Sharp VL-SW50U User manual

VL-swsou
SHARP SERVICE MANUAL
S58P5VL-SWSOU
LIQUID CRYSTAL CAMCORDER qNTSC
_A
MODEL vL-sw5ou
In the interests of user-safety (Required by safety regula-
tions in some countries) the set should be restored to its
original condition and only parts identical to those specified
be used.
CONTENTS
1.
2.
3
4:
5.
6.
7.
8.
9.
Page
IMPORTANT SERVICE NOTES ........................................................................................*............ l-l
SPECIFICATIONS ........................................................................................................................... 2-l
PART NAMES AND FUNCTION ......................................................................................................3-1
DISASSEMBLY OF THE SET ..........................................................................................................4-l
MECHANISM ADJUSTMENT ...............................................................................~.......................... 5-1
ADJUSTMENT OF VCR ...................................................................................................................6-l
SYSTEM BLOCK DIAGRAM ........................................................................................................... 7-l
SCHEMATIC DIAGRAMS ............................................................................................................... 8-1
SEMICONDUCTOR LEAD IDENTIFICATION ..........................................................~..................... 9-l
lO.PRINTED WIRING BOARD ASSEMBLIES ................................................................~.................. 10-l
11.REPLACEMENT PARTS LIST ............................................................................................~......... 11-l
12,PACKING OF THE SET ................................................................................................................ 12-1
13.AC ADAPTER ............................................................................................................................... 13-1
SHARP CORPORATlON This document has been published to be used for
after sales service only.
The contents are subject to change without notice.

VL-sw5ou
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, isola-
tion resistor/capacitor networks, mechanical insula-
tors etc.
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 ex-
posed 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.
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).
l Using two clip leads, connect a Kkohm, 10watt resistor
paralleled by a 0.15pF capacitor in series with all
exposed metal cabinet parts and a known ground,
such as a water pipe or conduit.
. Use aVTVM or VOM with 1000 ohm pervolt, or higher
sensitivity or measure the AC voltage drop across the
resisor (See Diagram).
. Move the resistor connection to all exposed metal
parts having a return path to the chassis (antenna
TO EXP
METAL
CONNECT TO
KNOWN EARTH
GROUND
1. NOTES DE S RVICE IMPORTAhlTES
AVANT DE RENDRE LE MAGNETOSCOPE
Avant de rendre le magnetoscope a I’utilisateur, effectuer
les verifications de securite suivantes.
1. Verifier toutes les gaines de fil pour etre sur que les fils
ne sont pas pin&s ou que le materiel n’est pas coin&
entre le chassis et les autres pieces metalliques dans le
magnetoscope.
2. Verifier tous les dispositifs de protection tels que les
boutons de commande non metalliques, les materiaux
d’isolement, le dos du coffret, les couvercles de
compartiment et ajustement ou les boucliers, les
reseaux de resistance / condensateur d’isolement,
les isolateurs mecaniques, etc.
3. Pour etre sur qu’il n’y aaucun risque de choc electrique,
verifier le courant de fuite de la maniere suivante.
retour au chassis (connexions d’antenne, coffret
metallique, t&es devis, boutons et arbres decommande,
etc.) et mesurer lachute de tension CAentre la resistance.
Inverserlafiche CA (unefiche intermediaire non polarisee
doit etre utiliseeaseulefin defairecesverifications.) sur
I’appareil et repeter les mesures de tension CA pour
chaque piece metallique exposee. Toute lecture de
0,45 V rms (ceci correspond a 0,3 mA rms CA) ou plus
est excessive et signale un danger de choc qui doit etre
corrige avant de rendre le magnetoscope a son
utilisateur.
. Brancher lecordon d’alimentation secteurdirectement
dans une prise de courant de 120 volts. (Ne pas
utiliser de transformateur d’isolement pour cet essai).
. Utiliser deux fils a pinces et connecter une resistance
de IO watts I,5 kohm en parallele avec un
condensateur de 0,15 I_LFen serie avec des pieces du
coffret metallique exposees et une masse de terre
connue telle qu’un tuyau ou un conduit d’eau.
. Utiliser un VTVM ou VOM avec une sensibilite de
1000 ohms par volt ou plus ou mesurer la chute de
tension CA entre la resistance (voir diagramme). VERS PIECES
METALLIQUES
. Deposer la connexion de la resistance a toutes les
pieces metalliques exposees ayant un parcours de
1-l

vL-sw5ou
WARNING :TO REDUCETHE RISK OF FIRE OR ELECTRIC SHOCK, DO NOT EXPOSE
THIS APPLIANCE TO WET LOCATIONS. 1
A l
AA
RISK OF ELECTRIC SHOCK
DO NOT OPEN
CAUTION: TO REDUCE THE RISK OF ELECTRIC
SHOCK. DO NOT REMOVE COVER. NO
USERSERVICEABLE PARTS INSIDE.
REFER SERVICING TO QUALIFIED SERVICE
PERSONNEL.
A This symbol warns the user of uninsulated
voltage within the unit that can cause danger-
ous electric shocks.
This symbol alerts the user that there are
important operating and maintenance instruc-
tions in the literature accompanying this unit.
CAUTION
This symbol mark means following. Camcorder
For continued protection against fire haz- only
ard, replace only with same type fuse.
(CP901; 2.5A 72V, CP902; 2A 72V)
CAUTION
This symbol mark means following. AC Adapter
For continued protection against fire haz- only
ard, replace only with same type fuse. A
(Fl; 1.5A 250V)
AmENTION: POUR REDUIRE LES RESQUES D’INCENDIE OU DE CHOC ELECTRIQUE,
NE PAS EXPOSER CET APPAREIL A LA PLUIE OU A L’HUMIDITE.
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 a I’utilisateur la presence
d’une tension non isolee a I’interieur de I’appareil
qui peut etre la cause de secousses electriques
dangereuses.
n I
Ce symbole avertit I’utilisateur que des in-
structions importantes relatives a I’utilisation
0 et al’entretien se trouvent dans le manuel
accompagnant I’appareil.
ATTENTION
Cesymbole signifie que t’on devra uti- Camcorder
liser un fusible de meme type (CP901; seulement
2.5A 72V, CP902; 2A 72V) pour assurer
la securite.
n
AmENTION
Cesymbole signifie que I’on devra uti- Adapt&ur CA
liser un fusible de meme type (Fl; 1.5A, seulement
25OV) pour assurer la securite.
12
I

A CAUTION
BEFORE BATTERY DESTROY
NICKEL-CADMIUM BATTERY
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.
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 I-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 BAlTERY
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.
1-3

2. SPECIFICATIONS
Signal System:
Recording System:
Cassette:
Recording/Playback Time:
Tape Speed:
Pickup Device:
NTSC standard
2 rotary heads, helical scanning system
8 mm video tape, MP type
120 minutes (P6-120)
14.345 mm/second
l/d” (6 4mm effective size: 4.5 mm) CCD image sensor (with approx.
270,060 pixels including optical black)
Zoom Lens: 10 x power zoom lens (Fl.8.2.8, f=4.5-45 mm), and full-range auto
focus
F 2.2, f=3.2mm, and fixed focus
,30mm
Wide Angle Lens:
Zoom Lens Filter Diameter:
Viewfinder:
Monitor:
Microphone:
Color Temperature Compensation:
Minimum Illumination:
Electronic LCD color viewfinder
4” (10.1 cm) full-color LCD screen (TFT active matrix)
Electret monaural microphone
Auto white balance
1.2 lux (8 lux measured by EIA standard) (with gain-up, Fl.8 with zoom
lens)
Video Output Level: 1.OVp-p 75.ohm unbalanced
Audio Output Level: -8 dBs, impedance less than 2.2 kohms
Speaker Output: 200 mW
Power Requirement: DC 3.6V
Power Consumption: 5.4W (during camera recording using the viewfinder in full auto mode
with zoom motor off, Extend Zoom, DIS and Snapshot functions off, and
backlight in normal mode)
6.6W (during camera recording using the LCD screen in full auto mode
with zoom motor off, Extend Zoom, DIS and Snapshot functions off, and
backlight in normal mode)
Operating Temperature:
Operating Humidity: O°C to + 40°C (32°F to 104°F)
30% to 80%
Storage Temperature: -2OOC to +6O”C (-4°F to 140°F)
Dimensions (approx.): 3 ‘g/32” (W) x 4 ‘/41’(H) x 9’9/32” (D)
191 mm (W) x 108 mm (H) x 244 mm (D)]
Weight (approx.): 1.76lbs (800g)
(without battery pack, lithium battery, video cassette and lens cap)
AC Adapter/Battery Charger
UADP-0274TAZZ Battery Pack BT-H22
DC Output: 3.6V
Power Requirement: AC 1IO-240 V, 50/60 Hz Dimensions (approx.): 2 l/d’ o(v) x 3/<’(H) x 2 7/&’ (D)
DC Output: 4.5 V [54mm(W)xl9mm(H)x
Power Consumption: 16 W 56 mm (D)]
Dimensions (approx.): 2 31/3$’(W) x 2” (H) x 5 5/16”(D) Weight (approx.): 0.30 Ibs (136 g)
[75 mm o(v) x 51 mm (H) x
135 mm (D)]
Weight (approx.): 0.65 Ibs (295 g)
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 I-800-BE SHARP (I-800-237-4277) or visit SHARP’s
web site (http://www.sharp-usa.com)
2-1
VL-sw5ou

lSW5OU
3. PART NAMES AND FUNCTION
For details on the use of each control.
Fast Forward/Forward Search button
STOP/BLC (Backlight Corn
GAIN-up button
PLAY button
REWind/Reverse
I
PAUSE/STILL/M
Search button FOCUS button
FADE button
DIS (Digital Image Stabi
buttor
MENU button
Remote sensor
SELECT LENS button
lpensation)/
anual
Diopter adjustment
-OPEN release
Speaker I LCD monitor
WIPE/MOVE button
I
Picture-in-Picture button

VL-sw5ou
.
VI
ewfind
Power switch (CAMERA/VCR
select switch)
LCD color viewfinder h-1
Batter
sur
- RECord START/STOP button
er eyecup t3scx
1 I f& Jack cover
y pack mounting
face -- l - compartment
O/VIDEO
battery
Power Zoom Wide/Telephoto control
VOLume control
When the cassette compartment door is open
“PUSH” mark Cassette compartment door
release
Cassette compartment
Shoulder strap loops
Cassette
door compartment
nd strap
Tripod socket
3-2

VL-swsou
Viewfinder/LCD Monitor Indicators
Tape operation indicators Recording mode indicators
. b
PLAY Play F’: !%ard &sH ~~~~hd L ’ ‘lrn wmww The camcorder is in Recording Standby
mode, and is not recording.
HI
STI LL ““’ RE,,,, Rewind b*
44 Reverse l ))W Recording
SEARCH search
I 1 I
(Continuous flashing)
Lighting (LIGHT)/
Backlight compensation (m)/
Gain-up (UXP) indicators - t Wide-angle lens (SUPERWIDE) indicator
I
I 1
I 1
Date/time indicators I
Picture/volume adjustment
indicators/Zoom indicators/Tape
warnings/Remaining recording
time indicator/Clogged heads
-
. warnrng J
Remaining battery power/ _I
Low battery/Dew warnings
I
l-----l -
-I_ -
I I I
I
Note: Only the date/time indicators are recorded on the tape along with
the subject.
Warning Indicators
r
-
-
-
-
EDIT/AUTO/Manual focus
(M.FOCUS) indicators
Fade/Dissolve/Wipe indicators
Large-character warning displays/
Quick return indicator
Tape counter display
Recording/playback operation
indicators are normally
displayed in white. They are
displayed in blue when selected
functions are in progress.
:JECT THE The video cassette is defective and should be removed.
CASSETTE. _.'iji6=f_. XI t:'
DEW : .*
...bEW.-
.J1i
Dew has formed inside the camcorder. Wait for a few hours until the
dew disappears.
About IO seconds after this warning appears, the camcorder
automatically turns off.
BATTERY IS ' The battery is almost depleted. Replace it with a fully charged battery
T()() L ()W, ._bAT&_. .- / ! 5 ..- pack.
0 I ....;&;. I
The video heads are clogged and should be cleaned.
i I
INSERT t There is no video cassette in the camcorder. Load a cassette.
. . ,+
A CASSETTE, ++S~T,TE’-
ZASSETTE NOT ...PRijf&'ij(B_.
The red erasure protect tab on the video cassette has been slid to the
3ECOR DA B L E , a” 1 1 :’ \. .I. record-protect position, preventing recording.
THE TAPE a ' ’ ;
ENDS SOON, jk! E.;NP-’ The tape is about to end. Get ready to load a new cassette.
CHANGE THE
CASSETTE, TAPE END The tape has reached its end. Replace it with a new cassette. I
0
! 0
! When the vertical rotation of the LCD monitor is between 135” and
180°, all warnings will be indicated by ‘@” displayed in the center of
the viewfinder and the LCD screen. To check the meaning of the
warning, rotate the monitor back to within 135”.
Note: -1:I- indicates a flashing display.
33
I

VL-sw5ou
4. DISASSEMBLY OFTHE SET
4-l. Removal of the LCD section
Note:
Before removing the cabinet, turn off the power supply, and ascertain that the battery has been removed.
4-1-1. The Screws
Fig No Name Shape Color Quantity
b Tap Screw Ml.7 Black 1
d Tap Screw M2 Silver 3
Screw
Screw M2 Gold 2 M2 Black 6
I
C
Screw M2
Tap Screw M2 Silver 3 Black 2
VCR iid ’.
f Tap Screw M2 Silver 3 Lithium exchange lid
g Tap Screw Ml .7 Black 1 ADJ
k Screw Ml .7 Silver 4
4-1-2. Order
(1) Remove the cabinet B.
1) Open the VCR lid, remove the screw (b)(one PC.).
2) Remove the screw (I)(one PC.), disconnect the ADJ cover while shifting
obliquely downward.
cover (1)
Tilt unit cover
3) Remove the lithium exchange lid.
4) Open the LCD cabinet, remove the screws (I)(2 PCS.)and disconnect tilt unit
cover.
5) Remove the screws (i)(2 PCS.).(Be careful not to drop the screw into the set.)
6) Remove the screws (d)(one PC.) and (j)(6 PCS.).
7) Disconnect the cabinet B (in the direction of an arrow head).
Release it while it is pushing one claw in this time.
8) Remove the LCD SW UNIT connector and MENU SW FPC.
9) Remove the tilt FPC. Open the lock of connectors and remove two FPCs.
Notes:
1) Keep it afloat while the cabinet B release from the set because the FPCs and
the wires of 8), 9) are connecting the cabinet B.
There are some apprehensions that snapping of the wires. If the cabinet B is
drawed violently.
2) Screw the cabinet B to the set in order @ and @ one by one on setup it.
4-1

vL-sw5ou
(2) Remove the rotation axle.
1) Remove the screw (g)(one PC.) and the LCD SW Unit.
2) Remove the screws (c)(2 PCS.),the rotation axle and earth plate.
(3)Remove the LCD front cover.
1) Remove the screws (d)(2 PCS.).
2) Remove the inside screws (k)(2 PCS.)of the screws (k)(4pcs.).
3) Disconnect the LCD front cover.
(4)Remove the LCD holder.
1) Remove the screws (f)(2 PCS.).
2) Remove the LCD holder.
3) Remove one connector and one FPC.
(5)Remove the inverter unit .
1) Remove the screw (f)(one PC.), the shield sheet and inverter unit.
2) Disconnect the tilt FPCs (2 PCS.).
3) Remove the screws (k)(2 PCS.)and the rotation axle.
4-2

Fig. No Name Shape Color Quantity
C Tap Screw M2 Black 3
d Tap Screw M2 Silver 1
.
J Screw M2 Black 1
I Screw _ M2 _ Silver _ 4
4-2-2. Order.
(1)Remove the front cover.
1) Remove the screws (d)(one PC.), (j)(one PC.) and (I)(4 PCS.).
2) Remove the connectors of the microphone and speaker.
3) Disconnect the FPC of remote control light reception unit after open the
lock of connector.
4) Disconnect the front cover. Remote control light
(2)Remove the lens holder.
1) Open the lock of connectors and remove two FPCs.
VL-SW5OU
Speaker wire
reception unit FPC
2) Remove the screws (c)(3 PCS.)and disconnect the lens holder with lens and camera PWB.
Disconnect
4-3

4-3. Removal of the V/F
4-3-1. The screws
Fig. No Name Shape Color Quantity
g Tap Screw Ml .7 Black 2
l
I Screw M2 Black 1
4-3-2. Order
(1)Disconnect the zoom switch unit FPC.
(2)Open the lock the connector and remove the V/F FPC.
(3)Remove the screw (j)(one PC.) and disconnect the V/F. Zoom switch
FPC
V/F FPC
(4)Remove the screws (g)(2 PCS.)and the V/F bottom cabinet.
4-4. Removal of the VCR
4-4-l. The screws
Fig. No Name Shape Color Quantity
a SP Screw M2 Gold 3
i Screw M2 Gold 3
4-4-2. Order
(l)Remove the VCR.
1) Remove the unload switch unit connector.
2) Remove the lithium holder unit connector.
3) Remove the battery terminal unit connector.
4) Disconnect the VCR operation unit FPC.
5) Remove the special screws (a)(3 PCS.)and discon nect the V
( 1
a
Lithium holder unit \
Battery terminal unit
(2)Remove the VCR board.
1) Remove the VCR board.
2) Remove the screws (i)(3 PCS.).
3) Disconnect the VCR board. 0
i
4-4

VL-sw5ou
0 Disassembly of the LCD panel
I I I I
Claw (A)
(- Reflection sheet
Light guide plate
Diffusion sheet
Prism sheet
Diffusion sheet
1 Reflection Polarizing sheet
Lugs-
1.
2.
3.
4.
Disengage two claws, and
remove the lamp unit (1)
from the LCD holder (2).
Remove the sheets from
the LCD holder (2).
Pull the LCD holding sheet
(3)
Disengage the claw (B) and
the LCD panel (4), remove
the LCD holder (2).
Note:
When handling the prism
sheet, reflection polarizing
sheet, diffusion sheet, light
guide plate, and reflection
sheet, do not touch any parts
other than lugs and sides.
Put the light guide plate and
reflection sheet between re-
flectors of lamp. Therefore,
install them together with the
lamp ass’y.
/
Claw (6)
Disengage the claw B, and remove the LCD panel.
(2)
(4)
4-5

4-5. REPLACEMENT OF CCD SENSOR
4-5-l. Before replacement
The CCD image sensor is more sensitive to electrostatic breakage than CMOS LSI. Therefore sufficient means to
prevent electrostatic damage must be taken when it is replaced.
Ground the soldering iron.
Ground also the human body, using the wrist strap(through an 1 Mohm resistor).
Until the CCDsensor is mounted on the PWB, fit it to the conductive sponge, and short-circuit the foot lead.
Take utmost care so that the surface glass of CCD sensor and optical filter are not contaminated and damaged. If any
contamination is found, for example fingerprint, wipe it off with silicon paper or clean chamois skin.
When replacing the CCD sensor, use the antistaic grounded soldring iron, and perform quickly soldering.
Index Mark
LZ2413H5
L
.ct yywwxxx
Note:
Indication of voltage (ofd) set value.
Voltage set value is indicated on the back of the CCD sensor.
V-OFD voltage marked on the back of CCD
4-5-2. Removal of CCD
1) Unsolder the CCD sensors lead from the sensor PWBs.
2) Take out the sensor PWBs.
3) Remove the 4 screws (6), and remove the CCD retaining plates and CCD sensors.
4-5-3. Mounting of CCD
1) Place the lens units upright (since the CCD sensors mount ID faces upward, care must be taken SCas not to damage the
front lenses of units), put the crystal filters first and then the dustproof rubbers into the CCD holders of lens units. Set
the optical filter units with then thin side toward the earth lens units.
2) Place the CCD sensors so that the theirs No. 1 pins are at the right lower (Positioning holes to be at right), and put the
CCD sensors into the CCD holders. For smooth and tight fitting, press the right lower parts of back of CCD sensors, and
then press the left upper parts.
Note: Pay attention to the direction of CCD sensors.
’ 3) Place the CCD retaining plates so that theirs 4 round markings be visible, and fix the CCD retaining plates with th
screws ((6)LX_HZ0013TAFF).
4) Mount the sensor PWBs so that the CCD sensors lead go thorough the PWB holes.
5) Solder the CCD sensors lead to the sensor PWBs. CCD Retainin
Note: Take care not to apply excessive heat.
CCD Retaining Plate
\
._-___ ___I
I
I Themarkmust be :
1 on this face. I
I 0
KJ I
I I
I 0 I
I I
I M&k I
I
_1_____1-1 I 1TheTHlNSlDE 1
e4
I faces the lens. I
I__--_-_- I
4-6

VL=S\NSOU
5. MECHANISM ADJUSTMENT
5-l. Mechanism checking/adjusting jigs, tools and parts
5-1-I.Mechanism checking/adjusting jigs and tools
l (10 g-cm/25 g=cm)
l (50 g-cm/25 g*cm)
l For measurement
l For adjustment of
Si roller height
8 Guide roller height JiGDRiVERHMX7U BU
/
Bit shape
adjusting driver (See the figure below)
Tolerance&O. 1
4&b
2
Tu guide height 9EQDRiVEKV712 BL
+
I++/ Edge
15 thickness 0.5
adjusting driver
02
8
17 3
9 Hex wrench 1.3 mm l For loosening or
tightening of
Motor stator
5-l

f
Name Part No. Model, Uses Remarks
Code
VR2ABOPS BT
Configuration
9lignment tape
TAPE CONTENTS
1VIDEO IMAGE 1 AUDIO 1 TIME 1
MONOSCOPE L-CH 400Hz 30MlN
R-CH 1,OOOHz
11 Tension Band and
Plate Adjusting Jig JiGDRiVERMX7UZ BN
12 Others
(1) Slide clippers
(2) High-precision screwdrivers (Phillips head, slotted head)
(3) Radio pliers (with thin jaws)
(4) A pair of tweezers
5-1-2. Parts for periodic inspection and maintenance.
No . Name Model, Uses
Configuration
Part No. Code
I
-\.\.\
1 .
011
1) COSMOHYDRO HVIOO
l Cosmo Oil Co., Ltd.
2 Cleaning paper l Dusper C (Sigma)
(Ozu Co., Ltd.)
JiGDUSPER AP
3 Superfine swab
4 Grease
Morycoat YM-103/X5-6020
l Dow Coaning
5 Screw locking agent
(1401B)
l Three Bond
6 Cleaning liquid
(Industrial-use ethyl alcohol]
5-2

VL-SW50U
5-2. Items and timings of inspection and maintenance .
The mechanism of VCR needs the following periodic inspection and maintenance in order that it maintains its high quality Also,
after the machine is repaired, execute the following maintenance and checks regardless of how long it has been used.
5-2-l. Inspection and maintenance list
Checking/Maintenance point Usage time (hrs.) Possible symptom
500 1,000 1,500 2,000 3,000 encountered Remarks
2 Tape travelling route (Refer to Section)
CD
s
L Drum (Refer to Section)
3
g Video head
3
Rollers
0 0 0 0 0 $;;ran”;g;d l If abnormal rotation or
l Screen shaking deflection (signifi-
q cl q cl 0 cant) is found, replace
the roller.
. Other than rollers
0 00 q 00 00 *Improper S/N ratio *Clean the tape con-
l No color appears. tatting areas. Be sure
to use the specified
cleaning agent.
Timing belt
Pinch roller
Capstan D.D. motor
CJ Relay Pulle shaft
2: Pulle gear shaft
cz
3 Drive gear shaft
il;
3
* - * * *Tape does not run. l Replace if failure is
*Tape slackens. found.
0 0 0 00 0 *Screen shakes.
- 0 - () 0
A - A A @Abnormal sound l Apply oil.
(Oil: COSMOHYDRO
HVI 00)
A - A A Note:
After oil is applied to
the drive gear shaft,
slightly wipe it off with
swab.
Loading motor l Not ejectable l Replace if failure (ab-
- *o - *o a l The specific mode can- normal sound) is de-
not be set. tected.
Abnormal sound * * * * * * If conformance to the
a
?, PBNS-REWtake-uptorque - * - * * standard is not en-
g sured, replace part.
2 PBA/S-REW back tension - * - * *
Z torque
CD
2 Tu brake * - * *
% HC (Head Cleaner) 0 0 0
Oil: COSMOHYDRO, HVI 00
Grease: MORYCOAT YM-103/X5-6020
Screw locking agent: THERE BOND 1401 B
Cleaning liquid: Industrial-use ethyl alcohol
0 : Replace.
0 : Clean. A : Apply oil.
* : Check.
5-3

5-2-2. Notes and cautions
(1) Any cut washers, once removed for parts replacement or for other reason, must be replaced with new ones.
(2) The mechanism of this VCR does not involve any volume adjustment. If the specified range is not satisfied, either
cleaning or replacing the parts is required.
(3) Oils
a) Be sure to use the specified oils (different viscosity may cause troubles).
b) For the bearings, be sure to use oil that is free form dust and other foreign substances. (Dust or foreign substance
contained in the oil may cause wear or seizure of the bearings.)
c) A drop of oil represents the amount of oil which is held on the needle top as shown in the figure below.
Oil
(4) The circuit repair must be executed without removing the V frame.
(5) For operating the mechanism alone, actuate it with the motor. The terminal-to-terminal voltage must be DC4V or less.
(6) When installing the cassette control, press the part A shown below. Do not press other parts.
(7) Take care so that the whole mechanism is not deformed.
A /
Figure 1
5-4

VL-SWSOU
5-3. Mechanism checks and adjustments
The description given below relates to the general field services, but does not relate to the adjustment and replacement
that require high level equipments, jigs, and technical skills.
In order to maintain the initial characteristics of the machine, it is necessary to execute the maintenance and check and
to prevent damage to tapes and other parts. For adjustments which need jigs, be sure to use the jigs.
Notes and cautions
(1) For mechanism checks and adjustments, be sure to use the AC adapter as the power supply.
(2) For running the tape, be sure to install the cassette control ass’y in advance. (if the cassette control ass’y is to be
removed subsequently after its installation.)
5-3-l. Checking the reel disk height
(1)Remove the cassette control ass’y.
(2) Taking due care not to let the master plane touch the tape running areas such as the drum and the guide rollers,
position the master plane so that the two guides (A and B in the figure 1) are set in the holes of master plane, then
properly set it in the mechanism.
B A
Figure 1
(3) Using the slide callipers or the like, check that the distance from the upper surface of master plane to the reel support
surface of the Smu reel disk is within the specified range.
Note:
When measuring, do not apply excessive force to the reel support surface of reel disk.
(4) If the measurement is not within the specified range, replace the reel disk ass’y.
(5) Check the items (2) to (4) above in the following two modes.
a) Standby mode
b) Playback (recording) mode
Figure 2

vL-sw5ou
5-3-2. Checking the take-up torque for playback (recording)
(1)Set the torque cassette (8T-012) in position, and check in the SP-mode recording mode (tape recorded in SP mode)
that the torque at the tape taking-up side is within the standard range.
Standard of take-up torque for SP-mode recording (playback)
9 +,3 gem with ripples less than 4 gem
(If the torque ripples appear, read the center value of torque between the ripples.)
5-3-3. Checking and adjusting the back tension torque for playback (recording)
(1) Checking
1) Set the torque cassette (8T-012) in position, and check in the SP-mode recording mode (tape recorded in SP mode)
that the torque at the tape supply side is within the standard range.
Standard of back tension torque for SP-mode recording (playback):
8 & 2 gem with ripples of less than 2 gem
(Torque ripple must be within 8 + 2 gem)
(2) Adjustment
1) If the back tension torque is not within the standard range, adjust the tension spring hooking position. If the back
tension is too high, hook the spring in the direction A. If the back tension is too low, hook the spring in the direction
B.
Note:
1. After back tension torque adjustment be sure to check the tension pole position.
5-3-4. Checking and adjusting the tension pole position
(1) Check
When winding of P6-120 tape is started, check whether the tension pole is in the specified position against Si roller
as shown or not.
If it is not in the specified position, remove the cassette and adjust the position in the following procedure.
(2) Adjustment
(2)-l. Don’t set up any tape, and select the PB mode. (Refer to Item 5-5-l-(4).)
2. Slightly loosen the screw (1) (to such a strength as the T band holder B can be moved).
3. If the tension pole is in the inner position than specified, dislocate the T band holder B in the arrow (A) direction
and if it is in the outer position, dislocate it in the arrow (B) position. Then, tighten the screw (1). (For reference,
dislocate it 0.4 to 0.8 mm outer from the position specified above.) For the position adjustment, it is convenient
to use the position adjustment screwdriver (JiGDRiVERMX7U2). (Set it in the hole (C).)
4.Check the position in the “(1) Check” procedure described above.
5. If it is not in the specified position, repeat the adjusting procedure 1 thru 3.
5-6