Toshiba T200 User Manual page 38

Procedure 5 Connection and Replacement Check
The system board(s) may be disconnected or damaged. Disassemble the computer following
the steps described in Chapter 4, Replacement Procedures, and check the connection between
the upper system board and lower system board, and other components. After checking the
connection, perform the following checks.
If the IRT test (Boot mode) detects any of the following codes, go to Check 1.
FFH (first), 01H, 04H, 06H, 07H, 08H, 0BH, 0CH, 0DH, 18H, 30H, 33H, 40H,
41H, 42H, 4AH, 50H, 5AH, 60H, 65H, 70H, 80H, 90H, A0H, C0H, FEH
If the IRT test (Boot mode) detects any of the following codes, go to Check 2.
02H, 03H, 05H, 09H, 0AH, 1FH, 55H, A6H
If the IRT test (Resume mode) detects any of the following codes, go to Check 1.
00H, F0H, F1H, F2H, F6H, FAH, FDH
If the IRT test (Resume mode) detects any of the following codes, go to Check 2.
F4H, F5H, F7H, F8H, F9H, FBH, FEH
If any of the following diagnostic tests detects an error, go to Check 1.
System test
NDP test
Printer test
Async test
PCMCIA test
If any of the following diagnostic tests detects an error, go to Check 2.
Memory test
Real Timer test
Tablet test
Check 1 Replace the upper system board with a new one. If the problem still exists, replace
the lower system board with a new one. Refer to Chapter 4 for instructions on
how to remove and replace the upper and lower system boards.
Check 2 Replace the lower system board with a new one. If the problem still exists, replace
the upper system board with a new one. Refer to Chapter 4 for instructions on
how to remove and replace the upper and lower system boards.
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