Sharp PC-1350 - 11. PARTS AND SIGNAL LAYOUT CHART (MAIN PWB); Jumper Circuit Description

T._ K ON
V GG
-17 -
IA 7 } oFF key
-----I A 8
It is the circuit to prevent change in the RAM card contents
which may occur when the RAM card is replaced in the
following condition:
(1) during auto - power-off, or ,
(2) with the PC-1350 i n power on cond i tion
to replace the RAM card.
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S W2 L oc k S W
Jumper and subsidiary board circuit description
1 1. PARTS AND SIGNAL LAYOUT CHART (MAIN PWB)