DOWNLOAD Sharp ER-A880 (serv.man6) Service Manual ↓ Size: 369.13 KB | Pages: 7 in PDF or view online for FREE

Model
ER-A880 (serv.man6)
Pages
7
Size
369.13 KB
Type
PDF
Document
Service Manual
Brand
Device
EPOS / ERA850 880 Option Installation manual
File
er-a880-sm6.pdf
Date

Sharp ER-A880 (serv.man6) Service Manual ▷ View 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.
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.)
Ground the human body to prevent against troubles and dust
adhesion to the LCD by static electricity. When assembling
the LCD, use a discharge blower to prevent against dust intru-
sion.
Be careful to the high voltage of the invertor PWB trans-
former.
 Precautions
1. Removing the rear cover.
1) Remove the two screws 
1
 suited on the lower cabinet.
2) Remove the rear cover 
2
 in the direction of arrow 
A
.
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
 suited 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 careful
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 excessively.)
1
2
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:
(CON25)
Cable 
3
 between the main PWB and the LCD: (CON4)
Cable 
4
 between the main PWB and the IOC PWB: (CON7)
(CON7 employs the lock type connector. To remove, re-
lease the lock and pull the cable.)
4. Replacing the top cabinet
1
1
A
B
4
2
3
C
– 1 –
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
– 2 –
<ER-A880>
Boss
No.
Screw parts code
Fixing position
Fixed
2
XEBSD30P08000
PWB ANGLE-LCD
UNIT-TOP CABINET
4
6
7
XBBSD30P04000
HOLDER-PWB
ANGLE-TOP CABINET
8
XEBSD30P08000
PWB ANGLE-LCD
UNIT-TOP CABINET
9
XBBSD30P04000
HOLDER-PWB
ANGLE-TOP CABINET
F
XEBSD30P08000
PWB ANGLE-LCD
UNIT-TOP CABINET
H
XBBSD30P04000
HOLDER-PWB
ANGLE-TOP CABINET
I
XEBSD30P08000
EARTH SPRING-PWB
ANGLE-LCD UNIT-TOP
CABINET
L
CLERK KEY ANGLE-PWB
ANGLE-TOP CABINET
M
N
PWB ANGLE-LCD
UNIT-TOP CABINET
P
Not
fixed
1
3
5
G
J
K
O
Q
8. Removing and replacing the LCD
unit (ER-A850)
1) Remove the four fixing screws 
3
 of the display unit from the top
cabinet 
1
.
2) Remove the two fixing screws 
4
 of the LCD unit in the display unit.
3) The LCD unit is assembled with seven pawls. Remove the pawls
in the order of 
a
 to 
g
 as shown in the figure.
1
2
3
b
a
c
d
e
f
g
LCD cabinet hear side
4
– 3 –
9. ER-03MB & ER-04MB
1) Remove the top cabinet.
2) Attach the spacers 
1
2
 and 
3
 to the memory PWB.
3) Connect the memory PWB to the main PWB.
4) Fix the memory PWB to the main PWB with a screw 
4
.
10. ER-A8MR
1) Remove the rear cover.
2) Fix the MCR angle to the lower cabinet with two screws 
1
.
3) Connect the MCR cable 
2
 to the MCR expansion cable 
3
.
11. ER-A8RS
1) Remove the rear cover.
2) Insert the I/F PWB 
1
 to the ISA BUS connector.
3) Fasten the bracket to the main chassis using screws 
2
.
4) Connect the RS232 cables to the I/F PWB.
1
2
3
4
4
1
2
3
2
ER-A8RS connection
1
2
– 4 –
Page of 7
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Sharp ER-A880 (serv.man6) Service Manual ▷ Download

  • DOWNLOAD Sharp ER-A880 (serv.man6) Service Manual ↓ Size: 369.13 KB | Pages: 7 in PDF or view online for FREE
  • Here you can View online or download the Service Manual for the Sharp ER-A880 (serv.man6) in PDF for free, which will help you to disassemble, recover, fix and repair Sharp ER-A880 (serv.man6) EPOS. Information contained in Sharp ER-A880 (serv.man6) Service Manual (repair manual) includes:
  • Disassembly, troubleshooting, maintenance, adjustment, installation and setup instructions.
  • Schematics, Circuit, Wiring and Block diagrams.
  • Printed wiring boards (PWB) and printed circuit boards (PCB).
  • Exploded View and Parts List.