SHARP GX-CD1200W Service Manual
GX-CD1200W
SERVICE MANUAL
No. S5039GXCD1200
PORTABLE CD STEREO
COMPONENT SYSTEM
GX-CD1200W(BK)
MODEL GX-CD1200W(GL)
• In the interests of user-safety the set should be restored to its original
condition and only parts identical to those specified should be used.
CONTENTS
Page
SPECIFICATIONS ...............................................................................................................................................................1
VOLTAGE SELECTION.......................................................................................................................................................2
AC POWER SUPPLY CORD AND AC PLUG ADAPTOR ................................................................................................... 2
FITTING OF DIAL POINTER ...............................................................................................................................................2
NAMES OF PARTS ............................................................................................................................................................. 3
DISASSEMBLY....................................................................................................................................................................4
REMOVING AND REINSTALLING THE MAIN PARTS.......................................................................................................5
ADJUSTMENT .....................................................................................................................................................................6
SCHEMATIC DIAGRAM / WIRING SIDE OF P.W.BOARD...............................................................................................10
NOTES ON SCHEMATIC DIAGRAM ................................................................................................................................ 18
TYPES OF TRANSISTOR AND LED.................................................................................................................................18
VOLTAGE ..........................................................................................................................................................................18
WAVEFORMS OF CD CIRCUIT........................................................................................................................................ 19
TROUBLESHOOTING (CD SECTION) ............................................................................................................................. 20
FUNCTION.........................................................................................................................................................................24
PARTS GUIDE / EXPLODED VIEW
SPECIFICATIONS
General
Power source: AC 110-127 V/220-240 V, 50/60 Hz
DC 15 V [“D” size (UM/SUM-1, R20 or HP-
2) battery x 10]
Power consumption: 31 W
Output power: PMPO; 200 W (Total)
(AC operation)
MPO; 50 W (25 W + 25 W)
(AC operation)
RMS; 25 W (12.5 W + 12.5 W)
(DC operation, 10 % T.H.D.)
Input terminal: Mixing microphone(monaural); 600 ohms
Output terminal: Headphones; 16-50 ohms
(recommended; 32 ohms)
Dimensions: Width; 300 mm (11-13/16")
Height; 262 mm (9-1/2")
Depth; 220 mm (8-11/16")
Weight: 4.1 kg (9.1 lbs.) without batteries
Compact disc player
Type: Compact disc
Signal readout: Non-contact, 3-beam semi-conductor laser
pickup
Audio channels: 2
Filter: 8-times oversampling digital filter
D/A converter: 1-bit D/A converter
Wow and flutter: Unmeasurab le
(less than 0.001 % W. peak)
Radio section
Frequency range: FM; 88 - 108 MHz
SW1; 2.3 - 7.3 MHz
SW2; 7.3 - 22 MHz
MW; 526.5 - 1,606.5 kHz
Tape recorder section
Frequency response: 60 - 12,000 Hz (Normal tape)
Signal/noise ratio: 40 dB (TAPE 1, recording/playback)
55 dB (TAPE 2, playback)
Wow and flutter: 0.15 % (WRMS)
Motor: DC 9 V electric governor
Bias system: AC bias
Erase system: Magnet erase
Speaker section
Type: 2-way type
Speakers: 12 cm (4-3/4") free-edge speaker x 2
Tweeter x 2
Maximum input power: 25 W
Rated input power: 12.5 W
Impedance: 8 ohms
Dimensions: Width; 235 mm (9-1/4")
Height; 262 mm (10-5/16")
Depth; 220 mm (8-11/16")
Weight: 1.8 kg (4.0 lbs.)/each
Specifications for this model are subject to change without
prior notice.
SHARP CORPORATION
– 1 –
This document has been published to be used
for after sales service only.
The contents are subject to change without notice.
GX-CD1200W
FOR A COMPLETE DESCRIPTION OF THE OPERATION OF THIS UNIT, PLEASE REFER
TO THE OPERATION MANUAL.
VOLTAGE SELECTION
Before operating the unit on mains, check the preset voltage. If the voltage is different from your local voltage, adjust the voltage
as follows: Slide the voltage selector with a screwdriver to the appropriate voltage number (AC 110V-127V or AC 220V-240V).
AC POWER SUPPLY CORD AND AC PLUG ADAPTOR
QACCE0007AW00
QACCL0002AW00
FITTING OF DIAL POINTER
1. Remove the Main PWB, the Graphic Equalizer PWB, the
Volume PWB and the Fine Tuning PWB. (See Figure 4-2
in the "Disassembly" on page 4.)
2. Remove the dial pointer guide and PWB.
3. Insert the dial pointer from , lead it under , hang it on
the tuner gear and then pass it through .
4. Replace the Main PWB, the Graphic Equalizer PWB, the
Volume PWB and the Fine Tuning PWB.
5. Rotate the tuning knob in the arrow direction until it stops.
(Set the tuner variable capacitor to "0" point (F-LOW
state).)
6. Adjust the dial pointer so that its stopper becomes the
Figure 2-2 position. (Adjust the engagement of the pointer
gear and the tuner gear to get the minimum space between
the PWB and the stopper.) This position is the "0" point.
7. Screw up the PWB and the dial pointer guide.
A
B
C
QACCA0001SJ00
QPLGA0250AFZZ QPLGA0253AFZZ
"0" Point
Dial Pointer(211)
Front Cabinet
Tuning Knob
C
Dial Pointer Guide
(218)
PWB
Tuner
Gear
B
Fine Tuning
PWB
Screw(601)
ø3x10mm
A
Dial Pointer(211)
Graphic Equalizer
PWB
Volume PWB
– 2 –
Main PWB
Figure 2-1
Make the minimum space.
PWB
Dial Pointer
Stopper
Pointer Gear
Tuner Gear
Main PWB
Front Cabinet
Variable Capacitor
Figure 2-2
NAMES OF PARTS
44
45
46
47
48
1. CD Compartment
2. CD Eject Button
3. Track Number Indicator
4. (CD) Play Indicator
5. (CD) Pause Indicator
6. Extra Bass Control
7. Graphic Equalizer Controls
8. Power/(TAPE 2) Play Direction Indicators
9. (CD) Track Down/Review Button
10. (CD) Track Up/Cue Button
11. (CD) Stop Button
12. (CD) Play/Pause Button
13. Fine Tuning Control
14. Built-in Microphone
15. Volume Control
16. Headphone Socket
17. Mixing Microphone Socket
18. Function Selector Switch
19. (TAPE 1) Cassette Compartment
20. Tuning Control
21. FM Stereo Indicator
22. Surround Indicator
23. Surround Switch
24. Band Selector Switch
25. Dubbing Speed/Built-in Microphone/FM Mode Switch
26. (TAPE 2) Cassette Compartment
27. (TAPE 1) Record Button
28. (TAPE 1) Play Button
29. (TAPE 1) Rewind Button
30. (TAPE 1) Fast Forward Button
31. (TAPE 1) Stop/Eject Button
32. (TAPE 1) Pause Button
33. (TAPE 2) Reverse Mode Switch
34. (TAPE 2) Play Button
35. (TAPE 2) Fast Wind Buttons
36. (TAPE 2) Stop/Eject Button
37. (TAPE 2) Direction Switch
72189
6
14
15
16
17
18
19
28 29 30 31 32
27
(Continued)
4
5
33 34
3
10241125122613
35 36
GX-CD1200W
1
2
20
22
23
37
38. FM/SW Telescopic Rod Aerial
39. Beat Cancel Switch
40. Speaker Terminals
41. AC V oltage Selector
42. AC Power Input Socket
43. Battery Compartment
44. Tweeter
45. Bass Reflex Duct
46. Woofer
47. Speaker Release Lever
48. Speaker Wire
38
39
40
41
42
43
– 3 –
GX-CD1200W
Rear Cabinet
(E1)x3
ø3x10mm
(E2)x2
ø4x16mm
(E4)x2
ø3x10mm
Power
Transeformer
Voltage Selector
AC Socket
(E3)x1
Power
PWB
Terminal B
PWB
Terminal A
PWB
(E5)x2
DISASSEMBLY
Caution on Disassembly
Follow the below-mentioned notes when disassembling
the unit and reassembling it, to keep it safe and ensure
excellent performance:
1. Take cassette tape out of the unit.
2. Be sure to remove the power supply plug from the wall
outlet before starting to disassemble the unit and remove
the batteries from the unit.
3. Take off nylon bands or wire holders where they need
to be removed when disassembling the unit. After
servicing the unit, be sure to rearrange the leads where
they were before disassembling.
4. Take sufficient care on static electricity of integrated
circuits and other circuits when servicing.
MAIN UNIT
STEP REMOVAL PROCEDURE FIGURE
1 Front Cabinet/ 1. Battery Compartment Lid. 4-1
Rear Cabinet ................................. (A1)x1
2. Screw ................... (A2)x5
3. Screw ................... (A3)x3
4. Socket .................. (A4)x1
2 CD Player Unit 1. Screw................... (B1)x2 4-2
2.Socket ................... (B2)x1
3 Main PWB/ 1. Knob..................... (C1)x1 4-3
Graphic Equalizer 2. Socket .................. (C2)x3
PWB/ 3. Screw ................... (C3)x5
Volume PWB/ 4. Screw ................... (C4)x2
Fine Tuning PWB 5. Mic ....................... (C5)x1
4 Tape mechanism 1. Open the cassette holder. 4-3
2. Screw ................... (D1)x6
5 Power PWB/ 1. Screw ................... (E1)x3 4-4
Terminal A PWB/ 2. Screw ................... (E2)x2
Terminal B PWB 3. Bracket................. (E3)x1
4. Screw ................... (E4)x2
5. Hook..................... (E5)x2
6 CD Servo PWB/ 1. Screw ................... (F1)x7 5-1
CD Control PWB/ 2. Socket .................. (F2)x3
7 CD Mechanism 1. Screw ...................(G1)x1 5-1
SPEAKER UNIT
STEP REMOVAL PROCEDURE FIGURE
1 Speaker 1. Screw ................... (H1)x5 5-2
2. Front Panel ..........(H2)x1
3. Screw ................... (H3)x4
Main PWB
(B1)x2
ø3x10mm
CD SERVO PWB
Front Cabinet
Main PWB
(C4)x2
ø3x10mm
(D1)x4
ø3x10mm
(B2)x1
(C3)x5
ø3x10mm
Figure 4-2
Fine Tuning
PWB
(C2)x3
Figure 4-3
Volume
PWB
Graphic
Equalizer
PWB
(C5)x1
(D1)x2
ø3x10mm
CD Player Unit
Front Cabinet
(C1)x1
Nat
Washer
Open
Cassette
Holder
(Left/Right)
Tape
Mechanism
(A3)x3
ø3x20mm
(A2)x3
ø3x6mm
(A2)x1
ø3x6mm
(A1)x1
Figure 4-1
Rear
Cabinet
(A4)x1
Front
Cabinet
(A2)x1
ø3x6mm
Figure 4-4
– 4 –
GX-CD1200W
CD Servo
PWB
(F1)x1
ø3x10mm
(F1)x3
ø3x10mm
Switch PWB
(F1)x3
ø3x10mm
(F2)x1
Figure 5-1
(G1)x3
ø3x10mm
CD Control PWB
(F2)x2
CD Mechanism
CD Player Unit
Front Panel
(H2)x1
Woofer
Main Unit
Tweeter
(H3)x4
ø3x10mm
Speaker
Release
Lever
Figure 5-2
Speaker Cord
Holder
Speaker Box
Speaker
Cord
Driver
(H1)x5
ø4x16mm
REMOVING AND REINSTALLING THE MAIN PARTS
CD MECHANISM SECTION
Perform steps 1,2,6 and 7 of the disassembly method to
remove the CD mechanism.
How to remove the pickup (See Fig. 5-3.)
1. Remove the hooks (A1) x 2 pcs., to remove the CD
Mechanism Cover (A2) x1 pc.
2. Remove the screws (A3) x 2 pcs., to remove the shaft (A4)
x1 pc.
3. Remove the stop washer (A5) x1 pc., to remove the gear
(A6) x 1 pc.
4. Remove the pickup.
Note : (Figure 5-1 and Figure 5-3)
After removing the connector for the optical pick-up from
the connector, wrap the conductive aluminium foil around
the front end of connector to protect the optical pick-up from
electrostatic damage.
(A1)x2
(A3) x2
ø2.6 x6mm
Pickup
Shaft
(A4) x1
(A2)x1
Figure 5-3
Gear
(A6) x1
CD
Mechanism
Stop
Washer
(A5) x1
– 5 –
GX-CD1200W
TAPE MECHANISM SECTION
Perform steps 1, 2, 3 and 4 of the disassembly method to
remove the mechanism block.
How to remove the record / playback, playback
and erase heads (See Figs. 6-1 and 6-2.)
1. Remove the screws (A1) x 2 pcs., to remove the record/
playback head.
2. Remove the hooks (A2) x 2 pcs., toward the center position
as shown in Fig. 6-1. and then extract the erase head
upward.
3. Remove the screws (B1) x 2 pcs., to remove the playback
head.
Note:
After replacing the heads and performing the azimuth adjustment, be sure to apply screw lock.
How to remove the pinch roller (See Fig. 6-3.)
1. Carefully bend the pinch roller pawl in the direction of the
arrow <A> , and remove the pinch roller (C1) upwards.
How to remove the motor (See Fig. 6-4.)
1. Remove the belt.
2. Remove the screws (D1) x 4 pcs., to remove the motor
bracket.
3. Remove the screws (D2) x 3 pcs., to remove the motor.
Note:
When mounting the motor, pay attention to the motor mounting angle.
Hook
(A2) x2
Erase
Head
(B1) x1
ø2x7mm
(A1) x1
ø2x7mm
(A1) x1
ø2x3mm
Figure 6-1
(B1) x1
ø2x3mm
TAPE 1
Record/Playback
Head
TAPE 2
Playback
Head
How to remove the belts (See Fig. 6-5.)
1. Remove the main belt (E1) x 1 pc., at the tape 1 side from
the motor pulley.
2. Remove the main belt (E2) x 1 pc., at the tape 2 side from
the motor pulley.
3. Remove the REW/FF belt (E3) x 2 pcs., from the REW/FF
roller.
4. Put on the belts in the reverse order of removal.
Note:
When putting on the belt, ascertain that the belt is not twisted,
and clean it.
Motor
TAPE 2
REW / FF
Belt
(E3) x1
TAPE 2
Main Belt
TAPE 1
Main Belt
Motor
Main
Belt
(E1) x1
TAPE 1
Pinch Roller
(C1)
( D1 ) x2
ø2 x 4mm
Figure 6-2
Figure 6-3
Motor
Pinch Roller
Pawl
<A>
( D1 ) x2
ø2 x 4mm
Motor
Bracket
( D2 ) x3
Special Screw
Main
Belt
(E2) x1
Figure 6-5
REW / FF
Belt
(E3) x1
– 6 –
Motor
Figure 6-4
Motor
Bracket
ADJUSTMENT
10 pF
1M ohm
10K ohm
TO FREQUENCY
COUNTER
Pin 13 of IC2
Pin 21 of IC2
FET: 2SK212
(or Other 2SK Type FET.)
G
D
S
0.1 µF
GX-CD1200W
MECHANISM SECTION
• Driving Force Check
Torque Meter
Play: TW-2412 Tape 1: Over 60 g
Specified Value
Tape 2: Over 50 g
• Torque Check
Torque Meter
Play: TW-2111 30 to 70 g.cm 27 to 60 g.cm
Fast Forward: TW-2231 Over 55 g.cm 55 to 120 g.cm
Rewind: TW-2231 Over 55 g.cm 55 to 120 g.cm
Specified Value
Tape 1 Tape 2
• Head Azimuth
Test Tape
MTT-114 Headphones Socket
Instrument Connection
(Load resistance: 32 ohms)
• Tape Speed (Normal only)
Test Tape
MTT-111 Tape 1,2:VR102 3,000 ± 60 Hz Headphones
Adjustment
Point
Specified
Value
Instrument
Connection
Socket
(Load resistance:
32 ohms)
DECK SECTION
• Bias Oscillation
• Beat Cancel Switch: C
Adjustment Point Specified value Instrument
L301 100 kHz + 4 kHz Pin 1 of CNS102
Specified Value
Beat Cancel A: 104 ± 4 kHz
B: 94 ± 4 kHz
C: 100 ± 4 kHz
• Playback Amplifier Sensitivity Check
Test tape
MTT-118 2.5 V ± 3 dB Speaker terminal
Specified value Instrument Connection
(Load resistance: 8 ohms)
Connection
TUNER SECTION
fL: Low-range frequency
fH: High-range frequency
• FM IF/RF
Test Stage
FM IF L9 Input: FM Antenna
FM Detection L10 Output:Pin 9 of IC2
FM Band fL: L1 Input: Antenna
Coverage fH: TC1 Output: Headphone Socket
FM Tracking fL(88.0 MHz): L2 (Load resistance:
Specified Value/
Adjusting
Point
fH(108 MHz): TC2 32 ohms)
• AM IF/RF
Test Stage
AM IF L11
MW Band fL: L6
Coverage fH: TC3
MW Tracking fL(600 kHz): L3
SW1 Band fL(2.3 MHz): L7
Coverage fH(7.3 MHz): TC5
SW1 fL(2.6 MHz): L4
Tracking fH(6 MHz): TC6
SW2 Band fL(7.3 MHz): L8
Coverage fH(22 MHz): TC7
SW2 fL(8.5 MHz): L5
Tracking fH(19 MHz): TC8
Specified Value/
Adjusting
Point
Input: Antenna
Output: Pin 9 of IC2
Output: Headphone Socket
fH(1,400 kHz):TC4
• VCO Frequency
Adjustment
Point
VR1 76 kHz ± 200 Hz Pin 13, Pin 21 and ground
Specified value Instrument Connection
Note:
After preparing the test circuit shown in Fig. 7, connect the Pin
13, Pin 21 and ground of the IC2 with the test circuit, and
measure the value.
Instrument
Connection
Instrument
Connection
Input: Antenna
(Load resistance:
32 ohms)
of IC2
Figure 7 VCO FREQUENCY TEST CIRCUIT
– 7 –
GX-CD1200W
SW401
SW1 BAND
COVERAGE
SW2 BAND
COVERAGE
SW103
SW1
FM TRACKING
fH
L8
L7
L2
TC4
TC2
TC5
fH
fL
TC7
fH
fL
TC6
TC3
TC1
SW1
TRACKING fH
MW
TRACKING fH
MW BAND
COVERAGE fH
fH
FM BAND
COVERAGE
fL
MW BAND
COVERAGE fL
MAIN PWB
L6
VCO
VR1
CF1
FM
TRACKING fL
AM IF
L11
CF3
12
13
IC1
9
IC2
CF2
1
21
24
L10
FM DETECTION
FM IF
L1
L9
L4
L3
TC8
L5
fH
SW2
TRACKING
fL
SW1
TRACKING fL
MW
TRACKING fL
MAIN PWB
CNP103
IC502
TAPE SPEED
VR102
CNP501
SPEAKER TERMINALS
Figure 8 ADJUSTMENT POINTS
– 8 –
Q603
GX-CD1200W
CD SECTION
Since this CD system incorporates the following automatic adjustment function, when the pickup is replaced, it is not necessary
to reajust it.
Since this CD unit does not need adjustment, the combination of PWB and laser pickup unit is not restricted.
TEST MODE
Start
While holding down the "PLAY" button, move the FUNCTION/POWER switch to "CD".
(To serial No.006XXXXX)
While holding down the "STOP" button, move the FUNCTION/POWER switch to "CD".
(From serial No.007XXXXX)
Note
1. When the CD LID switch is in the OFF position, (CD LID is open) the unit will be able to enter the test mode.
However, can use the "UP/CUE" and "DOWN/REVIEW" button only.
2. You can only move the pickup.
3. The LCD display should be the same as it is for normal CD operations.
Operation
The use of the "UP/CUE" button will move the pickup to the outermost position.
The use of the "DOWN/REVIEW" button will move the pickup to the innermost position.
LCD MODE
Start
Display
After connecting of the 10kΩ resistor between IC802 27 pin and GND and holding down the "PLAY" button, move
the FUNCTION/POWER switch to "CD".
LASER LIGHTING CONFIRMATION
1. Remove the front cabinet according to the disassembly method.
2. Short the TP of the Figure 9 to turn on the CD LID SW 810.
3. While holding down the "PLAY" button, move the FUNCTION/POWER switch to "CD".
4. Open the CD LID and press the PLAY button. The laser lights up for a few seconds. (At this time, the pickup lens moves up
and down and adjusts the focus to check if there is a disc or not.)
CD CONTROL PWB-C2
SW801
PLAY/
PAUSE
SWITCH PWB-C3
SW810
OPEN/CLOSE
TP
FW1
R847
SW802
STOP
10
13
10
12
12
12
R861
R846
R863
821
R822
R844
C825
R848
R849
FW801
L802
FW801
C824
30
C823
31
SW804
REVIEW/
TRACK DOWN
1
20
25
35
40
1
15
1
5
10
IC802
60
100
95
65
16
C852
SW803
CUE/
TRACK UP
1
2
2
3
6
5
4
804
3
3
1
Q803
R858
Q804
11
1
CNS804
LCD801
2345 178 6
15
14
4
17
C846
C855
C847
R839
90
85
81
80
75
70
R865
X801
R832
C844
C843
CD SERVO PWB-C1
C853
C848
R835
C845
L803
C840
C849
R836
R840
C850
C858
R857
L801
C851
Figure 9
– 9 –
GX-CD1200W
V
5
T
W
C
G
C
E
0
0
FM SIGNAL
A
ROD ANTENNA(253)
B
C
CNS804
6
5
CNP804
TO CD
D
SERVO
PWB
P13 11-G
E
F
G
H
SIDE-A
L-CH
SIDE-B
SIDE-A
R-CH
SIDE-B
L-CH
R-CH
ERASE HEAD
TAPE1
RECORD/PLAYBACK HEAD
4
3
2
1
J151
MIC JACK
MIC151
BUILT-IN
MICROPHONE
TAPE2
PLAYBACK HEAD
SW504-A
TAPE2 DIRECTION
A
B
A
B
SW504-B
TAPE2 DIRECTION
1
2
3
1
2
3
4
PLAYBACK SIGNAL
R4
7
330K
C13
0.022
C12
3P(CH)
0V
TC1
VC1
22P(CH)
L9
R3
47
1
CF2
FM IF
SW1-E
C19
BAND
330P
SELECTOR
FM
MW
SW1
SW2
C20
0.0022
VC3
C27
0.0047
R166
560
+B
0V(0V)
R168
10K
0V(0.7V)
D163
DS1SS133
R169
Q153
10K
MIC AMP.
KTC3199 GR
( ):RECORD
(0V)
0V
C113
4.7/50
R101
100
C111
R109
0.015
6.8K
(ML)
R121 10K
R107
10K
C107
C109
47/10
330P
C112
0.015
(ML)
C110
47/10
MATAL
NF
OUT
MATAL
NF
OUT
C108
330P
R108
10K
R110
6.8K
R102
100
R302
100
SW101-E
RECORD/
PLAYBACK
R303
C301 100/10
100
R105
180K
PRE
A/B
OUT
MIX
PRE
OUT
OUT
6 7 8 9 10 11 12
R106
180K
C114
4.7/50
R
P
C18
10/16
R5
100
3
2
TC3
C21
5P
(UJ)
TC5
TC7
R122
10K
R7
820K
24
AM OSC
1
NORMAL
+B
VCC
R301
330
C22
0.022
23
STB
FM IF IN
C24
0.022
C25
0.022
L7 SW1 OSC.
L8 SW2 OSC.
C26
0.022
SW103-A
DUBBING
SPEED/MIC
HIGH
MIC
+B
C127
330/10
M/N GND1
R123
10K
R124
10K
SW1-A
BAND
SELECTOR
SW1-C
BAND
SELECTOR
BI804
6
5
4
3
2
1
CNS101
CNS102
D1
DS1SS133
SW1-B
BAND
SELECTOR
CF1
FM BAND PASS
FILTER
1 2 3
MW
SW1
SW2
FM
MW
SW1
SW2
VC4
FM
MW
SW1
SW2
R352
R-CH
47K
GND(A)
L-CH
A-GND
D-GND
+8V(SERVO)
0V(0V)
3
Q154
KRA102M
MIC AMP.
C151
0.33/50
R151
2.2K
CNP101
1
2
3
1
2
3
4
CNP102
SW102
BEAT CANCEL
C B A
C307
150P
MW/SW1 SIGNAL
RF AMP
0.9V
1
1.6V
C5
0.001
FM
TRACKING
C4
24P
L2
(CH)
C7
0.0047
TC4
TC6
TC8
R351
47K
( ):CD FUNCTION
0V(9V)
2
0V(9V)
0V
1
0V
R153
1.3V
2.2K
R152
C154
4.7K
47/10
C152
10/16
L103
22mH
C131
120P
SW101-A~D
RECORD/
PLAYBACK
R
SW101-D
SW101-B
150P
R P
C134
150P
C132 120P
L104
22mH
C305
0.0015
(ML)
C306
390P
2
TC2
R1
10
C6
0.0047
L3,4 MW/SW1
BAR ANTENNA
R353
27K
TA2011S
MIC AMP.
C137
0.0015(ML)
R135 10K
P
R P
SW101-C
SW101-A
R P
L301
BIAS OSC.
C304
0.022
FM
R354
27K
1
C133
IC1
TA7358AP
FM FRONT END
MIX
7.1V
1.6V
C2
5P(CH)
VC2
C8
0.022
L3 MW
L4 SW1
L5 SW2
ANTENNA
IC151
0V
4 3 2
0.9V
C155
10/16
R154
560
R136 10K
C138
0.0015(ML)
R306
47
C303
0.0056
(ML)
6.4V
OSC
8
9
6 543
7V
7.2V
7.2V
C10
15P(CH)
R2
33
L1
FM
C11
OSC.
D2
DS1SS133
FM IF
C9
0.022
SW1-D
FM
BAND
MW
SELECTOR
SW1
SW2
C14
5P(CH)
TC9
FINE
TNNING
C15
0.022
R165
10K
6V
7
C157
1.9V
1/50
5
( ):HIGH
6
C156
100/10
0V(0V)
R161
1M
R173
10K
(0.7V)
Q156
KTC3199 GR
LINE AMP.
C101
C103
470P
470P
C105
330P
24 23 22 21 20 19 18 17 16 15 14 13
CH2/A
CH2/B
CH1/BCH1/A
1 2 3 4 5
IC101 TA8189N
RECORD/PLAY AMP.
C106
330P
C102
470P
C104
470P
Q301
KTC3203 Y
BIAS OSC.
( ):RECORD
(3V)
R305
27K
(0.7V)
(0.1V)
C302
0.0022
R304
(ML)
10
MAIN PWB-A1/VOLUME PWB-A3/FINE TUNING PWB-A4
C23
220/10
DETECTION
C17
0.022
22
21
+B
IC2
AM RF
LA1805
FM/AM IF MPX.
AM MIX
L11
AM IF
L6 MW OSC.
SW101-F
BAND SELECTOR
P
R172
10K
D152
DS1SS133
R100
150
C115
4.7/50
C128
2.2/50
R113
120K
REC
OUT
REC
OUT
R114
120K
C129
22/16
C116
4.7/50
R116
680
R115
C118
680
REC
NF
REC
NF
10/16
FM
L10
RECORD SIGNAL
FM STEREO
C31
0.0047(ML)
R8
R9
3.9K
12K
C32
0.0082(ML)
19 18 17 16 15 14 13 12
AM IN
AM OUT
IF AD
DET OUT
GND
AM IF
7
5
8
6
CF3
455KHz
3
C37
AM IF
0.012
(ML)
R12
2
1K
SW1-F
BAND
SELECTOR
R13
100
C30
0.022
FM
C43
220P
MW
SW1
SW2
C119
0.033
(ML)
R112
22K
C160
22/16
C123
0.01
C125
4.7/50
C126
4.7/50
FM
MW
SW1-G
BAND
SELECTOR
SW1
SW2
D156
DS1SS133
D158
DS1SS133
R177
1K
C124
0.01
AGC
4 3 2
C29
22/16
FM
MW
SW1
SW2
R10 47
R11
47
R
C158
47/25
R170
33K
R111
22K
R117
330K
R119
100
C117
10/16
C121
330P
REC
IN
REC
IN
C122
330P
R120
100
R118
330K
20
FM DET
1
D154
DS1SS133
ALC
GND
C120
0.033
(ML)
C34
470P
MPX IN
IF AD
C39
1/50
R15
10K
D165
DS1SS133
C159
47/25
D162
DS1SS133
R132
1.2K
C35
3.3/50
C33
3.3/50
L-CH
9
R17
2.7K
SW1-H
BAND
SELECTOR
C42
0.022
D164
DS1SS133
R171
33K
R174
22K
R133
82K
R131
1.2K
R134
82K
+B
R14
100K
10
SW103-B
FM MODE
MO/ST
R-CH
C40
1/50
R16
10K
R18
2.7K
+B
+B
FM MONO
C36
0.0015
N.C.
VCO
AM/FM
11
C38
0.012
(ML)
VR1
10KB
VCO
TP1
VCO
76KHZ
C41
1/50
R20
10
R129 150K
TUNER
TUNER
SW1
TRACKING
R19
15K
+B
+B
R130 150K
CD
TAPE
SW501-A
FUNCTION
SELECTOR
CD
TAPE
SW501-B
FUNCTION
SELECTOR
SW501-C
FUNCTION
SELECTOR
TUNER
TAPE
9V
Q601
KRC102M
CD
R-CH
1
L-CH
0V
R181
1K
fH
TC6
SW1
COV
fL
L4
Q181
KTC3199
GRAPHI
EQUALIZ
R183
330K
C181
2.7V
1/50
0.9V
0.3
C183
R1
220P
22
R1
C184
22
220P
C182
2.7V
1/50
0.9V
R128
22K
R127
22K
R184
330K
0.3V
Q182
KTC3199
GRAPHI
EQUALIZ
+B
+B
R511
10K
Q
K
S
R182
1K
0V
23
• NOTES ON SCHEMATIC DIAGRAM can be found on page 18.
1
2
34 5
Figure 10 SCHEMATIC DIAGRAM (1/4)
– 10 –
6
fHfLTC6
L4
R183
330K
C181
1/50
C182
1/50
182
K
R184
330K
R127
22K
R128
22K
SW1 BAND
COVERAGE
Q181
KTC3199 GR
GRAPHIC
EQUALIZER
2.7V
0.9V
C183
220P
C184
220P
2.7V
0.9V
0.3V
Q182
KTC3199 GR
GRAPHIC
EQUALIZER
+B
0.3V
R185
220
R186
220
R188
3.9K
C186
1/50
R187
3.9K
R180
560
fH
fL
C185
1/50
C180
100/10
TC5
L7
fH
TC4
MW
TRACKING
FM
TRACKING
fL
L3
GRAPHIC EQUALIZER PWB-A2
+B
R203
2.2K
R205
4.7K
C201
R201
4.7/50
1K
+B
R200
330
C200
100/10
R202
1K
R206
3.3K
+B
23 21 19 17 15 13 11
6.9V
0V
24 22 20 18 16 14 12 10
C202
C222
4.7/50
4.7/50
R204
2.2K
C203
1/50
C204
1/50
GX-CD1200W
TC1
R259
120
R260
120
fH
L1
fL
fH
7
7
A : 0V
B : 0.7V
TC3
fL
L6
5
4 3 2 1
6
LED253
R257 10K
5
4 3 2 1
6
LED254
R258 10K
LED501,502
POWER DIRECTION
LED502
A : 0.8V
B : 0.2V
Q505
KTC3199 GR
LED CONTROL
0V
FM BAND
COVERAGE
LED257
LED255
LED256
LED258
+B
LED259
LED260
fH
R251
6.8K
R255
120
R256
120
R252
6.8K
LED1
STEREO
fL
C251
1/50
C259
0.0039
(ML)
C260
0.0039
(ML)
TC7
L8
C252
1/50
R518 1K
SURRUND
LED401
MW BAND
COVERAGE
IC202 LB1403N
LEVER METER DRIVER
9
8
C253
0.022
R253 39K
C255
10/16
IC203 LB1403N
LEVER METER DRIVER
9
8
C254
0.022
R254 39K
C256
10/16
LED501
R519
1K
R520
10K
R521
10K
TC8
C215
6.5V
0.0015
0.0056
C210
0.082
(ML)
VR204
100K(B)
(2KHz)
VR203
100K(A)
(500Hz)
C213
0.33/50
(ML)
6.5V
5.9V
(ML)
fH
L5
fL
GRAPHIC
EQUALIZER
VR204
100K(A)
(2KHz)
C209
0.082
(ML)
C211
0.0015
(ML) C207
9 7 5 3 1
5.9V
6.5V
5.9V
6.5V
5.9V
6.5V
8 6 4 2
C216
0.0056
(ML)
C218
C214
0.47/50
0.33/50
VR202
VR203
50K(B)
100K(B)
(100Hz)
(500Hz)
GRAPHIC
EQUALIZER
SW2 BAND
COVERAGE
VR205
100K(A)
(10KHz)
C205
0.01
(ML)
470P
6.5V
5.9V
5.9V
C220
0.039
(ML)
R208
3.3K
C257
47/25
IC201
BA3822LS
GRAPHIC
EQUALIZER
fH
TC2
SW2
TRACKING
fL
L2
X-BASS
VR202
50K(A)
(100Hz)
R207
4.7K
R211
1K
3.2V
3.2V
4.4V
C221 4.7/50
2.6V
4.4V
2.6V
C208
R212
1K
C219
0.039
6.5V
6.5V
470P
C206
0.01
(ML)
VR205
100K(B)
(10KHz)
X-BASS
C217
0.47/50
(ML)
5.9V
5.9V
C212
C411
47/10
R417
22K
R418
22K
R415
3.3K
C413
0.001
(ML)
R419
3.3K
R420
3.3K
C414
0.001
(ML)
R416
3.3K
1
2
3
4
5
6
7
8
9
R440
470
VOLUME
C415
0.15
(ML)
C416
0.15
(ML)
CNP103
1
2
3
4
5
6
7
8
9
CNS103
VR401
VR401
50K(B)
VOLUME
50K(B)
R425
1K
R426
1K
R429
100K
R427
4.7K
C418
22/16
R428
4.7K
0.6V
0.6V
Q404
KTC3199 GR
POWER MUTE
C510
3300/25
+
–
B
A
SW904
TAPE2
DIRECTION
C419
4.7/50
0V
0V
Q403
KTC3199 GR
0V
C420
0V
4.7/50
+B
M501
MOTOR
M
SW901
TAPE1 MAIN
SW902
TAPE2 MAIN
SW903
TAPE2 PLAY
SW401
SURROUND
R441
15K
C423
10/16
POWER MUTE
C424
R442
15K
47/25
1
1
2
2
CNS601
CNP601
TERMINAL B
PWB-A6
IC402
LA4663
POWER AMP.
0V
2
L-CH
6
0V
3
14.3V
1
R-CH
0V
4
5
7
6.4V
15V
R431
27K
+B
POWER PWB-A7
C652
0.022
C653
0.022
C425
6.9V
0.1(ML)
+OUT1
14
0V
13
6.9V
-OUT1
12
C427
0.1(ML)
C426
6.9V
0.1(ML)
+OUT2
9
0V
10
6.9V
-OUT2
11
C428
0.1(ML)
8
15V
C433
0.022
D651
TS4B03GM
C651
0.022
C654
0.022
BATTERYS DC 15V
["D" SIZE (UM/SUM-1,
R20 or HP2) battery x 10]
R433
2.2
R435
2.2
R434
2.2
R436
2.2
C429
10/16
C430
10/16
F601
T4A L 250V
TERMINAL A
PWB-A5
CNP501
SPEAKER
TERMINALS
+
L-CH
–
–
R-CH
+
R437
120
R438
J401
120
HEADPHONES JACK
SW601
VOLTAGE SELECTOR
AC110V-127V
AC220V-240V
T601
POWER
TRANSFORMER
SP403
TWEETER
8 Ohm
L-CH
SP401
WOOFER
8 Ohm
SP402
WOOFER
8 Ohm
R-CH
SP404
TWEETER
8 Ohm
SO601
AC SOCKET
AC110V-127V/
AC220V-240V,
50/60Hz
+B
+B
R411
330
C505
47/16
0V(0V)
C401
0.0068(ML)
C402
OUT
9V
Q603
KTD2058 Y
VOLTAGE
REGULATOR
0.7V(0V)
Q503
KTC3199 GR
SWITCHING
0.7V
(0V)
C511
0.022
C403
10/16
3.8V
R403
10K
R401
100K
C405
0.0033
C406
0.0033
(ML)
R402
100K
R404
10K
3.8V
C404
0.0068(ML)
10/16
3.8V
IC501
3 1
KA7809AP
C506
IN
2
0.022
0V
Q602
0V
KRA102 M
SWITCHING
1
7.5V
8.1V
C603
0.022
DZ601
C602
DZ8.2BSB
100/10
9V
C508
100/16
R513
L501
10K
47µH
R514
100K
7.9V
(7.9V)
0V(7.9V)
TAPE SPEED
0V(0V)
IC501,502:VOLTAGE REGULATOR
+B
+B
C604
220/10
( ):HIGH SPEED
Q502
KTC3199 GR
SWITCHING
0V(0.7V)
R511
10K
R512
10K
3.8V
R405
2.7K
(ML)
R406
2.7K
15V
R602
100
VR102
470
5
6
2
3
OUT
3
C509
0.022
15V
23
IC401
KIA4558P
7.5V
8
OPE AMP.
R407
12K
C407
4.7/50
C408
4.7/50
R408
12K
4
0V
15V
C513
1/50
R601
270
C601
0.022
IC502
KA7809P
2
0V
8.5V(8.5V)
Q504
KTA1271 Y
SWITCHING
R516
3.6K
8.5V
(6.3V)
R515
120
3.8V
7
R409
12K
R410
12K
3.8V
1
IC401
KIA4558P
OPE AMP.
SW501-D
FUNCTION
SELECTOR
IN
1
15V
R412
10K
R413
10K
C514
1/50
C412
47/10
C409
1/50
C410
1/50
78 9101112
Figure 11 SCHEMATIC DIAGRAM (2/4)
– 11 –
GX-CD1200W
9
0
8
7
R
R
M
A
SW810
OPEN/CLOSE
SWITCH PWB-C3
VCC
C3A
LD
2/1VCC
TR+
FO+
FO-
TR-
MON
C2A
C4A
VR1A
B
C
D
PICK-UP UNIT
M
M
+
–
+
–
M802
SPINDLE
MOTOR
M801
E
SLED
MOTOR
SW702
PICKUP IN
CD MOTOR PWB-B
SERIAL NO.
F
PICK-UP UNIT 92LHPC1LASY 92LHPC1LXASY
To serial
No.00404990
From serial
No.00504991
BI802/CNS802 QCNWN0027BGZZ QCNWN0032BGZZ
C801 VCQYKA1HM103K NOT USED
R802 VRD-ST2CD222J NOT USED
R891 NOT USED VRD-ST2CD683J
R892 JUMPER VRD-ST2CD563J
R893 JUMPER VRD-ST2CD683J
R894 NOT USED VRD-ST2CD683J
R895 JUMPER VRD-ST2CD683J
R896 JUMPER VRD-ST2CD563J
G
+5V
R-
R+
F+
F-
PD
VR
LD
SP+
PU-IN
GND
B
C
G
SPSL+
SL-
7
6
E
5
A
4
3
F
2
1
1
2
3
4
5
6
7
8
CNP803
6
5
4
3
2
1
FW802
CNS802
7
6
5
4
3
2
1
CNS801
1
2
3
4
5
6
7
8
CNS803
6
5
4
3
2
1
( ):STOP
Q801
KTA1266 GR
SWITCHING
0.2V(1.5V)
C802
3.6V
0.022
R896
56K
R895
68K
R892
56K
R893
68K
R891
68K
R894
68K
(4.4V)
BI802
7
6
5
4
3
2
1
BI801
1
2
3
4
5
6
7
8
BI803
6
5
4
FM-
3
SLT+
2
DM+
DMFM+
E
A
B
F
C
TR+
TR-
FC+
FC-
GND
PD
VR
LD
1
SLT-
+B
CD SERVO PWB-C1
R802
IC801
2.2K
TA2109F
SERVO PRE AMP.
4.3V(5V)
R801
22
C817
100/10
C815
47/10
5V
RFN
VCC
1
GND
IC801
2.1V
FNI
2
2.1V
2.1V
2.1V
VG4
12
VG1
10
11
3
4
5
6
7
8
9
FPI
TPI
TNI
MDI
LDO
SEL
TEB
2VRO
TEN
TEO
3.3V
VO4+
VO1+
3.6V
R851
2.2K
C814
0.047
3.3V
VO4-
VO1-
3V
RFO
8
AGCI
RFGC
RFGO
RFIS
RFRP
VRO
FEN
FEO
SBAD
TRO
0V0V0V
GND
GND
GND
0V
0V
+B
+B
GND
2.1V
2.1V
(2.1V)
2.1V
(2.1V)
0.18V
(0V)
3.6V
(4.4V)
2.5V
(0.3V)
2.8V
4.3V
2.1V
R811
22K
C813
47/10
7.4V
2.1V
2.1V
N.C.
30 29 28 27 26 25 24 23 22 21 20
VCC
VIN4
VREF
IC803 LA6541D
FOCUS/TRACKING/SPIN/SLED
MT
VIN1
VCC
N.C.
1 2 3 4 5 6 7 8 9
7.4V
2.2V
0.9V
C806
220/10
C805
0.022
C816
0.022
2.1V
24
23
0V
C804
2P(CH)
1.6V
(0.3V)
22
0V
21
0V
20
C819
2.2V
19
0.1(ML)
2.1V
18
3.2V
(1.1)
17
2.1V
16
15
2.1V
2.1V
R803
82K
14
2.0V
13
(1.1V)
C822
0.047
2
3
FOO
3.3V
3.3V
2.1V
19 18 17 16
VG3
GND
VO3-
VO3+
GND
VG2
VO2+
VO2-
10 11 12 13 14 15
0V
3.4V
3.3V
2.1V
R852
2.2K
R804
68K
R805
39K
R806
2.7K
C820
0.1
(ML)
R807
1K
9
C818
56P
C801
0.1
C821
47/10
R853
2.2K
C807
0.047
2.1V
4.8V
N.C.
N.C.
CD
RES
VIN3VIN2
REG IN
REG OUT
5V
2.1V
6.8V
(6.8V)
Q802
KTA1271 Y
VOLTAGE
REGULATOR
FMO
DMO
10
5V
6.7V
+B
5V(5V)
C825
47/10
C
4
C832
47/10
+B
C854
C863
0.0068
47/10
C841
0.047
C842
C834
470P
0.047
C837
0.047 (
C838
0.047(M
C839
0.047(M
C843
47/10
C835
470P
C836
0.047
(ML)
+B
7.4V(7.5V)
+B
C8
22
+B
H
• NOTES ON SCHEMATIC DIAGRAM can be found on page 18.
1
2
34 5
Figure 12 SCHEMATIC DIAGRAM (3/4)
– 12 –
6
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