Sharp XL-3000V service manual Disassembly, Led Pwb

Page 10

XL-3000V

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 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.

(A1) x2

Top Cabinet

ø3 x10mm

 

 

Fan Motor

Rear Panel

 

(A3) x3

ø3 x12mm

(A4) x2 ø3 x8mm

(A1) x3 ø3 x10mm

 

Rear Panel

(A1) x2

(A2) x4

Terminal PWB

ø3 x10mm

 

STEP

REMOVAL

 

PROCEDURE

FIGURE

 

 

 

 

 

 

1

Rear Panel/

1.

Screw

(A1) x7

10-1

 

Terminal PWB/

2.

Socket

(A2) x4

 

 

Fan Motor

3.

Screw

(A3) x4

10-1,2

 

 

4.

Screw

(A4) x2

10-1

 

 

 

 

 

 

2

Top Cabinet/

1.

Screw

(B1) x2

10-2

 

Video PWB

2.

Hook

(B2) x5

 

 

 

3.

Flat Cable

(B3) x2

 

 

 

4.

Socket

(B4) x9

 

 

 

5.

Screw

(B5) x3

11-1

 

 

6.

Socket

(B6) x1

10-2

 

 

 

 

 

 

3

Tuner PWB

1.

Screw

(C1) x2

11-1

 

 

2.

Socket

(C2) x1

 

 

 

 

 

 

 

4

Power PWB

1.

Socket

(D1) x2

11-1

 

 

2.

Hook

(D2) x1

 

 

 

 

 

 

 

5

Main PWB

1.

Socket

(E1) x1

11-1

 

 

2.

Screw

(E2) x8

 

 

 

 

 

 

 

6

Display PWB

1.

Screw

(F1) x4

11-2

 

 

2.

Hook

(F2) x4

 

 

 

 

 

 

 

7

CD Mechanism

1.

Screw

(G1) x4

11-2

 

 

 

 

 

 

8

Gear Box

1.

Screw

(H1) x1

11-2

 

 

2.

Holder

(H2) x1

 

 

 

3.

Lever

(H3) x1

 

 

 

4.

Screw

(H4) x3

 

 

 

5.

Lever

(H5) x1

 

 

 

 

 

 

 

9

LED PWB

1.

Screw

(J1) x1

11-2

 

 

 

 

 

 

Note:

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

Figure 10-1

Top Cabinet

HooK (B2) x2

 

 

(B4) x1

 

Hook

CD Mechanism

 

(B2) x3

 

 

(B4) x4

Top Cabinet

(B6) x1

Up

(B3) x1

Slide

(B4) x2

 

 

 

Hook

 

 

Bottom Cabinet

 

 

(A3) x1

 

 

ø3 x10mm

 

 

Lug

Power

 

Bottom Cabinet

PWB

 

Video PWB

 

(B4) x1

 

 

(B3) x1

 

 

(B1) x2

 

 

ø2.5 x8mm

 

 

(B4) x1

Main PWB

Figure 10-2

– 10 –

Image 10
Contents Contents Model XL-3000VAC Power Cord and Plug Adaptor Voltage SelectionSpecifications Display Names of PartsFront panel 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 Perform steps 1,2 and 7 of the disassembly method to remove Removing and Reinstalling the Main PartsHow to remove the CD lid See Fig CD Mechanism Section See FigFM Detection AdjustmentSetting the Test Mode FM Mute LevelTest Video CD IC15VBEX Video PWB-DChecking the black-and-white level Disc Checking SettingChecking of vector scope waveform Video OUTTuner Test Mode Test Outline of tuner radio test mode Turning on the test modeDetails of tuner test mode Timer test Mode Test Electronic volume Test Mode TestLCD Test Mode Test Key input diagnosis Test Mode Test Volume UP ON-OFF FF/PRESET UP ON-OFFCD PLAY/PAUSE/TUNING UP ON-OFF Volume Down ON-OFFFOCUS/TRACKING Switch PWBCD Motor PWB SPIN/SLED DriverMain PWB Power PWB-BRminal PWBDisplay PWB Lamp PWBTuner PWB Video CD Decoder IC10VIC15V IC16VBuffer AMP IC11VVideo CD Encoder Video PWB-D Terminal PWB-A4From Tuner PWB-A2 CNS7 FromFM Signal Video SignalCD Signal VolumeSERVO/SIGNAL Control CD Motor PWB-C CD LID Motor DriverSchematic Diagram 5/10 Main PWB-A11/2 AM Signal FM SignalTuner PWB-A2 CNP307Lamp PWB-A7 Display PWB-A3System Schematic Diagram 8/10 ROM 256Kx16 Video PWB-DIC10V Video CD DecoderXL-3000V Video SignalCD Signal Buffer AMPTo 15 are waveform numbers shown From Display MERAssis PWB-A3 SpindleOhms AntennaTo Main PWB-A1 To Video To MainPink IC14V Video PWB-D TOP ViewVideo PWB-D Bottom View IC16VWaveforms of CD Circuit When the CD does not function TroubleshootingParts Code UDSKA0004AFZZ Sled Motor HF ErrorFailure Operating FailureLaser failure Focus failureSpindle motor clv servo failure Focus servo sawtooth wave failureDMO TEI Tezi HF errorNo sound RFISled motor operation failure Track search failureSled servo failure Function Table of IC IC401 VHiLC75342M-1 Function/Volume Equalizer LC75342MPin No Port Name Function Test VSS Pin No Terminal Name Input/Output Function IC701 RH-iX0038SJZZ System Microcomputer/FL driver IX0038SJ SEG25-SEG0IC801 VHiTA2109F/-1Servo Pre Amp. TA2109F Uhso HSO IC802 VHiTC9462F/-1 Servo/Signal Control TC9462F 1/3Pin No Port Name Input/Output Function 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-IN-A CH1-OUT-ACH1-OUT-B 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 IC14V IC10V RH-IX0041SJZZIC11V VHINJM4565M-1 IC15VRC-GZA227AF1C VCKYPA1HB102KVCKYPA1HF223Z RC-GZW228AF1VRC-GZA227AF1A RC-EZD107AF1AVCKYCY1EB104K VCKYCY1EB563KR607VRS-CY1JB682J R358VRS-CY1JB822J R359VRS-CY1JB182J R360VRS-CY1JB472JR393VRS-CY1JB102J R395VRD-ST2CD473J R621VRS-CY1JB223JCNP801V QCNCW010MSJZZ QCNCM998DAFZZQCNCM037ESJZZ QCNCW007RSJZZTSPC-0221SJZZ LX-WZ9006SJZZCPNLS1006SJ01 HSY042SPK07302 PWB-A7 PWB-A3 PWB-A6PWB-A5 PWB-A8Copyright 2001 by Sharp Corporation