SHARP VLAX1U Service Manual
SERVICE MANUAL
VL-AX1U
SERVICE MANUAL
S52J6VL-AX1U/
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............................................................................ 10
6. INSPECTION AND MAINTENANCE
ITEMS AND INTERVALS ................................................................................................................. 11
NTSC
MODEL VL-AX1U
7. MECHANICAL ADJUSTMENTS AND CHECKS.............................................................................. 12
8. TAPE RUNNING ADJUSTMENT ..................................................................................................... 15
9. MECHANICAL SECTION ASSEMBLY AND PARTS REPLACEMENT
(DISASSEMBLY AND REASSENBLY) ........................................................................................... 17
10.ADJUSTING THE ELECTRICAL CIRCUITS.................................................................................... 24
11.USEFUL TIPS................................................................................................................................... 45
12.SIGNAL FLOW DIAGRAMS ............................................................................................................. 46
13.BLOCK DIAGRAMS ......................................................................................................................... 49
14.SCHEMATIC DIAGRAMS ................................................................................................................ 56
15.SEMICONDUCTOR LEAD IDENTIFICATION ............................................................................... 110
16.PRINTED WIRING BOARD ASSEMBLIES.................................................................................... 112
17.REPLACEMENT PARTS LIST ....................................................................................................... 123
18.PACKING OF THE SET ................................................................................................................. 145
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-AX1U
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-AX1U
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.
VTVM
AC SCALE
1.5k ohms
10W
0.15 µF
TEST PROBE
TO EXPOSED
METAL PARTS
CONNECT TO
KNOWN EARTH
GROUND
1. NOTES DE SERVICE IMPORTANTES
AVANT DE RENDRE LE 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
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.
VTVM
ECHELLE CA
1.5KOHMS
10W
0.15 µF
SONDE D'ESSAI
VERS PIECES
METALLIQUES
EXPOSEES
CONNECTER A
UNE MASSE DE
TERRE CONNUE
2
WARNING :TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK, DO NO T EXPOSE
THIS APPLIANCE TO WET LOCA TIONS.
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; 1.25A 24V, CP2; 1.25A 24V, CP3;
1.25A 24V, CP4;1.25A 24V)
Camcorder
only
VL-AX1U
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;
1,25A 24V, CP2; 1,25A 24V, CP3; 1,25A
24V, CP4;1,25A 24V) pour assurer la
sécurité.
Camcorder
seulement
3
VL-AX1U
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 RBRC
States. The RBRC
voluntarily participating in an industry program to collect and recycle these batteries. The RBRC
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.
TM Seal on our battery pack contained in our product indicates that SHARP is
TM* Nickel-Cadmium Battery Recycling Program in the United
TM
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: 1/3.6" (effective size: 5.0 mm) CCD image sensor (with approx. 1,330,000
pixels including optical black)
Lens: 23x optical/500x digital power zoom lens (F1.8-3.5, f = 3.8 – 87.4 mm in
TAPE-CAMERA mode, f = 4.0 – 87.4 mm in CARD-CAMERA mode), fullrange auto focus
Lens Filter Diameter: 46 mm
Monitor: 3.0" (7.5 cm) full-colour LCD screen (TFT active matrix)
Microphone: Electret stereo microphone
Colour Temperature Compensation: Auto white balance with white balance lock and indoor, outdoor, manual ad-
justment feature
Minimum Illumination: 3 lux(with gain-up, F1.8)
Video Output Level: 1.0 Vp-p 75-ohm unbalanced
Audio Output Level: –8 dBs, impedance less than 2.2 kohms
Speaker Output: 300 mW
Still Image Compression System/
Recording Format: JPEG base line conformance/JPEG (Exif2.1)
Still Image Recording Medium: MultiMediaCard, SD Memory Card
Power Requirement: DC 7.4 V
Power Consumption: 4.3 W (during camera recording in TAPE-CAMERA mode using the viewfinder
in Full Auto mode with the DIS function on)
5.1 W (during camera recording in TAPE-CAMERA mode using the LCD monitor in Full Auto mode with the DIS function on 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 1/32" (W) × 3 3/8" (H) × 8 11/32" (D)
[77 mm (W) x 86 mm (H) x 212 mm (D)]
Weight (approx.): 1.45 lbs(655 g)
(without battery pack, lithium battery, video cassette, lens hood, hand strap
and SD card)
VL-AX1U
AC Adapter/Battery Charger
U ADP-0333TAZZ
Power Requirement: AC 110-220 V, 60 Hz
DC Output: 7.3 V, 1.4A
Power Consumption: 23 W
Dimensions (approx.): 3 5/32" (W) × 1 25/32" (H) × 3 7/8" (D)
[80 mm (W) × 45 mm (H) × 98 mm (D)]
Weight (approx.): 0.43 lbs (196 g)
MultiMediaCard (Supplied Accessory)
Memory Capacity: 8 MB
Power Requirement: 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.
5
VL-AX1U
3. PART NAMES
For details on the use of each control.
Front view
Shoe Cover/System Shoe
(to attach zoom microphone)
Built-In Stereo
Microphone
Zoom Lens
Focus Ring
Still Button
Right view
Media Switch
Zoom Lever
Still Button
Volume Adjustment Lever
Stand-by Button
Fade Button
Gamma/Backlight
Button
Focus Switch
Manual Switch
Wireless Remote Control
Sensor
Control Lever
Menu Button
Headphone Jack
DV Jack
(i.LINK)
DV
PC
Communication
Jack
Jack Cover
Left view
Battery Eject Lever
LCD Monitor
LCD Monitor
Unlock Button
Tape Operation
Control Button
Screen Switch
Button
Rewind/Forward
Button
MULTI
DISP. ON/OFF
DIS
Viewfinder
Diopter Scale
Adjustment Knob
Eyepiece Removal
Button
Power Switch
Record Start/
Stop Button
Battery/DC Cable
Compartment
Shoulder Strap Holder
Display On/Off Button
Recording Navigation
Button
Cassette Cover Open Lever
Cassette Cover
Cassette Slot
Cassette Slot
Mark
Speaker
Hand Strap
S-VIDEO
AV
Zoom Microphone Wind Screen
Microphone
Shoe
Shoe Fixer
Video/Audio Jack
S-video Jack
Button Type Battery
Compartment
Card Slot Cover
Card Slot
Tripod Fixing Hole
6
4. DISASSEMBLY OF THE SET
Note:
Before removing the cabinet, turn off the power supply, and ascertain that the battery have been removed.
VL-AX1U
1.
(R)
(O)
Fitting cover
Hot shoe FPC
(P)
Shoe fitting
(S)
(S)
DV·232C unit FPC
(P)
Top cover ass'y
Open the LCD
(P)
• Remove the 1 screw ((O)XiPSF17P03000). Lifting the fitting cover a little, pull it out in the direction of the arrow.
• Remove the 1 screw ((R)XiPSN17P03000), and pull out the shoe fitting in the direction of the arrow.
• Open the LCD, and remove the 3 screws ((P)XiPSF17P04000) and 2 screws ((S)XiPSN17P04000).
Pull out the top cover ass'y in the direction of the arrow to detach the DV•232C unit FPC and hot shoe FPC. (If the top cover
ass'y is pulled out by force, the FPC may be cut off. Therefore, pull it our gently.)
2.
Claw
Tilt FPC
(S)
Operation key unit FPC
(P)
(P)
(K)
Cabinet B ass'y
(O)
(O)
(O)
(O)
(O)
• Detach the operation key unit FPC and Tilt FPC.
• Remove the 1 screw ((S)XiPSN17P04000), 5 screws ((O)XiPSF17P03000), 1 screw ((K)LX-HZ0063TAFN), and 2 screws
((P)XiPSF17P04000).
• Raise the claw in the direction of the arrow, and pull out the cabinet B ass'y to detach the BtoB of the camera operation unit.
(If the cabinet B ass'y is pulled out by force, the FPC may be cut off. Therefore, pull it our gently.)
7
VL-AX1U
3.
• Detach the 3 main=sub FPCs (1, 2 and 3) and 1 microphone
connector.
• Remove the 1 screw ((R)XiPSN17P03000) and 2 screws
((N)XiPSF17P02000), and pull out the sub PWB in the direction of the arrow.
4.
• Detach the lens FPC, focus FPC, and camera=main FPC
BtoB.
• Remove the 1 screw ((R)XiPSN17P03000), raise the claw,
and then pull out the lens section in the direction of the arrow.
Microphone connector
(R)
Sub PWB
(N)
(N)
Main=Sub FPC
Focus FPC
Lens FPC
5.
• Detach the head amp=main FPC BtoB, battery terminal FPC
BtoB, AV/S terminal unit FPC, and power supply S/S unit FPC.
• Remove the 3 screws ((R)XiPSN17P03000).
• Pull out the main PWB in the direction of the arrow to detach
the VF FPC. (If the main PWB is pulled out by force, the FPC
may be cut off. Therefore, pull it our gently.)
Power supply S/S unit FPC
Head amp=Main FPC BtoB
VF FPC
AV/S terminal unit FPC
Claw
(R)
(R)
Camera=Main FPC BtoB
(R)
(R)
Main PWB
Battery terminal FPC BtoB
8
VL-AX1U
6.
• Remove the 1 screw ((Q)XiPSN17P02000) and 5 screws
((O)XiPSF17P03000), and pull out the VF unit in the direction of the arrow.
• Remove the 1 screw ((N)XiPSF17P02000) to detach the
battery cover.
7.
(C)
(B)
(B)
(B)
9.
(Q)
VF unit
(O)
(O)
(O)
(N)
Battery cover
Tilt cover
(F)
(F)
Head-amp=Main FPC
Mechanism
• Remove the 3 screws ((B)LX-BZ0232TAFD) and 1 screw
((C)LX-BZ0245TAFF).
• Open the cassette lid, and pull out the mechanism through the
opening in the direction of the arrow.
8.
Lens cabinet
(R)
(R)
*Hole direction caution
(K)
(O)
(K)
(O)
(O)
LCD cabinet
LCD tilt
(l)
• Remove the 1 screw ((I)LX-HZ0050TAFN), and pull out the
lens cabinet in the direction of the arrow.
• Remove the 2 screws ((K)LX-HZ0063TAFN) and 1 screw
((O)XiPSF17P03000) to detach the tilt cover.
• Remove the 2 screws ((F)LX-HZ0017TAFF) to detach the
LCD cabinet.
• Turn the LCD tilt to verticalize it to the LCD cabinet.
• Remove the 2 screws ((O)XiPSF17P03000) and 2 screws
((R)XiPSN17P03000).
9
VL-AX1U
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 torque
gauge listed left.
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 corning
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
10
VL-AX1U
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
11
A
Fig. 2
VL-AX1U
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 0.4mN·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 0.5mN·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
12
A
setting values
MIC contacts
Fig. 2
B
VL-AX1U
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
13
VL-AX1U
<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 +0.6/-0.3mN·m
Move the swing arm
toward the S reel
base side.
A
Fig. 7. Loading back tension measurement
method
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 shaft.
(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 shaft.
(4)Gradually return the pinch roller, and when the pinch roller contacts parallel
the capstan shaft, 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
14
8. TAPE RUNNING ADJUSTMENT
8-1. Adjustment locations
VL-AX1U
<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
counterclockwise to 315°.
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
15
VL-AX1U
8-4. Running rough adjustment
(With cassette controller)
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 counterclockwise 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. ADJUSTING THE ELECTRICAL CIRCUITS".)
16
VL-AX1U
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 counterclockwise 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 shaft, 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
17
VL-AX1U
(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 shaft, 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 reel base
S main brake
PLAYBACK mode diagram
(RECORD, FF, VSF)
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;
(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
(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
S pole base
T pole base
STOP mode diagram
or B direction.)
A
.
H
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 E: 40±4mN.m
Fig. 1.
Fig. 3.
Fig. 2.
Fig. 4.
Fig. 5.
Fig. 6.
18
VL-AX1U
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
cellophane tape or similar to turn on SW. (Take care that the
movable piece turns only in the shown arrow direction.)
Note: To enter REC mode, press the pin of the recognition switch
(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).
of the down SW with
L
Movable piece
.
M
of down SW.
Side view
Rotary direction of
movable
piece
9-4. Phase matching
Fig. 7. LOADING START mode
Referring to Figs. 8 and 9, align the phase for the following parts.
(1) Eject lever (2) Eject control lever (3) Mode SW (4) Main cam (5) Sub cam
Note: Before disassembly, sufficiently check the marker position.
Note: When installing the joining gears, verify that the phase matching 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
control lever
Eject lever
Phase matching hole
(for chassis)
Phase matching hole
(for gear)
Fig. 8
Mode switch
Phase matching
mark
Main cam
Phase matching hole
(for chassis)
19
Coupling
gear
Fig. 9
Sub cam
Phase matching hole
(for chassis)
VL-AX1U
9-5. Reassembly
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
Mode SW
463
Groove grease
303
Pinch drive lever
361
Main chassis Ass'y(Front surface)
301
LM/Mode FPC
465
4.
T arm control
lever stopper
363
E
E
H/A PWB angle
315
Center pulley
Ass'y
Drive belt
367
459
Intermediate gear angle
sub Ass'y
F
312
364
366
Intermediate pulley
Ass'y
Capstan FPC stopper
311
C
365
421
Intermediate gear
stopper
2.
3.
Groove grease
A-3
EJECT control lever
EJECT lever
T arm control lever
Loading lever
Groove grease
360
309
A-2
A-1
Main cam
302
306
Item
Tightening torque
A S Tight · M1.4 x L3 70mN·m3
Cam groove grease
304
Coupling
gear
370
AHC cam
369
Item
Shifter drive lever
B
305
371
Sub cam
Tightening torque
BCWø1.2-ø3.0-t0.25 1
Loading motor Ass'y
461
D
Loading motor
fitting Ass'y
Slide chassis
C
guide
Capstan motor
462
C
386
Quantity
Ass'y
Quantity
5.
6.
Phase match check
Sup pole base Ass'y
S loading arm
Ass'y
S pressure spring
Item
Tightening torque
C Special screw · 40mN·m1
M1.4 x L1.6
E S Tight · M1.4 x L4 70mN·m2
F S Tight · M1.4 x L2 70mN·m1
G
G
Phase match check
Guide rail sub Ass'y
(Rear surface)
Tightening torque
40mN·m2
G
Special head screw ·
Enter part of
convexity rear
surfacer
Guide rail sub Ass'y
Item
M1.4 x L1.5
Guide roller Ass'y
454
I
451
Tu pole base
452
Ass'y
I
307
Guide rail
H
395
362
Tu loading arm Ass'y
308
H
Quantity
Quantity
Item
Tightening torque
Quantity
C Special screw · 40mN·m2
M1.4 x L1.6
Special screw with step
D
· 70mN·m1
M1.4 x L6.25
20
372
S loading gear
Tu pressure spring
396
373
Tu loading gear
Item
Tightening torque
Quantity
HCWø0.7-ø2.2-t0.25 2
I Special screw · 5mN·m2
M1.2 x L1.8
(Tentative tightening)
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)
VL-AX1U
1.
S cassette stay
Note1)
Slide adjustment
angle
344
Grease
376
Sensor FPC cover
502
K
382
Tu pole
381
383
352
Tu guide
Ass'y
arm
393
Tu guide
arm SPR.
Tightening torque
397
Guide
adjustment
SPR.
H
Quantity
466
Damper
Spring
J
F
Grease
353
Brake shifter
Ass'y
331
Slide chassis Ass'y
Item
T roller upper
flange
T roller bottom
flange
F S Tight · M1.4 x L2 40mN·m1
HCWø0.7-ø2.2-t0.25 1
J Special screw · 40mN·m1
M1.2 x L1
Note 1: Use the No. 00 bit.
K
Special head screw ·
40mN·m1
M1.4 x L2
2.
T roller upper
382
flange
455
Tension arm Ass'y
3
54
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.
3
84
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
BCWø1.2-ø3.0-t0.25 1
F S Tight · M1.4 x L2 40mN·m1
HCWø0.7-ø2.2-t0.25 2
Special head screw ·
K
40mN·m1
M1.4 x L2
Special screw with step
L
· 40mN·m1
M1.4 x L1
Type 2 minuteness
M
40mN·m1
M1.4 x L1
NCWø0.7-ø1.8-t0.1 2
OWø1.2-ø2.5-t0.3 2
21
VL-AX1U
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 poll 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
A
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·m4
Quantity
M1.4 x L1.6
2.
FPC cover
377
P
3.
A
A
399
PB guide SPR.
453
Drum base Ass'y
Grease
(Front surface, rear surface,
groove side surface)
Drum fixing SPR
398
Drum installation screw
438
Tightening torque
50mN·m
Mechanism fixing angle
314
F-4
F-3
F-2
470
Drum Ass'y
Grease
(Rear surface,
groove side surface)
F-5
A
355
Reel cover Ass'y
Oil
Swing arm Ass'y
N
313
Item
A
Tightening torque
Quantity
A S Tight · M1.4 x L3 40mN·m1
NCWø0.7-ø1.8-t0.1 1
Type 1 minuteness
P
40mN·m1
M1.4 x L1
F-1
Item
Tightening torque
Quantity
A S Tight · M1.4 x L3 70mN·m3
F S Tight · M1.4 x L2 70mN·m5
4.
Q
Quantity
Q
Q
Item
Special screw ·
M1.4 x L2
500
Head amplifier PWB unit
501
H/A FPC shield plate
Q
Tightening torque
40mN·m3
22
VL-AX1U
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
Enabled after
assembling
Capstan FPC stopper
assembling
From rear
surface side
From rear
surface side
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 slide 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
23
Fig. 1
VL-AX1U
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).
VL-AX1U Specifications of service jigs
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 CPWBH2925TA01 Product unit use AR
3 MAIN PWB–SUB PWB SC5701, SC5702 39P QPWBH3224TAZZ Product unit use AE
4 MAIN PWB–SUB PWB SC5703 45P QPWBH3225TAZZ Product unit use AF
5 Power SW–MAIN PWB SC703 17P QSW-Z0370TAZZ Product unit use AR
6 V/F–MAIN PWB SC8801 21P DCOVA1793TAK1 Product unit use AS
7 DV/232C/ZOOM SW– SC5704 21P RUNTK0411TAZZ Product unit use AT
MAIN PWB
8 AVS/EJECT SW– SC1401 21P RUNTK0409TAZZ Product unit use AT
MAIN PWB
9 Hot shoe–SUB PWB SC6602 12P QPWBH3227TAZZ Product unit use AG
10 Battery Terminal– SC900 20B-B QTANZ0149TAZZ Product unit use AQ
MAIN PWB
11 VCR operation–SUB PWB SC3707 10P QSW-ZA002WJZZ Product unit use AV
12 Focus Ring Unit– SC701 10P RUNTK0410TAZZ Product unit use AQ
MAIN PWB
13 Camera Operation FPC– SC3702 30B-B N QCNW-2067TAZZ BS
SUB PWB
14 Camera Operation FPC– 30B-B QSW-Z0371TAZZ Product unit use AZ
Camera Operation Unit
15 CAMCCD PWB– SC1002 39P CPWBH3087TA01 Product unit use AL
CAMCCD FPC
16 CAMCCD FPC– SC201 40B-B C QCNW-2001TAZZ BY
MAIN PWB
17 LCD PWB–MAIN PWB SC2801 33P QSW-Z0372TAZZ Product unit use AT
18
TP Jig for Envelope confirmation
19 Built-in microphone– P6601 4P RMiCC0106TAZZ Product unit use AQ
SUB PWB
SC3703 14B-B N RUNTK0414TAZZ BA
No. of pins
New or
Continuation
Part cord
Price
code
24
VL-AX1U Service jig configuration
3
3
4
2
1
7
16
12
Hot Shoe
Sheet Key
QCNW-2067TAZZ
<Sub PWB>
45p
39p
39p
39p
39p
45p
BT
POW/SS
QCNW-1832TAZZ
H/A Unit RAMP-0035TAN0
Mechanism
DMECV0067GE71
DV/232C/
ZOOM
AVS/
EJECT
Lens
<Main PWB>
QCNW-2001TAZZ
RUNTK
0409
TAZZ
Lens
V/F
V/F
LCD
<LCD PWB>
BL
Panel
Panel
DMON-0011QA01
Product unit use
RUNTK0411TAZZ
Adjustment Connector
10
13
14
5
11
9
18
17
6
8
19
15
Product unit use
DCOVA1793TAK1
Product unit use
QSW-Z0372TAZZ
Product unit use
Product unit use
(Lens Ass'y)
Product unit use
CPWBH2925
TA01
to Mechanisim
Product unit use
RUNTK0410TAZZ
Product unit use
QPWBH3224
TAZZ
Product unit use
QPWBH3224
TAZZ
Product unit use
QTANZ0149TAZZ
Product unit use
CPWBH3087TA01
Product unit use
QPWBH3225TAZZ
Product unit use
QSW-Z0370TAZZ
Product unit use
QSW-ZA002WJZZ
Product unit use
QPWBH3227TAZZ
Product unit use
QSW-Z0371
TAZZ
Product unit use
RMiCC0106TAZZ
<Camera PWB>
RUNTK0414TAZZ
(TP Jig for Envelope confirmation)
Camera Operation
Microphone
Camera
Focus
VL-AX1U
25
VL-AX1U
[TEST POINT]
(Wiring board diagram: Main Side B)
TL8843(VB)
VF sub-brightness R/B
TL8841(VG)
VF COM-DC
VF brightness
VF contrast
VFγ1
VF sub-brightness R/B
TL8861(BLD)
VF VCO
TL8840
VF COM-DC
TL8842(VR)
VF sub-brightness R/B
TL2804(VGL)
COMMON PULSE
R3493R3492
IC3405
C3462
R3491
R3495
C450
R440
R441
IC405
R442
C452
R443
R446
C451
C407
R411
R406
Q1947
R1992
C404
R407
R412
C405
R416
TL3320
TL8855
TL8861
TL783
SC5704
TL5760
TL5758
TL8840TL8842TL8841TL8843
TL911
TL2811
TL2813
TL2814
TL2818
TL2819
SC2801
TL2825
TL1913
TL1909
TL2834
TL2803
COMMON PULSE
TL5769
TL5766
TL5762
TL5755
TL787
TL785
SC703
TL3332
SC3301
TL403
C508
TL416
TL417
TL4436
TL5768
TL5756
TL5761
TL5759
R2833
R2814
R2811
TL2812
C2808
R2825
R2823
TL2817
R2822
TL2816
TL2815
TL2820
TL2833
TL5763
TL5765
TL5757
TL3406
TL3403
TL3401
C1720
C1718
C1717
C1714
R1711
R1710
C1712
C1710
R1709
R1708
R1707
R798
R1704
C1708
R1726
R1717
R1701
R1721
R1720
TL3321
R2592
C2548
R2582
R2583 R2584
R2588 R2585
Q2510
R2832
C2805
R2812
C2807
D2801
R2815
TL2804
Q2800
R2813
R2810
TL2803
R2831
R2818
R2820
R2819
R2824
TL1908
TL1475
PCO D/A-Y
TL5754
TL5764
R5701
C1724
C1704
TL913
L1702
R1724
R1719
R1718
Q1701
R1723
IC503
R2589
R2594
C2542
R2581
R2617
R2605
C2551
R2616
R2615
C2552
R1470
FB1472
SC1401
TL1475TL1478 TL1481TL1479
R1948
R1713
C1728
TL5776
R2516
R2512
R2586
R2587
R2590
C2546
R2593
IC2507
R2610
R2606
R2604
R2623
R1471
R1476
R1950
R1716
C1725
R1714
IC1701
R1705
C1703
R1702
C1711
TL5772
C4701
IC4701
C4702
FL501
R520
R519
R516
R518
Q504
R517
R537
R2509
R2514
R2511
C2516
C2549
C2544
D2504
TL1480
TL1477
R1475
R1472
SC5701
C1721
R1949
R1715
C1726
C1727
C1723
R1706
C1709
C1702
C1701
R1703
C722
R749
L1701
C724
R754
TL5767
R514 C504 R531
C513
C515
C516
C514
C2515
C2512 R2507
R2515 R2508
IC2502
R2526
R2528
R2529
R2530 R2521
C2517 C2518
C2520 R2520
D2501 R2519 R2522
R1473
R1474
R1477
FB1471
TL1477
PCO D/A-C
0
TL789
TL788
TL3331TL3330TL3329
TL3322
TL5750
TL5753
TL5775
TL5777
TL5773
TL910
TL1914
C1719
C1722
TL1910
IC705
R1722
TL5784
TL5771
TL5785
R706
Q1940
R710
R708
R1712
R733
C1716
R740
C1715
R730
R776
C1713
C734 R770
R774
R781
R757
R713
R711
R716
R782
C1705
C1706
C1707
R719
Q702 Q701
C729
C728
R752
C723
IC706
R753
C726
C506
IC502
TL5770
C512
R535
C502
C511
R536
C503
IC501
TL5789
TL5790
TL5788
R521
R522
R523
TL5786
C2513
TL5752
Q2502
R2510
R2513
TL5778
Q2504
R2534
R2533
Q2507
Q2503
Q2508
C2511
R2527 R2525
L2502
R2537
Q2501
C2503
TL2801
TL2800
C2553
C2554
R2518
R2524
R2523
R2517
SC5702
TL5783
TL5751
TL3319
C934
C936
C721 R755
L903
TL5779
L902
TL5782
C733
C732
TL5774
C718 R744
IC704
C720 C730
R746
R748
R751 C737
C725 R758
R779 R750
R703 R718
C727 R756
C719 R704
X702
IC708
TL797
TL776
TL799
C702
Q703
IC701
C701
TL5780
TL4403
TL7801
IC2501
C2508
R2502
D1900
R780
R506
C230
FB201
TL4440
TL7800
R509
C507
R526
TL4404
R2503
C2501 C2510
R2505
C2507
R2504
TL5781
R505
R504
C509
R532
R533
TL4405
C2555
C2556
R2538
C2530
C2531
R2532
C2504
C2502
R2501
C2506
C2505
TL2802
SC2501
TL2801(G OUT)
DAC full-scale
TL2800(R OUT)
C935
L904
C716
C709
C712
L701
C202
C501
L501
R796
R2506
SC701
TL1904
TL1905
Q1908
R1925
R735
R729
C731
R736
R738
C735
R747
R723
TL420
TL418
TL412
TL5787
R734
R737
R769
R772
TL914
R761
R763
R764
C711
C706
Q1920
R1911
FB203
C224
R205
TL912
C222
C5702
C5704
C5703
C5701
C239
C210
C208
R235
C2509
R797
TL902
TL900
TL901
TL904
TL906
TL905
C1922
R1930
R1931
R1929
Q1911
R1927
Q1903
R1915
R741
R725
R739
Q1904
R724
R759
R720
R1921
R1920
R1918
R732
TL421
Q1946
TL1912
TL1911
Q705
R771
R1901
C704
R762
C713
R1913
Q1905
Q1921
R1912
C237
C231
C223
R209
L2501
R202
C204
R213
R201
TL1431
TL239TL245TL244TL243TL242TL241TL235TL240
SC900
R922
TL903
R925
R908
C1911
CP3
CP2
R1957
R1958 R1959
R1961
R1956
C930
C950
R1917
R1960 Q1909
R1919
FB900
L906
C1910
C901
C946
C1993
Q1941
L905
TL8858
Q1943
R1902
Q1942
C1906 R1905
C1994 C1995
R1934
C944
C949
R972
R979
R974
Q902
R973 C943
R1903
Q1945
C940
Q1906
R1914 R1904
R1937
TL1907
TL1906
R1936
Q1936
Q1938
R1935
IC202
TL7823
C226
C227 C228 C240 C235
IC201
R206
R204
R203
R207
R208
TL236
TL237
TL238
SC201
TL2802(B OUT)
DAC full-scale
R901
C900
R900
CP4
CP1
L990
C948
L908
C939
R1951
Q901
TL7800(AFC)
R980
R977
C945
C941 C942
R975 R971
Q1944
Q1914
R1943
R1940
C238
Q1913
VCO free-run
TL4405(B-Y OUT)
DAC_B-Y
IC901
R1942
R1941
R1945
R1944
C1921
TL7823(GND)
DAC_Y,
DAC_R-Y,
DAC_B-Y
TL4404(R-Y OUT)
C203
DAC_R-Y
FB204
TL908
TL4441
L204
C215
C213
C212
C211
C209
R251
R257
R255
TL234
TL4437
TL4438
TL4439
TL4403(Y OUT)
TL233
TL202
DAC_Y
R243
R242
C205
TL201
R258
R244
TL7801
VF VCO
TL1420
TL1420
PCO D/A-Y
PCO D/A-C
DAC full-scale
26
(Wiring board diagram: Sub Side A)
TL6606(INT MIC L)
EE level
Frequency character
VL-AX1U
TL2732
TL2731
TL2730
TL2728
TL3781
TL2724
TL2722
TL2720
TL2718
TL2712
TL2706
TL2704
X3750
TL3796
TL3793
TL3795
Q3709
R3719
Q3702
R3718
TL3780
Q3708
R3714
R3717 C3718
TL3712
C3715
R3780
TL3704
TL3729
R3775
TL3711
R3779
TL3709
R3762
R3715
C3701
TL3702
TL3710
TL3707
C3708
R3778
TL3708
R3777
TL3706
R3776
TL3705
L3701
FB3701
C3711
C3709
C3710
TL3727
TL3719
TL3713
TL3717
TL3721TL3718
TL3726TL3724
TL3714
TL2721
TL2726
TL2716
TL2719
TL2725
TL2715
TL2717
TL2711
TL2710
TL2714
TL2709
TL2708
TL3750
D3751
TL2751
TL2707
TL2702
R3753
TL2750
C3752
R3752
IC3750
C3753
R3751
TL3794
C3751
TL3797
TL3799
TL2713
TL3792
R3781
TL3777TL3776
FL3701
Q3703
TL3775
R3713
C3707
C3706
R3716
R3712
IC3701
TL2701TL3798
TL2705
TL2703
C3705
IC3702
TL3725TL3722
TL3720
TL6607(INT MIC R)
EE level
Frequency character
TL2723
C3750
TL3766
TL2727
D3750
TL2729
R3750
TL2739
TL2740
TL2741
TL3784
TL3786
TL3778
TL3783
TL3782
TL3785
Q3707
C3714
TL3791
TL3779
TL3789
TL3790
R3710
C3704
TL3716
TL3715
0
TL3756
TL3760
TL3769
TL3787
TL3758
TL3764
TL3757
TL3762
TL3759
TL3773
TL3771
TL3768
TL3767
TL3788
TL3772
R3769
R3765
R3771
TL3754
C3755
R3770
TL3755
Q3701
C3754
R3735
R3772
R3711
R3784
TL3801
TL2761
TL3728
TL3723
R3818
R3812
TL3765
C3702
R3773
R3733
R3721
R3732
R3734
R3731
R3720
R3800
TL3800
R3783
Q3706
R3737
R3730
C3712
TL3703
R3705
R3774
TL3770
R3729
R3728
R3727
R3726
R3725
Q3705
R3724
R3723
R3722
Q3704
R3797
R3786
R3796
R3799 R3787
R3795
R3798
R3794
R3793
R3792
R3791
C3703
TL3701
R3790
TL2760
R3808
R3809
R3810
IC6602
R3803
R6645 C6642
R3804
Q6606
C6652
R6644
C6653
R3813
R3814
R3817
R3819
R6642
R3815
R3816
Q6603
C6651
R3811
R3801
R6643
R6625
R6626
R6627
C6603
TL6605
TL6606
C6608
Q6602
TL6607
R6612
C6650
TL3752
TL3742TL3739
TL3743
L603
C635
TL3749
TL3738
TL3751
R689
R687
R663
R685
Q608
C685
TL3753
TL3744
L601
TL3761
TL3763
C640
C639
R654
R670
C633
C632
R3788
R3789
C3717
C6657
C6654
R6616
R6611
C6611
R686
R688
TL3774
Q606
C642
R638
TL3746
Q609
R6660
C6655
R6658
C6612
R6619
R6618
C6613
R6617
R6615
C6605
R6603
C6607
C6602
R6624 R6604
C686
C690
R656
R651
C651
TL3748
C646
C637
R641
C638
R640
R639
IC601
R658 C605
C645
R635
C629
C624
C631
R657
R632
C628
C623
R630
C621
R626
R628
R631
R621
R648
R649
D6601
R6657
R6659
C6616
C6615
R6621
C6619
C6618
C6614
R676
R624
R633
C641
C644
C661
C626
R634
R653
C647
C625
R6656
C6643
C6656
L6601
R6646
C6648
Q6608
R6648
R6647
R6623
R6649
R6650
C6617
R6651
R6622
C6620
R6620
IC6601
C6610
C6604
C6621
R6628
C6622
R6664
R6629
TL3747
TL3745
TL602
R610
TL3737
Q602
TL3730
TL605
Q601
R603 R609
TL3733
TL3731
TL3735
TL604
TL3732
TL3734
TL3736
R655
R662
TL3741
TL3740
Q604
R661
C611
C610
C608
C607
C606
C617
R652
C619
R667
R623
R673
R625
C618
C648
R668
C622
R627
R647
R6607
C6606
R6606
Q6609
FB6601
C6601
R6653
C6646
C6644
C6645
C6647
R6640
C6641
R6652
C6624
C6628
R6630
R6665
R6666
C6630
TL605
EE level
Frequency character
Super-directional microphone
C603
C616
TL604
EE level
Frequency character
Q605
Super-directional microphone
R660
R614
R616
R613
R6671
R6672
FB6602
C6684
R6641
C6637
R6639
C6640
C6639
C6638
R6638
R6636
C6636
C6634
C6635
R6635
R6634
C6633
R6633
C6631
C6632
R6632
C6659 R6637
C6629
R6663
C6660 R6662
C6658 R6661
C6626
Q6607
C6623
(Wiring board diagram: Sub Side B)
TL6609(GND)
EE level
Frequency character
Super-directional microphone
TL6608(TELE-MIC)
Super-directional microphone
TL6610(OPEN)
EE level
Frequency character
Super-directional microphone
SC3706
SC3705SC3704
R3802
R3805
R3806
R3807
SC3701
TL2755
TL2754
SC3707
TL2752
TL2759
TL2733
TL6609
TL2753
TL2756TL2757
TL2758
TL6601
1
SC6602
SC3703
TL6611
TL6608
TL6610
BAT3750
SC3702
SW3702
P6601
27
VL-AX1U
[Making adjustments]
Adjusting the servo system controller and related parts
1. Setting the system codes
Replacement of IC705 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 1C E3 00 FF 00 FF 02 FD
When replacing the IC705 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.
• Manual adjustment
Mode VCR ADJ mode
Procedure 1) Set the CAM/OFF/VCR selection switch to VCR.
Examples • During E
1. Model code 2. Destination code 3. Specifications code 4. Menu selection code 5. Software switching code 6. Calendar switching
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
PROM (IC705) 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 E2PROM 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. (By the remote control)
4) Observing the power voltage from TL900(-), set it so that TL904(+) obtains 6.00V ± 50mV.
5) Press the playback key on the main unit. Turn off the power and the adjustment is completed.
Examples • During microcomputer (IC704) or E
2
PROM (IC705) replacement.
28
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.)
2
PROM replacement. • During circuit board (Main) replacement.
VL-AX1U
The built-in VI/O
colour bar is recorded.
VS REW
PB
Phase and
equalizer are
adjusted
automatically.
OK:
Blue LCD comes on.
Judgment
NG:
Red LCD comes on.
Tape is EJECT.
3) A power source is put again after a power source is cut once.
4) Error rate check
Select and fix the TEST MODE 0B on the adjustment remote control.
5) 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.
Error rate
Synchronization error 20 or less
Error rate 200 or less (SP Mode)
330 or less (LP Mode)
Phase Equalizer
H ch side 2B 27
L ch side 26 25
Synchronization error
H
L
Examples • During mechanism replacement. • During circuit board (Main) replacement. • During E2PROM replacement.
29
VL-AX1U
;
;
;
;
y
y
y
y
TL783
7
TL5756
5
R2589
5
5
C
R
R
B
ADJUSTING THE VIDEO I/O CIRCUIT SYSTEM
(Wiring board diagram: Main Side B)
TL5760
TL5758
TL8840TL8842TL8841TL8843
TL911
TL2811
TL2813
TL2814
TL2818
TL2819
TL2825
TL1913
TL1909
TL2834
SC5
TL2812
TL2817
TL2816
TL2820
SC2801
TL2833
TL5761
R2583 R25R2588 R2
R2582
TL5759
Q2510
R2832
C2805
R2812
C2807
D2801
R2833
R2815
TL2804
R2814
Q2800
R2811
R2813
R2810
C2808
TL2803
R2825
R2831
R2823
R2818
R2822
R2820
TL2815
R2819
R2824
TL1908
TL1475
PCO D/A-Y
R2592
C2548
R2594
R2581
R2605
C2551
R2615
C2552
R1470
R2
R25C2
R2590
C2544
C2546
C2542
R2593
IC2507
R2610
R2617
R2606
R2604
R2616
D2504
R2623
TL1480
TL1477
R1471
R1476
R1472
FB1472
SC1401
TL1475TL1478 TL1481TL1479
IC2502
R2529
R2528
R2526
R2530 R2521
C2520 R2520
C2517 C2518
D2501 R2519 R2522
R1477
R1473
R1475
R1474
FB1471
TL1477
PCO D/A-C
TL5789
R2527 R2525
Q2501
TL5790
C2513
R2534
Q2508
R2517
TL5788
TL5786
R2513
R2510
Q2507
R2537
R2523
R521
R522
Q2502
Q2504
R2533
Q2503
C2511
L2502
TL2800
C2553
C2554
R2518
R2524
SC2501
TL5752
TL5778
TL4403
TL4405
R523
TL7801
C2555
C2556
R2538
C2530
C2531
R2532
IC2501
C2504
C2502
C2508
R2502
R2501
C2506
C2505
C2503
TL2802
TL2801
L501
TL4404
R2503
R2505
C2507
R2504
C2501 C2510
TL912
R796
R2506
SC701
C224
R205
C222
C5702
C5704
C5703
C5701
C239
C210
C208
R235
L2501
C2509
R797
C204
IC201
R203
R207
R208
R202
TL238
R213
R201
TL239TL245TL244TL243TL242TL241TL235TL240
TL1431
R204
TL237
SC201
TL1420
PCO D/A-Y
PCO D/A-C
1. PCO D/A-Y adjustment
Test point TL1475 (connected to oscilloscope) Address VCR ADJ 22
Mode EE mode
Procedure 1) Connect TL1420 to GND.
2) Connect the AVS cable and then connect it to the monitor (TO).
3) Call the adjustment mode (V-ADJ).
4) Set the address to "22", and call the date.
(100% white signal is output.)
5) Vary the date with the FF and REW keys to set the signal appearing at TL1475 to 1.0Vp-p ± 0.05Vp-p.
Examples • During E
2
PROM replacement. • During IC4401 replacement. • During IC1401 replacement.
F
TL908
TL4441
L204
C215
C213
C212
C211
C209
R251
R257
R255
TL234
TL4437
TL4438
TL4439
TL233
TL202
R243
R242
C205
R206
TL201
R258
TL236
R244
TL1420
1.0±0.05
2. PCO D/A-C adjustment
Test point TL1477 Address VCR ADJ 23
Mode EE mode
Procedure 1) Connect TL1420 to GND.
2) Connect the AVS cable and then connect it to the monitor (TO).
3) Call the adjustment mode (V-ADJ).
4) Set the address to "23", and call the data.
5) Vary the data with the FF and REW keys to set the signal appearing at TL1477 to 0.62Vp-p ± 0.05Vp-p.
Examples • During E2PROM replacement. • During IC4401 replacement. • During IC1401 replacement.
;;;;
yyyy
;;;;
yyyy
;;;;
yyyy
;;;;
yyyy
0.62 0.05
30
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