Sharp QT-CD110H Service Manual Download Page 10 | Manualshive

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QT-CD111H/110H

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Figure 10 BLOCK DIAGRAM (1/2)

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37

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32

11

8
4
2

21

25

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~

+5V

FOCUS COIL

TRACKING COIL

PICKUP UNIT

3

10

19

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25

1

2

17

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18

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Q804

+5V

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CL, DAT, SELIAL CONTROL

CONSTANT

VOLTAGE

REGULATOR

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M

M

MOTOR

SLIDE

MOTOR

SPIN

1

2

3

4

9

~

~

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14

XIN

XOUT

K1

CD

OPERATION

KEY

SW771~SW774

LID

SW761

OPEN/CLOSE

~

~

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27

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31

30

60

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CD LCD

LCD701

PICKUP IN

PU-IN SW

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13

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SL+

SL–

+7.4V

(CD)

1

2

3

4

5

6

7

GND (A)

R-CH

L-CH

GND (D)

POWER GND

MUTE

+7.4V (D)

SECTION

MAIN

TO

VVDD

XIN

XOUT

VDD

XVDD

EFMO

EFMIN

CLV+

CLV–

V/P

HFL

TES

TOFF

JP–

JP+

TGL

RES. CQCK. COIN

SQOUT. RWC. WRQ

LCHO

LC78622E

IC802

SERVO/SIGNAL

CONTROL

16.93MHz

XL801

SLI

SLC

CV+

JP–

DRF
CE
DAT
CL
CLK
THLD/DEF

SLD

SLEO

SPO

FD
TO

SL+

SL–

F

E

FIN1

FIN2

64

62

+5V

Q805

VCC1

LDO

LASER

DRIVER

SERVO AMP.

LA9240M

IC801

22

2

+7.4V

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5

6

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13

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IC804

BA5914FP

FOCUS/TRACKING

/SPIN/SLIDE

DRIVER

M701

M702

SW702

RES

SL–

DRF

WRQ

RESET

VLC3

VDD

+5V

(D)

4MHz

X701

IC701

IX0105AW

SYSTEM

MICROCOMPUTER

COM0

SEG1

SEG4

COM3

CD LID

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Summary of Contents for QT-CD110H

Page 1: ...of user safety the set should be restored to its original condition and only parts identical to those specified should be used QT CD111H QT CD110H SERVICE MANUAL SHARP CORPORATION No S6844QTCD111H This document has been published to be used for after sales service only The contents are subject to change without notice Note for users in UK Recording and playback of any material may require consent ...

Page 2: ...sure 111H For UK 111H Except for UK 110H Laser Diode Properties Material GaAIAs Wavelength 780 nm Emission Duration continuous Laser Output max 0 6 mW LASER KLASSE 1 LUOKAN 1 LASERLAITE KLASS 1 LASERAPPARAT 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 BE...

Page 3: ... flitter 0 25 WRMS 111H For UK Motor DC 12 V electric governor Bias system AC bias Erase system Magnet erase Compact disc player Disc Compact disc Signal readout Non contact 3 beam semi conductor laser pickup Audio channels 2 Quantization 16 bit linear quantization Filter 4 tims oversampling digital filter D A converter 1 bit D A converter Wow and flutter Unmeasurable less than 0 001 W peak Specif...

Page 4: ...ject Button 11 CD Play Indicator 12 CD Track Number Indicator 13 CD Repeat Indicator 14 Volume Control 15 Stand by On Function Selector Switch 16 Extra Bass Button X BASS 17 CD Track Down Review Button 18 CD Track Up Cue Button 19 CD Stop Button 20 CD Play Repeat Button 21 FM Telescopic Rod Aerial 22 Headphones Socket 23 Battery Compartment 24 AC Power Input Socket 1 2 3 4 5 6 7 8 9 10 11 12 13 14...

Page 5: ...ly plug from the wall outlet before starting to disassemble the unit 3 Take off nylon bands or wire holders where they need be removed when disassembling the unit After servicing the unit be sure to rearrange the leads where they were before disassembling 4 Take suffcient care on static electricity of integrated circuits and other circuits when servicing STEP REMOVAL PROCEDURE FIGURE Figure 5 4 Fi...

Page 6: ...chanism How to remove the pickup See Fig 6 1 Remove the screws A1 x 2 pcs to remove the shaft A2 x1 pc 2 Remove the stop washer A3 x1 pc to remove the gear A4 x 1 pc 3 Remove the pickup Figure 6 REMOVING AND REINSTALLING THE MAIN PARTS A1 x2 2 6 x6mm Stop Washer A3 x1 CD Mechanism Gear A4 x1 Shaft A2 x1 Pickup ...

Page 7: ...ad resistance 8 ohms AM IF RF IF T3 Input Antenna Output Pin 19 of IC2 Band Coverage fL L4 Input Antenna fH TC4 Output Speaker Tracking 600 kHz L3 Terminal CNP201 1 400 kHz TC3 Load resistance 8 ohms Test Stage Specified Value Adjusting Point Instrument Connection VCO Frequency Specified Value Instrument Connection VR1 76 kHz 200 Hz Pin 13 pin 21 and ground of IC2 Adjusting Point Note After prepar...

Page 8: ...ile in the stop mode the laser will simply be turned on at first b If the laser is lit and the PLAY button is pressed again playback will start from the current pickup position c If the STOP button is pressed playback will stop When pressed again the laser will be turned off a Each time the PAUSE button is pressed during playback the tracking servo will be turned on or off Note If the PLAY button ...

Page 9: ...ithout any symbol is an ohm resistor The resistor designated Fusible is a fuse type resistor Capacitor To indicate the unit of capacitor a symbol P is used this symbolPmeansmicro micro faradandtheunitofthecapacitor withoutsuchasymbolismicrofarad Astoelectrolyticcapacitor the expression capacitance withstand voltage is used CH TH RH UJ Temperature compensation ML Mylar type P P Polypropylene type T...

Page 10: ... 24 27 28 31 30 60 41 44 33 22 23 37 CD LCD LCD701 PICKUP IN PU IN SW 19 13 14 SL SL 7 4V CD 1 2 3 4 5 6 7 GND A R CH L CH GND D POWER GND MUTE 7 4V D SECTION MAIN TO VVDD XIN XOUT VDD XVDD EFMO EFMIN CLV CLV V P HFL TES TOFF JP JP TGL RES CQCK COIN SQOUT RWC WRQ LCHO LC78622E IC802 SERVO SIGNAL CONTROL 16 93MHz XL801 SLI SLC CV JP DRF CE DAT CL CLK THLD DEF SLD SLEO SPO FD TO SL SL F E FIN1 FIN2 ...

Page 11: ...P501 L CH SPEAKERS SP502 R CH SO651 SW201 C POWER FUNCTION AM FM SELECT B FM B SW201 D POWER FUNCTION RADIO TAPE REC POWER FUNCTION SW201 A B CD EC PB SW102 A F P B REC IC101 EQULIZER AMP BA331IL REC REC P B P B P B L R L R SW102 REC PB B D REC PB SW102 C E L CH REC PB HEAD R CH AUDIO GND 7 4V B2 DIGITAL GND POWER GND FROM CD SECTION R CH ERASE HEAD SW102 H REC PB BIAS OSC C201 L201 SW102 G REC PB...

Page 12: ... SQOUT WRQ PU IN DIGITAL GND 5V B B B B B SEG12 SEG11 SEG10 SEG9 SEG8 SEG7 SEG6 SEG5 SEG4 SEG3 SEG2 SEG1 SEG0 P00 P01 P02 P10 POWER IN D1 MUTE D4 COCK D3 RES D5 COIN D6 RWC D7 SL D8 SL DFR P20 SQOUT P21 WRQ P22 PU IN P23 RESET XIN XOUT VSS VDD XCOUT XCIN AVSS VREF P30 P31 P32 P33 P3P40 AIN5 SIMUKE AIN6 KIDSW AIN7 VLC3 VLC2 VLC1 COM3 COM2 COM1 COM0 SEG16 VCC1 LDS LDD BH1 PH1 LF2 VR REFI VCC2 FSS DR...

Page 13: ... 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 15 16 33 34 33 34 35 36 37 38 39 41 40 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 47 48 0V 3 5V 3 5V 2 5V 2 5V 7 4V 7 4V 0V 0V 2 7V 3 8V 3 2V 3 5V 3 5V 2 5V 0V 0V 0V 0V 2 5V 2 5V 3 8V 3 2V 0V 4 8V 7 4V 5 5V B AUDIO GND POWER GND DIGITAL GND DIGITAL 7 4V L CH R CH B B B B B B B LD VR PD GND FO FO TR TR PD VR LD E K C B A ...

Page 14: ... 022 C21 0 022 C20 0 022 T3 CF2 C26 22 16 SW201 A CD R16 10K R13 3 3K R14 3 3K R15 10K C33 1 50 C34 1 50 R38 1 8K 0 015 C32 C31 0 015 R17 68 C36 0 022 R121 1K D103 1N4148 R122 1K C123 100 10 C121 0 01 C122 0 01 D101 1N4148 D102 1N4148 D202 1N4148 R120 3 3K R119 3 3K C119 2 2 50 C120 47 16 R125 680K R118 3 9K C115 0 018 ML C117 10 16 R117 3 9K R115 3 9K R113 8 2K C118 10 16 R116 3 9K R114 8 2K IC10...

Page 15: ... 15 50 C303 0 15 50 3 2 1 1 2 3 4 5 6 7 8 9 10 11 12 13 M 1 2 3 1 2 3 1 2 2 R228 120 J201 HEADPHONES R225 100K R223 4 7K Q201 2SC1815GR Q202 2SC1815GR R224 4 7K R304 1 8K R302 1 8K B B B BATTERYS DC12V D size UM SUM 1 R20 or HP2 battery x 8 B B B B R CH L CH SPEAKERS VOLUME 241 7 MAIN 241 6 TAPE MOTOR TERMINAL PWB A3 X BASS R P TAPE AM FM AUTO CD CD FM AUTO AM TAPE OUT IN X VCO 76kHz AC INPUT MAIN...

Page 16: ...I801 C227 L301 CNP602 IC203 SW774 SW773 SW772 STOP SW771 PLAY VR201 1 7 29 30 8 14 15 21 22 28 IC804 C807 C35 C27 C34 C15 C14 C29 C11 C46 C36 C22 C24 C25 C23 C37 C8 C5 C6 C33 C32 C17 C20 C26 C21 C837 C845 C850 C840 C802 C801 C803 C804 C806 C814 C812 C816 C832 C741 Q740 Q805 CF1 C38 C10 C39 C9 C4 C28 C31 C2 C16 C838 C839 C847 C841 C833 C851 C810 C815 C811 C849 C809 C808 C813 C805 C831 C830 C822 C74...

Page 17: ...D BK 4 3 2 1 BR COLOR TABLE RD R OR YL GR BL VL GY WH W BK PK BROWN RED ORANGE YELLOW GREEN BLUE VIOLET GRAY WHITE BLACK PINK T601 POWER TRANSFORMER 236 211 BATTERYS DC12V D SIZE UM SUM 1 R20 or HP2 battery 8 YL TAPE MOTOR 241 6 M601 TAPE MAIN 241 7 SW601 CNS201 1 2 3 WH BK RD 2 1 SPENDLE MOTOR PICKUP IN M701 SLED MOTOR M702 CNP803 SW702 1 2 3 4 5 6 5 4 3 2 1 7 8 6 5 4 3 2 1 PICK UP UNIT CD MOTOR ...

Page 18: ...10 0 V JP 0 5ms 10 0 V JP 0 5ms 0 50 V JP 0 5ms 1 00 V TE 6 7 9 8 6 7 9 8 50ms 10 0 V JP CUE 50ms 10 0 V JP 50ms 0 50 V JP 50ms 1 00 V TE 6 7 9 8 6 7 9 8 11 10 11 10 12 12 REVIEW 50ms 10 0 V JP 50ms 10 0 V JP 50ms 0 50 V JP 50ms 1 00 V TE 0 5ms 10 0 V JP 0 5ms 10 0 V JP 0 5ms 0 50 V JP 0 5ms 1 00 V TE PLAY 20ms 1 00 V SPO NORMAL DISC TN0 01 20ms 2 00 V CLV PLAY TCD 712 140mm TN0 01 50ms 1 00 V SPO...

Page 19: ... amount of isopropyl alcohol Do not touch the lens with the bare hand See if the pick up is in the pick up in SW702 position If the items mentioned above are OK check the main microcomputer IC701 Yes Yes The CD function will not work The CD operating keys don t work Check the CD DPS microcomputer IC701 power supply 4 19 MHz and 16 93 MHz clock and reset terminal Check the waveform of SCK SO DATA a...

Page 20: ...0 5µsec DIV DC When playing back the disc Waveform in case of normal play back 3 2 1 4 0 5s 1 00 V IC801 16 FD 0 5s 10 0 V IC801 12 CLV 0 5s 10 0 V IC801 54 DRF 0 5s 2 00 V IC801 7 TE Check the tracking system Check the tracking system Check waveform of IC801 pin 7 TE Check the periphery of IC801 pin 8 to pin 15 and IC804 to BI801 CNS801 Tracking servo is inoperative The waveform shown in Fig 20 3...

Page 21: ...nd 10 Error Yes Check PDO waveform Fig 21 Checking the VCO PLL system Play operation is performed when disc exits Yes Although HF waveform is normal TOC data cannot be read Figure 21 2 3 0 5s 1 00 V IC802 3 PDO 0 5s 1 00 V IC801 16 FD As VCO freque ncy is locked at 4 32 M Hz voltage of PDO rises and stabili zes Stop Play Check IC802 pins 37and 40 Check the periphery of IC803 OPAMP Abnomal Usually ...

Page 22: ...mand 17 P20 DRF Input Output Used to receive 4 bits at a time 18 P21 SQOUT Input Output Used to receive 4 bits at a time 19 P22 WRQ Input Output Used to receive 4 bits at a time 20 P23 PU IN Input Output Used to receive 4 bits at a time 21 RESET Input Output Reset pulse input output terminal When a reset is caused by the watch dog timer an L level will be output The output is an N channel open dra...

Page 23: ...r Supply Cord QACCB0001SJ00 2 Polyethylene Bag Unit SSAKH0001SJZZ 3 Packing Add Left Right SPAKA0001SJZZ 4 Packing Case SPAKC0005SJZZ 5 Operation Manual TiNSE0002SJZZ 6 Polyethylene Bag AC Power Supply Cord SSAKK0002SJZZ 7 Warranty Card TCADN0001SJZZ 8 Feature Label TLABE0004SJZZ 9 Label Bar Code TLABE0001SJZZ 10 Polyethylene Bag Accessories SSAKK0001SJZZ FRONT FRONT 2 5 7 8 11 9 3 10 4 6 1 ...

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