6-18 Troubleshooting and Repair
HDD Interface Check
Internal Keyboard Check
6
Check BIOS Setup
Menu
Enter correct HDD
type or set to AUTO
Check if HDD is
properly formatted
Use DOS FDISK and
FORMAT
Check HDD Power
Check +5Vs
Check HDD Data
Bus
Check HDD connector
PDD (0-15) and AIO to
AMB connector
END
NO
YES
NO
NO
NO
YES
YES
Check HDD Address
Bus
Check HDD connector
address bus, and AIO
to AMB connector
NO
YES
YES
7
Check the keyboard
FPC cable
Check FPC cable if
broken or not
Check Keyboard
Interrupt
Check U47
Pin 23, IRQ1
Check Keyboard
scanning signals
Check K/B connector
and check AIO to AMB
connector
Check U23
END
NO
YES
NO
NO
YES
YES