Sharp QTCD-250-H, QTCD-250-W Service manual

Illustration: QT-CD250H

QT-CD250H/W

SERVICE MANUAL

No. S3017QTCD250H

QT-CD250H(S) QT-CD250W(S)

• In the interests of user-safety the set should be restored to its original condition and only parts identical to those specified should be used.

• 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.

CONTENTS

AC POWER SUPPLY CORD AND AC PLUG ADAPTOR (FOR QT-CD250W) ................................................................ 1

SAFETY PRECAUTION FOR SERVICE MANUAL ........................................................................................................... 2

IMPORTANT SERVICE NOTES (QT-CD250H FOR U.K. ONLY) .................................................................................... 3

VOLTAGE SELECTION (QT-CD250W ONLY).................................................................................................................. 3

SPECIFICATIONS ............................................................................................................................................................. 3

NAMES OF PARTS ........................................................................................................................................................... 4

OPERATION MANUAL ...................................................................................................................................................... 5

DISASSEMBLY.................................................................................................................................................................. 8

REMOVING AND REINSTALLING THE MAIN PARTS..................................................................................................... 8

ADJUSTMENT ................................................................................................................................................................. 10

SCHEMATIC DIAGRAM .................................................................................................................................................. 14

WIRING SIDE OF P.W.BOARD....................................................................................................................................... 16

NOTES ON SCHEMATIC DIAGRAM .............................................................................................................................. 18

TYPES OF TRANSISTOR ............................................................................................................................................... 18

WAVEFORMS OF CD CIRCUIT...................................................................................................................................... 19

TROUBLESHOOTING (CD SECTION) ........................................................................................................................... 20

FUNCTION TABLE OF IC................................................................................................................................................ 24

PARTS GUIDE/EXPLODED VIEW PACKING METHOD (QT-CD250H FOR U.K. ONLY)

AC POWER SUPPLY CORD AND AC PLUG ADAPTOR (FOR QT-CD250W)

QACCA0001SJ00

QPLGA0253AFZZ

Page

QACCB0001SJ00

QACCE0001SJZZ

QPLGA0250AFZZ

SHARP CORPORATION

– 1 –

This document has been published to be used for after sales service only. The contents are subject to change without notice.

QT-CD250H/W

SAFETY PRECAUTION FOR SERVICE MANUAL

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) The Laser Power Output of the Pickup inside the unit and replacement service parts have already been adjusted prior to shipping. (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.

VAROITUS! LAITTEEN KéYTTéMINEN MUULLA KUIN TéSSé KéYTTôOHJEESSA MAINITULLA TAVALLA SAATTAA ALTISTAA KéYTTéJéN TURVALLISUUSLUOKAN 1 YLITTéVéLLE NéKYMéTTôMéLLE 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.

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-CD250H for Europe

QT-CD250H for U.K.

Laser Diode Properties

LASER KLASSE 1 LUOKAN 1 LASERLAITE KLASS 1 LASERAPPARAT

CAUTION

● This Portable CD Stereo System is classified as a CLASS 1 LASER product.

● The CLASS 1 LASER PRODUCT label is located on the rear cover.

● Use of controls, adjustments or performance of 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.

Material: GaAIAs Wavelength: 780 nm Emission Duration: continuous Laser Output: max. 0.6 mW

QT-CD250H for Europe

Laser Diode Properties Material: GaAIAs Wav elength: 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-CD250H for Australia/New Zealand/Philippines/QT-CD250W

– 2 –

FOR A COMPLETE DESCRIPTION OF THE OPERATION OF THIS UNIT, PLEASE REFER TO THE OPERATION MANUAL.

IMPORTANT SERVICE NOTES (QT-CD250H FOR U.K. ONLY)

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.

QT-CD250H/W

Set name Withstanding Voltage Tester Test voltage

Set time Set current (Cutoff current) Unit Judgment

Set value

4,240 VPEAK 3,000 VRMS 6 secs 4 mA

WITHSTANDING

VOLTAGE TESTER

AC

OUT

SHORT-CIRCUT AC POWER SUPPLY CORD

PROBE

UNIT

CONNECT THE PROBE TO GND OF CHASSIS SCREW TERMINAL

OK: The “GOOD” lamp lights. NG: The “NG” lamp lights and the buzzor sounds.

VOLTAGE SELECTION (QT-CD250W 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.

SPECIFICATIONS

QT-CD250H/W

● General Power source:

(QT-CD250H for U.K./Europe)

Power source: (QT-CD250H for Australia/ New Zealand/ Philippines)

Power source: (QT-CD250W)

Power consumption: (QT-CD250H)

Power consumption: (QT-CD250W)

AC 230-240 V, 50 Hz DC 9 V ["D" size (UM/SUM-1, R20 or HP-2) battery × 6] DC 4.5 V ["AA" size (UM/SUM-3, R6 or HP-7) battery × 3 for backup memory]

● For customers in Australia and New Zealand; AC 230-240 V, 50 Hz

● For customers in Philippines; AC 220 V, 60 Hz DC 9 V ["D" size (UM/SUM-1, R20 or HP-2) battery × 6] DC 4.5 V ["AA" size (UM/SUM-3, R6 or HP-7) battery × 3 for backup memory]

AC 110-127/220-240 V, 50/60 Hz DC 9 V ["D" size (UM/SUM-1, R20 or HP-2) battery × 6] DC 4.5 V ["AA" size (UM/SUM-3, R6 or HP-7) battery × 3 for backup memory]

8 W

10 W

Output power: (QT-CD250H for Europe)

Output power: (QT-CD250H for U.K./Australia/ New Zealand/ Philippines/ OT-CD250W)

Speakers: 10 cm (4") full-range speaker

Output terminals: Dimensions: Width; 400 mm (15-3/4")

Weight: 2.7 kg (6.0 lbs.)

● Compact disc player

Type: Signal readout: Audio channels: Filter:

D/A converter: Wow and flutter:

RMS; 4.6 W (2.3 W + 2.3 W) (DC operation, DIN 45 324) 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, 10 % T.H.D.) MPO; 8.4 W (4.2 W + 4.2 W) (AC operation, 10 % T.H.D.)

x 2 Headphones; 16-50 ohms (recommended; 32 ohms)

Height; 158 mm (6-1/4") Depth; 212 mm (8-3/8")

without batteries

Compact disc Non-contact, 3-beam semiconductor laser pickup

2 8-times oversampling digital filter

1-bit D/A converter Unmeasurable (less than 0.001% W. peak)

● Radio Frequency

range: (QT-CD250H)

● Radio Frequency

range: (QT-CD250W)

● Tape recorder Frequency

response:

Signal/noise ratio:

Wow and flutter: (QT-CD250H for U.K./Australia/ New Zealand/ Philippines/ QT-CD250W)

Wow and flutter: (QT-CD250H for Europe)

Motor: DC 9 V electric governor Bias system: AC bias Erase system: Magnet erase

FM; 87.5 - 108 MHz AM; 522 - 1,620 kHz

FM; 88 - 108 MHz AM; 531 - 1,602 kHz

50 - 14,000 Hz (Normal tape)

50 dB

0.25 % (WRMS)

0.3 % (DIN 45 511)

Specifications for this model are subject to change without prior notice.

– 3 –

QT-CD250H/W

NAMES OF PARTS

Illustration: QT-CD250W

2345

1

10 11

12 13

18

19

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.

(CD) Stop Button

3

(TUNER) Tuning Down Button

11.

(CD) Repeat Button

3

(TUNER) Band Selector Button

12.

(TUNER) Preset Memory Button

13.

Extra Bass Button

14.

(CD) Play/Pause Button

3

(TUNER) Tuning Up Button

20

78

6

21 22

9

14 15

16

17

23

24

25

15.

(CD) Track Up/Cue Button

3

(TUNER) Preset Up Button

16.

(CD) Track Down/Review Button

3

(TUNER) Preset Down Button

17.

Volume Up/Down Buttons

18.

Stand-by, On/Function Switch

19.

(CD) Play Indicator

20.

(CD) Repeat Indicator

21.

(CD) Pause Indicator

22.

Extra Bass Indicator

23.

(TUNER) Memory Indicator

24.

(TUNER) FM Stereo Mode Indicator

25.

(TUNER) FM Stereo Indicator

26.

Battery Compartment

27.

FM Telescopic Rod Aerial

28.

Headphone Socket

29.

AC Power Input Socket

26

30

27

30.

31.

32.

33.

34.

35.

36.

37.

38.

39.

40.

32 33

34

28

29

35

VOLTAGE

SELECTOR

AC 220V - 240V

31

AC 110V - 127V

Backup Memory Battery

Compartment

Voltage Selector (QT-CD250W Only)

(CD) Play/Pause Button

3

(TUNER) Tuning Up Button (CD) Track Down/Review Button

3

(TUNER) Preset Down Button (CD) Stop Button

3

(TUNER) Tuning Down Button (CD) Repeat Button

3

(TUNER) Band Selector Button (TUNER) Memory Button (TUNER) Clear Button (CD) Track Up/Cue Button

3

(TUNER) Preset Up Button Extra Bass Button Volume Up/Down Buttons

36 37

38

39 40

REMOTE CONTROL

Remote sensor

15

0.2 m - 6 m (8" - 20')

Notes:

● 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.

– 4 –

1

●

6 “D” size batteries (UM/SUM-1, R20, HP-2

or similar)

●

Batteries are not included.

5

4

6

1

3

2

1

Preparation for use

■

Headphones

■

Volume control

■

Turning the power ON

and to STAND-BY

■

Battery power

TUNER

AC power lead x 1

● QT-CD250H for

customers in

Australia and

New Zealand

● QT-CD250H for

customers in

Philippines

● QT-CD250H for

customers in Europe

● QT-CD250H for

customers in U.K.

● For QT-CD250W

● For QT-CD250W ● For QT-CD250W

To an AC socket

(For Australia/New Zealand)

AC 230 - 240 V, 50 Hz

(For Philippines)

AC 220 V, 60 Hz

(For Europe)

AC 230 - 240 V, 50 Hz

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-CD250W)

■

AC power (For QT-CD250H)

To AC INPUT

(For U.K.)

AC 230 - 240 V, 50 Hz

To an AC socket

2

3

Listening to a tape

5

To stop playback

1

4

2

3

Label side up.

2

Listening to a CD

TUNER

TUNING

PLAY / PAUSE

TUNING

STOP

1

4

2

To stop playback

3

TUNER

OPERATION MANUAL

QT-CD250H/W

– 5 –

QT-CD250H/W

3

5

Recording from CDs

4

5

6

2

Label side up.

To stop recording

3

1

4

Listening to the radio

TUNING

PLAY / PAUSE

TUNER

■

Aerial adjustment

FM

AM

1

After use

2

TUNER

BAND

REPEAT

3

TUNING

PLAY / PAUSE

STOP

Tune in to the desired station.

4

6

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

4

To stop recording

6

8

1

5

●

7

2

BAND

REPEAT

3

TUNING

PLAY / PAUSE

STOP

Tune in to the desired station.

TUNER

– 6 –

FM/AM INTERVAL (SPAN) (For QT-CD250W Only)

y

Before using the unit, be sure to set it for the AM tuning interval (span) used in your area.

To check the tuning span currently selected:

1

Set the function switch to TUNER.

2

Press the REPEAT/BAND ( ) button to select the AM band.

● If “AM 531 kHz” is displayed, it means that the radio has been adjusted for a 9 kHz span. If “AM 530 kHz” is displayed, it means that the radio has been adjusted for a 10 kHz span.

T o change from a 9 kHz AM (50 kHz FM) interval to a 10 kHz AM (100 kHz FM) interval:

REPEAT BAND

1

Set the function switch to TUNER.

2

Hold down the TUNER MEMORY button and the PRESET button for at least 3 seconds. Release the buttons when “AM SP 9 kHz” and “FM SP 50 kHz” are displayed alternately.

QT-CD250H/W

TUNER MEMORY

[9 kHz ➞ 10 kHz]

[10 kHz ➞ 9 kHz]

The International Telecommunication Union (ITU) has established that member countries should maintain either a 10 kHz or a 9 kHz interval between broadcasting frequencies of any AM station. The illustration shows the 9 kHz interval zones (regions 1 and 3), and the 10 kHz interval zone (region 2). This product is not equipped with a span selector. However, it will be adjusted to 9 kHz AM interval (50 kHz FM interval) when shipped from the factor

.

ON/STAND-BY

(Function)

kHz

kHz kHz

kHz

kHz kHz

REVIEW PRESET

kHz

3

Press the REPEAT/BAND ( ) button to select the “AM SP 10 kHz” and “FM SP 100 kHz” are displayed alternately.

4

Press the TUNER MEMORY button to set it.

● The unit will return back to the normal frequency display .

To return to a 9 kHz AM (50 kHz FM) interval:

1

Set the function switch to TUNER.

2

Hold down the TUNER MEMORY button and the PRESET button for at least 3 seconds. Release the buttons when “AM SP 10 kHz” and “FM SP 100 kHz” are displayed alternately.

3

Press the REPEAT/BAND ( ) button to select the “AM SP 9 kHz” and “FM SP 50 kHz” are displayed alternately.

4

Press the TUNER MEMORY button to set it.

● The unit will return back to the normal frequency display .

Notes:

● If the backup memory batteries are not inserted and the power is disconnected, it will be automatically returned to a 9 kHz span. If this happens, insert the backup memory batteries first and set the span again.

● When the span is switched, any stations that are memorised will be cancelled.

– 7 –

QT-CD250H/W

DISASSEMBLY

Caution on Disassembly

Follow the below-mentioned notes when disassembling the unit and reassembling it, to keep it safe and ensure excellent performance:

1. Take cassette tape 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

1 Top Cabinet/ 1. Screw ................... (A1) x7 8-1

Front Cabinet 2. Socket .................. (A2) x1

2 Power PWB/ 1. Screw ................... (B1) x2 8-2

Terminal PWB 2. Hook..................... (B2) x2

3 Switch PWB 1. Screw ...................(C1) x2 8-2

4 Main PWB/ 1. Socket ..................(D1) x1 8-2

CD Control PWB 2. Screw ................... (D2) x7

(Note) 3. Screw ...................(D3) x1

5 CD Mechanism 1. Screw ................... (E1) x3 8-3

6 Tape Mechanism 1. Screw ................... (F1) x4 8-3

Top Cabinet

3. Screw ................... (A3) x1

3. Socket .................. (B3) x1

4. Hook..................... (B4) x2

2. Socket ..................(C2) x1

3. Hook..................... (C3) x2

4. Screw ...................(C4) x4

4. Solder................... (D4) x3

5. Socket ..................(D5) x3 8-3

6. Screw ...................(D6) x6

7. Hook..................... (D7) x2

SP202

R-CH

SW651 (Voltage Selector) QT-CD250W Only

Terminal PWB

Switch PWB

Power Transformer

(B4)x2

(B2)x2

Power PWB

Power Transformer

(E1)x3 ø2.5x10mm

(C3)x2

(D2)x7 ø3x12mm

Main PWB

Washer

(D5)x1

(C4)x4 ø3x10mm

(C2)x1

(B1)x2 ø3x12mm

Figure 8-2

CD Mechanism

(C1)x2 ø3x12mm

AC Socket

(D5)x2

Tape Mechanism

(D3)x1 ø2.5x8mm

(B3)x1

Top Cabinet

(F1)x4 ø3x10mm

CD Lid Switch

(D1)x1

(D4)x3

(A3)x1 ø3x10mm

Front Cabinet

(A1)x4 ø3x12mm

(A1)x3 ø3x12mm

Main PWB

(A2)x1

REMOVING AND REINSTALLING THE MAIN PARTS

CD MECHANISM SECTION

Perform steps 1 to 5 of the disassembly method to remove the 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.

Note : (Figure 8-3 and Figure 8-4)

After removing the connector for the optical pickup from the

connector, wrap the conductive aluminium foil around the front end of connector to protect the optical pickup from electrostatic damage.

(D6)x6 ø3x8mm

ø2.6 x6mm

Shaft (A2) x1

(D7)x2

(A1) x2

Pickup

CD Control PWB

Figure 8-3Figure 8-1

Gear (A4) x1

Figure 8-4

Top Cabinet

CD Mechanism

Stop Washer (A3) x1

– 8 –

QT-CD250H/W

TAPE MECHANISM SECTION

Perform steps 1 to 6 of the disassembly method to remove the 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 the hooks (A2) x 2 pcs., toward the center position

as shown in Fig. 9-1. 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) upwards.

Hook (A2)x2

Erase Head

Pinch Roller (B1)x1

(A1) x1 ø2x7mm

(A1) x1 ø2x3mm

Record/Playback Head

Figure 9-1

<A>

Pinch Roller Pawl

Figure 9-2

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:

When putting on the belt, ascertain that the belt is not twisted, and clean it.

How to remove the motor (See Figs. 9-4.)

1. Remove the mainbelt.

2. Remove the screw (D1) x 1 pc., to remove the motor mount.

3. Remove the screws (D2) x 2 pcs., to remove the motor.

Note:

When mounting the motor, pay attention to the motor mounting angle.

How to remove the flywheel (See Fig. 9-5.)

1. Remove the belt.

2. Remove the stop washer (E1) x 1 pc., with a small precision

screwdriver to extract the flywheel from the capstan metal.

Note:

When the stop washer is deformed or damaged, replace it with a new one.

Flywheel

FF/REW Belt (C2)x1

Motor

Motor Mount

(E1) x 1 Stop Washer

Main Belt (C1)x1

Washer

Flywheel

Figure 9-3

(D2)x2 Special Screw

(D1)x1 Special Screw

Figure 9-4

Motor

REW/FF Clutch Ass'y

Motor Mount

Motor

How to reinstall the parts

Install each part in the reverse order of the removal with care.

Figure 9-5

– 9 –

QT-CD250H/W

ADJUSTMENT

MECHANISM SECTION

• Driving Force Check

Torque Meter

PLAY: TW-2412 Over 120 g

• Torque Check

Torque Meter

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

• Head Azimuth

Torque Meter

MTT-114 Output: Speaker Terminal

(CNP201 Load resistance: 4 ohms)

• Tape Speed

Test

Tape

Adjusting

Point

MTT-111 Variable 3,000 ± 90 Hz Output: Speaker

resistor in Teaminal motor. (M601) (CNP201 Load

Specified

TAPE SECTION

Position of each switch or control

Volume control Max Function switch Tape/Power Off X-BASS On

• Bias Oscillation

Adjustment Point

L301 82 kHz ± 6 kHz Pin 2 of CNP201

Specified Value

- 6 kHz

Specified Value

Value

Instrument

Connection

resistance: 4 ohms)

Instrument

Connection

• AM IF/RF (For QT-CD250H)

Signal generator: 400 Hz, 30%, AM modulated

Test Stage

Frequency Frequency

Display

AM IF 450 kHz 1,620 kHz T3 *1 AM Band — 522 kHz (fL): L4 *3

Coverage 1.0 ±0.05V AM Tracking 600 kHz 603 kHz (fL): L3 *2

1,400 kHz 1,404 kHz (fH): TC1

Setting/

Adjusting

Parts

• AM IF/RF (For QT-CD250W)

Signal generator: 400 Hz, 30%, AM modulated

Test Stage

Frequency

AM IF 450 kHz 1,602 kHz T3 *1

AM Band — 531 kHz (fL): L4 *3 Coverage (9kHz span) 1.0 ±0.05V

AM Band — 530 kHz (fL): L4 *3 Coverage (10kHz span) 1.0 ±0.05V

AM Tracking 603 kHz 603 kHz (fL): L3 *2 (9kHz span) 1,404 kHz 1,404 kHz (fH): TC1

AM Tracking 600 kHz 600 kHz (fL): L3 *2 (10kHz span)

1,400 kHz 1,400 kHz (fH): TC1

Frequency

Display

(9kHz span) 1,620 kHz (10kHz span)

Setting/

Adjusting

Parts

*1. Input: Antenna, Output: Pin 16 of IC1 *2. Input: Antenna, Output: Speaker Terminal

*3. Input: Input is not connected, Output: TP1

CNP101

2

1

3

BIAS OSC.

L301

4

SW102

Instrument

Connection

Instrument

Connection

• Playback Amplifier Sensitivity Check

Test Tape

Specified Value

MTT-118 1.1 V ± 3 dB Speaker Terminal

Instrument Connection

(Load resistance: 4 ohms)

TUNER SECTION

fL: Low-range frequency fH: High-range frequency

• FM RF

Signal generator: 1 kHz, 75 kHz dev., FM modulated

Test Stage

Frequency

Display

Serring/

Adjusting

Point

FM Band — 87.5 MHz (fL): L2 *1 Coverage 1.7 V ± 0.05V

FM RF 98.0 MHz 98.0 MHz L1 *2

(10-30 dB)

*1. Input: Antenna, Output: TP1 *2. Input: Antenna, Output: Speaker terminal

Instrument

Connection

– 10 –

HPJ201 HEADPHONES

MAIN PWB

L3 AM BAR ANTENNA

AM TRACKING fL

1

11

IC101

12

2

CNP602

3 2 1

AM TRACKING fH

AM IF

T3

FM RF

1

12

L1

L2

24

FM BAND

16

IC1

COVERAGE fL

13

TC1

R7

L4

TP1

AM BAND COVERAGE fL

Figure 10 ADJUSTMENT POINTS

CNP201

23

1

QT-CD250H/W

A. CD TEST MODE

Set the function switch to "CD" when pressing the "REVIEW(PRESET DOWN )" button together with "STOP(TUNING DOWN)" button.

Step-1. CD Pickup can be move when press the "CUE" button either "REVIEW" button. "CUE" button : CD Pickup move to out side of disc. "REVIEW" button : CD Pickup move to in side of disc. (CD Pickup can't move any more, if reach to most in side.) Note: If the CD Lid open (SW810 open), the unit can be operate Step-1 only and the unit can't operate from Step-2 to Step-5.

Step-2. The LASER light up when press the "PLAY/PAUSE" button.

Step-3. CD disc can be playing mode when press the "PLAY/PAUSE" button during the LASER ON.

The LCD displays indicate the "Track Number" and the "Playing Time".

Step-4. CD disc will be stop and the LASER goes out when pressing the "STOP" button, and return back to Step-1. (CD Pickup position keeps at that point).

Step-5. It can be control to ON/OFF of the Tracking Servo when press the "MEMORY" button during the CD playing mode. (The Servo will be ON when playing mode again, if to make stop mode during the Servo OFF condition.)

The LCD displays indicate the playing time of CD Pickup point. (The LCD displays indicate the playing time at that point when Pickup moving, if press the "CUE" button or press the "REVIEW" button.)

– 11 –

QT-CD250H/W

B. TUNER TEST MODE

Set the function switch to "TUNER" when pressing the "REVIEW(PRESET DOWN )" button together with "BAND(REPEAT)" button.

The LCD displays indicate the "TunEr" for several seconds. after that, the LCD displays indicate to the normal frequency.

PRESET. NO

P-01 FM 87.50 MHz FM 87.50 MHz FM 87.5 MHz STEREO P-02 FM 108.00 MHz FM 108.00 MHz FM 108.0 MHz STEREO P-03 FM 98.00 Hz FM 98.00 Hz FM 98.0 Hz STEREO P-04 FM 90.00 MHz FM 90.00 MHz FM 90.0 MHz STEREO P-05 FM 106.00 MHz FM 106.00 MHz FM 106.0 MHz STEREO P-06 AM 522 KHz AM 531 KHz AM 530 KHz P-07 AM 1620 KHz AM 1602 KHz AM 1620 KHz P-08 AM 990 KHz AM 990 KHz AM 990 KHz P-09 AM 603 KHz AM 603 KHz AM 600 KHz P-10 AM 1404 KHz AM 1404 KHz AM 1400 KHz P-11 FM 106.00 MHz FM 106.00 MHz FM 106.0 MHz MONO P-12 FM 90.00 MHz FM 90.00 MHz FM 90.0 MHz MONO P-13 FM 98.00 MHz FM 98.00 MHz FM 98.0 MHz MONO P-14 FM 108.00 MHz FM 108.00 MHz FM 108.0 MHz MONO P-15 FM 87.50 MHz FM 87.50 MHz FM 87.5 MHz MONO

QT-CD250H

QT-CD250W (9kHz span)

QT-CD250W

(10kHz span)

FM MODE

Note:

1. The Preset Channel can be change when press the "PRESET UP (CUE) button either "PRESET DOWN (REVIEW)" button. PRESET UP button is pressed : P-01 -> P-02 -> > > > > P-15 -> P-01 PRESET DOWN button is pressed : P-15 -> P-14 -> > > > > P-01 -> P-15

2. The Tuner Mode can be change when press the "BAND (REPEAT)" button. BAND button is pressed : FM stereo -> FM mono -> AM -> FM stereo

C. LCD TEST MODE

Set the function switch to "TUNER (or CD)" when pressing the "REVIEW(PRESET DOWN )" button together with "MEMORY" button.

All of the segments will light up.

– 12 –

QT-CD250H/W

D. VOLUME TEST MODE

Set the function switch to "POWER ON (TAPE PLAY, TUNER or CD)" when pressing the "REVIEW(PRESET DOWN )" button together with "PLAY/PAUSE (TUNING UP)" button. The LCD display do not indicate the VOLUME level at this time. But, the VOLUME level is "12" which is defaults level.

The VOLUME LEVEL can be change when press the "VOLUME UP" button either press the "VOLUME DOWN" button. "VOLUME UP" button is pressed : (12 VoL) -> 30 VoL -> 30 VoL (30 is flashing)

"VOLUME DOWN" button is pressed : (12 VoL) -> 1 VoL-> 0 VoL -> 0 VoL (0 is flashing)

E. TUNER FM/AM INTERVAL (SPAN) SELECTION (for QT-CD250W Only)

To change the tuning span: (default: AM 9 kHz/FM 50 kHz SPAN)

1. Set the function switch to TUNER.

2. Hold down the "MEMORY" button and the "PRESET DOWN button for at least 3-seconds.

Release the button when "AM SP 9 kHz" and "FM SP 50 kHz" are displayed alternately.

3. Press the "BAND" button to select the "AM SP 10 kHz" and "FM SP 100 kHz" are displayed alternately.

1 sec

Displayed alternately When press the "BAND" button

1 sec

4. Press the "MEMORY" button to set it when desired INTERVAL (SPAN) frequency displayed.

The unit will return back to the normal frequency displayed.

– 13 –

QT-CD250H/W

8 K

1/50

M

GND(AUDIO)

2 C

50V

SW810

CD LID OPEN/CLOSE

PICK-UP UNIT

LD

MON

LTOH30P1

TR+

FO+

FO-

TR-

2200P

K E B

A F C

2200P

1M

M702 SPINDLE MOTOR

M701 SLED MOTOR

SW702 PICKUP IN

1M

+

M

-

+

M

-

A

B

C

CD MOTOR PWB-B

VOLTAGE

NO.

GND

1

0.8V(0V)

2

0.V

3

3.5V(4.1V)

4

3.7V(4.1V)

5

3.2V(4.1V)

6

3.7V(4.1V)

7

GND

8

0.4V(0.1V)

9

3.0V(3.6V)

10

1.2V

11

1.2V

12

D

E

IC51

VOLTAGE

PIN NO.

FM ST

FM MONO AM

1

1.6V

2

GND

3

0.V

4

0V

5

0V

6

4.9V

7

-

8

3.1V

0V

9

2.9V

10

0V

11

5.0V

12

0V

13

0.9V

14

GND

15

0V

16

1.5V

17

3.2V

18

0.9V

19

0.9V

20

1.7V

21

GND

22

1.6V

RR+ F+ FG

PD VR LD

SP+ SPSL+ SL-

PU-IN GND

IC1

PIN NO.

13 14 15 16 17 18 19 20 21 22 23 24

FM ROD ANTENNA

K E A B F

2.9V(0V)

3.1V

0.7V

1.0V

0.9V

5.0V

3.6V(4.0V)

3.7V(4.1V)

5 4 3 2 1

1 2

3 4

5

6 7 8

6 5

4

3 2 1

CNP803

VOLTAGE

( ): AM

2V

GND

0.V

0V

4.9V

-

0.7V

0V

5.0V

0V

0.9V

GND

2.0V

0V

4.2V

0.9V

1.0V

GND

2.0V

CNS802

5 1 5 4

1 2 3 4 5 6 7 8

CNS801

6 5 4 3 2 1

CNS803

BI802

4 3 2 3 2 1

1 2 3 4 5 6 7

8

BI801

6 5 4 3 2 1

BI803

K E A B F

TR+ TRFC+ FCGND

PD VR LD

DM+ DMFM+ FMSLT+ SLT-

C856

100P

AM TRACKING fL

R2

3.3K

C27

0.001

R1

100K

VD1

KV1370NT

FM BAND

FILTER

1

+B

SLED DRIVER

AM BAR ANTENNA

PASS

F1

2

F

D1

C25

1N4148

0.047

IC1 FM/AM IF MPX., TA2104BN

SW102 RECORD/

CNP101

PLAYBACK

1 2 3 4

9

R

SW102-C

87

PLAYBACK

SW102-A

R

3

6

R

SW102 RECORD/ PLAYBACK

P

G

TAPE

RECORD/ PLAYBACK HEAD

L-CH

R-CH

ERASE HEAD

CNS101

1 2 3 4

H

• The numbers 1 to 17 are waveform numbers shown in page 19.

1

2

LASER DRIVER

Q801 KTA1266 GR

C802

0.022

4.4V(ON:2.8V) R801

22

3.7V(ON:2.1V)

C801

0.01

R802

2.2K

R811

C817

100/10

1.9V

0.5V

0.5V 0V

3.8V

0V

3.7V

1.9V

22K

C813 47/16

SERVO PRE AMP.

1

4.4V

2 3 4 5 6 7

8

9 10 11

12

1.4V(ON:1.9V)

IC803

FOCUS/

TRACKING/

SPIN/

LA6541D

COR801

+B

NC

L3

AM TRACKING fH

C8

0.001

C3

0.01

R3

C1

15P(CH)

C2

0.001

3

C33 220P

R104 12K

R102 330

P

21

54

P

SW102-B

100K

RF

GND

1

R7 10K

KV1520NT

L1

FM RF

24

OUT

FM RF

IN

FM RF

2

3

C13

0.47/50

+B

VD3

TC1

AM LOW

R103 12K

23

FM RF

CUT

MIX

4

R101 330

R

19

16 R

SW102-G

C9

0.022

C32

0.1

22

VCC

OUT

VCC

5

SW102-F

20 21

17

30

7.5V

R4 10

AM RF

R10

NC

18

28

29

1.9V

VCC

VREF

IC803 LA6541D

2

1

NC

1.9V

7.5V

C10

8P

C12 1/50

C5

0.1

L2

C7

0.001

21

IN

FM

OSC

IC1

TA2104BN

C14

0.047

330

AM IF

T3

R105 15K

C105

0.0018

L107 CHOKE

P

COIL

C107 820P

C108 820P

L108 CHOKE

P

COIL

C106

0.0018

R106 15K

27

1.9V

VG4

VIN4

VG1

VIN1MTVCC

4

3

1.9V

C11 360P

R8

C6

22P(CH)

R5

FM OSC

FM BAND COVERAGE fL

C15

220/10

C111 330P

C112 330P

26

25

3.4V

VO4+

VO1+

6

5

3.4V

R851

2.2K

AM BAND COVERAGE fL

AM OSC.

220K

R6 15K

22K

CF3

2

3

1

AM IF

R109 120

R110 120

VO4-

VO1-

L4

23

24

GND

VCC

7

GND

VD2

KV1370NT

IN

AM IF

6

CF2

C109 270P

0.6V

0V 0V

0.6V

C110 270P

34 5

Figure 14 SCHEMATIC DIAGRAM (1/2)

– 14 –

8

GND

L2

VCC

FNI FPI TPI TNI MDI LDO

SEL TEB 2VRO TEN

TEO

GND

1

FM IF

5

9

3

NC NC

20

IC801

TA2109F

9 10

C814

0.047

22

21

3.4V

GND

9

10

3.4V

GND

C34

R12

AM

OSC

2

3

C115

0.018(ML)

C113 47/16

3

NF1

IN1

IN2

NF2

11

C114 47/16

C116

0.018 (ML)

+B

C815 47/16

RFN

GND

8

RFO

AGCI

RFGC

IC801

TA2109F

RFGO

RFIS

RFRP

VRO FEN

FEO

SBAD

20

19

1.9V

3.4V

VO3-

VO3+

2

VO2+

VO2-

12

11

3.4V

1.9V

R852

220P

10

18

19

ST

OUT

OSC

CF1

2

1

FM IF

PRE AMP

VOLTAGE: PLAY and REC.

IC101 BA3311L

NC

4

18

VG3

VG2

13

1.9V

2.2K

17

IND

7

3

R113

8.2K

6

R114

8.2K

C816

0.022

24

23

22

21 20 19 18 17 16 15

14 13

R853

1.9V

VIN2

TUNER MUTE

R20 470

IF

FM IF

GND

1.9V

GND

0.1V

1.9V

0.5V

1.9V

0.9V

1.9V

0.8V

FOO

2.2K

TRO

NC

16

17

CD

VIN3

RES

REG OUT

REG IN

15

14

NC

FMO DMO

C806 330/10

IC51 LC72121 ELECTRONIC TUNING

Q1 KTC3199 GR

GND

0V

R13 10K

C20

330P

C21 10/16

C23 10/16

15

16

DET

OUT

REQ

IN

AGC

GND

9

8

C16

4.7/50

CF4

FM DET

R115

3.9K

OUT1

FILTER

ALC T

7

C118 10/16

R116

3.9K

C804

2P(CH)

C819

0.1(ML)

R803 82K

C821 100/10

0V

C18 0.001

C57 100P C58 100P

R17 47K

C26

0.1

IN

MPX

QUAD

10

R117

3.9K

3.1V

1

VCC

7.3V

10

7.3V

OUT2

12

3.2V

R118

3.9K

R804 68K

R805 39K

R806

2.7K C820

0.1(ML)

C807

0.047

C805

0.022

C19

2.2/50

R14

2.2K

R16

14

LPF1

VCO

R-CH

11

C72

(ML)

0.018

C117

10/16

8

2

0V

R120

R15 39K

3.3K

C22

1/50

13

12

C74 1/50

R72

4.7K

C119

3.3K

LPF2

C822

0.047

L-CH

R119

C120

D102

R807 1K

FM/AM

C73 1/50

2.2/50

1N4148

C24

C71

3.3K

47/16

SW102 RECORD/ PLAYBACK

C818 56P

SWITCHING

+B

0.1

R18 100

R71

4.7K

0.018(ML)

R

22

C121

0.01

+B

C123 220/10

D101

1N4148

R125 680K

13

C122

0.01

R SW102-H

7.5V(TUN:0V)

11

12

C68

R73

3.3K

R74

3.3K

R121

2.7K

SW102-E

24

23

R124

NC

14

15

R122

2.7K

+B

5.0V

(TUN:0V)

(TUN:5.0V)

Q802 KTA1273 Y

6.9V

(TUN:7.5V)

D804 1N4148

10

IO1

BO4

IO2

IFIN

14

13

220P

Speaker Case

P

R123

3.3K

P

+B

L803 220µH

SWITCHING

Q806 KTA1273 Y

5.0V

4.3V R845

R866

22K

3.3K D802

1N4148

Q803

7.5V

KRC107 M

R865

47K

4.5V

R879

0.5V)

(TUN:

R850

23

1.5K 0V

(TUN:7.5V)

1

GND

SWITCHING

R55 56K

R61

1K

R60

1K

R59

1K

NC

5

432

7

6

DO

CL

DI

BO1

BO2

LC72121

IC51

PD

FMIN

AIN

VDD

16

19

17

18

L51

R53

4.7K

100µH

C56

0.022

C60

0.0022

C59

0.01

R77

3.3K

R52

2.2K C55

2.2/50

R54 10K

R51 150

CD TU TA

SW201

100P

FUNCTION SELECTOR

Q209,Q210 X-BASS ON/OFF

R-CH CD TU TA

IC101 REC./P.B.EQUALIZER AMP. BA3311L

SW102-D

R

11 10

12

BIAS OSC.

L301

C352 100/10

R58

1K

8

9

BO3

FM/AM

MONO/

VSSD

15

C53

100/10

C61 100/10

C29

SW102 RECORD/ PLAYBACK

R126 100

C351

0.0022(ML)

D807 1N4148

ST

AMIN

COR1

C863 47/16

C841

0.047

C842

0.047

C843 47/16

+B

4.7K

+7.5V(CD)

R62

1K

CE

VSSX

AOUT

VSSA

20

21

L-CH

7 8 9

SW201-B

SW201-C

14 13

12

+B

P

NC

R351 100

C354

0.022(ML)

C839

0.047(ML)

R861 10K

1

XIN XOUT

22

C54

0.022

10

11

SW102 RECORD/ PLAYBACK

R353 33K

R352 150

C75 100P

C834 470P

C51 15P (CH)

C52 12P (CH)

R76 820

R234

2.2K

C353

0.0056 (ML)

C832 47/16

C835 470P

C836

0.047(ML)

C837

0.047(ML) C838

0.047(ML)

L807

0.82µH

X51

4.5MHz

5.0V (CD: 0.4V)

KRA102 M

TUNER

SWITHCING

R233

2.2K

R235

47K

C223

C224

R236

47K

BIAS OSC.

Q351

KTC3199 GR 0V (REC: 0.4V)

C825 47/16

C826 47P

R820

47K

R826

220K

R827 15K

C827

0.015(

C830

0.01(ML)

C828

0.0027

C829

R854 100

SWITCHING

2

5.0V

1

GND

3

Q2

R239

2.2K

R237

2.7K Q209

KTC3199 GR

0V

0.1/50 GND

GND

0.1/50

0V

R238

2.7K

R240

2.2K

+B

R354

4.7

0.0047

C854

0.0068

L-CH(CD)

(CD: OPEN)

0V(OFF:0.6V)

Q210 KTC3199 GR

C242 1/50

Q211,Q212 LINE AMP

0V

(REC: 4.0V)

0V

R828 10K

+B Q805

KRC107 M

D806 1N4148

+B

R-CH(CD)

C241 1/50

R241 10K

R242 10K

R458 1K

4.4V

R243 560K

R244 560K

C833

0.033(ML)

R812 1K

R830 10K

R831

3.3K

R834

3.3K

X801

3

1

GND

R456 15K

R457 1K

M601 TAPE MOTOR

SW601 TAPE MAIN

16.93MHz

C845

0.047

0V (TUN:7.5V)

2 R862

47K

R455 15K

R245

5.6K

0.8V

C243

330P

R247

C244

330P

R248

0.8V

2.0V

R246

5.6K

560

+B

0.2V

560

0.2V

M

R249 220

R829

3.3K

R833

3.3K

R832

3.3K

2.0V

4.4V

Q804 KTA1 SWIT

+B

Q211

KTC3199 GR

C247

220/10

Q212

KTC3199 GR

-

+

6

R 1

C245

QT-CD250H/W

5

FM SIGNAL AM SIGNAL

CD SIGNAL PLAYBACK SIGNAL

RECORD SIGNAL

CD CONTROL PWB-A2

5

4

11

PLAY/PAUSE/

TUNING UP

CNS801

1 2 3 4

D651

1N4004

D654

1N4004

321

R847

5.6K

SW801

SW802 STOP/

TUNING

DOWN

R808 100

C810 10/16

+B

1

2

3

CNP201

CNS201

F651

T1.25A L

250V

C651

0.022

C654

0.022

TERMINAL A PWB-A5/ TERMINAL B PWB-A6

REMOTE SENSOR

FW801

FW802

CNP801

LCD DISPLAY

LCD801

X-BASS

MEMORY

ST

KHz MHz

20

19

15

14

6

N64H380A

UN801

8

7

R848 10K

SW803

REPEAT/

BAND

UN801

3

11

9

10

+B

R849 18K

SW804 TUNER/

MEMORY

1

2

13

12

PRESET

SW809 X-BASS

SW808

VOLUME DOWN

SW807

VOLUME UP

16

SW805

CUE/

18

17

R841

5.6K

SW806

REVIEW/

PRESET

DOWN

UP

R857 47K

R855 18K

SWITCH PWB-A4

R227 120

R228 120

HPJ201 HEADPHONES

MAIN PWB-A1

+

SP201 L-CH 4 OHM

-

SPEAKERS

-

SP202 R-CH 4 OHM

+

AC220-240V

SW651 VOLTAGE SELECTOR

AC110-127V

QT-CD250W

AC INPUT

SELECTORAC/DC

AC INPUT

ONLY

SO651 AC INPUT SOCKET

AC/DC SELECTOR

T651

POWER

TRANSFORMER

AC110V-127V/

220V-240V,50/60Hz

FOR QT-CD250W

T651

POWER

TRANSFORMER

For U.K./Europe/Australia/New Zealand; AC230-240V,50Hz For Philippines; AC220V,60Hz

FOR QT-CD250H

R824 10K

1.5V

(TUN:0V)

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 78 79 80

4.4V

DVSR

(TUN:0V)

C872

0.0047

C844

1N4148

+5V(CD)

GND(POWER)

+4.5V(BACK UP)

C232 1/50

SW201 FUNCTION SELECTOR

SW201-A 4

CD

3 2

TAPE

NC

+B

0V

12

LPFN LPFO

(TUN:0V)

PVREF

(TUN:0V)

VCOF

(TUN:0V)

AVSS SLCO

1.9V(TUN:0V)

RFI AVDD RFCT RFZI RFRP

1.9V(TUN:0V)

FEI SBAD

1.9V(TUN:0V)

TEI TEZI FOO

1.9V(TUN:0V)

TRO VREF RFGC TEBC

1.9V(TUN:0V)

FMO DMO 2VREF

0V

SEL VDD2 VSS2 XVSS

2.0V(TUN:0V)

XI

(TUN:0V)

XO XVDD

17

GND

100/10

R836 270

C852

3.3/50

GND(CD)

7.5V

+B

48

49

50

P2VREF

PDO

TMAX

1.9V

3.7V

(TUN:0V)

1.9V

1.7V GND

1.9V(TUN:0V)

4.4V(TUN:0V)

1.9V(TUN:0V)

0.9V(TUN:0V)

0.7V(TUN:0V)

1.9V(TUN:0V)

0.5V(TUN:0V) 0V

1.9V(TUN:0V)

3.7V(TUN:0V)

4.4V(TUN:0V) GND GND

DVRR

2.2V

RO

(TUN:0V)

82

83

81

C853

0.022

C850

0.0022

R838 10K

R209 1K

C229 1/50

C231 1/50

R251 22K

R252 22K

+B

1

3.7V

C848

47

VSS1

(TUN:0V)

2.1V (TUN:0V)

84

22/16

C249

C823

0.022

GND

46

45

VDD1

4.4V(TUN:0V)

5

6

11

14

4.2V(TUN:0V)

2.1V(TUN:0V)

DVRL

DVDD

85

86

C847

22/16

C849

0.0022

STB

DATA

R213 100

+B

Q204 KTA1273Y

5V

5.0V

C204

0.022

100P

D202

1N4148

C824

47/16

43

44

SBSY

SBOK

13

7

1

15

4 16

GND

DVSL

2.2V(TUN:0V)

LO

88

87

L801 220µH

R835 270

C851

3.3/50

R837 10K

R215

1K

R216

CK

CS

10

9

0V

8

7

GND

R214

1K

C230 1/50

+B

7.0V

Q205

KTC3199 GR

R203 270

R868

4.7K

R867

4.7K

NCNCNC

41

42

40

DOUT

X-BASS

P_MUTE

0V(TUN:5.0V)

0V(X-BASS OFF:4.9V)

IC802 SERVO/ SIGNAL

CONTROL

TC9457F2

5V

RESET

GND

NC

89

91

90

NC R825 10K

R839

47K

R217

C215

0.039(ML)

1K

R219

2.5V

220K

11

12

IC202

2.5V

0V

6

5

R220 220K

C216

0.039(ML) R218

R210 1K

C207 470/10

ZD203 ZD2.4BSB

D205

C210

0.022

7.5V

C211

0.047

7.5V

D203

4.9V

C203

4.4V ZD201

DZ5.1BSB

R870

4.7K

R869

4.7K

GND

39

38

37

TEST4

TEST5

STB_(VOL)

CE_(PLL)

0V

REMO-IN

5V5V2.5V

MXI

MXO

HOLD

94

93

92

R863

1.8K

C846

1/50

R860

4.7K

+B

IC202 ELECTRONIC VOLUME TC9260P

8.2K C217

0.0039(ML)

15

13

14

2.5V

4 3 2

2.5V

C218

0.0039(ML)

8.2K

R207 560

Q206 KTA1046 Y

7.5V

8.4V

C212

0.047

8.4V

1N4148

7.0V

Q207

KTC3199 GR

R206 560

REGULATOR

Q204,Q205:5V REGULATOR

R202

10K

R201

1.2K

1N4148

0.01

C202 47/16

GND

36

35

TEST2

TEST3

0.6V(TUN: 5.0V)

4.9V(TUN: 0V)

5.0V(TUN:0V)

0V(TUN: 5.0V)

2.4V

GND

5.0V

MVDD

MVSS

95

96

R864

1M

X802

4.19MHz

R221

4.7K

4.6V

16

VDD

VSS

1

2.5V

GND

C208

0.022 C205 47/16

7.5V REGULATOR

9V

R205

4.7K

D204

0V

C209

ZD202

DZ7.5BSB

16

C870 100P

GND

33

34

TEST1

TEST0

0V(TUN: 4.9V)

5.0V

0V

GND

5.0V

2.3V

COM1

COM2

98

97

C862

0.1

D805

0V

(ON:4.4V)

C213

0.1/50

R253

3.9K

MUTE

R223

4.7K

0V(ON:0.6V)

R224

4.7K

0V(ON:0.6V)

MUTE

R222

4.7K

R204

2.2K

1N4148

0.01

SW201 FUNCTION SELECTOR

SW201-D

C302

0.022

0V

32

CL

5.0V

CD-FUNC

2.5V

COM3

99

2.3V

1N4148

R225 100K

C214

0.1/50

C206

19 18 17

C825 47/16

C826 47P

R820

47K

R827 15K

C830

0.01(ML)

C828

0.0027

C829

0.0047

R828 10K

C833

0.033(ML)

R812 1K

C854

0.0068

R830 10K

R831

3.3K

R834

3.3K

L) L)

L)

R854 100

WITCHING

1 MHz

.4V)

2

3

Q2

102 M NER HCING

R237

2.7K

R238

2.7K

R240

2.2K

5.0V

1

GND

(CD: OPEN)

R239

2.2K

Q209 KTC3199 GR

0V

GND

0V

Q210 KTC3199 GR

+B Q805

KRC107 M

4.4V

D806 1N4148

+B

R458 1K

L-CH(CD)

R-CH(CD)

R243 560K

C241 1/50

0V(OFF:0.6V)

R241 10K

R242 10K

0V(OFF:0.6V)

C242

R244

1/50

560K

Q211,Q212 LINE AMP

X801

16.93MHz

C845

0.047

0V (TUN:7.5V)

2

3

R862 47K

1

GND

R456 15K

R455 15K

R457 1K

R245

5.6K

0.8V

C243

330P

R247

C244

330P

R248

0.8V

2.0V

R246

5.6K

R AMP.

+B

OSC.

99 GR .4V)

0V

(REC: 4.0V)

M601 TAPE

0V

354

.7

MOTOR

SW601 TAPE MAIN

R826

C827

0.015(ML)

+B

R829

3.3K

R832

3.3K

R833

3.3K

4.4V

Q804 KTA1266 GR SWITCHING

2.0V

Q211

0.2V

560

0.2V

Q212

R249 220

M

220K

R821 1K

R840 10

5.0V

+B

KTC3199 GR

C245

1/50

C247

220/10

KTC3199 GR

-

+

+B

C840

0.1

5.0V

+B

GND(AUDIO)

+B

D801

+5V(u COM)

R871

QT-CD250H

4.7K

R872

4.7K

31

DO

5.0V

(TUN:0V)

DI

NC

ADIN3

KEY2 KEY1

CD POWER

PU IN

DOOR IN

TUNERFUNC

MVSS1 MVDD1

NC SEG17 SEG16 SEG15 SEG14 SEG13 SEG12 SEG11 SEG10

SEG9 SEG8 SEG7 SEG6 SEG5 SEG4 SEG3 SEG2

SEG1

COM4

100

2.3V

R900 47K

R901 47K

Q203 KTA1266 GR

4.8V(ON:4.4V)

4.4V(ON:3.8V)

Q201

KTC3199 GR

C246 10/16

GND

0V

D201

1N4148

+B

47/16

CD

TUN TUN TAPE

+B

ONLY

R880

22K

30

R859

29

47K

28 27 26 25 24 23 22 21

R876

20

10K

19 18

NC

17 16 15 14 13 12

11

10

9 8

7 6 5 4 3 2 1

R898

R899

47K

SWITCHING MUTE

R250 470K

C219

0.1/50

R211

47K

0.V

C221

0.001

GND

C225

C236

100/10

Q202

KTC3199 GR

C222

0.001

R212

47K

0V

C220

0.1/50

0.6V

R231 120

100/10

R875 10K

R878 10K

C235

R232

R873

4.7K

0V

100/10

GND

120

0.6V

+B

7 8

9

4

6

C227

+B+B

5

+B

R877 10K

5.0V-

4.6V

8.2V-

8.4V

4700/16

C864

R844

22K

R843

4.7K

R846

4.7K

C865

100/10

0.1

R882 47K

R883 47K R884 47K R885 47K R886 47K R887 47K R888 47K R889 47K R890 47K R891 47K R892 47K R893 47K R894 47K R895 47K R896 47K R897 47K

D803

1N4148

+

-

8.6V-

8.0V

IC201

TA8227P

POWER AMP.

8.6V-

8.0V

+

4.5V-

4.2V

9.0V

1

12

C201 100/16

C226

0.022

CNP602

CNS602

3

2

1

+B

R842

22K

12 12 11 10 10

99 77 66 55 44

11 22

33 88 11 22 33 44 55 66 77 88

99

+B

10 10 11 11

+B

1 2 3 4

R856

15K

+B

C233

4.5V1000/10

4.2V

11

C237 100/10

10

GND

C239

0.1(ML)

13 14

GND

C240

0.1(ML)

3

C238

100/10

2

C234 1000/10

POWER PWB-A3

D652

1N4004

C652

0.022

D653

1N4004

C653

0.022

BATTERY DC 9V ["D" size (UM/SUM-1,R20 or HP-2) battery x 6]

BATTERY DC 4.5V ["AA" size (UM/SUM-3,R6 or HP-7) battery x 3 for backup memory]

• NOTES ON SCHEMATIC DIAGRAM can be found on page 18.

78 9 101112

Figure 15 SCHEMATIC DIAGRAM (2/2)

– 15 –

QT-CD250H/W

SPEAKERS

L-CH

SP201 SP202 R-CH

PLAY REC

R216

R895 R894

R213

R209 R217 C217 R219 C215

R862

(255)

R215

Q804

B

C

E

R842

R901 R900 R899 R898

R887 R886 R885 R884 R883 R882

R846

R123

R124

R252

16 15 14 12 13 11 10 9

ZD203

R844

R897 R896

R893

PLAYBACK

C105

C208

C207

R214

R860

L801

X802

C862

C865

R843

BL

SW102

RECORD/

R104

R121

R105

C230

C205

1 2 3 4 5

IC202

6 7

C246

8

R225 C214

R253 R250

R455

C851

C849

C847

R825

C846

100

1

QTCD250H ONLY

C864

– 16 –

A

BK

GYBKRD

1 2 3

CNS201

B

C

D

E

F

G

H

UN801

SWITCH

PWB-A4

SW803 REPEAT/ BAND

PLAY/PAUSE/

SW805 CUE/ PRESET UP

R855

SW808 VOLUME DOWN

R857

R809

1 2 3

C810

R808

SW809 X-BASS

SW802 STOP/TUNING

R848

R849

LCD801

11

R841

R847

SW801

TUNIG UP

CD CONTROL

SW807 VOLUME UP

CNS801

1 2 3 4

SW804 TUNER/ MEMORY

1

5

10

15

20

12

1

FW802

PWB-A2

SW201

FUNCTION

SELECTOR

SW806 DOWN/ REVIEW/ PRESE

FW801

TAPE

TUNER

CD

SW201

BC

AD

OFF

POWER ON

GY GY

OPEN/CLOSE

CNP801

4 3 2 1

15

14

4

17

16

AM BAR ANTENNA

Q212

R234

R233

Q210

R241

SW810 CD LID

BR

R244

C244

R240

C242

R236

R242

R246 R248

E C B

B C E

R856

L3

C224

R238

C245

R74 R73

Q211

R245

E C B

B C E

12

1

C247

R458

TO SP202 (R-CH)

C231

R243

C243

R239 C241 R235 R237 C223

Q209

11

R892 R891 R890 R889

R251

R247

1

C232

R457

R249

Q805

R888

CNP201

1 2 3

C229

R207

11

D806

3 2 1

• The numbers 1 to 17 are waveform numbers shown in page 19.

1

2

34 5

Figure 16 WIRING OF P.W.BOARD (1/2)

D101

R119

R839

R864 R863

R875

R223

R224

R837

R103

R835

R876

C216

R877

R59 R60

R61 R62

R221

R210

R456

C853

5

R115

C121

C218

95

10

R13 R55 R58

1 2 3 4

ABCD

EFGH

R101

C115

R113

C113

R109

C109

51 789

R117

234

C117

D102

C123

R125

C120

C213

R222 R218

R211

R220

E C

Q201

B

B C

R212

Q202

E

Q203

C220

B C E

R254

D805

D803

C852

R838

C850

R854

C848

R836

C844

C872

C845

R821

X801

81

80

85

75

90

70

65

60

IC802

15

20

40

25

35

30

31

R880

R859

C870

R861

R879

R872

R873

R878

C75

3 2 1

Q2

R76

X51

C51

C107

L107

C111

6

IC101

C219

R231

C235

R840 C832

C840

55 45

C823

R871

COR801

1

BKGYGYGYGY

R51

R54

C68

11

12

10

15

IC51

5

20

1

22

CNP101

C108

C112

C237

C221

50

BI803

C61

C54

R77

51

121110

C225

C825

R870

R869

C29

L108

C110

C222

R832

C52

C119

C833

Q803

R7

C18

C56

R826

R110

R824 C824

1 2 3

C9

C8

C59

R102

R118

R120

R868

L51

C114

R812

GY

C351

L301

R351

C354

C238

R820

C239

C201

R232

R807 C819

R352

C352

C233

C236

R851

C240

C302

R803

C829

R805

D201

D801

C821

C818

C804

C815

C817

R852

R354

C234

C822

R804

Q801

E C

Q351

B

R353 C353

3 2 1

CNP602

C813

C814

13

15 10

24

R806

C816

C820

C801 C802

R801

B C E

C839

C838

16

15

20

10

IC803

5

25

C805

1

30

C210

C212

12

IC801

1

C835

C834

Q206

520

R802

C249

B C E

BI802

BI801

R853

C807

R811

R227

ZD202

R205

5

1

8

1

C209

R204

D204

Q207

C806

1

E C B

D205

C856

C211

R865

R228

Q802

C206

Q204

R202

10

E C B

6

Q205

R206

B C E

5

8

BR WH WH WH WH

WH WH WH WH WH WH WH BR

E

C

B

CNS802

1 2 3 4 5

8 7 6 5 4 3 2 1

CNS801

R201

ZD201

D203

COR1

HPJ201 HEADPHONES

C202

C203

D202

R203

C204

7

9 2

3

12

C106

R116

R106

R114

C116

R126

C118

R122

C122

C226

12

1 2

11

3

10

14

13

4

9

IC201

8

5

7

6

C227

C837 C854

R834

R833

C836

R831

R830

R829

C863

C841

R828

C828

C830

R827

C827

C826

C843

C842

L803

R867

Q806

E C B

R845

R866

D802

D807

R850

L807

6

D804

13

R1

C2

R3

TC1

C10

VD3

R8

C12

C11

R2

R6

C6

L4

R14

C57

C53

C58

R53

C60 R52

C55

R18

C19

VD2

R5

C7

R20

C23

Q1

R15

B

C

R17

E

C27

C1

VD1

L1

C5

L2

C32

1

24

R4

IC1

20

R12

R71

5

C34

10

15

C21

13

12

C71

C20

C22

C26

C24

R16

C73

C74

F1

1

C3

2

3 2 1

CF1

C16

C72

R72

D1

3

C33

1 2

R10

3

CF2

C15

C25

C13

T3

CF3

C14

CF4

MAIN PWB-A1

6

ERASE HEAD

(240-5)

TAPE

RECORD/PLAYBACK

HEAD(240-4)

(241)

QT-CD250H/W

(241)

SW601

TAPE MAIN

(240-7)

RD

OR

M601

TAPE MOTOR

(240-6)

BR

OR

(229)

CNS101

1 2 3 4

(230)

BATTERYS DC9 V [ "D" size(UM/SUM-1, R20 or HP2) battery x 6 ]

POWER PWB-A3

PICK UP UNIT

WH BK RD BK

F651

T1.25A L 250V

C652

D653

D652 D654

D651

C651

C654

C653

BKRDWH

BK

TERMINAL B PWB-A6

BATTERYS

DC4.5V ["AA" SIZE(UM/SUM-3,

R6 or HP7)battery x 3]

(241)

TERMINAL A PWB-A5

QT-CD250W ONLY

SW651

VOLTAGE SELECTOR

AC220V-240V AC110V-127V

BL

RD

OR

YL YL

RD GY

BL

OR

1 2

3

CNS602

BR[QT-CD250W]

T651

POWER

TRANSFORMER

RD[QT-CD250H]

RD RD

For QT-CD250H

BR

SO651

AC INPUT

SOCKET

QT-CD250H

For U.K./Europe/

Australia/

New Zealand;

AC230-240V,50Hz

For Philippines;

AC220V,60Hz

QT-CD250W

AC110-127V/

AC220-240V,

50/60Hz

CD MOTOR PWB-B

+

M701

SW702 PICKUP IN

COLOR TABLE

BR

BROWN

RD(R)

OR

ORANGE

YL

YELLOW

GR

GREEN

BL

BLUE

VL

VIOLET

GY

GRAY

WH(W)

WHITE

BK

BLACK

PK

SLED MOTOR

RED

PINK

M702 SPENDLE MOTOR

+

-

54321

78 654321

CNS803

BK

1

GY

2

GY

3

GY

4

GY

5

GY

6

(233)

CNP803

1 2 3 4 5 6

-

F3895AF

FM ROD ANTENNA(237)

78 9 101112

Figure 17 WIRING OF P.W.BOARD (2/2)

– 17 –

QT-CD250H/W

NOTES ON SCHEMATIC DIAGRAM

• 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 symbol P means micro-micro-farad and the unit of the capacitor without such a symbol is microfarad. As to electrolytic capacitor, the expression “capacitance/withstand voltage” is used. (CH), (TH), (RH), (UJ): Temperature compensation (ML): Mylar type (P.P.): Polypropylene type

• The indicated voltage in each section is the one measured by Digital Multimeter between such a section and the chassis with no signal given.

REF. NO

SW102 RECODE/PLAYBACK REC—P.B. SW201 FUNCTION SELECTOR TAPE/OFF—

SW601 TAPE MAIN OFF—ON SW651 VOLTAGE SELECTOR AC220-240V—

SW702 PICKUP IN OFF—ON SW801 PLAY/PAUSE/ OFF—ON

SW802 STOP/TUNING DOWN OFF—ON SW803 REPEAT/BAND OFF—ON SW804 TUNER/MEMORY OFF—ON SW805 CUE/PRESET UP OFF—ON SW806 REVIEW/ OFF—ON

SW807 VOLUME UP OFF—ON SW808 VOLUME DOWN OFF—ON SW809 X-BASS OFF—ON SW810 CD LID OFF—ON

DESCRIPTION

(QT-CD250W ONLY) AC110-127V

TUNING UP

PRESET DOWN

POSITION

TUNER/ON—

CD/ON

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.

FRONT

VIEW

ECB (S)(G)(D) (1) (2) (3)

KRA102 M KRC107 M KTA1046 Y KTA1266 GR KTA1273 Y KTC3199 GR

Figure 18 TYPES OF TRANSISTOR

– 18 –

WAVEFORMS OF CD CIRCUIT

NO DISC FOCUS SEARCH STOP PLAY

QT-CD250H/W

1

IC802 66pin

IC803 20pin

IC803 21pin

IC802 74pin

IC802 62pin

IC802 64pin IC802 71pin

IC802 62pin

IC802 63pin

FOO

FO+ 2

2 3

FO- 3 DMO 3

FOCUS SEARCH TOC IL STOP PLAY

4

SEL 1 TEI 1

5

FEI 2 TRO 2

TEI 3 FMO 3

6

STOP PLAY CUE

5

FEI

SBAD 2 TRO 2

7

1 TMAX 1

1 TEI 1

12

IC802 50pin

13

IC802 45pin

14

IC802 72pin

6

IC802 64pin

11

IC802 67pin

15

6

IC802 64pin

11

IC802 67pin

SBOK

2

RFO 3 FMO 3

8

IC801 22pin

STOP PLAY REVIEW

5

FEI

IC802 62pin

RFGO 2 TRO 2

9

IC801 19pin IC802 67pin

RFRP 3

10

IC801 17pin

STOP PLAY TCD-782 TNO-02 PLAYBACK

TEI 1LO 1

6

IC802 64pin

TRO 2

11

IC802 67pin

SBAD 3

7

IC802 63pin

1 TEI 1

15

IC802 71pin

6

IC802 64pin

11 15

IC802 71pin

16

IC802 86pin

17

IC802 82pin

FMO

RO 2

3

– 19 –

QT-CD250H/W

TROUBLESHOOTING (CD SECTION)

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 the objective lens, and check the playback operation. When this section does not operate even after the above step is taken,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.

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. You will hear music for about 20 seconds and the CD player will automatically stop. If it continues to turn, press the stop button.

CAUTION

The CD lens cleaner should be effective for 30 - 50 operations, however if the brushes become worn out earlier then please 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.

Cleaner Liquid

• The CD function will not work.

The CD operating keys don't work.

Yes

Check the power supply, 16.93 MHz clock, and reset terminal.

Yes

Check the pickup-in switch (SW702) position.

Yes

Check the Focus system.

Cleaning Disc PARTS CODE: UDSKA0004AFZZ

Figure 20

– 20 –

• Laser failure.

QT-CD250H/W

Is +7.5V applied to the Collector of Q206 ?

Yes

Is +5V applied to the collector of Q204 and Q806 ?

Yes

Is +5V applied to the pin 75 (VDD) and pin 96 (MVDD) of IC802 ?

Yes

Is +5V applied to the pin 1 (VCC) of IC801 ?

Yes

Is +0V applied to the pin 74 (SEL) of IC802 ?

Yes

Is approx. 1.8V applied to the collector of Q801.

Yes

Check BI801/CNS801. If it is normal, the optical pickup is faulty.

No

Check the PWB pattern of Q206.

Check the PWB Patten of IC204 and Q806.

Check the PWB pattern between collector of Q806 and pin 75 of IC802, and emiter of Q806 and Q804 and pin 96 of IC802.

Check the PWB pattern between collector of Q204 and pin 1 of IC801.

Check the laser come on when pattern cut between pin 8 (SEL) of IC801 and pin 74 (SEL) of IC802.

Check the peripheral parts of IC801 and Q801. If it is normal, the optical pickup is faulty.

• Focus failure.

Does the optical pickup move up and down when the disc is removed?

Yes

Is the following waveform ouput at the pin 62 (FEI) of IC802 when the disc is set?

Yes

pin 62 (FEI)

pin 86 (FOO)

pin 63 (SBAD)

Is the waveform shown above input at the pin 63 (SBAD) of IC802?

Yes

IC801 is faulty.

No

Check as stated in item "FOCUS SERVO SAWTOOTH WAVE FAILURE".

Check the periphery of IC801 and BI801/CNS801. Is it normal?

Yes

The optical pickup is faulty.

Check the pattern between pin 13 of IC801 and pin 63 of IC802. Check the periphery of IC801 and BI801/CNS801.

– 21 –

QT-CD250H/W

• Focus servo sawtooth wave failure.

Is sawtooh wave output to the pin 66 (FOO) of IC802 ?

Yes

1.5~2.5sec

Is +7.5V applied to the pins 1 and 30 (VCC) of IC803 ?

Yes

Is sawtooth wave obtained between pins 20 and 21 of IC803 ?

Yes

1.5~2.5sec

Is sawtooth wave obtained between pins 3 and 4 of BI801/ CNS801 ? (as shown above)

Yes

BI801/CNS801 connection failure or optical pickup failure.

No

IC802 is faulty.

Check the PWB pattern of IC803.

Check the PWB pattern between BI801/CNS801 and IC803.

• Spindle motor clv servo failure.

Is following wave output to the pin 72 (DMO) of IC802 when the Function is changed to "PLAY" from "STOP" ?

Yes

DMO

Is above wave obtained between pins 5 and 6 of IC803 ?

Yes

Is above wave obtained between pins 5 and 6 of BI803/ CNS803 ?

Yes

BI803/CNS803 connection failure or optical pickup failure.

No

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.

Check the PWB pattern between BI803/CNS803 and IC803.

– 22 –

• Track search failure

QT-CD250H/W

Does the sled motor run in FF/REW state when the CD TEST MODE is set?

Yes

Is the following wave output to the pin 67 (TRO) of IC802 during track search in normal playback?

Yes

TRO

Is the following wave output to the pins 12 (TEO) of IC801 during track search in normal playback?

Yes

TEO

TEI

TEZI

Is the above wave output to the pins 64 (TEI) and 65 (TEZI) of IC802 during track serch in normal playback?

Yes

Is the following wave output to the pin 60 (RFZI) and 61 (RFRP) of IC802 during track search in normal playback?

Yes

RFRP

RFZI

No

Check as stated in item "SLED MOTOR OPERATION FAILURE".

IC802 failure.

Check the PWB pattern between pin 67 (TRO) of IC802 and pin 28 of IC803. Check the PWB pattern between pins 25 and 26 of IC803 and Optical pickup. If OK. Optical pickup failure.

Check the PWB pattern between pin 12 (TEO) of IC801 and pins 64 (TEI) and 65 (TEZI) of IC802. If OK. IC801 failure.

Check the PWB pattern between pin 22 (RFO) and 18 (RFIS), 17 (RFRP) of IC801 and pins 60 and 61 of IC802. If OK. IC801 failure.

Normal.

• Sled motor operation failure.

Is following sled feed signal output the pin 71 (FMO) of IC802 when FF/REW key is pressed after the CD TEST MODE is seted?

Yes

Is following sled feed signal input the pins 12 and 13 of IC803 when FF/REW key is pressed after the CD TEST MODE is seted?

Yes

Is sled feed signal output the pins 10 and 11 of IC803?

Yes

Is sled feed voltage applied between both terminals of sled motor?

Yes

Check the CD mechanism (periphery of sled motor). If the sled motor does not run when DC2.0V is applied to both terminals of sled motor, the sled motor is faulty.

FF REW

FMO

FF REW

SL ±

No

IC802 is faulty.

Check the PWB pattern between pin 71 of IC802 and pins 12 and 13 of IC803.

Check the peripheral parts of IC803. If OK, IC803 is faulty.

Check the BI803/CNS803.

• Sled servo failure.

Is following sled signal output the pin 71 (FMO) of IC802 during playback?

Yes

FMO

Normal.

No

IC802 is faulty.

– 23 –

QT-CD250H/W

FUNCTION TABLE OF IC

IC51 VHiLC72121/-1: Electronic Tuning (LC72121) (1/2)

Pin No.

1 Xtal XIN Output Crystal oscillator connection.(4.5 MHz/7.2 MHz) 2 Ground VSSX Output Ground terminal for the crystal oscillation circuit system of LC72121. 3 Chip enable CE Output High level when inputting serial data (DI) to LC72121 or sending

4 Input data DI Input Input terminal for serial data that is transferred from the controller to

5 Clock CL Output Clock that synchronizes data when inputting serial data (DI) to

6 Output data DO Output Output terminal that sends data from LC72121 to the controller. The

7* Output port BO1 Output Output dedicated terminal.

8-10 Output port BO2-BO4 Output Output dedicated terminal.

11 Input/output port IO1 Input/Output Terminal for both input and output.

12 IF counter IF IN Input Input frequency is 0.4-12 MHz.

13 Input/output port IO2 Input/Output Terminal for both input and output.

14 Ground VSSD — Ground terminal for the digital system other than VSSA and VSSX of

Port Name

Terminal

Name

Input/Output

Function

serial data (DO).

LC72121.

LC72121 or sending serial data (DO).

output data is defined by serial data DOC0-DOC2.

Output state is defined by the serial data BO1-BO4. Data 0: Open Data 1: L Time base signal (8 Hz) output is possible from BO1 terminal. (When setting serial data TBC = 1.)

Input and output are defined by serial data IDC1 and IOC2. Data 0: Input port Data 1: Output port When specified as the input port. The input terminal state is transferred from the DO terminal to the controller. Input state "L": Data -> 0 Input state "H": Data -> 1 When specified as the output port. Output state is defined by the serial data IO1 and IO2. Data 0: Open Data 1: L When turning on the power or resetting, the terminal becomes the input port.

Signal is transferred to the IF counter directly. The result is sent from M5B of the IF counter through DO. 4 measuring times: 4, 8, 32, and 64 ms

Input and output are defined by serial data IDC1 and IOC2. Data 0: Input port Data 1: Output port When specified as the input port. The input terminal state is transferred from the DO terminal to the controller. Input state "L": Data -> 0 Input state "H": Data -> 1 When specified as the output port. Output state is defined by the serial data IO1 and IO2. Data 0: Open Data 1: L When turning on the power or resetting, the terminal becomes the input port.

LC72121.

In this unit, the terminal with asterisk mark (*) is (open) terminal which is not connected to the outside.

– 24 –

QT-CD250H/W

IC51 VHiLC72121/-1: Electronic Tuning (LC72121) (2/2)

Pin No.

15 Local oscillation, Signal input AMIN Input Serial data input: AMIN is selected when DVS = 0 is set.

16 Local oscillation, Signal input FMIN Input Serial data input: FMIN is selected when DVS = 1 is set.

17 Power supply VDD — Power supply terminal for LC72121 (VDD = 2.7-3.5 V).

18 Charge pump output PD Output Charge pump output terminal for PLL.

19 L.P.F. Amplifier transistor AIN Input L.P.F. Amplifier transistor 20 L.P.F. Amplifier transistor AOUT Output L.P.F. Amplifier transistor 21 Ground VSSA — Ground terminal for the low-pass filter MOS transistor of LC72121. 22 Xtal XOUT Output Crystal oscillator connection.(4.5 MHz/7.2 MHz)

Port Name

Terminal

Name

Input/Output

Function

When serial data input SNS = 1 is set: Input frequency is 2-40 MHz. Signal is sent to the swallow counter directly. Dividing number to be set is 272- 65535. The actual dividing number is the same as the setting value. When serial data input SNS = 0 is set. Input frequency is 0.5-10 MHz. Signal is transferred to the 12-bit programmable divider directly. Dividing number to be set is 4-4095. The actual dividing number is the same as the setting value.

Input frequency is 10-160 MHz. Signal is transferred to the swallow counter through the built-in prescaler (1/2). Dividing number to be set is 272-65535. The actual dividing number is twice as the setting value because there is a built-in prescaler(1/2).

Power on reset circuit works when POWER ON.

When the local oscillation signal frequency divided by N is higher then the refernce frequency, "H" level is sent from the PD terminal. When it is lower, "L" level is sent. When the frequencies are the same, they become high impedance.

VSSx

XIN

XOUT

FMIN

AMIN

CE

DI

CL

DO

DD

V

VSSd

2 1

22

16

15

3 4 5

6 17 14

1/2

CCB

I/F

POWER

ON

RESET

REFERENCE

DIVIDER

SWALLOW COUNTER

1/16, 1/17 4bits

12bits PROGRAMMABLE

DIVIDER

DATA SHIFT REGISTER

LATCH

PHASE DETECTOR

CHARCE PUMP

UNLOCK

DETECTOR

UNIVERSAL

COUNTER

18

19 20

21

12

PD

AIN

AOUT

VSSa

IFIN

9

8

7

BO1 BO2 BO3 BO4 IO1 IO2

10

11

13

Figure 25 BLOCK DIAGRAM OF IC

– 25 –

QT-CD250H/W

IC1 VHiTA2104BN-1: FM /AM IF MPX. (TA2104BN)

FM RF OUT

FM RF

AM RF IN

FM OSC

222324 21 20

FM

OSC

AM

MIX

FMRE

FM

MIX

2 3 4 51 7 8 96

RF GND MIX OUT

FM RF ON

AM

LOW OUT

AM OSC

AM

OSC

BUFF

Vcc AM IF IN

OSC OUT

LEVEL

DET

AMIF

ST IND

ST

1/8

FMIF

FM IF IN GND AGC QUAD

FW

IF

BUFF

IFREQ

171819

IF

REQ

AN

DET

16

AF

BUFF

AGC

MPX IN

AF

FM

DET

10

VCC

DIYIDE

ST/MO

FM/AM

MUTE

11

R-OUT L-OUT

LPF2LPF1DET OUT

131415

DECODE

12

IC202 VHiTC9260P/-1: Electronic Volume (TC9260P)

Vss

1

OUT

2

IN

3

L-ch VOLUME

LD1

LD2

A-GND

CS

CK

4

L-ch

5

LATCH

6 7 8

DATA DECODER, STB GENERATOR

SHIFT REGRATER (13bit)

Figure 26 BLOCK DIAGRAM OF IC

V

DD

16

R-ch

LATCH

15 14 13 12

11

10

9

OUT

IN

LD1

LD2

A-GND

STB

DATA

R-ch VOLUME

– 26 –

IC802 VHiTC9457F2-1: Servo/Signal Control (TC9457F2) (1/4)

QT-CD250H/W

Pin No.

1* (OT5)S1 SEG1 Output Segment signal output to the LCD panel. 2 (OT6)S2 SEG2 Output Up to 72 segments in a matrix with COM1 to COM4 can be displayed. 3 (OT7)S3 SEG3 Output All of the S1 to S18 pins can be switched for output ports by a program. 4 (OT8)S4 SEG4 Output Also, the S15 to S18 pins each can be switched for I/O ports individually. 5 (OT9)S5 SEG5 Output When set for I/O ports, these pins become Nch open-drain output. 6* (OT10)S6 SEG6 Output Furthermore, the S11 to S14 and the P8-0 to P8-3 pins can be switched for 7* (OT11)S7 SEG7 Output use as CD signal (CLCK to IPF) input/output pins by a program. 8* (OT12)S8 SEG8 Output • CLCK: Subcodes P thru W data readout clock input/output. 9* (OT13)S9 SEG9 Output Selected between input and output by a command. 10* (OT14)S10 SEG10 Output • DATA: Subcodes P thru W data output. 11*

12*

13*

14*

15 (BCK/S15) SEG15 Output • IPF : Correction flag output. When AOUT is C2 correction output, it

16 (AOUT/S16) SEG16 Output

17 (MBOV/S17) NC Output

18 (IPF/S18) NC Output

19 MVDD MVDD1 Input/Output Power supply pins. 20 MVSS MVSS1 Input/Output Normally, apply a voltage of 4.5 to 5.5V to VDD.

21* (K0)P1-0 CD-FUNC Input 4-bit CMOS I/O ports. 22* (K1)P1-1 TUNER-FUNC Input These ports can be set for input or output bit for bit by a program. 23 (K2)P1-2 DOOR IN Input These pins can be pulled up to VDD or down to GND by program. 24 (K3)P1-3 PU IN Input Therefore, they can be used as key input pins. Also, when they are set for

25 26 (ADin1)P3-1 KEY 1 Input These ports can be set for input or output bit for bit by a program. 27 (ADin2)P3-2 KEY 2 Input The P3-0 to P4-0 pins serve dual purposes as analog inputs for the internal 28 (ADin3)P3-3 ADIN 3 Input 6-bit 4-channel A/D converters. 29 (BUZR/ NC Input The internal A/D converters can complete conversion in 6 instruction cycles

Port Name

(CLCK/OT15) S11 • LRCK: Channel clock (44.1kHz) output. (DATA/OT16) S12 Polarity can be inverted by a command. (SFSY/OT17) S13 • AOUT: Audio data output. (LRCK/OT18) S14 It outputs a high when buffer overflows.

P8-0 outputs a high indicating that correction is impossible.

P8-1

P8-2

P8-3

(DCREF)P3-0

ADin4)P4-0 using a successive approximation method. The required pins can be set for

Terminal Name

SEG11 Output • SFSY: Playback system frame sync signal output.

SEG12 Output It outputs a low for L channel and a high for R channel.

SEG13 Output • BCK : Bit clock (1.4122MHz) output.

SEG14 Output • MBOV: Buffer memory-over signal output.

CD POWER Output 5-bit CMOS I/O ports.

Input/Output

Function

In a backup state (when the CKSTP instruction executed), the device's current consumption is reduced to 1µA or less, allowing for the supply voltage to be lowered to 2.0V. The device is reset and the program starts from address 0 when a voltage of 2.7V or more is applied to this pin when it is at 0V (power-on reset).

I/O port, a change of state in this input can be used to clear the clock stop or wait mode.

A/D analog input bit for bit by a program. P3-0 can be set for reference voltage input, and the internal power supply (MVDD) can be used for this reference voltage. The P4-0 pin serves dual purposes as a buzzer output pin. The buzzer output can be selected from 8 frequencies, 0.625 to 3kHz. Each selected frequency can be output in one of four modes: continuous, single, 10Hz intermittent, and 10Hz intermittent at 1Hz interval. Whether or not to use and how to control the A/D converter and buzzer all can be set by a prograam.

In this unit, the terminal with asterisk mark (*) is (open) terminal which is not connected to the outside.

– 27 –

QT-CD250H/W

IC802 VHiTC9457F2-1: Servo/Signal Control (TC9457F2) (2/4)

Port Name Terminal NamePin No. Input/Output

30 (S12)P4-1 DI Input 3-bit CMOS I/O ports. 31* (SO/S11/ DO Output DI: Tuner Data Input pin.

SDA)P4-2 DO: Tuner Data Output pin.

32* (SCK/SCL) CL Output CL: Tuner/Volume Clock Output pin.

P4-3 These ports can be set for input or output bit for bit by a program.

These pins serve dual purposes as input or output pins for the serial interface circuit (SIO). The SIO is a 2-wire/3-wire compatible serial interface. 4 or 8 bits of serial data, beginning with the MSB or LSB, are serially output from the SO/SDA, pin at each clock edge on the SCK/SCL pin, and the data on S11 or S12 pin is serially input to the device. The serial clock (SCK/SCL) allows selection between the internal (450/225/ 150/75 kHz) and external sources and a selection of the active edge, rise or fall. Moreover, since the clock and data can be output via Nch open-drain outputs, variouts, device controls and communication between controllers can be greatly facilitated. When an SIO interrupt is enabled, an interrupt is generated at completion of SIO execution and the program jumps to address 4. All inputs to SIO contain a Schmitt trigger circuit.

33 TEST0 TEST0 Input Test mode control input pins. 34 TEST1 TEST1 Input The test mode is selected when these pins are set high and normal 35 TEST2 TEST2 Input operation is selected when they are low. 36 TEST3 TEST3 Input 37 TEST4 TEST4 Input 38 TEST5 TEST5 Input

39* (OT19)/HSO CE_(PLL) Output CE_(PLL): Tuner Chip Enable Input pin. 40* (OT20)SPCK STB_(VOL) Output STB_(VOL): Volume Storobe Input pin. 41* (OT21)SPDA P_MUTE Output P_MUTE: MUTE ON/OFF Output pin. 42* (OT22)COFS X-BASS Output X-BASS: X-BASS ON/OFF Output pin.

43* DOUT NC Input/Output Digital output pin. 44* SBSY NC Input/Output Subcode block sync output pin. It outputs a high at the S1 position when

subcode sync is detected.

45* SBOK NC Input/Output Subcode Q data CRCC determination result output pin. It outputs a high

when CRCC check is found OK.

46 VDD VDD1 Input/Output CD unit's digital block power supply pins. 47 VSS VSS1 Input/Output Normally, apply 5V to VDD.

When not using a CD (CD off), this power supply can be turned off, with only the controller power supply kept active, so that the contrller alone is operating. In this case, the CD off bit must be set to 1. When this bit is set to 1, pins 11 through 18 and pins 39 through 42 all are changed for output

ports if they have been set for CD control signal input/output pins. 48 P2VREF P2VREF Input/Output PLL block-2 VREF pin. 49 PDO PDO Input/Output This pin outputs a phase error between EFM and PLCK signals. 50 TMAX TMAX Input/Output TMAX detection result output pin.

Selected by command bit TMPS.

Longer than preset period: Outputs P2VREF.

Shorter than preset period: Low level (Vss).

Within preset period: High impedance. 51 LPFN LPFN Input/Output Inverted input of low-pass filter amp. 52 LPFO LPFO Input/Output Output of low-pass filter amp. 53 PVREF PVREF Input/Output PLL block VREF pin. 54 VCOF VCOF Input/Output VCO filter pin. 55 AVSS AVSS Input/Output Analog block ground pin. 56 SLCO SLCO Input/Output DAC output pin for data slice level generation. 57 RFI RFI Input/Output RF signal input pin. 58 AVDD AVDD Input/Output Analog block power supply pin. 59 RFCT RFCT Input/Output RFRP signal center level input pin. 60 RFZI RFZI Input/Output RFRP zero-cross input pin. 61 RFRP RFRP Input/Output RF ripple signal input pin. 62 FEI FEI Input/Output Focus error signal input pin.

Function

In this unit, the terminal with asterisk mark (*) is (open) terminal which is not connected to the outside.

– 28 –

IC802 VHiTC9457F2-1: Servo/Signal Control (TC9457F2) (3/4)

QT-CD250H/W

Port Name Terminal NamePin No. Input/Output

63 SBAD SBAD Input/Output Subbeam add signal input pin. 64 TEI TEI Input/Output Tracking error input pin.

This input is read when tracking servo is on. 65 TEZI TEZI Input/Output Tracking error zero-cross input pin. 66 FOO FOO Input/Output Focus equalizer output pin. 67 TRO TRO Input/Output Tracking equalizer output pin. 68 VREF VREF Input/Output Analog reference power supply pin. 69 RFGC RFGC Input/Output RF amplitude adjusting control signal output pin. It outputs 3-level PWM

signals. (PWM carrier = 88.2kHz) 70 TEBC TEBC Input/Output Tracking balance control signal output pin. It outputs 3-level PWM signals.

(PWM carrier = 88.2kHz) 71 FMO FMO Input/Output Focus equalizer output pin. It outputs 3-level PWM signals.

(PWM carrier = 88.2kHz) 72 DMO DMO Input/Output Disc equalizer output pin. It outputs 3-level PWM signals.

(PWM carrier = DSP block 88.2kHz, synchronized to PXO) 73 2VREF 2VREF Input/Output Analog reference power supply pin. (2 x VREF) 74 SEL SEL Input/Output APC circuit on/off signal output pin.

When laser is on, this pin goes to a high-impedance state when UHS = low

and outputs a high when UHS = high 75 VDD VDD2 Input/Output CD unit's digital block power supply pins.

76 VDD VSS2 Input/Output Normally, apply 5V to VDD.

When not using a CD (CD off), this power supply can be turned off, with

only the controller power supply kept active, so that the contrller alone is

operating. In this case, the CD off bit must be set to 1. When this bit is set

to 1, pins 11 through 18 and pins 39 through 42 all are changed for output

ports if they have been set for CD control signal input/output pins. 77 XVSS XVSS Input/Output CD's crystal oscillator power supply pins.

Normally, connect these pins to the power supply lines that are used in

common for the VDD and VSS pins. 78 XI XI Input/Output CD's crystal oscillator input/output pins.

79 XO XO Input/Output Normally, connect 16.934MHz here. This clock is used as the system clock

for the CD. After a system reset, it also is used as the system clock on the

controller side. 80 XVDD XVDD Input/Output CD's crystal oscillator input/output pins.

Normally, connect these pins to the power supply lines that are used in

common for the VDD and VSS pins. 81 DVSR DVSR Input/Output R-channel D/A converter unit ground pin. 82 RO RO Input/Output R-channel data forward output pin. 83 DVRR DVRR Input/Output R-channel reference voltage pin. 84 DVDD DVDD Input/Output D/A converter unit power supply pin. 85 DVRL DVRL Input/Output L-channel reference voltage pin. 86 LO LO Input/Output L-channel data forward output pin. 87 DVSL DVSL Input/Output L-channel D/A converter unit ground pin. 88 NC NC Input/Output NC pins. Normally, connect these pins to ground or leave them open.

89* NC/VPP NC Input/Output 90 /RST RESET Input Device's system reset signal input pin.

The device remains reset while RESET is held low and when RESET is

released back high, the CD unit becomes operational and the program

starts from address 0. Normally, a system reset is asserted when a voltage

of 2.7V or more is applied to VDD when it is at 0V (power-on reset).

Therefore, this pin must be pulled high when used for this purpose.

Function

In this unit, the terminal with asterisk mark (*) is (open) terminal which is not connected to the outside.

– 29 –

QT-CD250H/W

IC802 VHiTC9457F2-1: Servo/Signal Control (TC9457F2) (4/4)

Pin No.

91 /HOLD HOLD Input This pin is used to input a signal that requests or clears the hold mode.

92 INTR REMO-IN Input External interrupt input pin.

93* MXO MXO Input/Output Crystal oscillator pins for the controller. 94* MXI MXI Input/Output The oscillator clock is used as the timebase for the clock facility or as the

95 MVSS MVSS Input/Output Power supply pins. 96 MVDD MVDD Input/Output Normally, apply a voltage of 4.5 to 5.5V to VDD.

97 OT1 COM1 Output Common signal outputs to the LCD panel. 98 OT2 COM2 Output Up to 72 segments in a matrix with S1 to S18 can be displayed. 99 OT3 COM3 Output Three voltage levels MVDD, VEE (1/2 MVDD), and GND are output for 100 OT4 COM4 Output 83Hz period at 2ms intervals.

Port Name

Terminal Name

Input/Output

Function

Normally, use this pin for CD mode select signal input or battery detection signal input. There are two hold modes: clock stop mode (crystal oscillator turned off) and a wait mode (CPU stopped). These modes are entered by executing the CKSTP and WAIT instructions, respectively. The clock stop mode can be requested by a programmed input: low level detection on HOLD pin or forced execution, and can be cleared by detecting a high on the HOLD pin or a change of state in its input signal. When the CKSTP instruction is executed, the clock generator and the CPU stop operating and the device is placed in a memory backup state. During this state, the device's current consumption is reduced to 1µA or less. At the same time, the display output and CMOS output ports are automatically set low, and the Nch open-drain outputs are turned off. The wait mode is executed regardles of the input state on the HOLD pin, with the device's current consumption reduced. This mode is cleared by a change of state in the HOLD input.

When the interrupt facility is enabled and a pulse of 1.11 to 2.22µs in duration is applied to this pin, an interrupt is generated and the program jumps to address 1. Input logic and the active edge (rise or fall) can be selected for each interrupt input. Also, the internal 8-bit time clock can be chosen for this interrupt input, in which case it is possible to count pulses or generate an interrupt at a given pulse count (address 3).

controller's system clock. Connect a 4.5MHz or 75kHz crystal resonator to the MXO and MXI pins. Since these pins do not contain internal feedback resistors, etc, an amp resistor or output resistor must be added external to the chip. When using the clock generated by the CD unit's crystal oscillator for clocking the entire device operation, fix the MXI pin to the GND level. Oscillation is stopped by executing a CKSTP instruction. Select the crystal oscillator and control its operation by a program.

In a backup state (when the CKSTP instruction executed), the device's current consumption is reduced to 1µA or less, allowing for the supply voltage to be lowered to 2.0V. The device is reset and the program starts from address 0 when a voltage of 2.7V or more is applied to this pin when it is at 0V (power-on reset).

After a system reset and after deassertion of a clock stop instruction, the VEE voltage is output and the DISP OFF bit is set to 0 before common signals are output.

In this unit, the terminal with asterisk mark (*) is (open) terminal which is not connected to the outside.

– 30 –

PARTS GUIDE

QT-CD250H/W

“HOW TO ORDER REPLACEMENT PARTS”

To have your order filled promptly and correctly, please furnish the following information.

1. MODEL NUMBER 2. REF. No.

3. PART NO. 4. DESCRIPTION

MARK: SPARE PARTS-DELIVERY SECTION

Explanation of capacitors/resistors parts codes

Capacitors

VCC ....................... Ceramic type

VCK........................ Ceramic type

VCT........................ Semiconductor type

VC • • MF ............... Cylindrical type (without lead wire)

VC • • MN............... Cylindrical type (without lead wire)

VC • • TV................ Square type (without lead wire)

VC • • TQ ............... Square type (without lead wire)

VC • • CY ............... Square type (without lead wire)

VC • • CZ ............... Square type (without lead wire)

VC • • • • • • • • • J .. The 13th character represents capacity difference.

("J" ±5%, "K" ±10%, "M" ±20%, "N" ±30%, "C" ±0.25 pF, "D" ±0.5 pF, "Z" +80-20%.)

If there are no indications for the electrolytic capacitors, error is ±20%.

MODEL

QT-CD250H(S) QT-CD250W(S)

For U.S.A. only

Contact your nearest SHARP Parts Distributor to order.

For location of SHARP Parts Distributor, Please call Toll-Free; 1-800-BE-SHARP

Resistors

VRD ....................... Carbon-film type

VRS........................ Carbon-film type

VRN ....................... Metal-film type

VR • • MF ............... Cylindrical type (without lead wire)

VR • • MN............... Cylindrical type (without lead wire)

VR • • TV................ Square type (without lead wire)

VR • • TQ ............... Square type (without lead wire)

VR • • CY ............... Square type (without lead wire)

VR • • CZ ............... Square type (without lead wire)

VR • • • • • • • • • J .. The 13th character represents error.

("J" ±5%, "F" ±1%, "D" ±0.5%.)

If there are no indications for other parts, the resistors are ±5% carbon-film type.

NOTE:

Parts marked with “ ” are important for maintaining the safety of the set. Be sure to replace parts with specified ones for maintaining the safety and performance of the set.

QT-CD250H/W

PARTS CODE NO. PARTS CODE

PRICE

RANK

DESCRIPTIONNO.

INTEGRATED CIRCUITS

IC1 VHITA2104BN-1 J AQ FM/AM IF MPX.,TA2104BN IC51 VHILC72121/-1 J AN Electronic Tuning,LC72121 IC101 VHIBA3311L/-1 J AK REC./P.B.Equalizer Amp.,

IC201 VHITA8227P/-1 J AH Power Amp.,TA8227P IC202 VHITC9260P/-1 J AN Electronic Volume,TC9260P IC801 VHITA2109F/-1 J AL Servo Pre Amp.,TA2109F IC802 VHITC9457F2-1 J AZ Servo/Signal Control,TC9457F2 IC803 VHILA6541D/-1 J AW Focus/Tracking/Spin/Sled Driver,

BA3311L

LA6541D

TRANSISTORS

Q1 VSKTC3199GR-1 J AB Silicon,NPN,KTC3199 GR Q2 VSKRA102M//-1 J AC Digital,PNP,KRA102 M Q201,202 VSKTC3199GR-1 J AB Silicon,NPN,KTC3199 GR Q203 VSKTA1266GR-1 J AB Silicon,PNP,KTA1266 GR Q204 VSKTA1273Y/-1 J AE Silicon,PNP,KTA1273 Y Q205 VSKTC3199GR-1 J AB Silicon,NPN,KTC3199 GR Q206 VSKTA1046Y/-1 J AC Sillicon,PNP,KTA1046 Y Q207 VSKTC3199GR-1 J AB Silicon,NPN,KTC3199 GR Q209~212 VSKTC3199GR-1 J AB Silicon,NPN,KTC3199 GR Q351 VSKTC3199GR-1 J AB Silicon,NPN,KTC3199 GR Q801 VSKTA1266GR-1 J AB Silicon,PNP,KTA1266 GR Q802 VSKTA1273Y/-1 J AE Silicon,PNP,KTA1273 Y Q803 VSKRC107M//-1 J AC Digital,NPN,KRC107 M Q804 VSKTA1266GR-1 J AB Silicon,PNP,KTA1266 GR Q805 VSKRC107M//-1 J AC Digital,NPN,KRC107 M Q806 VSKTA1273Y/-1 J AE Silicon,PNP,KTA1273 Y

DIODES

D1 VHD1N4148//-1 J AA Silicon,1N4148 D101,102 VHD1N4148//-1 J AA Silicon,1N4148 D201~205 VHD1N4148//-1 J AA Silicon,1N4148 D651~654 VHD1N4004//-1 J AB Silicon,1N4004 D801~807 VHD1N4148//-1 J AA Silicon,1N4148 VD1,2 VHCKV1370NT-1 J AG Variable Capacitance,KV1370NT VD3 VHCKV1520NT-1 J AK Variable Capacitance,KV1520NT ZD201 VHEDZ5R1BSB-1 J AC Zener,5.1V,DZ5.1BSB ZD202 VHEDZ7R5BSB-1 J AB Zener,7.5V,DZ7.5BSB ZD203 VHEDZ2R4BSB-1 J AB Zener,2.4V,DZ2.4BSB

FILTERS

CF1 RFILF0006SJZZ J AE FM IF CF2 RFILF0004SJZZ J AG FM IF CF3 RFILA0003SJZZ J AF AM IF CF4 RFILF0005SJZZ J AF FM Detection F1 RFILR0001SJZZ J AD FM Band Pass Filter

TRANSFORMERS

T3 RCILI0008SJZZ J AC AM IF

! T651 RTRNP0038SJZZ J AR Power [QT-CD250H] ! T651 RTRNP0039SJZZ J AE Power [QT-CD250W]

COILS

COR1 RCORF0005SJZZ J AB Core COR801 RCORF0005SJZZ J AB Core L1 RCILR0004SJZZ J AE FM RF L2 RCILB0015SJZZ J AC FM Oscillation L3 RCILA0011SJZZ J AC AM Bar Antenna L4 RCILB0014SJZZ J AC AM Oscillation L51 VP-DH101K0000 J AB 100 µH,Choke L107,108 RCILC0001SJZZ J AB Choke Coil L301 RCILB0003SJZZ J AD Bias Oscillation L801 VP-DH221K0000 J AB 220 µH,Choke L803 VP-DH221K0000 J AB 220 µH,Choke L807 VP-DHR82K0000 J AE 0.82 µH,Choke

VARIABLE CAPACITOR

TC1 RTO-H1003SJZZ J AG Trimmer

PRICE

RANK

DESCRIPTION

VIBRATORS

X51 RCRSP0003SJZZ J AL Crystal,4.5 MHz X801 RCRM-0002SJZZ J AE Ceramic,16.93 MHz X802 RCRM-0003SJZZ J AK Ceramic,4.19 MHz

CAPACITORS

C1 VCCCPA1HH150J J AA 15 pF (CH),50V C2 VCKYPA1HB102K J AA 0.001 µF,50V C3 VCKZPA1HF103Z J AA 0.01 µF,50V C5 VCKYTV1EF104Z J AA 0.1 µF,25V C6 VCCCPA1HH220J J AA 22 pF (CH),50V C7,8 VCKYPA1HB102K J AA 0.001 µF,50V C9 VCKZPA1HF223Z J AA 0.022 µF,50V C10 VCCUPA1HJ8R0D J AA 8 pF,50V C11 VCCSPA1HL361J J AA 360 pF,50V C12 RC-GZA105AF1H J AB 1 µF,50V,Electrolytic C13 RC-GZA474AF1H J AA 0.47 µF,50V,Electrolytic C14 VCKZPA1HF473Z J AA 0.047 µF,50V C15 RC-GZA227AF1A J AB 220 µF,10V,Electrolytic C16 RC-GZA475AF1H J AB 4.7 µF,50V,Electrolytic C18 VCKYTV1HB102K J AA 0.001 µF,50V C19 RC-GZA225AF1H J AB 2.2 µF,50V,Electrolytic C20 VCKYPA1HB331K J AA 330 pF,50V C21 RC-GZA106AF1C J AB 10 µF,16V,Electrolytic C22 RC-GZA105AF1H J AB 1 µF,50V,Electrolytic C23 RC-GZA106AF1C J AB 10 µF,16V,Electrolytic C24 VCTYPA1CU104M J AB 0.1 µF,16V C25 VCKZPA1HF473Z J AA 0.047 µF,50V C26 VCTYPA1CU104M J AB 0.1 µF,16V C27 VCKYPA1HB102K J AA 0.001 µF,50V C29 VCKYPA1HB101K J AA 100 pF,50V C32 VCKYTV1EF104Z J AA 0.1 µF,25V C33,34 VCKYTV1HB221K J AA 220 pF,50V C51 VCCCPA1HH150J J AA 15 pF (CH),50V C52 VCCCPA1HH120J J AA 12 pF (CH),50V C53 RC-GZA107AF1A J AB 100 µF,10V,Electrolytic C54 VCKZPA1HF223Z J AA 0.022 µF,50V C55 RC-GZA225AF1H J AB 2.2 µF,50V,Electrolytic C56 VCKZPA1HF223Z J AA 0.022 µF,50V C57,58 VCKYTV1HB101K J AA 100 pF,50V C59 VCKZPA1HF103Z J AA 0.01 µF,50V C60 VCKYPA1HB222K J AA 0.0022 µF,50V C61 RC-GZA107AF1A J AB 100 µF,10V,Electrolytic C68 VCKYTV1HB221K J AA 220 pF,50V C71,72 VCQYKA1HM183K J AB 0.018 µF,50V,Mylar C73,74 RC-GZA105AF1H J AB 1 µF,50V,Electrolytic C75 VCKYPA1HB101K J AA 100 pF,50V C105,106 VCKYPA1HB182K J AB 0.0018µF,50V C107,108 VCKYPA1HB821K J AA 820 pF,50V C109,110 VCKYPA1HB271K J AA 270 pF,50V C111,112 VCKYPA1HB331K J AA 330 pF,50V C113,114 RC-GZA476AF1C J AB 47 µF,16V,Electrolytic C115,116 VCQYKA1HM183K J AB 0.018 µF,50V,Mylar C117,118 RC-GZA106AF1C J AB 10 µF,16V,Electrolytic C119 RC-GZA225AF1H J AB 2.2 µF,50V,Electrolytic C120 RC-GZA476AF1C J AB 47 µF,16V,Electrolytic C121,122 VCKZPA1HF103Z J AA 0.01 µF,50V C123 RC-GZA227AF1A J AB 220 µF,10V,Electrolytic C201 RC-GZA107AF1C J AB 100 µF,16V,Electrolytic C202 RC-GZA476AF1C J AB 47 µF,16V,Electrolytic C203 VCKZPA1HF103Z J AA 0.01 µF,50V C204 VCKZPA1HF223Z J AA 0.022 µF,50V C205,206 RC-GZA476AF1C J AB 47 µF,16V,Electrolytic C207 RC-GZA477AF1A J AC 470 µF,10V,Electrolytic C208 VCKZPA1HF223Z J AA 0.022 µF,50V C209 VCKZPA1HF103Z J AA 0.01 µF,50V C210 VCKZPA1HF223Z J AA 0.022 µF,50V C211,212 VCKZPA1HF473Z J AA 0.047 µF,50V C213,214 RC-GZA104AF1H J AB 0.1 µF,50V,Electrolytic C215,216 VCQYKA1HM393K J AB 0.039 µF,50V,Mylar C217,218 VCQYKA1HM392K J AA 0.0039 µF,50V,Mylar C219,220 RC-GZA104AF1H J AB 0.1 µF,50V,Electrolytic C221,222 VCKYPA1HB102K J AA 0.001 µF,50V C223,224 RC-GZA104AF1H J AB 0.1 µF,50V,Electrolytic C225 RC-GZA107AF1A J AB 100 µF,10V,Electrolytic C226 VCKZPA1HF223Z J AA 0.022 µF,50V C227 RC-GZW478AF1C J AF 4700 µF,16V,Electrolytic C229~232 RC-GZA104AF1H J AB 0.1 µF,50V,Electrolytic C233,234 RC-GZV108AF1A J AD 1000 µF,10V,Electrolytic

– 1 –

QT-CD250H/W

NO. PARTS CODE

C235~238 RC-GZA107AF1A J AB 100 µF,10V,Electrolytic C239,240 VCQYKA1HM104K J AB 0.1 µF,50V,Mylar C241,242 RC-GZA105AF1H J AB 1 µF,50V,Electrolytic C243,244 VCKYPA1HB331K J AA 330 pF,50V C245 RC-GZA105AF1H J AB 1 µF,50V,Electrolytic C246 RC-GZA106AF1C J AB 10 µF,16V,Electrolytic C247 RC-GZA227AF1A J AB 220 µF,10V,Electrolytic C249 VCKYPA1HB101K J AA 100 pF,50V C302 VCKZPA1HF223Z J AA 0.022 µF,50V C351 VCQYKA1HM222K J AA 0.0022 µF,50V,Mylar C352 RC-GZA107AF1A J AB 100 µF,10V,Electrolytic C353 VCQYKA1HM562K J AA 0.0056 µF,50V,Mylar C354 VCQYKA1HM223K J AB 0.022 µF,50V,Mylar C651~654 VCKZPA1HF223Z J AA 0.022 µF,50V C801 VCKZPA1HF103Z J AA 0.01 µF,50V C802 VCKZPA1HF223Z J AA 0.022 µF,50V C804 VCCCPA1HH2R0C J AA 2 pF (CH),50V C805 VCKYTV1EF223Z J AA 0.022 µF,25V C806 RC-GZA337AF1A J AB 330 µF,10V,Electrolytic C807 VCKZPA1HF473Z J AA 0.047 µF,50V C810 RC-GZA106AF1C J AB 10 µF,16V,Electrolytic C813 RC-GZA476AF1C J AB 47 µF,16V,Electrolytic C814 VCKZPA1HF473Z J AA 0.047 µF,50V C815 RC-GZA476AF1C J AB 47 µF,16V,Electrolytic C816 VCKZPA1HF223Z J AA 0.022 µF,50V C817 RC-GZA107AF1A J AB 100 µF,10V,Electrolytic C818 VCCSPA1HL560J J AA 56 pF,50V C819,820 VCQYKA1HM104K J AB 0.1 µF,50V,Mylar C821 RC-GZA107AF1A J AB 100 µF,10V,Electrolytic C822 VCKZPA1HF473Z J AA 0.047 µF,50V C823 VCKYTV1EF223Z J AA 0.022 µF,25V C824,825 RC-GZA476AF1C J AB 47 µF,16V,Electrolytic C826 VCCSPA1HL470J J AA 47 pF,50V C827 VCQYKA1HM153K J AB 0.015 µF,50V,Mylar C828 VCKYPA1HB272K J AA 0.0027 µF,50V C829 VCKYPA1HB472K J AB 0.0047 µF,50V C830 VCQYKA1HM103K J AA 0.01 µF,50V,Mylar C832 RC-GZA476AF1C J AB 47 µF,16V,Electrolytic C833 VCQYKA1HM333K J AB 0.033 µF,50V,Mylar C834,835 VCKYPA1HB471K J AA 470 pF,50V C836~839 VCQYKA1HM473K J AB 0.047 µF,50V,Mylar C840 VCKYTV1EF104Z J AA 0.1 µF,25V C841,842 VCKZPA1HF473Z J AA 0.047 µF,50V C843 RC-GZA476AF1C J AB 47 µF,16V,Electrolytic C844 RC-GZA107AF1A J AB 100 µF,10V,Electrolytic C845 VCKZPA1HF473Z J AA 0.047 µF,50V C846 RC-GZA105AF1H J AB 1 µF,50V,Electrolytic C847,848 RC-GZA226AF1C J AB 22 µF,16V,Electrolytic C849,850 VCKYPA1HB222K J AA 0.0022 µF,50V C851,852 RC-GZA335AF1H J AB 3.3 µF,50V,Electrolytic C853 VCKZPA1HF223Z J AA 0.022 µF,50V C854 VCKYPA1HB682K J AB 0.0068 µF,50V C856 VCKYPA1HB101K J AA 100 pF,50V C862 VCKYTV1EF104Z J AA 0.1 µF,25V C863 RC-GZA476AF1C J AB 47 µF,16V,Electrolytic C864 VCKYTV1EF104Z J AA 0.1 µF,25V C865 RC-GZA107AF1A J AB 100 µF,10V,Electrolytic C870 VCKYTV1HB101K J AA 100 pF,50V C872 VCKYTV1HB472K J AA 0.0047 µF,50V

PRICE

RANK

DESCRIPTION

RESISTORS

R1 VRD-ST2CD104J J AA 100 kohm,1/6W R2 VRD-ST2CD332J J AA 3.3 kohms,1/6W R3 VRD-ST2CD104J J AA 100 kohm,1/6W R4 VRD-ST2CD100J J AA 10 ohm,1/6W R5 VRD-ST2CD223J J AA 22 kohms,1/6W R6 VRD-ST2CD153J J AA 15 kohms,1/6W R7 VRD-ST2CD103J J AA 10 kohm,1/6W R8 VRD-ST2CD224J J AA 220 kohms,1/6W R10 VRD-ST2CD331J J AA 330 ohms,1/6W R12 VRD-ST2CD100J J AA 10 ohm,1/6W R13 VRD-ST2CD103J J AA 10 kohm,1/6W R14 VRS-TV2AB222J J AA 2.2 kohms,1/10W R15 VRD-ST2CD393J J AA 39 kohms,1/6W R16 VRD-ST2CD332J J AA 3.3 kohms,1/6W R17 VRD-ST2CD473J J AA 47 kohms,1/6W R18 VRD-ST2CD101J J AA 100 ohm,1/6W R20 VRS-TV2AB471J J AA 470 ohms,1/10W R51 VRD-ST2CD151J J AA 150 ohms,1/6W R52 VRD-ST2CD222J J AA 2.2 kohms,1/6W

NO.

R53 VRD-ST2CD472J J AA 4.7 kohms,1/6W R54 VRD-ST2CD103J J AA 10 kohm,1/6W R55 VRD-ST2CD563J J AA 56 kohms,1/6W R58~62 VRD-ST2CD102J J AA 1 kohm,1/6W R71,72 VRD-ST2CD472J J AA 4.7 kohms,1/6W R73,74 VRD-ST2CD332J J AA 3.3 kohms,1/6W R76 VRD-ST2CD821J J AA 820 ohms,1/6W R77 VRS-TV2AB332J J AA 3.3 kohms,1/10W R101,102 VRD-ST2CD331J J AA 330 ohms,1/6W R103,104 VRD-ST2CD123J J AA 12 kohms,1/6W R105,106 VRD-ST2CD153J J AA 15 kohms,1/6W R109,110 VRD-ST2CD121J J AA 120 ohms,1/6W R113,114 VRD-ST2CD822J J AA 8.2 kohms,1/6W R115~118 VRD-ST2CD392J J AA 3.9 kohms,1/6W R119,120 VRD-ST2CD332J J AA 3.3 kohms,1/6W R121,122 VRD-ST2CD272J J AA 2.7 kohms,1/6W R123,124 VRD-ST2CD332J J AA 3.3 kohms,1/6W R125 VRD-ST2CD684J J AA 680 kohms,1/6W R126 VRD-ST2CD101J J AA 100 ohm,1/6W R201 VRD-ST2CD122J J AA 1.2 kohms,1/6W R202 VRD-ST2CD103J J AA 10 kohm,1/6W R203 VRD-ST2CD271J J AA 270 ohms,1/6W R204 VRD-ST2CD222J J AA 2.2 kohms,1/6W R205 VRD-ST2CD472J J AA 4.7 kohms,1/6W R206,207 VRD-ST2CD561J J AA 560 ohms,1/6W R209,210 VRD-ST2CD102J J AA 1 kohm,1/6W R211,212 VRD-ST2CD473J J AA 47 kohms,1/6W R213 VRD-ST2CD101J J AA 100 ohm,1/6W R214~216 VRD-ST2CD102J J AA 1 kohm,1/6W R217,218 VRD-ST2CD822J J AA 8.2 kohms,1/6W R219,220 VRD-ST2CD224J J AA 220 kohms,1/6W R221~224 VRD-ST2CD472J J AA 4.7 kohms,1/6W R225 VRD-ST2CD104J J AA 100 kohm,1/6W R227,228 VRD-ST2CD121J J AA 120 ohms,1/6W R231,232 VRD-ST2CD121J J AA 120 ohms,1/6W R233,234 VRD-ST2CD222J J AA 2.2 kohms,1/6W R235,236 VRD-ST2CD473J J AA 47 kohms,1/6W R237,238 VRD-ST2CD272J J AA 2.7 kohms,1/6W R239,240 VRD-ST2CD222J J AA 2.2 kohms,1/6W R241,242 VRD-ST2CD103J J AA 10 kohm,1/6W R243,244 VRD-ST2CD564J J AA 560 kohms,1/6W R245,246 VRD-ST2CD562J J AA 5.6 kohms,1/6W R247,248 VRD-ST2CD561J J AA 560 ohms,1/6W R249 VRD-ST2CD221J J AA 220 ohms,1/6W R250 VRD-ST2CD474J J AA 470 kohms,1/6W R251,252 VRD-ST2CD223J J AA 22 kohms,1/6W R253 VRD-ST2CD392J J AA 3.9 kohms,1/6W R351 VRD-ST2CD101J J AA 100 ohm,1/6W R352 VRD-ST2CD151J J AA 150 ohms,1/6W R353 VRD-ST2CD333J J AA 33 kohms,1/6W R354 VRD-ST2CD4R7J J AA 4.7 ohms,1/6W R455,456 VRD-ST2CD153J J AA 15 kohms,1/6W R457,458 VRD-ST2CD102J J AA 1 kohm,1/6W R801 VRD-ST2EE220J J AA 22 ohms,1/4W R802 VRD-ST2CD222J J AA 2.2 kohms,1/6W R803 VRD-ST2CD823J J AA 82 kohms,1/6W R804 VRD-ST2CD683J J AA 68 kohms,1/6W R805 VRD-ST2CD393J J AA 39 kohms,1/6W R806 VRD-ST2CD272J J AA 2.7 kohms,1/6W R807 VRD-ST2CD102J J AA 1 kohm,1/6W R808 VRD-ST2CD101J J AA 100 ohm,1/6W R811 VRD-ST2CD223J J AA 22 kohms,1/6W R812 VRD-ST2CD102J J AA 1 kohm,1/6W R820 VRD-ST2CD473J J AA 47 kohms,1/6W R821 VRS-TV2AB102J J AA 1 kohm,1/10W R824,825 VRD-ST2CD103J J AA 10 kohm,1/6W R826 VRD-ST2CD224J J AA 220 kohms,1/6W R827 VRD-ST2CD153J J AA 15 kohms,1/6W R828 VRD-ST2CD103J J AA 10 kohm,1/6W R829 VRD-ST2CD332J J AA 3.3 kohms,1/6W R830 VRD-ST2CD103J J AA 10 kohm,1/6W R831~834 VRD-ST2CD332J J AA 3.3 kohms,1/6W R835,836 VRD-ST2CD271J J AA 270 ohms,1/6W R837,838 VRD-ST2CD103J J AA 10 kohm,1/6W R839 VRD-ST2CD473J J AA 47 kohms,1/6W R840 VRD-ST2EE100J J AA 10 ohm,1/4W R841 VRD-ST2CD562J J AA 5.6 kohms,1/6W R842 VRD-ST2CD223J J AA 22 kohms,1/6W R843 VRD-ST2CD472J J AA 4.7 kohms,1/6W R844,845 VRD-ST2CD223J J AA 22 kohms,1/6W R846 VRD-ST2CD472J J AA 4.7 kohms,1/6W R847 VRD-ST2CD562J J AA 5.6 kohms,1/6W

PRICE

RANK

DESCRIPTIONPARTS CODE

– 2 –

QT-CD250H/W

PARTS CODE NO. PARTS CODE

R848 VRD-ST2CD103J J AA 10 kohm,1/6W R849 VRD-ST2CD183J J AA 18 kohms,1/6W R850 VRD-ST2CD152J J AA 1.5 kohms,1/6W R851~853 VRD-ST2CD222J J AA 2.2 kohms,1/6W R854 VRD-ST2CD101J J AA 100 ohm,1/6W R855 VRD-ST2CD183J J AA 18 kohms,1/6W R856 VRD-ST2CD153J J AA 15 kohms,1/6W R857 VRD-ST2CD473J J AA 47 kohms,1/6W R859 VRD-ST2CD473J J AA 47 kohms,1/6W R860 VRD-ST2CD472J J AA 4.7 kohms,1/6W R861 VRD-ST2CD103J J AA 10 kohm,1/6W R862 VRD-ST2CD473J J AA 47 kohms,1/6W R863 VRS-TV2AB182J J AA 1.8 kohms,1/10W R864 VRS-TV2AB105J J AA 1 Mohm,1/10W R865 VRD-ST2CD473J J AA 47 kohms,1/6W R866 VRD-ST2CD332J J AA 3.3 kohms,1/6W R867~873 VRD-ST2CD472J J AA 4.7 kohms,1/6W R875~878 VRD-ST2CD103J J AA 10 kohm,1/6W R879 VRD-ST2CD472J J AA 4.7 kohms,1/6W R880 VRD-ST2CD223J J AA 22 kohms,1/6W [QT-CD250H

R882~895 VRD-ST2CD473J J AA 47 kohms,1/6W R896,897 VRS-TV2AB473J J AA 47 kohms,1/10W R898~901 VRD-ST2CD473J J AA 47 kohms,1/6W

PRICE

RANK

DESCRIPTIONNO.

Only]

OTHER CIRCUITRY PARTS

BI801/CNS801 QCNWN0206SJZZ J AB Connector Ass’y,8/8Pin BI802/CNS802 QCNWN0207SJZZ J AB Connector Ass’y,5/5Pin BI803/CNS803 QCNWN0208SJZZ J AB Connector Ass’y,6/6Pin CNP101 QCNCW001DSJZZ J AC Plug,4Pin CNP201 QCNCW001CSJZZ J AC Plug,3Pin CNP602 QCNCW002CSJZZ J AD Plug,3Pin CNP801 QCNCM010DAWZZ J Plug,4Pin CNP803 QCNCM932FAFZZ J AC Plug,6Pin CNS101 QCNWN0205SJZZ J AD Connector Ass’y,4Pin CNS201 QCNWN0213SJZZ J AG Connector Ass’y,3Pin CNS602 QCNWN0216SJZZ J AC Connector Ass’y,3Pin CNS801 QCNCW010DAWZZ J Connector Ass’y,4Pin

! F651 QFS-C132ASJNA J AH Fuse,T1.25A L 250V

FW801 QCNWN0169SJZZ J AD Flat Wire,12Pin FW802 QCNWN0168SJZZ J AD Flat Wire,11Pin HPJ201 QJAKM0001SJZZ J AG Jack,Headphone LCD801 RV-LX0009SJZZ J AM LCD Display M601(240-6) 9GD192112346 J AX Motor with Pulley [Tape] M701 RMOTV0409AFM1 J AN Motor with Gear [Sled] M702 RMOTV0408AFM3 J AN Motor with Chassis [Spindle]

! SO651 QSOCA0006SJZZ J AB AC Input Socket

SP201,202 VSPA010PB024S J AC Speaker,Woofer SW102 QSW-S0001SJZZ J AD Switch,Slide Type

SW201 QSW-S0008SJZZ J AG Switch,Slide Type SW601(240-7) 9GD640101149 J Switch,Leaf Type [Tape Main]

! SW651 QSW-S0004SJZZ J AK Switch,Slide Type [Voltage

SW702 QSW-F9001AWZZ J AE Switch,Push Type [Pickup In] SW801 QSW-K0001SJZZ J AC Switch,Key Type

SW802 QSW-K0001SJZZ J AC Switch,Key Type SW803 QSW-K0001SJZZ J AC Switch,Key Type [Repeat/Band]

SW804 QSW-K0001SJZZ J AC Switch,Key Type SW805 QSW-K0001SJZZ J AC Switch,Key Type SW806 QSW-K0001SJZZ J AC Switch,Key Type SW807 QSW-K0001SJZZ J AC Switch,Key Type [Volume Up]

SW808 QSW-K0001SJZZ J AC Switch,Key Type [Volume Down] SW809 QSW-K0001SJZZ J AC Switch,Key Type [X-BASS] SW810 QSW-F0001SJZZ J AD Switch,Leaf [CD Lid] UN801 VHLN64H380A-1 J AK Remote Sensor,N64H380A

[Record/Playback] [Function Selector]

Selector] [QT-CD250W Only]

[Play/Pause/Tuning Up] [Stop/Tuning Down]

[Tuner/Memory] [Cue/Preset Up] [Review/Preset Down]

CD MECHANISM PARTS

301 NGERH0586AFZZ J AC Gear,Middle 302 NGERH0587AFZZ J AC Gear,Drive 303 MLEVP1054AFZZ J AC Rail,Guide 304 NSFTM0291AFFW J AD Shaft,Guide 305 PCUSG0613AFZZ J AC Cushion

PRICE

RANK

! 306 DCTRH8003SJ01 J BC Pickup Unit Ass’y

701 XBSSD26P06000 J AA Screw,ø2.6×6mm 702 XHBSD20P05000 J AA Screw,ø2×5mm 703 XBBSD20P03000 J AA Screw,ø2×3mm 704 LX-WZ1070AFZZ J AA Washer,ø1.5×ø3.8×0.25mm M701 RMOTV0409AFM1 J AN Motor with Gear [Sled] M702 RMOTV0408AFM3 J AN Motor with Chassis [Spindle] SW702 QSW-F9001AWZZ J AE Switch,Push Type [Pickup In]

DESCRIPTION

CABINET PARTS

201 GCABA1046SJM1 J AV Front Cabinet [QT-CD250H] 201 GCABA1047SJM1 J Front Cabinet [QT-CD250W] 202 GCABB1046SJSA J AR Top Cabinet 203 GFTAT1005SJSB J CD Lid 204 CHLDM1001SJ01 J AG Stabilizer Ass’y 204- 1 PMAGF0002AWZZ J AE Magnet 204- 2 LHLDM1001SJZZ J AC Holder,Stabilizer 204- 3 PSHEZ0003SJZZ J AG Sheet,Stabilizer Holder 205 GFTAB1009SJSB J AD Battery Compartment Lid,Rear 206 GFTAC0004SJSB J Cassette Holder 207 GCOVA1002SJSA J AB Cover,Remote Sensor 208 HPNLC1052SJSA J AB Panel,Control 209 HDECQ0038SJSA J AD Ring,Speaker 210 LHLDZ1028SJZZ J AC Holder,CD Control PWB 211 JBTN-0013SJSB J AB Button,Pause 212 JBTN-0014SJSB J AB Button,Stop/Eject 213 JBTN-0015SJSB J AB Button,Fast Forward 214 JBTN-0016SJSB J AB Button,Rewind 215 JBTN-0017SJSB J AB Button,Play 216 JBTN-0018SJSB J AB Button,Record 217 JHNDP1003SJSB J AG Handle 218 JKNBK0026SJSA J AB Knob,X-BASS/Volume 219 JKNBZ0043SJSA J AD Knob,Function 220 JKNBZ0044SJSA J AB Button,CD Stop 221 JKNBZ0045SJSA J AC Button,CD Play/Pause 222 CGERH0001SJ01 J AF Damper Gear Ass’y 223 LANGK0001SJFW J AC Bracket,Button 224 LANGZ0004SJZA J Bracket,Battery 225 LHLDA1001SJZZ J AC Holder,AM Bar Antenna 226 LHLDW1001SJZZ J AD Nylon Band 227 RCORF0002SJZZ J AC Core 228 LHLDZ1027SJZZ J AB Holder,LCD 229 MSPRC0004SJFN J AB Spring,Battery,230 MSPRC0005SJFD J AB Spring,Battery,+/231 MSPRD0011SJFD J AC Spring,CD Lid 232 MSPRD0009SJFD J AB Spring,Cassette Holder Up 233 MSPRZ0002SJFD J AB Spring,Rod Antenna 234 LHLDZ1029SJZZ J AD Holder,CD Switch PWB 235 HDECQ0039SJSA J AD Decoration Plate,LCD Display 236 PSLDM3005SJFW J Bracket,Shield 237 QANTR0001SJZZ J AG Rod Antenna 238 MSPRP0002SJFW J AC Bracket,Record 239 TSPC-0143SJZZ J AC Label,Specifications

239 TSPC-0144SJZZ J AC Label,Specifications

239 TSPC-0152SJZZ J Label,Specifications 239 TSPC-0171SJZZ J Label,Specifications 240 CMECB0003SJ01 J AZ Tape Mechanism Ass’y

240- 1 9GD192104309 J AR Pinch Roller Arm Ass’y 240- 2 9GD19210703 J AE Belt,REW/FF 240- 3 9GD19210938 J Belt,Main 240- 4 9GD62140116 J AT Head,Record/Playback 240- 5 9GD62071008 J AQ Head,Erase 240- 5 9GD62091010 J AM Head,Erase 240- 6(M601) 9GD192112346 J AX Motor with Pulley [Tape] 240- 7(SW601) 9GD640101149 J Switch,Leaf Type [Tape Main] 241 MSPRC0003SJFE J AF Spring,Battery,242 PRDAR0029SJZZ J AC Heat Sink,Q206 243 PRDAR0030SJZZ J Heat Sink,IC201 [QT-CD250H] 243 PRDAR0032SJFW J AE Heat Sink,IC201 [QT-CD250W] 244 GFTAB1010SJSA J AD Battery Compartment Lid,Bottom

! 245 QFSHD0001AWZZ J AB Holder,Fuse

246 PCOVW1011SJZZ J AC Cover,Voltage Selector Switch 247 PCOVW1002SJZZ J AM Cover,AC Input Socket

248 PSLDM3006SJFW J Bracket,Power Transformer

[QT-CD250H for Europe] [QT-CD250H for Australia/New

Zealand/U.K.] [QT-CD250W] [QTCD-250H for Philippines]

[QT-CD250W Only]

– 3 –

QT-CD250H/W

NO. PARTS CODE

249 JKNBZ0042SJSA J AB Button,CD Eject 250 MLEVP0003SJZZ J AB Lever,CD Eject 251 CHLDZ1003SJZZ J Holder,Damper Gear 252 PSPAI0001SJZZ J AB Washer,Power Transformer 253 TLABS0003SJZZ J AD Label,Class 3A 254 TLABS0004SJZZ J AC Label,Laser 255 QCNWN0223SJZZ J AB Lead Wire with Lug 601 XUBSD30P18000 J Screw,ø3×18mm 602 XUBSD25P10000 J AB Screw,ø2.5×10mm 603 XUPSD25P08000 J AB Screw,ø3×8mm 604 XUBSD30P10000 J AA Screw,ø3×10mm 605 XUBSD30P12000 J AA Screw,ø3×12mm 606 XUPSD25P08000 J AB Screw,ø2.5×8mm 607 XWHSD28-08120 J AB Washer,ø2.8×ø12×0.8mm 610 XHPSD20P03000 J AA Screw,ø2×3mm

PRICE

RANK

DESCRIPTION

ACCESSORIES/PACKING PARTS

! QACCA0001SJ00 J AS AC Power Supply Cord ! QACCA0001SJ00 J AS AC Power Supply Cord ! QACCB0001SJ00 J AW AC Power Supply Cord ! QACCE0001SJZZ J AH AC Power Supply Cord ! QACCE0001SJZZ J AH AC Power Supply Cord

! QACCL0002AW00 J AN AC Power Supply Cord ! QPLGA0250AFZZ J AF Adaptor,AC Plug [W for Central

! QPLGA0253AFZZ J AE Adaptor,AC Plug

SPAKA0036SJZZ J AG Packing Add.,Left/Right SPAKC0124SJZZ J AK Packing Case [QT-CD250H] SPAKC0125SJZZ J Packing Case [QT-CD250W] SPAKZ0013SJZZ J AB Top Pad,Packing Case SSAKH0001SJZZ J AC Polyethylene Bag,Unit SSAKK0001SJZZ J AD Polyethylene Bag,Accessories

SSAKK0001SJZZ J AD Polyethylene Bag,Accessories

SSAKK0002SJZZ J AC Polyethylene Bag,AC Power

TGANE0001SJZZ J AM Warranty Card [H for Australia/ TGANE0002SJ12 J G-Card [H for Philippines Only]

TINSE0044SJZZ J Operation Manual

TINSZ0061SJZZ J AG Operation Manual [H for Europe] TINSZ0062SJZZ J Operation Manual [QT-CD250W] TLABE0067SJZZ J Label,Bar Code,Packing Case

TLABG0001SJZZ J AB Label,Hong Kong TLABG0023SJZZ J AB Label,Rated Input TLABR1118SJZZ J Label,Bar Code,Packing Case TLABS0008SJZZ J Caution Label [QT-CD250H for TLABZ0009SJZZ J AD Label,C [W for Syria/Central and TLABZ0010SJZZ J AD Label,Made in China

TLABZ0011SJZZ J AD Label,SHARP [W for Syria/Chile/

[W for Saudi Arabia] [H for Philippines] [W for Hong Kong] [H for Europe] [W Except for Saudi Arabia/

Hong Kong] [H for Australia/New Zealand] and South America/Chile/Peru/

Bolivia/U.A.E. Only] [W for Saudi Arabia Only]

[W for Central and South America/Saudi Arabia/Chile/ Peru/Bolivia/U.A.E. Only]

[H for Australia/New Zealand/ Philippines Only]

Supply Cord [W for Saudi Arabia/Hong Kong Only]

Supply Cord [H for Australia/New Zealand/ Philippines Only]

New Zealand Only]

[H for Australia/New Zealand/ Philippines]

[QT-CD250H] [W for Hong Kong Only] [W for Hong Kong Only] [QT-CD250W] East Europe Only] South America] [W for Central and South

America Only] Peru/Bolivia/U.A.E. Only]

NO.

TLABZ0012SJZZ J AC Label,SHARP [W for Syria/Chile/ TLABZ0015SJZZ J AC Label,VJ No.,Packing Case

TLABZ0019SJZZ J AC Label,Made in China

TLABZ0046SJZZ J Label,Feature [QT-CD250H] RRMCG0023SJSA J AU Remote Control

GFTAB1012SJ0V J Battery Lid,Remote Control

PRICE

RANK

DESCRIPTIONPARTS CODE

Peru/Bolivia/U.A.E. Only]

[W for Egypt/Kuwait/Bahrain/ Cyprus/Jordan/Reunion/Saudi Arabia Only]

ACCESSORIES/PACKING PARTS (For U.K.)

1 SSAKH0001SJZZ J AC Polyethylene Bag,Unit 2 TINSE0043SJZZ J AC Operation Manual

! 3 QACCB0001SJ00 J AW AC Power Supply Cord

4 SPAKA0036SJZZ J AG Packing Add.,Left/Right 5 RRMCG0023SJSA J AU Remote Control 5- 1 GFTAB1012SJ0V J Battery Lid,Remote Control 6 SPAKC0124SJZZ J AK Packing Case 7 SSAKK0002SJZZ J AC Polyethylene Bag,AC Power

8 TLABZ0046SJZZ J Label,Feature 9 SPAKZ0013SJZZ J AB Top Pad,Packing Case 10 TLABE0067SJZZ J Label,Bar Code,Packing Case 11 TLABZ0015SJZZ J AC Label,VJ No.,Packing Case 12 SSAKK0001SJZZ J AD Polyethylene Bag,Accessories 13 TINSE0049SJZZ J Quick Guide [U.K. Only] 14 TCADN0001SJZZ J AE Warranty Card [U.K. Only]

Supply Cord

P.W.B. ASSEMBLY (Not Replacement Item)

PWB-A1~7 DCEK-0008SJ06 J — Main/CD Control/Power/Switch/

PWB-A1~7 DCEK-0008SJ09 J — Main/CD Control/Power/Switch/

PWB-B QPWBF3895AFZZ J AC CD Motor (PWB Only)

Terminal A/Terminal B/Washer (Combined Ass’y) [QT-CD250H]

Terminal A/Terminal B/Washer (Combined Ass’y) [QT-CD250W]

OTHER SERVICE PARTS

UDSKA0004AFZZ J AZ CD Pickup Lens Cleaner

– 4 –

QT-CD250H/W

306

A

304

701

B

704

302

C

702

301

D

303

703x2

E

M702

F

305

M701

G

305x2

SW702

H

PWB-B

1

23456

Figure 5 CD MECHANISM EXPLODED VIEW

– 5 –

QT-CD250H/W

215

202

604x4

236

603x4

SP201

217

214

213

212

235

PWB-A1

211

251

602

232

PWB-A7

PWB-A4

605x2

606

222

250

601x2

604x4

253

234

249

604x7

237

233

Silicon

Grease

242

255

231

604

SW810

603

Q206

604

252

QT-CD250W Only

604x2

246

605x2

607x3

605x2

252

248

239

606

225

227

205

602x3

252

T651

252

203

204

204-1

204-2

204-3

254

CD MECHANISM

SO651

247

605x2

224

206

223

218 219

210

216

603x2

Silicon

Grease

243

228

A

240(240-1, 240-2, 240-3, 240-4, 240-5

B

C

D

E

240-6(M601), 240-7(SW601))

238

610

TAPE MECHANISM

PWB-A2

603x6

LCD801

208

220

221

207

201

F

G

H

209

244

605x3

209

230

SW651

604x2

PWB-A5

226

SP202

Note: Only the unit and consumale parts are supplied as parts supply for the Tape mechanism.

1

23456

Figure 6 CABINET EXPLODED VIEW

– 6 –

241x2

241

229

PWB-A3

245x2

604x4

BELT CONNECTION

Main Belt

Flywheel

FF/REW Belt

PWB-A6

Motor M601

REW/FF Clutch

QT-CD250H/W

PACKING METHOD (QT-CD250H FOR U.K. ONLY)

• Setting position of switches and knobs

Tape Mechanism Control STOP STATE FUNCTION SELECTOR OFF/TAPE

1. Polyethylene Bag, Unit SSAKH0001SJZZ

2. Operation Manual TiNSE0043SJZZ

3. AC Power Supply Cord QACCB0001SJ00

4. Packing Add., Left/Right SPAKA0036SJZZ

5. Remote Control RRMCG0023SJSA

6. Packing Case SPAKC0124SJZZ

7. Polyethylene Bag, AC Power Supply Cord SSAKK0002SJZZ

8. Feature Label TLABZ0046SJZZ

9. Top Pad, Packing Case SPAKZ0013SJZZ

10. Bar Code Label TLABE0067SJZZ

11. VJ No. Label TLABZ0015SJZZ

12. Polyethylene Bag, Accessories SSAKK0001SJZZ

13. Quick Guide TiNSE0049SJZZ

14. Warranty Card TCADN0001SJZZ

13

2,14

12

1

3

Battery Compartment

4

L

7

8

FRONT

9

FRONT

5

R

11

FRONT

10

6

– 7 –

— M E M O —

QT-CD250H/W

– 8 –

QT-CD250H/W

No part of this publication may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, electronic, mechanical, photocopying, recording, or otherwise, without prior written permission of the publisher.

SHARP CORPORATION Communication Systems Group Quality & Reliability Control Center Higashihiroshima, Hiroshima 739-0192, Japan

Printed in Japan

A0003-4303NS•HA•C

SG • SK • SA • SZ • EX

Sharp QTCD-250-H, QTCD-250-W Service manual

Specifications and Main Features

Frequently Asked Questions

User Manual