Sharp DV-L88S/S User manual

DV-L88S/S(H)
DV-L88W/W(A)
1
S31R1DV-L88S/
SERVICE MANUAL
Page
1. IMPORTANT SAFEGUARDS AND PRECAUTIONS ........................................................................ 2
2. FEATURES........................................................................................................................................ 4
3. SPECIFICATIONS ............................................................................................................................. 4
4. PART NAMES.................................................................................................................................... 6
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
CONTENTS
In the interests of user-safety (Required by safety regula-
tions in some countries) the set should be restored to its
originalconditionandonlyparts identical to those specified
be used.
MODELS DV-L88S/S(H)
DV-L88W/W(A)
SERVICE MANUAL PORTABLE DVD VIDEO PLAYER MODELS DV-L88S/S(H)/W/W(A)
PORTABLE DVDVIDEO PLAYER
SHARP CORPORATION
NTSC/PAL

DV-L88S/S(H)
DV-L88W/W(A)
2
1. IMPORTANT SAFEGUARDS AND PRECAUTIONS
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 OTHERTHANTHOSE SPECIFIED HEREIN MAY RESULT IN HAZARDOUS RADIATION EXPOSURE. ASTHE LASER BEAM USED INTHIS PLAYER IS HARMFULTOTHE EYES, DO NOT ATTEMPTTO DISASSEMBLETHE CABINET. REFER SERVICINGTO QUALIFIED PERSONNEL ONLY.
WARNING: TO REDUCETHE RISK OF FIRE OR ELECTRIC SHOCK, DO NOT EXPOSETHIS PLAYERTO RAIN OR MOISTURE. TO REDUCETHE RISK OF FIRE OR ELECTRIC SHOCK, AND ANNOYING INTERFERENCE, USETHE 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
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-L88S/S(H)
DV-L88W/W(A)
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åå
åå
åCAUTION
BEFORE BATTERY DESTROY
The RBRCTM Seal
SHARPparticipatesintheRBRCTM*Nickel-CadmiumBatteryRecyclingProgramintheUnitedStates.TheRBRCTM
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.Attheendoftheirusefullife,theNickel-Cadmiumbatterycanbedroppedoffatthenearestcollectioncenter
for recycling. For information on the nearest collection center, call 1-800-8-BATTERY or your local recycling
center.IfyouarelocatedoutsidetheUnitedStates,contactyourlocalauthoritiesforinformationconcerningproper
disposaland/orrecyclingofthisbattery.SHARP'sinvolvementinthisprogramispartofourcommitenttoprotecting
our environment and conserving natural resources.
[Footnote] *RBRCTM is a trademark of the Rechargeable Battery Recycling Corporation.
ËË
ËË
ËNICKEL-METAL HYDRIDE BATTERY
ËË
ËË
ËLITHIUM or LITHIUM-ION BATTERY
ËË
ËË
ËSEALED LEAD BATTERY
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)
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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 opticaldigital outputjack (whichdoubles asthe phones jack)can beused tooutput astream of *2DolbyDigital 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)

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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
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

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4. PART NAMES
Player - Right side
Player - Rear
DC IN jack
VIDEO input/output
jack (yellow)
Only PAL signal can be input.
(NTSC signal cannot be input.)
OPERATE switch
S-VIDEO input/output
jack
AUDIO (R)
input/output jack (red)
AUDIO (L)
input/output jack (white)
DIGITAL OUT (OPTICAL)/
PHONES jack
Player - Front
Display panel
angle range: 0°-180°LCD screen
Speakers
Indicator lamp
î OPEN
Cursor buttons
('"\
|)
ENTER
RETURN
VOLUME –/
+
À/ à(SKIP)
Ë (STOP)
û (PLAY)
â (STILL/PAUSE)
180°
0°
SETUP/ADJ.
INPUT/DVD
Disc compartment
cover
Player - Bottom
.
Battery pack compartment (inside)
Battery pack compartment cover
“ RELEASE” tab
Remote Control Unit
OPERATE
TITLE
MENU
SETUP
ZOOM PROGRAM DISPLAY VIEW MODE
DVDVIDEO PLAYER
RETURN VIDEO ADJ.
ENTER
SHIFT FUNCTION
–
VOLUME
+
INPUT
/DVD
LCD ON/OFF
Select/Enter Mode
ENTER
–
VOLUME
VOLUME
+
RETURN
VIEW MODE
LCD ON/OFF
à (SKIP)
À (SKIP)
è (FWD)
È (REV)
Ë (STOP)
û (PLAY)
â (STILL/
PAUSE)
SHIFT
INPUT/DVD
OPERATE
FUNCTION
TITLE
MENU
VIDEO ADJ.
SETUP
(F.ADV)
(SLOW)
ZOOM
PROGRAM
(REPEAT)
DISPLAY
• 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.

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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.
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.
1
Cabinet A
Cabinet B
Operate PWB
Shield Tape
Mechanism Ass'y
2
4
Main PWB
4
LCD Unit
3

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11. Remove the shield plate and power PWB from cabinet B.
12. Remove the power PWB and shield plate.
(Partly fixed with solder.)
13. Remove the four screws 5.
14. Cabinet C is slided in the direction of ¤, and lifted in the arrow
direction of ⁄, and removed.
Power PWB
Shield Tape
Shield Plate
Cabinet B
Cabinet C
5
¤ ⁄
Hinge L
Hinge R
7
87
6
15. Remove the connectors 6from the LCD PWB.
16. Remove the FFC 8from the connector.
17. Remove the three screws 7, and remove the hinge L, R.

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LCD CTL PWB
Inverter Unit
Cabinet D
11
9
10
12
18. Remove the connectors 9and 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.
13
14
15
16 Cursor Buttons
Volume Key
Mode Key
Open Button
D. Cover Lock
Button Lock Spring
Lock Holder
24. Remove the one screw r.
25. Remove the one screw t.
26. Remove the disc cover eby 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.

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6. ADJUSTMENT METHOD
6-1. HARNESS LIST FOR SERVICE PARTS
Drawing for service jigs
Inverter PWB
QCNW-8152GEZZ
QCNW-8151GEZZ
QCNW-8558GEZZ
QCNW-8557GEZZ
CN1901
LCD CTL PWB
OPERATE
PWB
POWER
PWB
MAIN PWB
F
F
C
F
F
C
Panel
CN1900
CN1903 CN1902
CN5001
CN9901
CN802
CN801
CN301
CN6601
CN4402CN4401
CN1800
CN1801
CN1802
CN1904
912
10 9
12
10
Mechanism
QCNW-8562GEZZ QCNW-8564GEZZ
QCNW-8563GEZZ
QCNW-8565GEZZ
QCNW-8566GEZZ
DET LCD
CLOSE PWB
QCNW-8624GEZZ x4 99GFCKWB90751A
B
to
BB
to
B
B
to
B
99GFCKWB90751A
99GFCKWB90751A
99GFCKWB90751A
99GFCKWB90751A
99GFCKWB90751A
QCNW-8623GEZZ x2
CN83
CN81
CN82CN86
CN84
CN85
RF&MOTOR
PWB
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 Main-RF&Motor extension, 25-pin
QCNW-8562GEZZ AK Power-LCD extension, 9-pin QCNW-8624GEZZ AX Main-Power extension, 15-pin
QCNW-8563GEZZ AK Power-LCD extension, 10-pin 99GFCKWB90751A BX —————
QCNW-8564GEZZ AK Power-LCD extension, 12-pin QCNW-8151GEZZ AQ Inverter extension, 6-pin
QCNW-8565GEZZ AE Operate PWB extension, 6-pin
QCNW-8152GEZZ AQ LCD panel extension, 32-pin

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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.
2Screen center R1914(VR) Visual observation of Monoscope full screen. Adjust the screen so that it is located in the
adjustment the panel. (625/25 or 525/30) center.
HSY
15.63kHz
(64.0µS)
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 Checkthat the horizontal movementof 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.
Supplythepowerintheconditionthatthe“ENTER”and“STILL”keysarepressedatthesametimeandmovetothespecial
mode (SP MODE).
After that, get the initialize set by pressing the “PLAY” key. After setting, turn off the power once.
Supplythepoweragainintheconditionthatthe“ENTER”and“STILL”keysarepressedatthesametimeandaftermoving
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.
(2) Perform paging of each adjustment block with the "RETURN" key.
(3) Switch each adjustment item with the "VOLUME–" key input.
(4) Change each adjustment value with the left or right cursor key.
TV1 TV2 TV3
TV1 OPT BAT
GAM0
TV1 adjustment
TV2 adjustment
TV3 adjustment
SBRIGHT GPOS CONT
WB-R WB-B SCOLOR STINT
COM OSDH BBRIGHT GAIN
[Caution] Do the image plane center adjustment of 2after you surely do free run adjustment of 1.
Image plane center deviates when adjustment is done in the reverse order.

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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".
2Contrast check CONT Check that CONT set value is "AB".
3RGB amplitude GAIN Connect the synchroscope Black-and-white Adjust the Vpp(SYNC-SYNC) of VG to
adjustment
to 2PIN (VG) of TP1900. 10STEP 4.0±0.1V.
4Gamma 0 set GAM0 The setvalue ofGAM0 ischanged from"50" to
value change "56".
5Sub-bright SBRIGHT Connect the synchroscope Black-and-white Adjustthe10%whitepart(SYNC-white10%)to
adjustment
to 2PIN (VG) of TP1900. 10STEP 1.0±0.05V.
6Common GPOS Connect the synchroscope Black-and-white Adjust the common amplitude to 8.0±0.1V.
amplitude
to 1PIN (COM) of TP1900. 10STEP
adjustment
7Contrast CONT Connect the synchroscope Black-and-white Adjustthe100%whitepart(SYNC-white100%)
adjustment
to 2PIN (VG) of TP1900. 10STEP to 3.8±0.1V.
8White balance WB-R(Red) Connect the synchroscope Black-and-white Adjust the white balance (red) so that black level
adjustment
to 2PIN (VG) and 3PIN 10STEP theequalofgreenandredoutput becomeequal.
(Red)
(VR) of TP1900. *Adjust the 30% white.
9White balance WB-B(Blue) Connect the synchroscope Black-and-white Adjustthewhitebalance(blue)sothatblacklevel
adjustment
to 2PIN (VG) and 4PIN 10STEP the equal of green and blue output become
(Blue)
(VB) of TP1900. equal.
*Adjust the 30% white.
0Burst clear STINT Connect the synchroscope MOD10STEP Adjusted so that the side muscle of the colour
adjustment
to 4PIN (VB) of TP1900. signal may become the smallest with seeing
liquid crystal image plane.
[Another method] [Another method]
100% colour bar Adjusted so that every horizontal term space
may become the level which the swing level of
yellow of the colour bar signal is the same as.
8.0V±0.1
4.0V±0.1
3.8V±0.1
1.0V±0.05
Input
G

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Adjustment Item Adjustment Menu Adjustment Point Signal/Setting Adjustment Contents
qSub colour SCOLOR
Connect the synchroscope 100% colour bar Adjust the yellow amplitude of the colour bar
adjustment
to 4PIN (VB) of TP1900. signal (white level to yellow peak level) to
2.5±0.1Vpp.
wConfrontation COM Specified adjustment jig No input state When using the specified adjustment jig
bias adjustment (illuminometer) or visual
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.
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.
[Another method] [Another method]
Flicker signal Externally input the signal shown left and
generator adjustsothatthe crossbarsbecomeminimum
“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.
rLighting control BBRIGHT Check that the BBRIGHT is “76”.
standard check
(Type drawing) Optimal point
Adjust within the above
range to fix the optimal point
Direction of stripe
15mm
2.5V
±0.1
White
Yellow

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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
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 mparisonwiththe standard set. Ifit 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.
CHECK AND READJUSTMENT
INPUT
INPUT
15mm

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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.
1Turn on the main power switch on while pressing the “UP” “DOWN” keys of the main unit at the same time.
2Press the mode selection key.
3Press the sound volume down button twice to enter the battery adjusting screen.
4With 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.
5
Sound level check Audio output Play the title 49, chapter 1AC - 320 1.35Vrms ±0.3Vrms
L/R
mode of the test disc TV - 501 to
check the sound output level.
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)
16
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 15Ωsupplied 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)
17
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]
The preparation date display of the program
10000000 ********
(Last updata)
Model number display
10000001 00007604
(Model number)
The version display of the program
10000002 ********
(Program ver.)
Reagion number display
10000003 00000008
(Region code:Binary display)
Colour bar display
20000001 00000000 (FIP)
Micro-code number display
10000004 ********
(Microcode ver.)
The preparation date display of the servo program
10000005 ********
(Servo ver.)
It is returned to the test mode initial image plane.
<The "2" key of the remote controller is pushed.>
<The "3" key of the remote controller is pushed.>
<The "1" key of the remote controller is pushed.>
Test mode initial image plane
F0000000 00000000
The "PLAY" key of the remote controller is pushed.
The "PLAY" key of the remote controller is pushed.
The "PLAY" key of the remote controller is pushed.
The "PLAY" key of the remote controller is pushed.
The "PLAY" key of the remote controller is pushed.
The "PLAY" key of the remote controller is pushed.
The "PLAY" key of the remote controller is pushed.
There is no copy guard signal.
What is the symptom at the time of dubbing to VTR?
Colour bar display
20000002 00000000 (FIP)
The "PLAY" key of the remote controller is pushed.
The "PLAY" key of the remote controller is pushed.
AGC only
What is the symptom at the time of dubbing to VTR?
Colour bar display
20000003 00000000 (FIP)
The "PLAY" key of the remote controller is pushed.
AGC+Colour stripe1
What is the symptom at the time of dubbing to VTR?
AGC+Colour stripe2
What is the symptom at the time of dubbing to VTR?
Colour bar display
20000003 00000000 (FIP)
To (1)
Micro-code is the thing of the process
program of the system integrated circuit.

DV-L88S/S(H)
DV-L88W/W(A)
18
<Disk is put, and the "2" key of the remote controller is pushed.>
*It is usually returned in power source off for the state.
<The "1" key of the remote controller is pushed.>
DVD laser lights, the spindle motor
rotates and the pickup moves to the
outer periphery.
30000001 000000DD
<The "1" key of the remote controller is pushed.>
Note:Not to face the light of the laser squarely,
caution!
The "PLAY" key input.
The "PLAY" key input.
From (1)
STEP TEST
30000201 00000000
STEP TEST
30000202 00000000
STEP TEST
DD00E210 EEEEEEEE When a disk is not in.
RF gain adjustment, Track on
Focus on
The "PLAY" key input.
STEP TEST
30000203 00000000 Focus gain adjustment
The "PLAY" key input.
STEP TEST
30000204 00000000 Track gain adjustment
The "PLAY" key input.
(******** is the sector ID.)
(******** is sub-Q.)
After TOC Reading,
Follow-up play condition
STEP TEST
30000205 00000000 Focus balance adjustment
Focus balance of the layer 1,
follow-up play condition after focus gain adjustment
(In case of CD)
STEP TEST
DD000210 00000000 STEP TEST END CD000210 ********
STEP TEST
DD000211 00000000
STEP TEST END
DD000212 ********
DVD laser off, CD laser on, spin kick,
sled outer periphery feed
ErrDisplay0 ErrDisplay1
30000001 000000CD
<The "1" key of the remote controller is pushed.>
<The "1" key of the remote controller is pushed.>
Laser off, spin kick, sled outer periphery
feed
ErrDisplay0 ErrDisplay1
30000001 00000000

DV-L88S/S(H)
DV-L88W/W(A)
19
[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
1The red LED flickers with 0.1 second cycle (When the stop key is pressed it
return to the condition of “2” so write again.)
2The red/green LED flickers by turns (When the stop key is pressed it becomes
the condition of “5” so write again from “1”.)
Personal computer
(DOS)
DVD itself
Connect to the video input
terminal.
Connect the “red” audio cable to jig.
Fixture for the ROM renewal

DV-L88S/S(H)
DV-L88W/W(A)
20
8.TROUBLESHOOTING
Check AC adapter or battery-pack.
No
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.
No
Voltage specified above (Approx.6 - 10V) on TP9002, TP9003? Yes
Voltage of approx. 6 - 11V supplied on 4 pin of IC5503?
No
Voltage of approx. 5V supplied on 72 pin of IC5502 (TV microcomputer)? Yes
Yes
29 pin of IC5502 still “L”?
No
Oscillation signal of 32kHz checked on 23, 24 pins of IC5502?
Yes Check the IC5502 and X5502.
Check the Q5503 and Q5504.
No
No
No 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.”.
No
•Approx. 5V outputted to 45 pin of IC5502? •Approx. 5V outputted to 46 pin of IC5502? (DVD mode)
No
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)?
No
No
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.
No
Wire between operation PWB and Power PWB connected properly? Yes
Yes
The key operation is disabled.
No
Slide switch does not function.
No
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.
No 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)
No
No No
Yes No
To 1
Replace IC5502.
No
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.
No
Yes
Check D512 line.
Yes Yes
Yes
No operation is possible from the infrared remote control.
0.5
1
1.5
2
2.5
3
3.5
4
4.5
5
PLAY
STOP
STILL
SKIP/BACK
SKIP/FORWARD
DVD/INPUT SETUP/ADJ UP RIGHT LEFT DOWN ENTER RETURN VOL-UP VOL-DOWN