Sharp DV-L88S, DV-L88W Service manual

SERVICE MANUAL PORTABLE DVD VIDEO PLAYER

DV-L88S/S(H) DV-L88W/W(A)

SERVICE MANUAL

S31R1DV-L88S/

PORTABLE DVD VIDEO PLAYER

D V-L88S/S(H)

1. IMPORTANT SAFEGUARDS AND PRECAUTIONS ........................................................................ 2

2. FEATURES........................................................................................................................................ 4

3. SPECIFICATIONS ............................................................................................................................. 4

4. PART NAMES.................................................................................................................................... 6

MODELS DV-L88S/S(H)/W/W(A)

5. DISASSEMBLY METHOD ................................................................................................................. 7

6. ADJUSTMENT METHOD ................................................................................................................ 10

7. TEST MODE .................................................................................................................................... 17

8. TROUBLESHOOTING..................................................................................................................... 20

9. BLOCK DIAGRAMS......................................................................................................................... 24

10. SCHEMATIC DIAGRAMS................................................................................................................ 32

11. PRINTED WIRING BOARD ASSEMBLIES ..................................................................................... 52

12. REPLACEMENT PARTS LIST ........................................................................................................ 63

13. PACKING OF THE SET................................................................................................................... 78

NTSC/PAL

MODELS

In the interests of user-safety (Required by safety regulations in some countries) the set should be restored to its original condition and only parts identical to those specified be used.

CONTENTS

D V-L88W/W(A)

Page

SHARP CORPORATION

DV-L88S/S(H)

Note:

This Player can be used only where the power supply is AC 110V-240V,

50/60Hz. It cannot be used elsewhere.

CAUTION:

USE OF CONTROLS OR ADJUSTMENTS OR PERFORMANCE OF

PROCEDURES OTHER THAN THOSE SPECIFIED HEREIN MAY

RESULT IN HAZARDOUS RADIATION EXPOSURE.

AS THE LASER BEAM USED IN THIS PLAYER IS HARMFUL TO THE

EYES, DO NOT ATTEMPT TO DISASSEMBLE THE CABINET. REFER

SERVICING TO QUALIFIED PERSONNEL ONLY.

WARNING:

TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK, DO NOT

EXPOSE THIS PLAYER TO RAIN OR MOISTURE.

TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK, AND

ANNOYING INTERFERENCE, USE THE RECOMMENDED

ACCESSORIES ONLY.

Laser Diode Properties

for DVD disc Play for CD, Video CD disc Play

Material: AlGaInP Material: AlGaAs

Wave length: 650 nm Wave length: 780 nm

Emission duration: Continuous Emission duration: Continuous

Laser output: Max. 0.7 mW

• This Player is classified as a CLASS 1 LASER product.

• “CLASS 1 LASER PRODUCT” label is located at the bottom of the

Player.

• The laser caution labels are located at the bottom of the Player and

printed in the disc compartment.

• This product contains a low power laser device.

To ensure continued safety do not remove any cover or attempt to gain

access to the inside of the product. Refer all servicing to qualified

personnel.

CAUTION : VISIBLE AND INVISIBLE LASER RADIATION WHEN OPEN

AND INTERLOCKS DEFEATED. DO NOT STARE INTO BEAM OR VIEW

DIRECTLY WITH OPTICAL INSTRUMENT.

VARNING : SYNLIG OCH OSYNLIG LASERSTRÅLNING NÄR DENNA DEL

ÄR ÖPPNAD OCH SPÄRRAR ÄR URKOPPLADE. STIRRA EJ IN I

STRÅLEN OCH BETRAKTA EJ STRÅLEN GENOM OPTISKA INSTRUMENT.

VARO : AVATTAESSA JA SUOJALUKITUS OHITETTAESSA OLET ALTTIINA

NÄKYVÄÄ JA NÄKYMÄTÖN LASERSÄTEILYLLE. ÄLÄ TUIJOTA SÄTEESEEN

ÄLÄKÄ KATSO SITÄ OPTISEN LAITTEEN LÄPI.

ADVARSEL : SYNLIG OG USYNLIG LASERSTRÅLNING NÅR DEKSEL ÅPNES

OG SIKKERHEDSLÅS BRYTES.STIRR IKKE INN I STRÅLEN ELLER SE

DIREKTE MED OPTISKE INSTRUMENTER.

ADVARSEL : SYNLIG OG USYNLIG LASERSTRÅLNING VED ÅBNING, NÅR

SIKKERHEDSAFBRYDERE ER UDE AF FUNKTION. SE IKKE IND I

STRÅLENHELLER IKKE MED OPTISKE INSTRUMENTER.

CLASS 1

LASER PRODUCT

CAUTION

VISIBLE AND INVISIBLE LASER RADIATION

WHEN OPEN AND INTERLOCKS DEFEATED.

DO NOT STARE INTO BEAM OR VIEW

DIRECTLY WITH OPTICAL INSTRUMENT.

DO NOT DEFEAT THESE INTERLOCKS.

WARNING

DV-L88W/W(A)

1. IMPORTANT SAFEGUARDS AND PRECAUTIONS

åå

åCAUTION

åå

BEFORE BATTERY DESTROY

The RBRCTM Seal SHARP participates in the RBRCTM* Nickel-Cadmium Battery Recycling Program in the United States. The RBRCTM Seal on our battery pack contained in our product indicates that SHARP is voluntarily participating in an industry program to collect and recycle these batteries. The RBRCTM program provides you with a convenient alternative to placing spent Nickel-Cadmium battery packs into the trash or municipal waste stream, which is illegal in some areas. At the end of their useful life, the Nickel-Cadmium battery can be dropped off at the nearest collection center for recycling. For information on the nearest collection center, call 1-800-8-BATTERY or your local recycling center. If you are located outside the United States, contact your local authorities for information concerning proper disposal and/or recycling of this battery. SHARP's involvement in this program is part of our commitent to protecting our environment and conserving natural resources. [Footnote] *RBRC

TM is a trademark of the Rechargeable Battery Recycling Corporation.

DV-L88S/S(H) DV-L88W/W(A)

ËË

Ë NICKEL-METAL HYDRIDE BATTERY

ËË ËË

Ë LITHIUM or LITHIUM-ION BATTERY

ËË ËË

Ë SEALED LEAD BATTERY

ËË

Battery disposal Contains the above Rechargeable Battery. must be recycled or disposed of properly. Remove the Battery from the products and contact Federal or State Environmental Agencies for information on recycling and disposal options.

DV-L88S/S(H) DV-L88W/W(A)

2. FEATURES

This Player can play back DVD video discs, VIDEO CDs and Audio CDs.

• CD-R/CD-RW recorded in MP3 file format can also be played.

8" LCD Screen and Stereo Speakers

• A big 8" LCD screen and built-in stereo speakers provide exciting DVD viewing, even without connecting to a TV.

2-WAY Power Supply

• A 2-way power supply allows operation using the supplied AC adapter for indoor play, or the battery pack (optional accessory) for outdoor play.

Compact, Lightweight Design

• Your Player is designed to go along just about anywhere.

High-Resolution Images, High-Quality Sound

• A high-resolution 336,960-pixel LCD screen produces images of outstanding quality.

• DIGITAL GAMMA correction and DIGITAL SUPER PICTURE provide more realistic image detail.

• VIRTUAL DOLBY (*1QSURROUND) ensures richer sound from two built-in speakers.

AV input/output, optical digital output jack equipped as standard

• An optical digital output jack (which doubles as the phones jack) can be used to output a stream of *2Dolby Digital 5.1 channel audio, *3DTS digital audio and MPEG audio. Connecting a Dolby Digital/DTS/MPEG Audio digital surround processor or amplifier to this jack creates an environment of amazingly powerful surround sound.

• The AV input/output jack can be used to connect a VCR or camcorder to your Player. Or you can use these jacks to connect to a TV for big-screen viewing.

*1QSURROUNDTM is a trademark of QSound Labs, Inc. *2Manufactured under license from Dolby Laboratories. "Dolby" and the double-D symbol ( ) are trademarks of

Dolby Laboratories.

*3"DTS" and "DTS Digital Surround" are trademarks of Digital Theater Systems, Inc.

3. SPECIFICATIONS

Product: Portable DVD Video Player Models: DV-L88S/S(H)/W/W(A)

Signal System: NTSC/PAL

Supported Disc Types: DV-L88S/S(H): DVD (Region Number 2, ALL), VIDEO CD, Audio CD,

CD-R, CD-RW

DV-L88W/W(A):DVD (Southeast Asia: Region Number 3, ALL/Australia

and New Zealand: Region Number 4, ALL), VIDEO CD, Audio CD, CD-R, CD-RW

Video Input/Output: Input/Output Jack: Pin jack × 1

Input/Output Levels: 1Vp-p (75Ω)

S-Video Input/Output: Y Input/Output Level: 1Vp-p (75Ω)

C Input/Output Level: 0.286Vp-p (75Ω) Input/Output Jack: S connector × 1

Audio Input/Output: Input/Output Jack: Pin jack × 1

Input/Output Levels: 1.7Vrms (1kHz, 0dB)

Digital Audio Interface: Optical Digital Output: Mini jack (shared with Headphones Output)

Audio Output: 0.8W + 0.8W

Headphones Output: Output Jack: Mini jack (stereo) (shared with Optical Digital Output)

Display: Screen Size: 8 inches (99.2 (H) × 176.4 (W) mm)

Type: Transmissive TN liquid crystal panel Drive: TFT (thin transistor) active matrix Pixels: 336,960 (234 (H) × 480 (W) × 3) Effective Pixel Rate: 99.99% minimum

Speakers: Two 28mm round speakers

Light Source: Internal (fluorescent)

Video Signal: Horizontal Resolution: 500 lines (DVD)

S/N Ratio: 60 dB

Audio Signals: Frequency Characteristics:

Linear PCM DVD: 4Hz to 22kHz (48kHz sampling)/

4Hz to 44kHz (96kHz sampling) CD: 4Hz to 20kHz (EIAJ) (MPEG Audio Version 2.0) S/N Ratio: CD: 115dB 1kHz (EIAJ) (DV-L88S/S(H))

CD: 96dB 1kHz (EIAJ) (DV-L88W/W(A))

Dynamic Range: Linear PCM DVD: 96dB (EIAJ)

CD: 96dB (EIAJ)

Total Harmonic Distortion Ratio: 0.006% maximum (EIAJ)

Power Requirements: AC Adapter: 10V DC

Battery Pack: 7.4V DC

Power Consumption: Main Power On: 16.5W average (12.5W without AC Adapter)

Main Power Off: 0.1W (without AC Adapter) Standby mode: 1.1W (with AC Adapter)

Dimensions: 211 (W) × 174 (D) × 42.3 (H) mm

(except for projections)

Weight (approx.): 930g

Operating Temperature: 5°C to 35°C

Operating Humidity: 80% RH maximum

Storage Temperature: -20°C to 40°C

DV-L88S/S(H) DV-L88W/W(A)

AC Adapter Specifications

Power Requirements: 110 to 240V AC, 50/60Hz

Rated Output: DVD Operation: 10V DC

Charging: 10V DC

Dimensions: 54 (W) × 98 (D) × 26.5 (H) mm

Weight (approx.): 120g

Battery Pack Specifications (Optional Accessory)

Model: BT-L300S

Type: Lithium-ion type

DC output: 7.4V

Capacity: 5100mAh

Operating temperature: 0°C to 40°C (charging: 10°C to 30°C)

Max. Dimensions: 59 (W) × 142.5 (D) × 20.5 (H) mm

without protruding parts

Weight (approx.): 285g

Specifications are subject to change without notice. Weight and dimensions are approximate.

Digital Output (Linear PCM)

· The digital output format used in this Player is Linear PCM audio sampled at 44.1kHz or 48kHz. Linear PCM sound for DVD discs sampled at 96kHz cannot be output digitally. Check the disc jacket for information on the audio sampling used.

3-1. ACCESSORIES

Accessories: AC Cord x 1, CR2025 type lithium battery x 1, Remote Control Unit x 1, AC Adapter x 1,

Lithium-ion Battery Pack x 1, Headphone x 1, Video/Audio Cable x 1 (DV-L88W/W(A)), Operation Manual x 1

DV-L88S/S(H) DV-L88W/W(A)

4. PART NAMES

Player - Right side

S-VIDEO input/output

jack

VIDEO input/output jack (yellow) Only PAL signal can be input. (NTSC signal cannot be input.)

AUDIO (L)

input/output jack (white)

AUDIO (R)

input/output jack (red)

Player - Rear

OPERATE switch

DIGITAL OUT (OPTICAL)/ PHONES jack

Player - Front

Display panel

angle range: 0°-180°

180°

0°

LCD screen

À / à (SKIP)

â (STILL/PAUSE)

Ë (STOP)

Speakers

Disc compartment cover

SETUP/ADJ.

INPUT/DVD Cursor buttons

('"\

ENTER RETURN

VOLUME –/

î OPEN

Player - Bottom

DC IN jack

Battery pack compartment (inside)

“ RELEASE” tab

Battery pack compartment cover

û (PLAY)

Indicator lamp

Remote Control Unit

INPUT/DVD

OPERATE

FUNCTION

TITLE

VIDEO ADJ.

SETUP

(F.ADV) (SLOW)

ZOOM

PROGRAM

(REPEAT)

DISPLAY

Select/Enter Mode

• The operation buttons have the following Select/Enter functions when Setup screen, Function control screen or another type of setting screen is on the display.

ENTER

INPUT

–

/DVD

OPERATE

TITLE

FUNCTION

SETUP

VIDEO ADJ.

ZOOM

PROGRAM DISPLAY VIEW MODE

DVD VIDEO PLAYER

VOLUME

ENTER

SHIFT

RETURN

LCD ON/OFF

VOLUME

–

VOLUME

SHIFT

â (STILL/ PAUSE)

à (SKIP)

û (PLAY) Ë (STOP)

À (SKIP)

RETURN

è (FWD)

VIEW MODE LCD ON/OFF

È (REV)

5. DISASSEMBLY METHOD

5-1. DISASSEMBLY METHOD

1. Remove the nine screws 1.

2. Remove the six screws and remove the battery cover.

3. Six screws of the operate PWB fixed are removed from the cabinet B bottom.

4. Lift the cabinet A, remove the connector.

DV-L88S/S(H) DV-L88W/W(A)

Cabinet A

Cabinet B

5. Remove the mechanism ass'y and operate PWB.

6. Remove the one screw 2.

7. Remove the three connectors 3.

8. Remove the three screws 4.

9. Remove the LCD unit.

10. Remover the main PWB.

Mechanism Ass'y

Operate PWB

Shield Tape

LCD Unit

Main PWB

DV-L88S/S(H)

Cabinet C

¤

⁄

Hinge L

Hinge R

DV-L88W/W(A)

11. Remove the shield plate and power PWB from cabinet B.

12. Remove the power PWB and shield plate. (Partly fixed with solder.)

Power PWB

Shield Tape

Shield Plate

Cabinet B

13. Remove the four screws 5.

14. Cabinet C is slided in the direction of ¤, and lifted in the arrow direction of ⁄, and removed.

15. Remove the connectors 6 from the LCD PWB.

16. Remove the FFC 8 from the connector.

17. Remove the three screws 7, and remove the hinge L, R.

DV-L88S/S(H) DV-L88W/W(A)

18. Remove the connectors 9 and 0.

19. Remove the three screws q, and remove the LCD fixing angle.

20. Remove the LCD from the cabinet D.

21. Remover the LCD CTL PWB.

22. Remove the screw w.

23. Remove the inverter unit.

LCD CTL PWB

Cabinet D

Inverter Unit

24. Remove the one screw r.

25. Remove the one screw t.

26. Remove the disc cover e by pressing open button.

27. Remove the one screw y.

28. Remover the lock holder, button lock spring and D. cover lock.

29. Remove the mode key, volume key, cursor buttons and open button.

Mode Key

Button Lock Spring

Open Button

D. Cover Lock

Lock Holder

Volume Key

Cursor Buttons

DV-L88S/S(H) DV-L88W/W(A)

6. ADJUSTMENT METHOD

6-1. HARNESS LIST FOR SERVICE PARTS

Parts Code Price Code Remarks Parts Code Price Code Remarks QCNW-8557GEZZ AE Spindle extension, 13-pin QCNW-8566GEZZ AD Operate PWB extension, 2-pin QCNW-8558GEZZ AE Sled extension, 2-pin QCNW-8623GEZZ AZ QCNW-8562GEZZ AK Power-LCD extension, 9-pin QCNW-8624GEZZ AX Main-Power extension, 15-pin QCNW-8563GEZZ AK Power-LCD extension, 10-pin QCNW-8564GEZZ AK Power-LCD extension, 12-pin QCNW-8565GEZZ AE Operate PWB extension, 6-pin

99GFCKWB90751A BX —————

QCNW-8151GEZZ QCNW-8152GEZZ

AQ Inverter extension, 6-pin AQ LCD panel extension, 32-pin

Drawing for service jigs

QCNW-8558GEZZ

Mechanism

Panel

Main-RF&Motor extension, 25-pin

Inverter PWB

99GFCKWB90751A

CN301

MAIN PWB

CN801

B to

CN85

CN84

QCNW-8557GEZZ

RF&MOTOR

PWB

QCNW-8623GEZZ x2

99GFCKWB90751A

CN802

to B

QCNW-8151GEZZ

QCNW-8562GEZZ

99GFCKWB90751A

CN5001

CN9901

CN82CN86

CN1901

CN1800

CN1802

CN6601

B to B

CN81

F F

CN1903

POWER

CN83

CN1801

PWB

CN1902

CN1904

OPERATE

CN1900

PWB

QCNW-8152GEZZ

F C

LCD CTL PWB

QCNW-8564GEZZ

QCNW-8563GEZZ

QCNW-8565GEZZ

DET LCD CLOSE PWB

QCNW-8566GEZZ

CN4402CN4401

99GFCKWB90751A

QCNW-8624GEZZ x4

99GFCKWB90751A

DV-L88S/S(H) DV-L88W/W(A)

ADJUSTMENT PROCEDURE AND METHOD OF LCD PWB SIDE

Connect the LCD PWB to the jig for shipping adjustment.

Adjustment Item Adjustment Menu Adjustment Point Signal/Setting Adjustment Contents

1Free run R1933 Observe the 5PIN of No input Adjust so that the frequency becomes

adjustment (VR) TP1900 (HSY) with a 15.63±0.1kHz (64.0µS).

frequency counter.

HSY

15.63kHz (64.0µS)

2Screen center R1914(VR) Visual observation of

adjustment the panel. (625/25 or 525/30) center.

[Caution] Do the image plane center adjustment of 2 after you surely do free run adjustment of 1.

Image plane center deviates when adjustment is done in the reverse order.

Monoscope full screen.

Adjust the screen so that it is located in the

CHECK ITEMS OF LCD PWB SIDE

Adjustment Item Adjustment Point Input Signal/Setting Adjustment Contents 1Free run check Check the panel visually by connecting External input Check that the horizontal movement of OSD

to the checker. (625/25) is 2 mm or less when inputting a signal in

the external input mode with no signal input.

INPUT

POWER PWB SIDE ADJUSTING PROCEDURE AND METHOD.

Connect the POWER PWB to the jig for shipping adjustment. Supply the power in the condition that the “ENTER” and “STILL” keys are pressed at the same time and move to the special mode (SP MODE). After that, get the initialize set by pressing the “PLAY” key. After setting, turn off the power once. Supply the power again in the condition that the “ENTER” and “STILL” keys are pressed at the same time and after moving to the special mode (SP MODE), get the adjustment mode by pressing “INPUT/DVD” key.

Each operation in the adjustment mode changes as follows: (1) Switch the adjustment block with the "VOLUME+" key input.

TV1

OPT

BAT

(2) Perform paging of each adjustment block with the "RETURN" key.

TV1

TV2

TV3

(3) Switch each adjustment item with the "VOLUME–" key input.

TV1 adjustment

GAM0

TV2 adjustment

WB-R WB-B SCOLOR STINT

TV3 adjustment

COM OSDH BBRIGHT GAIN

SBRIGHT GPOS CONT

(4) Change each adjustment value with the left or right cursor key.

DV-L88S/S(H)

3.8V±0.1

DV-L88W/W(A)

Adjustment Item Adjustment Menu Adjustment Point Signal/Setting Adjustment Contents 1Gamma setting Check that the gamma function of the body is

check on "level 2".

Input

2Contrast check CONT Check that CONT set value is "AB".

3RGB amplitude GAIN

adjustment

4Gamma 0 set GAM0 The set value of GAM0 is changed from "50" to

value change "56".

5Sub-bright SBRIGHT

adjustment

6Common GPOS

amplitude adjustment

Connect the synchroscope to 2PIN (VG) of TP1900.

Connect the synchroscope to 1PIN (COM) of TP1900.

Black-and-white Adjust the Vpp(SYNC-SYNC) of VG to 10STEP 4.0±0.1V.

4.0V±0.1

Black-and-white Adjust the 10% white part(SYNC-white 10%) to 10STEP 1.0±0.05V.

1.0V±0.05

Black-and-white Adjust the common amplitude to 8.0±0.1V. 10STEP

8.0V±0.1

7Contrast CONT

adjustment

8White balance WB-R(Red)

adjustment (Red)

9White balance WB-B(Blue)

adjustment (Blue)

0Burst clear STINT

adjustment

Connect the synchroscope to 2PIN (VG) of TP1900.

Connect the synchroscope to 2PIN (VG) and 3PIN (VR) of TP1900. *Adjust the 30% white.

Connect the synchroscope to 2PIN (VG) and 4PIN (VB) of TP1900.

Connect the synchroscope to 4PIN (VB) of TP1900.

Black-and-white Adjust the 100% white part(SYNC-white100%) 10STEP to 3.8±0.1V.

Black-and-white Adjust the white balance (red) so that black level 10STEP the equal of green and red output become equal.

Black-and-white Adjust the white balance (blue) so that black level 10STEP the equal of green and blue output become

equal. *Adjust the 30% white.

MOD10STEP Adjusted so that the side muscle of the colour

signal may become the smallest with seeing

liquid crystal image plane. [Another method] 100% colour bar Adjusted so that every horizontal term space

[Another method]

may become the level which the swing level of

yellow of the colour bar signal is the same as.

DV-L88S/S(H) DV-L88W/W(A)

Adjustment Item Adjustment Menu Adjustment Point Signal/Setting Adjustment Contents qSub colour SCOLOR

adjustment

wConfrontation COM Specified adjustment jig No input state When using the specified adjustment jig

bias adjustment (illuminometer) or visual

Connect the synchroscope to 4PIN (VB) of TP1900.

100% colour bar Adjust the yellow amplitude of the colour bar

signal (white level to yellow peak level) to

2.5±0.1Vpp.

White

2.5V ±0.1

Yellow

Brightness: Center

Connect the output of jig to the oscilloscope

observation Perform it in a and adjust the waveform to the minimum

combination of point. PWB and the At this time, perform the adjustment several liquid crystal times to fix the optimal point because the panel which will measuring value hardly changes around the be supplied as optimal point. products finally.

(Type drawing)

Optimal point

Adjust within the above range to fix the optimal point

In case of visual adjustment Stand or tilt the panel as shown in the figure and check by shaking your head and seeing whether stripes appear. If the adjustment is improper, you will see stripes in the longitudinal direction. Perform the adjustment so that they do not appear.

Direction of stripe

[Another method]

[Another method] Flicker signal Externally input the signal shown left and generator adjust so that the cross bars become minimum “Example: by visually checking the screen. BP1018 made by JFC”

eOSD position OSDH OSD character The position of the adjustment value on the

adjustment visual observation right end of the OSD character is adjusted to

15mm ± 2mm from the right end of the image

plane.

15mm

rLighting control BBRIGHT Check that the BBRIGHT is “76”.

standard check

DV-L88S/S(H) DV-L88W/W(A)

CHECK AND READJUSTMENT

Adjustment Item Adjustment Menu Adjustment Point Signal/Setting Adjustment Contents 1Free run R1933 OSD character External input Check that the horizontal movement of OSD

check (VR) visual observation (625/25) position is 2mm or less when inputting a signal

in the external input mode with no signal input. If it is more than 2 mm, adjust it so as to get 2 mm or less

INPUT

2Screen positon R1914 Visual observation of Monoscope full 95% of the scales for the overcoat scanning

check (VR) panel screen confirmation confirm whether it can be seen

(625/25) with the right and left as well in the monoscope

image plane. Center adjustment is done when a scale can't be seen.

3Luminance/ GPOS Comparison with the 10STEP signal Check whether the luminance and gradation

gradation check standard set of 10STEP signal are not different in compar-

ison with the standard set. If they are different, adjust them so as to get equal to the standard set.

4Sub colour SBRIGHT Comparison with the Check whether the depth of colour is not diffe-

check standard set rent in comparison with the standard set. If it is

different, addjust it so as to get equal to the standard set.

5Sub tint check STINT Comparison with the Check wheter the tone is not different in co-

standard set mparison with the standard set. If it is different,

adjust it so as to get equal to the standard set.

6OSD positon OSDH OSD character External input Check the outside input mode, and it confirms

check visual observation that the character of INPUT of OSD is 15mm

± 2mm from the right end of the image plane. When it deviates, it is confirmed.

15mm

INPUT

BATTERY END VOLTAGE ADJUSTMENT

1. Initial setting (1) Power supply

Input 6.15V±0.05V to the DVD battery. Note1) Set the voltage on the DC input jack PWB of the main unit to the value specified above in the condition of

DVD start-up (LCD lit).

Note 2) Check the voltage with a calibrated measuring instrument. In case that drift is worried, check the voltage

periodically.

2. Battery end voltage adjusting procedure and method (1) Select the battery detection error compensation adjustment mode.

1 Turn on the main power switch on while pressing the “UP” “DOWN” keys of the main unit at the same time. 2 Press the mode selection key. 3 Press the sound volume down button twice to enter the battery adjusting screen. 4 With button changing button, make the cross key to the cursor mode. (With 70 type remote controller, the cursor

key can be used for operation as it is.)

(2) Adjust with the right and left key so that the “BAT” value displayed on the LCD becomes “0”.

No. Item Checked place Checking method Standard, condition Remarks

1 S image Y output S terminal 1. Play the test disc TDV - 581A.

2. Check the Y output with an 1Vp-p ± 0.15Vp-p S terminal Y output oscilloscope. Measure at 75Ω

termination.

2 S image C output S terminal 1. Play the test disc TDV - 581A.

2. Check the C output with an 0.286Vp-p ± 0.15Vp-p S terminal C output oscilloscope. Measure at 75Ω

termination.

3 Error rate check Display 1. Press the STOP key and the V-CD:TDV-581A When playing back.

PLAY key of the main unit key 20/4 at the same time and check the error rate displayed on the display.

DVD:TV-501 38/76

4 Flash memory Display 1. Press the return key and the Model name of the When NO DISC.

check VOL-UP key of the main unit software

key at the same time. Region code Transmit the numeric number Software Ver. key of R/C (1), next transmit play to check the model name and the region code, and transmit play again to check the software Ver.

Sound level check

Audio output L/R

Play the title 49, chapter 1AC - 320 mode of the test disc TV - 501 to check the sound output level.

1.35Vrms ± 0.3Vrms

DV-L88S/S(H) DV-L88W/W(A)

6 Digital sound Digital sound Connect the digital surround The sound from the digital

output check output processor to the digital sound surround processor must

output and play the VCD to check be played properly. the sound output from the digital surround processor.

7 Distorted disc Played image Play the test disc TDV - 533 to It must be normally played.

playback check check the played image on the * No EJECT, rickety play

monitor screen. or staying in LOAD

condition are allowed.

DV-L88S/S(H) DV-L88W/W(A)

No. Item Checked place Checking method Standard, condition Remarks

8 Battery display Main unit LCD 1. Supply 8V to the battery

check terminal. Get the DVD start-up

screen.

2. Change the battery voltage to 7V. → Check the battery half

display.

3. Change the battery voltage to

6.5V. → Check the battery alarm

display.

4. Change the battery voltage to

5.9V. → Check the power is

turned off.

9 Charging action Main unit LED 1. Supply power from an

check AC adapter.

2. Connect 15Ω supplied a 6.5V DC to the battery terminal → Check the LED for or connect the empty battery. charging orange lights on.

DV-L88S/S(H) DV-L88W/W(A)

7. TEST MODE

Test Mode A power source is put, and a Skip/Forward key and a Volume Up key are pushed after the "NO DISC" display

at the same time. (It keeps pushing it for about three seconds.)

ROM Renewal Mode A power source is put with pushing a Skip/Forward key and Volume Down key at the same time.

(It keeps pushing it for about three seconds.)

[TEST MODE]

Test mode initial image plane F0000000 00000000

The preparation date display of the program 10000000 ******** (Last updata)

The "PLAY" key of the remote controller is pushed.

Model number display 10000001 00007604 (Model number)

The "PLAY" key of the remote controller is pushed.

The version display of the program 10000002 ******** (Program ver.)

The "PLAY" key of the remote controller is pushed. Reagion number display 10000003 00000008 (Region code:Binary display)

The "PLAY" key of the remote controller is pushed. Micro-code number display 10000004 ******** (Microcode ver.)

The "PLAY" key of the remote controller is pushed. The preparation date display of the servo program

10000005 ******** (Servo ver.)

The "PLAY" key of the remote controller is pushed. It is returned to the test mode initial image plane.

Micro-code is the thing of the process program of the system integrated circuit.

Colour bar display 20000001 00000000 (FIP)

Colour bar display 20000002 00000000 (FIP)

Colour bar display 20000003 00000000 (FIP)

To (1)

There is no copy guard signal. What is the symptom at the time of dubbing to VTR?

The "PLAY" key of the remote controller is pushed.

AGC only What is the symptom at the time of dubbing to VTR?

The "PLAY" key of the remote controller is pushed.

AGC+Colour stripe1 What is the symptom at the time of dubbing to VTR?

The "PLAY" key of the remote controller is pushed.

AGC+Colour stripe2 What is the symptom at the time of dubbing to VTR?

The "PLAY" key of the remote controller is pushed.

DV-L88S/S(H) DV-L88W/W(A)

STEP TEST 30000201 00000000

From (1)

DVD laser lights, the spindle motor rotates and the pickup moves to the outer periphery. 30000001 000000DD

DVD laser off, CD laser on, spin kick, sled outer periphery feed ErrDisplay0 ErrDisplay1 30000001 000000CD

Laser off, spin kick, sled outer periphery feed ErrDisplay0 ErrDisplay1 30000001 00000000

<Disk is put, and the "2" key of the remote controller is pushed.> *It is usually returned in power source off for the state.

Focus on

The "PLAY" key input.

STEP TEST DD00E210 EEEEEEEE

When a disk is not in.

Note:Not to face the light of the laser squarely, caution!

STEP TEST 30000202 00000000

STEP TEST 30000203 00000000

STEP TEST 30000204 00000000

STEP TEST 30000205 00000000

STEP TEST DD000210 00000000

STEP TEST DD000211 00000000

RF gain adjustment, Track on

The "PLAY" key input.

Focus gain adjustment

The "PLAY" key input.

Track gain adjustment

The "PLAY" key input.

Focus balance adjustment

The "PLAY" key input.

(In case of CD) STEP TEST END CD000210 ********

(******** is sub-Q.)

After TOC Reading, Follow-up play condition

STEP TEST END DD000212 ********

(******** is the sector ID.)

Focus balance of the layer 1, follow-up play condition after focus gain adjustment

DV-L88S/S(H)

Personal computer

(DOS)

DVD itself

Connect to the video input terminal. Connect the “red” audio cable to jig.

Fixture for the ROM renewal

DV-L88W/W(A)

[ROM RENEWAL MODE]

1. Connect the DVD main unit and the computer as shown on the right. And then start-up the software for rewriting.

2. Turn on the power while the Skip/Forward key and the Volume Down key of the DVD main unit are kept pressed at the same time. (Keep pressing about 3 second.)

The red LED flickers 5 - 6 times with the 0.5 second cycle and then the green LED flickers with 0.1 second cycle.

3. According to the computer display, data transfer prompt is issued by inputting “Y” and pressing ENTER key, and when the rewriting starts normally,

The LED in green lights on from flickering.

4. When the rewriting is completed normally,

The green LED lights on.

5. After completing the rewriting and checking the display of No. 4 shown above, always press the “RETURN” key. After that turn off the POWER.

6. Treatment in case of rewriting error

1 The red LED flickers with 0.1 second cycle (When the stop key is pressed it

return to the condition of “2” so write again.)

2 The red/green LED flickers by turns (When the stop key is pressed it becomes

the condition of “5” so write again from “1”.)

DV-L88S/S(H)

Check AC adapter or battery-pack.

Voltage on DC JACK (Approx. 10V) or battery

terminal (8.4 - 6V)?

Yes

The power cannot be turned on.(1)

•When using the AC adapter ------check circuit

around F901, Q904, Q905.

•When using battery------check circuit around

F902, Q906, Q913.

Voltage specified above (Approx.6 - 10V) on

TP9002, TP9003?

Yes

Voltage of approx. 6 - 11V supplied on 4 pin of

IC5503?

Voltage of approx. 5V supplied on 72 pin of

IC5502 (TV microcomputer)?

Yes

29 pin of IC5502 still “L”?

Oscillation signal of 32kHz checked on 23, 24 pins

of IC5502?

Yes

Check the IC5502 and X5502.

Check the Q5503 and Q5504.

Yes

Circuit protector CP9001 is actuated (disconnection)

replace. Check LCD inverter circuit, INV-V line,

D5510, D5512, Q5506 and Q5507.

Refer to “The key operation is disabled.” or

“No operation is possible from the infrared remote

control.”.

•Approx. 5V outputted to 45 pin of IC5502?

•Approx. 5V outputted to 46 pin of IC5502?

(DVD mode)

Yes

Check PCON-H line between IC5502 - IC9001.

•Approx. 4.5 V supplied to 20 - 21 pins of IC9001?

•Approx. 4.5 V supplied to 22 pin of IC9001?

(DVD Mode)

Yes

Appropriate voltage outputted on each B line

(TP9005 - 9012)?

Yes

Triangle oscillation of approx. 0.6V p-p checked on

17 pin of IC9001?

Circuit protector CP9002 cut?

Yes

Check short circuit of each SWITCHING TR and

each B line.

* All the B lines cannot be outputted for short

circuit of even 1postion (1 line).

Replace IC5503.

Replace IC9001.

FLOW CHART NO.1

Attach junction line properly or replace junction line.

Wire between operation PWB and Power PWB

connected properly?

Yes

The key operation is disabled.

Slide switch does not function.

When slide switch is placed "ON", 5 pin of IC5502

is "L"?

Yes

Is the control voltage normally into the pins(78)

and (80) of IC5502? (78pin→KEY)

Replace S5501.

Yes

Replace operation pwb or S4001~S4005.

Replace IC5502.

FLOW CHART NO.2

Check TVMI_5V line.

Replace the remote control receiver.

FLOW CHART NO.3

Operation is possible from the body, but no

operation is possible from the infrared remote

control.

Replace the remote control receiver or replace the

remote control transmitter is necessary.

Is 5V voltage supplied to the pin 2 terminal of

remote control receiver?

Is the "L" pulse sent out pin 3 terminal of receiver

when the infrared remote control is activated?

(Actuated with power button)

DVD cannot be operated but TV can be operated.

(DVD is actuated with play, stop button.)

To 2

1“L” pulse signal is generated from 79 pin of

IC5502?

(Actuated with power button)

Yes

To 1

Replace IC5502.

Yes

Check line of 2 pin of IC4001.

2“L” pulse signal is generated from 32 pin of

IC502?

(DVD is actuated with play, stop button.)

Replace IC502.

Yes

Check D512 line.

Yes

No operation is possible from the infrared remote control.

0.5

1.5

2.5

3.5

4.5

PLAY

STOP

STILL

SKIP/BACK

SKIP/FORWARD

DVD/INPUT

SETUP/ADJUPRIGHT

LEFT

DOWN

ENTER

RETURN

VOL-UP

VOL-DOWN

DV-L88W/W(A)

8. TR OUBLESHOOTING

DV-L88S/S(H)

FLOW CHART NO.4

Is the tray lid open?

When S802 is pressed, are the pins 3 and 4

short-circuited?

Check the connection between pins 2 or 4 of S802

and pin 27 of IC502.

Does the pickup move in the direction of inner

periphery?

Check the cable connecting to the CN7302.

(Check the CN7302 and line of pins 2 and 4 of IC705.)

Check the cable connecting to the CN7303.

Replace the S802.

Yes

After moving in the direction of inner periphery,

does the pickup move in the direction of outer

periphery?

Yes

Check the M_4.8V line.

Is 4.8V being applied to the pins 16 and 17 of

IC7701?

Yes

Replace the IC7701.

Yes

The disc does not rotate.

Is FE signal inputted into the pin 150 of IC701.

Check or replace IC701.

Check the line between the IC301 and IC701.

FLOW CHART NO.5

When removing disc and applying load to spin

motor (by stopping with hand, etc.), objective lends

moves up and down? (Checking item to symptom)

Note) If load is not applied to spin, lens does not

move and becomes NO DISC immediately.

See FLOW CHART NO.6<The [No Disc] indication.

(In case focus servo does not function.)>

Replace IC301.

Is there input signal on the pins(50,55) and (49,54)

of IC301?

Is FE signal output to the pin 21 of IC301 when

the disc is set?

Check the connection of optical pickup cable.

If it is normal, replace the optical pickup.

Yes

The [No Disc] indication. (In case of focus error)

In case of CD For DVD, 58, 59, 63, and 64

FLOW CHART NO.6

Is the focus control signal output to the pin 14 of

IC701?

Check the IC701 DAC power source periphery

circuit. If it is normal, replace IC701.

Check M_5V line.

Is 8V voltage applied to the pins 8 and 27 and

25 and 24 of IC705?

Replace IC705.

Is the focus control signal from the pin 158 of

IC701 input into the pin 20 of IC705?

Check the focus control signal (DA0) line between

the IC705 and IC701.

Is the focus control drive voltage output from the

pins 29 and 30 of IC705?

Yes

The [No Disc] indication. (In case focus servo does not function.)

Check the line between the IC705 and the focus

actuator.

Focus control drive voltage applied to 27, 29 pin

of CN7301 (focus actuator terminal)?

Check the connection of optical pickup cable.

If it is normal, replace the optical pickup.

FLOW CHART NO.7

Check the D_3.1V line and A_5V line.

Is the drive signal (SEL) of Q301 (LD POWER

ON) being output to the pin 37 of IC701?

Is the drive signal (LDO1) of Q302 (LD POWER

CTL) being output to the pin 45 of IC301?

When S801 is pressed, is the base of Q303 0.8V?

Is the voltage of 3.3V being applied to the emitter

of Q301? And, is the voltage of 3.4V being applied

to the emitter of Q302?

Is the voltage of 3.1V and 2.3V being applied to

the pins 14 and 23 of CN7301, respectively?

Check the connection of optical pickup cable.

If it is normal, replace the pickup.

Check the Q301 and line between Q302 and

CN301.

Check the line from the pin 37 of IC701 to the base

of Q301.

Check the line between the pin 45 of IC301 and

base of Q302.

Check the line between S801 and R323.

Yes

The DVD disc is not recognized.

(When the laser beam does not go on)

FLOW CHART NO.8

Check the A_5V line.

Is the drive signal (LDO2) of Q304 (LD POWER

CTL) being output to the pin 4 of IC301?

When S801 is pressed, is the base of Q304 0.8V?

Is the voltage of 3.4V being applied to the emitter

of Q303?

Is the voltage of 2.3V being applied to the pin 9

of CN7301?

Check the connection of optical pickup cable.

If it is normal, replace the pickup

Check the line between Q304 and CN7301.

Check the line between the pin 4 of IC301 and

base of Q303.

Check the line between S801 and R323.

Yes

The CD disc is not recognized.

(When the laser beam does not go on)

FLOW CHART NO.9

Check tray switch. S801, 802

Check for contamination of objective lens of

optical pickup.

Replace the optical pickup unit.

When cover is closed, disc starts rotating?

Check the main PWB unit.

Set disc to mechanism.

Replace the main PWB unit.

Is the level of RF signal which is output from

pin 28 of IC301, normal?

Yes

Both picture and sound do not operate normally.(1)

DV-L88W/W(A)

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