Flowchart For Diagnosis And Repair - Yamaha pw 5000 Service Manual

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FLOWCHART FOR DIAGNOSIS AND REPAIR

The breaker of the room is
a trip at the time of repair.
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L 13942296513
YES
PF600 (PFC block)
Resume power supply
NO
Replace PCU-CONT
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.
Perform non-reproducible
failure tests (Page 5)
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The information
check of fault
Appearance check
(for any falling damages, dints, or fracture, trace of burnout,
corrosion resulted from flooding, etc.)
Turn on AC power supply
OK
Check output
OK?
No output
?
No output
?
YES
substrate
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2 9
8
Refer to the decomposition procedure
(7 pages) for how to remove.
YES
(OK)
When a defect is not discovered,
it is non-reappeared examination
item enforcement (Page 5).
NO (NG)
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3 6 7 1 3
NO
No output at
+48.0V
?
(12.0V NG)
YES
Replace +48.0V
(CELL 6) block
Para operation release
of 12.0V(CELL 1-5)
Replace the
failed CELL
.
9 4 2 8
1 5 0 5 8 2 9 9 4
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PW5000
9 9
2 8 9 9
3