Sharp DV-NC200SS User manual

1
DV-NC200S(S)/DV-NC200(RU)/DV-NC200S(B)
S55J4DV-NC200
SERVICE MANUAL
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.
MODELS
SERVICE MANUAL VCR/DVD COMBINATION MODELS DV-NC200S(S)/DV-NC200(RU)/DV-NC200S(B)
VCR/DVD COMBINATION
This document has been published to be used for
after sales service only.
The contents are subject to change without notice.
SHARP CORPORATION
DV-NC200S(S)
DV-NC200(RU)
DV-NC200S(B)
[ DV-NC200S(S)/
DV-NC200S(B) ]
[ DV-NC200(RU) ]
MAIN SECTION
1. SPECIFICATIONS ................................................................................................................................................ 1-1-1
2. LASER BEAM SAFETY PRECAUTIONS ............................................................................................................. 1-2-1
3. IMPORTANT SAFEGUARDS AND PRECAUTIONS ............................................................................................ 1-3-1
4. STANDARD NOTES FOR SERVICING ................................................................................................................ 1-4-1
5. PREPARATION FOR SERVICING ....................................................................................................................... 1-5-1
6. OPERATING CONTROLS AND FUNCTIONS...................................................................................................... 1-6-1
7. CABINET DISASSEMBLY INSTRUCTIONS ........................................................................................................ 1-7-1
8. HOW TO INITIALIZE THE DVD PLAYER & VCR ................................................................................................. 1-8-1
9. ELECTRICAL ADJUSTMENT INSTRUCTIONS ................................................................................................... 1-9-1
10. FIRMWARE RENEWAL MODE (FIRMWARE VERSION UP) ............................................................................ 1-10-1
11. TROUBLESHOOTING ........................................................................................................................................ 1-11-1
12. FUNCTION INDICATOR SYMBOLS................................................................................................................... 1-12-1
13. BLOCK DIAGRAMS ............................................................................................................................................ 1-13-1
14. SCHEMATIC DIAGRAMS/ CBA’S AND TEST POINTS ..................................................................................... 1-14-1
15. WAVEFORMS ..................................................................................................................................................... 1-15-1
16. WIRING DIAGRAM ............................................................................................................................................. 1-16-1
17. IC PIN FUNCTION DESCRIPTIONS .................................................................................................................. 1-17-1
18. LEAD IDENTIFICATIONS ................................................................................................................................... 1-18-1
19. EXPLODED VIEWS ............................................................................................................................................ 1-19-1
20. MECHANICAL PARTS LIST ............................................................................................................................... 1-20-1
21. ELECTRICAL PARTS LIST ................................................................................................................................ 1-21-1
DECK MECHANISM SECTION
1. STANDARD MAINTENANCE ............................................................................................................................... 2-1-1
2. SERVICE FIXTURE AND TOOLS ........................................................................................................................ 2-2-1
3. MECHANICAL ALIGNMENT PROCEDURES ...................................................................................................... 2-3-1
4. DISASSEMBLY / ASSEMBLY PROCEDURES OF DECK MECHANISM ............................................................ 2-4-1
5. ALIGNMENT PROCEDURES OF MECHANISM .................................................................................................. 2-5-1
6. DECK EXPLODED VIEWS ................................................................................................................................... 2-6-1
7. DECK PARTS LIST ............................................................................................................................................... 2-7-1
CONTENTS

MAIN SECTION
VCR/DVD COMBINATION
DV-NC200S(S)/DV-NC200(RU)/DV-NC200S(B)
TABLE OF CONTENTS
1. SPECIFICATIONS .......................................................................................... 1-1-1
2. LASER BEAM SAFETY PRECAUTIONS ....................................................... 1-2-1
3. IMPORTANT SAFEGUARDS AND PRECAUTIONS ...................................... 1-3-1
4. STANDARD NOTES FOR SERVICING .......................................................... 1-4-1
5. PREPARATION FOR SERVICING ................................................................. 1-5-1
6. OPERATING CONTROLS AND FUNCTIONS ................................................ 1-6-1
7. CABINET DISASSEMBLY INSTRUCTIONS .................................................. 1-7-1
8. HOW TO INITIALIZE THE DVD PLAYER & VCR ........................................... 1-8-1
9. ELECTRICAL ADJUSTMENT INSTRUCTIONS ............................................. 1-9-1
10. FIRMWARE RENEWAL MODE (FIRMWARE VERSION UP) ...................... 1-10-1
11. TROUBLESHOOTING .................................................................................. 1-11-1
12. FUNCTION INDICATOR SYMBOLS ............................................................. 1-12-1
13. BLOCK DIAGRAMS ...................................................................................... 1-13-1
14. SCHEMATIC DIAGRAMS/ CBA’S AND TEST POINTS ............................... 1-14-1
15. WAVEFORMS ............................................................................................... 1-15-1
16. WIRING DIAGRAM ....................................................................................... 1-16-1
17. IC PIN FUNCTION DESCRIPTIONS ............................................................ 1-17-1
18. LEAD IDENTIFICATIONS ............................................................................. 1-18-1
19. EXPLODED VIEWS ...................................................................................... 1-19-1
20. MECHANICAL PARTS LIST ......................................................................... 1-20-1
21. ELECTRICAL PARTS LIST ........................................................................... 1-21-1

1-1-1 H9941SP
SPECIFICATIONS
Description Unit Minimum Nominal Maximum Remark
1. Video
1-1. Video Output (PB)Vp-p 0.8 1 1.2 9HSFL6A
9HSFL6M
W/O Burst
9HSFL6A
9HSFL6K
9HSFL6HA
1-2. Video Output (R/P)Vp-p 0.8 1 1.2
1-3. Video S/N Y (R/P)dB 40 43
1-4. Video Color S/N AM (R/P)dB 35 41
1-5. Video Color S/N PM (R/P)dB 33 38
1-6. Resolution (PB)Line 210 230
2. Servo
2-1. Jitter Low µsec 0.07 0.12
2-2. Wow & Flutter % 0.3 0.6
3. Normal Audio
3-1. Output (PB)dBV -9 -4 -2
3-2. Output (R/P)dBV -9 -4 -1
3-3. S/N (R/P)dB 36 40
3-4. Distortion (R/P)% 1.5 4
3-5. Freq. resp (R/P) at 200Hz (PB)dB -6 -3
(-20dB ref. 1kHz) at 8kHz (PB)dB -6 -3
5
5
4. Tuner
4-1. Video output Vp-p 0.8 1 1.2
4-2. Video S/N dB 40 45
4-3. Audio output dB -10 -6 -2
4-4. Audio S/N dB 40 50
5. Hi-Fi Audio
5-1. Output (PB)dBV -12 -9 -6
5-2. Dynamic Range dB 70 80
5-3. Freq. resp (6dB B.W)Hz 20 ~ 20K
< VCR Section >
TAPE SPEED: SP
Notes:
1. Nominal specs represent the design specs. All units should be able to approximate these – some will exceed and
some may drop slightly below these specs. Limit specs represent the absolute worst condition that still might be
considered acceptable; In no case should a unit fail to meet limit specs.
2. For test tapes, refer to "SERVICE FIXTURE AND TOOLS" section.

1-1-2 H9941SP
NOTES:
1. All Items are measured without pre-emphasis unless otherwise specified.
2. Power supply : AC220 V - 240 V ~ 50Hz
3. Room ambient : 5 °C ~ 40 °C
4. Power consumption: 25 W (Standby: 5.5 W)
5. Weight: 6.84 lbs (3.2kg)
6. Dimension: 435 mm X 94 mm X 233 mm
< DVD Section >
ITEM CONDITIONS UNIT NOMINAL LIMIT
1 Video Output 75 Ωload Vpp 1.0 ±0.1
2 Coaxial Digital Out mVpp 500
3 Audio (PCM)
3-1. Output Level 1 kHz, 0 dB, 47k Ωload Vrm 2.0
3-2. S/N 47k Ωload dB 90
3-3. Freq. Response
DVD fs = 48 kHz ±0.5 dB, 47k Ωload Hz 20 ~ 20 kHz
CD fs = 44.1 kHz ±0.5 dB, 47k Ωload Hz 20 ~ 20 kHz
3-4. THD +N
DVD 1k Hz, 0 dB, 47k Ωload % 0.03
CD 1k Hz, 0 dB, 47k Ωload % 0.03

1-2-1 E6PLSP
LASER BEAM SAFETY PRECAUTIONS
This DVD player uses a pickup that emits a laser beam.
Do not look directly at the laser beam coming
from the pickup or allow it to strike against
your skin.
The laser beam is emitted from the location shown in the figure. When checking the laser diode, be sure to keep your
eyes at least 30cm away from the pickup lens when the diode is turned on. Do not look directly at the laser beam.
Caution: Use of controls and adjustments, or doing procedures other than those specified herein, may result in
hazardous radiation exposure.
Drive Mechanism Assembly
Laser Beam Radiation
Laser Pickup
Turntable
CAUTION - CLASS 1M LASER RADIA -
-
TION WHEN OPEN. DO NOT VIEW
DIRECTLY WITH OPTICAL INSTRUMENTS
Location: Top of DVD mechanism

1-3-1 E5752IMP
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, isola-
tion resistor/capacitor networks, mechanical insula-
tors 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 230 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
1.4V rms (this corresponds to 0.7mA 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.
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 230 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, bou-
tons 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 1,4 V rms (ceci
correspond à 0,7 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.
IMPORTANT SAFEGUARDS AND PRECAUTIONS
VTVM
AC SCALE
1.5k ohms
10W
CONNECT TO
KNOWN EARTH
GROUND
TO EXPOSED
METAL PARTS
TEST PROBE
0.15 F
SSVM
AC SCALE
2k ohms.
10W
0.15
TEST PROBE
TO EXPOSED
METAL PARTS
CONNECT TO
KNOWN EARTH
GROUNG
F

1-4-1 DVD_NOTE2
Circuit Board Indications
a. The output pin of the 3 pin Regulator ICs is indicated
as shown.
Top View
Out In
Bottom View
Input
b. For other ICs, pin 1 and every fifth pin are indicated
as shown.
5
10
Pin 1
< Bottom View >
c. The 1st pin of every male connector is indicated as
shown.
Pin 1
< Bottom View >
Instructions for Connectors
1. When you connect or disconnect the FFC (Flexible
Foil Connector) cable, be sure to first disconnect the
AC cord.
2. FFC (Flexible Foil Connector) cable should be in-
serted parallel into the connector, not at an angle.
FFC Cable
Connector
CBA
* Be careful to avoid a short circuit.
Using lead-free wire solder
When fixing the PWB soldered with the lead-free solder,
apply lead-free wire solder. Repairing with conventional
lead wire solder may cause damage or accident due to
cracks.
As the melting point of lead-free solder (Sn-Ag-Cu) is
higher than the lead wire solder by 40°C, we recommend
you to use a dedicated soldering bit, if you are not
familiar with how to obtain lead-free wire solder or
soldering bit, contact our service station or service
branch in your area.
Soldering
As the melting point of lead-free solder (Sn-Ag-Cu) is
about 220°C which is higher than the conventional lead
solder by 40°C, and as it has poor solder wettability, you
may be apt to keep the soldering bit in contact with the
PWB for extended period of time. However, Since the
land may be peeled off or the maximum heat-resistance
temperature of parts may be exceeded, remove the bit
from the PWB as soon as you confirm the steady
soldering condition.
Lead-free solder contains more tin, and the end of the
soldering bit may be easily corroded. Make sure to turn
on and off the power of the bit as required.
If a different type of solder stays on the tip of the
soldering bit, it is alloyed with lead-free solder. Clean
the bit after every use of it.
When the tip of the soldering bit is blackened during
use, file it with steel wool or fine sandpaper.
Be careful when replacing parts with polarity indication
on the PWB silk.
Lead-free wire solder for servicing
STANDARD NOTES FOR SERVICING
Part No. Description Code
ZHNDAi123250E J 0.3mm 250g(1roll) BL
ZHNDAi126500E J 0.6mm 500g(1roll) BK
ZHNDAi12801KE J 1.0mm 1kg(1roll) BM

1-4-2 DVD_NOTE2
How to Remove / Install Flat Pack-IC
1. Removal
With Hot-Air Flat Pack-IC Desoldering Machine:
(1) Prepare the hot-air flat pack-IC desoldering ma-
chine, then apply hot air to the Flat Pack-IC (about 5
to 6 seconds). (Fig. S-1-1)
Fig. S-1-1
(2) Remove the flat pack-IC with tweezers while apply-
ing the hot air.
(3) Bottom of the flat pack-IC is fixed with glue to the
CBA; when removing entire flat pack-IC, first apply
soldering iron to center of the flat pack-IC and heat
up. Then remove (glue will be melted). (Fig. S-1-6)
(4) Release the flat pack-IC from the CBA using twee-
zers. (Fig. S-1-6)
Caution:
1. Do not supply hot air to the chip parts around the flat
pack-IC for over 6 seconds because damage to the
chip parts may occur. Put masking tape around the
flat pack-IC to protect other parts from damage.
(Fig. S-1-2)
2. The flat pack-IC on the CBA is affixed with glue, so
be careful not to break or damage the foil of each pin
or the solder lands under the IC when removing it.
Hot-air
Flat Pack-IC
Desoldering
Machine
CBA
Flat Pack-IC
Tweezers
Masking
Tape
Fig. S-1-2
With Soldering Iron:
(1) Using desoldering braid, remove the solder from all
pins of the flat pack-IC. When you use solder flux
which is applied to all pins of the flat pack-IC, you can
remove it easily. (Fig. S-1-3)
Flat Pack-IC Desoldering Braid
Soldering Iron
Fig. S-1-3
(2) Lift each lead of the flat pack-IC upward one by one,
using a sharp pin or wire to which solder will not
adhere (iron wire). When heating the pins, use a fine
tip soldering iron or a hot air desoldering machine.
(Fig. S-1-4)
Fine Tip
Soldering Iron
Sharp
Pin
Fig. S-1-4
(3) Bottom of the flat pack-IC is fixed with glue to the
CBA; when removing entire flat pack-IC, first apply
soldering iron to center of the flat pack-IC and heat
up. Then remove (glue will be melted). (Fig. S-1-6)
(4) Release the flat pack-IC from the CBA using twee-
zers. (Fig. S-1-6)
With Iron Wire:
(1) Using desoldering braid, remove the solder from all
pins of the flat pack-IC. When you use solder flux
which is applied to all pins of the flat pack-IC, you can
remove it easily. (Fig. S-1-3)
(2) Affix the wire to a workbench or solid mounting point,
as shown in Fig. S-1-5.
(3) While heating the pins using a fine tip soldering iron
or hot air blower, pull up the wire as the solder melts
so as to lift the IC leads from the CBA contact pads
as shown in Fig. S-1-5.

1-4-3 DVD_NOTE2
(4) Bottom of the flat pack-IC is fixed with glue to the
CBA; when removing entire flat pack-IC, first apply
soldering iron to center of the flat pack-IC and heat
up. Then remove (glue will be melted). (Fig. S-1-6)
(5) Release the flat pack-IC from the CBA using twee-
zers. (Fig. S-1-6)
Note:
When using a soldering iron, care must be taken to
ensure that the flat pack-IC is not being held by glue.
When the flat pack-IC is removed from the CBA,
handle it gently because it may be damaged if force
is applied.
To Solid
Mounting Point
Soldering Iron
Iron Wire
or
Hot Air Blower
Fig. S-1-5
Fine Tip
Soldeing Iron
CBA
Flat Pack-IC
Tweezers
Fig. S-1-6
2. Installation
(1) Using desoldering braid, remove the solder from the
foil of each pin of the flat pack-IC on the CBA so you
can install a replacement flat pack-IC more easily.
(2) The “ ” mark on the flat pack-IC indicates pin 1. (See
Fig. S-1-7.) Be sure this mark matches the 1 on the
PCB when positioning for installation. Then presolder
the four corners of the flat pack-IC. (See Fig. S-1-8.)
(3) Solder all pins of the flat pack-IC. Be sure that none
of the pins have solder bridges.
Example :
Pin 1 of the Flat Pack-IC
is indicated by a " " mark. Fig. S-1-7
Presolder
CBA
Flat Pack-IC
Fig. S-1-8

1-4-4 DVD_NOTE2
Instructions for Handling
Semi-conductors
Electrostatic breakdown of the semi-conductors may
occur due to a potential difference caused by electrostatic
charge during unpacking or repair work.
1. Ground for Human Body
Be sure to wear a grounding band (1MΩ) that is properly
grounded to remove any static electricity that may be
charged on the body.
2. Ground for Workbench
Be sure to place a conductive sheet or copper plate with
proper grounding (1MΩ) on the workbench or other
surface, where the semi-conductors are to be placed.
Because the static electricity charge on clothing will not
escape through the body grounding band, be careful to
avoid contacting semi-conductors with your clothing.
CBA
< Incorrect >
CBA
Grounding Band
Conductive Sheet or
Copper Plate
< Correct >

1-5-1 H9945PFS
How to Enter the Service Mode
About Optical Sensors
Caution:
An optical sensor system is used for the Tape Start and
End Sensors on this equipment. Carefully read and
follow the instructions below. Otherwise the unit may
operate erratically.
What to do for preparation
Insert a tape into the Deck Mechanism Assembly and
press the PLAY button. The tape will be loaded into the
Deck Mechanism Assembly. Make sure the power is on,
connect TP501 (S-INH) to GND. This will stop the
function of Tape Start Sensor, Tape End Sensor and
Reel Sensors. (If these TPs are connected before
plugging in the unit, the function of the sensors will stay
valid.) See Fig. 1.
Note: Because the Tape End Sensors are inactive, do
not run a tape all the way to the start or the end of the
tape to avoid tape damage.
PREPARATION FOR SERVICING
Q504
Q503
TP501 S-INH
Fig. 1

1-6-1 H9941IB
OPERATING CONTROLS AND FUNCTIONS
[ DV-NC200S(S) ]

1-6-2 H9941IB

1-6-3 H9941IB

1-6-4 H9941IB

1-6-5 H9941IB
[ DV-NC200(RU) ]

1-6-6 H9941IB
a

1-6-7 H9941IB

1-6-8 H9941IB

1-6-9 H9941IB
[ DV-NC200S(B) ]