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.
Note: Before removing the cabinet, turn OFF the power and make sure that the battery is not connected.
1.
· Remove the screw ((s) XiPSF14P06000).
· Open the LCD panel 90 degrees and remove the two screws ((x) LXHZ0050TAFN).
· Remove the two screws ((c) XiPSN17P04000) and remove the
camera front cover by pulling it frontward.
s
LCD panel
c
Camera front cover
x
x
c
2.
· Disconnect the connector of the camera front cover.
· Disconnect the two LCD tilt FPCs of the 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 cover and remove the three
screws ((b) XiPSN17P03000).
LCD tilt FPC
Camera front cover
VL-Z700/Z800VL-Z900/Z950
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 camera bottom
cover.
· Disconnect the INNER LED FPC or strobe FPC, remove the two screws ((a)
XiPSN17P02000) and remove the INNER LED Unit or strobe unit.
r
r
b
p
Connector
LCD panel
q
b
Camera L cabinet
Terminal cover
b
å Precautions in servicing the strobe unit
Once put in the card mode, the main condenser of the strobe unit stays still
electrically charged. If touching the strobe unit or its nearby parts, you may
get an electric shock.
To avoid this, connect a 7 kΩ resistor (300-V withstand voltage) across the
main condenser for about 10 seconds. The condenser will be discharged.
· Remove the screw ((x) LX-HZ0050TAFN), screw ((p) LXHZ0063TAFN) and screw ((a) XiPSN17P02000), disconnect
the FPC (1) and remove the camera top cover.
· Remove the screw ((b) XiPSN17P03000) from the camera
unit, disconnect the FPC (2) and remove the camera unit.
· Remove the screw ((b) XiPSN17P03000), disconnect the
FPC (3) and remove the VF.
VF
FPC(3)
FPC(1)
6.
b
Mechanism reversion detection PWB unit
u
u
u
PWB mounting angle
· Remove the screw ((b) XiPSN17P03000) and remove the
Mechanism reversion detection PWB unit.
· Remove the three screws ((u) LX-BZ0221TAFC) and remove
the PWB mounting angle.
5.
Sub PWB unit
Heat release angle
b
b
Connector
x
b
Terminal cabinet
Main PWB unit
x
PWB mounting angle
x
Tilt FPC
· Disconnect the two connectors of the sub PWB unit and main
PWB unit.
· Remove the two screws ((b) XiPSN17P03000) from the heat
release 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.
· Remove the three screws Z800E-T: ((e) XiPSF17P03000) or Z700/
Z800S-S/E-S/Z900/Z950: ((b) XiPSN17P03000) remove the screw
Z800E-T: ((d) XiPSF17P02000) or Z700/Z800S-S/E-S/Z900/Z950:
((a) XiPSN17P02000) and remove the VCR bottom cover.
2.
· Remove the two screws Z700/Z800S-S/E-S/Z900/Z950: ((b)
XiPSN17P03000) or Z800E-T: ((e) XiPSF17P03000) and remove the
tilt cover.
· Remove the VCR front cover with the cassette cover opened.
· Disconnect the connector and two tilt FPCs, remove the three screws
((h) LX-BZ0220TAFC) and remove the camera tilt.
or
be
VCR bottom cover
or
e
b
or
be
or
e
b
or
be
ad
or
Tilt cover
How to remove the VCR front cover
1. Remove the two couplings and turn the VCR front cover about 20 degrees in
the direction indicated by (1).
2. Turn the VCR front while sliding it in the direction indicated by (2) to disengage
the internal lug.
* If the VCR front cover is removed by turning it forcedly in the direction indicated
by (1), the internal lug may be damaged.
1
If the VCR front cover is removed
only by turning it in the direction
indicated
The internal lug
may be damaged
2
3.
· Remove the screw ((f1) XiPSF17P04000) with the cassette lid
opened, disconnect the operation PWB FFC and remove the VCR
operating cover.
VCR front cover
h
h
VCR operating cover
h
Camera tilt
Tilt FPC
Connector
f1
Operating PWB FFC
6
4.
k
a
a
w
w
w
Mechanism
Head amp PWB unit
FPC
· Disconnect the six FPCs of the head amp circuit board
unit.
· Remove the two screws ((a) XiPSN17P02000) and
remove the head amp PWB unit.
· Remove the three screws ((w) LX-BZA022WJFN) and
remove the screw ((k) LX-BZA023WJFD).
· Remove the mechanism with the cassette lid opened.
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
Inspection and
maintenance location
Tape running section (See7-3.)
Drum section, Video head
(See 7-3.)
Running system
Pinch roller
Capstan motor (Timing belt)
Swing arm
S reel table, Tu reel table
Center gear boss
Relay pulley shaft
Driving system
Loading motor
Mode SW
Abnormal noise
PB and VS/R winding torque
PB, VS/R and loading back tension
S reel table unloaded torque
Performance check
Number of hours of use (h)
500 1,000 1,500 2,000 3,000
<Rollers>
• Replace if abnormal rotation or swing (large) is found.
<Others>
• Cleans the portions that come in contact with the tape (the lower
drum helical portion in particular). Use the specified cleaning liquid.
••• Replace. ••• Clean. ••• Lubricate. ••• Check.
Symptoms observed at the
time of maintenance
• Block noise
• Clogging of head
• Damage to tape
• Tape not running
• Tape sagged
• Block noise
• Abnormal noise
• Abnormal noise
• Ejecting cannot be made.
• Mode cannot be set.
• Tape not running
• Tape sagged
• Damage to tape
• Abnomaly in reproduced
picture
[Oil] Cosmo Hydro HV22
[Grease] Molykote YM-103
Sankei Chemical CFD-409Z
Notes and remarks
Note:
If no envelope output is obtained
in spite of the video head being
cleaned, replace the drum
component.
(If the envelope output is normal,
refer to "10. USEFUL TIPS".)
• Replace if any abnormal
condition is found.
• Apply oil.
[Oil]
Cosmo Hydro HV22
Note:
Apply oil to the shaft and
lightly wipe it off with a cloth.
• Replace if any abnormal
condition (noise etc.) is found.
• If a part is out of spec, replace
it.
[Loctite adhesive] Three Bond 1401B
[Cleaning liquid] Industrial ethyl alcohol
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
part replacement should be performed if the setting is not satisfied.
(3) About oil
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.
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.
<Caution>
(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.
<Spec for PB (REC) winding torque>(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.)
<Spec for VS-REW winding torque>
(If there is a torque ripple, read the center value.)
1.5 ± 0.15N·m, Ripple: 0.15mN·m or less
(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.
Fig.1 How to release the tension
band when measuring the
VS-REW winding torque
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)
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.
<Note> After replacement, select the L start mode (see 8-1) and check that the
6-4. Checking and adjusting of tension pole position during
REC (PB)
3 to 4V DC, Cassette controller assembly not installed (Mechanism only)
(1) Checking
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.
2. Slightly loosen the screw 1 (to such an extent that the T band adjustment base
2 can be moved.)
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
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
signals have been SP-recorded on the tape), check that the feed-side torque is
within the following spec.
<Spec>(If there is a torque ripple, read the center value.)
0.4 ± 0.05 mN·m
(2) Adjusting (See Fig.5.)
If the measured back tension torque is out of spec, make adjustment according
to the following procedure.
1. Slightly loosen the screw 3.
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
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.
<Reference>
Screw tightening torque: 0.04 N·m
Apply loctite
adhesive.
Tension pole position
(Based on drum base outside shape)
0±0.3
Fig.4 Adjusting of position (tape exists)
Fig.5 Checking (tape exists)
Drum base
T pole
T band adjustment
base 2
Screw 1
Screw 3
T-SPR adjustment ANG4
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.
<Spec>
(If the tension fluctuates, read the center value.)
10mN or less
Fig.6 How to measure the S reel table unloaded torque
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.
<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.
(3) Set the torque gauge in the Tu reel table.
(4) While turning the torque gauge counterclockwise (one turn in three seconds),
check that the torque is within spec.
<Spec>
(If the tension fluctuates, read the center value.)
0.8+0.2/-0.05mN·m
Move the swing arm
to the S reel table
side.
Fig.7 How to measure the loading back tension
A
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.
<Spec>
2.1+0.4N
<Note> 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.)
· After replacement of the T pole, Tu guide and slide chassis, adjust the height of the T pole/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 T pole and Tu guide height, apply screw loctite at the tip of the shaft.
Readjustment of height
Presetting of height not
necessary
Installation of
cassette controller
Preparations for
adjustment of
Running system
Adjusting
procedure(8-3)
Coarse adjustment
of Running system
Adjusting
procedure(8-4)
Final adjustment
of Running system
Adjusting
procedure(8-5)
T pole Height settingTu guide height setting
Height
adjustment jig
Lower edge
alignment
View B
Master plane
View B
T pole
Master plane
Height
adjustment jig
Tu guide
View A
Height
adjustment jig
Apply it in this direction.
View A
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 clockwise 180
degrees.
Lower edge
alignment
Master plane
7-3. Preparations for adjustment of running system
adjustment of running system and adjustment of SW point), Master plane, Height adjustment jig
<Method and description>
(1) Clean the surfaces that come in contact with the tape. (Clean
well the drum surface and the lower drum helical surface in
particular.)
(2) Install the cassette controller.
(3) Connect the oscilloscope to each TP of the joint circuit board.
(4) Turn ON the power of the AC adapter.
(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.
(7) While observing the PB envelope on the oscilloscope, adjust
the running system so that the envelope becomes flat in
states of [+1/4 shift] and [-1/4 shift].
(Each time the PB key is pressed, the shift amount changes
1. Adjustment of height of Su and Tu guide rollers
<Method and description>
(1)Play back the alignment tape for running system
adjustment and make adjustment so that the inlet
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
<Method and description>
(1) In the V/SR mode, check that the envelope waveform
is shaped uniformly.
(2) If the envelope waveform is not shaped uniformly,
fine-adjust the guide roller and Tu guide.
NG
±1/4 shift
A
Outlet side
Normal
B
Inlet side
Make adjustment so that A B.
NG
±1/4 shift
3. Checking for wrinkles in tape
<Method and description>
(1) In the PB mode and V/SR mode, check the tape for
distortion between the Tu guide and the pinch roller.
- If wrinkles are found, make adjustment within a
range of ±180 degrees.
Pinch roller
Wrinkle
Tu guide
Distortion
Distortion
- After making adjustment, apply loctite adhesive to
the tip of the shaft.
4. Checking of envelope waveform rise time
<Method and description>
(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
<Method and description>
(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
<Method and description>
(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. METHOD OF ADJUSTING THE ELECTRICAL CIRCUITS".)
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 "3. DISASSEMBLY OF THE SET".
<Cautions>
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.
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
This mode is used to take out a cassette. In this mode, the
ejection lever is shifted farthest in the direction shown by
Arrow A. (In this mode, the cassette controller assembly
cannot be locked.)
(2) Standby mode
This mode is used to set a cassette. In this mode, the slide
chassis is farthest away from the drum and the ejection lever
is turned (the cassette controller assembly can 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
Back view
Main chassis
EJECTION MODE
(3) L start mode
This mode is used for the Tu reel hub to take up the tape
of a cassette whose leader tape is visible. (In this
mode, the S main brake is located away from the S reel
table.)
Down SW
(moving part)
Ejection lever
Main chassis
STANDBY MODE
(4) Stop mode
This mode is used for stopping (camera mode:
RecLock). In this mode, the S and T pole bases are
pressed against the drum base and the S main brake
is engaged with the S reel table. However the pinch
roller and capstan shaft are separated.
(5)PB (Record, Fast forward, Fast rewind, VSF and VSR)
mode
This mode is used for playback, recording, fast-forwarding,
fast -rewinding, VSF and VSR. In this mode, the pinch roller
is pressed against the capstan shaft and the S main brake
is located away from the S reel table.
Capstan shaft
S reel table
S main brake
PB (RECORD, FAST FORWARD,
FAST REWIND, VSF AND VSR) MODE
Pinch roller
8-2. Cassette controller assembly
<Procedure for removing the cassette controller> (The cassette controller can be installed and removed without removing the cover.)
(1) Apply 3 to 4V DC to the loading motor to establish the standby mode. When removing the cover from the cassette controller, remove
the tow screws (A). (See Fig.1.)
(2) Push the lock lever in the direction shown by the arrow and move up the cassette controller. (See Fig.2.)
(3) Remove the two screws (C) and remove the down guide (D) in the direction shown by the arrow (E). (See Fig.3 and Fig.4.)
(4) Shift the cassette controller in the direction shown by the arrow (F), remove the inner arm guide shaft L and the groove of the inner
arm R toward the inside of the mechanism, and turn the cassette controller. (See Fig.5 and Fig.6.)
(5) Turn the cassette controller in the direction shown by the arrow (H) and shift it in the direction shown by the arrow (I) to remove it
from the slide chassis. (See Fig.7.)
(A)
(B)
Fig.1Fig.2
(C)
(C)
(D)Down guide
At this position, remove the inner arm guide
shaft L toward the inside of the mechanism.
(E)
Fig.3
(F)(F)
Fig.5Fig.6
(E)
Fig.4
16
At this position, remove the groove of the inner arm
R toward the inside of the mechanism.
8-3. Method of operating on the circuit board with the cassette controller assembly removed
If this method is performed improperly, the tape may be damaged. Therefore do not use this method except in special cases
such as measuring the VSR torque. Be sure to follow the cautions shown in this manual.
(1) Apply 3 to 4V DC to the loading motor to establish the standby mode.
(2 Insert a sheet of thick paper folded in two as shown in Fig.9 into the position shown in Fig.10 to turn OFF the down SW.
(Pass the paper along the heavy line in the figure.)
Note) To go into the REC mode, press the pin of the recognition SW.
(3 Selecting the test mode (T-01) with the adjustment remote control without setting a tape will make it possible to operate
the mechanism with the mode keys.
(4) For ejecting, remove the paper inserted in step (2) above.
Pass the folded paper between
the slide chassis and the lock cam
to press the moving part of the
down SW.
(3) Sub cam (The main cam and sub cam should be also phase-adjusted for the chassis.)
(4) S loading arm
(5) Tu loading arm
(6) Loading drive gear (main cam, sub cam, S loading gear)
Note) Check the marker position carefully before disassembling.
Note) When installing the loading drive gear, check that the main cam, sub cam, S loading gear are all phase-adjusted.
(5)Tu loading arm ass'y(4)S Loading arm ass'y
(1)Mode SW
Phase adjustment
mark
Phase adjustment
(gear section)
Phase adjustment
hole (for chassis)
(2)Main cam
Phase adjustment
hole (for chassis)
(3)Sub cam
Phase adjustment
mark
Phase adjustment hole
(for chassis)
(6)Loading gear drive gear
Fig.1
Phase adjustment
mark
(4)S loading arm ass'y
(5)Tu loading arm ass'y
Fig.2
18
8-5. Assembling method
8-5-1. Method of assembling the main chassis assembly
Note) For reference, numbers are prefixed to parts names to show the sequence of assembly.
(For the greasing/oiling and cleaning locations, refer to the diagram of greasing/oiling locations.)
8-5-3. Method of combining the main chassis assembly and the slide chassis assembly
(1) Position the assemblies as shown in the figure below (the pole base is slightly protruded).
(2) Insert the operation pins (tension arm, Tu guide arm) of the slide chassis assembly into the locations of the main chassis assembly
shown in the figure below, fit the SL drive lever pin of the main chassis assembly into the groove of the slide chassis (the groove
of the slide adjustment ANG), and then fix with the two screws.
8-7. Method of taking out the cassette with the mechanism operating singly
(1) Apply 3 to 4V DC to the loading motor for slight unloading.
(2) If the tape is slack, turn the rotor (mechanism backside) of the capstan motor by hand to take up the slack in the tape.
(3) Repeat steps (1) and (2) above. When the pole base is completely unloaded, check that the tape is not slack.
(4) Then apply 3 to 4V DC to the loading motor again. The cassette controller will move up.
(5) Take out the cassette.
Note) When applying 3 to 4V DC to the loading motor for unloading, do so as shown in Fig.1.
Direction of rotation of the rotor
of the capstan motor (from
mechanism backside)
· It seems that, in most cases, this adjusting method is used when it becomes necessary to adjust the electric circuit as a result of
replacement of worn mechanism parts or the video head. When adjusting the electric circuit, check that the mechanism operates
properly (the mechanism is adjusted completely). If a failure occurs in the electric circuit, be sure to locate the fault using a
measuring instrument and then perform repairing, replacement and adjustment, as described in this adjusting method.
Avoid performing undue adjustments etc. without using proper measuring instruments.
· The electric circuit components in the circuit board unit of this product are densely-packed into packages. Most of them are surfacemounted for downsizing.
When replacing components in servicing the product, perform replacement work swiftly with a soldering iron.
In general, surface-mounted components are inferior in heat resistance to large-sized discrete components used in TV sets,
stationary decks, etc. Heating the electrode of a surface-mounted component with a soldering iron for a long time needlessly will
therefore lead to a failure. Take great care not to do so.
Take special care in this respect when replacing chip multilayer capacitors in particular.
We recommend you to use a ceramic soldering iron (Tip temperature: 250°C, Contact time: 5 seconds or less).
9-1. Adjustment of liquid crystal video section
List of measuring jigs
· Color monitor TV
· Digital voltmeter
· DC power source
· Audio generator
(CR oscillator)
· Frequency counter
· AC adapter
· Stereo AV output cable (supplied)
· Adjustment remote control
(RRMCG0033TASA)
· Signal generator
(NTSC pattern generator LCG-401/
401YC: Manufactured by Leader)
· Oscilloscope
· Vector scope
· Tape for recording
· DC cable (supplied with AC adapter)
· Extension wire of video section
· Alignment tape
90ADDVC-TAPE (color bar)
VL-Z700S-T/Z800S-S/E-S/E-T/Z900H-S/Z950S-S/E-A/E-S/E-T/E-W Specifications of service jigs
No.Connection sectionConnector REF. No.
No. of pins
New/
Cont.
Parts cord
1H/A PWB — MAIN PWB1 SC307—SC330233PCQPWBHB737WJZZAN
2H/A PWB — MAIN PWB2 SC308—SC330133PCQPWBHB737WJZZAN
3V/F — USB PWBSC580118PQPWBHC376WJZZ Product usedAF
4MAIN — USB PWBSC8800—SC580027P-25PQPWBHB742WJZZ Product FPC usedAE
[Execution of adjustment]
Adjustment of servo and system controller
1. System code setting
It is necessary to set the following data items after replacing IC705 (E2PROM).
<Adjusting method>
Select the VCR adjustment mode and set the data value at each address.
ModeVCR ADJ mode
Adjusting1) Using command 12, select the VCR adjustment mode.
method2) Using command 20, enable writing to the E
2
PROM.
3) Using command 22, set the above-shown system codes according to the model.
4) Using the command, inhibit writing to the E2PROM.
5) Using the command, exit the VCR adjustment mode.
Examples• Replacement of E2PROM (IC705)
• Manual adjustment
ModeVCR ADJ mode
Adjusting1) Set the CAM/OFF/VCR selector switch to VCR.
method2) Press "CONTINUE" → "VCR adjustment" on the remote control to enter the VCR ADJ mode.
(At this time, "VCR ADJ" is displayed in the lower left part.)
Enter the specified value at each address.
· Shown below is the procedure for setting.
3) Select an address by increasing or decreasing the flashing numeric value with the FF or REW key
and press the PB key to confirm it.
4) Set the flashing numeric value to the specified value by increasing or decreasing it with the FF or
REW key and press the PB key to confirm it.
5) Press the STOP key to make it possible to select an address.
6) Repeat steps (3), (4) and (5) above until all the data items are set. Then press "CONTINUE" to exit
the VCR ADJ mode.
ModeVCR ADJ mode
Adjusting1) Select the video mode and play back the alignment tape.
method2) Press "CONTINUE" → "HSWP ADJ" keys on the remote control.
→ HSWP adjustment execution (When the adjustment is completed, "GOOD" is displayed on the LCD and
ejecting is performed automatically.)
If adjustment cannot be made, "NG" is displayed on the LCD.
Examples· Replacement of mechanism · Replacement of E
2
PROM
3. Adjustment of shutdown
ModeVCR ADJ mode
Adjusting1) Set a recordable tape and select the camera mode.
method2) Press "CONTINUE" → "TEST SEL" on the adjustment remote control to enter the TEST mode (T-01 flashing).
3) Select T-03 with the FF and REW keys and press "PB" key.
4) Adjust the power supply voltage so that TL904(+) becomes 6.00V ± 50mV as viewed from TL900(-).
5) Press the "Display change" button on the main unit. Turn OFF the power.
Examples· Replacement of microcomputer (IC701), Regulator (IC704) and E2PROM (IC705)
ADJUSTMENT OF VIDEO I/O CIRCUIT SYSTEM
(Wiring board diagram: Sub Side A)
TL1475
PCO D/A-C ADJ
TL601
FB600
TL600
C602
VA603
VA602
TL602
C601
VA600
VA601
C600
R603
TL603
R604C2905
R7429
R2915
R2914
C2906
R7428
R7426
TL1473TL1470
TL1471
TL1475
TL1472
R2901
1. PCO D/A-Y adjustment
Measurement pointTL1474 (connected to oscilloscope)
AddressVCR ADJ 566ModeEE mode
Procedure1) 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 date with the FF and REW keys to set the signal appearing at TL1474 to 1.0Vp-p ± 0.05Vp-p.
Examples• During IC705 replacement. • During IC4401 replacement. • During IC1401 replacement.
TL1474
L2901
TL1474
PCO D/A-Y ADJ
TL1476
CP3
CP2
CP1
TL1477
1
1.0 ± 0.05
2. PCO D/A-C adjustment
Test pointTL1475
Address VCR ADJ 567ModeEE mode
Procedure1) Connect the AVS cable and then connect it to the monitor (TO).
2) Call the adjustment mode (V-ADJ).
3) Set the address to "567", and call the data.
4) Vary the data with the FF and REW keys to set the signal appearing at TL1475 to 0.64Vp-p ±
0.05Vp-p.
Examples• During IC705 replacement. • During IC4401 replacement. • During IC1401 replacement.
30
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yyyy
;;;;
yyyy
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yyyy
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yyyy
0.64±0.05
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