ER-A850 (serv.man6). ERA850 880 Option Installation manual - Sharp EPOS Service Manual (repair manual). Page 3

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Install the top cabinet in the reverse order of removing. Before install-
ing, make sure that each connector is connected securely.
(The connector 
4
 between the main PWB and the IOC PWB is of lock
type. When connecting, check the lock of the connector.)
5. Removing the power supply unit
and AC cord
1) Removing the two screws 
1
.
2) Remove the AC cord cover 
2
.
3) Remove the screw 
3
 and the earth wire 
4
.
4) Use a minus screwdriver to loosen the AC cord fixing screws (2
pcs.) of the power supply unit.
5) Pull out the AC cord 
5
 from the power supply unit.
6) Remove the screw 
7
.
7) Disconnect the power supply connector 
8
 from the main PWB.
6. Replacing the power supply unit
Install the power supply unit in the reverse order of removing. Before
installing, make sure that each connector is connected securely.
7. Removing and replacing the
keyboard unit (ER-A850) or LCD
unit (ER-880)
The ER-A850 keyboard unit and the ER-A880 LCD unit are fixed to
the top cabinet with screws. The positions of these fixing screws differ
in the ER-A850 and in the ER-A880.
<ER-A850>
Boss
No.
Screw parts code
Fixing position
Fixed
1
XEBSD30P08000
PWB ANGLE-KEYBOARD
UNIT-TOP CABINET
3
5
7
8
XBBSD30P04000
HOLDER-PWB
ANGLE-TOP CABINET
9
XEBSD30P08000
PWB ANGLE-KEYBOARD
UNIT-TOP CABINET
F
XBBSD30P04000
HOLDER-PWB
ANGLE-TOP CABINET
H
I
XEBSD30P08000
EARTH SPRING-PWB
ANGLE-KEYBOARD
UNIT-TOP CABINET
L
CLERK KEY ANGLE-PWB
ANGLE-TOP CABINET
M
O
PWB ANGLE-KEYBOARD
UNIT-TOP CABINET
Q
Not
fixed
2
4
6
G
J
K
N
P
3
8
7
4
5
A
2
1
21
20
19
18
17
16 15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
Clerk key
IOC PWB ANGLE
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