Epson QX-10 Technical Manual page 73

Disconnect the cable
connected to the FDD
unit from eN6 and
eN7 on Ql OSYM board.
• Remove the option
if it is mounted.
• If the short-circuit is
corrected as a result,
replace the option and
fuse F1, arid then chec
again according to the
check out procedure.
Replace
Q
1 OSYM board.
N
Replace the FDD unit.
Replace Ql OSYM board.
Check again according
to the check out
procedure.
5-4
Execute the diagnqstic
program.
Y
Replace
Ql
OSYM board.
N