SHARP VLNZ55U, VLNZ105U, VLNZ155U Service Manual
SERVICE MANUAL
VL-NZ55U/NZ105U
VL-NZ155U
SERVICE MANUAL
S62K5VL-NZ55U
LIQUID CRYSTAL DIGITAL CAMCORDER NTSC
VL-NZ55U
VL-NZ105U
LIQUID CRYSTAL DIGITAL CAMCORDER
1. IMPORTANT SERVICE NOTES ........................................................................................................ 2
2. SPECIFICATIONS.............................................................................................................................. 6
3. PART NAMES .................................................................................................................................... 7
4. DISASSEMBLY OF THE SET............................................................................................................ 8
5. MECHANISM ADJUSTMENT JIGS AND PARTS............................................................................ 10
6. INSPECTION AND MAINTENANCE
ITEMS AND INTERVALS ................................................................................................................. 11
NTSC
MODELS VL-NZ55U/NZ105U/NZ155U
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................................................................................................................................... 42
12.SIGNAL FLOW DIAGRAMS ............................................................................................................. 43
13.BLOCK DIAGRAMS ......................................................................................................................... 46
14.SCHEMATIC DIAGRAMS ................................................................................................................ 52
15.SEMICONDUCTOR LEAD IDENTIFICATION ............................................................................... 116
16.PRINTED WIRING BOARD ASSEMBLIES.................................................................................... 118
17.REPLACEMENT PARTS LIST ....................................................................................................... 135
18.PACKING OF THE SET ................................................................................................................. 155
MODELS
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-NZ155U
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-NZ55U/NZ105U
VL-NZ155U
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 IMPOR TANTES
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
VL-NZ55U/NZ105U
VL-NZ155U
WARNING :TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK, DO NO T EXPOSE
THIS APPLIANCE TO WET LOCATIONS.
CAUTION
RISK OF ELECTRIC SHOCK
DO NOT OPEN
CAUTION: TO REDUCE THE RISK OF ELECTRIC
SHOCK. DO NOT REMOVE COVER. NO
USER·SERVICEABLE PARTS INSIDE.
REFER SERVICING TO QUALIFIED SERVICE
PERSONNEL.
This symbol warns the user of uninsulated
voltage within the unit that can cause dangerous electric shocks.
This symbol alerts the user that there are
important operating and maintenance instructions in the literature accompanying this unit.
CAUTION
This symbol mark means following.
For continued protection against fire hazard, replace only with same type fuse.
(CP1; 1A 24V, CP2; 1A 24V)
Camcorder
only
ATTENTION:POUR REDUIRE LES RESQUES D'INCENDIE OU DE CHOC ELECTRIQUE,
NE PAS EXPOSER CET APP AREIL A LA PLUIE OU A L'HUMIDITE.
ATTENTION
RISQUE DE CHOC ELECTRIQUE
NE PAS OUVRIR
ATTENTION: AFIN DE REDUIRE LES RISQUES DE
CHOC ELECTRIQUE, NE PAS RETIRER LE
COUVERCLE, AUCUN ORGANE INTERNE
NE PEUT ETRE REPARE PAR
L'UTIUSATEUR, CONFIER L'APPAREIL A
UN DEPANNEUR QUALIFIE.
Ce symbole signale à l'utilisateur la présence
d'une tension non isolée à l'intérieur de l'appareil
qui peut être la cause de secousses électriques
dangereuses.
Ce symbole avertit l'utilisateur que des instructions importantes relatives à l'utilisation
et àl'entretien se trouvent dans le manuel
accompagnant l'appareil.
ATTENTION
Ce symbole signifie que l'on devra utiliser un fusible de même type (CP1; 1A
24V, CP2; 1A 24V) pour assurer la
sécurité.
Camcorder
seulement
3
VL-NZ55U/NZ105U
VL-NZ155U
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.
CAUTION
BEFORE BATTERY DESTROY
TM* Nickel-Cadmium Battery Recycling Program in the United
TM Seal on our battery pack contained in our product indicates that SHARP is
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
VL-NZ55U/NZ105U
VL-NZ155U
■ PRECAUTIONS FOR USING LEAD-FREE SOLDER
1) Employing lead-free solder
"Main PWB", "Camera head PWB", "Audio I/O PWB", "Card PWB", "Inverter PWB", "Operation PWB", "DC Jack PWB",
"CCD PWB" of this model employs lead-free solder. The LF symbol indicates lead-free solder, and is attached on the
PWBs and service manuals. The alphabetical character following LF shows the type of lead-free solder.
Example:
Indicates lead-free solder of tin, silver and copper
2) Using lead-free solder
When fixing the PWB soldered with the lead-free solder, apply lead-free wire solder. Repairing with conventional lead
wire solder may cause damage or accident due to cracks.
As the melting point of lead-free solder (Sn-Ag-Cu) is higher than the lead wire solder by 40°C, we recommend you to
use a dedicated soldering bit. If you are not familiar with how to obtain lead-free solder or soldering bit, contact our
service station or service ranch in your area.
3) Soldering
As the melting point of lead-free solder (Sn-Ag-Cu) is 220°C which is higher than the conventional lead solder by 40°C,
and as it has poor solderability, you may be apt to keep the soldering bit in contact with the PWB for extended period
of time. However, since the land may be peeled off or the maximum heat-resistance temperature of parts may be
exceeded, remove the bit from the PWB as soon as you confirm the steady soldering condition.
Lead-free solder contains more tin, and the end of the soldering bit may be easily corroded. Make sure to turn on and
off the power of the bit as required.
If a different type of solder stays on the tip of the soldering bit, it is alloyed with lead-free solder. Clean the bit after every
use of it.
When the tip of the soldering bit is blackened during use, file it with steel wool or fine sandpaper.
Lead-free wire solder for servicing
Part No. ★ Description Price Code
ZHNDAi123250E J φ0.3mm 250g(1roll) BL
ZHNDAi126500E J φ0.6mm 500g(1roll) BK
ZHNDAi12801KE J φ1.0mm 1kg(1roll) BM
5
VL-NZ55U/NZ105U
VL-NZ155U
2. SPECIFICATIONS
Recording/Playback Time: 90 minutes (DVM60, LP mode)
Lens Filter Diameter: 27 mm
Color Temperature Compensation: Auto white balance with white balance lock
Minimum Illumination: 1 lux (12 lux measured by EIA standard)(with gain-up, F1.8)
Still Image Compression System
(VL-NZ105U/NZ155U only): JPEG base line conformance
Still Image Recording Format
(VL-NZ105U/NZ155U only): JPEG (Exif2.1)
Still Image Recording Medium
(VL-NZ105U/NZ155U only): SD Memory Card, MultiMediaCard
Power Requirement: DC 7.4 V
Power Consumption: 4.3 W (during camera recording in Full Auto mode with zoom motor off and
Operating Temperature: 32°F to 104°F (0°C to +40°C)
Storage Temperature: –4°F to 140°F (–20°C to +60°C)
Dimensions (approx.): 5 9/16" (W) × 3 11/32" (H) × 2 5/16" (D)
Signal System: NTSC standard
Recording System: 2 rotary heads, helical scanning system
Cassette: Digital VCR Mini DV video cassette
Tape Speed: SP mode: 18.812 mm/second
LP mode: 12.555 mm/second
Pickup Device:1/4" (6.4 mm, effective size: 4.5 mm) CCD image sensor
(with approx. 460,000 pixels including optical black)
Lens: 10 × optical/300 × digital power zoom lens (F1.8, f=3.6-36.0 mm), full-range auto
focus
Monitor: 3" (7.5 cm) full-color LCD screen (TFT active matrix)
Microphone: Electret stereo microphone
backlight normal mode)
Operating Humidity: 30% to 80%
[141.1 mm (W) × 85.1 mm (H) × 58.5 mm (D)]
Weight (approx.): VL-NZ55U: 1.01 lbs (460 g)
VL-NZ105U/NZ155U: 1.03 lbs (465 g)
(without battery pack, lithium battery, video cassette, lens cap, lens hood, wrist
strap and card(VL-NZ105U/NZ155U only))
AC Adapter(UADP-0339TAZZ)
Power Requirement: AC 110-240 V, 50/60 Hz
DC Output: 10 V
Dimensions (approx.): 1 31/32" (W) × 1 1/16" (H) × 2 19/32" (D)
[50.0mm (W) × 27.0mm (H) × 65.5 mm (D)]
Weight (approx.): 0.22 lbs (100 g)
SD Memory Card(VL-NZ105U/NZ155U only)
Memory Capacity: 8 MB(VL-NZ105U), 16MB(VL-NZ155U)
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.
SERVICE INFORMATION (For the U.S.)
For the location of the nearest Sharp Authorized Service, or to obtain product literature, accessories,
supplies or customer assistance, please call 1-800-BE SHARP (1-800-237-4277) or visit SHARP's
website (http://www.sharp-usa.com)
6
3. PART NAMES
For details on the use of each control.
VL-NZ55U/NZ105U
VL-NZ155U
Stereo microphone
Zoom lens
Cassette compartment door
Cassette compartment door release
Cassette holder
Remote sensor
(VL-NZ105U/
NZ155U only)
DC input jack
Lithium battery
compartment door
GAMMA/
BRIGHTER
button
FADE button
SET button
Wrist strap loop
MENU button
Battery release
RECord START/STOP
button
STILL button
MANUAL button
Power switch
(CAMERA/VCR
select switch)
Speaker
Card slot cover
(VL-NZ105U/
NZ155U only)
DV terminal
USB terminal
(VL-NZ105U/
NZ155U only)
AV jack
Jack cover
Battery mounting surfaceTripod adapter socket
Power Zoom Wide angle/
Telephoto control/
VOLume control
Media Selection switch
(TAPE/CARD selectionswitch)
(VL-NZ105U/NZ155U)
GUIDE ON/OFF
switch(VL-NZ55U)
Operation button
LCD monitor
7
VL-NZ55U/NZ105U
VL-NZ155U
4. DISASSEMBLY OF THE SET
Note:
Before removing the cabinet, turn off the power supply, and ascertain that the battery have been removed.
1.
(i)
(i)
Battery Unit
1) Remove the battery unit.
2) Remove the 4 screws ((i)XiPSF17P03000).
3.
(c)
(h)
(h)
(i)
(i)
(i)
Radiation Angle
(c)
LCD Panel
(c)
FPC
1) Remove the 1 screw ((i)XiPSF17P03000) and 2 screws
((h)XiPSF17P02000).
2) Remove the 2 screws ((c)XiPSN17P03000) to detach the
VCR operation PWB. Then remove the FPC of the LCD panel
and FPC of the reflector to detach the LCD panel.
3) Remove the 3 screws ((c)XiPSN17P03000) to detach the
radiation angle.
2.
(q)
1) Remove the 1 screw ((q)LX-HZ0050TAFF) .
4.
Lid Lock Fitting
Tilte FPC
(c)
Main PWB
Connector
(i)
Battery Cover
(i)
(i)
(i)
(i)
1) Remove the 1 screw ((c)XiPSN17P03000) and disconnect
the tilt FPC to detach the main PWB.
2) Remove the lid lock fitting.
3) Remove the 3 screws ((i)XiPSF17P03000) to detach the
battery cover.
4) Remove the 2 screws ((i)XiPSF17P03000) and disconnect
the connector to detach the lens section.
8
VL-NZ55U/NZ105U
VL-NZ155U
5.
Mechanism
(k)
(k)
(k)
(m)
1) Take the mechanism out.
2) Remove the 3 floating screws A ((k)LX-BZ0251TAFD) and 1
floating screw B ((m)LX-BZ0253TAFN).
6.
7.
(i)
(i)
Microphone Cover
(v)
(i)
NZ55U
NZ105U/NZ155U
(h)
(c)
(i)
Camera Rear
Cabinet
(i)
1) Remove the 7 screws(NZ105U/NZ155U only), 6 screws(NZ55U
only) ((i)XiPSF17P03000), 1 screw ((h)XiPSF17P02000)
(NZ55U only) and 1 screw ((c)XiPSN17P03000) (NZ55U only)
fixing the camera rear cabinet to detach it. (Note: When
detaching the camera rear cabinet, pay attention to the FPC of
the camera operation unit.)
2) Remove the 2 screws ((i)XiPSF17P03000) and detach the
camera side cover in the direction of the arrow. (Note: When
detaching the side cover, pat attention to the lead wire of the
speaker.)
3) Remove the 1 screw ((i)XiPSF17P03000) and 1 screw
((v)XiPSF17P06000) and detach the microphone cover in
the direction of the arrow. (Note: When detaching the microphone cover, pay attention to the lead wire of the microphone.)
4) Remove the 2 screws ((c)XiPSN17P03000) and camera
front cabinet.
Camera Front Cabinet
(i)
(i)
(i)
(i)
(i)
Camera Rear
Cabinet
(i)
Lithium Holder
(r)
(r)
Lithium PWB Unit
1) Remove the lithium holder and 2 screws ((r)XiPSN17P04000)
to detach the lithium PWB unit.
8.
(c)
Power SW Unit
1) Remove the 1 screw ((c)XiPSN17P03000) to detach the
power SW unit. (Note: When detaching the power SW unit,
pay attention to the FPC.)
2) Remove the 1 screw ((c)XiPSN17P03000) to detach the lens
unit.
(c)
9
VL-NZ55U/NZ105U
VL-NZ155U
5. MECHANISM ADJUSTMENT JIGS AND PARTS
5-1. Mechanism check adjustment jigs
<Note: The entries of list>
Configuration
1. Name
2. Part No.
3. Code
* Model, Uses Remarks
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.
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.
<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
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
Configuration
1. Name
2. Part No.
3. Code
* Model, Uses Remarks
String
String
Fig. 2
10
VL-NZ55U/NZ105U
VL-NZ155U
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
Fig. 2
VL-NZ55U/NZ105U
VL-NZ155U
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
A
setting values
MIC contacts
Fig. 2
B
12
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
Apply screwlock
Tension roller position (S guide standard)
Screw2
Screw1
CCW
CW
Fig. 4. Check (tape exists)
Tension roller position (S guide standard)
0.2~0.6mm (Standard)
Tension roller
VL-NZ55U/NZ105U
VL-NZ155U
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
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VL-NZ155U
<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-NZ55U/NZ105U
VL-NZ155U
<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
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VL-NZ155U
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-NZ55U/NZ105U
VL-NZ155U
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-NZ55U/NZ105U
VL-NZ155U
(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.
(6)STOP mode
The system is in the STOP (Rec Lock in CAMERA mode)
position; the S and the T pole bases are snap-fitted to the drum
base, the S brake is in contact with the S reel base, and the Tu
brake is in contact with the Tu reel base.
S pole base
T pole base
S reel base
S main brake
Pinch roller
Capstan shaft
Tu reel base
Tu main brake
(Not visible)
S reel base
S main brake
PLAYBACK mode diagram
(RECORD, FF, VSF)
STOP mode diagram
9-2. Cassette controller assembly
<Removing>
(1) Apply DC3V to the loading motor to enter the standby mode.
Press the lock lever in the arrow direction to raise the cassette controller. (See Fig. 1; A or B direction.)
(2) Turn the damper lever in the arrow
(3) Remove two screws
, and remove the down guide D in the arrow F direction. (See Figs. 3 and 4.)
E
Take care that the slide chassis is provided with the down guide positioning
(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
.
or
H
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
G
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.
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VL-NZ55U/NZ105U
VL-NZ155U
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-NZ55U/NZ105U
VL-NZ155U
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.
2.
Pinch control lever
Mode SW
303
463
A-3
EJECT control lever
EJECT lever
360
Groove grease
A-2
A-1
Main cam
304
302
Pinch drive lever
361
Main chassis Ass'y(Front surface)
301
LM/Mode FPC
465
Item
Tightening torque
Quantity
A S Tight · M1.4 x L3 70mN·m3
Cam groove grease
Coupling
gear
370
AHC cam
369
Shifter drive lever
B
Ass'y
305
371
Sub cam
4.
5.
T arm control
lever stopper
363
Phase match check
E
E
H/A PWB angle
315
Center pulley
Ass'y
Drive belt
367
459
Item
Intermediate gear angle
sub Ass'y
F
312
364
365
421
Intermediate gear
stopper
366
Intermediate pulley
Ass'y
Capstan FPC stopper
311
C
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
Enter part of
convexity rear
surfacer
Guide rail sub Ass'y
Phase match check
Guide rail sub Ass'y
(Rear surface)
Quantity
3.
T arm control lever
Groove grease
Groove grease
309
Loading lever
306
Item
Tightening torque
Quantity
BCWø1.2-ø3.0-t0.25 1
Loading motor Ass'y
461
Loading motor
D
fitting Ass'y
Slide chassis
C
guide
386
Item
Capstan motor
462
C
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
G
Special head screw ·
Item
Tightening torque
Quantity
40mN·m2
M1.4 x L1.5
6.
Sup pole base Ass'y
S loading arm
Ass'y
307
S pressure spring
395
372
S loading gear
I
451
H
Guide roller Ass'y
454
Tu loading arm Ass'y
H
396
373
Tu loading gear
Item
Tu pole base
452
Ass'y
I
Guide rail
362
308
Tu pressure spring
Tightening torque
Quantity
HCWø0.7-ø2.2-t0.25 2
I Special screw · 5mN·m2
M1.2 x L1.8
(Tentative tightening)
VL-NZ55U/NZ105U
VL-NZ155U
9-5-2. Reassembly in side of the Slide chassis.
Note) Numbers before part names are given as a guide to the order of assembly.
As for greasing/oiling/cleaning places refer to the attached drawings (Grease/Oil application side of the slide chassis)
1.
Slide adjustment
angle
Grease
376
S cassette stay
K
382
Tu pole
381
383
352
Tu guide
arm
Ass'y
393
Tu guide
arm SPR.
Tightening torque
397
Guide
adjustment
SPR.
H
Note1)
344
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
Sensor FPC cover
502
466
Damper
Spring
Quantity
2.
T roller upper
382
flange
T roller Ass'y
457
415
458
H
455
T roller inner
384
T roller bottom
383
flange
39
7
Guide adjustment
SPR.
S guide hexagon
428
nut
385
S guide sleeve
Pinch lever Ass'y
Grease
Pinch lever
394
return SPR.
Tension arm Ass'y
354
456
N
T spring
hanging
ANG
356
K
B
Tu main
brake
375
O
411
415
M
T arm SPR.
H
N
351
392
Tu reel base
Ass'y
411
O
391
Main brake
SPR.
S reel base Ass'y
Main brake SPR.
Fit the main brake SPR from
above, and close with the hook.
F
Swing arm release
lever fixing screw
Swing arm
release lever
Swing arm
release SPR.
420
357
390
Tension band
Ass'y
S main brake
391
L
374
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.
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
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VL-NZ55U/NZ105U
Grease
(Rear surface,
groove side surface)
470
453
399
398
438
314
A
A
A
F-3
F-4
F-5
F-2
F-1
PB guide SPR.
Drum base Ass'y
Grease
(Front surface, rear surface,
groove side surface)
Tightening torque
50mN·m
Drum Installation screw
Drum fixing SPR
Drum Ass'y
Mechanism fixing angle
VL-NZ155U
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 (
main chassis side, move the slide chassis in the arrow direction, using
into the groove of slide chassis, and install with the 4 screws.
tension arm, 2 Tu guide arm, 3 pinch lever) in the position shown below at the
1
A
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
3.
M1.4 x L1.6
2.
355
Reel cover Ass'y
Oil
FPC cover
377
P
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
M1.4 x L1
40mN·m1
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
Type 2 minuteness
M1.4 x L2
Item
Q
500
Head amplifier PWB unit
501
H/A FPC shield plate
Q
Tightening torque
40mN·m3
22
VL-NZ55U/NZ105U
VL-NZ155U
GREASE/OIL APPLICATION
Including groove
side surface
(Applied)
Rear surface · groove
side surface
Drum base assembly
Intermediate gear angle
Pinch control lever
Front surface · rear
surface · groove
side surface
Side of the main chassis
(Applied)
Main cam
S loading arm
Enabled after
assembling
Capstan FPC stopper
From rear
surface side
From rear
surface side
Enabled after
assembling
T arm control lever
Loading lever
Tu loading arm
: Oiling(Cosmo Hydro HV22)
O
: Greasing(Moly Coat YM-103)
G
: Greasing(Moly Coat YM-103)
Swing arm
After joining the main chassis
and 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-NZ55U/NZ105U
VL-NZ155U
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-NZ55U/NZ105U/NZ155U Specifications of service jigs
No. Connection section Connector REF. No.
1 H/A_PWB–H/A_FPC P306– 80B-B QCNW-1832TAZZ BV
2 H/A_FPC–Main –SC3301 80B-B CPWBH2876TA01 Product unit use AS
3 Main–Battery Terminal SC900← 20B-B QTANZ0152TAZZ Product unit use AN
4 Main–LCD Panel SC2801–LCD Panel 24 QCNW-1382TAZZ or BD
5 Main–Inverter PWB SC2802–SC9801 9 N QPWBHB196WJZZ AD
6 Inverter–Lamp Unit SC9802–LAMP 4 Direct connection : High tension caution —
7 Main–Operation PWB SC701–SC2001 6 QPWBHB197WJZZ Product unit use AD
8 Main–AIO PWB SC1202–SC2604 33
9 Main–Card PWB SC1204–SC1502 27
10 Main–Cam Head SC1201–SC53 33
12 Power/Snap SW–Mic Unit SC2701← 4 RMiCC0108TAZZ Product unit use AP
13 AIO–Power/Snap SW Unit SC2601← 10 QSW-ZA004WJZZ Product unit use AW
14 AIO–Zoom Ope SW Unit SC2602← 11 QSW-ZA010WJZZ Product unit use AX
15 AIO–Speaker P601← 2 VSP0020P-918N Product unit use AL
16 Cam Head–Lens SC551← 24 Direct connection —
17 Cam Head–CCD PWB SC21–SC101 33 QPWBHB194WJZZ Product unit use AD
18 Cam Head–Turn SW Unit P51← 2 QSW-Z0376TAZZ Product unit use AF
19 Cam Head–Main P52–P1203 12 QCNW-2060TAZZ Product unit use AD
20 TP Jig for Envelope SC3302← 10PB-B RUNTKA003WJZZ BF
confirmation
21 Main–DC Terminal_PWB P901–P2900 6 QCNW-A392WJZZ AE
No. of pins
New or
Continuation
QCNW-1274TAZZ AZ
CPWBHB195WJ01(NZ105U/NZ155U)
CPWBHB247WJ01(NZ55U) Product unit use
CPWBHB195WJ01(NZ105U/NZ155U)
CPWBHB247WJ01(NZ55U) Product unit use
CPWBHB195WJ01(NZ105U/NZ155U)
CPWBHB247WJ01(NZ55U) Product unit use
Part cord
Price
code
AU
AR
AU
AR
AU
AR
24
VL-NZ55U/NZ105U/NZ155U Service jig configuration
Direct connection
Direct connection
TURN SW UNIT
QSW-Z0376TAZZ
10
13
14
5
21
9
9
10
8
18
17
6
8
19
15
CCD PWB
SC101
SC21
LENS FPC
SC551
SC53
P51
SC2604
SC1502
SC2602P601
P52
SC1201
CPWBHB195WJ01(NZ105U/NZ155U)
CPWBHB247WJ01(NZ55U)
( , , )
P1203
P901
SC2802
J1401
SC9801
J7401
J5701
SC2001 OPERATION PWB
SC
3302
CAM HEAD PWB
SC1204 SC1202
SC2801
P2900
SC3301
SC701
SC900
BATTERY
TERMINAL UNIT
QTANZ0152TAZZ
HEAD AMP FPC
CPWBH2876TA01
P306
HEAD AMP UNIT
MECHANISM
JIG FOR ENV. OUTPUT
RUNTKA003WJZZ
LCD PANEL
LAMP
FPC
PANEL FPC
SC9802
INVERTER PWB
MAIN PWB
CARD PWB
SC1501
CARD SOCKET
DC Jack PWB
MIC UNIT
RMiCC0108TAZZ
SC2701
POWER/SNAP SW
UNIT
QSW-ZA004WJZZ
ZOOM OPERATION
SW UNIT
QSW-ZA010WJZZ
SPEAKER
VSP0020P-918N
SC2601
3
20
4
2
1
7
16
12
QCNW-2060TAZZ
QPWBHB194WJZZ
AUDIO I/O PWB
QCNW-A392WJZZ
QCNW-1832TAZZ
QCNW-1382TAZZ
or
QCNW-1274TAZZ
QPWBHB196WJZZ
QPWBHB197WJZZ
LENS UNIT
VL-NZ55U/NZ105U
VL-NZ155U
25
VL-NZ55U/NZ105U
VL-NZ155U
[TEST POINT]
(Wiring board diagram: Main Side A)
TL2800
COMMON PULSE
C2825
P1203
C2811
C2810
IC2800
C2809
C167
R158
R157
IC152
C166
R156
C156
C157
TL1269
C158
C154
C159
C153
C160
C168
L152
C161 R154 C162
TL1225
TL1224
TL1227
TL1222
TL1270
TL1203
TL1263
TL1264
TL1256
TL1260
TL1265
TL1266
TL1259
C2816
C2815
TL8828
R2823
C2824
R152 C165
TL1271
C1201
R2802
R2801
IC151
SC1201
TL1253
TL1254
D2801
R2812
R2820
TL1257
TL1258
TL1252
TL2801(C OUT)
COMMON PULSE
R2821
D2802 C2803
R2819
D2800
C2801 R2818
TL2800
Q2800
C2802
R2803
TL8827
R2814
C2813
C2806
C2814
R2824
R2822
Q2801
Q2802
R2829
C7823
C2805
C7806
C2804
R153
C3703
R3701 FL403
R3717
TL3339
C163
R155
C3704
R3705
R3706
R3707
C164
FL3702
TL1223
TL1262
R3740
R3741
C3711
R3708
Q1200
R3742
R1200 C3715
TL1267
IC3703
C2807
SC2801
R2830
R2825
C2812
L2801
L2800
L151
C155
TL3701
R3702
R3744
R3716
TL1205
TL1202
TL2826
IC2803
TL2825
C2822
R3704
TL3704
R2807
TL2824
R2853
R2852
C460
C465
Q3701
C3707
R3709
R3743
R3703
TL3702
R2815
C2800
TL2801
R2813
R2811
TL919
C2823
R2840
R2856
R2851
C2828
IC407
C463 C462 R415
IC408
R3718
C456
IC3701
R3710
R3713
C3706
TL3703
SC1204
R2859
C2830
C2831 R2862
SC701
CP2
CP1
C930
R989
R988
C971
TH2800
R2863
R2861
Q2806
Q2805
FB2801
R2858
R2857
R913
TL903
TL900
TL902
C901
D2906
SC900
R2906 R2918
TL904
TL905
TL906
Q2902
D2904
L917
Q907
C972
Q906
R5717
C970
R987
R956
R5716
L907
C938
Q903
Q905
Q909
C960
D2901
R2907
D2905
Q2901
D2903
Q2906
Q2903
C973
L916
IC5701
R982
C953
R5701
R995
C937
Q2907
R2916
R2912
R2914
R2915
C2901
R2860
R2910
C2903
TL901
D2908
R2908
R2909
Q2905
R2902
R2904
R2901
R2903
R2905
TL2902
R2917
C2902
IC2901
R5706
R5704
C5705
R5703
C5704
C5706
R1480
TL2905
TL2907
TL2906
TL997
P901
TL2904
D2902
Q2904
TL2903
TL2901
TL1471
TL1470
R1483
TL1479
R2911
R2919
VA1402
TL1472
VA1401
TL1478
FB5702
TL1479
PCO D/A-Y
J5701
FL5701
R5702
C5703
R5705
FB5701
R5715
C5702
C5701
R5709
X5701
C5707
C5708
J7401
R5708
SW901
R416
C405
R412
R411
C2826
TL3706
R406
L2803
L2802
C457
TL3705
C407
C404
R407
C2827
TL3320
C418
C421
R431
TL402
TL418
R432
C430
R418
C475
C410
TL4429
C476
FB456
C432
C414
R471
C411
TL417
R413
FB3701
C3708
C3709
C3702
TL3707
C3705
TL1217
C3701
L3701
TL1201
TL1249
TL1234
TL1236
TL1237
TL3337
TL3321
TL403
IC452
TL416
R462
TL415
TL406
TL414
IC3702
C3710
TL1246
C451
R443
C452
IC405
R446
R442
R441
C450
R440
TL3319
TL3318
TL3317
SC3301
TL3301
TL3322
TL3323
R478
D471
C419
C474
C472 C473 R477
X401
L471
TL421
C423
C415
R468
R428
R429
R435
FB408
C478
C477
R404
R405
C447 R437 R436 C435
D404 D403
C417
L403
C1604
C1603
C1617
TL1242
TL1216
TL1214
TL1238
TL1240
TL1209
TL1243
TL1210
SC1202
IC3405
R3495
C3462
R3492
R3493
TL3316
TL3315
TL3314
TL3313
TL3333
R2913
TL3324
TL3325
TL3326
TL3328
TL3331
TL3329
TL3330
R463
C401
D472
C402
C403
C425
TL420
C7400
C413
C7417
R7424
D7402
C7405
C7402
R7418
R7422
R7420
R7423
R7417
C424
C7404
C7403
C412
R414
C7413
R7403
C7414
TL405
R7402
TL404
Q7403
TL407
TL401
R409
R410
R438
R467
IC1602
C1610
TL1206
TL3332
R402
C420
R401 R403
Q7401
C991
FB7401
R7401
L7400
C7401
R7415
D7401
R7416
R7413
R7419
Q7402
L918
C982
C933
L901
L900
C1611
C1608
L1601
C1605
TL1245
TL1244
L923
L915
T900
C990
Q911
R950
R951
C992
C974
C980
R990
R996
Q908
C981
R970
Q900
R999
C932
C931
FB901
(Wiring board diagram: Main Side B)
C212
TL204
C215
TL7820
VCO free-run
TL7825(R OUT)
DAC full-scale
TL7824(G OUT)
DAC full-scale
TL7823(B OUT)
DAC full-scale
C214
TL4433
TL201
TL202
TL4434
C218
TL203
C217
C220
R246
R219
TL4439
TL207
R4415
L7800
C4417
C7800
R4401 C4427
C4404
C7826
R7828
L1401
C7824
R7831
C7804
C1401
L1431
C1431
L1450
C1458
Q1450
R1454
R1455
C1450
Q1453
C1453
R1457
L1451
R1456
C1452
L1452
C1451
R1459
R1460
C1454
Q1454
IC202
TL4438
TL4437
TL206
R4414
TL4440
R7824
R7825
C7822
R7823
C7802
C7820
D7810
C7811
R7821
C7812 R7812
TL7820
R7810
L7810
C4418
C4428
TL4403
R7811 C7810 R4451
C7809
C7801
C7805
C7808 Q4470
TL7825
C7803
TL7824
R7827
TL7823
R7830
R7826 C4408
R7829
Q1431
R7800
C7813
C7814
C7815
R1452
R1451
Q1451
Q1452
R1453
R1450
C1457
R1458
R1471
R1438
R1470
Q1434 R1440
R1461
R1463
R1465
R1464
C1403
R1467
R1462
Q1455
R1466
C1456
C1455
L1453
C201
R245
FB201
TL213
C202
TL214
TL4425
C208
C207
C210
FB204
C211
FB203
C203
TL4424
TL210
TL208
TL212
C213
TL209
R7820
C7821
TL211
D4451
R7822
R7819
X4451
C4495
C4451
R4495
R4403
C7807
R4407
C4426 C4424
R4456
IC4401
TL4428
TL4405
TL4426
TL4404
C7816
C7817
C7818
R4408
R4494 C4416 C4419
R4485 R4489
IC1431
TL1431
Q1402
R1413 R1414
C4494
C4482
R4474
R4487
Q4482
Q4483
C1439
Q1403
R3471
R3469
C1405
R4486 R4488
C4485
Q4481
C4481 C3423
C1436
R1441
C1437
C1440
R1439
R1442 C1438
C1404 R1402
IC1401
C1406
IC201
IC703
FB202
C206
C205
C4465
R4469 R4460
Q4462
R4453
R4468
L4451
R4464
C4454
R4454
C4403
C4423
D4452
C4415
C4436
R4435
R4436
Q4432
C4413
C4414
C4410
C4421
R4404 L4406
C4409
C4407
C4420
TL4406
R4478
R4476
R4477
Q4471
IC3404
R3457
R3497
C3455C3457
R3452
IC3403
R3451
C3452
C3456
C703
R771 R707 R734
Q704
Q705
C204
R733
R735
R720
R737
R729
R747
R732 R759 C718
R731
R741
R725
R738
R736
R724
C735
C732
C705
C733
TL1235
R708
TL1251
C4461
IC4461
R755
FB4461
R4466
R706
R710
C734
C4464
R4467
Q4461
TL4436
C4435
C4422
C4406
R3411 R3412 C3466
R3494
Q3405
TL3334
C3420
C3458
C3451
R3468
C3454
C4466
R4463
R730
R4462 R4461
R782
R4465 C4462
C4463
IC705
TL4400
L4471
FB4405
C4405
C4401
C3465
FL3401
FL3402
R3406
R3407
C3410
R3409
C3409
C3408
C3411
TL3406
R3436
R3435
C3430
C3429
R3480
R3491 R3490 R3481 C3474
IC3402
R3414
C3471
R3413
IC3401
C3434
C3443
C3413
C3444
C3432
R3446
R3487
R3427
TL3335
R3410
C3414
C3417
C3419
C3421
TL3401
TL3403
C3481
R3423
R3462 C3436
R3463
C3475
TL412
TL1247
TL1248
C716
C711
C713
R739
C709
C717
C704
R744
R712
R772
R723
R796
IC701
R711
R768
R702
R716
Q701
C721
R704
C702
R703
C4483
C4402
L4404
R3496
R3489
R3442
C3390
Q3406
R3401
L3401
Q3401
C3442
C3405
C3403
R3404
C3412
C3406
C3415
C3416 R3418
C3418
C3476
C3477
C3424 R3420
C3426 R3419
C3433 R3421
R3424 R3429
R3482
C3431
R3437
R3422
R3425
C3428
C3479
R3428
R3402
R3488
R3432
TH3401
R3486
R779
R749
R797
R714
C731
R743
R713
R719
Q702
C727
C701
R4402
TL912
R1717
R1726
TL3327
C3401
R1719
R1718
C3402
R3430
R3415
R3416
R3470
C3470
L3404
R750
R709
R728
R722
Q703
C724
C737
R754
R742
R717
R745
TL914
R762
IC706
R766
R761
C728
R765
R760
R764
TL799
R763
R767
C730
C726
R753
C723
R751
C719
R756
C725
R752
C720
R748 R746
X702
R705
C729
R718
L701
C712
Q1905
IC704
C1906
IC708
R780
L1702
C1728
Q1701
R1728
R1727
FL3403
C3478
R3417
C3467
R3478
R3472
R3473
R3445
R3499
R1721
Q1906
TL1908
Q1909
C1911 R1482
R1958
R1957
R1959
C706
R1956
TL1905
Q1908
TL1904
C1922
IC4701
C4701
R1720
L1701
C1711
R1700
R1701
C1705
R3454
R3479
C1706
C1707
Q3404
C1709
C1713
C1716
C3473
C1715 R1710
R1712
C1719
R1722
L3405
C1721
C1723
C1722
C963
C722
D901
D902
L920
TL918
C964
C959
C965
L913
C951
C952
C948
R1950
R1913
L902
R1914
R1931
L919
R1930
Q1911
R1929
TL1907
R1943 R1944
R1925
Q1913
R1723
R1703
R1706
R1724
C1702
C1701
IC1701
C1727
C1726
R1715
R1716
C1725
L911
C967
C962
C968
L912
L921
L914
TL917
C969
Q902
L909
L910
C939
L908
Q901
C1982
R1997
C1981
R1996
C936
TL913
R1994
C983
R1927
Q1914
R1940
R1705
R1714
R1995
C1921
R910
TL1906
TL911
R1945
R1941
R902
C902
R903
R906
C903
R907
R905
R904
R931 R930
C908
R933
R937
R936
R939
C909
R938
C4702
R935
R934
C910
C911
C912
C1708
C913
R940
R1702
C914
C1703
C915
R1704
R1707
C1704
R1708
R1709
C1710
C1712
C1714
C1717
C1718
C1720
R1990
R1991
R1713
C1724
R1989
R1969
C1980
Q904
C956
TL908
C957
R983
C949
C954
R973 C943
L905
FB900
C946
R975
C934
L903
IC1902
R1998
D900
R911
R909
R912
C925
C904
C993
C926
R914
IC900
R942
R947
C916
R946
R943
R968
C924
R941
R954
R1725
R1729
C1729
R1711
D1900
R1980
IC1901
Q910
Q1920
R726
X701
IC707
R727
TL2831
R908
R2835 R2833
C2821 C2819
TL1481
TL1482
TL1484
TL1483
C714
C738
R5711
R5710
R5712
TL1480
R7426
R7427
R7428
R7429
TL5702
TL5701
TL5703
TL5704
R1481
J1401
TL2830
TL2829
TL2832
SC2802
TL2836
TL2908
R2831
L2804
TL3338
TL3340
SC3302
TL2833
TL3341
IC2802
TL2834
TL3342
C955
C945
R977
R972
R974
R979
D703
IC901
C715
TL790
R701
C942
C941
R980
TL1909
R1999
Q1932
R1992
Q1201
R915
R917
R929
R919
C905
C927 R924
C928
R918
R920
C906
R927
R926
R962
C907
R928
R966
C921
C922
R967
C920
R953 R958
R948
C917
C919
C966
R957
R959
R960
R949
C918
R965
C923
R952
R1912
Q1921
Q1702
R1911
C1730
R1986
TL910
R1981
R1982
R1983
R1984
R1968
R1985
26
(Wiring board diagram: AIO Side B)
TL609
EE level check
Frequency character check
TL607(GND)
EE level check
Frequency character check
TL2692(INT MIC L)
EE level check
Frequency character check
TL2691(INT MIC R)
EE level check
Frequency character check
TL607
TL2674
TL2680
SC2601
TL2672
C2611
R2626
R2614
TL608
EE level check
Frequency character check
TL609
C613
TL2692
TL2691
R642 R613
C610 C609
TL2673
C2610
TL2675
C615
TL2671
R616
R615
R610
R2612
R2611
R2623
R2624
TL2682
TL2684
VL-NZ55U/NZ105U
VL-NZ155U
TL608
C639
R608
R624
C619
R614
R629
C620
R641 R609
C617
R619 R617
C612
C614
R643
R612
TL605
C616
TL606
R611
R618
C634
C627
C631
R628
C624 C622
R627 R620
R623 R625
C628
IC601
R626
C623
TL2643
R630
C637
R631
R632
C633
C636
C629
TL2644
C625
C626
R638
C621
SC2602
TL2659
R621
TL2645
C642
TL2662
TL2646
TL2687
TL2689
TL2688
TL2667
TL2642
R640
TL2686
TL2690
R622
TL2676
TL2655
TL2663
TL2669
TL2683
TL2654
TL2653
TL2652
TL2648
0
TL2647
Q602
C606
C605
R601
C602
R602
C603
R644
TL603
TL602
TL604
TL2685
TL2681
TL2679
TL2678
TL2677
TL601
C601
FB602
27
VL-NZ55U/NZ105U
VL-NZ155U
[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
When replacing the IC705 E2PROM, first make the following settings and then start the adjustments.
• Electromagnetic conversion
Address 27 28 2B *105 25 26
Data 40 90 90 80 40 90
* The address uses only when replacing the IC302.
<The setting of only VL-NZ155U.>
• Set the unit to the CAM_ADJ mode and set the data for following address.
Address 76D 76E 76F 770 771 772 773 774
Data 4E 5A 31 35 35 20 20 20
* As for the setting method, change VCR in "Manual adjustment" below to CAM.
1. Model code 2. Destination code 3. Specification code 4. Menu selection code 5. Software switching code 6. Calender switching
NZ155U
NZ105U
NZ55U 01 FE NZ55U 37 C8
08 F7 01 FE
05 FA
NZ155U
NZ105U
15 EA 00 FF 00 FF 02 FD
15 EA
• Adjustment with automatic machine
Mode VCR ADJ mode
Procedure 1) Using the 12 command, set the VCR adjustment mode.
2
2) Using the 20 command, give the E
PROM write permission.
3) Set the system code with the 22 command for each type.
4) Using the command, set write inhibition.
5) Using the command, cancel the adjustment mode.
Examples • During E2PROM (IC705) replacement.
• Manual adjustment
Mode VCR ADJ mode
Procedure 1) Set the CAM/OFF/CAM selection switch to CAM.
2) Press “CONTINUE” → ”CAM adjustment” on the remote controller to set the CAM adjustment mode.
(At this time an indication “CAM 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 CAM adjustment mode.
7) Set the CAM/OFF/CAM selection switch to OFF.
Examples • During E
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 E
2
PROM replacement (IC302 inside the head amplifier circuit board).
28
VL-NZ55U/NZ105U
VL-NZ155U
3. SHUT OFF adjustment
Mode VCR ADJ mode
Procedure 1) Load a recordable tape, and set the camera mode. (Set TL911 to GND or SW901 to ON.)
Press the "CONTINUE" and then the "TEST SEL" on the remote control for adjustment to enter the TEST mode (T-01 blinks).
2)
3) Select T-03 with the FF or REW key and then press the PB key.
4) Observing the power voltage from TL2905(-), set it so that TL904(+) obtains 5.95V ± 50mV.
5) Press the MENU button on the main unit. Turn off the power and the adjustment is completed.
2
Examples • During microcomputer (IC701) , REGULATOR (IC704) or E
PROM (IC705) replacement.
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 E2PROM replacement. • During circuit board (Main) replacement.
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.)
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) ON/OFF does a power source.
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-NZ55U/NZ105U
5
VL-NZ155U
ADJUSTING THE VIDEO I/O CIRCUIT SYSTEM
(Wiring board diagram: Main Side A)
R2914
FB2801
R2858
R2857
R913
TL903
TL900
TL902
C901
D2906
R2906 R2918
Q907
SC900
TL904
TL905
TL906
Q2902
D2904
D2901
R2907
D2905
Q2901
D2903
Q2906
Q2903
C973
L916
R2913
CP2
CP1
C930
C990
Q911
R950
R951
C992
L917
C974
C980
R990
R996
R989
R988
C971
Q908
1. PCO D/A-Y adjustment
Test point TL1479 (connected to oscilloscope) Address VCR ADJ 566/567
Mode VCR STOP mode
Procedure 1) Connect the AVS cable and then connect it to the monitor (TO).
2) Call the adjustment mode (V-ADJ).
3) Set the address to "566", and call the date.
(100% white signal is output.)
4) Vary the data with the FF and REW keys to set the signal appearing at TL1479 to 1.0Vp-p ± 0.05Vp-p.
5) Write a value subtracting -6h from the adjustment data of the address 566h in the address 567h.
R2915
C2901
R2860
R2910
C2903
TL901
D2908
R2908
R2909
Q2905
R2902
R2904
R2901
R2903
R2905
TL2902
R2917
C2902
IC2901
R5706
R5704
C57
R5C
R1480
TL2905
TL2907
TL2906
TL997
P901
TL2904
D2902
Q2904
TL2903
TL2901
TL1471
TL1470
R1483
TL1479
R2911
R2919
VA1402
TL1472
VA1401
TL1478
FB5702
TL1479
PCO D/A-Y
J5701
FL5701
1.0±0.05
Examples • During E2PROM(IC705) replacement. • During IC4401 replacement. • During IC1401 replacement.
30
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