Sharp DV-L88U Service manual

SERVICE MANUAL PORTABLE DVD VIDEO PLAYER

DV-L88U

SERVICE MANUAL

S21P2DV-L88U/

PORTABLE D VD VIDEO PLAYER

MODEL DV-L88U

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

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

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

13. PACKING OF THE SET................................................................................................................... 77

MODEL

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.

D V-L88U

CONTENTS

Page

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

2. FEATURES........................................................................................................................................ 5

3. SPECIFICATIONS ............................................................................................................................. 5

4. PART NAMES.................................................................................................................................... 7

5. DISASSEMBLY METHOD ................................................................................................................. 8

6. ADJUSTMENT METHOD ................................................................................................................ 11

7. TEST MODE .................................................................................................................................... 18

8. TROUBLESHOOTING..................................................................................................................... 21

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

SHARP CORPORATION

This document has been published to be used for
after sales service only.
The contents are subject to change without notice.

1

DV-L88U

1. IMPORTANT SAFEGUARDS AND PRECAUTIONS

1. IMPORTANT SERVICE NOTES

BEFORE RETURNING THE DVD VIDEO PLAYER
Before returning the DVD video player to the user,

perform the following safety checks.

1. Inspect all lead dress to make certain that leads are
not pinched or that hardware is not lodged between
the chassis and other metal parts in the DVD video
player.

2. Inspect all protective devices such as non-metallic
control knobs, insulation materials, cabinet backs,
adjustment and compartment covers or shields, isola­tion resistor/capacitor networks, mechanical insula­tors etc.

3. To be sure that no shock hazard exists, check for
current in the following manner.

● Plug the AC line cord directly into a 120 volt AC outlet
(Do not use an isolation transformer for this test).

● Using two clip leads, connect a 1.5k ohm, 10 watt
resistor paralleled by a 0.15µF capacitor in series with
all exposed metal cabinet parts and a known earth
ground, such as a water pipe or conduit.

● Use an DVM or VOM with 1000 ohm per volt, or higher,
sensitivity or measure the AC voltage drop across the
resistor (See Diagram).

● Move the resistor connection to earth exposed metal
part having a return path to the chassis (metal cabinet,
screw heads, knobs and control shafts, etc.) and
measure the AC voltage drop across the resistor.

Reverse the AC plug on the set and repeat AC voltage
measurements for each exposed part. Any reading of

0.45V rms (this corresponds to 0.3mA rms AC.) or
more is excessive and indicates a potential shock
hazard which must be corrected before returning the
DVD video player to the owner.

SSVM

AC SCALE

1.5k ohms.
10W

0.15 µF

TEST PROBE

TO EXPOSED
METAL PARTS

CONNECT TO
KNOWN EARTH
GROUND

1. NOTES DE SERVICE IMPORTANTES

AVANT DE RENDRE LE REPRODUCTOR DE VíDEO
DVD

Avant de rendre le reproductor de vídeo DVD à l’utilisateur,
effectuer les vérifications de sécurité suivantes.

1. Vérifier toutes les gaines de fil pour être sûr que les fils
ne sont pas pincés ou que le matériel n’est pas coincé
entre le châssis et les autres pièces métalliques dans le
reproductor de vídeo DVD.

2. Vérifier tous les dispositifs de protection tels que les
boutons de commande non métalliques, les matériaux
d’isolement, le dos du coffret, les couvercles de
compartiment et ajustement ou les boucliers, les
réseaux de résistance / condensateur d’isolement, Ies
isolateurs mécaniques, etc.

3. Pour être sûr qu’il n’y a aucun risque de choc électrique,
vérifier le courant de fuite de la maniére suivante.

● Brancher le cordon d’alimentation secteur directement
dans une prise de courant de 120 volts. (Ne pas utiliser
de transformateur d’isolement pour cet essai).

● Utiliser deux fils à pinces et connecter une résistance
de 10 watts 1,5 kohm en parallèle avec un condensateur
de 0,15 µF en série avec des pièces du coffret métallique
exposées et une masse de terre connue telle qu’un
tuyau ou un conduit d’eau.

● Utiliser un DVM ou VOM avec une sensibilité de 1000
ohms par volt ou plus ou mesurer la chute de tension
CA entre la résistance (voir diagramme).

● Déposer la connexion de la résistance à toutes les

pièces métalliques exposées ayant un parcours de
retour au châssis (coffret métallique, tétes de vis, bou­tons et arbres de commande, etc.) et mesurer la chute
de tension CA entre la résistance. Inverser la fiche CA
(une fiche intermédiaire non polarisée doit être utilisée
à seule fin de faire ces vérifications.) sur l’appareil et
répéter les mesures de tension CA pour chaque piéce
métallique exposée. Toute lecture de 0,45 V rms (ceci
correspond à 0,3 mA rms CA) ou plus est excessive et
signale un danger de choc qui doit être corrigé avant de
rendre le reproductor de vídeo DVD à son utilisateur.

VTVM

AC SCALE

1.5k ohms
10W

0.15 µF

TEST PROBE

TO EXPOSED
METAL PARTS

CONNECT TO
KNOWN EARTH
GROUND

2

WARNING :TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK, DO NO T EXPOSE

THIS APPLIANCE TO WET LOCATIONS.

CAUTION

RISK OF ELECTRIC SHOCK

DO NOT OPEN

CAUTION: TO REDUCE THE RISK OF ELECTRIC

SHOCK. DO NOT REMOVE COVER. NO
USER·SERVICEABLE PARTS INSIDE.
REFER SERVICING TO QUALIFIED SERVICE
PERSONNEL.

This symbol warns the user of uninsulated
voltage within the unit that can cause danger­ous electric shocks.

This symbol alerts the user that there are
important operating and maintenance instruc­tions in the literature accompanying this unit.

CAUTION

This symbol mark means following.
For continued protection against fire haz­ard, replace only with same type fuse
F901 (4A, 63V)/F902 (4A, 63V) on Power
PWB.
F9901 (1.75A, 32V) on CCFT INV. PWB.
CP9001 (1.6A, 72V)/CP9002 (2A, 72V)
on Power PWB.

1.5A 250V

DV-L88U

ATTENTION:POUR REDUIRE LES RESQUES D'INCENDIE OU DE CHOC ELECTRIQUE,

NE PAS EXPOSER CET APPAREIL A LA PLUIE OU A L'HUMIDITE.

ATTENTION

RISQUE DE CHOC ELECTRIQUE

NE PAS OUVRIR

ATTENTION: AFIN DE REDUIRE LES RISQUES DE

CHOC ELECTRIQUE, NE PAS RETIRER LE
COUVERCLE, AUCUN ORGANE INTERNE
NE PEUT ETRE REPARE PAR
L'UTIUSATEUR, CONFIER L'APPAREIL A
UN DEPANNEUR QUALIFIE.

Ce symbole signale à l'utilisateur la présence
d'une tension non isolée à l'intérieur de l'appareil
qui peut être la cause de secousses électriques
dangereuses.

Ce symbole avertit l'utilisateur que des in­structions importantes relatives à l'utilisation
et àl'entretien se trouvent dans le manuel
accompagnant l'appareil.

ATTENTION

Ce symbole signifie que l'on devra uti­liser un fusible de même type F901 (4A,
63V)/F902 (4A, 63V) on Power PWB .
F9901 (1.75A, 32V) on CCFT INV. PWB.
CP9001(1.6A, 72V)/ CP9002 (2A, 72V)
on Power PWB.

1.5A 250V

Fuse Replacement Marking

4A 63V

On Power PWB Inside of Enclosure LCD front

1.75A 32V

1.6A 72V 2A 72V

On Power PWB

3

DV-L88U

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.

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.

4

2. FEATURES

This DVD video player can play back DVD video discs 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 (supplied)
for outdoor play.

Compact, Lightweight Design

• Your DVD video 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 and *3DTS digital audio. Connecting a Dolby Digital/DTS 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 DVD video player. Or you can use these
jacks to connect to a TV for big-screen viewing.

DV-L88U

*1QSURROUNDTM is a trademark of QSound Labs, Inc.
*2Manufactured under license from Dolby Laboratories. "Dolby", "Pro Logic" 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

Model: DV-L88U

Signal System: NTSC

Supported Disc Types: DVD (Region Number 1, ALL), 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 (357/64") (H) × 176.4 (615/16") (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

S/N Ratio: 60 dB

5

DV-L88U

AC Adapter Specifications

Audio Signals: Frequency Characteristics:

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

4Hz to 44kHz (96kHz sampling)
CD: 4Hz to 20kHz (EIAJ)
S/N Ratio: CD: 96dB 1kHz (EIAJ)
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: 12W average (10W without AC Adapter)

(AC Adapter) Main Power Off: 0.6W (standby) (0.1W without AC Adapter)

Dimensions: 211 (W) × 174 (D) × 42.3 (H) mm (85/16" × 655/64" × 143/64")

(except for projections)

Weight (approx.): 930g (2.05 lbs)

Operating Temperature: 5°C to 35°C (41°F to 95°F)

Operating Humidity: 80% RH maximum

Storage Temperature: -20°C to 40°C (-4°F to 104°F)

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

(21/8" × 355/64" × 13/64")

Weight (approx.): 170g (0.38 lbs)

Battery Pack Specifications

Model: BT-L300U

Type: Lithium-ion type

DC output: 7.4V

Capacity: 5100mAh

Operating temperature: 0°C to 40°C (32°F to 104°F) (charging: 10°C to 30°C (50°F to 86°F))

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

(221/64" × 55/8" × 13/16") without protruding parts

Weight (approx.): 285g (0.63 lbs)

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

Digital Output (Linear PCM)

· The digital output format used in this DVD video 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

6

4. PART NAMES

DV-L88U

DVD Video Player - Right side

S-VIDEO

input/output jack

VIDEO

input/output jack (yellow)

AUDIO (L)

input/output jack (white)

AUDIO (R)

input/output jack (red)

DVD Video Player - Rear

POWER switch

DIGITAL OUT (OPTICAL)/
PHONES jack

DVD Video Player - Front

Display panel

angle range: 0°-180°

180°

0°

(SKIP)

(STILL/PAUSE)

(STOP)

(PLA Y)

LCD screen

Speakers

Disc compartment
cover

SETUP/ADJ.

INPUT/DVD

Cursor buttons
( )
ENTER

RETURN

VOLUME –/

+

OPEN

DC IN jack

DVD Video Player - Bottom

Battery pack compartment (inside)

Battery pack compartment cover

.

“ RELEASE” tab

Indicator lamp

Remote Control Unit

INPUT/DVD

POWER

FUNCTION

TITLE

MENU

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

POWER

FUNCTION

TITLE

MENU

SETUP

VIDEO ADJ.

PROGRAM DISPLAY VIEW MODE

ZOOM

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)

7

DV-L88U

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.

Cabinet A

Cabinet B

1

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

2

4

LCD Unit

4

Main PWB

3

8

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

Power PWB

Shield Plate

Cabinet B

Hinge L

Hinge R

7

8

7

6

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

DV-L88U

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.

5

¤

⁄

Cabinet C

9

DV-L88U

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.

11

9

10

LCD CTL PWB

12

Cabinet D

Inverter Unit

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

25. Remove the one screw r.

26. Remove the one screw t.

27. Remove the two screws 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

13

16

Volume Key

14

15

Cursor Buttons

10

DV-L88U

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

99GFCKWB90751A

CN301

MAIN PWB

CN801

B

to

CN85

B

CN84

QCNW-8557GEZZ

RF&MOTOR

PWB

QCNW-8623GEZZ x2

99GFCKWB90751A

B

to

CN802

B

QCNW-8151GEZZ

QCNW-8562GEZZ

99GFCKWB90751A

CN5001

CN9901

CN82CN86

CN1901

CN1800

CN1802

CN6601

B
to
B

CN81

F
F

C

CN1903

12

10

POWER

CN83

9

CN1801

PWB

CN1902

12

9

CN1904

10

CN1900

QCNW-8564GEZZ

OPERATE

PWB

F

QCNW-8152GEZZ

F

C

LCD CTL PWB

QCNW-8563GEZZ

QCNW-8565GEZZ

DET LCD
CLOSE PWB

QCNW-8566GEZZ

CN4402CN4401

99GFCKWB90751A

QCNW-8624GEZZ x4

11

99GFCKWB90751A

DV-L88U

ADJUSTMENT PROCEDURE AND METHOD OF LCD PWB SIDE

Connect it by using the jig and so on that a LCD PWB is packaged in the set or with the body.

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 15.73±0.1kHz (63.6µS).

frequency counter.

HSY

15.73kHz
(63.6µS)

2Screen center R1914(VR) Visual observation of Monoscope full Adjust the screen so that it is located in the

adjustment the panel. screen. (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.

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. (525/30) 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 it by using the jig and so on that a POWER PWB is packaged in the set or with the body.
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

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

TV1

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

TV1 adjustment

GAM0

OPT

TV2

SBRIGHT GPOS CONT

BAT

TV3

TV2 adjustment

WB-R WB-B SCOLOR STINT

TV3 adjustment

COM OSDH BBRIGHT GAIN

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

12

Adjustment Item Adjustment Menu Adjustment Point Signal/Setting Adjustment Contents

8.0V±0.1

Blue

Black

Red

Green

Yellow

Magenta

Cyan

White

1Sub-bright SBRIGHT Check that the SBRIGHT is “56”.

check

DV-L88U

2Common GPOS

amplitude

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

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

adjustment

3RGB amplitude GAIN

adjustment

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

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

4.0V±0.1

4Gamma0 check GAM0 Check that the GAM0 is “50”.

5Contrast CONT

adjustment

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

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

3.8V±0.1

6White balance WB-R(Red)

adjustment
(Red)

7White balance WB-B(Blue)

adjustment
(Blue)

8Sub tint STINT

adjustment

9Sub color SCOLOR

adjustment

Connect the synchroscope
to 2PIN (VG) and 3PIN
(VR) of TP1900.

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

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

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

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.

100% color bar Make the peak to peak of the yellow, green

and red of the color bar signals stepwise or
same. Place green between yellow and red.

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

signal (white level to yellow peak level) to

3.2±0.1Vpp.

White

3.2V
±0.1

Yellow

13

DV-L88U

Direction of stripe

Adjustment Item Adjustment Menu Adjustment Point Signal/Setting Adjustment Contents
0Confrontation COM Specified adjustment jig No input state When using the specified adjustment jig

bias adjustment (illuminometer) or visual

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

Brightness: Center
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.

Connect the output of jig to the oscilloscope

(Type drawing)

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.

Optimal point

[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”

qOSD 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.

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

standard check

15mm

14

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 (525/30) 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

(525/30) 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.

DV-L88U

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

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

15

DV-L88U

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

5

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

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.

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

DV-L88U

17

DV-L88U

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

[TEST MODE]

Test mode initial image plane
F0000000 00000000

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

<The "1" key of the remote controller is pushed.>

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.

<The "2" key of the remote controller is pushed.>

Color bar display
20000001 00000000 (FIP)

Color bar display
20000002 00000000 (FIP)

Color bar display
20000003 00000000 (FIP)

Color bar display
20000003 00000000 (FIP)

<The "3" key of the remote controller is pushed.>

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

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

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

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

18

From (1)

<The "1" key of the remote controller is pushed.>

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

STEP TEST
30000201 00000000

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

Focus on

The "PLAY" key input.

<The "1" key of the remote controller is pushed.>

<The "1" key of the remote controller is pushed.>

<The "1" key of the remote controller is pushed.>

STEP TEST
DD00E210 EEEEEEEE

DV-L88U

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

When a disk is not in.

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

19

DV-L88U

Personal computer

(DOS)

DVD itself

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

Fixture for the ROM renewal

[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”.)

20