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4.6.3 "Horizontal bar" Problem analysis procedure
Horizontal bar
Normal?
Y-SUS board is
defective.
Y
Turn off the power.
Replace Y-SUS board (Backup part).
Turn on the power.
Turn off the power.
Replace Y-SUS board (Defective product).
Replace X-SUS board (Backup part)
Turn on the power.
N
Normal?
X-SUS board is
defective.
Panel chassis is
defective.
Y
N
Turn off the power.
End of analysis
Turn off the power.
Replace X-SUS board (Defective product).
Replace ABUS-D2 and D3 board (Backup part)
Turn on the power.
Normal?
ABUS-D2 and D3 board
are defective.
Y
N