SHARP VLWD650U Service Manual
SERVICE MANUAL
VL-WD650U
SERVICE MANUAL
S21P4VL-WD650
LIQUID CRYSTAL DIGITAL CAMCORDER NTSC
LIQUID CRYSTAL DIGITAL CAMCORDER
1. IMPORTANT SERVICE NOTES ........................................................................................................ 2
2. SPECIFICATIONS.............................................................................................................................. 5
3. PART NAMES ................................................................................................................... ................. 6
4. DISASSEMBLY OF THE SET ............................................................................................................ 7
5. MECHANISM ADJUSTMENT JIGS AND PARTS.............................................................................. 9
6. INSPECTION AND MAINTENANCE
ITEMS AND INTERVALS ................................................................................................................. 10
NTSC
MODEL VL-WD650U
7. MECHANICAL ADJUSTMENTS AND CHECKS.............................................................................. 11
8. TAPE RUNNING ADJUSTMENT ..................................................................................................... 14
9. MECHANICAL SECTION ASSEMBLY AND PARTS REPLACEMENT
(DISASSEMBLY AND REASSENBLY) ........................................................................................... 16
10.ADJUSTING THE ELECTRICAL CIRCUITS.................................................................................... 23
11.USEFUL TIPS................................................................................................................................... 42
12.SIGNAL FLOW DIAGRAMS ............................................................................................................. 43
13.BLOCK DIAGRAMS ......................................................................................................................... 46
14.SCHEMATIC DIAGRAMS ................................................................................................................ 52
15.SEMICONDUCTOR LEAD IDENTIFICATION ............................................................................... 110
16.PRINTED WIRING BOARD ASSEMBLIES.................................................................................... 112
17.REPLACEMENT PARTS LIST ....................................................................................................... 141
18.PACKING OF THE SET ................................................................................................................. 161
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.
CONTENTS
VL-WD650U
Page
SHARP CORPORATION
This document has been published to be used for
after sales service only.
The contents are subject to change without notice.
1
VL-WD650U
VTVM
AC SCALE
1.5k ohms
10W
CONNECT TO
KNOWN EARTH
GROUND
TO EXPOSED
METAL PARTS
0.15 µF
TEST PROBE
0.15 µF
SONDE D'ESSAI
VERS PIECES
METALLIQUES
EXPOSEES
VTVM
ECHELLE CA
1.5KOHMS
10W
CONNECTER A
UNE MASSE DE
TERRE CONNUE
1. IMPORTANT SERVICE NOTES
BEFORE RETURNING THE VIDEO CAMERA
RECORDER
Before returning the video camera recorder 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 video camera
recorder.
2. Inspect all protective devices such as non-metallic
control knobs, insulating 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
leakage 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 l.5k ohm, 10 watt resistor
paralleled by a 0.15µF capacitor in series with all
exposed metal cabinet parts and a known ground,
such as a water pipe or conduit.
· Use a VTVM 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 all exposed metal
parts having a return path to the chassis (antenna
connections, metal cabinet, screw heads, knobs and
control shafts, etc.) and measure the AC voltage drop
across the resistor. Reverse the AC plug (a non
polarized adaptor plug must be used but only for the
purpose of completing these checks) on the set and
repeat the AC voltage measurements for each exposed metallic 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 video camera recorder
to the user.
AVANT DE RENDRE LE MAGNETOSCOPE
Avant de rendre le magnétoscope 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
magnétoscope.
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 VTVM 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
1. NOTES DE SERVICE IMPORTANTES
retour au châssis (connexions d’antenne, 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 magnétoscope à son
utilisateur.
2
VL-WD650U
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.
(CP1; 1.2A 72V, CP3; 1.2A 72V)
Camcorder
only
ATTENTION:POUR REDUIRE LES RESQUES D'INCENDIE OU DE CHOC ELECTRIQUE,
NE PAS EXPOSER CET APP AREIL 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 (CP1; 1,2A
72V, CP3; 1,2A 72V) pour assurer la
sécurité.
Camcorder
seulement
3
VL-WD650U
The following program is available in the United States. Please consult local environmental
authorities concerning the availability of this or other programs in your area.
CAUTION
BEFORE BATTERY DESTROY
NICKEL-CADMIUM BATTERY
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 commitment to protecting
our environment and conserving natural resources.
[Footnote] *RBRCTM is trademark of the Rechargeable Battery Recycling Corporation.
NICKEL-METAL HYDRIDE BATTERY
LITHIUM or LITHIUM-ION BATTERY
SEALED 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.
4
2. SPECIFICATIONS
Signal System: NTSC standard
Recording System: 2 rotary heads, helical scanning system
Cassette: Digital VCR Mini DV video cassette
Recording/Playback Time: 90 minutes (DVM60, LP mode)
Tape Speed: SP mode: 18.812 mm/second
LP mode: 12.555 mm/second
Pickup Device:1/4" (6.4 mm, effective size: 4.5 mm) CCD image sensor
(with approx. 460,000 pixels including optical black)
Lens: 26 × optical/780 × digital power zoom lens (F1.6, f=3.5-91.0 mm), full-range auto
focus
Lens Filter Diameter: 37 mm
Viewfinder: Electronic LCD color viewfinder
Monitor: 3" (7.5 cm) full-color LCD screen (TFT active matrix)
Microphone: Electret stereo microphone
Color Temperature Compensation: Auto white balance with white balance lock
Minimum Illumination: 1 lux (9 lux measured by EIA standard)(with gain-up, F1.6)
Still Image Compression
System/Recording Format: JPEG base line conformance/JPEG (Exif2.1)
Still Image Recording Medium: 3.3V type SmartMediaTM card (SSFDC)
Power Requirement: DC 7.4 V
Power Consumption: 4.0 W (during camera recording using the viewfinder in Full Auto mode with zoom
motor off)
5.1 W (during camera recording using the LCD monitor in Full Auto mode with
zoom motor off and backlight in normal mode)
Operating Temperature: 32°F to 104°F (0°C to +40°C)
Operating Humidity: 30% to 80%
Storage Temperature: –4°F to 140°F (–20°C to +60°C)
Dimensions (approx.): 3 11/16" (W) × 4 21/32" (H) × 7 11/32" (D)
[93.7 mm (W) × 118 mm (H) × 186.5 mm (D)]
Weight (approx.): 1.62 lbs (735 g)
(without battery pack, lithium battery, video cassette and lens cap)
VL-WD650U
AC Adapter/Battery Charger
(UADP-0321TAZZ)(WD650U)
(U ADP-0328TAZZ)(WD650UK)
Power Requirement: AC 110-240 V, 50/60 Hz
DC Output: 7.3 V
Power Consumption: 23 W
Dimensions (approx.): 2 23/32" (W) × 1 11/16" (H) × 4 7/16" (D)
[69 mm (W) × 43 mm (H) × 113 mm (D)]
Weight (approx.): 0.35 lbs (160 g)
SmartMediaTM Card (Supplied Accessory)
Memory Capacity: 8 MB
Memory Type: NAND flash EEP-ROM
Power Requirement: 3.3 V
Operating Temperature: 32°F to 104°F (0°C to +40°C)
Storage Temperature: –4°F to 149°F (–20°C to +65°C)
Specifications are subject to change without notice.
SERVICE INFORMATION (For the U.S.)
For the location of the nearest Sharp Authorized Service, or to obtain product literature, accessories,
supplies or customer assistance, please call 1-800-BE SHARP (1-800-237-4277) or visit SHARP's
website (http://www.sharp-usa.com)
5
VL-WD650U
S-VIDEO socket
VIDEO jack
AUDIO L jack
AUDIO R jack
STILL button
Power Zoom Wide angle/
Telephoto control/VOLume control
Jack cover
RECord START/STOP button
Power switch (CAMERA/VCR
select switch)
Shoulder strap
loop
Cassette compartment door
Cassette compartment door release
PC connection jack
DV terminal
EarPHONES jack
Jack cover
Speaker
Hand strap
Right view
3. PART NAMES
For details on the use of each control.
Left view
W/B (White Balance) button/
IR (Infrared) LIGHT button
SUPER CAT'S EYE switch
Lens hood
Zoom lens
Infrared light transmitter/
Remote sensor
Stereo microphone
GAMMA/BRIGHTER button
AUTO ON/OFF button
Operation button
MENU/DISPLAY button
Media Selection switch (TAPE/CARD
selection switch)
LCD monitor
OPEN release
button
Left view
Zoom microphone
mounting hole
LCD monitor
Bottom view
Viewfinder
Lithium battery
compartment door
Shoulder strap loop
Diopter adjustment
Power source
PUSH release
button
Power source
mounting surface
Card slot cover
Tripod socket
6
4. DISASSEMBLY OF THE SET
(b)
(b)
(b)
Operation PWB
connector
LCD FPC 1, 2
Joint main FPC
Turn SW connector
Note:
Before removing the cabinet, turn off the power supply, and ascertain that the battery have been removed.
VL-WD650U
1.
(d)
(d)
(d)
1) Remove the screws ((c)XiPSF17P04000)(5 pcs.) and ((b)LXHZ0063TAFF)(1 pc.) on the bottom cover to remove the bottom
cover.
2) The screws ((d)XiPSN17P04000)(2 pcs.), ((b)LX-HZ0063TAFF)(1
pc.) and ((e)LX-HZ0063TAFN)(1 pc.) on the front cover, and open
the front cover. Then disconnect the connector of the microphone.
3) Remove the screws ((d)XiPSN17P04000)(3 pcs.) fixing the shoe
angle to remove the shoe angle. Remove the connector of the
zoom microphone which is located in the front, and then slide the
top side cover forward and lift it up to remove it.
(e)
(b)
(b)
(c)
3.
1) Disconnect the connector of the turn SW.
2) Remove the joint main FPC.
3) Remove the LCD FPCs (2 sheets), and lift up the cabinet B ass'y.
4.
2.
(d)
(b)
(d)
(c)
(b)
1) Turn the V/F, and then remove the screws ((b)LX-HZ0063TAFF)(7
pcs.) and ((c)XiPSF17P04000)(1 pc.) fixing the battery cover.
Disconnect the connector of the battery terminal on the bottom.
2) Remove the screws ((d)XiPSN17P04000)( 4 pcs.) on the top
side and the screw ((d)XiPSN17P04000)(1 pc.) on the side.
1) Remove the screws ((b)LX-HZ0063TAFF)(5 pcs.) to remove
the joint PWB.
2) Disconnect the connector of the operation PWB.
3) Remove the screws ((b)LX-HZ0063TAFF)(3 pcs.) to remove
the operation PWB.
5.
(d)
(d)
1) Disconnect the connectors (2 pcs.) of the lens, remove the
screw ((d)XiPSN17P04000)(1 pc.), and lift it up.
2) Disconnect the connector of the V/F, remove the screw ((d)
XiPSN17P04000)(1 pc.), and lift up the V/F unit to remove it.
7
VL-WD650U
(l)
(l)
(a)
(d)
(c)
(d)
(d)
(c)
(`)
(`)
6.
(c)
(c)
1) Disconnect the B TO B connector of the DV main FPC,
disconnect the front and rear FPC connectors, and remove the
screws ((c)XiPSF17P04000)(2 pcs.) to remove the main PWB.
7.
(b)
(b)
9.
1) Remove the screw ((a)LX-BZ0221TAFC)(1 pc.) to remove
the cassette lid.
10.
(d)
(d)
(c)
(b)
1) Remove the screws ((b)LX-HZ0063TAFF)(5 pcs.), and remove the mechanism together with the mechanism PWB
fitting angle.
8.
(b)
(b)
1) Remove the screws ((b)LX-HZ0063TAFF)(2 pcs.) to remove
the speaker cover.
2) Disconnect the connector of the speaker to remove the speaker.
3) Remove the screws ((d)XiPSN17P04000)(2 pcs.) and the screw
((c)XiPSF17P04000)(1 pc.), and remove the DV terminal PWB
together with the stay front ass'y.
11.
1) Remove the screws ((l)LX-HZ0017TAFF)(2 pcs.) to remove
the LCD ass'y.
12.
1) Remove the screws ((b)LX-HZ0063TAFF)(3 pcs.) to remove
the zoom switch unit and AV terminal.
1) The shaft (` section) of the LCD tilt unit is rotated in the arrow
direction 90°.
2) Turn the LCD tilt unit so as to verticalize it to the LCD cabinet.
3) Remove the fixing screws ((c)XiPSF17P04000)( 2 pcs.) and
((d)XiPSN17P04000)(3 pcs.).
8
VL-WD650U
5. MECHANISM ADJUSTMENT JIGS AND PARTS
5-1. Mechanism check adjustment jigs
1. PB-use cassette
Torque meter
2. 9DASD-1015
3. DB
* 1mN·m/1.5mN·m
50 or more
ø2
No. 0 cross-bit
No. 00 cross-bit
1. Torque screwdriver
150mN·m
2. JiGTD1500RTDH
3. CB
1. Torque gauge
2. JiGTG0045
3. CN
*
For use in VS-REW wind-
ing torque measurement.
1. Master plane
2. 9EQMP-VLPD1
3. CL
* For checking reel base
height.
1. Torque gauge head
2. 9EQTGH-DH5000
3. BW
* For use with the follow-
ing torque gauge.
1. Height adjustment jig
2. 9DAHG-PD1
3. BZ
* For height adjusting.
<Note: The entries of list>
1. Tension gauge 4N
2. JiGSG0400
3. BK
* For measurement of
pinch roller pressure.
1. Height adjustment
screwdriver
2. 9EQDRiVER-DH5
3. BC
*
For guide roller adjustment.
Configuration
1. Name
2. Part No.
3. Code
* Model, Uses Remarks
1. Dial tension gauge
2. 9DAPTG-10-10W
3. CA
* PTG-10
*
For Tu guide adjustment.
*
For T roller adjustment.
*
Bit shape (see figure below).
Tolerance ± 0.1
2
1.4
Tip thickness 0.5
3
<Miscellaneous>
(1) Slide caliper
(2) Precision screwdrivers
1. Alignment tape – ( I )
2. VR3-GAZXS
3. CF
*
For tape running
adjustment.
1. Alignment tape – ( II )
2. VR3-GTZQS
3. CG
*
For SW point adjustment.
* 90ADVC-TAPE can use,
too.
1. For hexagon nut
opposite side 3mm bit.
2. 95CM22001
3. BL
* For S guide hexagon
nut installation.
(Phillips head and slotted)
(3) Radio needle-nose pliers
(4) Tweezers
5-2. Parts for regular periodic inspection and maintenance
1. Oil
Cosmo Hydro HV22
2. 9EQ-Oil-HV22
3. AE
* Cosmo Petroleum K.K.
1. Cleaning paper
2. JiGDUSPER
3. AP
* DUSPER ∑ (SIGMA)
(ozu Co., LTD.)
<How to make jigs for mechanism checking and adjustment>
(1)Reel hub for back tension measurement (Fig. 1)
1) Obtain a commercially available cassette tape reel hub.
(Disassemble the cassette tape and remove the tape from
the reel hub.)
2) Paste one end of a string (about 20cm long) to the reel hub
with (for example) cellophane tape.
3) Paste the weight of about 0.21N on the upper side reel hub.
(2)String for use in pinch roller snap-fit force measurement (Fig. 2)
1) Obtain an approximately 20cm length of commercially available string.
2) Tie the 2 ends together to form a loop.
1. Grease: Moly Coat
YM-103
2. 99FGREASE-YM103
* Dow craning
1. Screw lock (1401B)
* Three Bond
<Note:
The entries of list>
1. Cleaning liquid:
industrial-use ethyl alcohol
* Commercially available item
1. Extremely thin cotton swab
* Commercially available item
Weight
Reel hub
Fig. 1
Configuration
1. Name
2. Part No.
3. Code
* Model, Uses Remarks
String
String
Fig. 2
9
VL-WD650U
6. INSPECTION AND MAINTENANCE ITEMS AND INTERVALS
In order to keep the mechanical section always in good condition, perform the following inspection and maintenance at regular intervals.
In addition, after repair, perform the following maintenance items regardless of how long the user has been using the unit.
6-1. List of inspection and maintenance items
Inspection and
maintenance location
Tape running section (see section 8-3)
Drum section, Video head
(see section 8-3)
Tape running system
Timing belt
Pinch roller
Capstan motor
Swing arm
S reel base, Tu reel base
Center pulley shaft
Intermediate pulley shaft
Swing arm boss
Drive system
Intermediate gear A shaft,
Intermediate gear B shaft
Loading motor
Mode switch
Abnormal noise
PB · VS/R winding torque
PB · VS/R · loading back tension
Tu reel base ratchet torque
S reel base no-load torque
Performance checks
500 1,000 1,500 2,000 3,000
<Rollers>
• Replace if there is anything abnormal in the rotation, or if there is run-out
(that becomes large).
<Other than the above>
• Clean the section that contacts the tape (especially the lower drum helical
section). Use the specified cleaning liquid.
Time of use (h)
[Oil] Cosmo Hydro HV22
[Grease] Moly Coat YM-103
• • • Replace. • • • Clean. • • • Lubricate. • • • Check.
Symptoms that indicate
need for maintenance
• Block-type noise
• Head hole clogging
• Tape damage
• The tape fails to run.
• The tape becomes slack.
• Block-type noise
• Abnormal noise
• Abnormal noise
• Cannot eject.
• Fails to enter a mode.
• The tape fails to run.
• The tape becomes slack.
• Tape damage
• The play-back image is
abnormal.
[Screw lock] Three Bond 1401B
[Cleaning liquid] Industrial-use ethyl alcohol
Note:
Replace the drum ass'y if the
video head is cleaned but the
envelope still does not appear.
(When the envelope is normal,
refer to "11. USEFUL TIPS".)
• Replace if there is anything
abnormal.
• Lubricate with oil.
[Oil]
Cosmo Hydro HV22
Note:
• Replace if anything is abnormal
(including the noise).
• Replace any part that fails to
perform within the standard.
Remarks
Apply oil to the shaft, then
wipe lightly with a cloth.
6-2. Precautions
(1) When replacing any part, always replace the cut washer that was
removed with a new one.
(2) This mechanism does not have control adjustment. If the control
cannot be set as required, clean and or replace parts.
(3)On the oil
a) Always use the specified oil. (Using another kind of oil can cause
various kinds of trouble.)
b) Always use clean oil, without any mixed-in dirt, to lubricate bearings.
(Using oil with dirt mixed in can cause the bearings to wear or to
stick.)
c) One drop of oil is the amount shown in the Fig. 1, on the point of a
pin.
(4)Perform circuit repair, tape running adjustment, etc. with the cassette
controller assembly attached to the mechanism.
(5)When operating the mechanism separately, apply voltage to the
loading motor. However, the terminal voltage must be DC3V~4V.
(When the mechanism is connected to the main PWB, do not apply
external voltage to the loading motor. It may cause a trouble.)
(Forcing the gears to turn by hand entails danger of breakage.)
If the mechanism is separated from the unit, the capstan motor may rub
and be damaged if spacing under the mechanism is inadequate.
(6)To install the cassette controller, push section A in the Fig. 2. Do not
push anything else.
(7)Do not deform any of the mechanical parts.
Oil
1.5mm diameter or less
Fig. 1
10
A
Fig. 2
VL-WD650U
7. MECHANICAL ADJUSTMENTS AND CHECKS
The items discussed here relate to general on-site servicing (field servicing). Adjustments and replacements that require
sophisticated facilities, jigs and technology are omitted.
In addition, in order to maintain the characteristics that the unit has when it is new, not only are inspection and maintenance necessary,
but it is absolutely necessary that, for example, the tape not be damaged, and always use jigs for adjustments that require them.
<Precautions>
(1)Always set the power supply and state of the unit as follows Notes for mechanism adjustments and checks.
AC adapter used, with cassette controller assembly
AC adapter used, without cassette controller assembly (Independent Mechanism)
DC3V, without cassette controller assembly (Independent Mechanism)
(2) When the mechanism is connected to the main PWB, do not apply external voltage to the loading motor. It may cause a trouble.
(3) Always run the tape with the cassette controller assembly attached.
7-1. Checking the playback (recording) winding torque AC adapter used, with cassette controller assembly
(1)Set the torque cassette with the cassette controller assembly attached, then, in SP recording mode (playback mode if a signal has
already been recorded in SP mode on the tape), confirm that the torque on the winding side is within the standard.
<Winding torque standard in record (playback) mode>
(If there is torque ripple, read the center value.)
0.70 +0.4/-0.3mN·m, ripple 0.5mN·m or less
7-2. Checking the rewinding playback (VS-REW) winding torque
AC adapter used, without cassette controller assembly (Independent Mechanism)
(1)Remove the cassette controller assembly, press the DOWN switch, using the
adhesive tape and referring to 9-3, operate in the TEST mode (T01) to rewind,
and set the rewinding playback (VS-REW) mode.
(2)Set the torque gauge on the S reel base, press the front end of tension post with
your finger in the arrow A direction so as to ascertain that the winding torque is
as specified. (Check without rotating the torque gauge.)
<Rewinding playback (VS-REW) winding torque standard>
(If torque ripple exists, read its center value.)
1.6 ± 0.6mN·m, ripple 0.6mN·m or less
(3)After checking the winding torque remove the torque gauge, and remove the
adhesive tape used in item (1) above (refer to 9-3). The STANDBY mode is set
automatically.
Fig. 1. Removal of tension band when
measuring the rewinding playback (VS-REW) winding torque
7-3. Checking of reel base height DC3V, without cassette controller assembly (Independent Mechanism)
(1)Remove the cassette controller assembly (refer to 9-2).
(2)Referring to 9-1, apply DC3V to the loading motor and put the system into playback mode.
(3)Taking adequate care so that the master plane does not contact drum, running parts (guide roller, etc.), or the MIC contacts. Fit
the master plane holes to the 2 guides (A and B) in Fig. 2.
(4)Confirm that the heights of the S reel base reel receiving surface and the Tu reel base reel receiving surface below the master plane
top surface are within the set values, using, for example, a slide calliper (Fig. 3).
When checking the S reel base height, press the front end of tension post in the arrow A direction with your finger to release the
tension band, and then check the height in this state (Fig. 1).
(5)If the height is not within set values, replace the washer under the reel base, and adjust as specified.
Note: After the adjustment, make sure that the reel bases rotate smoothly.
Reel receiving
surfaces
2.4 ± 0.1
2.4 ± 0.1
Reel base height
setting values
Reel base height
Fig. 3
11
A
setting values
MIC contacts
Fig. 2
B
VL-WD650U
7-4. Back tension torque check and adjustment in record (playback) mode
AC adapter used, with cassette controller assembly
(1)Checking
Set the torque cassette (SD-1015), and make sure in the SP record mode that
the supply side torque is within the standard shown below (or in the playback
mode for the tape on which the signal has been SP-recorded).
<Standard>
(If torque ripple exists, read its center value.)
0.7 ± 0.1mN·m
(2)Adjustment (Fig. 4)
If the value is out of standard range, adjust, using the screw 1 shown in Fig. 4.
1. Loosen the screw 2 slightly.
2. Adjust to turning the screw 1. When back tension is too high, turn the screw
1 counterclockwise (CCW).
When back tension is too low, turn the screw 1 clockwise (CW).
3. After adjustment fix the angle with the screw 2. (At this time take care so as
to prevent excessive tightening.) Apply Screw Lock to the screw 1.
<Caution>
Screw tightening torque: 0.04N·m
7-5. Checking and adjustment of tension roller position in
record (playback) mode
DC3V, without cassette controller assembly (Independent Mechanism)
(1)Checking
Before winding the 60-min tape make sure that the tension roller is in the same
position as S guide as shown in Fig. 4.
If not, take out the tape and adjust in the following procedure.
(2)Adjustment (Fig. 5)
1. Set the playback mode without loading the tape.
2. Loosen the screw 3 slightly (to such an extent that the tension band holder
4 can be moved).
3. If the tension roller is inside from the specified position, shift the tension
band holder 4 in the arrow
the tension band holder in the arrow
(Proper shift must be 0.2 to 0.6mm outside from the specified position.)
4. Check the position by the procedure described in item (1) Checking above.
5. If the position is not specified position, adjust again.
direction. If the tension roller is outside, shift
A
direction, and fix with the screw 3.
B
Screw1
Apply screwlock
Tension roller position (S guide standard)
0.2~0.6mm (Standard)
Tension roller
Tension roller position (S guide standard)
Screw2
CCW
CW
Fig. 4. Check (tape exists)
0 ± 0.3
S guide
Tension band holder 4
Screw 3
7-6. Checking of supply S reel base no-load torque
DC3V, without cassette controller assembly (Independent Mechanism)
(1)Remove the cassette controller assembly, then apply DC3V to the loading
motor and put the system into L. start mode (refer to 9-1).
(2)Move the swing arm toward the Tu reel base side.
Be careful not to cause damage to the gears and other parts in the process. (Fig.
6)
(3)Set a back tension measurement reel hub on the S reel base.
(4)Using a dial tension gauge, pull the string in the A direction, then confirm that the
tension is within the standard.
<FF back tension standard>
(If the tension fluctuates, read its center value.)
30mN or less
7-7. Checking of loading back tension
DC3V, without cassette controller assembly (Independent Mechanism)
(1)Remove the cassette controller assembly, then apply DC3V to the loading
motor and put the system into L. start mode.
(refer to 9-1)
(2)Move the swing arm toward the S reel base side. Be careful not to cause
damage to the gears and other parts in the process. (Fig. 7)
(3)Set a back tension measurement reel hub on the Tu reel base.
(4)Using a dial tension gauge, pull the string in the A direction, then confirm that
the tension is within the standard.
Fig. 5. Position adjustment
(tape does not exist)
Move the swing arm
A
toward the Tu reel
base side.
Fig. 6. S reel base no-load torque
measurement method
12
<REW back tension standard>
(If the tension fluctuates, read its center value.)
15 ± 12mN
7-8. Checking of winding Tu reel base ratchet torque
DC3V, without cassette controller assembly (Independent Mechanism)
(1)Remove the cassette controller assembly, then apply DC3V to the loading
motor and put the system into standby mode. (refer to 9-1)
(2)Move the swing arm toward the S reel base side.
Be careful not to cause damage to the gears and other parts in the process.
(Fig. 8)
(3)Set a back tension measurement reel hub on the Tu reel base.
(4)Using a dial tension gauge, pull the string in the A direction, then confirm that
the tension is within the standard.
<Winding Tu reel base ratchet torque standard >
(If the tension fluctuates, read its center value.)
100mN or less
7-9. Checking of rewinding playback (VS-REW) back
tension
DC3V, without cassette controller assembly (Independent Mechanism)
(1)Remove the cassette controller assembly, then apply DC3V to the loading
motor and put the system into rewinding playback (VS-REW) mode. (refer to
9-1)
(2)Move the swing arm toward the S reel base side.
Be careful not to cause damage to the gears and other parts in the process.
(3)Set a torque gauge on the Tu reel base.
(4)Turning the torque gauge to counterclockwise (1 turn for 3 seconds), then
confirm that the torque is within the standard.
<Rewinding playback (VS-REW) back tension standard value>
(If the tension fluctuates, read its center value.)
0.70 +0.7/-0.3mN·m
VL-WD650U
Move the swing arm
toward the S reel
base side.
Fig. 7. Loading back tension measurement
method
A
7-10.Checking of pinch pressing force
DC3V, without cassette controller assembly (Independent Mechanism)
(1) Set the pinch roller pressing force measuring thread on the pinch lever
(position A , Fig. 9).
(2)Set the mechanism to the playback mode, press the pinch roller against the
capstan axis.
(3)Fit the tension gauge to the pinch roller pressing force measuring thread, pull
in the arrow B direction shown in Fig. 11 to separate a little the pinch roller from
the capstan axis.
(4)Gradually return the pinch roller, and when the pinch roller contacts parallel
the capstan axis, read the value (see Fig. 10) to make sure that the value
conforms to the standard shown below.
<Standard>
1.8 +0.3/-0.5N
<Caution>
After making this measurement, quickly release the system from playback
mode and remove the pinch roller from the capstan shaft. (If the pinch roller
is left fitted onto the capstan shaft for a long time, the pinch roller will be
deformed.)
A
OK
NG
Move the swing arm
toward the S reel
base side.
A
Fig. 8. Winding Tu reel base ratchet torque
measurement method
Pinch roller
Right guide
Capstan shaft
B
Fig. 9
Fig. 10
Fig. 11
13
VL-WD650U
8. TAPE RUNNING ADJUSTMENT
8-1. Adjustment locations
<Replacement parts>
· T roller, arm
· Tu guide, arm
· Slide chassis
<Replacement parts other
than those shown above>
· S guide
· Pole base
· Guide roller
· Drum assembly
· Capstan motor, etc.
Adjust the height of only
replaced parts with the
adjusting jig.
Adjustment procedure 8-2
Height presetting is not
necessary.
Cassette controller
installation
Running adjustment preparation
Adjustment
procedure 8-3
Running rough
adjustment
Adjustment
procedure 8-4
Running final
adjustment
Adjustment
procedure 8-5
8-2. Running height adjustment
· After replacement of T roller or Tu guide adjust the height . (Adjust only the replaced parts.)
· After height adjustment do not turn the T roller. If crease is found on the tape of Tu guide, remove the crease by rotating.
(As for details refer to the “Running rough adjustment”.)
· After height adjustment of T roller or Tu guide, apply Screw lock to an end of shaft.
(After replacement of S guide apply Screw lock to same point, too.)
Tu guide
T roller
Height setting
jig
Lower edge
fitting
Master plane
Fit height the par on low edge fitting.
After setting adjustment jigs, turn T roller
and S guide counterclockwise to 225°.
Master plane
Height setting
jig
Height setting
jig
Master plane
8-3. Preparation for tape running adjustment
Meters, jig… Oscilloscope, Adjustment remote control, Height adjustment screw driver, Alignment tape (for tape running
adjustment, for switch point adjustment), Master plane, Height adjustment jig.
<Method and description>
(1)Clean the tape running surface (especially, adequately clean
the drum surface and the lower drum helicam surface).
(2)Attach the cassette controller.
(3)Connect an oscilloscope to each TP on the relay circuit board.
(4)Turn the AC adapter power ON.
(5)Using the adjustment remote control unit, put the system TEST
mode T-05.
(6)Replay the alignment tape for running adjustment, and make
sure that the tape is running in the SP mode.
(7)Check the oscilloscope playback envelope, then, at +1/4 shift
and -1/4 shift, check whether all of it is flat. If it is not, perform
the following adjustment so that it becomes flat.
(Each time you push the PLAY key, the shift will change;
+1/4 shift → Normal → -1/4 shift → Normal , in order.)
Sup guide roller
Tension roller
Drum
S guide
Tu guide roller
Tu guide
Pinch roller
Reels
14
8-4. Running rough adjustment
(With cassette controller)
VL-WD650U
1) Su, Tu guide roller height adjustment
<Method and description>
(1)Loosen the guide roller lock screw, then tighten loosely so that
the roller turns easily.
(2)Replay an alignment tape, and adjust the Sup, Tu guide roller
so that the envelope sides of entrance and exit are flat.
(3)Perform ± 1/4 shift, then, as in the above case, adjust until the
envelope becomes flat.
* If running is difficult for the entrance changed, turn the T roller
to counter clockwise 180°. (refer to Fig. 1)
2) Check of V/SR envelope wave form
<Method and description>
(1)Confirm that the envelope waveform peaks in V/SR mode are
uniform.
(2) If they are not uniform, fine-adjust the guide roller and the Tu
guide.
3) Check of tape wrinkles
<Method and description>
(1)Check that the tape is not distorted between the Tu guide and
pinch in the PB mode and the V/SR mode.
-If crease is found, make an adjustment in the range of ±180°.
-After adjustment apply Screw Lock.
NG
±1/4 shift ±1/4 shift
Entrance side
Turn to 180°
Exit side
Normal
T roller
Fig. 1
Adjust so that A B.
A
Pinch roller
B
Wrinkles
Tu guide
Deformation
Deformation
NG
•
•
4) Check the rising time of the envelope wave form
<Method and description>
(1)Check the rising time of the envelope when switching from V/SR mode to PB mode. (Within 5 sec)
(2)Check the rising time of the envelope when switching from STOP mode to PB mode. (Within 5 sec)
8-5. Final running adjustment
(With cassette controller)
1) Adjustment of Sup and Tu guide roller height
<Method and description>
(1)Perform ± 1/4 shift, then if the envelope wave's ratio of MAX.
to MIN. are 60% or less, adjust again the height of guide roller.
(Refer to Fig. 2)
(2)Finally adjust the lock screw of Sup and Tu guide roller.
(3)Once perform unloading and then loading to set the PB mode,
and make sure that the envelope waveform does not change.
2) Adjustment of playback SWP
<Method and description>
(1)Playback the alignment tape for switch point adjustment.
(2)Perform SWP automatic adjustment with adjustment remote control.
Fig. 2
* When replacing the mechanism and drum, adjust the phase and equalizer using the adjustment remote control.
(Refer to "10. ADJUSTMENT THE ELECTRICAL CIRCUIT".)
15
VL-WD650U
9. MECHANICAL SECTION ASSEMBLY AND PARTS REPLACEMENT
(DISASSEMBLY AND REASSEMBLY)
Mechanical section disassembly and reassembly are explained in this section.
For removal of the cabinet, etc., refer to 4. DISASSEMBLY OF THE SET.
<Precautions>
1. Always replace cut washers that have been removed, for example in parts replacement, with new ones.
When reassembling, be careful not to allow screws, washers or foreign matter to enter. They can cause mechanical misoperation.
2.
3. Use the cleaning liquid, oil, grease and screw lock that are specified below. Use of any other kind can cause mechanical
misoperation.
Oil: Cosmo Petroleum : Cosmo Hydro HV22 Screw lock: Three Bond :1401B
Grease: Dow Corning : Moly Coat YM-103 Cleaning liquid: Industrial-use ethyl alcohol
9-1. On the mechanical modes
When operating the mechanism separately, apply DC3~4V to the loading motor.
(When the mechanism is connected to the main PWB, do not apply external voltage to the loading motor. It may cause operational problems.)
(1) EJECT mode
The mechanism position to take out the cassette where the
EJECT lever is extremely shifted in the A direction. (It is impossible to lock the cassette controller assembly in this mode.)
EJECT lever
A
EJECT mode diagram
(3)LOADING START mode
This is the mode where the tape is wound around the winding
reel when a cassette with visible wind start leader tape is
loaded. (The brake shifter moves to the left, the S main brake
is separated from the S reel base and the Tu main brake is
separated from the Tu reel base.)
(2)STANDBY mode
The mechanism position to set the cassette where the slide
chassis is at the farthest position from the drum and the
EJECT lever is in clockwise rotated position (position where
the cassette controller assembly can be locked).
EJECT lever
Rotation
It is hardly seen since
it is concealed with
slide chassis.
Slide chassis
STANDBY mode diagram
(4)REWINDING (VSR) mode
The mechanism position to rewind the tape (fast rewinding
playback). The S and T pole base is pressed, the pinch roller
is pressed to the capstan axis, the brake shifter VSR brake
section engages with the Tu reel base gear.
T pole base
S pole base
Capstan shaft
Pinch roller
S reel base
S main brake
Brake shifter
LOADING START mode diagram
VSR brake section
Tu reel base
Tu reel base
Tu main brake
REWINDING (VSR) mode diagram
16
VL-WD650U
(5)PLAYBACK (RECORD, FF, VSF) mode
The mechanism position for playback, record, FF and fast
feed playback.
The pinch roller is pressed to the capstan axis, and the S/Tu
main brake is separated from the S/Tu reel base.
Pinch roller
S reel base
S main brake
Capstan shaft
Tu reel base
Tu main brake
(Not visible)
(6)STOP mode
The system is in the STOP (Rec Lock in CAMERA mode)
position; the S and the T pole bases are snap-fitted to the drum
base, the S brake is in contact with the S reel base, and the Tu
brake is in contact with the Tu reel base.
S pole base
S reel base
S main brake
T pole base
PLAYBACK mode diagram
(RECORD, FF, VSF)
STOP mode diagram
9-2. Cassette controller assembly
<Removing>
(1) Apply DC3V to the loading motor to enter the standby mode.
Press the lock lever in the arrow direction to raise the cassette controller. (See Fig. 1; A or B direction.)
(2) Turn the damper lever in the arrow
(3) Remove two screws
, and remove the down guide D in the arrow
E
Take care that the slide chassis is provided with the down guide positioning G or H.
(4) Slide the cassette controller in the arrow
and turn the cassette controller in the arrow
(5) Slide the cassette controller in the arrow
direction to release the engagement of the damper bar. (See Fig. 2.)
C
direction, remove the outer link shaft (both sides) toward the inside of the mechanism,
I
direction. (See Fig. 5.)
J
direction. (See Fig. 6.)
K
direction. (See Figs. 3 and 4.)
F
Tu reel base
Tu main brake
<Installing>
(1) Apply DC3V to the loading motor to enter the standby mode.
(2) For assembly, reverse the removing procedure (5) thru (2).
Tightening torque of two screws
Fig. 1.
: 40±4mN.m
E
Fig. 3.
Fig. 2.
Fig. 4.
Fig. 5.
Fig. 6.
17
VL-WD650U
9-3. How to operate with the circuit board without the cassette controller assembly.
In this method, if the procedure is followed incorrectly there is danger of damaging the mechanism and the tape, so except in special
cases, such as when measuring the VSR torque, do not perform this procedure. Normally operate this unit with the cassette controller
assembly attached.
Be sure to follow each caution mentioned.
(1) Apply DC3 ~ 4V to the loading motor to enter the standby mode.
(2) Securely press the movable piece L of the down SW with
cellophane tape or similar to turn on SW. (Take care that the
movable piece turns only in the shown arrow direction.)
Movable piece
of down SW.
Note: To enter REC mode, press the pin of the recognition switch
.
M
(Unnecessary in other modes.)
(3) Set the test mode (T-01) with the adjustment remote controller
without putting the tape, and the mechanical operation will
become possible with the mode key.
(4) For ejection, remove the tape of (2).
Side view
Rotary direction of
movable
piece
Fig. 7. LOADING START mode
9-4. Phase matching
Referring to Figs. 8 and 9, align the phase for the following parts.
(1) Ejection lever (2) Election operation lever (3) Mode SW (4) Main cam (5) Subcam
Note: Before disassembly, sufficiently check the marker position.
Note: When installing the joining gears, verify that the phase aligning holes of the main cam and subcam are aligned to the hole of
the chassis.
Note: After the phase is aligned, turn the mode SW with hand, and verify that it turns nearly one turn.
(After verification, return it to the original position.)
Eject lever
control lever
Eject lever
Phase matching hole
(for chassis)
Phase matching hole
(for gear)
Fig. 8
MODE switch
Phase matching
mark
Phase matching hole
(for chassis)
Main cam
18
Coupling
gear
Fig. 9
Sub cam
Phase matching hole
(for chassis)
9-5. Reassembly
367
315
363
366
311
312
364
365
421
459
C
Capstan FPC cover
H/A PWB angle
F
E
E
T arm control
lever cover
Intermediate gear angle
sub Ass'y
Center pulley
Ass'y
Intermediate pulley
Ass'y
Driving belt
396
308
362
373
454
451
307
395
372
452
I
I
H
H
Guide roller Ass'y
Sup pole base Ass'y
Tu pole base
Ass'y
S loading arm
Ass'y
S pressure spring
S loading gear
Tu loading gear
Tu pressure spring
Tu loading arm Ass'y
Guide rail
G
G
Phase match check
Phase match check
Guide rail sub Ass'y
(Rear surface)
Enter part of
convexity rear
surfacer
Guide rail sub Ass'y
9-5-1. Reassembly in side of the main chassis.
Note) Numbers before part names are given as a guide to the order of assembly.
As for greasing/oiling/cleaning places refer to the attached drawings (Grease/Oil application side of the main chassis).
1.
Pinch control lever
Groove grease
303
Pinch drive lever
361
Main chassis Ass'y(Front surface)
301
4.
VL-WD650U
2.
3.
Groove grease
Mode SW
463
EJECT control lever
EJECT lever
T arm control lever
Loading lever
A-3
360
309
A-2
A-1
Main cam
302
306
LM/Mode FPC
465
Item
Tightening torque
A S Tight · M1.4 x L3 70mN·m 3
Cam groove grease
304
Coupling
gear
370
AHC cam
369
Item
Shifter drive lever
B
305
Tightening torque
B CWø1.2-ø3.0-t0.25 1
Loading motor Ass'y
461
D
Loading motor
fitting Ass'y
Slide chassis
C
guide
386
Capstan motor
462
C
371
Sub cam
Quantity
Ass'y
Quantity
Item
Tightening torque
Quantity
C Special screw · 40mN·m 1
M1.4 x L1.6
E S Tight · M1.4 x L4 70mN·m 2
F S Tight · M1.4 x L2 70mN·m 1
5.
G
Special head screw ·
M1.4 x L1.5
Item
Tightening torque
40mN·m 2
Quantity
6.
Groove grease
C Special screw · 40mN·m 2
Item
M1.4 x L1.6
Special screw with step
D
M1.4 x L6.25
Tightening torque
Quantity
· 70mN·m 1
19
Item
Tightening torque
Quantity
H CWø0.7-ø2.2-t0.25 2
I Special screw · 5mN·m 2
M1.2 x L1.8
(Tentative tightening)
VL-WD650U
9-5-2. Reassembly in side of the Slide chassis.
Note) Numbers before part names are given as a guide to the order of assembly.
As for greasing/oiling/cleaning places refer to the attached drawings (Grease/Oil application side of the slide chassis)
1.
Slide adjustment
angle
S cassette stay
K
382
Tu pole
381
383
352
Tu guide
Ass'y
arm
393
Tu guide
arm SPR.
Tightening torque
Grease
376
344
Note1)
F
J
Brake shifter
Ass'y
Slide chassis Ass'y
Grease
353
331
Item
T roller upper
flange
T roller bottom
flange
F S Tight · M1.4 x L2 40mN·m 1
H CWø0.7-ø2.2-t0.25 1
J Special screw · 40mN·m 1
M1.2 x L1
Note 1: Use the No. 00 bit.
K
Special head screw ·
40mN·m 1
M1.4 x L2
Sensor FPC cover
502
Damper
466
397
Guide adjustment SPR.
H
Quantity
Spring
2.
T roller upper
382
flange
455
Tension arm Ass'y
354
456
N
T spring
hanging
ANG
356
K
B
Tu main
brake
375
O
411
415
M
T arm SPR.
392
H
N
391
Main brake
SPR.
351
Tu reel base
Ass'y
457
411
O
Main brake SPR.
Fit the main brake SPR from
above, and close with the hook.
Swing arm release
lever fixing screw
Swing arm
release lever
Swing arm
release SPR.
420
357
390
Tension band
Ass'y
S reel base Ass'y
S main brake
374
391
F
L
Note 1: Take care for scratch and hit mark on 381, 382 , 383 , 384 and
455 . Handle the tension band with care against deformation.
Note 2: After lightly tightening 428 arm area against deformation,
apply screw-lock on the tip of the shaft.
384
383
397
Guide adjustment
SPR.
S guide hexagon nut
428
385
S guide sleeve
415
Pinch lever Ass'y
458
Pinch lever
394
return SPR.
H
T roller Ass'y
T roller inner
T roller bottom
flange
Grease
Item
Tightening torque
Quantity
B CWø1.2-ø3.0-t0.25 1
F S Tight · M1.4 x L2 40mN·m 1
H CWø0.7-ø2.2-t0.25 2
Special head screw ·
K
40mN·m 1
M1.4 x L2
Special screw with step
L
· 40mN·m 1
M1.4 x L1
Type 2 minuteness
M
40mN·m 1
M1.4 x L1
N CWø0.7-ø1.8-t0.1 2
O Wø1.2-ø2.5-t0.3 2
20
VL-WD650U
A
Tightening torque
50mN·m
470
453
399
389
398
438
314
A
A
F-3
F-4
F-5
F-2
F-1
Drum Ass'y
Mechanism fixing angle
PB guide SPR.
Tape guide SPR.
Grease
(Rear surface,
groove side surface)
Grease
(Front surface, rear surface,
groove side surface)
Drum base Ass'y
Drum mounting screw
Drum fixing SPR
A
Q
501
500
Q
Q
H/A FPC shield plate
Head amplifier PWB unit
9-5-3. Main chassis assembly and slide chassis assembly assembling method
(1)Enter the coupling mode. (In this position, the cam groove of the T arm operation lever in the figure is parallel to the side of the main
chassis, and the ball base is slightly moved.)
(2)Insert the slide chassis side operation pins (1 tension arm, 2 Tu guide arm, 3 pinch lever) in the position shown below at the
main chassis side, move the slide chassis in the arrow direction, using
into the groove of slide chassis, and install with the 4 screws.
to D as guides, insert the loading lever operation pin
1.
C
C
C
B
A
1
D
Item
C
Special screw ·
C
C
2
3
Tightening torque
40mN·m 4
Quantity
3.
M1.4 x L1.6
2.
FPC cover
377
P
355
Reel cover Ass'y
Oil
A S Tight · M1.4 x L3 40mN·m 1
N CWø0.7-ø1.8-t0.1 1
P
Swing arm Ass'y
N
313
Item
Type 1 minuteness
M1.4 x L1
A
Tightening torque
40mN·m 1
Quantity
21
Item
Tightening torque
Quantity
A S Tight · M1.4 x L3 70mN·m 3
F S Tight · M1.4 x L2 70mN·m 5
4.
Q
Type 2 minuteness
M1.4 x L2
Item
Tightening torque
40mN·m 3
Quantity
VL-WD650U
GREASE/OIL APPLICATION
Including groove
side surface
(Applied)
Rear surface · groove
side surface
Drum base assembly
Intermediate gear angle
Pinch control lever
Front surface · rear
surface · groove
side surface
Side of the main chassis
(Applied)
Main cam
S loading arm
Enabled after
assembling
Captan FPC cover
From rear
surface side
From rear
surface side
Enabled after
assembling
T arm control lever
Loading lever
Tu loading arm
: Oiling(Cosmo Hydro HV22)
O
: Greasing(Moly Coat YM-103)
G
: Greasing(Moly Coat YM-103)
Swing arm
After joining the main chassis
and alide chassis
9-6. Removing the cassette
(1)Apply DC3V to the loading motor unload slightly.
(2)After the tape is slackened, turn the rotor (lower side of mechanism)
of capstan motor to tighten the tape. (Arrow direction, Fig. 1)
(3) Repeat the operations (1) and (2). After the pole base has been
completely unloaded, ascertain that the tape is not loose.
(4)Finally apply again DC3V to the loading motor, so that the cassette
controller ejects.
(5)Take out the cassette.
Note) DC3V is applied to the loading motor as shown Fig 1. Then, the
mechanism moves in the unloading direction.
Enabled after
Brake shifter
assembling
Slide adjustment angle
Side of the slide chassis
Sensor FPC wiring
Loading motor
Minus pole
Plus pole
Pinch lever
: Oiling
O
: Greasing
G
: Greasing
Part A
Capstan motor rotor rotation direction
(from rear side of mechanism)
Sensor FPC
22
Fig. 1
VL-WD650U
10. ADJUSTING THE ELECTRICAL CIRCUITS
Before starting the electric circuit adjustment
• The adjustment methods described herein are used, in most cases, when the expendable mechanical parts, including
the video head, have been replaced, at which time the electrical circuits need to be readjusted. Before adjusting the
electrical circuits, make sure that the mechanism works properly (i.e., the mechanism is properly adjusted). Incase of
the occurrence of any problem to the electrical circuits, be sure to use the specified measuring instruments to locate
the area to which the problem is occurring, and then take the necessary action, including repair, replacement or
adjustment, exactly as instructed in the electrical adjustment methods that will follow.
Do not attempt to make adjustments without using the proper measuring instruments.
• This machine is configured so that the electrical circuits inside its PWB unit are composed, for the most part, of highdensity, small surface-mounted component parts for downsized machine body.
To perform repair service or parts replacement, do so using a soldering iron, but in as short a time as possible; this is
because surface-mounted component parts are generally so small in size and susceptible to heat, as compared with
the large discrete parts used in TV sets, desk-top video decks, etc., that attempting to heat their electrodes for a longer
time than is necessary with a soldering iron may result in their becoming defective.
This applies particularly when replacing the laminated chip capacitors.
For this purpose, ceramic soldering irons with a temperature regulator are recommended (iron tip temperature 250°C
and soldering time 5 seconds or shorter).
23
VL-WD650U
MAIN PWB
QCNW-
@
1709TAZZ
QCNW-
@
2028TAZZ
POWER PWB
JOINT PWB
OPERATION
PWB
AV/S JACK PWB
S
TERMINAL
VIDEO
AUDIOLAUDIO
R
ZOOM SW
UNIT
QSW-Z0362
TAZZ
QCNW-2029TAZZ
@@@
or QPWBH3062TAZZ
IR
REMOCON
PWB
QCNW-2027TAZZ
SC3301
SC551
SC900
10
16
DV/PC JACK PWB
LENS UNIT
CCD
PWB
QCNW-1711TAZZ
Direct
connection
QPWBH3059TAZZ
QCNW-2002TAZZ
V/F UNIT
11
QCNW-2041TAZZ
12
13
14
18
17
15
Microphone
RMiCC0099TAZZ
Speaker
SUB PWB
SC3801
SC3803
SC9800
SC3800
LCD PWB
Direct
connection
LAMP UNIT
MECHANISM
HEAD AMP PWB
QCNW-1832TAZZ
BATTERY
TERMINAL
UNIT
DUNTK3063PM00
HEAD AMP FPC
CPWBH2876TA01
P306
LCD PANEL
Direct connection
QPWBH3060TAZZ
ZOOM MIC UNIT
DUNTK3054PM00
TURN SW UNIT
QSW-Z0364TAZZ
VSP0020P-968N
HEADPHONE JACK
@@@
J2003
@
DV JACK
@@@
J2001
PC connection
JACK
@@@
J2002
P2001
SC5201
SC2001
1 2 17 1
1
120
115115
124
41
1
2
5
4
6
9
8
7
3
12
80
1
SC2024
SC2051
121
121
15 1
22 1
21 1 414
120
117
117
SC801
SC802
P801 P6602 P6601
P5501
SC5002
120
SC1
12220 1
22
1
SC8801
170 40
SC5003
140
SC2021
P1900
SC21
SC5001
1
70
SC901
19
20
122
SC2011
51
SC
2012
1
VL-WD650U Service jig configuration
24
VL-WD650U
VL-WD650U
No. Connection section Connector REF. No.
1 H/A_PWB–H/A_FPC P306– 80B-B C QCNW-1832TAZZ BV
2 H/A_FPC–MAIN –SC3301 80B-B CPWBH2876TA01 Product unit use AS
3 MAIN–Battery Terminal SC900← 12 DUNTK3063PM00 Product unit use —
4 MAIN–POWER P1900–SC901 70B-B C QCNW-1709TAZZ BU
5 MAIN–AV/S Jack PWB SC5001–SC2011 22 N QCNW-2028TAZZ AN
6 MAIN–JOINT PWB SC5003–SC2021 40 N QCNW-2027TAZZ AM
7 MAIN–V/F Unit SC8801– 22 C QCNW-2002TAZZ BL
8 MAIN–CCD PWB SC21–SC1 20 QPWBH3059TAZZ Product unit use AF
9 MAIN–Lens Unit SC551– 22 Direct connection —
10 MAIN–DV/PC Jack PWB SC5002–SC2001 17 C QCNW-1711TAZZ AL
11 MAIN–SUB PWB P5501–SC5201 120B-B N QCNW-2041TAZZ BT
12 MAIN–Zoom Mic Unit P6601– 4 DUNTK3054PM00 Product unit use —
13 MAIN–Microphone P6602– 4 RMiCC0099TAZZ Product unit use AT
14 MAIN–TURN SW Unit P801 2 QSW-Z0364TAZZ Product unit use AA
15 MAIN–LCD PWB SC801–SC3801 15-15 QPWBH3060TAZZ Product unit use AR
16 DV/PC Jack PWB–Speaker P2001– 2 VSP0020P-968N Product unit use AL
17 LCD PWB–LCD Panel SC3803– 24 Direct connection —
18 LCD PWB–LAMP Unit SC9800– 4 Direct connection —
19
J
OINT PWB– SC2024–SC2051 12 N QCNW-2029TAZZ or AN
Operation PWB QPWBH3062TAZZ Product unit use AD
20
AV/S Jack PWB–Zoom SW
Specifications of service jigs
SC802–SC3800 17-15
SC2012– 5 QSW-Z0362TAZZ Product unit use AR
No. of pins
New or
Continuation
Part cord
Price
code
25
VL-WD650U
[TEST POINT]
(Wiring board diagram: Main Side B)
TL604
EE level check
Frequency character check
Super-directional microphone check
TL605
EE level check
Frequency character check
Super-directional microphone check
TL8845(VR)
VF sub-contrast R/B
VF sub-brightness R/B
TL8846(VG)
VF COM-DC
VF brightness
VF contrast
VFγ1
VF sub-contrast R/B
VF sub-brightness R/B
Z2
TL8844(VB)
VF sub-contrast R/B
VF sub-brightness R/B
TL8839
TL8848TL8841
R220
R221
TL8835
TL8837
C204
TL8844
TL8846
Q201
C219
R222
TL1927
C201
FB201
TL8821
TL8847(COM)
VF COM-DC
TL8840(HST)
VF VCO
TL8833
TL8849
TL8847
TL8845
TL8843
TL8831
TL8838
TL8836
TL8834
TL8832
IC201
C203
FB204
C206
C205
FB203
FB202
TL1928
C24
TL7800(AFC)
VCO free-run
TL8800(VF-Y)
VF VCO
TL24
TL21
TL8860
TL8842
TL8840
L101
TL25
TL22
C220
C202
C217
TL209
TL208
R203
R204
R218
C214 R219
R207
R205R209R208R206R210
R215
R217
R213
R214
R216
R212
R202
R211
C213
FB35
TL5132
TL5139
TL5137
TL5130
TL5119
TL5128
TL5129
TL5138
TL5120
TL5121
TL5123
TL5125
TL5127
TL6602(TELE MIC)
TL6604(GND)
EE level check
Frequency character check
Super-directional microphone check
TL6607(INT MIC R)
EE level check
Frequency character check
TL6605(INT MIC L)
TL828
TL830
TL825
TL822
TL833TL829
TL824
TL832
TL820
TL818
TL819
TL816
TL6606
TL815
TL817
R5801
TL823
R5800
TL812
TL811
TL810 TL813TL814
TL809
TL808
SC801
TL807
TL804TL806
TL805
R5804
R5803
TL803
R5802
R5805
TL802
TL801
TL703
R1804
TL702
C1801
TL821
TL831
TL1801
TL834
C2804
R1802
Q1800
R1803C1810C2803
D1800
C1800
TL1800
C2802
R2800
R2801
R1800
R1801
R3457
TL1936
C3459
R3469
R3471
R3444
R3468
R3451
IC3403
C3452
R3448
R3436
R3463C3430R3490R3481C3444
C3456
C3457
C3475
R3437R3462C3429C3471C3434C3431
TL3406
C3411
R3434
C3410
R3406
C3465
R3496
R3489Q3406
IC7801
C7808
TL4437
R7803
R7813
C7806
R7814
R7812
L7800
L4401
R1725
R1726
R1723
R1724
R1720
TL1701
TL1917
C1712
C1710
C1715
C1713
C1716
L1701
TL3343
R1710
C1714
C3423
C3419
C3417
TL3365
R4414
Q1701
C3409
TL3338
TL4438
TL4439
TL3364
TL1925
TL3371
R1728
C3455
C3460
R3452
C3453
R3450
R3423
C3454
C3481
TL3401TL3403
FL3402
C3421
R3412C3466C3420
R3411R3410C3414
TL3307
TL3379
TL3306
FL3401
TL3380
TL3378
TL3375
TL3374
TL3377
TL3373
Q3405
TL3372
TL3348
R3499
TL3346
TL3368
TL3316
TL3317
TL3362
TL3366
TL3363
TL3318
TL3360
TL4436
TL3322
TL3358
TL3324
TL3356
TL3326
TL3353
TL4440
TL3328
TL3354
TL3351
TL3350TL3345
TL3330
TL3319
TL3355
TL3341
TL3329TL3315TL3370
C1728
R1727
R1714
R1713
R1711
TL1903
TL1901
TL1702
C1720
C1718
C1717
TL1916
C1724
C1725 C1902
TL1704
R1715
C1726
C1727
C1723
C1722
R1722
TL1703
R1712
TL1913
TL1705
C1721
R1716
C1719
C634
IC4461
C4481
C1431
TL5041
R687
C4483
Q1432
C1433R1433
R1435R1434
R1437
C1435
R1436
TL5035
TL5036
C6646
C6643
C603
C685
C633
TL4451
R4466
R4453
C4466
D4451
L4461
R4473
Q4471
R4474
R4477
Q4472
R4424
R4428
R4486
Q4481
R4485
C4485
C1432
R1432R1431
R1403
R1404
R1453
TL5002
TL5004
TL5001
TL5013
TL5032TL5034
TL5031
TL5033
C6621
C6622
R6628
R6629
C6630
IC6601
R6651
R6654
R6652
R6653
R6650
C6645
C6644
C6642
R603C616
R660
R617
Q605
R661
R618
Q604
R616
R662
C606
R613
R672
R671
C617
IC601
R654
R636
C631
C632
R638
R631
C625
D4452
R4454
L4451
C7843
C4454
R4456
X4451
TL4433TL4435
R4452
R4451
TL4434
C4451
C4427
C4426
R4478
C4423
TL4417
C4424
C4422
R4475
TL4416
C4420
C4472
C4482
C4412
C4435
C4411
R4435
C4436
R4425
C4405
R4488
Q4482
C1405
R4487
C1408
Q1434
R1438
R1439
C1436
R1454
R1440
C1404
C1437
R1442
C1409
TL1431
R1441
R1415
C1440
C1438
R1408
Q1405
IC1431
C1407
R1402
R1413
C1439
C1441
R5007
R1414
R1419
SC5001
TL5004
PCO D/A-Y
P6601
TL6603
TL6604
R6605
R6606
R6610
R6608
C6606
R6607
C6601
R6609
R6602
C6603
C6602
C6608
C6609
R6613
C6610
R6615
R6617
R6618
C6613
R6621
C6618
C6617
C6619
R6658
R6657
Q6602
R6627
R6626
C6620
C6648
R6646
R6648
R6649
C6647
R6647
TL602
C623
C624
TL601
C628
C629
R635
C645
FB4494
TL4429
L6601Q6604
TH3401
TL3352
Q3404
C7837
C4431
TL4428
C3473
R3446
C3432
IC3402
R3488
R3445
R3427R3426
R3486R3432
R3487
C3433
R3428
C3426
R3421
L3404
C3424
C3436
TL3333
C3477
R3473
R3419
R3454
C3476
R3472
R3479
R3478
R3420
R3470
C3470
C3467
C3418
R3416
FL3403
C3416
R3417
C3415
R3418
C3478
R3415
L3402
C3425
R3402
C7844
TL7800
R7841
R7852
R7843
R7855
R7854
L7801
C7841
R7851
D7800
C7842C4432
C7815
IC4401
R4415
R4436
Q4441
Q4433
Q4434
Q4442
R4442R4437
R4443
TL4403
TL8800
R4422
R4421C4407
R4426
R4423
C4406
R4420
R4429R4499
C1413
D1402
R4411
R4409
R4410
R4408
R4406
R4407
R4405
R4404
IC1401
D1403
C1411
C1406
C1412
TL5021
TL5019
TL5017
TL5016
TL5011
P6602
TL6602
TL6605
TL6607
TL6601
C6604
C6607
R6612
R6614
C6605
C6611
R6619R6616
C6614
R6624R6620
C6616R6622
C6615
R6623
R6625
R6656
C3428
R3429
L2800
C2800
L2801
C2801
R2803R2804
R2806R2808
TL2800
TL2801
R2805R2807
TL2802
C6612
IC2800
R2802
R3439
R3447
R3438
L3405
Q3403
C3479
R3440
R3443
R3449
C3474
R3435R3491R3480R3482
R3425
R3422
R3424
IC3401
R3414
R3409
R3413
C3413
R3430
C3412
C3406
C3402
R7847
C7816
R7858
R7857
R7856
C7813R7827
TL4415
R4450
R4412
R4413
Q4440
@@
TL4404
R4418
R4430R4427
C4409R4419
R4417C4408
C1410
C1414
R1451
C1416
C1418
C1417
R1421
R1461
R1462
R1729
R1730
R1705
R1706
R1731
R1732
R5005
R5006
R3407
C3408
R3442R3404
Q3401
R3441
C3403
C3405
C3401
L3401
C3443
R3401
C3442
TL3344
R4403
C4403
C7850
R7860
R7859
C7810
C7811
C7822
C7821
C7807
R7804
R7805
R7811
C7804
R7810
R7807
C7802
R7808
R7809
R7806
R7802
C7805
C4417
R7801
R7800
C4430
C7800
C4401
C4421C4419
R4401
C4410
L4402
C4413
C4404
IC4471
TL7823
TL4405
C4440
R4441
C4402
C4441
R4402
R4416
Q1401
R1452
R4440
IC4472
R1733
R1734
R1721
R1708
R1709
TL1915
C1708
R1707
R1704
C1704
L1702
C1703
IC1701
TL5022
C1702
C1709
C1707
C1701
C1706
TL1947
C1711
C1705
TL1948
TL1949
TL1950
TL5047TL5046TL5045TL5044
TL5037
TL5039
TL5042
TL5038
TL5043
C6628
C6624
C6623
C6626
R6630
C6629
R6631
C6627
R6632
R6633
C6631
R6635
R6634
R6638
C6637
C6636
R6640
R6639
R6641
R6642
C6638
R6636
Q6603
R6660
R6661
R6659
R6643
C6634
C6633
C6635
R6637
TL604
Q601
TL605
C636
L603
Q606
R641
TL37
TL35
TL29
TL27
TL26
TL36
TL34
TL32
TL31
TL30
C641
TL33
TL38
TL210
TL212
TL211
IC202
C211
C207
R201
C210
L1402
C1402
C1415
TL5134
TL5131
TL5133
TL5122
TL5124
TL5126
TL5104
TL5103
TL5102
C6639
R6644
C6640
C6632
C6641
R621
R6645
TL603
R663
Q608
R609
Q602
R688
R685
R686
R610
TL572
TL559
TL560
C686
TL570
TL561
R639
R651
TL571
C646R656
C651
TL563
C637
C690
R640
TL554
TL553
C642
C638
TL557
C639
TL555
C605
TL558
R670
TL562
TL564
TL565
TL568
TL567
TL551
C640
TL566
TL552
TL569
TL556
R4461
C4462
R4462
C4465
R4465
Q4462
R4464
R4469
Q4461
R4460
C4463
TL28
R4463
C4464R4468
TL23
R4467
C4461
L601
Q4431
L4481
Q4432
C218
C215
TL207
C212
C1434
Q1433
TL202
TL203
C208
L1431
Q1431
R1401
TL1410
R5004R5003
L1404
TL5007
TL5006
TL1951
TL5110
TL1924
TL5115
TL5135
TL5008
TL5114
TL5101
TL5009
TL5010
TL5140
TL5118
TL5107
TL5012
TL5106
TL5105
TL5109
TL5015
TL5111
TL5112
TL5113
TL5108
TL5002
PCO D/A-C
SC5002
EE level check
Frequency character check
TL2801(G OUT)
DAC full-scale
TL2800(R OUT)
DAC full-scale
TL826
TL3331
TL2802(B OUT)
TL827
TL3332
R1819
DAC full-scale
R3453
TL1801(C OUT)
COMMON PULSE
IC3404
TL1800
COMMON PULSE
C3458
TL3335
R3493
R3492
TL3340
IC3405
C3462
R3475
R3474
R3495
R3494
TL3302
TL3304
TL3311
TL3309
TL3313
TL3312
TL3314
TL4405(B-Y OUT)
DAC_B-Y
TL3321
TL3323
TL3325
TL3327
TL4403(Y OUT)
TL3320
DAC_Y
TL3336
TL7823(GND)
DAC_Y, DAC_R-Y, DAC_B-Y
TL4404(R-Y OUT)
DAC_R-Y
TL1902
TL1906
TL1905
TL1904
TL1907
SC900
TL1926
TL1934
26
VL-WD650U
[Making adjustments]
Adjusting the servo system controller and related parts
1. Setting the system codes
Replacement of IC703 E2PROM requires the following data to be set in this order.
[Procedure]
Set the unit to the VCR mode and set the data for each address.
Code
Address 01 09 02 0A 03 0B 04 0C 05 0D 07 0F
Data 00 FF 01 FE 14 EB 00 FF 00 FF 01 FE
When replacing the IC703 E2PROM, first make the following settings and then start the adjustments.
(1) Electromagnetic conversion
Address 27 28 2B *105 25 26
Data 40 90 90 80 40 90
* The address uses only when replacing the IC302.
• Adjustment with automatic machine
Mode VCR ADJ mode
Procedure 1) Using the 12 command, set the VCR adjustment mode.
Examples • During E
1. Model code 2. Destination code 3. Specification code 4. Menu selection code 5. Software switching code 6. Calender switching
2
2) Using the 20 command, give the E
PROM Write permission.
3) Set the system code with the 22 command for each type.
4) Using the command, set write inhibition.
5) Using the command, cancel the adjustment mode.
2
PROM (IC703) replacement.
• Manual adjustment
Mode VCR ADJ mode
Procedure 1) Set the CAM/OFF/VCR selection switch to VCR.
2) Press “CONTINUE” → ”VCR adjustment” on the remote controller to set the VCR adjustment mode.
(At this time an indication “VCR ADJ” appears at the left lower side.)
Enter a setting corresponding to the address.
<Setting method>
3) Adjust the address by moving up and down the blinking numeral with the FF and REW key, and fix the address
by pressing the PB key.
4) Adjust to the setting by moving up and down the blinking numeral with the FF or REW key, and set data by
pressing the PB key.
5) Press the STOP key to set the address set state.
6) Repeat the operations 3), 4) and 5) as much as input addresses. After completion of input of all items hold
down the “CONTINUE” key to cancel the VCR adjustment mode.
7) Set the CAM/OFF/VCR selection switch to OFF.
2
Examples • During E
PROM (IC703) replacement.
2. HSWP adjustment
Mode VCR ADJ mode
Procedure 1) Play back the alignment tape in the video mode.
2) Press the "CONTINUE" and "HSWP ADJ" keys on the adjustment remote control in this order.
→ This executes the HSWP adjustment.
When the adjustment is successful, the LCD lights up [OK] and the cassette is automatically ejected. If not
properly adjusted, the LCD lights up [NG].
Examples • During mechanism replacement. • During E
2
PROM replacement (IC302 inside the head amplifier circuit board).
3. SHUT OFF adjustment
Mode VCR ADJ mode
Procedure 1) Load a recordable tape, and set the camera mode.
Press the "CONTINUE" and then the "TEST SEL" on the remote control for adjustment to enter the TEST mode (T-01 blinks).
2)
3) Select T-03 with the FF or REW key and then press the PB key.
4) Observing the power voltage from TL900(-), set it so that TL904(+) obtains 6.00V ± 50mV.
5) Press the PB key on the main unit. Turn off the power and the adjustment is completed.
Examples • During microcomputer (IC701) or E2PROM (IC703) replacement.
27
VL-WD650U
Tape is EJECT.
The built-in VI/O
colour bar is recorded.
VS REW
PB
Phase and
equalizer are
adjusted
automatically.
Judgment
OK:
Blue LCD comes on.
NG:
Red LCD comes on.
8
0
R1451
0
1
4
1
4
C1404
R
4
ADJUSTING THE ELECTROMAGNETIC CONVERSION CIRCUIT SYSTEM
1. PLL VCO adjustment
Mode VCR ADJ mode
Procedure 1) Playback the alignment tape (or a self-recorded tape).
2) Call the adjustment mode (V-ADJ).
3) Set the address "2A" and call the data.
4) Set the called data with the FF/REW key to the point where the playback screen appears.
(At this time, the screen full of block noise is OK.)
Examples • During E
2. Phase and equalizer adjustment → (Performed in the VCR mode)
Mode VCR ADJ mode
Procedure 1) Load a self-recorded tape into the deck.
2) After playback for 3 minutes, select the test mode 0F using the remote control for adjustment to start the
automatic adjustment. (The following sequence is automatically performed.)
3) Error rate check
Select and fix the TEST MODE 0B on the adjustment remote control.
4) Manual adjustment method (video adjustment mode)
* Perform this adjustment with the self-recording/playback in the LP mode.
For phase, vary the data for the address 26 and 2B, and for equalizer, vary the data for the address 25 and 27,
to set the error rate is made as small as possible.
H ch side 2B 27
L ch side 26 25
2
PROM replacement. • During circuit board (Main) replacement.
Error rate
Synchronization error 20 or less
Error rate 200 or less (SP Mode)
Phase Equalizer
Synchronization error
H
L
330 or less (LP Mode)
Examples • During mechanism replacement. • During circuit board (Main) replacement. • During E2PROM replacement.
ADJUSTING THE VIDEO I/O CIRCUIT SYSTEM
(Wiring board diagram: Main Side B)
Q1432
C1
R14
C1409
TL143
R1441
1. PCO D/A-Y adjustment
Test point TL5004 (connected to oscilloscope) Mode EE mode
Procedure 1) Connect the AVS cable and then connect it to the monitor (TO).
Examples • During E2PROM replacement. • During IC4401 replacement. • During IC1401 replacement.
C1434
TL202
C211
TL203
C207
R201
C208
C210
L1402
C1402
C1415
TL5134
TL5131
TL5122
TL5124
TL5104
TL5103
L1431
Q1431
R1401
TL1410
R5004R5003
L1404
TL5007
TL5006
TL5110
TL1924
TL5115
TL5135
TL5008
TL5114
TL5101
TL5009
TL5010
TL5140
TL5118
TL5107
TL5012
TL5106
TL5105
TL5109
TL5015
TL5111
TL5112
TL5113
TL5108
TL5002
PCO D/A-C
2) Call the adjustment mode (V-ADJ).
3) Set the address to "22", and call the date.
(100% white signal is output.)
4) Vary the date with the FF and REW keys to set the signal appearing at TL5004 to 1.0Vp-p ± 0.05Vp-p.
C1433R1433
C1440
R1435R1434
R1437
R1403
C1435
R1436
R1404
Q1433
C1431
R1453
C1441
TL5002
TL5004
TL5001
TL1951
TL5013
TL5004
PCO D/A-Y
R1415
C1438
R1408
IC1431
R1402
R1413
C1439
R1414
R1419
Q1405
C1407
R5007
SC5001
IC1401
D1403
C1406
TL5016
TL5011
C1703
C1417
R1421
R1461
R1462
R1729
C1411
R1730
R1705
R1706
R1731
C1412
R1732
R5005
R5006
TL5021
TL5019
TL5017
TL5022
C1702
C1701
TL1947
C1705
TL1948
TL1949
TL1950
L17
C1416
R1452
C1418
28
C1704
C171C17
TL17
C1720C171
C1717C171
TL1916
C1724
SC900
IC1701
C1725 C1902
TL1704
R1715
C1726
TL1926
TL1934
C1727
C1723
C1722
R1722
C1715
C1713
C1709
C1707
C1716
C1706
C1711
TL1703
R1712
TL1913
TL1705
C1721
R1716
C1719
L1701
1.0±0.05
2. PCO D/A-C adjustment
8TL8TL8TL8
Test point TL5002 Mode EE mode
Procedure 1) Connect the AVS cable and then connect it to the monitor (TO).
2) Call the adjustment mode (V-ADJ).
3) Set the address to "23", and call the data.
4) Vary the data with the FF and REW keys to set the signal appearing at TL5002 to 0.64Vp-p ± 0.05Vp-p.
Examples • During E2PROM replacement. • During IC4401 replacement. • During IC1401 replacement.
ADJUSTING THE LCD CIRCUIT
* To make this adjustment, set the backlight switch to the "NORMAL" position.
(Wiring board diagram: Main Side B)
VL-WD650U
TL
TL816
TL819
TL817
TL815
TL823
TL812
TL811
TL810 TL813TL814
TL809
TL808
TL807
TL805
TL804TL806
R5804
R5803
TL803
R5802
R5805
TL802
TL801
TL703
R1804
TL702
C1801
TL831
TL1801
TL834
C2804
R1802
Q1800
C1800
TL1800
C2802
R1800
R1801
TL1936
R3469
R3471
R3451
IC3403
C3456
C3457
C3475
R3437R3462C3429C3471C3434C3431
R3452
C3453
R3450
R3423
C3454
C3481
TL3401TL3403
C3423
FL3402
C3421
C3419
C3417
R3412C3466C3420
R3411R3410C3414
C3411
C3409
TL3379
FL3401
TL3378
TL3374
Q3405
TL3372
TL3338
SC801
TL821
R1803C1810C2803
D1800
C3455
C3460
TL3307
TL3306
TL3380
TL3375
TL3377
TL3373
L3348
TL826
TL3331
TL827
TL3332
R1819
R3453
IC3404
C3458
TL3335
R3493
R3492
TL3340
IC3405
C3462
R3475
R3474
R3495
R3494
TL3302
TL3304
TL3311
TL3309
313
312
TL2801(G OUT)
DAC full-scale
TL2800(R OUT)
DAC full-scale
TL2802(B OUT)
DAC full-scale
TL1801(C OUT)
COMMON PULSE
TL1800
COMMON PULSE
TL7800(AFC)
VCO free-run
TL503
C6621
TL5035
TL5036
TL5041
TL5037
TL5039
TL5042
TL5038
TL5043
C6623
C6626
R6630
R6631
C6627
R6632
R6633
R6635
R6634
C6637
C6636
R6640
R6641
R6642
C6638
R6636
Q6603
R6661
R6659
R6643
C6634
C6633
C6635
R6637
R6644
C6632
TL604
R621
Q601
TL603
R663
TL605
Q608
Q602
R688
R686
C636
R610
TL572
TL559
TL560
C686
TL570
TL561
R639
R651
TL571
C646R656
L603
C651
TL563
C637
C690
R640
TL554
TL553
Q606
C642
R641
C638
TL557
C639
TL555
C605
TL558
TL562
TL564
TL565
TL568
TL567
TL551
C640
TL566
TL552
TL569
TL556
R4461
C4462
R4462
5
5
C6622
R6628
R6629
C6630
C603
C6646
C633
TL4451
R6652
R6653
R660
Q604
R671
IC601
D4452
R6605
IC6601
R6651
R6654
R6648
R6649
R6650
C6647
C6645
C6644
R6647
C6642
R603C616
R617
Q605
R661
R618
R616
R662
TL602
C606
R613
R672
C623
C617
C624
TL601
C628
C629
R635
R654
C645
R636
C631
C632
R638
R631
C625
R4454
3
C6628
C6624
C6629
C6631
R6638
R6639
R6660
C6639
C6640
C6641
R6645
C6643
R609
R687
R685
C685
R670
C634
R4466
TL6601
TL6603
TL6604
R6606
R6610
R6608
C6604
C6606
R6607
C6601
R6609
R6602
R6612
C6607
C6603
C6602
C6605
R6614
C6608
C6609
C6611
R6613
C6610
R6619R6616
R6615
R6617
C6612
C6614
R6618
C6613
R6624R6620
R6621
C6618
C6616R6622
C6617
C6619
C6615
R6658
R6623
R6657
Q6602
R6627
R6656
R6625
R6626
C6620
C6648
R6646
C3473
L6601Q6604
R3446
C3432
IC3402
TH3401
R3488
R3445
R3427R3426
R3425
R3486R3432
C3428
R3424
R3487
R3429
TL3352
C3433
R3428
C3426
R3421
L3404
C3424
C3436
TL3333
C3477
R3473
R3419
Q3404
R3454
C3476
R3472
R3479
R3478
R3420
R3470
C3470
C3467
C3418
R3416
FL3403
C3416
R3417
C3415
R3418
C3478
C3412
R3415
C3406
L3402
C3425
R3402
L3401
C3402
C7844
R7847
TL7800
C7816
R7858
R7841
R7852
R7843
R7855
R7854
TL6606
TL6605
TL6607
R5801
R5800
L2800
C2800
L2801
C2801
R2803R2804
R2806R2808
TL2800
TL2801
R2805R2807
TL2802
IC2800
R2800
R2801
R2802
R3439
R3447
R3438
L3405
R3457
C3459
R3444
Q3403
R3468
C3479
C3452
R3448
R3440
R3443
R3449
C3474
R3436
R3435R3491R3480R3482
R3463C3430R3490R3481C3444
R3422
TL3406
IC3401
R3414
R3409
R3413
C3413
R3430
R3434
C3410
R3407
C3408
R3406
R3442R3404
Q3401
C3465
R3441
C3403
C3405
C3401
R3496
C3443
R3401
R3489Q3406
C3442
TL3344
R4403
Adjustment procedure and connecting same as the VCR section.
1. VCO free-run adjustment
Test point TL7800(AFC) Address VCR ADJ 32
Mode VCR AV input
Procedure 1) Input the white 100% signal to AV input.
2) Connect the digital voltmeter to TL7800, and adjust DC voltage value to the specified adjustment value with
VCR ADJ 32.
Adjustment 2.00 ± 0.1V
rating
Examples • During E
• During D/A Converter (IC4701) replacement.
2
PROM (IC703) replacement. • During VIO ENG (IC4401) replacement.
2. DAC full-scale adjustment
Test point TL2800(R OUT), TL2801(G OUT), TL2802(B OUT)
Address VCR ADJ 3D(R), VCR ADJ 3E(G), VCR ADJ 3F(B)
Mode VCR AV input
Procedure 1) Set the VCR ADJ 83/93/C0 to 00/77/00. (At this time, LCD can not be displayed.)
2) With the VCR ADJ 3D, adjust the output voltage of TL2800 and the DC voltage value of the digital voltmeter to
the specified adjustment values.
3) Similarly with the VCR ADJ 3E/3F, adjust the output voltage of TL2801/2802 and the DC voltage value of the
digital voltmeter to the specified adjustment values. (Same as Item (2))
4) Return the VCR ADJ 83/93/C0 to the initial value. (Initial value: C5/7F/28)
Adjustment 0.78V ± 10mV
rating
Examples • During E2PROM (IC703) replacement. • During VIO ENG (IC4401) replacement.
• During D/A Converter (IC4701) replacement.
29
VL-WD650U
c
3
L
R78
3
6
3. COMMON PULSE adjustment
Test point TL1801(C OUT) Address VCR ADJ 29(C)
Mode VCR AV input
Procedure 1) Connect TL1800 to GND.
2) With VCR ADJ 29, adjust the output voltage of TL1801 and the DC voltage value of the digital voltmeter to the
specified adjustment values.
Adjustment 6.95V ± 50mV
rating
Examples • During E2PROM (IC703) replacement. • During D/A Converter (IC4701) replacement.
4. COM-BIAS adjustment
Test point LCD panel display surface Address VCR ADJ 33
Mode VCR AV input
Procedure 1) Input the white 100% signal to AV input.
2) Set up the illuminance meter (TOPCON IM-3) on the LCD panel surface. (The outside light must not enter.)
3)Minimize the ripple of the output waveform of the illuminance meter.
Adjustment Minimum
rating
Response timeF0.6se
Remark Make this adjustment after 5-minute or longer aging.
Examples • During LCD monitor replacement. LCD Panel • During IC4701, IC703 replacement.
5. White Balance adjustment
Test point LCD panel display surface Address VCR ADJ 84(R), VCR ADJ 86(B)
Mode VCR AV input
Procedure 1) Input the white 40% signal to AV input.
2) Input the white 40% signal to the standard monitor, and adjust it to become equal to that of the screen.
Adjustment Standard monitor
rating
Remark Make this adjustment after 5-minute or longer aging.
Examples • During LCD monitor replacement. LCD Panel • During IC4401, IC4701, IC703 replacement.
VIDEO I/O ENG DAC CIRCUIT
C446R44
IC4461
Q4462
R4464
R4469
Q4461
R4460
C4463
C4464468
R4467
C4461
Q4431
L4481
Q4432
C4483
C215
C4481
TL207
C212
Q1432
434
C784
R7851
C4454
R4453
X4451
C4466
R4451
D4451
L4461
R4473
Q4471
R4474
R4477
Q4472
C4435
R4424
R4425
R4428
C4405
R4486
R4488
Q4481
R4485
C4485
Q1434
R1438
C1432
R1432R1431
R1439
C1436
R1440
C1437
441
C7842C4432
C4431
FB4494
TL4428
TL4429
R4456
TL4433TL4435
R4452
TL4434
C4451
C4427
R4478
C4426
C4423
TL4417
C4424
C4422
R4475
TL4416
C4420
C4472
C4482
C4412
C4411
R4435
R4406
R4407
R4405
R4404
R4415
C4436
Q4433
Q4434
R4443
R4422
R4426
R4423
C4406
R4436
Q4482
R4487
R1442
R4420
C1405
C1408
D1402
R1454
C1404
L1431
C1409
C7841
D7800
C7815
IC4401
R4409
R4410
R4408
Q4442
TL4403
TL8800
C1413
C4403
R7856
C7813R7827
C7850
R7860
IC7801
R7859
C7808
C7810
C7811
C7822
C7821
C7807
R7804
R7805
R7811
C7804
R7810
R7803
C7806
R7807
C7802
R7808
R7809
R7806
R7802
R7812
C7805
C4417
R7801
R7800
C4430
C7800
C4401
L7800
C4421C4419
R4401
C4410
L4402
TL4415
R4411
C4413
R4450
R4412
R4413
C4404
IC4471
TL7823
TL4405
Q4440
Q4441
@@
C4440
R4441
R4442R4437
C4402
TL4404
C4441
R4418
R4402
R4416
R4421C4407
R4430R4427
R4429R4499
C4409R4419
R4417C4408
C1410
Q1401
C1414
R1451
1452
R1725
R4440
R1726
IC4472
R1724
R1720
R1733
R1734
R1721
R1708
R1709
TL1915
C1708
R1707
R1704
C1704
L1702
C1710
57
L7801
C7837
L4451
1. DAC_Y adjustment, DAC_R-Y adjustment, DAC_B-Y adjustment
Test point TL4403(Y OUT), TL4404(R-Y OUT), TL4405(B-Y OUT), TL7823(GND)
Mode CAM
Address VCR ADJ FA(Y), VCR ADJ FB(R-Y), VCR ADJ FC(B-Y)
Procedure 1) Set VCR ADJ 303/304/432/423/424/425/526 to 0C/EF/63/90/EB/80/80.
2) With VCR ADJ FA, adjust the output voltage of TL4403 and the DC voltage value of the digital voltmeter to the
specified adjustment values.
Adjustment 0.450V ± 5mV (Y OUT), 0.229V ± 2mV (R-Y OUT), 0.290V ± 2mV (B-Y OUT)
rating
Examples • During IC4401, IC4701, IC703 replacement.
3) Similarly with VCR ADJ FB/FC, adjust the output voltage of TL4404/TL4405 and the DC voltage value of the
digital voltmeter to the specified adjustment values. (Same as Item (2))
4) Return VCR ADJ 303/304/432/423/424/425/426 to the initial value.
Note:When it is changed to the initial value FF/FF/C3/10/29/6E/F0, OSD display goes out together with LCD/VF.
Checking the monitor output, adjust it. After adjustment, be sure to return to FF.
T
R3499
TL3366
TL4438
TL4437
TL4439
TL3364
R7813
TL3365
R7814
TL3350TL3345
R4414
TL1925
L4401
TL3371
TL3343
R1727
R1728
Q1701
R1723
TL1701
TL1917
R1711
R1710
C1712
1717
1714
TL3TL
TL3346
TL3368
TL3316
TL3317
TL3362
TL3363
TL3318
TL3360
TL4436
TL3321
TL3322
TL3358
TL3323
TL3324
TL3356
TL3325
TL3326
TL3353
TL4440
TL3327
TL3328
TL3354
TL3351
TL3320
TL3330
TL3319
TL3355
TL3336
TL3341
TL3329TL3315TL3370
C1728
R1714
R1713
TL1904
TL1907
TL1903
TL1901
1720
1718
6
TL1702
(Wiring board diagram: Main Side B)
TL3314
TL4405(B-Y OUT)
DAC_B-Y
TL4403(Y OUT)
DAC_Y
TL7823(GND)
DAC_Y, DAC_R-Y, DAC_B-Y
TL4404(R-Y OUT)
DAC_R-Y
TL1902
TL1906
TL1905
30
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