ER-A410, ER-A420 (serv.man19). CR-A280 Technical Update Cash Drawer fuse blowing, Preventative maintenance - Sharp ECR Technical Bulletin (repair manual). Page 2

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ER-A410 / ER-A420 main board.
Add the diode "VHD1N4002//-1" or "VHD1SR139-400" between FB22 and 23, and between FB25
and 23 as shown below.
ADD 1N4002
(VHD1N4002//-1)
or
(VHD1SR139-400)
1N4002
1N4002
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