SHARP VL-E760U, VL-E765U Service Manual
SHARP SERVICE MANUAL
LIQUID CRYSTAL CAMCORDER q NTSC
VL-E760
MODELS VL-E765
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.
VL-E760U
VL-E765U
I
1.
IMPORTANT SERVICE NOTES
2 .
SPECIFICATIONS
3
PART NAMES AND FUNCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
4:
DISASSEMBLY OF THE SET
.
5
MECHANISM ADJUSTMENT . . . . . . . . . . . ..I..............................................................~.............................
.
6
ADJUSTMENT OF VCR
7 .
SYSTEM BLOCK DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
8 .
SCHEMATIC DIAGRAMS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
9 .
SEMICONDUCTOR LEAD IDENTIFICATION
lO.PRINTED WIRING BOARD ASSEMBLIES
11 .REPLACEMENT PARTS LIST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ..~.....
12.PACKING OF THE SET
13.AC ADAPTER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .......
SHARP CORPORATlON
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ..~.......................~.....................
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ..~......................................
. . . . . . . . ..~...............................................................................~...............
CONTENTS
. . . . . . . . . . . . . . . . . . . . . . ..‘....................................................... 9-l
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
This document has been published to be used for
after sales service only.
The contents are subject to change without notice.
Page
l-l
2-1
4-l
5-I
7-1
8-1
IO-I
II-I
12-1
13-1
VL-E760U
VL-E765U
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.
l 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 ISkohm, IO watt 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.
l UseaVTVMorVOMwith1000ohmpervolt,orhigher
sensitivity or measure the AC voltage drop across the
resisor (See Diagram).
l 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.
TO EXPOSED
METAL PARTS
\~~~~~r=
1. NOTES DE SERVICE IMPORTANTES
AVANT DE RENDRE LE MAGNETOSCOPE
Avant de rendre le magnetoscope a I’utilisateur, eff ectuer
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.
l Brancher le cordon 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_LF en serie avec des pieces du
coffret metallique exposees et une masse de terre
connue telle qu’un tuyau ou un conduit d’eau.
l 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).
l * Deposer la connexion de la resistance a toutes les
pieces metalliques exposees ayant un parcours de
retour au chassis (connexions d’antenne, coffret
metallique, t&es de vis, boutons et arbres decommande,
etc.) et mesurer lachutede tension CAentre la resistance.
lnverser lafiche CA (unefiche intermediaire non polarisee
doit etre utiliseea seulefin defaireces verifications.) 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 & son
utilisateur.
/
VTVM
oECHELLE CA 0 3
1.5KOHMS
low
\
I
11
VL-E760U
VL-E765U
WARNING :TO REDUCETHE RISK OF FIRE OR ELECTRIC SHOCK, DO NOT EXPOSE
THIS APPLIANCE TO WET LOCATIONS.
CAUTION
CAUTION: TO REDUCE THE RISK OF ELECTRIC
SHOCK. DO NOT REMOVE COVER. NO
USERSERVICEABLE PARTS INSIDE.
REFER SERVICING TO QUALIFIED SERVICE
PERSONNEL.
\
This symbol mark means following.
For continued protection against fire hazard, replace only with same type fuse.
(CP901; 2A 72V, CP902; 2A 72V)
Camcorder
only
A
CAUTION
This symbol mark means following.
For continued protection against fire hazard, replace only with same type fuse.
(Fl; 1.5A 25OV)
AC Adapter
only
T
/:A
/1.5A 25OV\
A
I
0
n
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.
ATTENTION: POUR REDUIRE LES RESQUES D’INCENbIE OU DE CHOC ELECTRICWE,
NE PAS EXPOSER CET APPAREIL A LA PLUIE OU A L’HUMIDITE.
_’
.
A
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.
I
0
n
ATTENTION
Ce symbole signifie que l’on devra utiliser un fusible de meme type (CP901;
2A 72V, CP902; 2A 72V) pour assurer la
securite.
Camcorder
seulement
n
A
I
0
A
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.
Ce symbole avertit l’utilisateur que des instructions importantes relatives a l’utilisation
et al’entretien se trouvent dans le manuel
accompagnant I’appareil.
ATTENTION
Ce symbole signifie que I’on devra uti- Adaptateur CA
liser un fusible de meme type (Fl; 1,5A,
25OV) pour assurer la securite.
l-2
seulement
/ 1,5A 250V \
T
A
VL-E760U
l/L-E765U
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-80008-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.
1-3
2. SPECIFICATIONS
Signal System: NTSC standard
Recording System: 2 rotary heads, helical scanning system
Cassette: 8 mm video tape, MP type
Recording/Playback Time: 120 minutes (P6-120)
Tape Speed: 14.345 mm/second
Pickup Device: l/4” (6.4mm, effective size: 4.5 mm) CCD image sensor (with approx.
Lens: 16 x power zoom lens (F1.4, f=4.0-64.0 mm) and full-range auto focus
Lens Filter Diameter: 46 mm
Monitor: ‘4” (10.1 cm) full-color LCD screen (TFT active matrix)
Microphone:
Color Temperature Compensation:
Minimum Illumination:
Video Output Level:
Audio Output Level:
Speaker Output:
Power Requirement:
Power Consumption:
Operating Temperature:
Operating Humidity:
Storage Temperature:
Dimensions (approx.):
Weight (approx.):
VL-E760U
VL-E765U
270,000 pixels including optical black)
Electret monaural microphone
Auto white balance
0.8 lux (5 lux measured by EIA standard) (with gain-up, F1.4)
1 .O Vp-p 75.ohm unbalanced
-8 dBs, impedance less than 2.2 kohms
200 mW
DC 3.6V
5.3W (during camera recording in full auto mode with zoom motor off,
Extend Zoom, DIS and Snapshot functions off, and backlight in normal
mode)
O°C to + 40°C (32°F to 104°F)
30% to 80%
-2OOC to +6O”C (-4°F to 140°F)
7 5/&’ (W) x 4 g&’ (H) x 3 7/8” (D)
[182 mm (W) x 109 mm (H) x 99 mm (D)]
1.57 Ibs (710g)
(without battery pack, lithium battery, video cassette, and lens cap)
AC Adapter/Battery Charger
UADP-0274TAZZ
Power Requirement: AC 1 lo-240 V, 50/60 Hz
DC Output: 4.5 V
Power Consumption: 16 W
Dimensions (approx.):
Weight (approx.): 0.65 Ibs (295 g)
Specifications are subject to change without notice.
2 31/3$ (W) x 2” (H) x 5 5/$ (D)
[75 mm (W) x 51 mm (H) x
135 mm (D)]
Dimensions (approx.):
Battery Pack BT-H22
DC Output:
Weight (approx.):
3.6V
2 Vi’ (w) x 31<’ (H) x 2 713$ (D)
[54mm(W)xl9mm(H)x
56 mm (D)]
0.30 Ibs (136 g)
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 (l-800-237-4277) or visit SHARP’s
web site (http://www.sharp-usacom)
VL-E760U
VL-E765U
3. PART NAMES AND FUNCTION
For details on the use of each control.
Microphone
When the
-
Loom lens _
cassette
.
compartment
I
Shoulder
door is open
Cassette compartmer\t
strap loop
Speaker
Cassette compartment door
Battery compartment door
m
Cassette compartment
door release
Memory backup
battery compartment
Battery compartment door release
I
Tripod socket
RECord START/STOP button
VL-E760U
VL-E765U
AUDIO/
Ren
LCD monitor
MODE DISPLAY button
Power Zoom Wide/Telephoto
control
VOLume control
r
mouluer
Hand strap
Power switch (CAMERA/VCR sel
switch)
.
gltal
.atior
ect
Picture Effect/Auto
Focus/Strobe button
(VL-E760U)
CAMERA mode
Digital Quick Zoom/ Forward Edit Search/
Reverse Edit Search/ Fade
Snapshot button
VCR mode
Note:
l The button functions listed above are those for normal recording and playback operations.
Rewind/Reverse
Search
Auto Focus/Strobe
button(VL-E765U)
button
Play/Tape Counter
buttcm
button
Fast Forward/
Forward Search button
Scene Menu/Backlight
Compensation/Gain-up
button
Quick Return/Still
Recording button
Still/Search/
Pause
Stup button
button
3-2
B/L-E760U
l/L-E765U
4. DISASSEMBLY OFTHE SET
4-l. Removal of the camera section
Note:
Before removing the cabinet, turn off the power supply, and ascertain that the battery has been removed.
1. Remove one screw ((d)XiPSF20P04000), one screw ((b)LX-HZ0018TAFF), two screws ((a)LX-HZOO18TAFN), and pull
out the camera front cabinet (1).
Pull
(1)
Camera front c
2. Remove the connector (1 PC.).
* Remove the Camera rear cabinet, after removing the
connector.
t frame C
Note:
When assembling the camera rear cabinet, lay the FPC
between the camera shield case and the tilt frame C, and
insert it into the connector.
3. Remove one screw ((b)LX=HZ0018TAFF), one screw ((d)XiPSF20PO4000) and two screws ((a)LX-HZ0018TAFN) and
pull out the camera rear cabinet (2) backwards.
Pull out
a
b
b
+ (a)
* (a)
(b)
(d)
Camera rear cabinet
4. Firstly, remove the CCD connector from the Camera PWB, then remove one screw ((c)LX=HZ0045TAFN), the reverse
side in this figure (Not remove the lens holder in this section).
C
( 1
CCD connector
I
41
5. Pulling the lens holder, and pull out the lens upwards. Then, remove the lens connector.
Pull out
Len
Lens connector
6. Remove one connector and two screws ((b)LX-HZ0018TAFF) and pull out the lens unit from the tilt frame C.
Pull out
m
VL-E760U
VL-E765U
Connector
Note:
Be careful so as not to damage the FPC since the camera
PWB unit is connected to the lens unit with the FPC
attached.
7. Remove the camera PWB unit and the lens unit together, opening two claws of the battery holder outward.
Claw
/
.W-
Cla
4-2
VL-E76OlJ
l/L-E765U
4-2. Disassembly of the VCR main body
1. Removal of the VCR lid shaft
(l)Remove one screw ((a)LX-HZ0018TAFN).
(2)Bring the jig (example: slotted precision screwdriver) into contact with the removal groove of the VCR lid shaft, and slide
the screwdriver with care to prevent injuring the VCR lid and frame V.
Detail of area A
(3)Pull out the VCR lid shaft head which projects beyond the surface of the VCR lid.
VCR lid
VCR lid shaft _ ___
2. Disassembly of the cabinet L
(l)Slide the “VCR lid knob” in the arrow direction, and slide the VCR lid in the arrow direction as far as the cabinet L
fastening screw is visible. (Left figure) Since the connector of the microphone is still connected, take care to prevent
excessively sliding the VCR lid.
VCR lid
- VCR lid knob
(2)Remove five screws ((b)LX-HZOO18TAFF).
43
I
VL-E760U
VL-E765U
(3)Turn the
tilt frame
(4)Remove one
that the screwdriver
C so
((i)XiPSN20P04000).
screw
can
be
inserted, and remove
easily
two
screws
i x
0
v
((i)XiPSN20P04000).
.(5)Remove the cabinet L to the midway, and disconnect the FPC connector.
3. Removal of the VCR
lid
(1)Disconnect the microphone connector.
Cabinet L
Microphone connector
Area B
(2)Remove the connector cable from the hole of the microphone wire spacer.
Microphone wire spacer
Detail of area B
I
crophone connector
Microphone connector
VL-E760U
VL-E765U
(3)Remove the microphone
wire spacer from the Frame V.
Microphone connector
(4)Pull out the microphone
wire cable
Frame V ’
care to prevent it from interfering with the mechanical
with
Microphone wire spacer
area
of
Detail
parts, and
remove
VCR lid.
Caution for installation of the VCR lid
When installing the VCR lid, move the VCR lid in the arrow direction, keeping the VCR lid parallel to the main
shown below.
_ _
B
the
bodv as
4. Removal of the tilt unit
(l)Remove three screws ((b)LX=HZ0018TAFF).
Remove one screw ((d)XiPSF20P04000).
Disconnect three connectors.
Remove the tilt unit from the cabinet of the main body.
Battery terminal u\nit
(b) /
,VCR lid
Tilt frame C
4-5
VL-E760U
VL-E765U
5. Disassembly of the LCD holder
(l)Remove two screws ((d)XiPSF20P04000),
(2)Remove the
release its
remote
engagement.)
control ray reception PWB
Remote
control
angle.
pull
out the
tripod
Tripod angle
from the LCD, (Distorting the claw (snap-fit type) of
Remote
reception
ray
LCD holder,
the
control ray reception section
(3)Remove two screws ((b)LX=HZ0018TAFF)
and two
connectors, and
remove the LCD unit (with inverter) from the main
body.
LCD
rerter transformer
(4)Disconnect the connector which connects the
Li/RC unit to the main PWB, and slide the Li/RC unit in the arrow direction
from the frame V.
Note:
When connecting the FPC, pass it through the inside of rib of frame V (to prevent the FPC from being jammed).
LVRC unit
Frame V rib
Connector
46
I
VL-E760U
VL-E765U
6. Removal of the cassette compartment lid
(l)Using the slotted precision screwdriver, push and turn the two claws (C and D) which fasten the cassette compartment
lid, and the cassette compartment lid will be removed from the hook area of the cassette component.
(2)Turning the cassette compartment lid in the arrow direction, lift it, and the claws A and B will be disengaged to remove
the cassette compartment lid.
Note:
Take care to prevent breaking the claws of the cassette compartment lid.
Note:
When fixing the cassette compartment lid, first engage the claws A and B, and then engage the claws C and D, verify that
the four claws (A, B, C and D) of the cassette compartment lid are securely engaged as shown in the view below.
Claw B
Claw D
View F
7. Disassembly of the frame V
, (l)Remove three screws ((c)LX-BZOlSlTAFD) and one connector, and remove the frame V from the main body.
Mechanism unit
47
Frame V
I
8. Disassembly of the LCD panel
I 1
I \
Claw (A)
Claw (A)
I- Reflection
\(1)
sheet
VL-E760U
VL-E765U
1.
Disengage two claws (A),
and remove the lamp inverterunit (1)from the LCD
holder (2).
2 *
Remove the sheets from
the LCD holder (2).
.
Pull the LCD glass retain-
3
ing (3).
4 .
Disengage the claw (B),
and slide the LCD panel
(4) in the (C) direction to
remove the LCD holder (2).
Note:
When handling the prism
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 reflectors of lamp. Therefore,
install them together with the
lamp ass’y.
,
(3)
Light guide plate
Diffusion sheet
- Diffusion sheet
Prism sheet
Claw (B) / Disengage the claw, and remove the LCD
I
I \,
panel.
48
I
VL-E760U
WL-E765U
4-3. REPLACEMENT OF CCD SENSOR
4-3-l. BEFORE REPLACEMENT
1) 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.
l Ground the soldering iron.
l Ground also the human body, using the wrist strap(through an 1 Mohm resistor).
l Until the CCDsensor is mounted on the PWB, fit it to the conductive,sponge, and short-circuit the foot lead.
2) 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.
3) When replacing the CCD sensor, use the antistaic grounded soldring iron, and perform quickly soldering.
Index Mark
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
4-3-2. REMOVAL OF CCD
1) Unsolder the CCD sensor leads from the sensor PWB.
2) Take out the sensor PWB.
3) Remove the two screws (6), and remove the sensor holder and CCD sensor.
1 7
1
0
h
14 8
LZ2413H5
YYWWXXX
4-3-3. MOUNTING OF CCD
1) Place the lens unit upright (since the CCD sensor mount ID faces upward, care must be taken so as not to damage the
front lens of unit), put the crystal filter first and then the dust protection rubber into the CCD holder of lens unit. Set the
crystal unit with its thin side toward the lens unit.
2) Place the CCD sensor so that the its No. 1 pin is at the right lower (Positioning hole to be at right), and put the CCD sensor
into the CCD holder. For smooth and tight fitting, press the right lower part of back of CCD sensor, and then press the
left upper part.
Note: Pay attention to the direction of CCD sensor.
3) Place the sensor holder so that its two round markings be visible, and fix the sensor holder with
HZ001 3TAFF).
4) Mount the sensor PWB so that the CCD sensor leads go thorough the PWB holes.
5) Solder the CCD sensor lead to the sensor PWB.
Note: Take care not to apply excessive heat.
Sensor Holder
CCD Sensor
I The mark mu
: this face.
I
_____--
st be on :
3
I
: The THIN SIDE :
: faces the lens
____________
:
Mark
I,__,,,,,,,,,,,,-
J
the two
I
I
I
I
I
I
screws
WLX-
VL-E760U
VL-E765U
4-4. INITIAL SETTING OF E*PROM IC
4-4-1. E*PROM data alterable ways
Set the switch of main body to CAM, and use the remote control (RRMCG0033TASA) for adjustment to turn on the
1)
adjustment mode.
VCR adjustment address setting.
2)
V ADJ
00
After an objective address was established, play key is pushed and set.
In addition, numerical change uses a “REW” or “FF” key.
VCR adjustment data setting.
3)
4)
5)
V ADJ
00 ##
After an objective data was established, “PLAY” key is pushed and set.
When data of other address are changed successively, push “STOP” key, and please repeat operation to 5) from 3).
When SW of the substance is turned into off, data are written to E*PROM from systematic microcomputer.
4-4-2. IC702 (E*PROM)
When the IC702 has been replaced, make the following settings and adjustments.
1. Remove the backup battery (CR2025)
2. Turn power switch to CAMERA
3. Setting up the V ADJ mode as fotlows.
* After press the CONTINUE key, press the VCR ADJ key on service remote control (RRMCG0033TASA).
“00” is blinking
Value of “##” differs by an address.
4. After setting the above data, clear the V ADJ mode and turn off the power by pull out the battery pack or DC cable.
Neglect about 30 seconds after turned of power, because data of address becomes effective after microcomputer is
reset.
Now the setting of data is completion.
Adjustments to follow
Make the system controller servo, VCR, and LCD adjustments according to their respective instructions.
414-3. CAMERA ADJUSTMENT
When the IC2 has been replaced, make the camera adjustment according to its instructions.
All the camera adjustment data are written in the E*PROM provided on the lens unit. Therefore, when the lens is replaced,
the camera must be adjusted again according to the camera adjusting procedure.
4-5. ADJUSTING THE Y/C, AUDIO AND LCD CIRCUITS ON MODELS WITHOUT A/V IN MODE
(AA/ IN MODE SET-UP PRODUCE)
1) Set the switch of main body to CAM, and use the remote control (RRMCG0033TASA) for adjustment to turn on the
adjustment mode.
2) Set up the adjustment address (example : EEmode adjustment address 14). Once this address has been set up, the AA/
IN mode (test mode) is automatically brought and the images appear on the LCD display.
3) Now make the adjustments referring to the instruotions in the manual.
4-l 0
VL-E760U
WL-E765U
5. MECHANISM ADJUSTMENT
5-I. Mechanism checking/adjusting jigs, tools and parts
5-1-1. Mechanism checking/adjusting jigs and tools
No.
1
2
Name
Cassette torque
meter for
PB
Cassette torque -
meter for VS-REW
3 Torque gauge
Part
JiG8T-012
JiG8T-032
JiGTG0045
No.
Code
Configuration
cv
cv . * ’
0
Q
Model, Uses Remarks
g.cm/25 g.cm)
(10
l
(50 g.cm/25 gem)
l
For measurement
l
8 Guide roller height
adjusting driver
Tu guide height
adjusting driver
9 Hex wrench(l.3mm)
JiGDRiVERHMX7U BU
SEQDRiVER-V712 BL
roller height
Si
Bit shape
(See the figure below)
TolerancefO. 1
/
w+
I+-A
25
02
8
se?
3
3
For loosening or
l
2
Edge
thickness 0.5
tightening of
Motor stator
51
I
VL-E760U
VL-E765U
No . Name
Alignment tape
10
Tension Band and
Plate Adjusting Jig
12
Others
(1) Slide clippers
(2) High-precision screwdrivers (Phillips head, slotted head)
(3) Radio pliers (with thin jaws)
(4) A pair of tweezers
Part No.
VR2ABOPS
JiGDRiVERMX7Us BN
Zode
BT
Configuration
u
I
TAPE CONTENTS
1 VIDEO IMAGE 1
MONOSCOPE L-CH
llmtisi 30MIN I
Model, Uses
AUDIO
Remarks
1 TIME 1
5-l-2. Parts for periodic inspection and maintenance.
. Name Configuration
No
.
011
1
1) COSMOHYDRO HVIOO
2 Cleaning paper
Part No.
+
JiGDUSPER AP
Code
I-
3 Superfine swab
4 Grease
Morycoat YM-103/X5-6020
5 Screw locking agent
(1401 B)
6 Cleaning liquid
(Industrial-use ethyl alcohol)
Model, Uses
l Cosmo Oil Co., Ltd.
l Dusper C (Sigma)
(Ozu Co., Ltd.)
l Commercially available
item
l Dow Coaning
l Three Bond
5-2
VL-E760U
VL-E765U
5-2. Items and timings of inspection
maintenance
and
The mechanism of VCR needs the
after the machine is repaired,
S-2-1.
Inspection and maintenance list
Checking/Maintenance
execute the following maintenance and checks regardless of how
point
Tape travelling route
Section)
to
(Refer
2
Drum (Refer to Section)
g
z
2
Video head
3
Fi?
3
Earth
brush
Timing belt
roller
Pinch
Capstan D.D. motor
F Relay Pulle shaft
Pulle gear shaft
3:
2
Drive gear shaft
$
cn
5
3
following periodic inspection
Usage time (hrs.)
and maintenance in order that it maintains its
Possible symptom
500 1,000 1,500 2,000 3,000 encountered
0 0 0
q
0
:f;;r;;;Eid
Screen shaking
0
0 III 0 Ll cl
0 00 0 [7() 00 *Improper
No color appears.
l
If significant brush
l
* * * * nobbing noise is
heard,
Tape does not run.
* - * *
q
0
0 00 0
l
Tape slackens.
l
Screen shakes.
l
replace.
- 0 - 0 0
Abnormal sound
A - A A
A - A A
l
S/N ratio
high quality.
long it has been used.
Remarks
Rollers
If abnormal rotation or
l
deflection (signifi-
is found, replace
cant)
roller.
the
Other than rollers’
@Clean the tape con-
Be sure
tatting
to use
cleaning
Replace if failure is
l
areas.
the specified
agent.
found.
Apply oil.
l
(Oil: COSMOHYDRO
HVI 00)
Note:
After oil is applied to
the drive gear shaft,
slightly wipe it off with
swab.
Also,
Loading motor
- *o - *o a
Abnormal sound
* * * * *
-II
% PBNS-REWtake-up torque - * - * *
g
2 PBA/S-REW back tension - * - * *
$ torque
(D
g Tu brake
* - * *
0 *
x HC (Head Cleaner)
Oil: COSMOHYDRO, HVl 00
Grease: MORYCOAT YM-103/X5-6020
0
0 0
0 : Replace.
q : Clean.
Screw locking agent: THERE BOND 1401 B
Cleaning liquid: Industrial-use ethyl alcohol
Replace if failure (ab-
Not ejectable
l
The specific mode can-
l
l
normal sound) is de-
not be set. tected.
If conformance to the
l
standard is not ensured, replace part.
A : Apply oil.
* : Check.
53
-
VL-E760U
VL-E765U
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.
Figure 1
5-4
VL-E760U
VL-E765U
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-
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 S/Tu 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
I
55
/
VL-E760U
VL-E765U
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 g.cm with ripples less than 4 g.cm
(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 g.cm with ripples of less than 2 gem
(Torque ripple must be within 8 & 2gcm)
(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
VL-E760U
VL-E765U
Note: .
*Tightening torque of screw (1) 70 mN*m
.To check the position, be sure to run the tape.
l If the cassette compartment assembly is removed, it makes the work easier. (Refer to Item 5-5-3.)
T
H
5-3-5. Checking the take-up torque for rewind playback (VS-REW)
(1) Remove the cassette compartment ass’y and set to the sensor OFF mode.
(2) Set the torque gauge (TG0045) on the S reel disk, and check in the rewind playback (VS-REW) that the torque at
the supply side is within the specified range.
Standard of take-up torque in rewind playback (SP mode)
31 + 5 gem with ripples less than 5 g.cm.
(If the torque ripples appear, read the center value of torque between the ripples.)
5-3-6. Checking the back tension torque for rewind playback (VS-REW)
(1) Set the torque cassette (8T-032) in position, and check in the rewind playback (VS-REW) mode that the torque at
the tape take-up side is within the specified range.
Standard of back tension torque in rewind playback (SP mode):
14 + 5 gem with ripples less than 5 g.cm
(If the torque ripples appear, read the center value of torque between the ripples.)
5-7
5-4. ADJUSTMENT OF MECHANISM TAPE TRAVEL SYSTEM
Sup tilted pole
I
Tu tilted pole A
Tu GR
VL-E760U
VL-E765U
Tu guide
Tape travel system (Figure 1)
5-4-l.
Preparation for adjustment
(1) Clean the tape running areas (guide poles, rollers, drum, Capstan shaft, Pinch roller) (Figure 1)
(2) Connect the oscilloscope to the following TPs.
RF output . ..TL3306
H-SW-P
. . . . ..TL405
GND . . . . . . . . . . . TL3318
(3) Playback the alignment tape (VR2ABOPS).
(4) Ascertain that each guide is free from remarkable curl.
(5) Ascertain that the RF waveform of inlet and outlet sides is flat on the oscilloscope (Figure 2, (a)). Unless the waveform
is flat, (Figure 2, (b), (c)), make an adjustment as follows.
5-4-2. Adjusting the Sup GR and Tu GR
(1) Turn the Sup and Tu guide rollers to get the flat waveform at the inlet and outlet sides.
Inlet side
+-+ (a) Normal
Outlet side
(c) Outlet side
waveform is disturbed.
Figure 2
S-8
VL-E760U
VL-E765U
S-4-3. Adjusting the Si roller height
After replacement of Si roller preset and adjust the Si roller height.
(1) Si roller height presetting
Adjust the height from the upper surface ofmechanism chassis to the upper surface of lower flange with the aid of jig.
Then lower it by 90’ (clockwise).
(2) Adjusting the Si roller
Playback the thin tape such as P6-120MP to set the V/SR mode.
Ascertain that the tape is not folded on the lower flange (2) of Si roller (1). (Figure 4)
If tape folding is found, turn the upper flange (3) of Si roller (1) with the driver (clockwise) to eliminate the folding.
Upper flange
Figure 3
Height adjusting jig
Master plane
Playback the alignment tape (VR2ABOPS).
Adjust the Sup GR and Tu GR by the procedure described in section 4-2 above.
After V/S F,R perform playback so as to ascertain that the waveform rises horizontally within 2 seconds.
Unless the normal waveform is obtained (Figure 5), turn counterclockwise the upper flange (3) of Si roller (l), and
repeat the step (5) above. Repeat the steps (5) and (6) until the normal waveform is obtained. At this time ascertain
that the inlet travel does not change in the normal playback state. If any change is found, adjust the Sup GR, and
redo the step (5).
Rise waveform
Playback
Upper flange (3)
Tape must be free from foldeng.
Si roller (1)
Figure 4
REV
kZ&
REV NG
Figure 5
5-4-4. Adjusting the Tu guide
After replacement of Tu guide preset and adjust the height.
(1) Tu guide height presetting
Adjust the height from the upper surface of mechanism chassis to the upper surface of lower flange with the aid of jig.
Upper flange
i-
/eight setting iig Master p,ane
(JiGMP-MX?U)
I
Lower flange
Figure 6
5-9
(2) Adjusting the Tu guide
,*
1 Playback the Tu guide adjustment cassette (or the No.7 guide adjustment cassette for E30).
2 Check that the tape runs at the same height near the capstan shaft in case of V/S F and V/S R.
3 If the tape running position in case of V/S R is higher than the tape running position in case of V/S F, turn clockwise
the Tu guide nat.
If the tape running position in case of V/S R is lower than the running position in case of V/S F, turn counterclockwise
the Tu guide nat.
Capstan shaft
Pinch r
‘II ’ //
Figure 7
5-4-5. Checking the V/S F and R waveforms
Playback alignment tape (VR2ABOPS), and set the V/S R mode. At this time ascertain that the waveform crest pitch
is kept constant for more than 5 seconds.
VL-E760U
VL-E765U
Set the V/S F mode. At this time ascertain that the waveform crest pitch is kept constant for more than 5 seconds.
Unless the constant pitch is obtained, execute the checks of Section 4-2, 3, and 4.
t”T”T”T”i
Figure 8
5-4-6. Checking after adjustment
(1) Envelope check
1 Playback the alignment tape (VR2ABOPS).
2 Ascertain that the envelope maximum to minimum ratio is 65% or more. (Figure 9)
3 Ascertain that the waveform does not change remarkably. (Figure 10)
_ EMIN
Figure 9
Erhx
EMIN
- > 65 (%)
EMAX
C’ll8A
Figure 10
5-10
VL-E760U
VL-E765U
(2) Rise check
1 Playback the alignment tape (VR2ABOPS).
2 Once eject the cassette, and then load it again.
3 Set the playback mode, and ascertain that the RF waveform rises horizontally within 2 seconds. At this time ascertain
that there is no tape slackness near the pinch roller.
4 After V/S F, R and FF/REW execute playback, and ascertain that the RF waveform rises horizontally within 2
seconds. At this time ascertain that there is no tape slackness near the pinch roller.
Tu
cl’
GR
Figure 11
(3) Checking the tape travel
1 When the thin tape such as P6-120MP is played back, ascertain that tape lift and tape curl of 0.3 mm or more do
not occur at the lower flange of Si roller, upper flange of Sup GR, upper flange of Tu GR, and upper/lower flange of
Tu guide.
2 In case of V/S F and R ascertain that no curl is found at each flange.
Tension pole
Tu GR
Sup tilted pole
4
Figure 12
5-4-7. Checking and adjusting the playback switching point
Refer to the description of playback switching point adjustment in section of VCR circuit adjustment.
5-l 1
5-5. Mechanism assembling and parts replacement (disassembling and assembling)
Below is given an explanation of assembling of mechanism and its parts replacement.
The removal of cabinet and Circuit Board is explained in the relevant service manual.
Notes
After removal of cut washers be sure to replace them with new ones.
Do not place the mechanism upside down on the table. Otherwise, the mechanism part may be deformed or
damaged, resulting in malfunction.
When assembling, take care so that screw, washer or other foreign substance do not enter. Otherwise mechanism
malfunction may occur.
Be sure to use the specified cleaning liquid, oil, grease and screw lock as listed below. Otherwise mechanism
malfunction may occur.
Oils: 1) Cosumo Oil Co., Ltd.
COSMOHYDRO HVI 00
Greases: Dow Coaning
MORYCOAT YM-103/X5-6020
VL-E760U
VL-E765U
Screw lock: THREE BOND
1401B
Cleaning liquid: Industrial-use ethyl alcohol
5-5-l. Mechanism modes
To actuate the mechanism, apply DC3 to 4V to the L motor ((2) in Figure 4). At this time the L motor connector must have
been disconnected in advance.
Below is given an explanation of the mechanism mode necessary for mechanism check, adjustment and replacement.
(1). -1 mode (See Figure 1)
In this mode, it is mechanically positioned to eject the cassette. It is the position where the EJECT lever is moved the
farthest in the direction A in the S/B mode. (In this mode, the cassette compartment assembly can not be locked.)
Slide
chassis
EJ mode
0
Figure 1
5-12
VL-E760U
VL-E765U
(2).-l mode (See Figure 2)
When the cassette is loaded, the mechanism is set to the S/B mode. In this mode the slide chassis is most far from the
drum. In this mode the Eject lever is in position shown in Figure 2 (in position where the cassette control ass’y can be
locked).
(3). 1 STOP 1 mode (See Figure 3)
EJECT
Lever
Slide
chassis,
S/B mode
I
Figure 2
In the STOP mode the S.
the S brake is in contact
T pole base is depressed in the STOP position (or
with the S reel disk.
S pole base
S re’el disk
\
S brake
pole_ base
T
Ret Lock position in CAMERA mode), and
STOP mode
Figure 3
(4). l=lrnode (See Figure 4)
In this mode, it is positioned for the replay, record and so on. It is the mechanical position
against the capstan shaft to make the pinch-pressing spring the most longest.
Pinch roller
Camtan
- --I- - ----
sQaft
where the pinch roller is
\
pressed
PB mode
I
Figure 4
5-13
,Pinch
Spring
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