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28. CDROM problem
Y
Check
U520,U521,U522,RP509,
RP507,RP505,RP506,
RP508,RP510,RP511
CDROM
Change CDROM drive
Y
CD Works?
N
Check CDROM drive
Change CDROM FFC Bç
CD USB PCB
Y
CD Works?
N
Check FFC, CD USB PCB
Check
J510 41,42,43pin
= 5V?
N
N
CD_PWR# = low?
Y
Check U510
Check
L522,Q505,C611,C607,
C608,R637,Q506,R243
29. FDD problem
FDD
Change FDD
FDD works?
USB
30. PDC Adapter problem
PDC Adapter
Change PDC Adapter unit
28/30
OK?
USB
Y
N
Check FDD unit
Y
N
Check PDC Adapter unit
29/30
30/30
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