Removing And Replacing The Lcd Unit; Expansion Ram Board : Up-P02Mb2; Rs232 I/F: Er-A7Rs - Sharp ER-A770 Installation Manual

8. Removing and replacing the LCD
unit
1) Remove the four fixing screws
cabinet .
2
3
Fig. 5
2) Remove the two fixing screws
unit.
3) The LCD unit is assembled with seven pawls. Remove the pawls
in the order of to as shown in the figure.
c
b
a
4
Fig. 6
of the display unit from the top
3
1
of the LCD unit in the display
LCD cabinet hear side
d e
f
g
9. Expansion RAM Board :
UP-P02MB2
Make sure to save data before installing this option.
Also make sure the capacitor (C32) is positioned in the direc-
tion opposite the connector ; otherwise the capacitor might
hinder the insertion of the expansion RAM board.
1) Remove the top cabinet.
2) Install the Expansion RAM Board
on the Main PWB.
a) Insert the Expansion RAM Board into the option RAM connector.
b) Insert that the Expansion RAM Board is locked by the arms of
option RAM connector as s indicated in Fig 7.
It is possible to install one UP-P02MB2.
Install the Expansion RAM Board with the notch part of the
PWB (Figure A) come right. Installing the Expansion RAM
Board in the wrong direction may damage the connector
part or make the machine out of order.
A
Fig. 7
3) Removing the Expansion RAM Board.
a) Open the arms of option RAM connector right and left.
b) The Expansion RAM Board will be lifted automatically.

10. RS232 I/F: ER-A7RS

1) Remove the rear cover.
2) Remove the two screws from the chassis.
3) Insert the I/F PWB to the connector.
4) Fix the I/F bracket to the chassis with screws
5) Install the ferrite core .
6) Install the Nylon band to the cables.
to the Option RAM connector
1
.