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
Page 2
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
Page 3
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
Page 4
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
Page 5
2. SPECIFICATIONS
Signal System: NTSC standard
Recording System: 2 rotary heads, helical scanning system
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
Page 8
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
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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
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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
Page 11
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
[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
Page 12
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.)
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
Page 13
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
Page 14
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
Page 15
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
· 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°.
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
Page 16
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
Page 17
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
Page 18
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
Page 19
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)
Page 20
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
AS Tight · M1.4 x L370mN·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-t0.251
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
CSpecial screw ·40mN·m1
M1.4 x L1.6
ES Tight · M1.4 x L470mN·m2
FS Tight · M1.4 x L270mN·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
CSpecial 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-t0.252
ISpecial screw ·5mN·m2
M1.2 x L1.8
(Tentative tightening)
Page 21
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
FS Tight · M1.4 x L240mN·m1
HCWø0.7-ø2.2-t0.251
JSpecial 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-t0.251
FS Tight · M1.4 x L240mN·m1
HCWø0.7-ø2.2-t0.252
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-t0.12
OWø1.2-ø2.5-t0.32
21
Page 22
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
AS Tight · M1.4 x L340mN·m1
NCWø0.7-ø1.8-t0.11
Type 1 minuteness
P
40mN·m1
M1.4 x L1
F-1
Item
Tightening torque
Quantity
AS Tight · M1.4 x L370mN·m3
FS Tight · M1.4 x L270mN·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
Page 23
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
Page 24
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 sectionConnector REF. No.
1H/A PWB–H/A FPCP30680B-BCQCNW-1832TAZZBV
2H/A FPC–MAINSC330180B-BCPWBH2925TA01 Product unit useAR
3MAIN PWB–SUB PWBSC5701, SC570239PQPWBH3224TAZZ Product unit useAE
4MAIN PWB–SUB PWBSC570345PQPWBH3225TAZZ Product unit useAF
5Power SW–MAIN PWBSC70317PQSW-Z0370TAZZ Product unit useAR
6V/F–MAIN PWBSC880121PDCOVA1793TAK1 Product unit useAS
7DV/232C/ZOOM SW–SC570421PRUNTK0411TAZZ Product unit useAT
MAIN PWB
8AVS/EJECT SW–SC140121PRUNTK0409TAZZ Product unit useAT
MAIN PWB
9Hot shoe–SUB PWBSC660212PQPWBH3227TAZZ Product unit useAG
10 Battery Terminal–SC90020B-BQTANZ0149TAZZ Product unit useAQ
MAIN PWB
11 VCR operation–SUB PWB SC370710PQSW-ZA002WJZZ Product unit useAV
12 Focus Ring Unit–SC70110PRUNTK0410TAZZ Product unit useAQ
MAIN PWB
13 Camera Operation FPC–SC370230B-BNQCNW-2067TAZZBS
SUB PWB
14 Camera Operation FPC–30B-BQSW-Z0371TAZZ Product unit useAZ
Camera Operation Unit
15 CAMCCD PWB–SC100239PCPWBH3087TA01 Product unit useAL
When replacing the IC705 E2PROM, first make the following settings and then start the adjustments.
(1) Electromagnetic conversion
Address 27282B *105 2526
Data409090804090
* The address uses only when replacing the IC302.
• Manual adjustment
ModeVCR ADJ mode
Procedure1) 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
ModeVCR ADJ mode
Procedure1) 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
ModeVCR ADJ mode
Procedure1) 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
Page 29
ADJUSTING THE ELECTROMAGNETIC CONVERSION CIRCUIT SYSTEM
1. PLL VCO adjustment
ModeVCR ADJ mode
Procedure1) 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)
ModeVCR ADJ mode
Procedure1) 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.
* 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 rate200 or less (SP Mode)
330 or less (LP Mode)
Phase Equalizer
H ch side2B27
L ch side2625
Synchronization error
H
L
Examples• During mechanism replacement. • During circuit board (Main) replacement. • During E2PROM replacement.
29
Page 30
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 pointTL1475 (connected to oscilloscope)Address VCR ADJ 22
ModeEE mode
Procedure1) 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 pointTL1477Address VCR ADJ 23
ModeEE mode
Procedure1) 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
Page 31
ADJUSTING THE LCD CIRCUIT
F
* To make this adjustment, set the backlight switch to the "NORMAL" position.
(Wiring board diagram: Main Side B)
TL4440
TL7800
R509
C507
R526
TL4403
TL4404
TL4405
R2503
TL7801
C2530
C2531
C2501 C2510
R2505
IC2501
C2507
R2504
C2508
R2502
R2501
TL2801(G OUT)
DAC full-scale
C202
C501
L501
R796
R2506
SC701
FB203
C224
R205
TL912
C222
C5702
C5704
C5703
C5701
C239
C210
C208
R235
L2501
C2509
R797
TL7823
C231
C223
R209
R202
C204
R213
R201
TL1431
TL239TL245TL244TL243TL242TL241TL235TL240
C226
C227 C228 C240 C235
IC201
R204
R203
R207
R208
TL237
TL238
SC201
TL2802(B OUT)
DAC full-scale
R242
C205
R206
R258
TL236
Adjustment procedure and connecting same as the VCR section.
TL8855
TL8861
TL5760
TL5758
TL783
TL911
TL2811
TL2813
TL2814
TL2818
TL2819
TL2825
TL1913
TL1909
TL2834
R407
R412
C405
R416
TL8840TL8842TL8841TL8843
C404
TL3322
TL3320
SC5704
SC2801
TL2833
TL2812
TL2817
TL2816
TL2820
TL403
C508
TL416
TL417
IC503
TL4436
TL5768
TL5756
R2589
R2592
C2548
TL5761
R2582
R2583 R2584
R2588 R2585
R2594
TL5759
R2814
R2811
C2542
Q2510
R2581
R2832
C2805
R2812
C2807
D2801
R2833
R2815
TL2804
Q2800
R2813
R2617
R2605
R2810
C2808
C2551
TL2803
R2825
R2616
R2831
R2823
R2615
C2552
R2818
R2822
R2820
TL2815
R2819
R1470
FB1472
R2824
TL1908
TL5776
R2516
R2512
R2586
R2587
R2590
C2546
R2593
IC2507
R2610
R2606
R2604
R2623
R1471
R1476
TL1480
TL1477
R514 C504
C513
R519
R520
C515
R516
C516
R518
Q504
C514
R517
R537
R2509
R2514
R2511
C2516
C2515
C2512 R2507
R2515 R2508
C2549
C2544
IC2502
R2529
R2528
R2526
C2520 R2520
C2517 C2518
D2504
D2501 R2519 R2522
R1472
R1474
R1477
R1473
R1475
FB1471
SC1401
TL1475TL1478 TL1481TL1479
IC501
TL5789
TL5790
TL5788
R521
R522
R523
TL5786
C2555
C2556
C2513
R2513
R2534
Q2507
Q2508
R2530 R2521
R2527 R2525
R2537
Q2501
R2523
R2517
R2538
TL5752
Q2502
R2510
TL5778
Q2504
R2533
R2532
Q2503
C2511
L2502
C2504
C2502
C2506
C2505
C2503
TL2802
TL2801
TL2800
C2553
C2554
R2518
R2524
SC2501
TL2804(VGL)
COMMON PULSE
TL2803
COMMON PULSE
TL2800(R OUT)
DAC full-scale
1. VCO free-run adjustment
Test pointTL7800(AFC)Address VCR ADJ 32
ModeVCR AV input
Procedure1) Input the white 100% signal to AV input.
2) Connect the digital voltmeter to TL7800, and adjust DC voltage value to the specified adjustment value with
VCR ADJ 32.
Adjustment2.00 ± 0.1V
rating
Examples• During E
• During DAC (IC4701) replacement.
2
PROM (IC705) replacement. • During VIO ENG (IC4401) replacement.
VL-AX1U
C203
FB204
TL908
TL4441
L204
C215
C213
C212
C211
C209
R251
R257
R255
TL234
TL7800(AFC)
TL4437
TL4438
TL4439
VCO free-run
TL233
TL202
R243
TL201
R244
TL1420
2. DAC full-scale adjustment
Test pointTL2800(R OUT), TL2801(G OUT), TL2802(B OUT)
AddressVCR ADJ 3D(R), VCR ADJ 3E(G), VCR ADJ 3F(B)
ModeVCR AV input
Procedure1) Set the VCR ADJ 83/93/C0 to 00/77/00. (At this time, LCD can not be displayed.)
2) With the VCR ADJ 3D, adjust the output voltage of TL2800 and the DC voltage value of the digital voltmeter to
the specified adjustment values.
3) Similarly with the VCR ADJ 3E/3F, adjust the output voltage of TL2801/2802 and the DC voltage value of the
digital voltmeter to the specified adjustment values. (Same as Item (2))
4) Return the VCR ADJ 83/93/C0 to the initial value. (Initial value: C5/7F/28)
Adjustment0.78V ± 10mV
rating
Examples• During E2PROM (IC705) replacement. • During VIO ENG (IC4401) replacement.
• During DAC (IC4701) replacement.
3. COMMON PULSE adjustment
Test pointTL2804(VGL)AddressVCR ADJ 29(C)
ModeVCR AV input
Procedure1) Connect TL2803 to GND.
2) Set the VCR ADJ 93 to A0.
3) With VCR ADJ 29, adjust the output voltage of TL2804 and the DC voltage value of the digital voltmeter to the
specified adjustment values.
4) Return the VCR ADJ 93 to the initial value. (Initial value: 7F)
Adjustment6.95V ± 50mV
rating
Examples• During E2PROM (IC705) replacement. • During DAC (IC4701) replacement.
31
Page 32
VL-AX1U
Q2501
3
80
R
C237
1
9
4. COM-Bias adjustment
Test pointLCD panel display areaAddressVCR ADJ 33
ModeVCR AV input
Procedure1) Input white 40% signal into the AV input.
2) Set the illuminometer (TOPCON IM-3) on the LCD panel surface. (Shut off the external light.)
3) Minimize the ripple of output waveform of illuminometer.
AdjustmentMinimum
rating
Response time : 0.6 sec.
RemarkMake this adjustment after 5-minute or longer aging.
Examples• During LCD panel replacement. • During IC705, IC4401, IC4701 replacement.
5. White Balance adjustment
Test pointLCD panel daisplay areaAddressVCR ADJ 84(R), VCR ADJ 86(B)
ModeVCR AV input
Procedure1) Input white 40% signal into the AV input.
2) Input white 40% signal into the standard monitor, and adjust it until it becomes the same as that screen.
AdjustmentStandard monitor
rating
RemarkMake this adjustment after 5-minute or longer aging.
Examples• During LCD panel replacement. • During IC705, IC4401, IC4701 replacement.
Examples• During IC705, IC4401, IC4701 replacement.
2) With VCR ADJ FA, adjust the output voltage of TL4403 and the DC voltage value of the digital voltmeter to the
specified adjustment values.
3) Similarly with VCR ADJ FB/FC, adjust the output voltage of TL4404/TL4405 and the DC voltage value of the
digital voltmeter to the specified adjustment values. (Same as Item (2))
4) Return VCR ADJ 303/304/432/423/424/425/426 to the initial value. (Initial value: FF/FF/43/10/29/6E/F0)
Note:When it is changed to the initial value FF/FF/43/10/29/6E/F0, OSD display goes out together with LCD/VF.
Checking the monitor output, adjust it. After adjustment, be sure to return to FF.
Test pointTL8861(BLD)AddressVCR ADJ E1
ModeVCR AV input
Procedure1) Connect TL7801 to GND. (No signal)
2) Connect TL8861 to the frequency counter, and adjust the frequency to the specified adjustment value with the
VCR ADJ E1.
Adjustment15.734 ± 0.1KHz
rating
Examples• During IC705 or IC8800 replacement.
Q1938
C227 C228 C240 C235
R206
R204
R203
TL236
TL237
TL238
SC201
R1940
C1921
C238
Q1913
TL7801
C203
VF VCO
FB204
TL908
TL4441
L204
C215
C213
C212
C211
C209
R251
R257
R255
TL234
TL4437
TL4438
TL4439
TL233
TL202
R243
R242
C205
TL201
R258
R244
TL1420
8. VF COM-DC adjustment
Test pointTL8840AddressVCR ADJ F6
ModeVCR AV input
Procedure1) Input the signal of a 3-step waveform.
2) Read the DC voltage value of the output of TL8841 with the digital voltmeter. (VG
3) Similarly rad the DC voltage value of the output of TL8840 with the digital voltmeter. (VCOM
4) Adjust the value of (VCOMDC - VGDC) to the specified adjustment value.
Adjustment -0.15 ± 0.1V
rating
Examples• During IC705 or IC8800 replacement.
9. VF brightness adjustment
Test pointTL8841(VG)AddressVCR ADJ E0
ModeVCR AV input
Procedure1) Input the signal of a 3-step waveform.
2) Set VCR ADJ ED to 00.
3) Adjust the waveform pedestal range of TL8841 to the specified adjustment value.
4) Return VCR ADJ ED to the initial value. (Initial value: 7A)
Adjustment7.4Vp-p ± 0.1Vp-p
rating
Sig. center
7.4Vp-p 0.1Vp-p
)
DC
)
DC
GND
Examples• During IC705 or IC8800 replacement.
33
Page 34
VL-AX1U
10. VF contrast adjustment
Test pointTL8841(VG)AddressVCR ADJ E5
ModeVCR AV input
Procedure1) Input the signal of a 3-step waveform.
2) Set VCR ADJ EB/ED to FF/00.
3) Adjust the pedestal 100% range of the waveform of TL8841 to the specified adjustment value.
4) Return VCR ADJ ED to the initial value. (Initial value: 7A)
Adjustment2.0Vp-p ± 0.1Vp-p
rating
GND
2.0Vp-p 0.1Vp-p
Examples• During IC705 or IC8800 replacement.
11. VFγ1 adjustment
Test pointTL8841(VG)AddressVCR ADJ EB
ModeVCR AV input
Procedure1) Input the signal of a 3-step waveform.
2) Set VCR ADJ ED to 00.
3) Adjust the white 100% range of the waveform of TL8841 to 5.6±0.1Vp-p with VCR ADJ EB.
4) Then adjust the same waveform VCR ADJ E5 to 3.2±0.1Vp-p.
5) Return VCR ADJ ED to the initial value. (Initial value: 7A)
Adjustment5.6 ± 0.1Vp-p (VCR ADJ EB)
rating3.2 ± 0.1Vp-p (VCR ADJ E5)
Sig. center
5.6Vp-p 0.1Vp-p
3.2Vp-p 0.1Vp-p
GND
Examples• During IC705 or IC8800 replacement.
12. VF sub-brightness R/B adjustment
Test pointTL8842(VR), TL8841(VG), TL8843(VB)AddressVCR ADJ E9(R), VCR ADJ EA(B)
ModeVCR AV input
Procedure1) Input white 40% signal into the AV input and standard monitor.
2) Adjust it with the VCR ADJ E9/EA so as to obtain the same color as the standard monitor.
AdjustmentStandard monitor
rating
Examples• During IC705 or IC8800 replacement.
34
Page 35
ADJUSTING THE MIC AMP CIRCUIT
C690
R6615
3
(Wiring board diagram: Sub Side A)
VL-AX1U
52
TL3742TL3739
TL3743
TL602
C635
TL3737
TL3738
87
R689
R663
TL3730
Q608
Q601
688
R686
TL3774
C686
C646
C637
R3801
R3818
TL3725TL3722
R3812
TL3716
TL3715
TL6606(INT MIC L)
EE level
Frequency character
TL3745
R610
Q602
TL605
C603
C616
R603 R609
TL3731
TL3733
TL604
TL3735
TL3732
TL3734
TL3736
R6626
R6625
R6627
C6603
TL6605
TL6606
C6608
TL6607
R6612
TL6607(INT MIC R)
EE level
Frequency character
TL3747
TL605
EE level
Frequency character
Super-directional microphone
TL604
EE level
Frequency character
Super-directional microphone
R6611
R664
C6611
C6605
R6603
C6607
C6610
Q6602
C6602
C6650
R6624 R6604
C6604
IC6601
C6621
R6628
C6622
R6664
R6665
R6666
C6630
R6629
TL6609(GND)
EE level
Frequency character
Super-directional microphone
TL6608(TELE-MIC)
Super-directional microphone
TL6610(OPEN)
EE level
Frequency character
Super-directional microphone
Test signal1kHz -54dBs sine wave
Procedure1) Input 1kHz, -54dBs sine wave into TL6608(TELE-MIC).
RemarkTL6610: OPEN, TL6609: GND
Wind sound decrease "OFF"
2) Make sure that the signal level of TL605 Audio-L out and TL604 Audio-R out is within the
standard limits.
35
Page 36
VL-AX1U
DV INTERFACE (IEEE1394) ID SETTING
This unit has a DV interface function conforming to IEEE1394. Therefore, each individual ID number must be used for each unit. Since this ID is written
on the E
■ ID code is acquired
1. Connect with the EUI48/64 ID code control system.
2
PROM (IC302) on the head amp PWB, the ID must be newly written when replacing this IC or the head amp PWB.
Address 180, 17F, 17EModeVCR
Adjustmentrating ID number obtained from the URL below
Procedure1) Refer to the ID code application below.
2) Set the data obtained in step (1) to the corresponding addresses in the VCR adjustment mode.
* (Example) The data "08001F 0100 123456" is obtained.
(1) Enter the unit in the VCR ADJ mode.
(2) Set the ID numbers as follows.
Address 180 17F 17E
Data 12 34 56
Examples• During E
2
PROM (IC302: on the H/A unit) replacement. • During the H/A unit (RAMP-0035TAN0) replacement.
(1) Start the Internet Explorer or Netscape Navigator.
(2) Access the following address.
(URL:http://www.rcg.kami.sharp.co.jp/quics/e_index.html)
Select the "EUI48/64 ID code control system" from the "Service" item.
Note: If you want to establish a connection by directly inputting the URL, please input the following.
URL:http://www1.rcg.kami.sharp.co.jp:7000/adrs_agt/adrs_dba/ide00010.main
The login screen will appear.
(3) For the [User ID], input the [Password].
Click on [Login].
(4) Click on [EUI 64 (IEEE 1394)] from the [1. Application for acquisition of ID].
Click
36
Page 37
(5) Click on [Repair use].
Click
(6) Input the necessary information for the application.
For the indispensable input items, be sure to input them.
Select the [Group/company] and [Kind name] from the list.
Input the [Model name].
Input the [Serial number].
Input the [Site/department of repair].
VL-AX1U
(7) Click on [motion].
The confirmation screen will appear.
(8) Click on [Yes].
2. Print the application result.
(1) Print out the application result screen.
Control the application result as evidence.
To print it, select "Print (P)" from the "File (F)" in the
menu bar or click on the print button in the tool bar.
(2) Click on [Menu] to complete the application.
If you create applications in succession, repeat steps
(1)~(8).
To complete it, click on [End] in the menu screen.
MODEL ID SETTING
Address VCR ADJ FD, FE, FFModeVCR
Adjustment rating The following table reference. VL-AX1U (102022)
Procedure1) Set the unit to the VCR ADJ mode.
AddressFDFEFF
2)
Data102022
Examples• During E2PROM (IC705) replacement.
37
Page 38
VL-AX1U
10-2. Camera Section Adjustments
10-2-1. Camera section service
(1)Camera adjustment is performed after the set has been completed.
(2)Subjects, measuring instruments and jigs needed for camera section service and adjustments
• Gray scale chart• Frequency counter• Video output cable
• Color bar chart• Illumination meter• AC adapter
• Oscilloscope• Color temperature meter• Extension cables
• Digital voltmeter• Color temperature conversion filter• Remote control unit for servicing
• Halogen lamp: 2 pcs. HOYA "LB-165"
• Vector scope• Color video monitor
10-2-2. List of camera jigs and tools
Configuration
<Note: The entries of list> 1. Name 2. Part No. 3. Code
1. Gray scale chart
(390 x 520 mm)
2. JiGCHART-1
3. CP
1. Color temperature
conversion filter
(3200 degrees K ⇒ 6800
degrees K)
2. JiGHOYA-LB165
3. BN
1. Color bar chart
(240 x 320 mm)
2. JiGCHART-4
3. DA
1. PC plate connector drawer
2. JiGTH-SS10
3. AW
1. Illumination meter
(0 to 3000 lux)
2. JiGMETER-1
3. CT
1. Remote control until for
servicing
2. RRMCG0033TASA
3. BT
1. Color temperature meter
(1600 to 40000 degrees K)
2. JiGMETER-2
3. EL
10-2-3. Adjusting the camera unit
(1)Preparations for adjustments and items to be checked
1) Set up the light box so that the entire pattern is evenly lit. Set the color temperature to 3200°K.
2) Use test patterns that are not dirty nor discoloured.
3) If the electrical circuitry gets in trouble, be sure to pinpoint the trouble spot with a measuring instrument and repair or replace
the defective part.
(2)Remote control for servicing RRMCG0033TASA
To adjust the camera section of this machine, the remote control for servicing (RRMCG0033TASA) is used. The adjustment is made
in such a manner that the remote control writes necessary data by way of the microprocessor to the specific addresses on the
2
PROM (IC502).
E
1) To adjust the camera:
Press the "CONTINUE" key first and then the "CAM ADJ" key.
This will show
CAM ADJ
on the LCD screen, thereby having the camera unit ready for the adjustments.
2) Descriptions of the displays
CAMADJ (Indicates the camera adjustment mode.)
(Address value)(Data value)
* The address values for this machine range from 0000 to 09FF.
* The data include byte data (the last two digits are effective) and 2-byte data (the last three digits are effective).
3) Descriptions of the remote control keys
"FF" key:Increases the address and data values.
"REW" key: Decreases the address and data values.
"PLAY" key: Specifies addresses and calls the data.
This key also fixes the data values.
"STOP" key: Clears the data to enable the selection of address.
38
Page 39
4) Operation flow
FF or REWPLAYPLAYSTOPFF or REW
Address is selected and specified, with the data called. Then the called data are selected and
fixed. The operation flows in this sequence.
5) When the adjustment is complete:
Press the "CONTINUE" key to let the "CAM ADJ" display disappear from the screen.
Note: Before terminating the adjustments, make sure that the adjustment mode is neither the auto-focus function adjustment
mode nor the camera signal system adjustment mode (these modes are mentioned later).
• Camera unit adjustment modes
The camera unit is adjusted in two types of modes: the auto-focus function adjustment mode and the camera signal system
adjustment mode.
VL-AX1U
Note: E
2
PROM contains the adjustment item data as shown below. If it is changed, data rewriting and confirmation of latest data
must be performed.
1) E2PROM on Camera Head Section
Lens Data
2) E2PROM(IC502) on main unit
Signal system adjustment data
(3)Auto-focus function adjustment mode
• The camera unit uses a microprocessor-controlled auto-focus zoom lens.
The auto-focus circuit incorporated in this unit is designed to execute the image processing where the focusing action is done by
taking advantage of the fact that the high-frequency components in the image signals increase as the focus intensifies. Moreover,
to achieve high magnifying power with a small lens, the camera unit incorporates the inner focus system in which the focus is shifted
by moving the master lens (rear lens) back and forth. This inner focus system is a full-range focus type by which the focus can be
shifted from approximately 10 mm to the infinity. It should be noted, however, that since the closest subject distance at the telephoto
end is fixed at 1.5 m, subjects in a closer range than 1.5 m at the telephoto end will be out of focus. For this reason, the unit is
designed so the zoom control is automatically shifted to the wide angle side until the position is found where the subject can be
focused on.
In the auto-focusing system of this until, the following constitute the important factors:
• Master lens position detection data
• Iris position detection data
• Zoom lens position detection data
2
These detection data are handled and stored by the microprocessor, lens by lens, into the E
PROM.
Therefore, in the following cases, the auto-focus function adjustment is required:
• When the lens has been replaced
• When the CCD has been replaced
2
• When the E
PROM has been replaced
1) Shifting to the auto-focus function adjustment mode
Set the data for the address "0000" to " 01".
]
This makes the screen fade temporarily in white and shifts to the auto-focus function adjustment mode.
* When this adjustment mode has been shifted to, make the adjustment according to (5) Camera unit adjustment procedure.
* In this adjustment mode, the lens can not be operated.
2) Shifting to the normal operation mode
Set the data for the address "0000" to " FF".
]
This makes the screen fade temporarily in white and shifts to the normal operation mode.
]
Press the "CONTINUE" key, and the "CAM ADJ" display goes out of the screen, enabling the normal operation.
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VL-AX1U
(4)Camera signal system adjustment mode
In the camera signal system adjustment mode, the automatic white balance is disabled to allow for the adjustment of the camera
unit. At this time, the white balance mode is fixed at the INDOORS mode and the focus mode is switched to the manual focus mode.
1) Shifting to the camera signal system adjustment mode
Set the data for the address "0000" to " 00".
]
This shifts the camera signal system adjustment mode.
* When this adjustment mode has been shifted to, make the adjustment according to (5) Camera unit adjustment procedure.
2) Shifting to the normal operation mode
Set the data for the address "0000" to " FF".
]
This shifts the mode to the normal operation mode.
]
Press the "CONTINUE" key, and the "CAM ADJ" display goes out of the screen, enabling the normal operation.
(5)Camera unit adjustment procedure
1. Auto focus adjustment
2. Iris, ND Meter basic adjustment
3. Black balance adjustment/A/F noise adjustment
7. White balance adjustment
8. Indoor white gain adjustment
9. Color gain adjustment
4. Iris AE coarse adjustment
10. Auto white balance adjustment
5. White balance coarse adjustment
11. Outdoor white gain adjustment
6. Color gain coarse adjustment
12. Iris AE adjustment
* The above 1. Auto-focus function adjustment in the auto-focus function adjustment mode, whereas the other adjustments are made
in the camera signal system adjustment mode.
(6) Replacement procedure of gyro unit
2
1) When replacing E
Since the adjustment data of gyro is written in E
PROM on lens unit of camera head with the gyro unit not replaced
2
PROM, copy the data of addresses "0864, 0865, 0866, 0867" and rewrite them
after replacement.
2) When replacing the gyro sensor: RMC1001, RMC1002
After replacing with the specified gyro sensor, write the following data in the addresses "0864, 0865, 0866, 0867".
Ref No.Part codeAddressData
RMC1002Replacement with RSNSG0004CEZZ
RMC1001Replacement with RSNSG0013CEZZ
086402
086530
086604
086700
40
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10-2-4. Adjustment procedures
VL-AX1U
Item
(1) Auto-focus adjustment
Set the unit to the auto-focus function adjustment mode and write data to the address "0001" one after another. This executed
the adjustments automatically. The items to be adjusted are as listed below. Every time an adjustment is made properly, the data
"00FF" is written to the address. After each adjustment, make sure that the adjustment has been made properly, and then go on
to the next adjustment item.
AddressDataAdjustment item
00010012WIDE end adjustment
0006WIDE end focus ∞ position adjustment
0008TELE end focus ∞ position adjustment
000DZoom tracking adjustment
Note 1: To adjustment of ∞ position is executed by actually picking up the image of subject. For this adjustment use the subject with
clear profile.
Especially, if the adjustment of TELE end focus ∞ position is made without picking up the image of remote subject,
adjustment failure may occur.
Adjustment of WIDE end focus ∞ position: 3 m or more
Adjustment of TELE end focus ∞ position: 50 m or more
Note 2: In case of ∞ position adjustment the field depth is important to ensure the adjustment accuracy. If the field depth is high,
the focus becomes too stable , which may cause incorrect adjustment of ∞ position. Therefore the adjustment must be made
with low field depth (with iris opened).
The iris can be opened with the high-speed shutter.
1. It returns to the normal operation mode.
2. In the normal operation mode, set the high-speed shutter mode until the iris is opened. (Refer to the operation manual.)
3. Display “CAM ADJ” with the remote control for service.
4. It shifts to the auto-focus adjustment mode.
5. Perform the ∞ position adjustment.
6. After completing the ∞ position adjustment, return the high-speed shutter mode to the normal mode.
Adjustment method
In the camera signal system adjustment mode (write the data " 00" to the address "0000"), set the unit to the
adjustment mode.
(2)Iris/ND Meter basic adjustment
This is for adjusting the operating point of the hole element installed in the iris meter of the lens.
The adjustment is automatically done by sequentially writing the data at the address "0001" in the camera signal system
adjustment mode.The items to be adjusted are as listed below. Every time an adjustment is made properly, the data "00FF" is
written to the address.
AddressDataAdjustment item
00010009Hall offset adjustment
000AIris offset adjustment
000BIris close adjustment
(3) Black balance adjustment/A/F noise adjustment
1) Prior to the adjustment, initialize the data for the addresses "0500", "0502", "0504", "0506", "0508", "050A".
Write " FF" to all of these address.
2) Write the data " 01" to the address "0001" This starts the adjustment automatically.
When the adjustment is completed properly, the data "00FF" is written automatically.
FF
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VL-AX1U
Item
(4)Iris AE coarse adjustment
• Measurement terminal:
S terminal luminance signal output
(75 Ω termination)
• Address: "0002" AE_CVT
• Measuring instrument:
Oscilloscope (horizontal sync)
• Object:
Grey scale
• Data variation width:
"0000" to "00FE"
(5)White balance coarse adjustment
• Measurement terminal:
EE output
• Address:
"0128" CGAIN_KR_W
"012A" CGAIN_KB_W
• Measuring instrument:
Vector scope
• Object:
Grey scale
• Data variation width:
"0000" to "03FF"
Adjustment method
(1)Video output is observed with the oscilloscope in the grey scale standard record state,
the data of address "0002" is rewritten, and the luminance signal level is adjusted white
to 760 ± 10mVp-p, gray of the background 420 ± 10mVp-p.
100mV/div
(1)Indication on the vector scope is observed in the grey scale standard record state,
data of address "0128" and "012A" are rewritten, and an adjustment is made so that
the luminous dot is located in the position of burst ratio:
(1)The color bar chart is imaged, and the picture angle is adjusted so as to get white level
700 mV. Indication on the vector scope is observed, the data of address "013A",
"013C", "0138", "0136", "07DE"and "07DD" are rewritten, and setting is made so that
the red, blue and yellow luminous dots are located in the following positions. (The gain
of vector scope must be set on 75% amplitude point on the B-Y axis.)
Adjustment address
Red amplitude1.85 ± 0.1 time (burst ratio): "013A"
Blue amplitude1.50 ± 0.1 time (burst ratio): "013C"
Yellow amplitude1.35 ± 0.1 time (burst ratio): "07DE"
Red phase103° ± 2°: "0138"
Blue phase358° ± 2°: "0136"
Yellow phase164° ± 2°: "07DD"
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VL-AX1U
Item
(7)White balance adjustment
• Measurement terminal:
EE output
• Address:
"0128" INDOOR_W/B R
"012A" INDOOR_W/B R
(1) White balance adjustment is performed repeatedly.
(1)The adjustment is automatically done by writing the data "05" at the address "001" in
the signal system adjustment mode.
When the adjustment is normally completed, the data "FF" will be return to the address
"001". If another data except "FF" is returned, it will be judged as the poor adjustment.
(1) Color gain adjustment is performed repeatedly.
Adjustment address
Red amplitude1.85 ± 0.05 time (burst ratio): "013A"
Blue amplitude1.50 ± 0.05 time (burst ratio): "013C"
Yellow amplitude1.35 ± 0.05 time (burst ratio): "07DE"
Red phase103° ± 1°: "0138"
Blue phase358° ± 2°: "0136"
Yellow phase164° ± 2°: "07DD"
(10) Auto white balance adjustment
• Measurement terminal:
EE output
• Address:
"000C" OUTDOOR R
"000E" OURDOOR B
• Measuring instrument:
Vector scope
• Object:
Grey scale
• Data variation width:
"0000" to "03FF"
(11) Outdoor white gain adjustment
• Measurement terminal:–
• Address: 0001
• Measuring instrument:–
• Object: White pattern
• Data variation width:–
(1)The color temperature conversion filter (LB165) is mounted in front of lens.
(2)Indication of vector scope is observed in the grey scale standard record state, and
an adjustment is made so that the luminous dots are located in the following
positions:
R-Y 0 ± 5% (burst ratio)
B-Y 0 ± 5% (burst ratio)
(1) Attach the color temperature conversion filter (LB165) in front of the lens.
(2) The adjustment is automatically done by writing the data "06" at the address "001"
in the signal system adjustment mode.
When the adjustment is normally completed, the data "FF" will be return to the
address "001". If another data except "FF" is returned, it will be judged as the poor
adjustment.
43
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VL-AX1U
Item
(12) Iris AE adjustment
• Measurement terminal:
S terminal luminance signal output
(75 Ω termination)
• Address: "0002" AE_CVT
• Measuring instrument:
Oscilloscope (horizontal sync)
• Object:
Grey scale
• Data variation width:
"0000" to "00FE"
Adjustment method
(1) Set the unit to the normal operation mode (write the data " FF" to the address
"0000").
(2)Video output is observed with the oscilloscope in the grey scale standard record
state, the data of address "0002" is rewritten, and the luminance signal level is
adjusted white to 760 ± 10mVp-p, gray of the background 420 ± 10mVp-p.
100mV/div
44
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11. USEFUL TIPS (PROBLEMS DIFFER FROM THOSE FOUND ON VHS OR
The outline looks
like a Moire pattern.
Noise bar (Green)
+ random block
noise when tape
recorded on this
unit or another
unit is played back.
8MM DECKS BECAUSE THE SIGNALS ARE DIGITALLY PROCESSED.)
VL-AX1U
Camera (EE mode)
Picture fails
to appear
Major circuits to be checked
• CCD
• Camera circuits (CDS, ADC,
CAM ENGINE)
• MEC/SYS MiCON (IC704)
• VIDEO I/O (IC1401)
• VIO ENGINE (IC4401)
Camera (REC mode)
VCR (PB mode)
Blueback when
tape recorded on
this unit or another
unit is played back.
(EE OK)
VCR (EE mode)
Blueback fails
to appear.
Major circuits to be checked
• MEC/SYS MiCON (IC704)
• CAM ENGINE (IC201)
• REC/PB ENGINE (IC452)
Camera (REC mode)
VCR (PB mode)
Random block
noise when tape
recorded on this
unit or another
unit is played back.
Camera (REC mode)
VCR (PB mode)
Picture fails to
appear when tape
recorded on this
unit or another unit
is played back.
(EE OK)
Major circuits to be checked
• CAM ENGINE (IC201)
• REC/PB ENGINE (IC452)
or
Major circuits to be checked
• EQ/PLL (IC3401)
• Head amplifier (IC301)
* Dirty or defective video head
VCR (PB mode) + color bar
Lines appear on
the color bar.
Major circuits to be checked
• CAM ENGINE (IC201)
Major circuits to be checked
• EQ/PLL (IC3401)
• Head amplifier (IC301)
* Dirty or defective video head
VCR (PB mode) + color bar
There is considerable
randam block noise.
Major circuits to be checked
• Adjustment of the electromagnetic
conversion circuit system.
Camera (EE mode)
Major circuits to be checked
• Y data between CAM ENGINE
(IC201) and VIO ENGINE (IC4401)
is missing.
45
Page 46
VL-AX1U
12. SIGNAL FLOW DIAGRAMS
12-1. EE MODE FLOW (VIDEO)
CAM ADIN
209
200
CAM ENGINE
APT
VIO ENGINE
VIDEO I/O
SEP-Y IN/OUT
SEP-C IN/OUT
51
CZYP
38
22
ZYP
168
164
249
Y
14
9
VIDEO IN/OUT
IC201
58
65
CZCP
31
474341
IC1201
175
254
13
182
43 48 53
17
29
174
IC4401
C
IC1401
19
1
12
G
6 7 8
IC2800
24 22 20
G
R
LCD Panel
72
39
21
19
ZCP
189
187
184
259264269
Y
48
16
RRG
VF LCD Panel
B
B
WAVEFORM DIAGRAM
(DURING COLOR BAR RECORDING)
IC4401 249pin Y/YC Output
CH1=500mV
DC P*10
IC4401 170pin ZYP3 Input
CH1=1V
DC P*10
5ms/d
IC4401 124pin CDY3 Output
1
CH1=1V
DC P*10
192
R-Y
B-Y
2
1
IC8800
11
14
B
IC4401 184pin ZCP3 Input
CH1=1V
DC P*10
IC4401 134pin CDC3 Output
CH1=1V
DC P*10
5ms/d
IC4401 254pin C Output
1
CH1=500mV
DC P*10
20µs/d
1
5ms/d
1
5ms/d
1
20µs/d
12-2. FLOW IN REC MODE (VIDEO)
ZYP
168
164
130
127
CDY
40
244
REC GATE
VIO ENGINE
REC/PB ENGINE
B TO B
ZCP
175184
182
137
131
CDC
50
REC DATA
187
140
57
189
192
IC4401
IC452
243
SC3301
HEAD AMP
121
1
WAVEFORM DIAGRAM
(DURING COLOR BAR RECORDING)
IC452 244pin Rec GATE Output
CH1=1V
DC P*10
174
124
47
IC452 243pin Rec DATA Output
CH1=1V
DC P*10
5ms/d
1
5ms/d
1
46
Page 47
VL-AX1U
IC1602 Output
8
CH1=1V
DC P*10
10µs/d
1
12-3. FLOW IN PB MODE (VIDEO)
HEAD AMP
PB_DATA
44
13
2
227
288
IC3403
4
295
58
44
39
SC3301
IC3401
32
IC452
IC201
IC3404
12
21
3
ADIN
229236
5057
297304
65
CZCP
17
CDC
REC/PB ENGINE
CAM ENGINE
B TO B
PB_DATA
EQ/PLL
PB-CK
4047
CDY
282
51
CZYP
IC4401 to VIO ENGINE
same as in EE system
WAVEFORM DIAGRAM
(DURING COLOR BAR PLAYBACK)
IC3401 39pin PBDATA Input
CH1=500mV
DC P*10
IC3401 44pin Input
CH1=1V
DC P*10
5ms/d
1
5ms/d
A/D
10
1
IC3401 1pin Output
CH1=500mV
DC P*10
5ms/d
72
1
IC3401 32pin Output
CH1=500mV
DC P*10
5ms/d
1
12-4. FLOW IN REC MODE (AUDIO)
TELE-MIC
MIC AMP
AUDIO I/O
16Bit ADC/DAC
REC/PB ENGINE
47
2
IC6601
MIC R
IC601
AUD-R ADIN
IC1602
IC452
REC DATA
17
4239
20
2
8
AIDAT
13
243244
same as in
REC system
32
MIC L
4138
21
AUD-L ADIN
3
REC GATE
46
3
WAVEFORM DIAGRAM (1.6 kHz SINE WAVE)
INT-MIC-L
INT-MIC-R
47
Page 48
VL-AX1U
IC
1602 D
O
D
AT Inout
9
CH1=1V
DC P*10
10µs/d
1
12-5. FLOW IN PB MODE (AUDIO)WAVEFORM DIAGRAM (1.6 kHz SINE WAVE)
å CP1VHiCCP2B25/-1CCP2B25, 1.25A 24VAD
å CP2VHiCCP2B25/-1CCP2B25, 1.25A 24VAD
å CP3VHiCCP2B25/-1CCP2B25, 1.25A 24VAD
å CP4VHiCCP2B25/-1CCP2B25, 1.25A 24VAD
IC201RH-iX0785TAZZIX0785TA, CAMENGBL
IC202RH-iXA312WJZZQIXA312WJ, SDRAMAX
IC405VHiNJU7015R-1YNJU7015R, DC AmpAF
IC407RH-iXA193WJZZYIXA193WJ, Codec Externa AW