V
STOP
FF/CUEREW/REVIEW
PLAY**
VOL*
FM
AM
TUNE MODE
TUNING/ENTER
FM MODE•MONO/ST
FM MODE•LOCAL/DX
MIC (PLUG IN POWER)**
*There is a tactile dot beside VOL on the main unit to show the direction to turn
up the volume.
** The button or jack has a tactile dot.
Antenna
HOLD
Flat Mic
RADIO OFF
SOUND BOOST
Specifications ............................................................................ 1
1. GENERAL
Location of Parts and Controls ........................................2
2. DISASSEMBLY
2-1. Disassembly Flow ....................................................3
2-2. Cabinet (Center), cabinet Front Assy ....................... 3
2-3. Main Board .............................................................. 4
2-4. Mechanism Deck (MT-WMFX410-175) ................. 4
2-5. Cassette Holder Sub Assy ........................................ 5
2-6. Sub Board................................................................. 5
2-7. Rec/PB/ Erase head (HRPE301), Belt (AR),
Capstan/Reel Motor (M601) ................................... 6
3. ADJUSTMENTS
3-1. Mechanical Adjustments .......................................... 7
3-2. Electrical Adjustments ............................................. 7
4. DIAGRAMS
4-1.IC Pin Function Descriptions .................................... 10
4-2. Block Diagrams –Tape Section– .............................. 11
4-3. Block Diagrams –Tuner Section– ............................ 12
4-4. Printed Wiring Board –Main Section (SideA)– ...... 13
Printed Wiring Board –Main Section (Side B)–.......14
4-5. Schematic Diagram –Main Section (1/2)–............... 15
4-6. Schematic Diagram –Main Section (2/2)–............... 16
4-7. Printed Wiring Board –Sub Section (SideA)–......... 17
4-8. Printed Wiring Board –Sub Section (Side B)–......... 18
4-9. Schematic Diagram –Sub Section–.......................... 19
4-10.IC Block Diagrams.................................................. 20
5. EXPLODEDVIEWS
5-1. Cabinet (Rear) Section .............................................22
5-2. Cassette Lid Section................................................. 23
5-3. Mechanism Section-1 (MT-WMGX410-175)..........24
5-4. Mechanism Section-2 (MT-WMGX410-175)..........25
6. ELECTRICAL PARTS LIST .................................. 26

3
WM-GX410
SECTION 2
DISASSEMBLY
Note: Follow the disassembly procedure in the numerical order given.
2-2. CABINET (CENTER), CABINET FRONT ASSY
• This set can be disassembled in the order shown below.
2-1. DISASSEMBLY FLOW
2-2. CABINET FRONT ASSY
(Page 3)
2-3. MAIN BOARD
(Page 4)
SET
2-2. CABINET (CENTER)
(Page 3)
2-4. MECHANISM DECK
(MT-WMFX410-175)
(Page 4)
2-5. CASSETTE HOLDER SUB ASSY
(Page 5)
2-7. REC/PB/ERASE HEAD (HRPE301),
BELT (AR), CAPSTAN/REEL MOTOR
(M601) (Page 6)
2-6. SUB BOARD
(Page 5)
1 two screws
2 screw (M1.4)
2 screw (M1.4)
5 two claws
7 fiexible board (CN301)
8 screw (M1.4 toothed lock)
3 two claws
4 two claws
SP402
SP401
cabinet front assy
9 four screws (tapping B2.0)
cabinet (center)
Align three switches and
three knobs
Note on installation
6

4
WM-GX410
2-3. MAIN BOARD
cabinet (center)
MAIN board
8 joint cover
4 two screws
5 screw
6 plate connector (L)
2 remove nine soldering
3 two screws (M1.4 toothed lock)
1 flexible board
(CN305)
7
2-4. MECHANISM DECK (MT-WMFX410-175)
2 three screws (IB lock)
5 hand strap
4 plate, connector (R
)
3 screw
mechanism deck (MT-WMGX410-175)
6
1

5
WM-GX410
2-5. CASSETTE HOLDER SUB ASSY
2-6. SUB BOARD
cassette holder sub assy
cabinet (center)
projection
projection
1 remove from projection
2 remove from projectio
n
4 spring, torstion
3
2 four screws
3 three claws
sub board
Align five switches and
five knobs
Note on installation
cabinet front ass
y
1 remove two soldering
4

6
WM-GX410
2-7. REC/PB/ERASE HEAD (HRPE301), BELT (AR), CAPSTAN/REEL MOTOR (M601)
Attaching belt (AR)
3 belt (AR)
4 two screws (M1.4)
1 two screws (M1.4)
5 M601 (CAPSTAN/REEL motor)
2 HRPE301 (REC/PB/ERASE head)

7
WM-GX410
3-2. ELECTRICAL ADJUSTMENTS
Note:
1. Supplied voltage: 3 V (DC)
2. Switch and control position
VOLUME control : outputlevel< >:AEP
FM -20dBm <-30dBm>
AM-30dBm <-40dBm>
AVLS switch : NORM
REC TIME/PLAY MODE switch : NORMAL
ISS switch : 1
TAPE DECK SECTION 0 dB = 0.775 V
TestTape
Type Signal Used for
WS-48A 3 kHz, 0 dB Tape SpeedAdjustment
Tape Speed Adjustment
Procedure:
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
demagnetizer.
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
supply 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)
set
test tape
WS-48A
(3kHz, 0dB) 16Ω
frequency counte
r
iheadphone jack (J401)
SECTION 3
ADJUSTMENTS
1
9
C337
R354
R605
R607 R601
C339
TH601
RV602 C606
C336 R3
R423
RV601
C333
R606
C410
R609
Q342
R336
C221
R338
R337
R344
R309
C332
C70
Q336
8
4
R340
FB303
3
06
R339
C340
Q335
CN303
C338
R341
Q334
R335
413
C86
EC
C
B
B
RV602: Tape Speed Adjustment
(4.8cm/s)
RV601: Tape Speed Adjustment
(2.4cm/s)
RV601
RV602
[MAIN BOARD] (SIDE B)
1. Set REC TIME switch (S706) to NORMAL (4.8cm/s).
2. Playback the center portionof tape in REVmode, adjustRV602
sothat the reading on the frequency counterbecomes 3,000 Hz.
3. Set REC TIME switch (S706) to DOUBLE (2.4cm/s).
4. Playback the center portionof tape in REVmode, adjustRV601
sothat the reading on the frequency counterbecomes 1,500 Hz.
Specifications:
NORMAL (4.8cm/s) : 2,985Hz - 3,015Hz
DOUBLE (2.4cm/s) : 1,493Hz - 1,507Hz
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: Main board (See page 9)

8
WM-GX410
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 RF SSG
set
30% amplitude modulation by
400Hz signal.
Output level : as low as possible
Put the lead-wire
antenna close to
the set. 16
Ω
i
headphone jack (J401
)
level meter
FM RF SSG
set
30% amplitude
modulation by
1kHz signal.
Deviation : 75kHz
Output level : as low
as possible
0.01
µ F16
Ω
i headphone jack (J401
)
main board
TAP66
level meter
(side B)
no mark : 9kHz step
< > : 10kHz step
TP333
(LPF)
TP8
TP3
Q308
C43
R313
Q307
R3
C71
R10
C17
R6
9
R13
R312
C16 C8
C12
R18
Q3
RV1
C31
9
R22
[MAIN BOARD] (SIDE A)
TP (LPF)
digital voltmete
r
(DC range)
AM FREQUENCY COVERAGE ADJUSTMENT
Adjust parts Frequency Reading on digtal
voltmeter
L7 <530kHz> 1.1 ±0.4V
531kHz
Confirmation <1,710kHz> 5.0 ±0.6V
1,602kHz
AM TRACKING ADJUSTMENT
Adjustment for a maximum reading on level meter.
L3 <620 kHz> 621 kHz
CT1 <1,400 kHz> 1,404 kHz
FM FREQUENCY COVERAGE CONFIRMATION
Frequency display Reading on digtal voltmeter
Confirmation 87.5 MHz Standard value : 4.2 ±0.5 V
Confirmation 108 MHz 9.1 ±0.5 V
FM TRACKING ADJUSTMENT
Adjustment for a maximum reading on level meter.
L4 87.5 MHz
Confirmation 108 MHz
±
Adjustment Location: Main board (See page 9)

9
WM-GX410
Adjustment Location:
L3 : AM Tracking Adjustment
L7 : AM Frequency
coverage
adjustment
RV1 : FM VCO adjustment
RV2 : AM IF adjustment
L4 : FM Tracking Adjustment
CT1 :
AM Tracking Adjustment
RV602 : Tape Speed Adjustment (4.8cm/s)
RV601: Tape Speed Adjustment (2.4cm/s)
MAIN BOARD (SIDE B)
MAIN BOARD (SIDE A)
FMVCO Adjustment
Procedure:
TP(LPF)
TP8
Q308
C43
R313
Q307
R3
C56 R10
C17
R6
C89
R13
R312
C16 C8
C12
R18
Q3
RV1
C31
RV2
C49
R22
++
TP8
(IC1 7 pin)
1
µ F
frequency
counter
10k Ω
[MAIN BOARD]
(SIDE A)
1. Connect the resistor 10kΩbetween TP8 and TP(LPF).
2. Connect the frequency counter to TP8 (IC8 7pin).
3. Set FUNCTION switch to FM.
4. Tune the set in 98MHz.
5. Adjust RV1 so that the reading on the frequency counter be-
comes 76 kHz.
Specifications: 75 kHz - 77 kHz
-3 -4
S302
R
908
C
ND
CND
T
P
TAP66
4
FB305
FB306
C40
C905
C5
2
C920
C35
REC
PB
t
FM RF SSG
[MAIN BOARD] (SIDE B)
Carrier frequency : 98MHz
Deviation : None
Output level : 562
µ V (55dB)
TAP66
(ANT)
0.01
µ FTAP66
Adjustment Location: Main board (See page 9)

10
WM-GX410 SECTION 4
DIAGRAMS
Pin No. Pin name I/O Description
1XOUT O Connected to 75kHz Crystal oscillator
2TEST 2 I For Test (Connected to GND)
3MECHA REC I REC mode signal input
4 to 6 PA3 to 1 I Control key inputs
7KO2 O Key source signal output
8KO1 O Key source signal output
9 REC CTRL O REC control signal output L: REC
10 AMP ON O Power amplifier on/off control signal output
11 SD I SD input
12 COMP I COMP input
13 PUSH I Tuning dial (S701) common switch signal input
14 MECHA TAPE I Tape on/off detection signal input
15 RADIO ON O Radio on/off control signal output
16 BAND O Band select signal output
17 TUNING-B I Tuning dial (S701) B phase signal input
18 TUNING-A I Tuning dial (S701) A phase signal input
19 MUTE O Mute signal output
20 BEEP O Beep signal output
21 BACK UP VOLTAGE I Back-up voltage detection signal input
22 BATT LEVEL I Battery voltage detection signal input
23 VERSION I Destination select signal input
24 GND — Ground terminal
25 TUNER MODE INPUT I Tuning mode select switch (S707) signal input
26 2X INPUT I Tape speed select switch (S706) signal input
27 PAUSE I Pause switch (S702) signal input
28 HOLD I HOLD switch (S705) signal input
29 SHUTDOWN O Not used (open)
30 MOTOR BRAKE O Motor brake control signal output
31 MOTOR CTL O Motor control signal output
32 to 44 S13 to S1 O LCD driver segment output terminal
45 to 48 COM4 to 1 O LCD driver common output terminal
49 TU O Output for tuning voltage generator
50 to 53 DBR4 to 1 I For LCD power supply booster
54 RESET I System reset signal input
55 HCTR NC — Not used (open)
56 VDD — Power supply terminal
57 FM IN I FM VCO input
58 AM IN I AM VCO input
59 GND — Ground terminal
60 E0 O Tuning signal (PWM) output
61 AIN I LPF amplifier input
62 AOUT O LPF amplifier output
63 TEST 1 I For test (connected to ground)
64 XIN I Connected to 75kHz Crystal oscillator
4-1. IC Pin Function Descriptions
IC701 (SYSTEM CONTROL/LCD DRIVE) LC723483W-9C33-E

WM-GX410
1111
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
25 31
27
3
7
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)
R-CH
+B
VREF
VREF
T331
+B
+B
PB/REC
SELECTOR
REFERENCE
REC DRIVE
INPUT (L)
B
IC302
(2/2)
(Page 12)
REC
SG A
REF
D406
VREF
L
L
R
FWD
HRPE301
REC/PB/ERASE HEAD
R
ISS
SWITCH
Q335
LCD701
LIQUID
CRYSTAL
DISPLAY
MOTOR
BRAKE
Q601
BIAS
OSC
Q334,336
ISS
S703
FM AM
S711
OFF
RADIO
S713
S708
TAPE SPEED (2.4cm/S)
RV601
TAPE SPEED (4.8cm/S)
RV602
S701 (ROTALY)
3
2
1
S707
S702
VCC
TUNER
MODE MOTOR CTRL
30
MOTOR BRAKE
10
AMP ON
14
2 322
MECHA TAPE
BATT LEVEL
9
REC CTRL
21
BUCKUP
VOLTAGE
18
TUNING-A
17
TUNING-B
13
PUSH
CBA
COM
+B
PAUSE
X2 INPUT
KO2
KO1
K1
K2
K3
COM1
COM4
S706
48
45
44
32
S1
S13
SYSTEM
CONTROL
IC701(1/2)
MOTOR DRIVE/
SPEED CONTROL
IC301
IC302 (1/2)
BATT LEVEL
DETECT
IC702
S302(3/4)
REC
PB
S303(4/4)
FWD
REV
RADIO ON
MUTE
C
GATE
SWITCH
Q356
MIC
VCC
VCC +B
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”
(IEC DESIGNATION LR6)
2PCS, 3V
+
-
J501
TUNE MODE
MANUAL
PRESET
+B
PAUSE
ON
OFF
TUNING/
ENTER
RECTIME/
PLAY MODE
NORMAL
DOUBLE
S303(3/4)
FWD
REV
S303(2/4)
FWD
REV
S302(2/4)
REC
PB
REC/PB AMP
Q603
Q604
Q342
AMP ON
S302(4/4)
REC
PB
S705
HOLD
ON
OFF
28
26
HOLD
MECHA REC
MIC-L
R-CH
D
TO AMP
SECTION
(Page 12)
MIC-R
S303
(1/4)
S302
(1/4)
NC NC
TO AMP
SECTION
(Page 12)
TO AMP
SECTION
(Page 12)
4-2. BLOCK DIAGRAM –TAPE SECTION –
•R-ch is omitted due to same as L-ch
•Signal path.
N: MIC
E: TAPE PLAY
a: TAPE REC

WM-GX410
1212
4-3. BLOCK DIAGRAM –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
5
20
4
13
37
12
11
29 2 1
LEVEL
DETECT
MPRG VCO
RV1
FM VCO
RV2
AM IF
IFCT
ATT
D5
BUFFER
Q3
TUNER B+
SWITCH
Q307, 308
MIC
PB IC302
(1/2)
(Page 11)
B
TUNER
INPUT (L) LINE
OUT (L)
RV301
AVLS
Q405
MUTE
Q101
R-CH
R-CH R-CH
R-CH
S304
SOUND BOOST
OFF
ON
S704
AVLS
NORM
LIMIT
REC
SG
A
S1
MONO
ST
Q358
SWITCH
Q2
+
-
+
-
+
-
57 58 62 12 11 16 19 20151 64
BEEP
MUTE
BAND
SD
COMP
RADIO ON
XIN
XOUT
AOUT
AM IN
FM IN
X701
75kHz
SYSTEM CONTROL
IC701
(2/2)
RADIO ON
MUTE
C
IC401
IC302 (2/2)
PRE AMP
IC1
L4
D2
L3
AM FERRITE BAR
ANTENNA
CT1
D1
L7
L6
D4
L4
FM TRACKING
L3, CT1
AM TRACKING
L701 D702
TUNER VCC
+B
J401
i
SP401
SPEAKER
(L-CH)
SP402
SPEAKER
(R-CH)
DFTO MPXI LOUT
ROUT
PLT2
COMP
TUNE
BAND
RADIO ON
LPF OUT
MUTE
R-CH
AM
OSC
FM/TV
OSC
AUDIO LEVEL
DETECT
Q357
VDD
VDD
BTL
POWER AMP
VOLUME
TUNER VCC
VCC
J302
Flat Mic
MIC
(PLUG IN POWER)
MIC301
61 60
49
TU
A IN
EO
VCC
38
PLT1
AUIDO
LEVEL
ADJUSTMENT
Q104
17
4
10
8
ANT1
FM
TELESCOPIC
ANTENNA
MIC-L
MIC-R
RF AMP
Q902,903
FM MODE
Q359
Q360
Q105
AMP ON
L7
AM
FREQUENCY
COVERAGE
FM/AM/TV FRONT-END,
IF, DET, FM MPX
Q406
VDD
MUXCTRL
SHUTDOWN
HP-IN
+OUTA
-OUTA
-INA
D
TO TAPE
SECTIO
(Page 11)
TO TAPE
SECTION
(Page 11)
TO TAPE
SECTION
(Page 11)
AMP
Q302
MUTE
Q111
•R-ch is omitted due to same as L-ch
•Signal path.
F: FM
e: AM
N: MIC

WM-GX410
1313
4-4. PRINTED WIRING BOARD – MAIN SECTION (SIDE A) –
TP(LPF)
TP8
TP449
TP344
R218
R324
R106
TP346
R410
C601
R402
R330
R422
C488
Q357
Q308
C485
R602
R171
R416
C486
C490
Q502
C608
Q604
C609
C24
R614
C43
R313
R212
R905
R907
R764
C602
Q307
Q201
R190
R403
R415
Q101
RV301
C408
S601
(TAPE POWER)
R283
R3
C374
C409
C335
C56
J1
C71
R207
R10
C401
C17
R254
C356
R408
R14
R11
C907
R211
R608
Q404
R152
C254
C251
C204
C151
R251
R272
C908
R744
R261
C507
R428
R912
Q903
R6
C187
R502
C906
C89
R421
C909
C913
R426
Q902
R401
R151
R409
R359
R13
R316
C403
R440
R290
L900
R933
R446
Q105
C614
R270
C29 C55
D1
R904
C60
R260
C501
R418
R903
R312
C912
R209
C203
C16 C8
FB1
C12
R291
R18
Q3
T331
RV1
C80
C30
R204
C31
L4
RV2
Q501
C49
C903
R909
C416
AEP
R433
R191
D13
R437
C911 R352
C417
C415
C62
R22 D502
C418
R323
R438
R427
13
(13)
1-689-822-
VOL
N
(SIDE A)
BOARDMAIN
EC
C
B
B
23 4 5 6 7
A
1
B
C
D
Note on PrintedWiring Boards:
•X: parts extracted from the component side.
•®: Through hole.
•: Pattern from the side which enables seeing.
•Abbreviation
CND : Canadian
EA : Saudi Arabia
CH : Chinese
JEW : Tourist
9E : No Indication of country of origin
Ref. No. Location
D1 D-1
D13 A-2
D502 B-5
Q3 B-3
Q101 C-5
Q105 C-7
Q201 C-5
Q307 A-3
Q308 A-3
Q357 C-7
Q404 B-2
Q501 B-6
Q502 B-6
Q604 B-6
Q902 A-2
Q903 A-2
• Semiconductor
Location

WM-GX410
1414
PRINTED WIRING BOARD – MAIN SECTION (SIDE B) –
-1
-2
-3 -4
-1 -2
-3 -4
S302
S303
C414
C504
J501
L7
W
V
U
COM
W
V
U
COM
M601
CAPSTAN/REEL
MOTOR
SP401
SPEAKER
(L-CH)
SP402
SPEAKER
(R-CH)
L-CH
R-CH
L-CH
R-CH
FWD
FWD
REV
REV
ERASE
1
1
7
6
2
3
4
5
8
9
9
1
10
11
20 21
30
31
40
DC IN 3V
(SIDE B)
BOARDMAIN
13
(13)
1-689-822-
ASUB
BOARD
(Page 17)
FWD REV
t
TP335
R908
R5
R920 CND,5E
CND,5E
TP1
D5
R165
R206
TAP66
R326 AEP
C53
Q359
C337
C357
R156
R447
R320
FB401
R503
R354
R417
Q358 R406
R321
C405
CN301
R315
R613
R605
C612
R607 R601
Q603
R604
C154
Q602
C607
1
30
C605
C339
R612
R17
TH601
RV602
C256
C606
IC301
Q601
C336 R310
R319
R603
D501
R423
C491
C34
C502
C290
C23
R271
R424
R108
C57
RV601
Q406
S703
S703
R413
R610
S704
S704
S1
S1
L6
C333
R504
R606
C252
C410
IC401
R609
J9
C358
Q405
R404
C205
R353
R258
J3
C101
R160
R430
R155
FB305
R159
Q342
C105
R205
Q354
C352
R305
C104
R256
IC302
C255
R307
R336
R154
Q355
C354
C155
R157
C201
R360
C152
R8
C103
C221
R259
Q356
R163
R257
Q360
FB306
C156
Q302
C40
FB301
C190
R338
D2
R425
R104
R337
R101
R4 C5
C21
R344
R273
R208
R309
D4
C332
R611
C603
R15
R158
R615
Q104
Q204
Q336
R317
C905
C18
C32
C529
C84
R103
C920
R340
Q303
R322
C4
R164
R252 R311
FB201
FB303
FB302
FB101
C406
D406
R342
R301
C25
J2
J4
R306
C20
R105
R308
C6 C9
C7
C11
C604
R339
C613
R507
C340
C334
C19
R162
Q335
C26
CN303
C338
R318
R341
IC1
Q334
CT1
R335 C342
R300
Q2
R23
R325
R432
R435
R378
C489
C413
R434
C341
C915
C61
C35
C503
R441
R505
C355
C28
C407
C419
R436
C86
Q111
Q211
R111
C420
R357
R358
R356
R107
C487
C111
L3
AM
FERRITE-BAR
ANTENNA
(PLUG IN POWER)
MIC
i
J401
J302
ANT1
FM
TELESCOPIC
ANTENNA
AVLS
LIMIT
NORM
t
ISS
2
1
t
3
t
FM MODE
MONO
ST
t
HRPE301
RECORD/
PLAYBACK
ERASE
HEAD
REC
PB
t
EC
C
B
B
DRY BATTERY
SIZE "AA"
(IEC DESIGNATION LR6)
2PCS, 3V
23 4 5 6 7 89
A
1
B
C
D
E
Ref. No. Location
D2 B-7
D4 B-6
D5 B-7
D406 D-6
D501 A-3
IC1 B-6
IC301 B-3
IC302 D-7
IC401 C-5
Q2 A-5
Q104 D-4
Q111 C-7
Q204 C-4
Q211 D-8
Q302 D-7
Q303 D-7
Q334 D-3
Q335 D-2
Q336 D-3
Q342 C-2
Q354 D-6
Q355 D-6
Q356 D-6
Q358 D-2
Q359 D-4
Q360 D-4
Q405 C-6
Q406 C-5
Q601 B-4
Q602 B-4
Q603 B-4
• Semiconductor
Location
Ver 1.1

WM-GX410
1515
4-5. SCHEMATIC DIAGRAM – MAIN SECTION (1/2) –
R603
R604
R152
L4
R254
R357
R155
R3
R6
R159
R157
FB302
R378
FB303
FB1
R162
R272
R903
R907
R912
TP1
R904
R905
R261
R909
FB306
TAP66
R204
R104
C9
C30
J4
R4
D2
D4
D1
C12
R602
R607
C606
R101
R103
C357
R160
R211 R212
C906
C57
C55
C60
R920
R260
R359
R273
R270
R358
C358
R209
R23
R8
L900
R933
D13
L6
R356
Q356
Q354
Q355
Q603
Q601
Q602
Q3
Q2
Q307
Q902
Q903
C26
C56
C28
C25
C915
C920
C909
C907
C903
C913
C912 C35
C911
C356
C203
C156
C101
C154
C152
C4
C5
C86
C529
C71
C905
C410
C8
C11
C7
C6
C21
C607
C608
C613
C604
C612
C603
C251
C151
S1
ANT1
FM
TELESCOPIC
ANTENNA
M601
C17
RV1
D5
R5
R908
IC1
RV601
RV602
R606
TH601
R608
R605
R609
R313
Q308
C62
C19
C18
C23
C16
RV2
C39
C20
R10
C89
C31
C61
C32
R13
R22
R15
C34
C40
C24
R11
R14 L7
CT1
L3
R601
C605
R614
R615 R610 R612
R613
R611
C614
C602 C609
R17
R312
J1
C254
R316
R300
R258
C256 R353
C255
R257
C204
R207
R252
IC302
J9
R352
R301
R158
C352
C355
R156
C104
R107
C103
R154
C105
C155
C201
R256
R360 C354
R259
C252
C205
FB305
C187
C43
R18
C49 C601
C29
J302
C908
CN301
IC301
R151
R251
TP333
C84
TP8
1M
1M
1k
FM RF
10k
47k
2.2k
2.2k
2.2k
10k
0
1k
4.7k
2.2k
1k
4.7k
4.7k
220
220
4.7k
1k
TU TEST
(B)
220
220
22 4V TA
10 4V TA
0
470
MA2S357
MA2S357
KV1520-TL
4.7 4V TA
1M
100k
2.2 6.3V TA
22k
220k
1F
100k
220k 100k
1000p
3p
3p
22p
2.2k
2.2k
1k
2.2k
1k
47 4V
22k
100k
10k
330nH
1k
DIODE MA3SE02
30n
10k
2SA1586
SWITCH
RN1311
GATE
2SC4116
GATE
RN1311
MOTOR
BRAKE
2SA1745
MOTOR
BRAKE
2SA1745
MOTOR
BRAKE
2SC3931
BUFFER
RN1311
SWITCH
2SA1586
TUNER B+
SWITCH
2SC4083
RF AMP
2SC3931
RF AMP
100p
1000p
47p
4p
100p
1000p
0.022
0.022
1000p
1000p
1000p 22p
1000p
47 4V
0.01
4700p
2.2
1
0.01
0.1
0.1
100p
470p
0.01
1000p
0.01
0.47
1
470p
1
0.01
0.47
0.22
0.047
0.022
0.047
0.022
0.047
0.047
10
4V
TA
4.7k
47k
1k
CXA1960Q
4.7k
4.7k
0
3.3K
3900PPM
0
1k
10k
1k
RN1311
TUNER B+
SWITCH
1000p
0.022
0.022
22
4V
TA
4.7
4V
TA
100k
1000p
1
4.7k
0.01
0.01
220p
1000p
220
470
100k
0.01
0.01
0.022
10k
100k
10p
1k
0.047
10k
22k 47k 47k
100
100
0.047
0.022 0.47
10k
47k
0
1
47
100k
10k
4700p 10k
1
0
47 4V TA
220k
1k
CXA2500N-T4
0
1k
100k
10k
4.7
4V
TA
47
6.3V
TA
1k
47
4V
TA
220k
0.01
10k
2200p
1
2.2
1k
4.7k 4.7
4V
TA
10k
0.01
2200p
0.01
1000p
22k
0.01 22
4V
TA
4700p
1000p
30P
LB1979V-TLM-E
1k
1k
(LPF)
0
L-CH
R-CH
AUDIO-L
AUDIO-R
VCC
TAPE SPEED
R/P SW
BOOST
MIC VCC
BEEP
REC
MUTE
TAPE
MECHA REC
BATT
AMP ON
TAPE SPEED
VDD
SIG 1
SIG 2
REFERENCE
PB/REC SEL
GND
B+
*
*
FM MODE
TRACKING
AM
L3,CT1 AM
FREQUENCY
COVERAGE
L7
TRACKING
L4
FM
TAPE SPEED 2.4cm/s
TAPE SPEED 4.8cm/s
MOTOR
CAPSTAN/REEL
FM VCO
MIC
(PLUG IN POWER)
MA2SP0100L
0
CND,5E
AEP,EA,9E,CH,JEW
*D5
CND,5E
CND,5E
PRE AMP,
REC/PB AMP
FM/AM/TV FRONT-END,
IF,DET,FM MPX
MOTOR DRIVE/
SPEED CONTROL
AM IF
AM
ANTENNA
FERRITE-BAR
Ver 1.1

WM-GX410
1616
4-6. SCHEMATIC DIAGRAM – MAIN SECTION (2/2) –
FB201
FB301
T331
R504
CN303
S302(4/4)
S302(2/4)
R341
R339
R338
S704
R406
R408
FB401
S303(4/4) S303(2/4)
S303(3/4)
J3
J2
R422
R433 R434
Q104
Q204
TAP60
RV301
R309
R337
R335
Q404
C340
D406
R744
R764
D501
R505
R507
R503
S302(3/4)
S302(1/4)
Q303
Q302
R319
R307
R321
R322
R271
R410
R404
R401
R403
R430
R415
R418
R417
R447
R310
R218
R165 R425
R342
R354
R502
R320
R340
R305 R311
R436
R424
R306
R191
R190
R317
R108
R208
R171
R106
R206
R324
R326
R440
R308
R426
Q111 Q211
R409
R111
D502
R421
R330
C111
1µF
R427
Q501
Q604
Q334
Q336
Q335
Q405
Q101
Q201
Q357
Q358
Q360
Q406
Q359
Q105
C501
C503
C502
C504
C333
C334
C335
C336
C337
C338
C339
C488
C487
C490
C486
C374
C491
C489
C413
C485
S601
J501
J401
SP402
SP401
IC401
C420
R323
R325
C419
R105 R163
R164
R205
R318
R315
C290
C190
C403 R423
R283
R435
C415
R438
R437
C416
C414
C53
FB101
C221
R290
R291
C401
C405
R416
R446
R428
R402
R441
C418
C409
C417
C408
C332
R336
R344
S703
TP405
C507
C80
R432
R413
Q502
C341 C342
C406
C407
Q342
100k
9P
R/P SW
R/P SW
47k
47k
1k
AVLS
220k
220k
F/R SW F/R SW
F/R SW
0
0
1M
1k 1k
2SK2009
2SK2009
TU TEST
(B)
VOLUME
220
10k
47
2SC4213-AB-TE85L
1F
1SS355
470
220
1SS367
220k
47k
22k
R/P SW
R/P SW
2SA1162-G
2SA1162-G
470k
220k
470k
220k
2.2k
1M
100k
10k
10k
100k
2.2k
2.2k
22k
47k
220
1M
2.2k
4.7k
4.7k
47k
1k
47 47
220k
1M
1k
470k
220k
22k
10k
10k
2.2k
0
2.2k
100k
2SK2009 2SK2009
1M
1M
1SS367
1M
1M
F
1M
2SA1362
REG
RN1311
BUFFER
2SD596-T1DV4
BIAS OSC
2SK2009
BIAS OSC
2SC4207-YGRTE85L
ISS SWITCH
2SC4213-AB-TE85L
AVLS
2SK2009
MUTE
2SK2009
MUTE
2SA1586
AUDIO LEVEL
DETECT
2SC4116
BUFFER
2SK2009
BUFFER
2SC4116
BUFFER
DTA144TUA-T106
SWITCH
2SK2009
SWITCH
1000p
47 6.3V TA
47 6.3V TA
470 4V
1000p
47
6.3V
TA
2200p
220p
470p
0.01
0.01
0.0047
0.01
10p
0.01
1
10p
0.1
2.2
0.0047
(TQPE POWER)
SPEAKER
(R-CH)
SPEAKER
(L-CH)
LM4873MTX NOPB
1
1k
1k
220
4V
22k 47k
47k
22k
22k
2.2k
2.2
2.2
47
6.3V
10k
10k
100k
100
4V
10k
10k
100
4V
470
4V
1000p
1
220k
470k
47
47
22k
47k
100k
100k
100k
0.1
2.2
0.1
2.2
0.01
10
0
SHUTDOWN
47
6.3V
TA
100p
1M
47k
2SC4207-YGRTE85L
1
6.3V 1
6.3V
0.47 16V
220
6.3V
2SA1586
REC DETECT
R-CH
L-CH
AUDIO-R
AUDIO-L
VCC
BOOST
MIC VCC
BEEP
R/P SW
REC
MUTE
TAPE
VDD
BATT
AMP ON
MECHA REC
SIG 1
SIG 2
REFERENCE
PB/REC SEL
GND
B+
*
*
*
*
*
*
FWD REV
NORMAL
AVLS
DC IN 3V
AEP
EXCEPT AEP
AEP
EXCEPT AEP
470
10
*R106,206
220
47
*R165,218
AEP
AEP
EXCEPT AEP
470
22
AEP
R324,326
BTL
POWER AMP
HEAD
ERASE
PLAYBACK/
RECORD/
HRPE301
DRY BATTERY
SIZE"AA"
2PCS,3V
(IEC DESIGNATION LR6)
LIMIT
•See page 14 for IC Pin Function Description.
Ver 1.1

WM-GX410
1717
4-7. PRINTED WIRING BOARD – SUB SECTION (SIDE A) –
A
MAIN
BOARD
(Page 14)
13
(13)
1-689-823-
TP713
R708
IC701
S701
C717
R743
S702
C724
R712
C734
R718
R730
R760
C751
R706
C711
R709
R715
R711
R719
R716
C720
R710
C727
R766
R729
R722
R713
C721
C712
C750
R731
R736
C703
R763
C726
R726
C705
JC702
C706
CN701
C718
C752
R732
C707
C708
R737
R751
R752
ON OFF
t
PAUSE .
TUNING/
ENTER
MIC301
Flat Mic
1
16
17
32
33
48
49 64
(SIDE A)
BOARDSUB
23 4 5 6
A
1
B
C
D

WM-GX410
1818
PRINTED WIRING BOARD – SUB SECTION (SIDE B) –
R727
R702
D702
C704
S707
R721 R720
C719
C725
R705
R707
R717
R738
L702
R703
C709
R741
C710
R754
R771
IC702
C715
C702
L701
S705
S706
S304
S711
S708
S713
C713
R704
C738
R714
LCD701
LIQUID
CRYSTAL
DISPLAY
OFF ON
HOLD
t
.
NORMAL DOUBLE
REC TIME/PLAY MODE
t
MANUAL PRESET
TUNE MODE
t
OFF ON
SOUND BOOST
t
TV
AM
RADIO OFF
(SIDE B)
BOARDSUB
13
(13)
1-689-823-
X701
23 4 5 6
A
1
B
C
D

WM-GX410
1919
4-8. SCHEMATIC DIAGRAM – SUB SECTION –
R731
R705
R704
R703
R702
R717
R718
L701
R715
R709
R707
R719
R736
C712
R732
S711 S713
R771
LCD701
JC702
R754
R741
R737
R738
D702
C718
C717
C708
C706
C705
C721
C725
C710
C711
C738
C709
C727
C726
C734
C724
C707
C751
IC702
S705 S702
C703
S304
S701
S708
S707
S706
X701
MIC301
R708
R727
R710
R712
R713
C702
C704
R706
R743
C752
R760 R751
C750
R726
R722
R711
R716 R729
R730
R763
C720 C713
C715
L702
22µH
220µH
C719
R721
R720
R766
R752
R714
CN701
IC701
100k
10k
10k
10k
10k
10k
1M
1k
1k
1k
1k
10k
22 4V TA
100
100k
0
2.2k
1k
2.2k
22k
MA111
0.47
1000p
1
0.1
0.1
1000p
0.1
0.1
0.1
1
0.01
0.01
0.01
0.22
0.1
0.1
1
XC62RP1602MR
10
4V
TA
75kHz
0
100k
100k
1k
4p
10p 1k
1k
10
4V
TA
2.2k 2.2k
0.47
220k
100k
1k
220k 220k
100k
4.7k
0100p
100p
0.047
100k
100k
1k
0
100k
30P
LC723483W-9C34-E
*
HOLD PAUSE
PLAY MODE
RECTIME/
ON
OFF
SOUND BOOST
TUNING/
ENTER
NORMAL
DOUBLE
Fiat Mic
4.7k
22k
47k
100k JEW
9E
AEP,EA,CH
CND,5E
*R708
BATT LEVEL
DETECT
SYSTEM CONTROL
LIQUID CRYSTAL DISPLAY
Ver 1.1

WM-GX410
2020
4-9.IC Block Diagram
IC1 CXA1960Q
IC302 CXA2500N-T4
+
–
12
13
14
19
15
TVIN
MREF
GND
FMIB
IFCT
NC
FMIN
FMR
O
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
8910
VCO
STID
MCNT
GND
VCC
14
2356
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 (L)
PB OUTPUT (L)
REC DRIVE INPUT (L)
REC DRIVE OUTPUT (L)
AGC TIME CONSTANT
TAPE/TUNER SELECTOR
1 2
PB PRE INPUT (L)
PB NF (L)
3 4 5
PB EQ SWITCH (L)
TUNER INPUT (L)
LINE OUTPUT (L)
6 7 8 9
10 11 12
REC DRIVE OUTPUT (R) VCC PB/REC SELECTOR
13 14 15
PB OUTPUT (R) PB NF (R) PB PRE INPUT (R) MIC INPUT (R) GND
20 21 22 23 24
TUNER INPUT(R) PB EQ SWITCH (R)
18 19
REC DRIVE INPUT (R) LINE OUTPUT (R)
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
IC301 LB1979LV-TLM-E
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
75
4
31 2 6 8 9 10
1112131415161820 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