Toshiba T4500 User Manual page 39

Error status
4AH PIC test
54H Keyboard test
55H KBC initialization
5AH Mouse initialization
60H HDD initialization
65H FDD initialization
70H Printer test
80H RS-232-C test
90H Timer initialization
A0H NDP initialization
A6H Expansion I/O ROM
FFH Expansion system ROM
Check 1: If any of the following error codes are displayed, replace the System PCB with a new
one.
01h, 05h, 06h, 07h, 0Ah, 0Bh, 0Dh, 15h, 16h, 18h, 1Fh, 22h, 25h,
30h, 40h, 41h, 42h, 54h, 55h, 65h, 70h, 80h, 90h, A0h, A6h
Check 2: If Error Code 4Ah is displayed, go to the Keyboard Troubleshooting procedures in
Section 2.7.
Check 3: If Error Code 5Ah is displayed, go to the Hard Disk Drive Troubleshooting procedures
in Section 2.6.
Check 4: If Error Code 60h is displayed, go to the Floppy Disk Drive Troubleshooting proce-
dures in Section 2.5.
Table 2-3 Printer Port LED Error Status (2 of 2)
Test item
PIC #1 ERROR
READ DATA = XXH
WRITE DATA
PIC #2 ERROR
READ DATA = XXH
WRITE DATA = XXH
KEYBOARD ERROR
KBC ERROR
--
HDC ERROR
HDC #0 ERROR
HDC #1 ERROR
NO FDD ERROR
FDD ERROR
--
--
TIMER INTERRUPT ERROR
RTC UPDATE ERROR
--
--
--
Message
= XXH
2-15