Read Sharp VC-MH835 (serv.man12) Service Manual online
4
VC-MH705HM/LM
VC-MH815HM/LM,MH85HM
VC-MH715HM,MH835HM
VC-MH815HM/LM,MH85HM
VC-MH715HM,MH835HM
8
A
D
7
7
9
1
C
2
4
2
4
5
B
E
B
D
A
C
6
D
VC-MH715HM
FRONT PANEL
B
3
3
VC-MH705HM/LM
FRONT PANEL
B
3
3
6
E
TOP CABINET
TOP CABINET
FIX ANGLE
FIX ANGLE
MAIN FRAME
OPERATION PWB
ANTENNA
TERMINAL
COVER
TERMINAL
COVER
EUR-TERM PWB
MAIN PWB
MECHANISM
CHASSIS
CHASSIS
CASSETTE
HOUSING
CONTROL
HOUSING
CONTROL
F
F
2. DISASSEMBLY AND REASSEMBLY
2-1 DISASSEMBLY OF MAJOR BLOCKS
(VC-MH705HM/LM,MH715HM)
TOP CABINET
TOP CABINET
: Remove 2 screws
1
.
FRONT PANEL
: Remove 2 screws
2
and 7 clips
3
.
MECHANISM/
: Remove 2 screw
4
, 1 screw
5
.
MAIN PWB
Remove 2 screws
6
and 2 screws
7
with antenna terminal cover. Remove
1 screw
1 screw
9
. Remove 1 screw
8
with
top cabinet fix angle.
5
VC-MH705HM/LM
VC-MH815HM/LM,MH85HM
VC-MH715HM,MH835HM
VC-MH815HM/LM,MH85HM
VC-MH715HM,MH835HM
(VC-MH815HM/LM,MH835HM,MH85HM)
1
10
5
8
A
A
1
C
C
E
4
D
A
B
D
A
B
7
6
2
9
Operation PWB
Main Frame
Cassette Housing Control
C
Top Cabinet
Front Panel
3
B
3
E
Mechanism
Chassis
Chassis
Main PWB
(VC-MH835HM)
(except VC-MH835HM)
VC-MH835HM only
8
F
F
TOP CABINET
: Remove 4 screws
1
.
FRONT PANEL
: Remove 2 screws
2
and 7 clips
3
.
MECHANISM/
: Remove 1 screw
4
, 1 screw
5
,
MAIN PWB
1screw
0
and antenna terminal
cover. Remove 2 screws
6
and
mechanism chassis. Remove 1 screw
7
and 2 screws
8
with main PWB.
CASSETTE
: Remove 2 screws
9
.
HOUSING
CONTROL
CONTROL
6
VC-MH705HM/LM
VC-MH815HM/LM,MH85HM
VC-MH715HM,MH835HM
VC-MH815HM/LM,MH85HM
VC-MH715HM,MH835HM
Pinch Drive Cam
Synchro Gear
Master cam
Main Chassis
Drive Lever
2-2 CARES WHEN REASSEMBLING
INSTALLING THE CASSETTE HOUSING
When the cassette housing is installed on the mechanism,
the initial setting is essential condition.
There are two initial setting methods, namely electrical and
mechanical.
1. Electrical initial setting
So as to perform initial setting of mechanism execute the
Step 1 of Installation of cassette housing. After ascertaining
the return to the initial setting position install the cassette
housing. (Conditions: When mechanism and PWB have
been installed)
When the cassette housing is installed on the mechanism,
the initial setting is essential condition.
There are two initial setting methods, namely electrical and
mechanical.
1. Electrical initial setting
So as to perform initial setting of mechanism execute the
Step 1 of Installation of cassette housing. After ascertaining
the return to the initial setting position install the cassette
housing. (Conditions: When mechanism and PWB have
been installed)
2. Mechanical initial setting
• Rotate the worm gear by pushing the flange manually until
• Rotate the worm gear by pushing the flange manually until
return to initial position.
• When apply power supply to rotate the loading motor,
please remove/unsolder at least one terminal wire.
the terminal wire, there is a possibility the capstan motor
IC will damage.
IC will damage.
• The maximum applied voltage is 9V. If more than 9V,
there is apossibility the mechanism will damage.
• After ascertaining the return to the initial set position
install the cassette housing in the specified position. (This
method is applied only for the mechanism.)
method is applied only for the mechanism.)
Rotate the flange of worm gear by using thin stick.
CW • • • Loading direction
CCW • • • Ejection direction
Note:
Be careful not to damage the gear of worm gear and
worm wheel gear. It miight cause a strange sound.
CW • • • Loading direction
CCW • • • Ejection direction
Note:
Be careful not to damage the gear of worm gear and
worm wheel gear. It miight cause a strange sound.
AH CONNECTOR
AE CONNECTOR
END SENSOR
END TIP SW
AA CONNECTOR
AD CONNECTOR
MODE SW
START SENSOR
VC-A50 only
AC CORD
90
°
180
°
270
°
0
°
MASTER CAM POSITION
This positioning hole
should be at front side.
should be at front side.
INSTALLING THE MECHANISM ON PWB
Lower vertically the mechanism, paying attention to the
mechanism edge mode SW position, (Set the mode SW
position to 270° and make sure the master cam position
hole also in 270° position) and install the mechanism with
due care so that the parts are not damaged.
* Please make sure to insert correctly.
Lower vertically the mechanism, paying attention to the
mechanism edge mode SW position, (Set the mode SW
position to 270° and make sure the master cam position
hole also in 270° position) and install the mechanism with
due care so that the parts are not damaged.
* Please make sure to insert correctly.
If not, strange moving will occur and will couse mecha-
nism damage.
PARTS WHICH NEED PARTICULAR CARE
When installing the mechanism chassis on the PWB unit,
take care so as to prevent deformation due to contact of
mechanism chassis with REC TIP SW.
When installing the mechanism chassis on the PWB unit,
take care so as to prevent deformation due to contact of
mechanism chassis with REC TIP SW.