-30-
Disconnect between
XBB and X-SUS
Measure of XBB line resistor
(A1-B1, B1-A2, A2-B2, B2-A3,
A3-B3, B3-A4, A4-B4)
Does XBB line
short?
Y-SUS board is defective.
X-SUS board is defective.
XBB is defective. (Panel
chassis is defective.)
Turn off the AC power.
End of analysis
X-SUS board is defective.
A1
B1
A2
B2
A3
B3
A4
B4
(5)