User guide

Message Possible cause Remedy by technician
Keyboard controller failure
Failureoffirmwareofthe
keyboard controller
Check CPU
Keyboard stuck key failure One or several keys stuck Try again to press the keys
Memory address line failure
at hex-value, read hex-value,
expecting hex-value
Failure of memory chips
connected to circuit
Check CPU
Memory data line failure at
hex-value, read hex-value,
expecting hex-value
Failure of one of memory
chips or one of circuits
Replace memory chips
Memory high address line
failure at hex-value, read
hex-value,
expecting hex-value<
Failure of memory chips
connected to circuit
Check CPU
Memory double word logic
failure at hex-value, read
hex-value, expecting
hex-value
Memory chip circuit failure Replace memory chip
Memory odd/even logic
failure at hex-value, read
hex-value, expecting
hex-value
Failure of memory chips
connected to circuit
Check CPU
Memory parity failure at
hex-value, read hex-value,
expecting hex-value
Failure of one of parity
memory chips
Replace memory chip
Memory write/read failure at
hex-value, read hex-value,
expecting hex-value
Failure of one of memory
chips
Replace memory chip
No boot sector on hard disk -
strike 7 to reboot
Drive C: is not formatted or
system start not possible
Format drive
Phoenix BIOS POST
GB - 88