Sharp QT-CD161 User manual

QT-CD161/141
– 1 –
CONTENTS Page
IMPORTANT SERVICE NOTES (FOR U.S.A. ONLY)....................................................................................................... 2
SPECIFICATIONS ............................................................................................................................................................. 2
NAMES OF PARTS ........................................................................................................................................................... 3
REMOTE CONTROL ..........................................................................................................................................................3
DISASSEMBLY.................................................................................................................................................................. 4
REMOVING AND REINSTALLING THE MAIN PARTS..................................................................................................... 5
ADJUSTMENT ................................................................................................................................................................... 6
NOTES ON SCHEMATIC DIAGRAM ................................................................................................................................ 9
TYPES OF TRANSISTOR ................................................................................................................................................. 9
WAVEFORMS OF CD CIRCUIT...................................................................................................................................... 10
BLOCK DIAGRAM ........................................................................................................................................................... 11
SCHEMATIC DIAGRAM / WIRING SIDE OF P.W.BOARD............................................................................................. 14
TROUBLESHOOTING (CD SECTION) ........................................................................................................................... 23
FUNCTION TABLE OF IC................................................................................................................................................ 27
PARTS GUIDE/EXPLODED VIEW
PACKING OF THE SET (FOR U.S.A. ONLY)
• In the interests of user-safety the set should be restored to its
originalconditionandonlypartsidenticaltothosespecifiedshould
be used.
QT-CD161(S)
QT-CD141(BK)
SERVICE MANUAL
SHARP CORPORATION
No. S5929QTCD161/
This document has been published to be used
for after sales service only.
The contents are subject to change without notice.
Illustration: QT-CD161
SECTION QT-CD141
REMOTE CONTROL
DIFFERENCE BETWEEN QT-CD161 AND QT-CD141
QT-CD161
HEADPHONE SOCKET

QT-CD161/141
– 2 –
FOR A COMPLETE DESCRIPTION OF THE OPERATION OF THIS UNIT, PLEASE REFER
TO THE OPERATION MANUAL.
IMPORTANT SERVICE NOTES (FOR U.S.A. ONLY)
AllcheckmustberepeatedwiththeAClinecordplugconnection
reversed.
Anyreading of0.3 voltRMS (thiscorresponds to0.2 milliamp.
AC.) or more is excessive and indicates a potential shock
hazard which must be corrected before returning the audio
product to the owner.
TO EXPOSED
METAL PARTS
CONNECT TO
KNOWN EARTH
GROUND
TEST PROBE
0.15 µ F
1.5k ohms
10W
VTVM
AC SCALE
SPECIFICATIONS
Specifications for this model are subject to change without
prior notice.
BEFORE RETURNING THE AUDIO PRODUCT
(Fire & Shock Hazard)
Before returning the audio product to the user, perform the
following safety checks.
1. Inspect all lead dress to make certain that leads are not
pinchedorthathardwareisnotlodgedbetweenthechassis
and other metal parts in the audio product.
2. Inspect all protective devices such as insulating materials,
cabinet,terminalboard,adjustmentandcompartmentcovers
or shields, mechanical insulators etc.
3. To be sure that no shock hazard exists, check for leakage
current in the following manner.
* Plug the AC line cord directly into a 120 volt AC outlet.
* Using two clip leads, connect a 1.5k ohm, 10 watt resistor
paralleled by a 0.15µF capacitor in series with all exposed
metal cabinet parts and a known earth ground, such as
conduit or electrical ground connected to earth ground.
* Use a VTVM or VOM with 1000 ohm per volt, or higher,
sensitivity to measure the AC voltage drop across the
resistor (See diagram).
* Connect the resistor connection to all exposed metal parts
havingareturnpathtothechassis(antenna,metalcabinet,
screw heads, knobs and control shafts, escutcheon, etc.)
and measure the AC voltage drop across the resistor.
●General
Power source: AC 120 V, 60 Hz
DC 12 V ["D" size (UM/SUM-1,
R20 or HP-2) battery ×8]
DC 3 V ["AA" size (UM/SUM-3,
R6 or HP-7) battery ×2 for tuner
memory]
Power
consumption: Stand-by; 1.5 W Power on; 20 W
Output power: FTC; 2.0 W min. RMS per channel
into 8 ohms from 150 Hz to 20
kHz, with no more than 10 % total
harmonic distortion.
RMS; 2.3 W/CH
(DC operation, 10 % T.H.D.)
Speakers: 4" (10 cm) full-range speaker x 2
Output
terminals: Headphones; 16-50 ohms (recommended; 32 ohms)
Dimensions: Width; 18-15/16" (480 mm)
Height; 6-1/16" (153 mm)
Depth; 10" (254 mm)
Weight: 7.1 lbs. (3.2 kg) without batteries
●Radio
Frequency
ran
g
e: FM; 87.5 - 108 MHz AM; 530 - 1,720 kHz
●Tape recorder
Frequency
response: 50 - 14,000 Hz (Normal tape)
Signal/noise
ratio: 50 dB
Wow and
flutter: 0.25 % (WRMS)
Motor: DC 12 V electric governor
Bias system: AC bias
Erase
system: Magnet erase
●Compact disc player
Type: Compact disc
Signal
readout: Non-contact, 3-beam semi-con- ductor laser pickup
Audio
channels: 2
Quantization: 16-bit linear quantization
Filter: 4-times oversampling digital filter
D/A
converter: 1-bit D/A converter
Wow and
flutter: Unmeasurable (less than 0.001% W. peak)

QT-CD161/141
– 3 –
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. Band/Pause:
10. Tuner Memory
11. Volume
12. Power, On/Function Switch
13. Extra Bass Button: X-BASS
14. (CD) Track Down: /Review Button:
15. (CD) Track Up: /Cue Button:
16. (TUNER)Tuning: /(CD) Stop Button:
17. (TUNER) Tuning: /(CD) Play/Repeat Button:
18. FM Telescopic Rod Aerial
19. Headphone Socket (QT-CD161 Only)
20. Battery Compartment
21. AC Power Input Socket
Remote control (QT-CD161 ONLY)
1. (TUNER) Tuning: /(CD) Play/Repeat Button:
2. (CD) Track Down: /Review Button:
3. Band/Pause:
4. (CD) Track Up: /Cue Button:
5. (TUNER)Tuning: /(CD) Stop Button:
1
1
3
3
4
4
5
5
678
2
2
10
9
15
14
171113
12
16
1918
20 21
REMOTE CONTROL (QT-CD161 ONLY)
15
15
Sensor Remote
8" - 20'
(0.2 m - 6 m)
0,2 m - 6 m
Notes concerning use:
●Replace the batteries if the operating distance is
reduced or if the operation becomes erratic.
●Periodically clean the transmitter LED on the
remote control and the sensor on the main unit
with a soft cloth.
●Exposing the sensor on the main unit to strong
light may interfere with operation. Change the
lighting or the direction of the unit.
●Keep the remote control away from moisture,
excessive heat, shock, and vibrations.

QT-CD161/141
– 4 –
1 Rear Cabinet 1. Screw ................. (A1) x10 4-1
2. Socket .................. (A2) x1 4-2
2 Top Cabinet 1. Knob..................... (B1) x1 4-2
(with CD Mechanism/ 2. Screw ................... (B2) x3
Tape Mechanism/ 3. Socket .................. (B3) x1
Main PWB)
3 Main PWB/ 1. Screw ................... (C1) x9 4-3,5-1
Switch PWB/ 2. Socket .................. (C2) x4 4-3,5-1
Headphones PWB 3. Soldering ..............(C3) x3 4-3
(QT-CD161 Only)
4 Tape Mechanism 1. Screw ................... (E1) x4 5-1
5 CD Mechanism 1. Screw ................... (F1) x3 5-1
6 Terminal PWB 1. Screw ...................(G1) x5 5-2
2. Hook.....................(G2) x1
7 Battery PWB 1. Hook..................... (H1) x2 5-3
DISASSEMBLY
Caution on Disassembly
Followthebelow-mentionednoteswhen 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 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.
STEP REMOVAL PROCEDURE FIGURE
Figure 4-3
Figure 4-1
Figure 4-2
(A1)x3
ø3x12mm
(A1)x1
ø3x12mm
(A1)x6
ø3x20mm
Rear Cabinet
Front Cabinet
(B2)x2
ø3x10mm (A2)x1 (B3)x1 Front Cabinet
Top Cabinet (B1)x1
Main PWB
(B2)x1
ø3x10mm
Headphones
PWB
(C1)x6
ø3x10mm
(C1)x2
ø3x10mm
Main PWB
Top Cabinet
(C2)x1
(C3)x3
(C2)x2
Switch
PWB

QT-CD161/141
– 5 –
CD MECHANISM SECTION
Perform steps 1, 2, 3 and 5 of the disassembly method to
remove the CD mechanism.
How to remove the pickup (See Fig. 5-4.)
1. Remove the screws (A1) x 2 pcs., to remove the shaft (A2)
x1 pcs.
2. Remove the stop washer (A3) x1 pcs., to remove the gear
(A4) x 1 pcs.
3. Remove the pickup.
Figure 5-3
REMOVING AND REINSTALLINGTHE MAIN PARTS
Top Cabinet
Tape
Mechanism
CD Mechanism
(F1)x3
ø2.5x10mm
(C1)x1
ø2.5x8mm
(E1)x4
ø3x10mm
(C2)x1
(G1)x2
ø3x10mm
(G1)x1
ø3x10mm
(G1)x2
ø3x10mm
Terminal PWB
Driver
Push
(G2)x1
Rear Cabinet
Figure 5-4
(A1) x2
ø2.6 x6mm
Stop
Washer
(A3) x1
CD
Mechanism
Gear
(A4) x1
Shaft
(A2) x1
Pickup
Figure 5-2
Rear Cabinet
(H1)x1
(H1)x1
Battery PWB Pull
Pull
Figure 5-1

QT-CD161/141
– 6 –
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 6-2 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 1,720 kHz T3 *1
Band — 530 kHz (fL): L4 *3
Coverage
1.4 ±0.05 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 — 87.5 MHz (fL): L2 *1
Coverage 2.0 ±0.1 V
RF 90.0 MHz 90.0 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
*1. Input: Antenna, Output: Pin19 of IC2
*2. Input: Antenna, Output: Speaker Terminal
*3. Input: Input is not connected, Output: TP1
• AM IF/RF
Signal generator: 400 Hz, 30%, AM modulated
• 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. 6-1, 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 6-1 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-CD161/141
– 7 –
TURNING ON THE TEST MODE
Thetypesoftestmodeforthismicrocomputerandspecifictestmodeturning-onprocedureareasfollows.Onlytheunitkeyisused.
The remote control key is not valid. The power must be turned on while two keys are held down.
(1) CD test mode function
The power is turned while the (PRESET ) and STOP (TUNING ) keys are held down.
(2) Tuner test mode function
The power is turned on while the (PRESET ) and PAUSE (BAND) keys are held down.
(3) LCD test mode function
The power is turned on while the (PRESET ) and MEMORY keys are held down.
CD TEST MODE
When the CD test mode is turned on, the CD pickup is moved to the innermost periphery, and the following indication appears.
The operation of CD test mode is as follows.
Indication
(1) The CD pickup is moved with the unit UP key and DOWN key.
UP key: The pickup is slid to the outer periphery.
DOWNkey:Thepickupisslidtotheinnerperiphery.However,whenitreachestheinnermostperiphery,itdoesnotmovefurther
inward.
(2) When the PLAY key is pressed in stop state, the laser diode turns on if CD lid is closed.
Indication
(3) When the PLAY key is pressed in laser ON state, playback is started from the current position of pickup.
Indication
(4) When the STOP key is pressed during playback, the laser goes out and playback is stopped, and the process returns to step
(1). (The pickup position does not change.)
(5) When the MEMORY key is pressed during playback, tracking servo ON/OFF is performed. (Even if the playback is stopped
in servo OFF state, the servo is turned on when the playback is restored.)
Indication The current pickup position and time are indicated. (When the
pickup is moved with the UP/DOWN key, the time at that point
is indicated.)
The current playback track No. and time are indicated.
TUNER TEST MODE
The tuner test mode is intended to store the measurement frequency for adjustment and inspection in the preset memory CH
without frequency adjustment in the case of tuner adjustment in the production line.
When the power is turned on while the PRESET (DOWN) key and BAND (PAUSE) key are held down together, the frequency
foradjustmentmeasurementofdestination(specifiedaccordingtoAREAterminal)ispreset-storedinthepresetmemoryCH.(The
frequency to be preset-stored for specific destination is as shown in the next page.)
Others
While the CD lid is open (LID-SW = "H"), the test mode is turned on but the operations of step (2) and subsequent steps are not
performed. The operation of step (1) is performed.
Contents of error display
Error display Contents of an error
Er 01
Er 02 when TOC information cannot be read normally.
When a PU-IN SW detection error occurs.

QT-CD161/141
– 8 –
In the tuner test mode the band is FM, and the mode is FM STEREO in case of start-up.
As with the ordinary mode, when the PRESET key is pressed for 1ch of preset memory CH, maximum CH is set. When the
PRESET key is pressed for maximum CH of preset memory CH, 1ch is set.
The BAND key is valid. As in the ordinary mode, the band/FM MONO/STEREO mode can be switched.
To exit from the tuner test mode, turn off the power to the microcomputer.
Indication Theindicationisthesameasthatofordinaryoperation.However,
whenthetestmode isturnedon,the indicationshownleftlights
for one second.
Preset frequencies for various destinations (random preset memory)
BAND (CH) U.S.A. EUROPE GENERAL 1 GENERAL 2
1 FM 87.5M FM 87.50M FM 87.50M FM 87.5M
2 FM 108.0M FM 108.00M FM 108.00M FM 108.0M
3 FM 98.0M FM 98.00M FM 98.00M FM 98.0M
4 FM 90.0M FM 90.00M FM 90.00M FM 90.0M
5 FM 106.0M FM 106.00M FM 106.00M FM 106.0M
6 AM 530K AM 522K AM 531K AM530K
7 AM1720K AM1620K AM1602K AM1620K
8 AM 990K AM 990K AM 990K AM 990K
9 AM600K AM 603K AM 603K AM 600K
10 AM 1400K AM 1404K AM 1404K AM 1404K
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
Note:
The unit shown in table is Hz. K is x1000. M is x1,000,000.
The slash indicates that data are not stored in the memory.
FM is stereo mode.
LCD TEST MODE
When the LCD test mode is turned on, all the segments of LCD light.
Indication

QT-CD161/141
– 9 –
NOTES ON SCHEMATIC DIAGRAM
1. Tuner
( ): AM mode
Marking except for ( ): FM mode
2. CD
( ): Play mode
Marking except for ( ): Stop state
3. Deck section
( ): Record mode
Marking except for ( ): Playback mode
Display / Control section:
( ): Active state
Marking except for ( ): CD Function mode at stop state
• Schematic diagram and Wiring Side of P.W.Board for this
model are subject to change for improvement without prior
notice.
• Parts marked with “ ” ( ) are important for
maintaining the safety of the set. Be sure to replace these
parts with specified ones for maintaining the safety and
performance of the set.
• Resistor:
To differentiate the units of resistors, the symbol as K and M
are used: the symbol K means 1000 ohm and the symbol M
means 1000 kohm and the resistor without any symbol is an
ohm resistor. The resistor designated "Fusible" is a fuse type
resistor
• Capacitor:
To indicate the unit of capacitor, a symbol P is used: this
symbolPmeansmicro-micro-faradandtheunitofthecapacitor
withoutsuchasymbolismicrofarad.Astoelectrolyticcapacitor,
the expression “capacitance/withstand voltage” is used.
(CH), (TH), (RH), (UJ): Temperature compensation
(ML): Mylar type
(P.P.): Polypropylene type
•Theindicated voltage ineachsection is theonemeasured by
Digital Multimeter between such a section and the chassis
with no signal given.
SW102 RECORD/PLAYBACK PLAYBACK
SW201 FUNCTION/POWER TAPE—TUNER—CD/
OFF—ON
SW202 X-BASS OFF—ON
SW501 TUNER UP OFF—ON
SW502 TUNER DOWN OFF—ON
SW503 BAND OFF—ON
REF. NO DESCRIPTION POSITION
SW504 MEMORY OFF—ON
SW505 PRESET DOWN OFF—ON
SW506 PRESET UP OFF—ON
SW507 CD LID OPEN/CLOSE OFF—ON
SW601 TAPE MAIN OFF—ON
SW702 PICKUP IN OFF—ON
Figure 9 TYPES OF TRANSISTOR
REF. NO DESCRIPTION POSITION
KTA1266 GR
KTA1273 Y
KTC3194 Y
KTC3199 GR
KTC8050 D
KRA102 M
KRA109 M
KRC104 M
KRC107 M
FRONT
VIEW
E C B
(S)(G)(D)
(1) (2) (3)

QT-CD161/141
– 10 –
WAVEFORMS OF CD CIRCUIT
1
1
3
5ms
0.50 V
IC801 20 F.E
1
5ms
5.0 V
IC801 54 DRF
STOP PLAY
FOCUS SERCH
2
0.5ms
1.00 V
HF
0.5ms
5.0 V
HFL
0.5ms
5.0 V
TES
1
2
3
CUE
4
5
3
0.5ms
1.00 V
H.F
1
2
3
0.5ms
5.0 V
HFL
0.5ms
5.0 V
TES
REVIEW
4
5
3
0.5ms
10.0 V
JP+
0.5ms
10.0 V
JP-
0.5ms
0.50 V
JP
0.5ms
1.00 V
TE
6
7
9
8
6
7
9
8
50ms
10.0 V
JP+
CUE
50ms
10.0 V
JP-
50ms
0.50 V
JP
50ms
1.00 V
TE
6
7
9
8
6
7
9
8
11
10
11
10
12
12
REVIEW
50ms
10.0 V
JP+
50ms
10.0 V
JP-
50ms
0.50 V
JP
50ms
1.00 V
TE
0.5ms
10.0 V
JP+
0.5ms
10.0 V
JP-
0.5ms
0.50 V
JP
0.5ms
1.00 V
TE
PLAY
20ms
1.00 V
SPO NORMAL DISC
TN0=01
20ms
2.00 V
CLV+
PLAY
TCD-712 (140mm)
TN0=01
50ms
1.00 V
SPO
50ms
2.00 V
CLV+
PLAY
TCD-712
5s
100mV
SLD
1
0.5s
100mV
SLD
1

QT-CD161/141
– 11 –
Figure 11 BLOCK DIAGRAM (1/3)
62 51 37 46
56
39
55
38
54
33
53
32
11
8
4
2
~
+5V
FOCUS COIL
TRACKING COIL
PICKUP UNIT
18
28
29
13
3
25
26
5
20 6
21
49
50
52
53
51
54
Q804
+5V
23
6
63
43
64
10
44
12
45
9
14
13
43
16
44
17 18 19 20
15
3240
1
61
58
57
CL, DAT, SELIAL CONTROL
CONSTANT
VOLTAGE
REGULATOR
16
27
31
28
15
30
29
MM
M702
SLIDE
MOTOR
M701
SPIN
MOTOR
1234
+7.4V
(CD)
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
IC802
LC78622E
SERVO/SIGNAL
CONTROL
16.93MHz
XL801
SLI
SLC
CV+
JP–
DRF
CE
DAT
CL
CLK
DEF
SLD
SLEQ
SPO
FD
TO
SL+ SL–
F E FIN1 FIN2
64
62
+5V
Q801
VCC1
LDD
LASER
DRIVER
SERVO AMP.
LA9240M
IC801
30
1
+7.4V
978
22 24
10
25
11
IC803
LA6541
FOCUS/TRACKING
/SPIN/SLIDE
DRIVER
TO MAIN
SECTION
TO MAIN
SECTION

QT-CD161/141
– 12 –
Figure 12 BLOCK DIAGRAM (2/3)
65
8
2
10
11
12
5
18
9
6
12
IC202
LA4597
POWER AMP. L
VOLUME
X-BASS SW202
A,B
VR201
A,B
STANBY
Q201
Q202
Q251
R
2
1
3
IC203
KIA7808P
VOLTAGE
REGULATOR
+B2
+B1
SP501
SPEAKERS
SP502
SO601
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
REC / PB
SW102
A,F
P. B REC
IC101
EQULIZER
AMP.
BA331IL
REC
REC
P.B
P.B
P.B
LR
LR
SW102
REC / PB
B.D
REC / PB
SW102
C,E
L-CH
REC / PB
HEAD
FROM
CD/DISPLAY
SECTION R-CHERASE
HEAD
SW102-H
REC / PB
BIAS
OSC.
Q351
L301
SW201-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 120V
60Hz
L-CH R-CH

QT-CD161/141
– 13 –
Figure 13 BLOCK DIAGRAM (3/3)
X IN
FM IN
X OUT
VSS
AM IN
IF IN
VT
AM MIX OUT
X1
4.5MHz
DOUT
DATA
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
FM DET
T2
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
FM+B
FM ROD
ANTENA
24
22
20
18
13
16
10
15
9
1
2
8
7
6
5 3
4
5
6
12
11
10
2
1
13
14
1
6
3
4
9
7
8
IC3
TC9216P
PLL
+B
21 +B
+B
IC2
LA1805
FM /AM/IF APX.
IC1
TA7358AP
FM FRONT END
5
T3
AM IF
Q5
Q6
AM OSC OUT
VT CONTROL
Q3
Q4
L3
AM ANT.
VD3-1
TC1
L4
AM OSC.
VD3-2
23 24
3
4
5
6
19
20
13
13
14
11
13
76
79
56
72
27 24 32 31 23 12
22
16 10 76
17
SW504
MEMORY
SW503
BAND
SW502
TUNER DOWN
SW501
TUNER UP
SW505
PRESET DOWN
SW506
PRESET UP
LCD DISPLAY
LCD501
11
10
9
8
7
6
5
4321
12131415 1617 1819 2021
MONO/ST
IC501
CD/TUNER CONTROL
MICROCOMPUTER
Q501
Q502
TUNER
+B
IC502
RESET
RX501
RESET
A-GND
AUDIO
+12V
+5V
VOLTAGE
REGULATOR
ZD1
D GND
TUNER +B
SW601
MAIN
,
SW702
PICKUP IN
~~
TO CD
SECTION
X501
RF AMP.
CLOCK

QT-CD161/141
– 14 –
• The numbers 1 to 12 are waveform numbers shown in page 10.
Figure 14 SCHEMATIC DIAGRAM (1/6)
A
B
C
D
E
F
G
H
1234 5 6
R813
33K
R830
1K
C804
0.001 R804
2.2K
R808
12K
C806
0.033
C845
4.7/50
R871
4.7K
R842
22
C848
1/50
C808
0.068
R805
6.8K
C805
0.033
R802
100K
R8
5
68
0
C850
0.1
R816
1.5K
C814
0.01
C820
0.0033
R827
220K
R823
1.2K
C811
0.1
C812
330P
C817
0.47/50 R824
10K
C810
180P
R803
15K
C834
0.033
R832
56K
C831
0.0027
R838
33K
R810
82K
D802
1N4148
R849
100K
C851
0.022
C821
1/50
R828
1K
C807
0.1/50
C839 0.1
C846
C887 0.022
R839
22K
R840
22K
C813
0.1
R812
15K
R829
1K
R814 10K
R815
47K
R837
47K
C832
27P R834
1K
C822
220P
C809
0.047
R811
3.3K
R822
6.8K
IC801
LA9241M
SERVO AMP.
48
47
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
34
33
16
15
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
2
1
C837 10/16
C838 0.01
C835 0.1/50
C840 0.33/50
R820 10K
R819 39K
R817
82K
C815
0.0047
C819
47/16
R825
1.2K
R826
220K
R835
470
C830
2.0P
C833
0.001 R836
47K
R809
27K
R807
1K
R806
100
C803
0.1/50
R833
5.6K
R821
56K
C816
0.001
R8
1.
2
R831
1K
Q801
KTA1266 GR
LASER
DRIVE
C849
0.022
RES
CQCK
CO IN
RWC
SL+
SL–
DRF
SQOUT
WRQ
PU IN
D-GND
R-CH
POWER GND
VCC1
NC
TBC
FSC
GND
SLI
SLC
RFS–
RFSM
CV+
CV–
SLOF
HFL
TES
TOFF
TGL
JP+
JP– A GND FE– FE FA– FA
TO
JP
TE
TE–
TESI
TH
SCI
TA
TD–
TD
TB
F
E
FIN1
FIN2
FD–
FD
SPD SP– SPG SP NC SL+ SL– SLD SLEQ
VREF
GND
+B 7.4V
L-CH
AUDIO GND
64 63 62 61 60 59 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
2
3
4
5
6
7
8
9
10
11
1
15
13
14
16
45
+
B
+B
C818
1/50
LDS
LDD
BH1
PH1
LF2
VR
REFI
VCC2
FSS
DRF
CE
DAT
CL
CLK
DEF
MAIN PWB-A1(1/4)
CD SIGNAL
P19 8-H
P16 1-F
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
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-CD161/141
– 15 –
Figure 15 SCHEMATIC DIAGRAM (2/6)
• NOTES ON SCHEMATIC DIAGRAM can be found on page 9.
78 9101112
R876
10K
R873
100
C890
100/10
C867
10/16
R874
100
C868
10/16
R875
10K
C870
0.0022
C869
0.0022
R858
680 XL801
16.93MHz
R880
100
C843
100/10 C873
0.01
L801
0.82µH
L802
0.68µH
Q802
KTA1273 Y
C846 330/10
C844
330/10
C888 0.022
R860
1K
IC802
LA78623D
SERVO/SIGNAL
CONTROL
48
47
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
34
33
16
15
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
2
1
C847
0.01
C842
0.047
R857
27K
R856
1.2K
C841
0.047
C802 47/16
R801
1K C801
0.01
1
2
3
15 16
30
IC803
LA6541
FO+
FO–
TR–
TR+
TR+ TR– FO– FO+
K
A
B
E
F
TEST1
CS
TEST5
4.2M
16M
TST11
RES
CQCK
COIN
RWC
SQOUT
WRQ
FSX
SBCK
EFLG
SFSY
SBSY
PW
XVSS
XIN
XOUT
XVDD
MUTER
RVDD
RCHO
RVSS
LVSS
LCHO
LVDD
NC
MUTEL
TEST4
TEST3
DOUT C2F EMPH CONT5 CONT4 CONT3 CONT2 CONT1 VDD
FSEQ PCK JP- JP+ TGL TOFF
TES
HFL
V/P
CLV–
CLV+
TEST2
EMFIN
EMFO
Vss
FR
VVDD
ISET
VVss
PDO
TAI
DEFI
GND VO4–
VO4+
VIN4
VIN4G
BIAS IN
VCC
VG3
VIN3
VO3+
VO3–
GND
VO2–
RESET
REG OUT
REG-B
GND
VIN2
VG2
VO2+
MUTE
VO1–
VIN1
VO1+
GND
GND
GND
VCC
VG1
CD
TUNER GND
6
4 6
3 6
2 1
6 6
0595
8 5
7 6 5 5
5 5
4 5
3 5
2 5
1 0
5 4
9
32
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
4
5
6
7
8
9
10
11
12
13
14 17
18
19
20
21
22
23
24
25
26
27
28
29
+B +B
PU-IN
SL–
SL+
SP–
SP+
1
BI802
2
3
4
5
1
BI801
2
3
4
5
6
7
8
6
5
4
3
2
1
BI803
6
5
4
3
2
1
CNS803
1
CNS802
2
3
4
5
1
CNS801
2
3
4
5
6
7
8
6
5
4
3
2
1
CNP803
CD MOTOR PWB-B
M
M702
SLED
MOTOR
M
M701
SPINDLE
MOTOR
SW702
PICKUP IN
PD
VR
LD
E
K
C
B
A
F
M0N
LD
FO–
FO+
TR+
TR–
TR–
F
B
A
E
K
1
2
3
4
5
1
2
3
4
5
6
7
8
LD
PD
GND
FO–
FO+
TR+
TR–
VR
PICKUP UNIT
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
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
9
8
7
6
5
4
3
2
1
12
11
10
PIN
NO. VOLTAGE
IC803
7.2V
0V
2.8V
0V
3.6V
0V
GND
GND
GND
3.2V
3.2V
0V
2.6V
5.1V
6.6V
15
14
13
18
17
16
21
20
19
23
22
26
25
24
29
28
27
30
PIN
NO. VOLTAGE
GND
GND
3.2V
3.2V
0V
2.6V
0.4V
7.2V
0V
0V
2.5V
2.6V
3.5V
2.9V
GND

QT-CD161/141
– 16 –
Figure 16 SCHEMATIC DIAGRAM (3/6)
• NOTES ON SCHEMATIC DIAGRAM can be found on page 9.
A
B
C
D
E
F
G
H
1234 5 6
C252
0.022
R
2
R
2
C152
0.039
(ML)
C151
0.039(ML)
D303
1N4004
R457
1.2K
R458
1.2K
R456
15K
R455
15K
C351
0.0022
(ML) C352
220/10
Q351
KTC8050 D
R354
10(1/4W)
R353
47K(1/4W)
C353
0.0056
(ML)
R351
330
(1/4W)
R352
150
(1/4W)
L301
C354 0.022(ML)
R123
3.3K
R121
2.7K
SW201-A
R154
2.2K
SW201-B
R153
2.2K
R124
3.3K
R104
12K
R105
15K(1/4W)
C108
820P(B)
C107
(B)820P
R101
330
R102
330
R103
12K
C105
0.0018(B)
R106
15K
C106
0.0018(B)
R109
120
C116
0.018
(ML)
C113
47/16
IC101
BA3311L
REC./P.B.
EQUALIZER
10
9
8
5
2
R114
8.2K
R116
3.9K
C118
10/16
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(Z)
C121
0.01
R122
2.7K
R110
120
C114
47/16
C110
270P(B)
R108
1K
R107
1K
C111
330P(B)
C112
330P(B)
C109
270P(B)
C123
220/10
D103
1N4148 SW202-A
X-BASS
SW102-G
SW102-E SW102-D
SW102-H
SW102-B
SW102-C
FUNC(CD)
+7.4V
P19 7-A,11-H P14 2-H,P19 11-HION
BACK UP
D GND
TUNER +B
GND(A)
L-CH
R-CH
P18 3-A,4-A
SW202-B
X-BASS
OFFON
OFFON
TAPE
TAPE
TUNER
PRE AMP
ERASE HEAD
R-CH
L-CH
R
R
R
R
PP
P
P R P
R-CH
AUDIO GND
L-CH
CD +7.4V
DIGITAL GND
POWER GND
MUTE
CD
CD
TUNER
P R
R P
PR
OUT1
OUT2
IN1
IN2
NF2
NF1
GND
VCC
FILTER
ALC T
11
2 2
33 44
CNS101 CNP101
3 1
12
7
6
4
11
SW102-A
SW102-F
40
28
32
23
22
21
44
42
43
12
16
15
14
13
1
FM SIGNAL
CD SIGNAL
PLAYBACK SIGNAL
RECORD SIGNAL
+B
+B
+B
+B
MAIN PWB-A1(2/4)
BIAS OSC

QT-CD161/141
– 17 –
Figure 17 SCHEMATIC DIAGRAM (4/6)
78 9101112
R152
22K
R151
22K
SO601
ACSO
T601
POWER TRANSFORMER
C654
0.022(Z) C651
0.022(Z)
D651 IN4004
D652
1N4004
C652
0.022(Z)
C653
0.022(Z)
D654
1N4004
D653
1N4004
TERMINAL PWB-A3
DC12V [ ''D'' SIZE(UM/SUM-1,
R20 OR HP-2)BATTERY x 8]
DC 3V [ ''AA'' SIZE(UM/SUM-3
R6 OR HP-7)BATTERY x 2
FOR TUNER MEMORY]
BATTERY PWB-A4,5
AC INPUT
AC120V,60Hz
+B
R251
10K
3
2
1
R230
2.7(1/4W)
D252
1N4148
R254
10K
R256
4.7K
D251
1N4148
R252
22K
Q251
KTA1266 GR
R253
1.8K
R255
2.2K
C302
0.047(Z)
SW201-C
SW201-D
TAPE
CD
TAPE
TUNER
CD
TUNER
C301
1/50
CNP602
+B
IC203
KIA7808P
1
2
3 IN
OUT
VOLTAGE
REGULATOR
D301
1N4148
D302
1N4148
R221
1K
C227
4700/25
C233
470/10
C219
0.068
(ML)
C220
0.068
Q202
KTC3199 GR
C231
0.1
(ML)
C232
0.1
(ML)
C234
470/10
C230
100/10
C225
220/25
C222
0.001(B)
IC202
LA4597
POWER
AMP.
13
12
11
1
0
9
7
6
4
3
2
1
C229
100/10
C221
0.001(B)
Q201
KTC3199 GR
R223
4.7K
C226
0.022(Z)
D201
1SS133
R224
4.7K
R222
1K
C223
100/10
C224
100/10
R225
100K
C228
1/50
C218
0.0027(B)
R220
3.3K
C217
0.0027
(B)
R219
3.3K
C216
0.027(ML)
C215
0.027(ML)
VR201-A
20K(B)
VR201-B
20K(B)
+
+
–
–
5 8
3
2
1
CNS602
R227
120(1/4W)
R228
120(1/4W)
3
3
3
2
1
1
1
SP501
L-CH
3
2
1
SP502
R-CH
WOOFER
8OHMS
CNS201
CNP201
3
2
1
CNP201
SPEAKER
WOOFER
8OHMS
SP501
L-CH
3
2
1
SP502
R-CH
WOOFER
8OHMS
CNS201
SPEAKER
WOOFER
8OHMS
HEADPHONES PWB-A2
FW202
M
M601
TAPE MOTOR
+
–
SW601
TAPE
MAIN SW
QT-CD141
QT-CD161
< >: 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-CD161/141
– 18 –
Figure 18 SCHEMATIC DIAGRAM (5/6)
• NOTES ON SCHEMATIC DIAGRAM can be found on page 9.
A
B
C
D
E
F
G
H
1234 5 6
8
7
3
2
6
5
4
9
1
C12
0.022
C7
0.001
R2
100K
C6
0.01(M)
D2
1SS133
C4
27P(CH)
C2
0.01
C3
4.7P(CH)
T1
R56
47
R3
33K
CF1
C16
0.022(M)
C14
0.022
R1
22(1/4W)
C5
0.01(M)
C13
47/16
IC1
TA7358AP
F1
C8
15P(CH)
L1
R7
4.7K
VD1
KV1360NT
C10
24P
(UJ)
FM OSC L2
14
15
1
2
4
5
3
6
7
8
20
19
18
17
16
24
23
22
13
TP2
21
12
11
9
10
TP1
C42
3.3/50
C32
0.022 C31
0.022
C33
22/16
C38
0.018
C41
3.3/50
IC2
LA1805
FM/AM/IF MPX.
C36
0.0022
R29
1.2K
VR1
6.8K(B)
C43
0.0015
(STYROL)
R30
15K
T2
R25
33K
C47
1/50
R37
6.8K
C48
1/50
R38
6.8K
C40
470P
C34
220/10 C35
0.022
C49
1/50
T3
CF2
R35
2.2K C45
0.022(M)
R36
2.2K
C46
0.022(M)
C37
0.022
R44
180(1/4W)
R17
10K
R42
4.7K
D3
1SS133
10K
R39
R43
47K
R24
3.9K
Q9
KRA109 M
R70
22K
Q4
KTC3199 GR
C25
0.001
C24
2.2/50
R15
1.2K
Q3
KTC3199 GR
Q3,Q4:VT
CONTROL
D4
1SS133
24 25 26
R9
100K
VD3-1
KV1591A-2
C17
0.047
R12
4.7K
L4 R10
68K
VD3-2
KV1591A-2
C19
12P(UJ)
C20
470P
R11
56K
L3
C18
0.022
C52
0.022
C51
10/16
9
10
11
12
13
14
15
16
1 2 3 4
5
6
7
8
X1
4.5MHz
C29
12P(CH)
C30
15P(CH)
ZD1
DZ5.1BSB
R20
6.8K
R18
47K
C27
0.022
IC3
TC9216P
@
PPL
C50
0.022
R45
220(1/4W)
R52
1K
R48
56K
R47
56K
R46
56K
R50
1K
R51
1K
C21
0.022
Q5
KRA102 M
Q6
KRC104 M
Q5,Q6:FM RIPPLE FILTER
C56
0.01
L5
CH 470µH
C57
100/10
C26
0.022 R6
560
R13
390
Q1
KTC3194 Y
RE AMP.
R8
47K
C9
33P(CH)
R4
10
R5
10K C11
22P(CH)
R71
6.8K
VD2
KV1360NT
R16
2.2K
TC1
5P
21 22 23 28 29 30 31 32
C60
100P
R72
1K
C58
0.01
C71
0.022
C59
0.022 C70
0.001
C22
0.01(M)
C28
2.2/50
C72
0.001
FB
B.P.F
FM IF
IN
MIX
AM
AM
AM
OSC
AM RF
+B
+B
FM
FM DET
MPZ
–IN
AM IF
GND
TUN IND
VCO
NC
AM/FM
L CH
R CH
GND(D) TUNER +B PLL(DATA) PLL(CLOCK) PLL(PERIOD) MONO/STEREO STEREO TUNED
AM TRACKING
fL fH
IF-IN
AM-IN DO 1 DO 2
VDD GND
(M)
R-CH GND(A) L-CH
FM FRONTEND
1
3
2
1
2
3
1
23
FM
ROD ANTENA
123
D1
1SS133
FM IF
FM RF
FM BAND
COVERAGE
2
3
1
+B
1 2
3
AMIF
FM DET
+B
+B
+B
VCO
+B
+B
AM BAND
COVERAGE fL
AM OSC
AM ANT
MAIN PWB-A1(3/4)
I/O5(ST) OT-3
OT-2
OT-1
PERIOD
FM-IN
CLOCK
DATA
X IN
X OUT
+B
FM SIGNAL
AM SIGNAL
+B
FM
–M/ST
DTE OUT
ST IND
P19 8-A,P16 1-E
P16 1-E
9
8
7
6
5
4
3
2
1
16
15
14
13
12
11
10
PIN
NO. PIN NO.
VOLTAGE VOLTAGE
IC3
2.4V
2.3V
6.8V
0.1V
4.9V
3.0V
––
––
––
––
0V
2.3V
GND
0V
––
0.5V
9
8
7
6
5
4
3
2
1
12
11
10
PIN
NO. VOLTAGEIC2
1.6V
1.6V
6V (6.3V)
0.2V (0.7V)
1.6V
0V
0V
0V
2.5V
2.5V
5.1V (6.6V)
0.8V (1V)
21
20
19
18
17
16
15
14
13
24
23
22
PIN
NO. VOLTAGE
1.2V (0V)
1.9V (1.6V)
1V (1.3V)
1.7V
1.5V (1.7V)
1.5V (1.5V)
0.4V (0.4V)
6.1V (6.4V)
6.1V (6.4V)
1.6V
1.6V
1.6V
( ): AM
9
8
7
6
5
4
3
2
1
PIN
NO. VOLTAGE
IC1
0.9V
1.6V
6.8V
0V
0V
6.8V
1.4V
6.2V
6.8V

QT-CD161/141
– 19 –
Figure 19 SCHEMATIC DIAGRAM (6/6)
78 9101112
R519 560
C512
0.022
C513
0.022
R510 1K
R509 1K
R532
1K
R534 1K R535 1K R536 1K R537 1K
R538 1K
R531
15K R539
1K
Q501
KTC3199 GR
RESET
C509
0.1/50
C508
0.022
IC502
PST9142
RESET
R503
1.8K
D501
1SS133
C502
0.022
ZD501
DZ5.6BSB
C504
0.022
C503
10/16
R501
150 (1/4W)
D502
1SS133
C501
100/10
D505
1SS133
R504
100K
R505
5.6K
D506
1SS133
C510
0.1(M)
R508 56K
R511 560
R512 560
R513 560
Q502
KRC107M
RESET
R523
15K
R518
10K
R517
10K
R524
56K
R520 1K
R522 1K
R521 1K
R533 1K
R507
1K
SW507
CD LID
OPEN/CLOS
SW501 TUNER UP
SW505
PREST
DOWN
SW502
TUNER
DOWN
SW506
PREST UP
SW503
BAND
SW504
MEMORY
R546
15K
R545
5.6K
R544
3.3K
R547
3.3K
C516
100P
IC501
IX0016SJ
CD/TUNER CONTROL
MICROCOMPUTER
R506
2.7K
R541 1K
XL501
4.19MHz
R540
1K
R543
6.8K R542
3.3K
42
43
LCD501
C511
0.022
R527
10K
R528
10K
R526
10K
R530
15K
C519
10/16
R548
47
R550
15K
R549
15K
L501
100µH
C505
0.022 D503
1SS133
D504
1SS133
R502
2.7K
C506
2.2/50
C521
0.0047 R552
1K
3
1
2
MONO/STEREO
STEREO
PLL(PERIOD)
PLL(DATA)
PLL(CLOCK)
TUNED
GND(D)
BACK UP +B
SQ OUT SL+ RWC COIN CQCK RESET DRF PU IN WRQ
+7.4V
SL–
25
26
27
25
27
28
29
30
31
32
33
34
35
36
37
38
39
40
4142434445464748495051525354555657585960616263
80
65
66 67 68 69 70 71 72 73 74 75 76 77 78 79
10 11 12 13 14 15 16 17 1819 20 21 22 23 24
123456789
FUNC(CD) P-MUTE
VL3
COM0 COM1 COM2 COM3 AVSS VREF VCC SEG0 SEG7 SEG6 SEG5 SEG4 SEG3 SEG2 SEG1
VL1
LID SW
CLOCK
DATA
PERIOD
T-MUTE
AREA
KEY1
KEY0
STEREO
MONO/ST
WRQ
SD
PU IN
DRF
RESET
CQCK
COIN
RWC
SL+
SL–
RESET
P-MUTE1 P-MUTE2
SYNC IN
FUNC
VSS
XOUT
XIN
REMOCON
SYS
STOP
SQ OUT
SEG9
SEG10
SEG11
SEG12
SEG13
SEG14
SEG15
SEG16
SEG8
SWITCH PWB-A5
FW501
1
3
1
3
RX501
REMOTE
SENSOR
31
30
29
26
25
24
12
2
1
3 2
1
1
40
+B +B
1
2
3
21
20
19
18
17
16
15
14
1312
11
10
9
8
7
6
5
4
3
2
1
MAIN PWB-A1(4/4)
+B
+B
325
11 10
98764
QT-CD161 ONLY
QT-CD161
ONLY
P16 1-F,P14 2-H
P18 5-A
P14 3-F P16 1-F
< >: 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
9
8
7
6
5
4
3
2
1
12
11
10
PIN
NO. VOLTAGE IC501
3.0V
1.5V
––
––
––
––
––
––
5.0V
5.0V
5.0V
––
2.1V
5.0V
4.6V
4.9V
4.9V
3.9V
––
––
––
––
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
73
72
71
75
74
78
77
76
80
79
32
31
30
64
63
64
63
62
PIN
NO. VOLTAGE PIN NO. VOLTAGE
––
––
––
––
––
––
––
––
––
––
––
2.2V
2.2V
2.2V
2.2V
2.2V
2.2V
2.2V
2.2V
2.2V
2.2V
2.2V
67
66
65
70
69
68
PIN
NO. VOLTAGE
2.2V
2.2V
2.2V
2.2V
2.2V
2.2V
2.2V
2.2V
5.0V
––
––
––
––
––
––
––
––
4.0V
0.5V
––V
5.0V
––
––
2.0V
2.3V
GND
––
5.0V
5.4V
––
––
––
––
––
––
––
––
––

QT-CD161/141
– 20 –
Figure 20 WIRING OF P.W.BOARD (1/3)
• The numbers 1 to 12 are waveform numbers shown in page 10.
A
B
C
D
E
F
G
H
1234 5 6
ABDF
CEHG
B
A
1
2
3
2
3
4
5
1
1
1
2
1
2
3
7
8
9
6
12
13
14
15
11
17
18
19
10
16
21
20
510 15 20
30
35
45
50
60 55
70 75
5
1
6
1
3
2
1
3
2
1
1 2 3
3
2
1
B
C
E
C521
R227
R228
CNP201
CNP201
FW202
2
1
CNS201
1
4
4
1
1
QT-CD161
ONLY BK
WH
WH
WH
WH
BR
GY
GY
GY
GY
GY
BK
WH
WH
WH
WH
WH
WH
WH
SW201
FUNCTION
TUNER
TAPE
OFF
CD
ON
J201
HEADPHONES
IC501
SW102
CNP101
IC203
L301
C227
IC202
C234
IC1
CF1
SW202
X-BASS
X1
LCD501
BI803
R124
R122
R352 R353 R354
R106 R114
R116
R108
R107
R103 R104
R110
R109
R125
D103
R230
R101
R113
R115 D101
R117
R351
R123
R119
R121
R225
D2
R2
R1
D1
R223
R105
R5
L5
R16
R4
R70
C354
C353
C352
C351
C108
C107
C110
C112
C111
C109
C113 C120
C114
C121
C106
C302
C117
C232
C231
C228
C229
C4
C31
C30
C105
C230
C27
C60
C12
C11
C14
C13
C225
C301
FW202
C519
R532
R501
L501
C501
C503
C504
ZD501
R503
FW501
R530
D506 R504
D505
R518
R517
R552
R522
R521
XL501
R540
R541
R253
D252
R254
D251
D301 D302
R256R252
R255
R251
R542
IC801
IC802
C837
C845
C804
C873
C822
C820
C830
C831
C812 C810
C833
C840
C843
C890
R880
R860
R827
R814
R815 R812
R806
R804 R802
R803
R837
R835
R834
R816
R809 R811 R808
R856 R857 R838
R836
R807 R805
L801
R871
BI802
R858
R826
C846
L802
C867
R831
R825
R824
C818
C819 R822 R823
C807
R828
R840 R839
R810
R829
C817
BI801
C848
R874
D201
C887
C870
R876 R456 R458
D303
C851
R849
C835
D802
C821
R15
C24
C7
C3
C8
C29
R6
R8
R875
C869
R873
C868
R222 R224
R221
FW201
SW201
R154
C223 C221
C226
R842
R539
R533
R534
R535
R536
R537
R538
R523 R531
R520
R508
R507
C512
C513
C511
R506
R510
R509 R513 R512 R511
C17
R12
R9
R7
R56
C233
R25
C36 C40
T2
FM DET
R24
C34
C35
C51
R11
C20
C18
R10
VD3
C224
C222
Q802
Q801
R151
R152
R153
C41
C42
R30
D4
C152 C151
C502
R39
C49
C46
C37
R36
R38
C48
R42
C45
R29
C47
R18
R43
R52
R48
R50
R51
R47 R46
C56
C50
ZD1
C57
C33
CF2
C32
C72
D3
C26
R17
C21
C58
R455 R457
R44
C802
R801
C801
C888
C506
D501
D502
R548 J48
C59
R3
CNP602
R526 R527
R528
Q351
Q202
Q6
Q5
Q3
Q4
Q1
IC803
W601
XL801
C16
C6
C5
C2
C22
C806
C805
C809
C811
C839
C838
C850
C834
C842 C841
C847
C510
C116
C115 C220
C219
R13
C252
C71
C70
1 2 3 4 5 6 7 8 9
10 11 12 13
1 3 5 7 9
11
2 4 6 8
10 12
A
CD-TUNER-TAPE
1
80
24
25
40
41
64
(CD + 2-BAND)
D
B
R-CH L-CH
76kHz
-2 -1
R502 D504
D503
RX501
REMOTE
SENSOR
W601
Q251
Q502
Q501
R505
R524
R72
R549
R550
C516
R519
R45
F1
L1
FM RF
L2
C9
R71
VD2
VD1
C25
C10
R37
R35
R20
C28
C803
R833
C832
R832
C118
IC101
R118
R120
C122
C119
C123
D102
R102
R820
C815
R819
R821
C816
C849
C844 R830
C808
C814
R813
C813
R817
MPX VCO CK
Q9
C43
VR1
C38
IC2
L4
AM OSC
C52
C19
TC1
IC3
T1
FM IF
T3
AM IF
IC502
C509
C508 C505
65
R543
Q201
1
5
1
2
345
6
78
16
15
141312
11
10
9
10
12
15
13 20 24
E
C
B
B
C
E
B
C
E
3 2 1
1 2 3
1
2
3
4
5
6
7
89
B C E
B C E
15
10
15
20
16 30
25
E C B
E C B E C B
E C B
1
16
17
32
33
48
49
64
5
10
15
20
25
30
35
40
45
50
55
60
1
16
17
32
33
48
49
64
5
10
15
20
25
30
35
40
45
50
55
60
123
C
1
8
3 2 1
L3
AM BAR ANTENNA
2
3
4
5
1
7
8
9
6
12
11
10
3
3
CN
S
CNS803
1
2
3
4
5
1
2
3
4
5
6
1
2
3
4
5
6
HEADPHONES PWB-A2
MAIN PWB-A1
CD LID
OPEN/CLOSE
SW507
CNS
7
8
BK
BK
CNS602
TO TERMINAL PW
B
CNS201
P21 10-B
FROM
SPEAKER
P21 10-B
FROM
SPEAKER
1 2 3 4
FW201
P22 3-E
TO SWITCH PWB
FW501
P22 6-E
TO SENSOR PWB
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
1
3
1
1
1
4
4
2
3
CD-C161 ONLY QT-CD141
ONLY