Sharp QT-CD210H(BL) Instruction manual

QT-CD210H/W
– 1 –
Illustration: QT-CD210H
CONTENTS Page
SAFETY PRECAUTION FOR SERVICE MANUAL ........................................................................................................... 2
IMPORTANT SERVICE NOTES (QT-CD210H FOR U.K. ONLY).................................................................................... 3
VOLTAGE SELECTION (QT-CD210W ONLY).................................................................................................................. 3
AC POWER SUPPLY CORD AND AC PLUG ADAPTOR (FOR QT-CD210W) ................................................................ 3
SPECIFICATIONS ............................................................................................................................................................. 4
NAMES OF PARTS ........................................................................................................................................................... 5
FITTING OF DIAL POINTER ............................................................................................................................................. 5
OPERATION MANUAL ...................................................................................................................................................... 6
DISASSEMBLY.................................................................................................................................................................. 8
REMOVING AND REINSTALLING THE MAIN PARTS..................................................................................................... 8
ADJUSTMENT ................................................................................................................................................................. 10
SCHEMATIC DIAGRAM .................................................................................................................................................. 12
WIRING SIDE OF P.W.BOARD....................................................................................................................................... 14
NOTES ON SCHEMATIC DIAGRAM .............................................................................................................................. 16
TYPES OF TRANSISTOR ............................................................................................................................................... 16
WAVEFORMS OF CD CIRCUIT...................................................................................................................................... 17
TROUBLESHOOTING (CD SECTION) ........................................................................................................................... 18
FUNCTION TABLE OF IC................................................................................................................................................ 22
PARTS GUIDE/EXPLODED VIEW
PACKING METHOD (QT-CD210H FOR U.K. ONLY)
• In the interests of user-safety the set should be restored to its
originalconditionandonlypartsidenticaltothosespecifiedshould
be used.
SERVICEMANUAL
SHARP CORPORATION
No. S1002QTCD210H
This document has been published to be used
for after sales service only.
The contents are subject to change without notice.
QT-CD210H(BK)
QT-CD210H(BL)
QT-CD210H(S)
QT-CD210W(BK)
QT-CD210W(BL)
QT-CD210W(S)
• Note for users in U.K.
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
Performers Protection Act 1956, the Performers Protection Acts
1963 and 1972 and to any subsequent statutory enactments and
orders.
Illustration: QT-CD210W

QT-CD210H/W
– 2 –
Precaution to be taken when replacing and servicing the Laser Pickup.
The AEL (Accessible Emission Level) of Laser Power Output for this model is specified to be lower than Class I Requirements.
However, the following precautions must be observed during servicing to protect your eyes against exposure to the Laser beam.
(1) When the cabinet has been removed, the power is turned on without a compact disc, and the Pickup is on a position outer than
the lead-in position, the Laser will light for several seconds to detect a disc. Do not look into the Pickup Lens.
(2) TheLaserPowerOutputofthePickupinsidetheunitandreplacementservicepartshavealreadybeenadjustedpriortoshipping.
(3) No adjustment to the Laser Power should be attempted when replacing or servicing the Pickup.
(4) Under no circumstances look directly into the Pickup Lens at any time.
(5) CAUTION - Use of controls or adjustments, or performance of procedures other than those specified herein may result in
hazardous radiation exposure.
SAFETY PRECAUTION FOR SERVICE MANUAL
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 KéYTTéMINEN
MUULLA KUIN TéSSé
KéYTTôOHJEESSA MAINITULLA
TAVALLA SAATTAA ALTISTAA
KéYTTéJéN TURVALLISUUSLUOKAN 1
YLITTéVéLLENéKYMéTTôMéLLE
LASERSéTEILYLLE.
VARNING - OM APPARATEN ANVéNDS
Pè ANNAT SéTT éN I DENNA
BRUKSANVISNING SPECIFICERAS. KAN
ANVéNDAREN UTSéTTAS FôR OSYNLIG
LASERSTRèLNING, SOM ôVERSKRIDER
GRéNSEN FôR LASERKLASS 1.
QT-CD210H for Europe
QT-CD210H for Australia/New Zealand/Thailand/Philippines/QT-CD210W
CAUTION
●This Portable CD Stereo System is classified
as a CLASS 1 LASER product.
●The CLASS 1 LASER PRODUCT label is lo-
cated on the rear cover.
●Useofcontrols,adjustmentsorperformanceof
procedures other than those specified herein
may result in hazardous radiation exposure.
As the laser beam used in this compact disc
player is harmful to the eyes, do not attempt to
disassemble the cabinet. Refer servicing to
qualified personnel only.
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.

QT-CD210H/W
– 3 –
IMPORTANT SERVICE NOTES (QT-CD210H FOR U.K. ONLY)
VOLTAGE SELECTION (QT-CD210W ONLY)
The voltage selector is located on the AC voltage selector box. If adjustment is necessary, use a screwdriver in order to turn the
selector in either direction unitil the correct voltage figure is displayed in the window next the adjustment screw.
QACCA0001SJ00
QACCB0001SJ00
QACCE0001SJZZ QPLGA0250AFZZ
QPLGA0253AFZZ
QT-CD210H for Europe QT-CD210H for U.K.
PROBE
AC OUT UNIT
SHORT-CIRCUT
AC POWER
SUPPLY CORD
CONNECT THE PROBE
TO GND OF CHASSIS
SCREW TERMINAL
WITHSTANDING
VOLTAGE TESTER
LASER KLASSE 1
LUOKAN 1 LASERLAITE
KLASS 1 LASERAPPARAT
Before returning the unit to the customer after completion of a
repair or adjustment it is necessary for the following withstand
voltage test to be applied to ensure the unit is safe for the
customer to use.
Setting of Withstanding Voltage Tester and set.
NG: The “NG” lamp lights and the buzzor sounds.
OK: The “GOOD” lamp lights.
Judgment
Unit
Set current (Cutoff current)
Set time
Set name
Withstanding Voltage Tester
Test voltage
Set value
4,240 VPEAK
3,000 VRMS
6 secs
4 mA
AC POWER SUPPLY CORD AND AC PLUG ADAPTOR (FOR QT-CD210W)

QT-CD210H/W
– 4 –
QT-CD210H/W
SPECIFICATIONS
Specifications for this model are subject to change without
prior notice.
FOR A COMPLETE DESCRIPTION OF THE OPERATION OF THIS UNIT, PLEASE REFER
TO THE OPERATION MANUAL.
●General
Power
consumption:
(QT-CD210H) 8 W
Output power:
(QT-CD210H for
U.K./Australia/
New Zealand/
Thailand/
Philippines/
QT-CD210W)
MPO; 8.4 W (4.2 W + 4.2 W)
(AC operation, 10 % T.H.D.)
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; 400 mm (15-3/4")
Height; 158 mm (6-1/4")
Depth; 212 mm (8-3/8")
Wei
g
ht: 2.2 k
g
(
6.0 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: Unmeasurable (less than 0.001% W. peak)
●Radio
Frequency
range:
(QT-CD210H)
FM; 87.5 - 108 MHz
AM; 526.5 - 1,606.5 kHz
●Tape recorder
Frequency
response: 50 - 14,000 Hz (Normal tape)
Signal/noise
ratio: 50 dB
Wow and
flutter:
(QT-CD210H for
U.K./Australia/
New Zealand/
Thailand/
Philippines/
QT-CD210W)
0.25 % (WRMS)
Motor: DC 9 V electric governor
Bias system: AC bias
Erase system: Magnet erase
Power source:
(QT-CD210H for
Philippines)
AC 220 V, 60 Hz
DC 9 V ["D" size (UM/SUM-1, R20
or HP-2) battery ×6]
Wow and
flutter:
(QT-CD210H for
Europe)
0.3 % (DIN 45 511)
Output power:
(QT-CD210H for
Europe)
MPO; 8.4 W (4.2 W + 4.2 W)
(AC operation, DIN 45 324)
RMS; 4.6 W (2.3 W + 2.3 W)
(DC operation, DIN 45 324)
Power source:
(QT-CD210H for
Australia/
New Zealand/
Thailand)
AC 230-240 V, 50 Hz
DC 9 V ["D" size (UM/SUM-1, R20
or HP-2) battery ×6]
Power source:
(QT-CD210H for
U.K./Europe)
AC 230-240 V, 50 Hz
DC 9 V ["D" size (UM/SUM-1, R20
or HP-2) battery ×6]
Power source:
(QT-CD210W) AC 110-127/220-240 V, 50/60 Hz
DC 9 V ["D" size (UM/SUM-1, R20
or HP-2) battery ×6]
Power
consumption:
(QT-CD210W) 10 W
●Radio
Frequency
range:
(QT-CD210W)
FM; 88 - 108 MHz
AM; 526.5 - 1,606.5 kHz

QT-CD210H/W
– 5 –
NAMES OF PARTS
FITTING OF DIAL POINTER
Figure 5-2
Main
PWB
Main
PWB
Dial Pointer
Drum
Dial
Pointer
Dial Pointer
Top Cabinet
Tuning
Knob
Top Cabinet
Drum
A
Top Cabinet
Drum
Variable Capacitor
B
Setting method of the dial pointer
1. Remove the front cabinet. (Refer to Fig.8-1 on page 8,
"Disassembly method".)
2. Remove the dial pointer.
3. Insert the dial pointer from A of the top cabinet so that it
engages with the drum gear.
4. Fully turn the drum in the opposite direction of B and set
it to the FL marks.
5. Reassemble the front cabinet.
Figure 5-1
FL Mark
Carved Seal
Mark
FH
FL
11. (TAPE) Record Button
12. (TAPE) Play Button
13. (TAPE) Rewind Button
14. (TAPE) Fast Forward Button
15. (TAPE) Stop/Eject Button
16. (TAPE) Pause Button
17. Cassette Compartment
18. CD Compartment
19. CD Eject Button
10. Tuning Control
11. (CD) Stop Button
12. (CD) Track Down/Review Button
13. Volume Control
14. Stand-by, On/Function Switch
15. (CD) Track Up/Cue Button
16. (CD) Play/Pause Button
17. (CD) Play Indicator
18. (CD) Pause Indicator
19. FM Telescopic Rod Aerial
20. Headphone Socket
21. Battery Compartment
22. Voltage Selector Switch (QT-CD210W Only)
23. AC Power Input Socket
123
456789
10
11 16
17
18
13 14 15
12
VOLTAGE
SELECTOR
AC
110V - 127V
AC
220V - 240V
19
21
20
22
23
Illustration: QT-CD210W

QT-CD210H/W
– 6 –
OPERATION MANUAL
4Listening to a CD
5
To stop playback
1
4
23
Label side up.
3Listening to the radio
■
Aerial adjustment
FM AM
1
After use
2
Tune in to the desired station.
2
AC power lead x 1
To AC INPUT
(For U.K.) AC 230 - 240 V, 50 Hz
To an AC socket
1
Check the supplied accessory
2
Preparation for use
■
AC power (For QT-CD210H)
■
Headphones
■
Volume control
■
Tuning the power ON
and to STAND-BY
■
Battery power
1
●QT-CD210H for
customers in Australia and New Zealand
●QT-CD210H for
customers in Philippines
●QT-CD210H for
customers in Thailand and Europe
●QT-CD210H for
customers in U.K.
(For Australia/New Zealand)
AC 230 - 240 V, 50 Hz
(For Philippines) AC 220 V, 60 Hz
●For QT-CD210W ●For QT-CD210W ●For QT-CD210W
VOLTAGE SELECTOR
AC 110V - 127V
AC 220V - 240V
1
2
To AC INPUT
AC 110-127/220-240 V, 50/60 Hz
To an AC socket
■
AC power (For QT-CD210W)
●
6 “D” size batteries (UM/SUM-1,
R20, HP-2 or similar)
●
Batteries are not included.
5
46
132
(For Thailand/Europe)
AC 230 - 240 V, 50 Hz

QT-CD210H/W
– 7 –
6
Recording from CDs
4
56
2
Label side up.
To stop recording
3
1
5
Listening to a tape
1
4
2
To stop playback
3
3
7
Recording from the radio
Do not touch the Laser pickup lens. If fingerprints
or dust accumulate on the pickup, clean it using
commercial cleaning disc (brush type.)
CD pickup cleaning
2
To stop recording
4
6
5
1
Tune in to the desired station.
3
●
4

QT-CD210H/W
– 8 –
1 Top Cabinet/ 1. Screw ................... (A1) x7 8-1
Front Cabinet 2. Socket .................. (A2) x1
2 Power PWB 1. Screw ................... (B1) x2 8-2
2. Hook..................... (B2) x2
3. Socket .................. (B3) x1
4. Hook..................... (B4) x2
3 Main PWB/ 1. Socket ..................(C1) x1 8-2
CD Control PWB 2. Screw ................... (C2) x7
(Note) 3. Screw ................... (C3) x1
4. Solder...................(C4) x3
5. Socket .................. (C5) x3 8-3
6. Screw ................... (C6) x2
4 CD Mechanism 1. Screw ...................(D1) x3 8-3
5 Tape Mechanism 1. Screw ................... (E1) x4 8-3
DISASSEMBLY
Caution on Disassembly
Followthebelow-mentionednoteswhendisassemblingthe
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
beremovedwhen disassemblingtheunit. Afterservicing
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 8-3Figure 8-1
Figure 8-2
CD MECHANISM SECTION
Performsteps1to 4ofthedisassemblymethodtoremovethe
CD mechanism.
How to remove the pickup (See Fig. 8-4.)
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.
Stop
Washer
(A3) x1
CD
Mechanism
Gear
(A4) x1
Shaft
(A2) x1
Pickup
(A1) x2
ø2.6 x6mm
REMOVING AND REINSTALLING THE MAIN PARTS
Figure 8-4
Note : (Figure 8-3 and Figure 8-4)
Afterremoving theconnectorfortheopticalpickup from the
connector, wrap the conductive aluminium foil around the
front end of connector to protect the optical pickup from
electrostatic damage.
(A1)x3
ø3x12mm
Top Cabinet Front Cabinet
(A1)x4
ø3x12mm
Main
PWB
(A2)x1
(D1)x3
ø2.5x10mm (E1)x4
ø3x10mm
(C5)x1
(C5)x2
Top Cabinet
(C6)x2
ø3x8mm
Washer
CD Mechanism
CD Control
PWB
Tape
Mechanism
Top Cabinet
AC Socket
(B1)x2
ø3x12mm
(C2)x7
ø3x12mm
(C3)x1
ø2.5x8mm
Main PWB
Power PWB
(C4)x3
(B3)x1
(B2)x2
(B4)x2
(C1)x1
CD Lid
Switch
Power
Transformer
SW651
(Voltage Selector)
QT-CD210W Only
Power Transformer

QT-CD210H/W
– 9 –
TAPE MECHANISM SECTION
Performsteps1to5ofthedisassemblymethodtoremovethe
tape mechanism. (See page 8.)
How to remove the record / playback and erase
heads (See Fig. 9-1.)
1. Remove the screws (A1) x 2 pcs., to remove the record/
playback head.
2.Remove thehooks(A2)x2pcs.,toward thecenterposition
as shown in Fig. 5-1. and then extract the erase head
upward.
Note:
After replacing the heads and performing the azimuth
adjustment, be sure to apply screwlock.
How to remove the pinch roller (See Fig. 9-2.)
1. Carefully bend the pinch roller pawl in the direction of the
arrow <A>, and remove the pinch roller (B1) x 1 pc.,
upwards.
How to remove the belts (See Fig. 9-3.)
1. Remove the main belt (C1) x 1 pc., from the motor pulley.
2. Remove the FF/REW belt (C2) x 1 pc., from the REW/FF
roller.
3. Put on the belts in the reverse order of removal.
Note:
Whenputting onthebelt, ascertainthatthebeltis nottwisted,
and clean it.
How to remove the motor
(See Figs. 9-4.)
1. Remove the mainbelt.
2.Removethescrew(D1)x1pc.,toremovethemotormount.
3. Remove the screws (D2) x 2 pcs., to remove the motor.
Note:
Whenmountingthemotor,payattentiontothemotormounting
angle.
How to remove the flywheel (See Fig. 9-5.)
1. Remove the belt.
2.Removethestopwasher(E1)x1pc.,withasmallprecision
screwdriver to extract the flywheel from the capstan metal.
Note:
When the stop washer is deformed or damaged, replace it
with a new one.
How to reinstall the parts
Installeachpartin the reverse order oftheremovalwithcare.
Figure 9-1
Figure 9-2
Figure 9-3
Figure 9-4
Figure 9-5
(A1) x1
ø2x7mm(A1) x1
ø2x3mm
Record/Playback
Head
Erase Head
Hook
(A2)x2
<A>
Pinch Roller
(B1)x1 Pinch Roller
Pawl
Motor
REW/FF
Clutch Ass'y
Flywheel
FF/REW Belt
(C2)x1
Main Belt
(C1)x1
(E1) x 1
Stop Washer
Washer
Flywheel
(D1)x1
Special
Screw
Motor Mount
Motor
(D2)x2
Special
Screw Motor
Mount
Motor

QT-CD210H/W
– 10 –
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 Variable 3,000 ±90 Hz Output: Speaker
resistor in Teaminal
motor. (M601) (CNP201 Load
resistance: 4 ohms)
Instrument
Connection
Specified
Value
Test
Tape
TAPE SECTION
Position of each switch or control
Volume control Max
Function switch Tape/Power Off
• Bias Oscillation
Adjustment Point
• Playback Amplifier Sensitivity Check
Instrument Connection
Test Tape
MTT-118 1.1 V ±3 dB Speaker Terminal
(Load resistance: 4 ohms)
Specified Value
ADJUSTMENT
TUNER SECTION
fL: Low-range frequency
fH: High-range frequency
• FM IF/RF
FM Detection T2
FM fL: L2
Band Coverage fH: TC2
FM Tracking fL: 88.0 MHz: L1
fH: 108.0 MHz: TC1
Test Stage Specified
Value/Adjusting
Point
Instrument
Connection
Input: Pin 1 of IC1
Output: Pin 18 of IC1
Iuput: Antenna
Output: Speaker
Terminal (CNP201
Load resistance: 4
ohms)
• AM IF/RF
AM IF T3 Input: Antenna
Output: Pin 18 of IC1
AM fL: L4 Input: Antenna
Band Coverage fH: TC4 Output: Speaker
AM Tracking fL: 600 kHz: L3 Terminal (CNP201
fH: 1,400 kHz: TC3 Load resistance: 4
ohms)
Test Stage Specified
Value/Adjusting
Point
Instrument
Connection
Figure 10 ADJUSTMENT POINTS
• Head Azimuth
Torque Meter Specified Value
MTT-114 Output: Speaker Terminal
(CNP201 Load resistance: 4 ohms)
Adjusting
Point
Specified Value Instrument
Connection
L301 82 kHz ±6 kHz Pin 1 of CNP101
TC4
TC2
TC1
TC3
FM ROD
ATENNA
MAIN PWB
1
13 18
AM BAND
COVERAGE
fL fH
FM
TRACKING
FM BAND
COVERAGE
fL
fH
fH
fL
AM IF
FM
DETECTION
L4
12
24
BIAS OSC.
AM
TRACKING
fL
fH
IC803
L2
CNP101
SW102
IC101
CNP201
VR201
SW201
L1
T3
L301
CNP602
T2
IC1
AM BAR
ANTENNA
1
12
11
2
1
2
3
4
1123
L3

QT-CD210H/W
– 11 –
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
While holding down the "PLAY" button, move the FUNCTION/POWER switch to "CD".
Start
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.
After connecting of the 10kΩresistor between IC802 27 pin and GND and holding down the "PLAY" button, move
the FUNCTION/POWER switch to "CD".
Start
Display
LCD MODE
1. Remove the front cabinet according to the disassembly method.
2. Short the TP of the Figure 11-1 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.)
LASER LIGHTING CONFIRMATION
Figure 11-1
OPEN/CLOSE
SW810
CD LID
BK
BK
10
VC4
TC4
VC3
TC3
VC2
TC2
VC1
TC1
C843 R824
IC803
L2
IC802
R839
C855
C853
C8 6
R862
R844
C824
R846
R861
C21
C3
C2
L1
F1
R4
D2
C22
R7
R6
C11
C1
T3
BI803
R851
C825
R843 C842
R821
C823
R826
C827
R827
C826
R820
C841
C830
C838
R852 C8
2
C828
R828
C83
3
BK
WH
WH
WH
WH
WH
WH
BI801
R80
2
C802
C801
R804
C815
C817
R801
Q801
R853
C839
C835
C834
C805
C807
C806
C856
R11
R8
R9
C16
C17
R10
COR1
T2
C13
C15
C20
C18
C19
C14
R3 C12
CF1
R1
CF3
IC1
C4
D1
C10
R5 C9
C8
C7
C6
R2
L4
CNS801
8
7
6
5
4
3
2
1
1
16
1510
1520
25
30 31
354045 50
51
55
60
65
70
75
80
81
85
90
95
100
1
BCE
5
10
15 16
20
25
30
1
2
3
123
123
1510
12
13
15
2024
C5
MAIN PWB-A1
WH GY GY GY GY GY
2
3
12
13
5
16
17
7
TP

QT-CD210H/W
– 12 –
A
B
C
D
E
F
G
H
1234 5 6
• The numbers 1 to 17 are waveform numbers shown in page 17.
Figure 12 SCHEMATIC DIAGRAM (1/2)
C856
0.001
C832
47/16
C22
0.1/50
L80
0.8
2
D801
1N4004
L4
AM OSC.
Q803
KRC107 M
SWITCHING
R850
1.5K
Q802
KTA1273 Y
SWITCHING
C806
330/16
C805
0.022
C21
2P(CH)
R3 220K
C13 220/10
R126
100
C122
0.01
R10
2.2K R11
2.2K
COR1
CORE
SW201-C
SW201-B
C1 0.022
C20
0.047
C2
18P
(CH)
T3
CF3
460KHz
C14 0.022
IC1
TA2111N
9
8
7
6
5
43
2
1
T2
F1
FMBAND
PASSFILTER
D1
1N4148
R2
2.7K
C4
4P(CH)
C3
24P(UJ)
L2
VC3
CNP101 BI802
BI801
C817
100/10
D2 1N4148
R6
100
C854
0.0068
C807
0.047
R456
15K
R455
15K
R457
1K
R458
1K
R7
120
R853 2.2K
R852 2.2K
R110
120
D101 1N4148
R123
3.3K
R124
3.3K
R851 2.2K
C816
0.022
IC801 TA2109F
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
C814
0.047
C813
47/16
C106
0.0027
R106
10K
R114
8.2K
R105
10K
C107 820P
C114
47/16
D102 1N4148
C118
10/16
R102
150
C109
270P
R109
120
C115
0.018(ML)
R116
3.9K
R115
3.9K
C111
330P
C105
0.0027
R122
1.8K
R802
2.2K
C815
47/16
BI803
R120 3.3K
C110
270P
C113
47/16
C802
0.022
C804
2P
(CH)
R811
22K
R5
3.3K
C6
330P
CF1
10.7MHz
C11 0.47/50
C15
10P
(CH)
R1 330
C12
4.7/50
C17 1/50
C19
0.01
(ML)
C16 1/50
C18 0.01(ML)
R9
10K
C10
1/50
C7
2.2/50
C9 0.1/50
C8
0.1/50
R4 2.2K
R8
10K
R820
47K
R83
3
3.3K
C841
0.047
C833
0.033(ML)
C838
0.047(ML)
R83
0
10
K
C839
0.047(ML)
R83
1
3.3
K
C835
470P
C834
470P
R827
15K
C836
0.047(ML)
C825
47/16
C826
47P
C837
0.047(ML)
R828
10K
C829
0.004
7
C828
0.0027
C830
0.01(
M
C123
220/10
C822
0.047
Q801
KTA1266 GR
SWITCHING
C818
56P
C821
100/10
R803
82K
C117
10/16
IC101
BA3311L
9
8
7
6
5
4
3
2
1
C108
820P
R121
1.8K
C116
0.018(ML)
R801
22
C863
47/16
C842
0.047
C843
47/16
IC803
LA6541D
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
R804
68K
C819
0.1(ML)
R117
3.9K
R113
8.2K
C820
0.1(ML)
R806
2.7K
R805
39K R807
1K
L301
BIASOSC.
C351
0.0022
(ML)
R
1
C121 0.01
C120 47/16
C119 2.2/50
R125
680K
C112
330P
R101
150
R118
3.9K
R351
100
C
3
0.
C352
100/10
R119
3.3K
R104
12K R103
12K
C801
0.01
SW102-A SW102-F
SW102-E
SW102-B
SW102-C
SW102-H
SW102-G
SW102-D
NC
NC
NC
NC
NC
CNS101
FM
AM
4
3
R-CH
L-CH
TRO
FOO
DMO
FMO
VCC
VREF
CD
RES
REG IN REG OUT
VIN4
VIN3
VIN2 GND GND GND
GND GND GND
VG4
VG3
VG2
VO4-
VO4+
VO3-
VO3+
VO2+ VO2- VO1- VO1+ VG1 VIN1
MT
VCC
AM OSC.
FM ANT
ST LED
TUN LED
AM RF
IN FM RF
OUT
RF GND
L3
AM BAR ANTENNA
LPF1
AM/FM
LPF2
VCO
GND
AM IF IN
FM IF IN
AM AGC
AM LOW CUT
CNS802
CNS801
CNS803
R-CH(CD) L-CH(CD)
RF
VCC
FM
OSC
AM
OSC
VCC
FM
AFC
DET
MPX IN
CNP803
FM ROD
ANTENNA
ALC T
FILTER
VCC
GND
NF1
NF2
IN2
IN1
OUT2
OUT1
R
P
R
R
P
R
P
P
P
R
R
R
R
L-CH
R-CH
PRE AMP
ERASE HEAD
TAPE
AM
FM
CD
CD
TAPE
FM OSC.
AM ANT
FM OSC.
AM IF
L-CH
R-CH
FM RF IN
MIX OUT
FM DET
P
+
+
-
-
SP+
SP-
SL+
SL-
PU-IN
LD
K
E
E
K
LD
VR
PD
G
B
B
A
F
F
C
TR+
TR-
FO+
FO-
R-
R+
F+
F-
2200P
2200P
PICK-UP UNIT
CD MOTOR PWB-B
M701
SLED
MOTOR
M702
SPINDLE
MOTOR
FC-
FC+
TR-
TR+
GND
PD
VR
LD
GND
K
F
B
E
A
VCC
FNI
FPI
TPI
TNI
MDI
LDO
SEL
TEB
2VRO
TEN
TEO
RFN
GND
RFO
AGCI
RFGC
RFGO
RFIS
RFRP
VRO
FEN
FEO
SBAD
MON
1M
1M
SLT-
SLT+
FM-
FM+
DM-
DM+
6
43
2
1
13
17
16
15
14
12
8
9
10
11
2
13
16
2
4
5
3
16 17 18
4
4
5
654
1
5
4
3
2
6
5
5
6
7
8
1
2
3
4
987
321
2
1
3
4
3
2
1
2
1
3
2
M
3
1
19 20 21
5
1
2
3
4
4
3
2
1
M
1
4
63 2
1
1
2
3
22 23 24
2
3
4
5
6
1
5
1
2
3
4
2
8
7
6
4
13 14 15
12 11 10
2
5
6
7
8
3
4
5
6
1
2
SW702
PICKUP IN
A
NC
NC
NC
NC
NC
NC
1
23
L1
FM IF
16
17
18
19
20
212223
24
25
2627282930
1 2 3 10 11 12
13
14
15
16
17
18
1920
21222324
11 12
10
P
P
NC
VC1 VC2
VC4
TC3 TC4
TC2
TC1
NC
NC
NC
IC801
SERVOPRE AMP.
TA2109F
IC803
FOCUS/
TRACKING/
SPIN/
SLED DRIVER
LA6541D
IC1
FM/AMIF MPX.
TA2111N
FM IF
AM IF
SW102
RECORD/PLAYBACK
SW102
RECORD/
PLAYBACK
IC101
REC./
P.B.EQUALIZER AMP.
BA3311L
SW201
FUNCTION
SELECTOR
MAIN PWB-A1
RECORD/
PLAYBACK HEAD
TAPE SW102
RECORD/
PLAYBACK
S
W
R
P
L
FM DETECTION
9
8
7
6
5
4
3
2
1
12
11
10
PIN
NO. VOLTAGEIC1
0.82V(0V)
0V(0V)
0.35V(1.03V)
3.81V(3.82V)
0V(0.13V)
3.92V(3.86V)
3.39V(3.18V)
3.92V(3.86V)
0V(0V)
0V(0.14V)
0.32V(0.32V)
3.14V(3.29V)
21
20
19
18
17
16
15
14
13
24
23
22
PIN
NO. VOLTAGE
1.22V(1.22V)
1.22V(1.22V)
3.20V(3.14V)
3.14V(3.92V)
0.7V(0.70V)
1.08V(1.01V)
0.4V(1.02V)
3.92V(3.85V)
3.92V(3.86V)
3.92V(3.86V)
3.92V(3.86V)
3.92V(3.82V)
( ): AM
9
8
7
6
5
4
3
2
1
12
11
10
PIN
NO. VOLTAGE
IC801
4.84V
2.04V
2.04V
2.12V(0V)
2.11V(0V)
0.18V(0V)
2.84V(0V)
2.41V(0V)
2.05V
4.08V
2.05V
2.08V
21
20
19
18
17
16
15
14
13
24
23
22
PIN
NO. VOLTAGE
2.86V(0.99V)
2.12V
2.05V
2.05V
2.63V(1.15V)
2.04V
2.07V
2.17V
2.04V
1.47V(0.77V)
0V
2.05V
( ): CD STOP
9
8
7
6
5
4
3
2
1
15
11
10
PIN
NO. VOLTAGE
IC803
8.15V
1.08V
2.12V
2.10V
4.0V
3.42V
0V
0V
0V
3.85V
3.60V
2.09V
2.09V
6.02V
7.47V
24
23
22
21
20
19
18
17
16
30
26
25
PIN
NO. VOLTAGE
0V
0.24V
2.13V
2.09V
4.03V
3.38V
0V
0V
0V
3.70V
3.71V
2.09V
2.11V
2.10V
8.14V
13
12
14 28
27
29
3.72V
(5.0V)
( ): CD STOP
1.87V
(1.45V)
2.97V
(4.39V)
( ): CD STOP
8.21V
(8.3V)
8.15V
(8.3V)
7.48V
(7.59V)
0V
(0V)
0V
(0V) 4.97V(5.0V)
1.88V
0V
0.6V
0V
0V
0V 0V
4.67V
0V 4.62V
0.6V 1.89V
VOLTAGE:
PLAYandREC
AM
TRACKING fH
fL TC3
L3
AM BAND
COVERAGE fH
fL TC4
L4
FM BAND
COVERAGE fH
fL TC2
L2
FM
TRACKING fH
fL TC1
L1
SW102
RECORD/
PLAYBACK
SW102
RECORD/
PLAYBACK
+
B
+B
+B
+B
+B
+B
2
3
8
9
10
C5
2P(CH)
L107
CHOKE
COIL
L108
CHOKE
COIL

QT-CD210H/W
– 13 –
Figure 13 SCHEMATIC DIAGRAM (2/2)
78 9101112
• NOTES ON SCHEMATIC DIAGRAM can be found on page 16.
C216
0.039(ML)
C215
0.039(ML)
C220
0.047(ML)
C241
47/16
C219
0.047(ML)
C832
47/16
C238
100/10
C237
100/10
D201
1N4148 C651
0.022
R232
120
C236 100/10
R231
120
C235
100/10
R216
2.2K
R215
2.2K
C226
0.022
R860
100
R835
270
R836
270
R837
10K
R838
10K
C851
3.3/50
C849
0.0022
C847 22/16
C848 22/16
C853 0.022
C844
100/10
L801
0.82µH
D801
1N4004
LCD801
LCD DISPLAY
8
7
6
5
4
321
FW806
R848
2.2K
SW804
CUE/UP
SW803
REVIEW/
DOWN
SW802
STOP
SW801
PLAY/
PAUSE
R849
6.8K
R847
1K
Q
803
K
RC107 M
S
WITCHING
C240
0.1
C239
0.1
C225
100/10
IC201
TA8227P
POWER
AMP.
12
11
10
9
8
7
6
5
4
3
2
1
R222
1K
C222
0.001
C221
0.001
R221
1K
C218
0.0039
VR201-A
20K(B)
C217
0.0039
R219
1K
R220
2.7K
R843
3.3K
C204
0.022
D203
1N4148
Q204
KTA1046 Y
REGULATOR
Q205 KTC3199 GR
C203
0.01
D202 1N4148
R201
2.2K
R202
4.7K
ZD201 DZ5.1BSB
R203
560 C202
47/16
SW201-A
D651 1N4004
SW201
FUNCTION
SELECTOR
SW201-C
SW201-B
C652
0.022
C824
0.022
C855
0.022
C653 0.022
D652 1N4004
CNS602
CNP602
C854
0.0068
R456
15K
R455
15K
R457
1K
R458
1K
CNP201
C233
1000/10
C234
1000/10
R820
47K
C840
0.047
C823
0.022
X801
16.93MHz
R833
3.3K
R821
22K
C833
0.033(ML)
R834
3.3K
C838
0.047(ML)
R812
1K
80
79
78
77
76
75
74
73
72
71
70
69
68
67
66
65
64
63
62
61
60
59
58
57
56
55
54
53
52
51
50
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
C846
10/16
R829
3.3K
R830
10K
C839
0.047(ML)
R861
3.3K
R831
3.3K
C835
470P
C834
470P
R844
3.3K
R827
15K C827
0.015(ML)
R832
3.3K
C836
0.047(ML)
R862
22K
C845
0.047
R824
10K
C825
47/16
C826
47P
C837
0.047(ML)
R828
10K
C829
0.0047
C828
0.0027
C830
0.01(ML)
R839
47K
R840
10
C227
3300/16
Q351
KTC3199GR
L301
BIASOSC.
R354
4.7
C353
0.0056(ML)
C351
0.0022
(ML) R352
150
R353
33K
R351
100
C354
0.022(ML)
C352
100/10
SW102-D
SO651
AC INPUT
SOCKET
T651
POWER
TRANSFORMER
FM
AM
BATTERY
DC 9V ["D" size (UM/SUM-1,R20 orHP-2)
battery x 6]
R-CH
L-CH
POWER PWB-A3
NC
SP202
SP201
R-CH(CD) L-CH(CD)
GND(AUDIO)
GND(POWER)
GND(CD)
SPEAKERS
L-CH
R-CH
4 OHM
4 OHM
+5V(CD)
SELECTOR
-
+
SW601
TAPE
MAIN
M601
TAPE
MOTOR
TAPE
AM
FM
CD CD
FM
AM
TAPE
AC/DC
AC INPUT
-
-
+
+
R
TAPE
AM
FM
CD
CD
TAPE
PUSEL2
DISPLAY
TRAY CLOSE
MVSS1
MVDD1
CDSEL0
SEG1
COM1
MVDD
MVSS
MXI
MXO
REMO-IN
RYNCREC RESET
DVSL
LO
DVRL
DVDD
DVRR
RO
DVSR
TEST0
SPCK
SPDA
COFS
DOUT
SBSY
SBOK
VDD1
VSS1
P2VREF
PDO
TMAX
LPFN
LPFO
PVREF
VCOF
AVSS
SLCO
RFI
AVDD
RFCT
RFZI
RFRP
FEI
SBAD
TEI
TEZI
FOO
TRO
VREF
RFGC
TEBC
FMO
DMO
2VREF
SEL
VDD2
VSS2
XI
XO
XVDD SEG2
SEG3
SEG4
SEG5
SEG6
SEG7
SEG8
SEG9
SEG10
SEG11
SEG12
SEG13
SEG14
DOOR IN
DOOR OUT
ADIN1
ADIN2
MUTE
PU IN
TEST1 TEST2 TEST3 TEST4 TEST5
/HSO
CDSEL1
TRAY OPEN
PUSEL0
PUSEL1
XVSS
COM2
COM3
COM4
NC
CD CONTROL PWB-A2
1 1
10
CNS201
1
2
3
4
5
19
23
22
21
20
13
17
16
15
14
12
8
9
10
11
M
1
2
2
1
1
2
3
1
2
3
3
21
4
63 2
1
12 11 10
10
R826
220K
R846
330
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
49 48 47 46 45 44 43 42 41 40 38 37 36 35 34 33 32 31
39
NC NC
NC
81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99
100
C850
0.0022
C852
3.3/50
3
VR201-B
20K(B)
C654
0.022
D654 1N4004
D653 1N4004
P
NC
NC
IC802
SERVO/
SIGNAL CONTROL
TC9457F0
A
LIZERAMP.
SW201
FUNCTION
SELECTOR
SW201-D
SW201
FUNCTION
SELECTOR
+
+
-
-
RECORD SIGNAL
PLAYBACK SIGNAL
CD SIGNAL
FM SIGNAL
AM SIGNAL
VOLUME
VOLUME
SW102
RECORD/
PLAYBACK
SW810
CD LID
OPEN/CLOSE
9.05V
5.08V
8.44V
4.39V
8.44V
4.96V
2.49V
2.49V
2.49V
2.49V
2.49V
2.49V
2.49V
2.49V
2.49V
2.49V
2.49V
2.49V
2.49V
2.49V
0V
0V
0V
0V
4.98V
0V
0V
0V
0V
4.98V
0V
4.98V
4.98V
0V
4.97V
0V
0V
0V
0V
0V
0V
0V
0V
0V
4.97V
2.49V
0.43V(2.36V)
( ):STOP
1.66V
2.46V
0V
4.97V(0V)
4.98V
0V
4.18V
2.10V
2.08V
(0V)
2.10V(1.34V)
51
2.01V(4.12V)
52
2.10V
53
1.50V
0V
2.10V
2.10V
4.98V
2.10V
2.10V
2.73V(1.15V)
2.30V(2.1V)
2.94V(0.989V)
2.14V
2.14V
2.18V
2.11V
2.10V
2.14V
2.10V
2.10V
2.17V
4.18V
2.47V(0V)
4.97V
0V
0V
2.08V
2.57V
4.92V
0V
2.48V
2.37V
4.72V
2.36V
2.47V
0V
0V
0V
4.95V
0V
4.96V
4.96V
0.30V
0V
4.96V
2.33V
2.33V
2.33V
2.33V
D
STOP
V
)
4.97V(5.0V)
0V
3.32V
0.68V
8.35V
4.27V
8.01V
0V
0V
0.56V
0V
0V
0.56V
4.67V
0V
8.02V
4.33V
9.05V
13
14
+B
+B
+B +B
+B
+B
+B
+B
+B
+B
+B
+B
+B
+B
+B
+B
4
5
1
7
6
14 15
11
17 16
RECORDING
BIASOSCILATOR
SWITCHING
SW651
VOLTAGE
SELECTOR
AC220-240V
AC110-127V
HPJ201
HEADPHONE
R227
120
R228
120
SO651
AC INPUT SOCKET
AC110V-127V/220V-240V,50/60Hz
T651
POWER
TRANSFORMER
SELECTORAC/DC
AC INPUT
FOR QT-CD210W
For U.K./Europe/Australia/New Zealand/
Thailand; AC230-240V,50Hz
For Philippines; AC220V,60Hz
FOR QT-CD210H
F651
T1.25A L
250V
12
13
NC NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC NC NC
NC
NC NC
NC
NC
NC NC

QT-CD210H/W
– 14 –
Figure 14 WIRING OF P.W.BOARD (1/2)
A
B
C
D
E
F
G
H
1234 5 6
• The numbers 1 to 17 are waveform numbers shown in page 17.
OPEN/CLOSE
SW810
CD LID
BK
BK
FW806
11
10 10
3 2 1 YL
RD
BK
1 2 3
C
A
E
B
H
D
G
F
VC4
TC4
VC3
TC3
VC2
TC2
VC1
TC1
R860
C843 R824
IC201
IC803
L2
IC802
IC801
C105
R105
R104
R103
R101
L107
L108
C107
C108
R102
CNP101
C115
C113 C109
R109
C112 R110 C110
C114
C111
R113
R115
D101
R117
C121
C120
R125 C117
D102
IC101
R119
R124
R123 R121
C123
C122
R126
C216
R220
C218
CNP201
C202
ZD201
C203
D203
D202
R203
R221
R222
R216
VR201
R215
C217
R219
R458
R457
C215
R455
R456
R837
C851
R835
C849
C848
C852
R838
L801
R839
R836
C844
C855
C853
C846
C847
C850
R862
R844
C824
R846
R861
C21
C3
C2
L1
F1
R4
D2
C22
R7
R6
C11
C1
T3
BI803
R851
C825
R843 C842
R821
C823
R826
C827
R827
C826
R820
C841
C830
C838
R852 C829
C828
C863
R828
C833
R834
R833
R831
R830
R829
R832
R840
C840
X801
C845
C832
R812
C837
C836
C854
C821
C822
C818
R807
C820
C819
C222
C220
C221
C219
R231
C225
C235
R232
C236
C238
C234
C240
C226
D201
C237
C204
Q205
R202
Q204
R201
C239
C233
C227
R122
R120
C119
C118
R118 R116
R114
C116
C106
R106
R354
Q351
R353
C353
L301
C351
R351
C352
C354
R352
CNP602
Q803
R850
Q802
D801
C813
C814
R811
R803
BI802 BK
WH
WH
WH
WH
BK
WH
WH
WH
WH
WH
WH
WH
BI801
R802
C802
C801
C816
R805
R806
C804
R804
C815
C817
R801
Q801
R853
C839
C835
C834
C805
C807
C806
SW803
REVIEW/DOWN
C856
R11
R8
R9
C16
C17
R10
COR1
T2
C13
C15
C20
C18
C19
C14
R3 C12
CF1
R1
CF3
IC1
C4
D1
C10
R5 C9
C8
C7
C6
R2
L4
SW802
STOP
R847
R848
LCD801
R849
SW801
PLAY/
PAUSE SW804
CUE/UP
CNS802
CNS801
1234
1
2
3
4
5
8
7
6
5
4
3
2
1
1
1
5
8
16
SW102
RECORD/
PLAYBACK
12
13 5 7 9 11
24 6 810
ECB
2
1
3
14
4
5
6
12
11
10
13
9
8
7
E
C
B
B
C
E
VOLUME
VR201-B
VR201-A
A
BC
D
SW201
FUNCTION
SELECTOR
CD
POWER
TAPE
OFF ON
FM
AM
1510
1520
25
30 31
354045 50
51
55
60
65
70
75
80
81
85
90
95
100
1
B
1E
C2
3
1
5
10
12
13 15
20
24
BCE
5
10
15 16
20
25
30
1
2
3
123
123
1510
12
13
15
2024
PLAY REC.
SW201
C5
SPEAKERS
SP201 SP202
R-CHL-CH
CNS201
WH
BK
RD
MAIN PWB-A1
CD CONTROL
PWB-A2
L3 AM BAR ANTENNA
WH GY GY GY GY GY
1 2
1
2
3
4
5
6
7
8
2
3
12
13
8
10
4
5
1
6
14
15
11
16
17
7
C241
9
HPJ201
HEADPHONE
R227
R228

QT-CD210H/W
– 15 –
Figure 15 WIRING OF P.W.BOARD (2/2)
78 9101112
F3895AF
D651
D654
D652
D653
C654
C651
C652 C653
WH
GY
GY
GY
GY
GY
CNS803
1
2
3
4
5
6
CNS602
FM ROD ANTENNA(237)
BK
BK RD WH
RECORD/PLAYBACK
HEAD(240-4)
ERASE HEAD
(240-5)
TAPE
BK
CNS101
BK
WH
RD
BK
1
2
3
4
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
T651
POWER
TRANSFORMER
(229)
(230)
BATTERYS
DC9 V [ "D" size(UM/SUM-1,
R20 or HP2) battery x 6 ]
YL
TAPE MOTOR
(240-6)
M601
TAPE MAIN
(240-7)
SW601
1
+
+
-
SW702
PICKUP IN
M702
SPENDLE MOTOR
M701
SLED MOTOR
CNP803
1
2
3
4
5
6
54321
78 654321
PICK UP UNIT
CD MOTOR PWB-B
POWER PWB-A3
RD
BK
BR
BK
RD
BR
YL
YL
RD
OR
OR
SO651
AC INPUT
SOCKET
2
-
(233)
F651
T1.25A L 250V
SW651
VOLTAGE SELECTOR
AC220V-240V AC110V-127V
QT-CD210W ONLY
QT-CD210H
For U.K./Europe/Australia/
New Zealand/Thailand;
AC230-240V,50Hz
For Philippines;
AC220V,60Hz
QT-CD210W
AC110-127V/
AC220-240V,
50/60Hz
RD OR
BL
RD
RD
OR

QT-CD210H/W
– 16 –
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
•Theindicatedvoltage in each section istheonemeasuredby
Digital Multimeter between such a section and the chassis
with no signal given.
SW102 RECODE/PLAYBACK REC—P.B.
SW201 FUNCTION SELECTOR TAPE/OFF—AM/ON—
FM/ON—CD/ON
SW601 TAPE MAIN OFF—ON
SW651 VOLTAGE SELECTOR AC220-240V—
(QT-CD210W ONLY) AC110-127V
SW702 PICKUP IN OFF—ON
SW801 PLAY/PAUSE OFF—ON
SW802 STOP OFF—ON
SW803 REVIEW/DOWN OFF—ON
SW804 CUE/UP OFF—ON
SW810 CD LID OFF—ON
REF. NO DESCRIPTION POSITION
Figure 16 TYPES OF TRANSISTOR
ECB
(S)(G)(D)
(1) (2) (3)
FRONT
VIEW
KRC107 M
KTA1046 Y
KTA1266 GR
KTA1273 Y
KTC3199 GR

QT-CD210H/W
– 17 –
WAVEFORMS OF CD CIRCUIT
NO DISC FOCUS SEARCH STOP PLAY
FOO 1 TMAX 1
FO+ 2 SBOK 2
FO- 3 DMO 3
FOCUS SEARCH TOC IL STOP PLAY
SEL 1 TEI 1
FEI 2 TRO 2
TEI 3 FMO 3
STOP PLAY CUE
FEI 1 TEI 1
SBAD 2 TRO 2
RFO 3 FMO 3
STOP PLAY REVIEW
FEI 1 TEI 1
RFGO 2 TRO 2
RFRP 3 FMO 3
STOP PLAY TCD-782 TNO-02 PLAYBACK
TEI 1LO 1
TRO 2
RO 2
SBAD 3
1
2
3
4
6
7
11
15
16
17
5
6
5
7
8
5
9
10
6
11
12
13
14
6
11
15
6
11
15
IC802 66pin
IC803 20pin IC802 45pin
IC803 21pin IC802 72pin
IC802 74pin
IC802 62pin IC802 67pin
IC802 64pin IC802 71pin
IC802 62pin
IC802 63pin IC802 67pin
IC801 22pin IC802 71pin
IC802 62pin
IC801 19pin IC802 67pin
IC801 17pin IC802 71pin
IC802 64pin
IC802 67pin
IC802 63pin
IC802 86pin
IC802 64pin
IC802 64pin
IC802 64pin
IC802 50pin
IC802 82pin

QT-CD210H/W
– 18 –
TROUBLESHOOTING (CD SECTION)
HOW TO USE
1. Using the brush in the cleaner cap, apply 1 or 2 drops of the cleaning fluid to the brush on the CD cleaner disc which has
the mark next to it.
2. Place the CD cleaner disc onto the CD disc tray with the brush side down, then press the play button.
3.Youwillhearmusicforabout20secondsandtheCDplayerwillautomaticallystop.Ifitcontinuestoturn,pressthestopbutton.
CAUTION
TheCD lenscleanershould beeffectivefor 30-50operations,howeverifthebrushes becomewornout earlierthenplease
replace the cleaner disc.
If the CD cleaner brushes become very wet then wipe off any excess fluid with a soft cloth.
Do not drink the cleaner fluid or allow it to come in contact with the eyes. In the event of this happening then drink and / or
rinse with clean water and seek medical advice.
The CD cleaner disc must not be used on car CD player or on computer CD ROM drives.
All rights reserved. Unauthorized duplicating, broadcasting and renting product is prohibited by law.
Cleaning Disc
PARTS CODE:
UDSKA0004AFZZ
Cleaner Liquid
Figure 18
When the CD does not function
When the CD section does not operate when the objective lens of the optical pickup is dirty, this section may not operate. Clean
theobjective lens,andchecktheplaybackoperation.When thissectiondoesnotoperateevenafter theabovestepistaken,check
the following items.
Remove the cabinet and follow the troubleshooting instructions.
"Track skipping and/or no TOC (Table Of Contents) may be caused by build up of dust other foreign matter on the laser pickup
lens. Before attempting any adjustment make certain that the lens is clean. If not, clean it as mentioned below."
Turn the power off.
Gently clean the lens with a lens cleaning tissue and a small amount of isopropyl alcohol.
Do not touch the lens with the bare hand.
Dust gradually accumulates on the objective lens during use, and it may degrade performance.
To avoid this problem, use a cleaning disc designed for CD optical pickup lenses.
Check the pickup-in switch (SW702) position.
Check the Focus system.
Yes
• The CD function will not work.
The CD operating keys don't work.
Check the power supply, 16.93 MHz clock, and reset terminal.
Yes
Yes

QT-CD210H/W
– 19 –
• Laser failure.
Yes No Check the laser come on when pattern cut between pin 8 (SEL) of
IC801 and pin 74 (SEL) of IC802.
Yes No Check the peripheral parts of IC801 and Q801. If it is normal, the
optical pickup is faulty.
Check BI801/CNS801. If it is normal, the optical pickup is
faulty.
Is approx. 1.8V applied to the collector of Q801.
• Focus failure.
Does the optical pickup move up and down when the disc is
removed?
Is the following waveform ouput at the pin 62 (FEI) of IC802
when the disc is set?
Is the waveform shown above input at the pin 63 (SBAD) of
IC802?
Yes
Yes
No
No
The optical pickup is faulty.
Check as stated in item "FOCUS SERVO SAWTOOTH WAVE
FAILURE".
Yes
Check the periphery of IC801 and BI801/CNS801. Is it normal?
No Check the pattern between pin 13 of IC801 and pin 63 of IC802.
Check the periphery of IC801 and BI801/CNS801.
IC801 is faulty.
Yes
Is +5V applied to the emiter of Q204 ?
Is +5V applied to the collector of Q204 ?
Yes No
No
Check the PWB pattern of Q204.
Check the peripheral parts of IC803 and Q204.
Is +5V applied to the pin 75 (VDD) of IC802 ?
Is +5V applied to the pin 1 (VCC) of IC801 ?
Yes No
No
Check the PWB pattern between collector of Q204 and pin 75 of
IC802.
Check the PWB pattern between collector of Q204 and pin 1 of
IC801.
pin 62
(FEI)
pin 86
(FOO)
pin 63
(SBAD)
Yes
Yes
Is +0V applied to the pin 74 (SEL) of IC802 ?

QT-CD210H/W
– 20 –
• Focus servo sawtooth wave failure.
Is +8.1V applied to the pins 1 and 30 (VCC) of IC803 ?
Is sawtooh wave output to the pin 66 (FOO) of IC802 ? IC802 is faulty.
No
Yes
Yes
Is sawtooth wave obtained between pins 20 and 21 of IC803 ? No Check the PWB pattern of IC803.
Check the PWB pattern of IC803.
No
Is sawtooth wave obtained between pins 3 and 4 of BI801/
CNS801 ? (as shown above)
Yes
Check the PWB pattern between BI801/CNS801 and IC803.
No
BI801/CNS801 connection failure or optical pickup failure.
Yes
• Spindle motor clv servo failure.
Is above wave obtained between pins 5 and 6 of IC803 ?
Is following wave output to the pin 55 (DMO) of IC802 when
the Function is changed to "PLAY" from "STOP" ? No
Yes
Check the procedure in "HF ERROR".
If OK. IC802 is faulty.
Check the PWB pattern between pin 72 (DMO) of IC802 and pins
5 and 6 of IC803. If OK. IC803 is faulty.
No
Is above wave obtained between pins 5 and 6 of BI803/
CNS803 ?
Yes
Check the PWB pattern between BI803/CNS803 and IC803.
No
BI803/CNS803 connection failure or optical pickup failure.
Yes
DMO
1.5~2.5sec
1.5~2.5sec