2 Troubleshooting Procedures 2.4 System Board Troubleshooting
2-22 [CONFIDENTIAL] TECRA A9(S5/P5/S200) Maintenance Manual (960-633)
Table 2-5 Serial port (Boot mode) error status (2/9)
D port
Status
Test item Contents
F0B9h Saving of key scan code
Setting of TASK_1ms_TSC
FAN control
Sound initialization (for BEEP sound) System speaker permission
Cancel of sound mute
Setting of volume to max (model that can
control volume)
When BIOS, EC/KBC rewriting is
requested
Blinks green (cycle:2s, on:1s, off:1s)
When BIOS ROM is abnormal Blinks orange (cycle:2s, on:1s, off:1s)
When BIOS renewal is prohibited Blinks orange (cycle:8s, on:4s, off:4s) HLT
after BEEP is sounded for 30s (LED=BBH))
Key input Prohibition of USB
BEEP
Waiting for Key input
Reading of
CHGBIOSA.EXE/CHGFIRMA.EXE
FDC RESET
Setting of parameters for 2HD (1.44MB)
Reading of first sector, If it is the data of
1.44MB (2HD), the media type is definite.
Setting of parameters for 2DD (720KB)
Retrieval of “CHGBIOSA.EXE” from the
root directory.
Calculation of directory start head and
sector
Read 1 sector of the root directory
Retrieval of entry of “CHGBIOSA.EXE”
/“CHGFIRMA.EXE” from the sector
read.
Reading of EXE header of
“CHGBIOSA.EXE” and “CHGFIRMA.EXE”
Key input when error occurred
Execution of “CHGBIOSA.EXE” and
“CHGFIRMA.EXE”
To Next Page
Loading...
Need help?
General
