Hitachi P50H401/DW3-U Service Manual page 137

TROUBLESHOOTING THE 50AE1 PANEL
4.6.3 "Horizontal bar" Problem analysis procedure
Horizontal bar
Turn off the main power.
Replace X-SUS board.
Turn Set On.
Normal?
Turn off the main power.
Remove New X-SUS PWB
Put Old X-SUS PWB back in.
Replace Y-SUS board.
Turn Set On.
Normal?
Y
N
Y
N
X-SUS board is defective.
Y-SUS board is defective.
Panel is Defective.
Remove All New PWBs
Turn off the main power, End of analysis
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