MiTAC 7521 PLUS/N - Page 121

120
7521
7521
Plus / N N/B MAINTENANCE
Plus / N N/B MAINTENANCE
8.7 CD-ROM DRIVE TEST ERROR
An error message is shown when reading data from CD-ROM drive.
Replace faulty
parts then end.
CD-ROM DRIVE TEST ERROR
1. Try another known good transfer board.
2. Try another known good compact disk.
3. Check if CD-ROM is installed
properly( J512 ).
Test
OK?
Try another known good
CD-ROM drive.
Test
OK?
Replace M/B or
into board-level
Troubleshooting.
Correct it
then end.
Board-level
Troubleshooting for
CD-ROM drive test error.
Check the following parts for cold solder or one of the following
parts on the mother-board may be defective, use an oscilloscope
to check the following signal or replace the parts one at a time and
test after each replacement.
Parts:
U24, Q508
RP50, RP51
RP52, RP58
R193, R106
C672, C669
J512
Signals:
SDD[0~15]
SDDACK#
SDIOR#
SDIOW#
SDDREQ
SDCS[1,3]#
SDA[0:2]
SIDEACTS#
SIDE_ PU
RDDS[0~15]
RSDDACK#
RSDIOR#
RSDIOW#
RCS[1,3]S#
RDAS[0~2]
CD_RST#
RST_CDROM
YES
NO
YES
NO