SHARP ER-A771
Service Manual

8. Removing and replacing the LCD unit
1) Remove the four fixing screws 3 of the display unit from the top cabinet 1.
2

9. Expansion RAM Board: UP-S02MB2
Make sure to save data before installing this option

1) Remove the top cabinet. 2) Install the Expansion RAM Board 1 to the Option RAM connector on the Main PWB. a) Insert the Expansion RAM Board aslant into the option RAM connector. b) Push the RAM disk unit Expansion RAM Board is locked by the arms of option RAM connector. * It is possible to install one UP-S02MB2. * Be careful of the direction of Expansion RAM Board to be installed. 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.

3

A 1

3

1

Fig.5 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.
LCD cabinet hear side

c

d

e

b

f

a

g

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.

4
Fig.6

10. RS232 I/F: ER-A7RS2 & EFT I/F: ER-02EF2
1) Remove the rear cover. 2) Remove the two screws 1 from the shassis. 3) Insert the I/F PWB 2 to the connector. 4) Fix the I/F bracket to the shassis with screws 1. 5) Install the ferrite core 3.
ER-A771VI Removing and replacing the LCD unit

�3�