Sharp XL-3000V service manual Display PWB-A3, Lamp PWB-A7, System

Page 32

XL-3000V

A

B

C

D

E

F

G

H

DISPLAY PWB-A3

SW727

FUNCTION

SW726

REW

R706

PRESET DOWN

3.9K

1

2

3

4

5

6

7

8

9

10

11

12

13

14

SW718

VOLUME DOWN

SW725

R718

CD STOP

R707

SW713

1.5K

TUNING DOWN

2.7K

VOLUME UP

2.5V

2.2K

R708

SW712

R719

SEG0

2.5V

2.5V

2.5V

2.5V

2.5V

2.5V

2.5V

2.5V

2.5V

5V2

SW722

R710

1.2K

CD PLAY/ PAUSE

BASS/TREBLE

2.7K

TUNING UP

2.47V

2.47V

100

SEG1

SEG2

SEG3

SEG4

SEG5

SEG6

SEG7

SEG8

SEG9

99

98

97

96

95

94

93

92

91

R720A

1

COM3

SW721

SW711 1.2K

2

COM2

R711

FF

R720B

2.47V

3

COM1

MEMORY/SET

1.2K

PRESET UP

1.2K

2.47V

R727

4

COM0

47K

0V 5

VLC3

R729

1.7V

6

VLC2

LAMP PWB-A7

+B

47K

3.25V 7

VLC1

R723 47K

+B

5V 8

VDD

SW709

R728 1K

2.49V 9

OSC2

C703

ON/

R702

2.47V 10 OSC1

STAND-BY

0.1

10K

X701

0V 11

VSS

24V

8MHz

2.24V

5V

32.768kHz

X702

12

XI

2.47V 13 XO

GND

C701

C702

22P

(CH)

0V

14

MMOD

LMP701

SW710

22P(CH)

0V

15

VREF–

SYSTEM

CD LID

OPEN/CLOSE

R795

R731 1K

5V

16

CLID_SW

47K

R732 1K

5V 17 KEY1

R733 1K

5V 18 KEY2

CFW701B

R734 1K

3

2

5V 19 MODEL

1

R735

0V

20 CLID_PRO

1K

0V 21 MOT_DEC

R722 10K

R725 10K

CLID PRO

R782 1K

DIVD

ACK

BUSY

RESET

CE

OUTCLID

3

2

1

4.9V 22

DO

CL

DOVD

R721

0V

23

VSM

10K

4.9V 24 VREF+

+B

0V 25 DI

CFW701A

5V 26

27

28

29

30

31

32

33

34

35

TO

PWBPOWER-B

CNS707

CNW707

R799

1K

L702

R738

1K

R739

1K

0V

0V

4.9V

4.9V

0V

5V

4.9V

0V R765

2.2∝H

C705

1KR740

1KR762

1KR761

R7631K

R7601K

4.9VR741 1K

0.01

R744

1K

F-1P26

CNP707

4

1

D_GND

1

P_CONT

2

2

3

3

USWD_5R6V

+B

D722

D723

+B

1N4148

1N4148

2

D720 1N4148

Q701

C711 3.3/50

5V

+B

REMOTE

100

+B

0.4V

CNP652

R7A9

R7A0

R7B0

P265H-

1

C712

0.01

0.4V

120

ZD701 DZ3.3BSB

1

2

3

1

3.3K

1K

R7A5

10K

10K

RX701

R7A3

MAINTO

A1(1/2)-PWB

CNS652

R7A6

KRC102 M

R7A2 100K

Q702

0.4V

SENSOR

C713C715 10/16100/10

C710 0.01

D721 1N4148

Q708

1K

2

4.8V

KTC3199 GR

1.1V

R7A7

0V

3

0.4V

R7A4

1K

0V

Q703

R7A1

R7A8

KTC3199 GR

C714

1K

82

560P

+B

5V

KTA1266 GR 5V

5V

R778 47K

5V

R798

Q709

R779

4.2V

4.7K

KRC102 M

47K

R780 47K

R796

2

3

1K

R797 0.1V

4.5V

R781

2.2K

1

0V

47K

Q707

R783

KTA1266 GR

+B

33K

+B

24.5V

24.5V

Q706

+B

R792

C704

KRC102 M

0.022

47K

2

3

23.7V

R793

0.1V

4.1V

10K

1

0V

+B

• NOTES ON SCHEMATIC DIAGRAM can be found on page 19.

1

2

3

4

5

6

Figure 32 SCHEMATIC DIAGRAM (7/10)

– 32 –

Image 32

Contents Contents Model XL-3000VAC Power Cord and Plug Adaptor Voltage SelectionSpecifications Names of Parts Front panelDisplay Rear panelRemote control Setting the Clock System Connections Setting the AC voltage selector Connecting the AC power lead Listening to a CD Disassembly LED PWBPWB Removing and Reinstalling the Main Parts How to remove the CD lid See FigPerform steps 1,2 and 7 of the disassembly method to remove CD Mechanism Section See FigAdjustment Setting the Test ModeFM Detection FM Mute LevelIC15V BEXTest Video CD Video PWB-DDisc Checking Setting Checking of vector scope waveformChecking the black-and-white level Video OUTDetails of tuner test mode Turning on the test modeTuner Test Mode Test Outline of tuner radio test mode LCD Test Mode Test Electronic volume Test Mode TestTimer test Mode Test Key input diagnosis Test Mode Test FF/PRESET UP ON-OFF CD PLAY/PAUSE/TUNING UP ON-OFFVolume UP ON-OFF Volume Down ON-OFFSwitch PWB CD Motor PWBFOCUS/TRACKING SPIN/SLED DriverPower PWB-B RminalMain PWB PWBDisplay PWB Lamp PWBTuner PWB IC10V IC15VVideo CD Decoder IC16VVideo CD Encoder IC11VBuffer AMP Terminal PWB-A4 FromVideo PWB-D Tuner PWB-A2 CNS7 FromVideo Signal CD SignalFM Signal VolumeSERVO/SIGNAL Control CD Motor PWB-C CD LID Motor DriverSchematic Diagram 5/10 AM Signal FM Signal Tuner PWB-A2Main PWB-A11/2 CNP307System Display PWB-A3Lamp PWB-A7 Schematic Diagram 8/10 Video PWB-D IC10VROM 256Kx16 Video CD DecoderVideo Signal CD SignalXL-3000V Buffer AMPTo 15 are waveform numbers shown MER AssisFrom Display PWB-A3 SpindleTo Main PWB-A1 AntennaOhms Pink To MainTo Video Video PWB-D TOP View Video PWB-D Bottom ViewIC14V IC16VWaveforms of CD Circuit Parts Code UDSKA0004AFZZ TroubleshootingWhen the CD does not function HF Error FailureSled Motor Operating FailureLaser failure Focus failureDMO Focus servo sawtooth wave failureSpindle motor clv servo failure HF error No soundTEI Tezi RFISled servo failure Track search failureSled motor operation failure Pin No Port Name Function IC401 VHiLC75342M-1 Function/Volume Equalizer LC75342MFunction Table of IC Test VSS Pin No Terminal Name Input/Output Function IC701 RH-iX0038SJZZ System Microcomputer/FL driver IX0038SJ SEG25-SEG0IC801 VHiTA2109F/-1Servo Pre Amp. TA2109F Pin No Port Name Input/Output Function IC802 VHiTC9462F/-1 Servo/Signal Control TC9462F 1/3Uhso HSO IC802 VHiTC9462F/-1 Servo/Signal Control TC9462F 2/3 IC802 VHiTC9462F/-1 Servo/Signal Control TC9462F 3/3 IC802 VHiTC9462F/-1 Servo/Signal Control TC9462FCH1-OUT-A CH1-OUT-BCH1-IN-A CH1-IN-BIC14V VHiES3883F/-1 Video CD Encoder ES3883F 1/2 IC14V VHiES3883F/-1 Video CD Encoder ES3883F 2/2 ICV14 VHiES3883F/-1 Video CD Encoder ES3883F IC16V RH-iX0025SJZZ D-RAM 256Kx16 IX0025SJIC15V VHiES3880F/-1 Video CD Decoder ES3880F ES3880F Aclk AOUT/SELPLL0 AtclkLCD701 RV-LX0012SJZZ LCD Display MemoryFor U.S.A. only IC10V RH-IX0041SJZZ IC11V VHINJM4565M-1IC14V IC15VVCKYPA1HB102K VCKYPA1HF223ZRC-GZA227AF1C RC-GZW228AF1VRC-EZD107AF1A VCKYCY1EB104KRC-GZA227AF1A VCKYCY1EB563KR358VRS-CY1JB822J R359VRS-CY1JB182J R360VRS-CY1JB472J R393VRS-CY1JB102J R395VRD-ST2CD473JR607VRS-CY1JB682J R621VRS-CY1JB223JQCNCM998DAFZZ QCNCM037ESJZZCNP801V QCNCW010MSJZZ QCNCW007RSJZZLX-WZ9006SJZZ CPNLS1006SJ01TSPC-0221SJZZ HSY042SPK07302 PWB-A6 PWB-A5PWB-A7 PWB-A3 PWB-A8Copyright 2001 by Sharp Corporation