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VL-Z1S/W/X
VL-Z1E/H/R
SERVICE MANUAL
S72M7VL-MC500
1st Edition
LIQUID CRYSTAL DISPLAY CAMCORDER PAL
VL-Z1S/W/X
MODELS VL-Z1E/H/R
In the interests of user-safety (Required by safety regula-
tions in some countries) the set should be restored to its
original condition and only parts identical to those specified
be used.
CONTENTS
Page
1. SPECIFICATIONS .............................................................................................................................. 2
2. PART NAMES .................................................................................................................................... 3
3. DISASSEMBLY OF THE SET ............................................................................................................ 4
4. MECHANISM ADJUSTMENT JIGS AND PARTS .............................................................................. 8
5. INSPECTION AND MAINTENANCE
ITEMS AND INTERVALS ................................................................................................................... 9
6. ADJUSTING AND CHECKING OF MECHANISM ........................................................................... 10
7. ADJUSTMENT OF RUNNING SYSTEM .......................................................................................... 13
8. ASSEMBLING OF MECHANISM SECTION AND PART REPLACEMENT
(DISASSEMBLING AND ASSEMBLING) ........................................................................................... 15
9. METHOD OF ADJUSTING THE ELECTRIC CIRCUIT .................................................................... 25
10.USEFUL TIPS ................................................................................................................................... 44
11.SIGNAL FLOW DIAGRAMS ............................................................................................................. 45
12.BLOCK DIAGRAMS ......................................................................................................................... 48
13.SCHEMATIC DIAGRAMS ................................................................................................................ 54
14.SEMICONDUCTOR LEAD IDENTIFICATION ............................................................................... 118
15.PRINTED WIRING BOARD ASSEMBLIES .................................................................................... 120
16.REPLACEMENT PARTS LIST ....................................................................................................... 137
17.PACKING OF THE SET ................................................................................................................. 157
SHARP CORPORATION
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VL-Z1S/W/X
VL-Z1E/H/R
1. SPECIFICATIONS
Signal System: PAL standard
Recording System: 2 rotary heads, helical scanning system
Cassette: Digital VCR Mini DV video cassette
Recording/Playback Time: 90 minutes (DVM60, LP mode)
Tape Speed: SP mode: 18.831mm/second
LP mode: 12.568 mm/second
Pickup Device: 1/ " (6.4 mm, effective size: 4.5 mm) CCD image sensor
4
(with approx. 8,000,000 pixels including optical black,
effective pixels: approx. 414,000 pixels)
Lens: 10 × optical zoom lens (F1.8, f=3.8-38.0 mm)
Lens Filter Diameter: 30 mm
Monitor: 2.5" (6.4 cm) CGSilicon
Built-in Microphone: Electret monaural microphone
Color Temperature Compensation: Auto white balance with white balance lock
Minimum Illumination: 2 lux* (with gain-up, F1.8)
Power Requirement: DC 7.4 V
Power Consumption: 3.6 W (during camera recording in Camera mode using the viewfinder in Full Auto
mode with the DIS function on)
4.2 W (during camera recording in Camera mode using the LCD monitor in Full
Auto mode with the DIS function on and backlight in normal mode)
Operating Temperature: 0°C to +40°C
Operating Humidity: 30% to 80%
Storage Temperature: 20°C to +60°C
Dimensions (approx.): 82.8 mm (W) × 82.2mm (H) × 101.5 mm (D)
Weight (approx.): 475 g
(without battery pack, lithium battery, video cassette and lens cap)
AC Adapter (UADP-A016TAZZ)
Power Requirement: AC 110-240 V, 50/60 Hz
DC Output: 10 V
Dimensions (approx.): 49.0 mm (W) × 27.5 mm (H) × 79.0 mm (D)
Weight (approx.): 125 g
Specifications are subject to change without notice.
*Minimum illumination: Since there is no widely accepted testing procedure for determining minimum illumination
capability, lux ratings are comparable only between models from the same manufacturer.
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2. PART NAMES
Front view
Operation button
Zoom lens
DISPLAY button
Monaural microphone LCD LAMP button
Left view Right view
Window cleaning cover Power Zoom Wide angle/
Telephoto control/
PHOTO button VOLume control
Viewfinder
STANDBY indicator
STANDBY button
LCD monitor POWER/CHARGE
(RED) indicator
Speaker
DC IN jack DC IN jack cover
AV terminal
Terminal cover Start/Stop button
DV terminal Hand strap
Power switch ( Camera
Recording mode/ Playback
mode select switch)
Cassette holder
Lithium battery cover
Diopter adjustment dial Cassette compartment
door release
Tripod socket*
Battery release
* When attaching a tripod
with a guide pin, do not
Cassette compartment door
attach the pin to the bottom
of the camcorder.
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3. DISASSEMBLY OF THE SET
3-1. Procedure for disassembling the cabinet
Note:
Before removing the cabinet, turn OFF the power and make sure that the battery is not connected.
1.
· Remove the lens hood and remove the screw ((s) XiPSF14P06000).
LCD panel
· Open the LCD panel 90 degrees and remove the two screws ((x)LX-
HZ0050TAFN).
· Remove the two screws ((c)XiPSN17P04000) and remove the KS x
camera front cover by pulling it frontward. x
s
c
Lens hood
c
KS camera front cover
2.
· Disconnect the connector of the KS camera front cover.
· Disconnect the two LCD tilt FPCs of the liquid crystal panel. r
r LCD panel
· Remove the two screws ((r) XiPSN20P08000) and remove the LCD
panel.
· Remove the screw ((p) LX-HZ0063TAFN) and screw ((q)
XiPSN17P06000) that hold the camera L cabinet, open the terminal q
p
cover and remove the three screws ((b) XiPSN17P03000). Camera L cabinet
b
b Terminal cover
LCD tilt FPC
b
Connector
KS camera front cover
3.
· Disconnect the hot shoe FPC of the hot shoe and remove the
camera L cabinet.
· Remove the screw ((c) XiPSN17P04000) and remove the KS
camera bottom cover.
· Remove the two screws ((a) XiPSN17P02000) and remove the LCD
tilt reinforcing fitting. Camera L cabinet
Hot shoe FPC
a
a
KS camera bottom cover
LCD tilt reinforcing fitting c
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4. 6.
b
b
Mechanism reversion detection PWB unit
x
VF
Camera top cover
u
u u
Connector PWB mounting angle
Camera unit p
FPC(3)
b
a
FPC(2)
FPC(1)
· Remove the screw ((x) LX-HZ0050TAFN), screw ((p) LX- · Remove the screw ((b) XiPSN17P03000) and remove the
HZ0063TAFN) and screw ((a) XiPSN17P02000), disconnect Mechanism reversion detection PWB unit.
the FPC (1) and remove the camera top cover. · Remove the three screws ((u) LX-BZ0221TAFC) and remove
· Remove the screw ((b) XiPSN17P03000) from the camera the PWB mounting angle.
unit, disconnect the FPC (2) and remove the camera unit.
· Remove the screw ((b) XiPSN17P03000), disconnect the
connector and FPC (3) and remove the VF.
5. x
7.
Sub PWB unit
b
LCD tilt unit assembly
Radiating angle
b
b
b
Terminal cabinet
b
a
Main PWB unit
b
x
· Turn the LCD tilt unit assembly 90 degrees.
PWB mounting angle
· Remove the three screws ((b) XiPSN17P03000).
· Remove the screw ((a) XiPSN17P02000).
x
Connector Tilt FPC
· Disconnect the two connectors of the sub PWB unit and main
PWB unit.
· Remove the two screws ((b) XiPSN17P03000) from the
radiating angle, remove the screw ((b) XiPSN17P03000)
from the PWB unit and remove each unit.
· Disconnect the two FFCs of the main PWB unit.
· Remove the two screws ((x) LX-HZ0050TAFN), remove the
screw ((x) LX-HZ0050TAFN) form the PWB mounting angle
and remove the terminal cabinet.
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3-2. Procedure for disassembling the cabinet
1.
· Remove the three screws ((e) XiPSF17P03000) , remove the screw
((d) XiPSF17P02000) and remove the VTR bottom cover.
e
e
d
VTR bottom cover e
2.
· Remove the two screws ((e) XiPSF17P03000) and remove the tilt e
cover.
· Remove the VTR front cover with the cassette cover opened. e
· Disconnect the connector and two tilt FPCs, remove the three screws Tilt cover
((h) LX-BZ0220TAFC) and remove the KS camera tilt.
h h
h
How to remove the VTR front cover
1. Remove the two couplings and turn the VTR front cover about 20 degrees in
the direction indicated by (1). KS camera unit
2. Turn the VTR front while sliding it in the direction indicated by (2) to disengage
the internal lug.
* If the VTR front cover is removed by turning it forcedly in the direction indicated
by (1), the internal lug may be damaged.
1
Tilt FPC
If the VTR front cover is removed Connector
only by turning it in the direction
indicated
The internal lug
may be damaged
VTR front cover
2
3.
· Remove the screw ((f) XiPSF17P04000) with the cassette lid opened, KS VTR operating cover
disconnect the operation PWB FFC and remove the KS VTR operating
cover.
f
Operating PWB FFC
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4.
· Disconnect the six FPCs of the head amp circuit board
unit. Mechanism
· Remove the two screws ((a) XiPSN17P02000) and
remove the head amp PWB unit. w w
· Remove the three screws ((w) LX-BZA022WJFN) and k
remove the screw ((k) LX-BZA023WJFD).
· Remove the mechanism with the cassette lid opened. w
a
FPC
Head amp PWB unit a
5. x
· Remove the screw ((x) LX-HZ0050TAFN).
· Remove the two screws ((d) XiPSF17P02000) and remove the cassette
lid.
Cassette lid
d
d
6.
· Remove the two screws ((d) XiPSF17P02000). KS upper lid cover
· Disconnect the connector of the speaker while removing the KS upper
lid cover with the cassette control lid opened. d Lock support cover
· Remove the screw ((d) XiPSF17P02000) and remove the lock support
cover.
· Remove the speaker.
d
d
Connector
Speaker
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VL-ZE/H/R Sketch
1. Name
4. MECHANISM ADJUSTING JIGS AND PARTS 2. Part code
3. Code
4-1. Mechanism checking and adjusting jigs * Model number and usage
1. Cassette torque 1. Torque gauge 1. Torque gauge head 1. Tension gauge 4N 1. Dial tension gauge
meter for PB 2. JiGTG0045 2. 9EQTGH-DH5000 2. JiGSG0400 2. 9DAPTG-10-10W
2. 9DASD-1015 3. CN 3. BW 3. BK 3. CA
3. DB * For measurement of VS- * For torque gauge shown * For measurement of * PTG-10
* 1mN·m/1.5mN·m REW winding torque left pinch roller press force
* For adjustment of guide
roller
50 or more
ø2 * Bit shape (see figure below)
No.0 Phillips bit
No.00 Phillips bit
Tolerance ± 0.1
1. Torque driver 1. Master plane 1. Height adjustment jig 1. Driver for height
150mN·m 2. 9EQMP-VLPD1 2. 9DAHG-PD1 adjustment 2
2. JiGTD1500RTDH 3. CL 3. BZ 2. 9EQDRiVER-DH5 1.4
3. CB * For checking of * For height adjustment 3. BC Tip thickness 0.5
3
height of reel table
(1) Vernier calipers
(2) Precision screwdriver
1. Bit for hexagon nut (Phillips head and slot-
1. Alignment tape (I) 1. Alignment tape (II) with opposite side ted)
2. VR3-GAZXS 2. VR3-GTZQS distance of 3 mm (3) Long-nose pliers
3. CF 3. CG 2. 95CM22001 (with thin tips)
* Adjustment of running * For adjustment of SW (4) Tweezers
3. BL
system point(Color bar signal) * For installation of Tu
(Linear signal) * 90ADVC-TAPE available guide nut
1. Name
2. Part code
3. Code
4-2. Parts for periodic inspection and maintenance * Model number and usage
1. Oil 1. Cleaning paper 1. Dry grease CFD-409Z 1. Cleaning liquid
Cosmo Hydro HV22 2. JiGDUSPER * Sankei Chemical Co., LTD. Industrial ethyl alcohol
2. 9EQ-OiL-HV22 3. AP * Commercial item
3. AE * DUSPER (SIGMA) 1. Grease 1. Loctite adhesive (1401B)
(Ozu Co., LTD.) Molykote YM-103
* Cosmo Oil Co., Ltd. * Three Bond
2. 99FGREASEYM103
1. Ultrathin cotton swab
* Dow Corning
* Commercial item
(1) Reel hub for back tension measurement (Fig.1) 2) Tie both ends together to loop the thread.
1) Have the reel hub of a commercially available cassette
tape ready.(Disassemble the cassette tape and remove
Weight
the tape from the reel hub.)
2) Attach one end of a thread (having a length of about Reel hub Thread
20cm) to the reel hub using Scotch tape etc.
3) Attach a weight of about 0.21N to the top face of the reel hub.
(2) Thread for pinch roller press force measurement Thread
1) Have a commercially available thread having a length of Fig. 2
Fig. 1
about 20cm ready.
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5. INSPECTION AND MAINTENANCE ITEMS AND INTERVALS
In order to maintain the quality of the mechanism section, perform the following maintenance and inspection. After repairing the
mechanism section, perform the following maintenance regardless of the number of hours of use by the user.
5-1. Maintenance and inspection list · · · Replace. · · · Clean. · · · Lubricate. · · · Check.
Inspection and Number of hours of use (h) Symptoms observed at the
Notes and remarks
maintenance location 500 1,000 1,500 2,000 3,000 time of maintenance
Tape running section (See7-3.) · Block noise Note:
Running system
Drum section, Video head · Clogging of head If no envelope output is obtained
(See 7-3.) · Damage to tape in spite of the video head being
cleaned, replace the drum
· Replace if abnormal rotation or swing (large) is found. component.
(If the envelope output is normal,
· Cleans the portions that come in contact with the tape (the lower refer to "10. USEFUL TIPS".)
drum helical portion in particular). Use the specified cleaning liquid.
Pinch roller · Tape not running · Replace if any abnormal
· Tape sagged condition is found.
Capstan motor (Timing belt) · Block noise
Swing arm · Abnormal noise
S reel table, Tu reel table
Driving system
Center gear boss · Abnormal noise · Apply oil.
Relay pulley shaft [Oil]
Cosmo Hydro HV22
Note: Apply oil to the shaft and
lightly wipe it off with a cloth.
Loading motor · Ejecting cannot be made. · Replace if any abnormal
Mode SW · Mode cannot be set. condition (noise etc.) is found.
Performance check
Abnormal noise · Tape not running · If a part is out of spec, replace
· Tape sagged it.
PB and VS/R winding torque · Damage to tape
PB, VS/R and loading back tension · Abnomaly in reproduced
S reel table unloaded torque picture
[Oil] Cosmo Hydro HV22 [Loctite adhesive] Three Bond 1401B
[Grease] Molykote YM-103 [Cleaning liquid] Industrial ethyl alcohol
Sankei Chemical CFD-409Z
Oil
5-2. Cautions in handling the mechanism
(1) Cut washers removed at the time of part replacement etc. should be
replaced with new ones without fail.
(2) Because no volume adjustment is available in this mechanism, cleaning or Ø1.5 or less
part replacement should be performed if the setting is not satisfied.
(3) About oil Fig. 1
a) Be sure to use the specified oil. (If any oil other than the specified oil is
used, various troubles will occur.)
b) When lubricating the bearing, be sure to oil free from foreign particles
such as dust. (If oil in which foreign particles such as dust are mixed is
used, it will cause wear and seizure to the bearing.)
c) The term "One drop of oil" here means the amount of oil on the point of
a needle etc. shown in Fig.1.
(4) Repairing of circuits, final adjustment of running system, etc. should be
performed with the cassette controller assembly installed in the mechanism.
(5) When operating the mechanism singly, apply voltage to the loading motor
to drive it. The voltage between the terminals should be 3 to 4V DC. (Do
not apply external voltage to the loading motor with the mechanism
connected with the main circuit board. Doing so could cause a failure.)
(Turning the gears forcedly by hand may cause them to get damaged.)
When placing the mechanism singly, use an appropriate spacer so that the
capstan motor is not rubbed.
(6) When installing the cassette controller, push the portion indicated by "A" in
Fig.2. Do not push other portions.
(7) Take care not to deform the components of the mechanism.
Fig. 2
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6. ADJUSTING AND CHECKING OF MECHANISM
The items described here are relevant to the general on-site servicing (field service). This section does not cover adjustment and
replacement for which sophisticated equipment, jigs and techniques are required.
In order to maintain the initial characteristics of the mechanism, it is necessary to perform maintenance and inspection and also it is
essential not to damage the tape etc. In the case of an adjustment that requires a jig, be sure to use the specified jig.
(1) When adjusting and checking the mechanism, be sure to see that the power supply and the status are as indicated in
Caution on the title.
(2) Do not apply external voltage to the loading motor with the mechanism connected with the main circuit board. (Doing
so could cause a failure.)
(3) When running the tape, be sure to do so with the cassette controller assembly installed.
6-1. Checking of PB (REC) winding torque
AC adapter used, Cassette controller assembly installed
(1) Set the torque cassette with the cassette controller installed in the mechanism. In the SP record mode (or in the PB mode
if signals have been SP-recorded on the tape), check that the winding torque is within spec.
(If there is a torque ripple, read the center value.)
0.7+0.2/-0.05N·m, Ripple: 0.1mN·m or less
6-2. Checking of VS-REW winding torque
AC adapter used, Cassette controller assembly not installed (Mechanism only)
(1) Remove the cassette controller, turn ON the down SW while referring to 8-3, operate
in the test mode (T01) and select the VS-REW mode.
(2) Set the torque gauge in the S reel table, push the tip of the tension pole with your finger
in the direction shown by Arrow A to release the tension band, and check that the
winding torque is within spec. (Fig.1) (Do not apply the own weight of the torque
gauge or rotate it during measurement.)
Fig.1 How to release the tension
(If there is a torque ripple, read the center value.) band when measuring the
1.5 ± 0.15N·m, Ripple: 0.15mN·m or less VS-REW winding torque
(3) After checking the winding torque, remove the torque gauge and turn OFF the down
SW. The mechanism will automatically go into the standby mode.
6-3. Checking of height of reel table
3 to 4V DC, Cassette controller assembly not installed (Mechanism only)
(1) Remove the cassette controller. (Refer to 8-2.)
(2) Apply 3 to 4V DC to the loading motor while referring to 8-1 and select the
PB mode.
(3) Fit the holes of the master plane to the two guides (portions A and B) shown
in the Fig.2, taking great care not to allow master plane to strike the running
parts such as the drum and guide roller or the MIC contact.
(4) Using a pair of vernier calipers etc., measure the heights of the reel-supporting
faces of the S reel table and Tu reel table from the top face of the master plane
and check that the measured heights satisfy the set values. (Fig.3)
A B
When measuring the height of the S reel table, push the tip of the tension
pole with your finger in the direction shown by Arrow A to release the tension
band. (Fig.1)
(5) If the measured height does not satisfy the set value, replace the reel table
and make checking again. MIC contact
After replacement, select the L start mode (see 9-1) and check that the
Fig.2 Checking of reel table
reel table rotates smoothly.
Set value of height
Set value of height
Reel-supporting face
of reel table
of reel table
Fig.3
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6-4. Checking and adjusting of tension pole position during Tension pole position
(Based on drum base outside shape)
REC (PB)
3 to 4V DC, Cassette controller assembly not installed (Mechanism only) 0±0.3
Drum base
(1) Checking
T pole
Check that the tension pole is located in the prescribed position as shown in Fig.4
at the start of a 60-minute tape.
If the tension pole is not located in the prescribed position, take out the tape and
make adjustment according to the procedure shown below.
(2) Adjusting (See Fig.4.)
1. Select the PB mode without setting a tape. T band adjustment
base 2
2. Slightly loosen the screw 1 (to such an extent that the T band adjustment base
2 can be moved.) Screw 1
3. If the tension pole is dislocated inward from the prescribed position, shift the
T band adjustment base 2 in the direction shown by Arrow (A). If it is dislocated
outward from the prescribed position, shift the T band adjustment base 2 in the
direction shown by Arrow (B). Then fix the T band adjustment base 2 with the Fig.4 Adjusting of position (tape exists)
screw 1.
(For how much the T band adjustment base is to be shifted, refer to Fig.4.)
4. Check the tension pole position as described in "(1) Checking" above.
5. If out of position, make readjustment.
6-5. Checking and adjusting of REC (PB) back tension
torque
AC adapter used, Cassette controller assembly installed
(1) Checking
Set the torque cassette (SD-1015). In the SP record mode (or in the PB mode if Screw 3
signals have been SP-recorded on the tape), check that the feed-side torque is
within the following spec.
(If there is a torque ripple, read the center value.)
0.55 ± 0.05N·m
(2) Adjusting (See Fig.5.)
If the measured back tension torque is out of spec, make adjustment according
Apply loctite
to the following procedure. adhesive.
1. Slightly loosen the screw 3. T-SPR adjustment ANG4
2. If the back tension is higher, shift the T-SPR adjustment ANG in the direction
shown by Arrow (D). If it is lower, shift the T-SPR adjustment ANG in the Fig.5 Checking (tape exists)
direction shown by Arrow (C).
3. After adjusting the back tension torque, fix the T-SPR adjustment ANG with the
screw 3. Apply loctite adhesive to screw 3.
Screw tightening torque: 0.04 N·m
6-6. Checking of S reel table unloaded torque
3 to 4V DC, Cassette controller assembly not installed (Mechanism only)
(1) Remove the cassette controller assembly, apply 3 to 4V DC to the loading motor
and select the L start mode. (See 8-1.)
(2) Move the swing arm to the Tu reel table side. At this time, take care not to damage
the gears etc. (See Fig.6.)
(3) Set the reel hub for back tension measurement on the S reel table.
(4) Using the dial tension gauge, pull the thread of the reel hub in the direction shown
by Arrow A and check that the tension is within spec.
(If the tension fluctuates, read the center value.)
10mN or less
A Move the swing arm to
the Tu reel table side.
Fig.6 How to measure the S reel table unloaded torque
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6-7. Checking of loading back tension
3 to 4V DC, Cassette controller assembly not installed (Mechanism only)
(1) Apply 3 to 4V DC to the loading motor and select the L start mode. (See 8-1.)
(2) Move the swing arm to the S reel table side. At this time, take care not to damage
the gears etc. (See Fig.7.)
(3) Set the reel hub for back tension measurement on the Tu reel table.
(4) Using the dial tension gauge, pull the thread of the reel hub in the direction shown
by Arrow A and check that the tension is within spec.
(If the tension fluctuates, read the center value.)
27.5 ± 7.5mN
6-8. Checking of VS-REW back tension
3 to 4V DC, Cassette controller assembly not installed (Mechanism only)
(1) Apply 3 to 4V DC to the loading motor and select the VS-REW mode. (See 8-1.)
(2) Move the swing arm to the S reel table side. At this time, take care not to damage
the gears etc. Move the swing arm
A
to the S reel table
(3) Set the torque gauge in the Tu reel table. side.
(4) While turning the torque gauge counterclockwise (one turn in three seconds),
check that the torque is within spec.
(If the tension fluctuates, read the center value.) Fig.7 How to measure the loading back tension
0.8+0.2/-0.05mN·m
6-9. Checking of pinch roller press force
3V DC, Cassette controller assembly not installed (Mechanism only)
(1) Hook the thread for pinch roller press force measurement over the pinch lever (position A in Fig.8).
(2) Put the mechanism into the PB mode to press the pinch roller against the capstan shaft.
(3) Hook the thread for pinch roller press force measurement over the tension gauge and pull the tension gauge in the direction shown
by Arrow B in Fig.10 so that the pinch roller is slightly separated from the capstan shaft.
(4) Return the pinch roller gradually and read the value indicated when the pinch roller comes in parallel contact with the capstan shaft
(see Fig.9). Check that the read value is within the following spec.
1.8+0.4/-0.4N
After measuring the press force of the pinch roller, promptly exit from the PB mode to separate the pinch roller from the capstan
shaft. (If the pinch roller is left pressed against the capstan shaft for a long time, the pinch roller will be deformed.)
Capstan shaft
Pinch roller
A
OK NG
Fig.8 Fig.9
Right guide
Fig.10
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7. ADJUSTMENT OF RUNNING SYSTEM
7-1. Outline of adjustment of running system
(Replacement parts)
· Tu guide and arm Readjustment of height
· Slide chassis
Preparations for
Coarse adjustment Final adjustment
adjustment of
Installation of of Running system of Running system
(Replacement parts other Running system
cassette controller Adjusting Adjusting
than above) Adjusting
procedure(7-4) procedure(7-5)
· Pole base procedure(7-3)
· Guide roller Presetting of height not
· Drum assembly necessary
· Cap motor, etc.
7-2. Adjustment of height of running system
· After replacement of the Tu guide and slide chassis, adjust the height of the Tu guide using the height adjustment jig.
· If wrinkles are found in the tape, turn the Tu guide to remove them.
(For further details, refer to "Coarse adjustment of running system".)
· After adjusting the Tu guide height, apply screw loctite at the tip of the shaft.
Height
adjustment jig
View A
Tu guide
Bottom edge
Apply it in this direction.
View A
Master plane
Align the top face of the lower flange of the Tu
guide with the bottom edge of the height
adjustment jig.
After adjusting the height, turn the head
Height clockwise 180 degrees.
Master plane adjustment jig
7-3. Preparations for adjustment of running system
Measuring instrument and Jig : Oscilloscope, Adjustment remote control, Height adjustment screwdriver, Alignment tapes (for
adjustment of running system and adjustment of SW point), Master plane, Height adjustment jig
(1) Clean the surfaces that come in contact with the tape. (Clean
well the drum surface and the lower drum helical surface in Sup guide roller Tu guide roller
particular.) S guide Drum Tu guide
(2) Install the cassette controller.
(3) Connect the oscilloscope to each TP of the joint circuit board. Tension pole
(4) Turn ON the power of the AC adapter. Capstan shaft
(5) Select TEST mode T-05 with the adjustment remote control.
(6) Play back the alignment tape for running system adjustment
and check that the tape is moving in the SP mode.
Pinch roller
(7) While observing the PB envelope on the oscilloscope, adjust
the running system so that the envelope becomes flat in Reel
states of [+1/4 shift] and [-1/4 shift].
(Each time the PB key is pressed, the shift amount changes
as shown below.)
+1/4 shift - Normal - -1/4 shift - Normal
13
VL-Z1S/W/X
VL-ZE/H/R
7-4. Coarse adjustment of running system
(Cassette controller installed)
1. Adjustment of height of Su and Tu guide rollers
Inlet side Outlet side
NG NG
(1) Play back the alignment tape for running system
adjustment and make adjustment so that the inlet ±1/4 shift Normal ±1/4 shift
and outlet sides of the envelope become flat.
(2) In states of [+1/4 shift] and [-1/4 shift], make
adjustment in the same manner as described in (1)
above.
2. Checking of V/SR envelope waveform
(1) In the V/SR mode, check that the envelope waveform
is shaped uniformly.
(2) If the envelope waveform is not shaped uniformly, B
A
fine-adjust the guide roller and Tu guide.
Make adjustment so that A B.
3. Checking for wrinkles in tape Tu guide
Wrinkle
Pinch roller
(1) In the PB mode and V/SR mode, check the tape for
distortion between the Tu guide and the pinch roller. Distortion
- If wrinkles are found, make adjustment within a Distortion
range of ±180 degrees.
- After making adjustment, apply loctite adhesive to
the tip of the shaft.
4. Checking of envelope waveform rise time
(1) Check the envelope waveform rise time in switching from the V/SR mode to the PB mode. - 5 seconds or less
(2) Check the envelope waveform rise time in switching from the STOP mode to the PB mode. - 5 seconds or less
7-5. Final adjustment of running system
(Cassette controller installed)
1. Adjustment of height of Sup and Tu guide rollers
(1) If the ratio of MIN to MAN of the envelope waveform is less
than 60%, adjust the height of the guide roller again. (See
Fig.1.)
(2) Perform unloading and then loading again, select the PB
mode and check that there are no significant changes in
the envelope waveform. Fig.1
2. Adjustment of PB SWP
(1) Play back the alignment tape for SW point adjustment.
(2) Using the adjustment remote control, make SWP automatic adjustment.
(3) Check that an OK is given as a result of self-judgment. In the case of a NG, adjust the GR height again.
* After replacement of the mechanism and drum, adjust the phase and equalizer using the adjustment remote control.
(Refer to "9. ADJUSTING THE ELECTRICAL CIRCUITS".)
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VL-Z1S/W/X
VL-ZE/H/R
8. ASSEMBLING OF MECHANISM SECTION AND PART REPLACEMENT
(DISASSEMBLING AND ASSEMBLING)
This section describes the method of assembling the mechanism section and the method of part replacement.
For how to remove the cabinet etc., refer to "4. DISASSEMBLY OF THE SET".
1. Cut washers removed at the time of part replacement etc. should be replaced with new ones without fail.
2. When assembling the mechanism, take care to prevent screws, washers and foreign matter from getting into it. If such things
get into the mechanism, it will cause the mechanism to malfunction.
3. Be sure to use the specified cleaning liquid, oil, grease and loctite adhesive shown below. Failure to do so will cause the
mechanism to malfunction.
Oil: Cosmo Hydro HV22 (Cosmo Oil) Loctite adhesive: 1401B (Three Bond)
Grease: Molykote YM-103 (Dow Corning), Suncall CFD-409Z (Sankei Chemical Co., LTD.)
Cleaning liquid: Industrial ethyl alcohol
8-1. Mechanism mode
To operate the mechanism singly, apply 3 to 4V DC to the loading motor.
(Do not apply external voltage to the loading motor with the mechanism connected with the main circuit board. Doing so could cause a failure.)
(1) Ejection mode (2) Standby mode
This mode is used to take out a cassette. In this mode, the This mode is used to set a cassette. In this mode, the slide
ejection lever is shifted farthest in the direction shown by chassis is farthest away from the drum and the ejection lever
Arrow A. (In this mode, the cassette controller assembly is turned (the cassette controller assembly can be locked).
cannot be locked.) (The tip of the ejection lever is hidden behind the main chassis
and the moving part of the down SW is visible.)
Ejection lever Down SW
(moving part)
Back view Back view
Main chassis Ejection lever