Sharp QT-CD131H User manual

QT-CD131H/132H
– 1 –
Illustration: QT-CD132H
CONTENTS Page
SAFETY PRECATION FOR SERVICE MANUAL.............................................................................................................. 2
IMPORTANT SERVICE NOTES (131H FOR UK ONLY) .................................................................................................. 3
SPECIFICATIONS ............................................................................................................................................................. 3
NAMES OF PARTS ........................................................................................................................................................... 4
DISASSEMBLY.................................................................................................................................................................. 5
REMOVING AND REINSTALLING THE MAIN PARTS..................................................................................................... 6
ADJUSTMENT ................................................................................................................................................................... 7
BLOCK DIAGRAM ............................................................................................................................................................. 9
SCHEMATIC DIAGRAM / WIRING SIDE OF P.W.BOARD............................................................................................. 12
NOTES ON SCHEMATIC DIAGRAM .............................................................................................................................. 21
TYPES OF TRANSISTOR ............................................................................................................................................... 21
WAVEFORMS OF CD CIRCUIT...................................................................................................................................... 22
TROUBLESHOOTING (CD SECTION) ........................................................................................................................... 23
FUNCTION TABLE OF IC................................................................................................................................................ 26
PARTS GUIDE/EXPLODED VIEW
PACKING METHOD (131H FOR UK ONLY)
• In the interests of user-safety the set should be restored to its
originalconditionandonlypartsidenticaltothosespecifiedshould
be used.
QT-CD131H
QT-CD132H
SERVICE MANUAL
SHARP CORPORATION
No. S8871QTCD131H
This document has been published to be used
for after sales service only.
The contents are subject to change without notice.
• Note for users in UK
Recording and playback of any material may require consent
which SHARP is unable to give. Please refer particularly to the
provisions of Copyright Act 1956, the Dramatic and Musical
Prefomers Protection Act 1956, the Preformers Protection Acts
1963 and 1972 and to any subsequent statutory enactments and
orders.
DIFFERENCE BETWEEN QT-CD131H AND QT-CD132H
QT-CD131H
SURROUND
QT-CD132H

QT-CD131H/132H
– 2 –
SAFETY PRECATION FOR
SERVICE MANUAL
Precaution to be taken when replacing and servicing the
Laser Pickup.
The ael (ACCESSIBLE EMMISSION LEVEL) of the laser
power output is less than class 1 but the laser component is
capable of emitting radiation exceeding the limit for class 1.
Therefore it is important that the following precautions are
observerduringservicingtoprotectyoureyesagainstexposure
to the laser beam.
(1) When the cabinet is removed, the power is turned on
withoutacompactdiscinpositionandthepick-upisonthe
outer edge the laser will light for several seconds to detect
a disc. Do not look into the pick-up lens.
(2)Thelaserpoweroutputofthepick-upunitandreplacement
service parts are all factory pre-set before shipment.
Do not attempt to re-adjust the laser pick-up unit during
replacement or servicing.
(3) Under no circumstances stare into the pick-up lens at any
time.
(4)CAUTION-USEofcontrolsoradjustments,orpereformance
ofprocedures otherthan thosespecified hereinmayresult
in hazardous radiation exposure.
(131H For UK)
(131H Except for UK/132H)
Laser Diode Properties
Material: GaAIAs
Wavelength: 780 nm
Emission Duration: continuous
Laser Output: max. 0.6 mW
CAUTION-INVISIBLE LASER RADIATION WHEN OPEN. DO NOT STARE INTO
BEAM OR VIEW DIRECTLY WITH OPTICAL INSTRUMENTS.
VARNING-OSYNLIG LASERSTRALNING NAR DENNA DEL AR OPPNAD. STIRRA
EJ IN I STRALEN OCH BETRAKTA EJ STRALEN MED OPTISKA INSTRUMENT.
ADVERSEL-USYNLIG LASERSTRALING VED ABNING. SE IKKE IND I
STRALEN-HELLER IKKE MED OPTISKE INSTRUMENTER.
VARO! AVATTAESSA OLET ALTTIINA NAKYMATON LASERSATEILYLLE.
ALA TUIJOTA SATEESEEN ALAKA KATSO SITA OPTISEN LAITTEEN LAPI.
VARNING-OSYNLIG LASERSTRALNING NAR DENNA DEL AR OPPNAD.
STIRRA EJ IN I STRALEN OCH BETRAKTA EJ STRALEN GENOM OPTISKT
INSTRUMENT.
ADVERSEL-USYNLIG LASERSTRALING NAR DEKSEL APNES. STIRR IKKE
INN I STRALEN ELLER SE DIREKTE MED OPTISKE INSTRUMENTER.
VAROITUS! LAITTEEN KÄYTTÄMINEN
MUULLA KUIN TÄSSÄ
KÄYTTÖOHJEESSA MAINITULLA
TAVALLA SAATTAA ALTISTAA
KÄYTTÄJÄN TURVALLISUUSLUOKAN 1
YLITTÄVÄLLENÄKYMÄTTÖMÄLLE
LASERSÄTEILYLLE.
VARNING - OM APPARATEN ANVÄNDS
PÅ ANNAT SÄTT ÄN I DENNA
BRUKSANVISNING SPECIFICERAS. KAN
ANVÄNDAREN UTSÄTTAS FÖR OSYNLIG
LASERSTRÅLNING, SOM ÖVERSKRIDER
GRÄNSEN FÖR LASERKLASS 1.
LASER KLASSE 1
LUOKAN 1 LASERLAITE
KLASS 1 LASERAPPARAT

QT-CD131H/132H
– 3 –
FOR A COMPLETE DESCRIPTION OF THE OPERATION OF THIS UNIT, PLEASE REFER
TO THE OPERATION MANUAL.
SPECIFICATIONS
General
Power source: AC 230 - 240V, 50 Hz
DC 12 V [ "D" size (UM/SUM-1,
R20 or HP-2) battery x 8]
DC 3 V ["AA" size (UM/SUM-3, R6 or
HP-7) battery x 2 for tuner memory]
Power consumption: 11 W
Output power: PMPO; 28 W (total)
(131H Except for UK/ MPO; 8.4 W (4.2 W + 4.2 W)
132H) (AC operation, DIN 45 324)
RMS; 4.6 W (2.3 W + 2.3 W)
(DC operation, DIN 45 324)
Output power: MPO (Max.); 8.4W (4.2 W + 4.2 W)
(131H For UK) (AC operation)
RMS; 4.6 W (2.3 W +2.3 W)
(DC operation, 10 % T.H.D.)
Speakers: 10 cm(4" ) full-range speaker x 2
Output terminals: Headphones; 16-50 ohms
(recommended; 32 ohms)
Dimensions: Width; 480 mm (18-15/16")
Height; 153 mm (6-1/16")
Depth; 254 mm (10")
Weight: 3.2 kg (7.1 Ibs.) without batteries
Radio
Frequency range: FM; 87.5 - 108 MHz
AM; 522 - 1,620 kHz
Tape recorder
Frequency response: 50 - 14,000 Hz (Normal tape)
Signal/noise ratio: 50 dB
Wow and flitter: 0.3 % (DIN 45 511)
(131H Except for UK/132H)
Wow and flitter: 0.25 % (WRMS)
(131H For UK)
Motor: DC 12 V electric governor
Bias system: AC bias
Erase system: Magnet erase
Compact disc player
Disc: Compact disc
Signal readout: Non-contact,3-beam semiconductor
laser pickup
Audio channels: 2
Quantization: 16-bit linear quantization
Filter: 4-tims oversampling digital filter
D/A converter: 1-bit D/A converter
Wow and flutter: Unmeasurable
(less than 0.001% W. peak)
Specifications for this model are subject to change without
prior notice.
IMPORTANT SERVICE NOTES (131H FOR UK ONLY)
Beforereturningthe unit to the customer after completion of a
repairoradjustment itis necessaryforthefollowingwithstand
voltage test to be applied to ensure the unit is safe for the
customer to use.
Setting of Withstanding Voltage Tester and set.
Set name Set value
Withstanding Voltage Tester
Test voltage 4,240 VPEAK
3,000 VRMS
Set time 6 secs
Set current (Cutoff current) 4 mA
Unit
Judgment
OK: The “GOOD” lamp lights.
NG: The “NG” lamp lights and the buzzor sounds.
PROBE
AC OUT UNIT
SHORT-CIRCUT
AC POWER
SUPPLY CORD
CONNECT THE PROBE
TO GND OF BATTERY
SPRING
WITHSTANDING
VOLTAGE TESTER

QT-CD131H/132H
– 4 –
NAMES OF PARTS
1. Cassette Compartment
2. CD Compartment
3. (TAPE) Record Button:
4. (TAPE) Play Button:
5. (TAPE) Rewind Button:
6. (TAPE) Fast Forward Button:
7. (TAPE) Stop/Eject Button:
8. (TAPE) Pause Button:
9. CD Eject Button
10. (TUNER) Preset Down Button:
11. (TUNER) Preset Up Button:
12. (TUNER) Band Selector Button
13. (TUNER) Preset Memory Button
14. (TUNER) Tuning Down Button:
15. (TUNER) Tuning Up Button:
16. Volume Control
17. Stand-by, On/Function Switch
18. Extra Bass Button: X-BASS
19. Surround Button (132H ONLY)
20. (CD) Track Down/Review Button:
21. (CD) Track Up/Cue Button:
22. (CD) Stop Button:
23. (CD) Play/Repeat Button:
24. FM Stereo Mode Indicator: ST
25. FM Stereo Indicator:
26. Band Indicator: FM/AM
27. Memory Indicator
28. Preset Number Indicator
29. Frequency Indicator
31. (CD) Play Indicator:
31. (CD) Repeat Indicator:
32. (CD) Track Number Indicator
33. FM Telescopic Rod Aerial
34. Headphone Socket
35. Battery Compartment
36. AC Power Input Socket
/
12
3456789
10 11 12 13 14 15
16 17 18 19 20 21 22 23
24 2526 27
28 29
30
31
32
33 34
35 36
Illustration: QT-CD132H

QT-CD131H/132H
– 5 –
1 Rear Cabinet 1. Screw ................. (A1) x10 5-1
2. Socket .................. (A2) x2 5-2
2 Top Cabinet 1. Knob..................... (B1) x1 5-2
(with CD Mechanism/ 2. Screw ................... (B2) x3
Tape Mechanism/ 3. Socket .................. (B3) x2
Main PWB)
3 Main PWB/ 1. Screw ................... (C1) x8 5-3
Switch PWB 2. Socket ..................(C2) x4 5-3,6-2
4 Tuner Display PWB/ 1. Screw .................. (D1) x3 6-1
Switch PWB
5 Tape Mechanism 1. Screw ................... (E1) x4 6-2
6 CD Mechanism 1. Screw ................... (F1) x3 6-2
7 Terminal PWB 1. Screw ...................(G1) x5 6-3
2. Hook.....................(G2) x1
8 Battery PWB 1. Hook.....................(H1) x2 6-4
DISASSEMBLY
Caution on Disassembly
Followthe below-mentioned notes when disassembling the
unitandreassemblingit,tokeepitsafeandensureexcellent
performance:
1. Take cassette tape and compact disc out of the unit.
2. Be sure to remove the power supply plug from the wall
outlet before starting to disassemble the unit.
3. Take off nylon bands or wire holders where they need be
removedwhendisassemblingtheunit.Afterservicingthe
unit, be sure to rearrange the leads where they were
before disassembling.
4. Take suffcient care on static electricity of integrated
circuits and other circuits when servicing.
STEP REMOVAL PROCEDURE FIGURE
Figure 5-3
Figure 5-1
Figure 5-2
(A1)x3
ø3x12mm
(A1)x1
ø3x12mm
(A1)x6
ø3x20mm
Rear Cabinet
Front Cabinet
(B2)x3
ø3x10mm (A2)x1
(A2)x1 (B3)x1 Front Cabinet
Top Cabinet (B1)x1
Main PWB
Headphones
PWB
(C1)x6
ø3x10mm
(C1)x2
ø3x10mm
(C2)x1 Switch PWB
Main PWB
Top Cabinet

QT-CD131H/132H
– 6 –
CD MECHANISM SECTION
Perform steps 1, 2, 3 and 6 of the disassembly method to
remove the CD mechanism.
How to remove the pickup (See Fig. 6-5.)
1. Remove the screws (A1) x 2 pcs., to remove the shaft (A2)
x1 pc.
2. Remove the stop washer (A3) x1 pc., to remove the gear
(A4) x 1 pc.
3. Remove the pickup.
Figure 6-4
Figure 6-2
REMOVING AND REINSTALLING THE MAIN PARTS
Figure 6-5
Figure 6-3
Figure 6-1
(D1)x2
ø3x12mm
(D1)x1
ø3x10mm
Front Cabinet
Switch PWB
Tuner Display
PWB
Top Cabinet
Tape
Mechanism
CD Mechanism
(F1)x3
ø2.5x10mm
(E1)x4
ø3x10mm
(C2)x2
(C2)x1
(G1)x2
ø3x10mm
(G1)x1
ø3x10mm
(G1)x2
ø3x10mm
Terminal PWB
Driver
Push
(G2)x1
Rear Cabinet
Rear Cabinet
(H1)x1
(H1)x1
Battery PWB Pull
Pull
(A1) x2
2.6 x6mm
Stop
Washer
(A3) x1
CD
Mechanism
Gear
(A4) x1
Shaft
(A2) x1
Pickup

QT-CD131H/132H
– 7 –
MECHANISM SECTION
• Driving Force Check
PLAY: TW-2412 Over 120 g
Torque Meter Specified Value
• Torque Check
Torque Meter Specified Value
Play: TW-2111 25 to 65 g.cm
Fast Forward: TW-2231 60 to 130 g.cm
Rewind: TW-2231 60 to 130 g.cm
• Tape Speed
MTT-111 In motor 3,000 ±90 Hz Output: Speaker
Teaminal
(CNP201 Load
resistance: 8 ohms)
Instrument
Connection
Specified
Value
Test
Tape
TAPE SECTION
Position of each switch or control
Volume control Max
Function switch Tape/Power Off
X-BASS On
• Bias Oscillation
Adjustment Point
• Playback Amplifier Sensitivity Check
Instrument Connection
Test Tape
MTT-118 1.8 V ±3 dB Speaker Terminal
(Load resistance: 8 ohms)
Specified Value
ADJUSTMENT
Figure 7-2 ADJUSTMENT POINTS
• Head Azimuth
Torque Meter Specified Value
MTT-114 Output: Speaker Terminal
(CNP201 Load resistance: 8 ohms)
Adjusting
Point
Specified Value Instrument
Connection
L301 82 kHz ±6 kHz Pin 2 of CNP201
– 6 kHz
fL: Low-range frequency
fH: High-renge frequency
IF 450 kHz 1,620 kHz T3 *1
Band — 522 kHz (fL): L4 *3
Coverage 1.0 ±0.1 V
Tracking 600 kHz 600 kHz (fL): L3 *2
1,400 kHz 1,400 kHz (fH):TC1
Test Stage Frequency Frequency
Display Setting/
Adjusting
Parts
Instrument
Connection
TUNER SECTION
• FM RF
Signal generator: 1 kHz, 75 kHz dev., FM modulated
Band — 87.50 MHz (fL): L2 *1
Coverage 3.4 ±0.1 V
RF 98.00 MHz 98.00 MHz L1 *2
(10~30 dB)
Test Stage Frequency Frequency
Display Setting/
Adjusting
Parts
Instrument
Connection
*1. Input: Antenna, Output: TP1
*2. Input: Antenna, Output: Speaker Terminal
• Detection
Signal generator: 10.7 MHz, FM sweep generator
IF 10.7 MHz 98.00 MHz T1(Turn Input: Pin 1 of
the core of IC1
T1 fully Output: TP2
counter-
clockwise.
Test
Stage Frequency Frequency
Display Setting/
Adjusting
Parts
Instrument
Connection
• AM IF/RF
Signal generator: 400 Hz, 30%, AM modulated
*1. Input: Antenna, Output: Pin19 of IC2
*2. Input: Antenna, Output: Speaker Terminal
*3. Input: Input is not connected, Output: TP1
• VCO Frequency
Specified
Value Instrument Connection
VR1 76 kHz ±200 Hz Pin 13, pin 21 and
ground of IC2
Adjusting Point
Note:
After preparing the test circuit shown in Fig. 7-1, connect the
Pin 13, Pin 21 and ground of the IC2 with the test circuit, and
measurethevalue.At thistime,applyastandardunmodulated
signal input and adjust the VCO.
Figure 7-1 VCO FREQUENCY TEST CIRCUIT
Pin 13 of IC2 Pin 21 of IC2
D
G
S
10 kohm
TO FREQUENCY
COUNTER
FET : 2SK19 or 2SK54
1
1
VCO
VR1
IC2
T3
L4
L2
IC1
L1 FM IF
T1
TC1
AM TRACKING
L3
AM BAR
ANTENNA
FM ROD ANTENNA
FM BAND
COVERAGE
T2
AM IF
TP2
FM RF
FM DET.
TP1
13
17
19
21
R26
R7
AM BAND
COVERAGE
MAIN PWB
fL fH

QT-CD131H/132H
– 8 –
CD SECTION
Since this CD system incorporates the following automatic
adjustmentfunction,whenthepickupisreplaced,itisnecessary
to reajust it.
SincethisCDunitdoesnotneedadjustment,thecombination
of PWB and laser pickup unit is not restricted.
TEST MODE
While holding down the "STOP" button, move the FUNCTION/POWER switch to "CD".
Then, release the "STOP" button and, within 0.5 second, connect the TEST POINT to GND (within 0.5 second).
(See Fig. 8)
Start
Note 1. When the CD LID switch is in the OFF position, the unit will be able to enter the test mode.
However, playback cannot be performed in this mode.
2. You can only move the pickup.
3. The LCD display should be the same as it is for normal CD operations.
1
2When the "PLAY" button is pressed, the laser will be lit, and when the "STOP" button is pressed, it will be
turned off. Playback will also start and stop when these buttons are pressed.
Turning the tracking servo on or off.
3
a. If the "PLAY" button is pressed while in the stop mode, the laser will simply be turned on at first.
b. If the laser is lit and the "PLAY" button is pressed again, playback will start from the current pickup position.
c. If the "STOP" button is pressed, playback will stop. When pressed again, the laser will be turned off.
a. Each time the PAUSE button is pressed during playback, the tracking servo will be turned on or off.
(Note: If the PLAY button is pressed while in the stop mode, the tracking servo will automatically be
turned on.)
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.
While holding down the "STOP" button, move the FUNCTION/POWER switch to "CD".
Then, release the "STOP" button and, within 0.5 second, press the REVIEW/DOWN button.
Start
Display
LCD MODE
1
2
3
*Afterthenumber 3 hasappearedinthedisplay,eachtimethe"UP/CUE"buttonispressed,thedisplaywillswitch
in the following order: 1 , 2 , and then 3 .
1 second1 second
Figure 8
SW774
TRACK DOWN/
REVIEW
R771
3.9K
TEST
POINT
R772
2.7K
R773
1.8K
R774
1.5K
R776
10K
SW773
TRACK UP/
CUE
SW771
PLAY
SW7712
STOP
TO CD SECTION
+B
31
SWITCH PWB – A2

QT-CD131H/132H
– 9 –
Figure 9 BLOCK DIAGRAM (1/3)
62
51 37
46
56
39
55
38
54
33
53
32
11
8
42
21
25
20
38
34
35
36
~
+5V
FOCUS COIL
TRACKING COIL
PICKUP UNIT
310 19 23 25
1 2
17
11
18
12
49 50 52 5351 54
Q804
+5V
23
6
63
43
64
10
44
12
45
9
14
13
43
16
44
17
18 19
20
15
32 40
161 58 57
CL, DAT, SELIAL CONTROL
CONSTANT VOLTAGE REGULATOR
16 27
31
28
15
30
29
M
M
MOTOR
SLIDE
MOTOR
SPIN
1
2
3
4
9~~ 1714
XIN
XOUT
K1
CD
OPERATION
KEY
SW771~SW774
LID
SW761
OPEN/CLOSE
~~
57
24 27 28 31
30
60 41 44 33 22 23
37
CD LCD LCD701
PICKUP IN
PU-IN SW
19
13
14
SL+
SL–
+7.4V
(CD)
1 2 3
4
5
6 7
GND (A) R-CH L-CH GND (D) POWER GND +7.4V (D) SECTION
MAIN
TO
VVDD
XIN
XOUT
VDD
XVDD
EFMO EFMIN CLV+ CLV–
V/P HFL
TES TOFF JP– JP+ TGL
RES. CQCK. COIN
SQOUT. RWC. WRQ
LCHO
LC78622E
IC802
SERVO/SIGNAL
CONTROL
16.93MHz
XL801
SLI
SLC
CV+
JP–
DRF
CE
DAT
CL
CLK
THLD/DEF
SLD
SLEO
SPO
FD
TO
SL+ SL–
F E FIN1 FIN2 64 62
+5V
Q805
VCC1
LDO
LASER
DRIVER
SERVO AMP.
LA9240M
IC801
22 2+7.4V
7 5 6 8
28
26 13 27
IC804
BA5914FP
FOCUS/TRACKING
/SPIN/SLIDE
DRIVER
M701
M702
SW702
RES
SL–
DRF
WRQ
RESET
VLC3
VDD
+5V
(D)
4MHz
X701
IC701
IX0105AW
SYSTEM
MICROCOMPUTER
COM0
SEG1
SEG4
COM3
CD LID
MUTE

QT-CD131H/132H
– 10 –
Figure 10 BLOCK DIAGRAM (2/3)
6
5
1
8
2
2
3
4 5 6 7
10
11
12
51
8
9
6
12
IC202
LA4597
POWER AMP.
L
VOLUME
X-BASS
132H
ONLY
SW203
A,B
SURROUND
SW202
A,B
VR201
A,B
STANBY
R
5
6
2
2
13
3
7
1
IC203
KIA7808P
VOLTAGE
REGULATOR
+B2
+B1
SP501
SPEAKERS
SP502
SO651
SW201-C
POWER/
FUNCTION
AM / FM
SELECT
+B
FM +B
SW201-D POWER /
FUNCTION
RADIO
TAPE
REC
POWER/
FUNCTION
SW201-A,B
FROM TUNER SECTION IC2-9,10PIN
CD
EC / PB
SW102
A,F
P. B
REC
IC101
EQULIZER
AMP.
BA331IL
REC
REC
P.B
P.B P.B
L
R
L
R
SW102
REC / PB
B.D
REC / PB
SW102
C,E
L-CH
REC / PB
HEAD
R-CH
(AUDIO GND)
+7.4V
+B2
(DIGITAL GND)
(POWER GND)
FROM
CD/DISPLAY
SECTION
R-CH
ERASE
HEAD SW102-H
REC / PB BIAS
OSC.
C201
L201 SW102-G
REC / PB
+B1 M601
TAPE
MOTOR SW601
MAIN
D651~D654
RECTIFIER
TUNER
+B
BACK UP
+B
T601
POWER
TRANSFORMER
BATTERY
DC12V
["D" SIZE (UM/SUM-1,
R20 or HP-2)BATTERYx8]
BATTERY
DC3V
["AA" SIZE (UM/SUM-3,
R6 or HP-7)BATTERYx2
FOR TUNER MEMORY]
AC INPUT
AC 230-240V
50Hz
L-CH
IC201
KIA4558S
SURROUND AMP.
F651
T1.25A L
250V
MUTE
L-CH
R-CH

QT-CD131H/132H
– 11 –
Figure 11 BLOCK DIAGRAM (3/3)
X IN
FM IN
X OUT
VSS
AM IN
IF IN
VT
AM MIX OUT
X1
4.5MHz
DOUT
DATA
CLOCK
PERIDO
OF1
CF2
AM IF IN
AM OSC
AM MIX OUT
FM IF IN
AM IF IN
GND
AM RF IN
FM DET
DET OUT
STEREO
TUNER
MPX VCO
MPX IN
R-CH OUT
L-CH OUT
MO/ST
T2
FM DET
VR1
VCO
FM+B
FM RIPPLE
FILTER
TO MAIN SECTION
CF1
VT VT
F1
B.P.F
L1
VD1
FM RF
L2
VD2
FM OSC
T1
FM IF
Q1 RF AMP.
FM+B
FM ROD
ANTENA
SWITCHING
MUTE
24 22 20 18 13 16 10 15
9
1 2 8
7
6
5
3 4 5 6
12 11 10
1
22 13 14
1 6
3 4 9
7
8
IC3
TC9216P
PLL CONTROLLER
+B
21
+B
IC2
LA1805
FM IF DET.
/FM MPX./AM IF
IC1
TA7358AP
FM FRONT END
5
T3
AM IF
Q5 Q6
Q10
AM OSC OUT
VT CONTROL
Q3 Q4
L3
AM ANT. VD3-1
TC1
L4
AM OSC.
VD3-2
23
24
31 45 44 43 50 51
1 6 7 8 9 65 80
41
48
33
30
22 20
SW504 MEMORY SW503 TUNER UP SW502 TUNER DOWN SW501 BAND SW505 PRESET UP SW506 PRESET DOWN
LCD501
LCD DISPLAY
11
10
9
8
7
6
5
4321 12131415 16171819 20 21
MONO/ST
IC501
TUNER
MICROCOMPUTER
Q501 Q502
TUNER +B
IC502
RESET
RESET
A-GND
AUDIO +12V
+5V
VOLTAGE
REGULATOR
ZD1
D GND
TUNER +B

QT-CD131H/132H
– 12 –
A
B
C
D
E
F
G
H
1234 5 6
• The numbers 1 to 12 are waveform numbers shown in page 22.
Figure 12 SCHEMATIC DIAGRAM (1/6)
SW761
CD LID
OPEN/CLOSE R871
4.7K
C845
4.7/50
C850
0.1
C848
1/50
R842
22 C849
0.022
Q805
S9012H
R831
1K
C701
0.022
R715
15K
R714
10K
X701
4.0MHz
R733 1K
R732 1K
R731 1K
R729 1K
R728 1K
R726 1K
R727 1K
R730
1K
R734
1K
R708
1K
C702
0.022
R736
1K
R713
1K
C705
0.022
C704
100/10
R711
2.7K
R710
10K
R709
1K
C811
0.1
R823
1.2K
C817
0.47/50
C820 0.0033
R825 1.2K C819
47/16
C818 1/50
R824 10K
R830
1K
C816
0.001
R821
56K
C815 0.0047
R817
82K
R819 39K
R820 10K
R813
33K
C814
0.01 R816
1.5K
C812
330P
R815
47K
R814 10K
R829
1K
R812
15K C813
0.1
R840
22K
R839
22K
R828
1K
C82
1
1/5
0
R810
82K
C832
27P(C
H
R
3
3
0
R832
56K
C834
0.033 R836
47K
C833
0.001
C830
2P
(CH) R835
470
R833
5.6K
C803
0.1/50
R806
100
C807
0.1/50
C806
0.033
R805
6.8K C808
0.068
R811
3.3K
C809
0.047
R807
1KR809
27K C810
180P
R808
12K
C804
0.001 R804
2.2K C805 0.033
R802
100K
R803
15K
C840
0.33/50
C839 1/50 C838 0.01
C837 10/16
C835 0.1/50
IC801
LA9241M
SERVOAMP.
48
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
R822
6.8K
GND VREF
SLEQ SLD
SL– SL+
NC
SP SPG SP– SPD
FIN2
FIN1
E
TD
TD–
TA
SCI
TH
TESI
TE-
TE
A GND
JP–
JP+
TGL
TOFF
TES
HFL
SLOF
CV-
CV+
RFSM
RFS-
SLC
SLI
GND
FSC
TBC
NC
DEF
CLK
CL
DAT
CE
FSS
VCC2
REFI
VR
LF2
PH1 BH1
LDD
LDS
VCC1
SEG16
COM0
COM1
COM2 COM3
VLC1 VLC2 VLC3
KIDSW AIN7
SIMUKE AIN6
AIN5
P3P40
P33
P32
P30
VREF
XCIN
XCOUT
VDD
XOUT
XIN
RESET
PU-IN P23
WRQ P22
SQOUT P21
DFR P20
D8 SL– D7 SL+ D6 RWC D5 COIN D3 RES D4 COCK D1 MUTE
P10 POWER IN
P02
P01
P00
SEG0
SEG1
SEG2
SEG3
SEG4
SEG5
SEG6
SEG7
SEG8
SEG9
SEG10
SEG11
SEG12
+B5V
+B
DIGITAL GND
CO IN
CQCK
RES
R735 1K
64 63 62 61 60 59 58 57 5655 545
35
2 51 50 49
32
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
17
87654321
1 2
2
3456789
101112 131415 16
17
18
19
20
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
IC701
IX1015AW
SW773
FWD
R774
1.5K
SW774
REV
SW771
PLAY
SW772
STOP
R773
1.8K
R771
3.9K
R772
2.7K
R776
10K
+B
SWITCH PWB-A2
FW701
13
1
3
DRF
R827
220K
R826 220K
+B
LCD701
CD SIGNAL
C740
0.01
Q740
2SC1815GR
D740
1N4148 R741
3.3K
R740
4.7K
R743
100K
R742
1K
C741
3.3/50
R744
10K
D741
1N4148
R745
10K
+B
+B
R721
15K
R724
15K
R725
15K
R723 15K R722 15K
R720 15K R719 15K
R718 15K
R716
10K
MAIN PWB-A1 ( 1 / 3 ) @
JP
FD–
FD
TO
FA–
FA
FE
FE–
VSS
AVSS
P31
RWC
SL+
SL–
DRF
SQOUT
WRQ
PU IN
TB
F
SYSYTEM
MICROCOMPUTER
+B
+B
+B
LASER DRIVER
9
8
7
6
5
4
3
2
1
12
11
10
PIN
NO. VOLTAGE IC801
2.5V
2.5V
2.5V
2.5V
2.5V
2.5V
2.5V
2.5V
2.5V
2.5V
2.5V
2.5V
2.5V
2.5V
2.5V
2.5V
2.5V
2.5V
2.5V
2.5V
2.5V
0V
15
14
13
47
46
45
41
40
39
38
37
36
35
34
33
44
43
42
18
17
16
50
49
48
21
20
19
53
52
51
23
22
55
54
26
25
24
58
57
56
29
28
27
61
60
59
32
31
30
64
63
62
PIN
NO. VOLTAGE PIN NO. VOLTAGE
0V
2.5V
2.5V
0V
0V
2.4V
4.1V
4.7V
0V
0V
5V
5V
2.5V
2.5V
0.9V
0.9V
2.1V
4.2V
0V
5V
9
8
7
6
5
4
3
2
1
12
11
10
PIN
NO. VOLTAGE IC802
0V
0V
1.5V
0V
2V
5V
0.3V
0V
2.5V
2.5V
0V
0V
0V
5V
0V
4.8V
5V
5V
0V
0V
2.5V
0V
41
40
39
38
37
36
35
34
33
44
43
42
15
14
13
47
46
45
18
17
16
50
49
48
21
20
19
53
52
51
23
22
55
54
26
25
24
58
57
56
29
28
27
61
60
59
32
31
30
64
63
62
PIN
NO. VOLTAGE PIN
NO. VOLTAGE
2V
0V
0.1V
2.2V
0V
2.5V
0V
2.5V
0V
0V
0V
4.1V
4.1V
5V
0V
2.7V
2.4V
0V
0V
0V
2.5V
2.5V
2.5V
2.5V
2.5V
2.5V
2.5V
2.2V
2.2V
0V
0V
5V
5V
4.8V
0V
5V
0V
0V
1.5V
2.4V
2.5V
2.5V
5V
0V
0V
0V
0V
0V
0V
5V
2.5V
0V
0V
0V
5V
4.7V
2V
0V
0V
2V
4.7V
0V
5V
2.3V

QT-CD131H/132H
– 13 –
Figure 13 SCHEMATIC DIAGRAM (2/6)
78 9101112
• NOTES ON SCHEMATIC DIAGRAM can be found on page 21.
L802
0.68µH
R871
4.7K
C845
4.7/50
C850
0.1
R858
680
C869
0.0022
C870
0.0022
C801
0.01
R801
1K
C802
47/16
C841
0.047
R856 1.2K
R857 27K
C842
0.047
C847
0.01
IC802
LA78623D
SERVO/SIGNAL
CONTROL
48
47
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
35
34
33
16
15 16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
2
1
R860
1K
L801
0.82µH
C873 0.01
C843
100/10
R880
100
XL801
16.93MHz
C868
2.2/50 R874
100
C867
2.2/50
C890
100/10
R873
100
R876
10K
R875
10K
C887
0.022
R878
100
ZD801
MTZJ5.6B
C889
10/16
R877
220 Q804
S8050D
C846
330/10
C821
1/50
C851
0.022
R849 100K
D802
1N4148
R810
82K
C844
330/10
IC804
BA5914FP
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
R834
1K
C832
27P(CH)
R837
47K
R838
33K
C831
0.0027
R832
56K
C834
0.033 R836
47K
C833
0.001
C830
2P
(CH) R835
470
R833
5.6K
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
VO1+
VIN1
VO1–
MUTE
VO2+
VIN2G
VIN2
GND
NC
NC
VIN1G
VO2–
GND
OP OUT OP IN +
VO3–
VO3+
VIN3
VIN3G
VCC
VCC
BIAS IN
VIN4G
VIN4
VO4+
VO4–
GND
DEFI
TAI
PDO
ISET
VVDD
FR
Vss
EMFO
EMFIN
CLV+
CLV- HFL
TES
TOFF
TGL JP+ JP- PCK
FSEQ
VDD CONT1
CONT2 CONT3 CONT4 CONT5 EMPH C2F DOUT
TEST3
TEST4
MUTEL
NC
LVDD
LCHO
LVSS
RVSS
RCHO
RVDD
MUTER
XVDD
XOUT
XIN
XVSS
PW
SBSY
SFSY
EFLG
SBCK
FSX
WRQ
SQOUT
RWC
COIN
CQCK
RES
TST11
16M
4.2M
TEST5
CS
TEST1
JP
–
F
F
M
-
F
E
FO+ FO– TR– TR+
TR+
TR–
FO–
FO+
9
3
2
6
4 6
3 62 61 6059 58 57 56 55 54 53 52 51 50 49
32
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
8
1
2
3
4
5
6
7
1
2
3
4
5
6
R
827
2
20K
C822
220P
8
1
2
3
4
5
6
7 8
1
2
3
4
5
6
7
K
E
A
B
TR–
TR+
TR+
FO+
FO–
LD
MON
F
A
B
C
K
E
LD
VR
1
2
3
4
5
1
2
3
4
5
1
2
3
4
5
VR
TR-
TR+
FO+
FO-
GND
PD
BI802
CNS802
BI801
CNS801
FO+
FO-
LD
PD
PICKUP UNIT
1
2
3
4
5
6 M M701
SPINDLE
MOTOR
M M702
SLED
MOTOR
SW702
PICKUP IN
1
2
3
4
5
6
SP+
SP–
SL+
SL–
PU-IN
BI803
CNS803 CNP803
CD MOTOR PWB-C
+B
+B
+B
+B
+B
+B
+B
+B +B
+B
5
6
7
8
9
1011
DIGITAL +7.4V R-CH L-CH MUTE AUDIO GND DIGITAL GND POWER GND
P14 1 - F
TO MAIN SECTION
1
TR–
K
A
B
VVss
TEST2
V/P
F
OP IN –
+B
+B +B
+B
+B
+B
+B
FOCUS/TRACKING
/SPIN/SLIDE DRIVER
+B
CONSTANT
VOLTAGE
REGULATOR

QT-CD131H/132H
– 14 –
A
B
C
D
E
F
G
H
1234 5 6
Figure 14 SCHEMATIC DIAGRAM (3/6)
• NOTES ON SCHEMATIC DIAGRAM can be found on page 21.
R151
5.6K R153 6.8K
R155
27K
R156
27K
R154
6.8K
R157
131H:47K
132H:56K
R158
131H:47K
132H:56K
R159
27K
R160
27K
R161
27K
R162
27K
R165
680K
R233 131H:1K 132H4.7K
R167
4.7K
R163
27K
R164
27K
R168
4.7K
R150
220
R166
680K
C157
0.01
(ML)
C159 131H:0.22/50 132H:1/50
C158
0.01
(ML)
C153
0.027(ML)
C154
0.027(ML)
C155
330P
C156
330P
C151
0.027
(ML)
C152
0.027
(ML)
SW201-B
R152
5.6K
J6
82
SW201-A
C351
0.0022(ML) C352
220/10
Q351
S8050D
R354
10
R353
47K
C353
0.022(ML)
R351
220
R352
150
L301
C354
0.0056(ML)
R455
6.8K
R456
6.8K
R458
1K R457
1K
R123
8.2K
R121
1K
R124
8.2K
R104
22K
R105
15K
C108
820P
C107
820P
R101
330
R102
330
R103
22K
C105
0.0018
R106
15K
C106
0.0018
R109
120
C116
0.018(ML)
C113
47/16
IC101
BA3311L 10
9
8
5
2
R114
8.2K
R116
3.9K
R113
8.2K R115
3.9K R117
3.9K
C117
10/16
C115
0.018(ML)
R118
3.9K
R125
680K
C120
47/16
C119
2.2/50
R119
3.3K
R120
3.3K
D102
1N4148 D101
1N4148
C122
0.01
C121
0.01
R122
1K
R110
120
C114
47/16
C110
270P
R108
1K
R107
1K C111
330P
C112
330P
C109
270P
C123
100/10
D103
1N4148
SW203-B
X-BASS
P
BACK UP
GND
TUNER +B
GND(A)
L-CH
R-CH
X-BASS
SW203-A
OFFON
OFF
ON
TAPE
TUNER
ERASE HEAD
R-CH
L-CH
R
R
R
R
R P
P
PP
P
R P
R
R-CH
AUDIO GND
L-CH
MUTE
CD +7.4V
DIGITAL GND
POWER GND
CD
OUT1
OUT2
IN1
IN2
NF2
NF1
GND
VCC
FILTER
ALC T
12
11
7
6
4
3 1
1 1
2 2
3 3
4 4
CNS101
1
2
3
4
1
2
RECORD/PLAYBACK
HEAD
TAPE
SW102-E
SW102-C SW102-B
SW102-D
SW102-H
SW102-A
SW102-F
5
6
7
8
9
10
11
CNS502
SW201-G
TAPE
TUNER
CD
FM SIGNAL
CD SIGNAL
PLAYBACK SIGNAL
RECORD SIGNAL
CNP101
C118
10/16
IC101:REC./P.B.EQUALIZER AMP.
BIAS OSC.
+B
P13 7 - G
TO CD SERVO
SECTION P16 3 - A
TO TUNER
SECTION
P16 4 - A
TO TUNER
SECTION
CNP502
R P
Q151
2SC1815GR
Q152
2SC1815GR
C150
100/10
C160
131H:0.22/50
132H:1/50
R234 131H:1K 132H4.7K
< >: Recording
[ ]: Play
9
8
7
6
5
4
3
2
1
12
11
10
PIN
NO. VOLTAGE
IC101
<0V> [3.23V]
<0V> [0V]
<0.6V> [0.6V]
<0V> [0V]
<0V> [0V]
<0V> [0V]
<0V> [0V]
<7.43V> [7.43V]
<0V> [0V]
<7.37V> [7.37V]
<0.6V> [0.6V]
<3.3V> [3.3V]
9
8
7
6
5
4
3
2
1
13
12
11
10
PIN
NO. VOLTAGE
IC202
0.1V
0V
11.2V
0V
11.3V
0V
0.1V
12V
10.4V
5.8V
0V
5.8V
10.4V

QT-CD131H/132H
– 15 –
78 9101112
Figure 15 SCHEMATIC DIAGRAM (4/6)
R233 131H:1K 132H4.7K
R167
4.7K
R163
27K
R164
27K
R168
4.7K
R150
220
C250
0.022
6
K
C159 131H:0.22/50 132H:1/50
SW201-D
3
2
1
3
2
1
SW601
(241-7)
TAPE MAIN
M M601
(241-6)
TAPE MOTOR
SP501
SP502
+
–
TAPE
TUNER
CD
CNS201 CNP201
C654
0.022
C651
0.022
D651
1N4004
D652
1N4004
C652
0.022
C653
0.022
T601
SO651
2
11
2
CNP602
CNS602
D201
1N4148
C226
0.022
VR201-B
20K(B) VR201-A
20K(B)
R221
1K
C224
47/16
C223
47/16
R222
1K
C221
0.001
C229
100/10
C233
1000/10
C227
4700/25
IC202
LA4597
POWER AMP.
13
12
11
10
9
7
6
4
3
2
1
C222
0.001
C225
220/25
C230
100/10
C234
1000/10
C232
0.1(ML)
C231
0.1(ML)
C219
1/50
C220
1/50
MAIN VOL
+
+
–
–
5 8
FW202
1
1
5
5
J201
HEADPHONES
R227
120 R228
120
HEADPHONES PWB-A4
C215
0.068(ML)
C216
0.068(ML)
R219
131H:3.3K
132H:2.7K
C217
131H:0.0022(ML)
132H:0.0012(ML)
R215
1K
R216
1K
R220
131H:3.3K
132H:2.7K
C218
131H:0.0022(ML)
132H:0.0012(ML)
SPEAKERS
L-CH
R-CH
POWER TRANSFORMER
AC INPUT
AC 230-240V
50Hz
TERMINAL PWB-A3
D653
1N4004
D654
1N4004
DC 12V[ ''D'' SIZE(UM/SUM-1,
R20 OR HP-2) BATTERYx8]
DC 3V [ ''AA'' SIZE(UM/SUM-3,
R6 OR HP-7) BATTERYx2
FOR TUNER MEMORY]
BATTERY PWB-B3,4
C301
0.022
IC203
KIA7808P
VOLTAGE
REGULATOR
IN
OUT 1
2
3
C302
0.022
TUNER
SW201-C
TAPE
CD
+B
+B
MAIN PWB-A1(2/3)
Q202
2SC1815GR
Q201
2SC1815GR
D202
1N4148
R229
10K
Q151
2SC1815GR
Q152
2SC1815GR
C150
100/10
C160
131H:0.22/50
132H:1/50
R223
4.7K
R224
4.7K
R225
100K
C228
1/50
131H
ONLY
132H
ONLY
131H
ONLY
R234 131H:1K 132H4.7K
7
68
9
5
42
3
C201
0.0056(ML)
C202
0.0056(ML)
R201
100K
R202
100K
IC201-2
KIA4558S
SURROUND
AMP.
IC201-1
KIA4558S
SURROUND
AMP.
SW202
SURROUND
C211 220/10
R212 10K R211
10K
C208
4.7/50
C212
10/16
C209
4.7/50
C203
1/50
C204
1/50
C210
4.7/50
R231
330
R207 12K
R208 12K
R205
4.7K
C205
0.0018
(ML)
C206
0.0018
(ML)
R204
10K
R203
10K R209
22K
C207
4.7/50
R210
22K
R206
4.7K
F651
T1.25A L
250V

QT-CD131H/132H
– 16 –
A
B
C
D
E
F
G
H
1234 5 6
Figure 16 SCHEMATIC DIAGRAM (5/6)
• NOTES ON SCHEMATIC DIAGRAM can be found on page 21.
8
7
32 6
5
4 9
1 C12
0.022
R4
10
C7
0.001
R2
100K
C6
0.01
Q1 2SC1674K
C2
0.01
C3
4.7P(CH)
T1 R56
47
R3
33K
CF1
C15
0.022 C16
0.022
C14
0.022
R1 22
C5
0.01 R6
680
R8 47K
C13
10/16
IC1
TA7358AP
C9
33P(CH)
C8
15P
(CH)
L1
FM RF
C60 100P
R9
100K
VD3-1
KV1581A
C17
0.047
R12
4.7K
L4
R10
68K
VD3-2
KV1581A
C19
18P(UJ) C20
470P
R11
56K
R7 4.7K
C18
0.022
C52
0.022
C51
10/16
TC1
20P
VD1
KV1360NT
C10
24P(UJ)
C11 22P (CH)
R5 10K
L2
FM OSC
14
15
1 2 4 5
3 6 7 8
20 19 18 17 16
24 23 22 13
TP303
21
12
11
9 10
TP2
TP1
C42
3.3/50
C32
0.022
C31
0.022 C33
22/16
C38
0.018
C41
3.3/50
C39
3.3/50
R26
1.5K
IC2
LA1805
C36
0.0022 R27
47K
R29
1.2K
VR1
6.8K(B)
C43
0.0015(S)
R30 15K
T2
R25 33K
R37
3.3K
R38
3.3K
C40
470P
Q10
2SC1815GR
R28
10K
C34
220/10
C35
0.022
C49
1/50
T3 CF2
R35 10K R36
10K
C46
0.015
C37
0.022
Q8
2SC1815GR
Q7
2SC1815GR
R34 4.7K
R33
4.7K
R44 270
ZD1
MTZJ5.1B
R23 47K
R19 10K
C28
47/16
Q5
2SA673-C
R18 47K
Q3
2SC1815GR
C24
2.2/50 R15
1.2K
R42 4.7K
D3
1N4148
R39 10K
Q9
2SA673-C
R40 47K
R41
22K
D4
1N4148
R32
33K
C44
1/50
R31
1K
C50
0.022 R45
220
R22 47K
C22 0.01
R52 1K
R51
1K
R55 10K
R14
10K
C53
0.022
R13 390
R24 3.9K
AM MIX
AM OSC
AM +B
AM RF
FM +B
FM DET
GND
TUN IND
VCO NC
L CH
AM /FM
R CH
1
2
3
+B
1
2
3
C48
1/50
+B
+B
FM
B.P.F
1 2 3
F1
D1
1N4148
GND(D) TUNER +B
PLL(DATA)
PLL(CLOCK) PLL(PERIOD)
CNP501
1 2 3 4
5
6
7
8
9
10
STEREO
TUNED
MUTE
MONO/STEREO
BACK UP
C55 330P
+B
+B
+B
+B
R43
47K
R17
10K
Q4
2SC1815GR
C25
0.001
R16
2.2K
C26
0.022
+B
+B
R21 5.6K
R20
6.8K
Q6
2SC1815GR
C56 0.01
AM OSC.
L3 AM ANT.
+B
+B FM DET.
AM IF
FM IF
9
10
11
12 14
1
2 3 4
5
6
7
8
X1
4.5MHz
C29 12P (CH)
C30
15P(CH)
IC3
TC9216P
PLL
C57
100/10
C21
0.022
L5
470µH
+B
C54
0.022
C27
0.022
16 15
13
X OUT
X IN
DATA
CLOCK
PERIOD
OT-1 OT-2 OT-3
I/O5(ST)
IF-IN
AM-IN
FM-IN
GND
DO 1
DO 2
VDD
P17 11 - H
TO TUNER
DISPLAY PWB
CNS501
R-CH
GND(A)
L-CH
1 3 2 4 TUNER +B
1
2
GND
2
CNP502
1
FW502
P14 1 - E
TO MAIN SECTION
CNS502
P14 1 - E
TO MAIN SECTION
FM ROD ANTENA
FM SIGNAL AM SIGNAL
FM FRONT END
D2
1N4148
C4
24P(CH)
VD2
KV1360NT
C47
1/50
C45
0.015
AM BAND COVERAGE
+B
FM / AM IF MPX.
FM MUTE LEVEL
BACK UP
+B +B
MAIN PWB-A1(3/3)
R50 1K
FM IF
IN
AM IF
DET OUT
ST IND
MAX- IN FM- M/ST
R46 56K
R49 2.7K
R48 56K
R47 56K
FM BAND COVERAGE
RF AMP.
SWITCHING
Q3,Q4:VTCONTROL
Q5,Q6:FMRIPPLEFILTER
AM TRACKING
C58
0.022
fL fH

QT-CD131H/132H
– 17 –
78 9101112
Figure 17 SCHEMATIC DIAGRAM (6/6)
SEG10
SEG26
SEG25
SEG24
SEG23
SEG22
SEG21
SEG20
SEG19
SEG18
SEG17
SEG16
SEG15
SEG14
SEG13
SEG12
SEG11
SEG9 SEG8
SEG27
RESET
HOLD(KE0)
PLL(CLOCK)R92(SCK)
PLL(PEREOD)R90(SI)
R80(INT2)
R81(T2)
R82(INT1)
R83(T1)
R70(PULSE)
R71(WTO)
R73(XTOUT)
R72(XTIN)
VLC
P10
VSS P11 P12 P13 P20 P21 P22 P23 COM1 COM2 COM3 COM4 VASS(A/D GND) PLL(DATA)R91(SO)
VDD
R40
R61(AIN5)
R53(AIN3)
R60(AIN4)
R62(AIN6)
R63(AIN7)
R41
R42
KO0
KO1
KO2
KO3
XIN
XOUT
TEST
4.3V
0V
5.2V
R514
1K
R513
1K
XL501
4.19MHz
R511
820
R512
1M
R527
1.8K
R526
10K
C507
0.022
IC502
PST9142
RESET
R506
1.8K
C506
0.022
D503
1N4148
D504
1N4148
D502
1N4148
C502
0.022
C501
10/16
ZD501
MTZJ5.6A
C504
0.022
C503
100/10
R501
220
R529
1K
Q501
2SC1815GR
R507
100K 5.6K
R508
D506
1N4148
C511
0.1/50
D505
1N4148
C512
0.047
Q502
2SC1815GR
R510
47K
R509
10K
C509
0.01
L501
470µH
LCD501
R530
1K
1 4
1
4
FW501
L503
470µH
+B
R505
2.7K C505
2.2/50
L502
470µH
D501
1N4148
+B
BI501
1
2 3 4
5
6
7
8
9
1 2 3 4
5
6
7
8
9
10 10
CNS501
BACK UP +B
MONO/STEREO
MUTE
TUNED
STEREO
GND(D)
PLL(PERIOD)
PLL(DATA)
PLL(CLOCK)
+7.3V
SW501
BAND
R519
1K
R521
10K
R518
3.3K
SW503
TUNER
UP
SW502
TUNER
DOWN
R516
5.6K
R517
5.6K
SW504
MEMORY
R515
8.2K
SW506
PRESET
DOWN
SW505
PRESET
UP
R525 10K
R524
3.3K
R523
1K
SWITCH PWB-B2
TUNER DISPLAY PWB-B1
1 2 3
4
5
6
7
8
9
10
11
12 13
14
15 16 17 18 19
20 21
20
23
24
25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40
41 42 43 44 45 46 47 48 49 50 51
52 53 54 55 56 57 58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
7879
80
1 2 3 4 56789
10 11 12 13 14 15 16 17 18 19 20 21
2.6V
2.6V
2.6V
2.6V
2.6V
2.6V
2.6V
2.6V
2.6V
2.6V
2.6V
2.6V
2.6V
2.6V
2.6V
2.6V
2.6V
2.6V
2.6V
2.6V
C510
0.01
C508
0.022
C530
0.022
C513
0.01
IC501
IX0003SJ
TUNER CONTROL
MICROCOMPUTER
P16 5 - A
TO MAIN PWB
CNP501
VAREF R50(AIN0) R51(AIN1) R52(AIN2)
21
22
23
24
R528
10K
+B
+B
R502 560 R503 560 R504 560
1
2
3
R520 1K R522 1K
RESET
RESET

QT-CD131H/132H
– 18 –
Figure 18 WIRING OF P.W.BOARD (1/3)
A
B
C
D
E
F
G
H
1234 5 6
• The numbers 1 to 12 are waveform numbers shown in page 22.

QT-CD131H/132H
– 19 –
Figure 19 WIRING OF P.W.BOARD (2/3)
78 9101112
F3895AF
D652
D654
C651
D651
D653
C653
F651
T1.25A
L 250V
C652
C654
CNS602
SPEKERS
SP502 SP501
L-CHR-CH
FM ROD ANTENNA(213)
BK
BK RD WH
RECORD/PLAYBACK
HEAD(241-4)
ERASE HEAD
(241-5)
TAPE
BK
CNS101
BK
WH
RD
BK
4
3
2
1
BR
COLOR TABLE
RD(R)
OR
YL
GR
BL
VL
GY
WH(W)
BK
PK
BROWN
RED
ORANGE
YELLOW
GREEN
BLUE
VIOLET
GRAY
WHITE
BLACK
PINK
T601
POWER
TRANSFORMER
(236)
(211)
BATTERYS
DC12V ["D"size(UM/SUM-1,
R20 or HP2)battery 8]
+
YL
TAPE MOTOR
(241-6)
M601
TAPE MAIN
(241-7)
SW601
CNS201
1
2
3
WH
BK
RD
1
2
+
-
+
-
SPENDLE MOTOR
PICKUP IN
M701
SLED MOTOR
M702
CNP803
SW702
1
2
3
4
5
6
54321
78 654321
PICK UP UNIT
CD MOTOR PWB-C
TERMINAL PWB-A3
BR
RD
RD
RD
OR
OR
SO651
AC SOCKET
AC 230-240V
50Hz
YL
YL
BK

QT-CD131H/132H
– 20 –
Figure 20 WIRING OF P.W.BOARD (3/3)
A
B
C
D
E
F
G
H
1234 5 6
R521
R525 R523 R524
R519 R518 R515 R517
R516
SW503
TUNER
UP
SW502
TUNER
DOWN
SW504
MEMORY
SW501
BAND
SW505SW506
FW501
DOWN
PRESET
PRESET
UP
1 5
10 15
20 30 35
45
50
55
60
70
75
24 25
40
41
64
65
80
1
21
15
10
5
R520 R522
R530
R526
R527
R512
R511
R510
R509
R508
R502
R503
R504
R501 ZD501
D504
D503
D502
D501
C503 C501
C502
LCD501
FW501
XL501
L501
C510 C509
C511 C505
C506
IC502
C512
R506
R513
R514
R529
D506
D505 R507
C504
C508
L503
R528
R505
Q501
Q502
C507
C513
BI501
IC501
1
4
1 2 3 4 5 6 7 8 9 10
CNS501
P18 3 - G
TO MAIN PWB
CNP501
BR BK BK BK BK BK BK BK BK BK
110
L502
2
3
1
E C B
B C E
41
BK
RD
CNS502
1
2CNP502
TO MAIN PWB
P18 6 - C
BATTERYS
DC3V ["AA"size(UM/SUM-3,R6 or HP-7)
batteryx2 for tuner memory]
BATTERY PWB-B3 BATTERY PWB-B4
SWITCH DISPLAY PWB-B2
TUNER DISPLAY PWB-B1
(247)