Read Sharp ER-A750 (serv.man3) Service Manual online
•
Before installation, be sure to turn off the power.
•
Use gloves to protect your hand from being cut by the angle
and the chassis.
and the chassis.
•
Connect all the cables securely. When connecting or discon-
necting the cables, be careful not to apply stress to the ca-
bles. (It may cause disconnection.)
necting the cables, be careful not to apply stress to the ca-
bles. (It may cause disconnection.)
•
Ground the human body to eliminate static electricity. When
assembling the LCD, use a discharge blower to prevent the
introduction of dust.
assembling the LCD, use a discharge blower to prevent the
introduction of dust.
•
Be careful when working near the high voltage transformer.
Precautions
1. Removing the rear cover
1) Remove the two screws
1
fixed on the lower cabinet.
2) Remove the rear cover
2
.
Fig. 1
2. Replacing the rear cover
Install the rear cover in the reverse order of removing.
3. Removing the top cabinet
1) Remove the two screws
1
fixed on the lower cabinet.
2) Remove the top cabinet.
a) Lift the rear edge of the top cabinet in the direction of arrow A.
b) Slide the top cabinet in the direction of arrow B and remove
three pawls of the bottom cabinet at the same time. (Be care-
ful not to break the pawls.)
ful not to break the pawls.)
c) Lift the top cabinet and put it straight in the direction of arrow C.
(Be careful not to pull the cable between the top cabinet and
the main PWB.)
the main PWB.)
d) Pull and remove the following cables between the top cabinet
and the main PWB.
•
Cable
2
between the main PWB and the invertor PWB:
(CON1)
•
Cable
3
between the main PWB and the LCD: (CON2)
•
Cable
4
between the main PWB and the CKDC PWB:
(CON3)
•
Cable
5
and
6
between the CKDC PWB and the customer
display PWB.
1
2
e) Remove the screw
7
and the earth wire
8
.
Fig. 2
Fig. 3
4. Replacing the top cabinet
Install the top cabinet in the reverse order of removing. Before install-
ing, make sure that each connector is connected securely.
ing, make sure that each connector is connected securely.
A
B
1
1
C
8
7
3
2
4
6
5
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