Read Sharp ER-A750 (serv.man3) Service Manual online
2. Cautions to be exercised when using
the RAM PWBs with the ER-A750
A hardware jumper (JP1) is located on the main PWB of the ER-A750
(Fig. 2). Before installing an optional RAM PWB, check its version by
referring to the description given in the above-mentioned (1) and (2)
and set the jumper as shown below.
(Fig. 2). Before installing an optional RAM PWB, check its version by
referring to the description given in the above-mentioned (1) and (2)
and set the jumper as shown below.
Fig. 3 Setting of the JP1 on the main PWB of the ER-A750
(1)
Setting when the ER-03MB or the ER-04MB is not marked with
"
"
|
"
(Position to which the ER-A750 has been factory-set)
(2)
Setting when the ER-03MB or the ER-04MB is marked with "
|
"
Note:
When installing the ER-03MB or the ER-04MB, check the position
of the jumper by referring to Fig. 3.
Improper setting of the jumper may result in malefunction.
When installing the ER-03MB or the ER-04MB, check the position
of the jumper by referring to Fig. 3.
Improper setting of the jumper may result in malefunction.
12. ER-A7RS
Fig. 10
1) Remove the rear cover.
2) Remove the rear display.
3) Remove the two screws
2
from the chassis.
4) Insert the I/F PWB
1
to the connector.
5) Fasten the bracket to the chassis using screws
2
.
6) Connect the RS232 cables to the I/F PWB.
Fig. 11
7) Install the rear display.
E
C
Imprint " " under the model label.
Colleclive case
E
C
B
3
2
1
MAIN PWB
+C
17
Q6
IC
27
1
3
JP1
ZD4
1
IC
16
Short position
IN case of (1)
IN case of (2)
1
3
1
3
ER-A7RS connection
1
2
– 5 –
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