Toshiba PORTEGE R400 Maintenance Manual page 57

Check 3 The IRT checks the system board. When the IRT detects an error, the system
stops or an error message appears.
If one of the following error messages (1) through (15), (20) or (21) appears, go to
Procedure 4.
If the error message (16) appears, go to the Keyboard Troubleshooting Procedures
in Section 2.7.
If the error message (17) or (18) appears, go to the HDD Troubleshooting
Procedures in Section 2.6.
If the error message (19) appears, go to the Optical Drive Troubleshooting
Procedures in Section 2.9.
(1)
(2)
(3)
(4)
(5)
(6)
(7)
(8)
(9)
(10)
(11)
(12)
(13)
(14)
(15)
(16)
(17)
(18)
(19)
(20)
(21)
PORTEGE R400 Maintenance Manual (960-623)
PIT ERROR
MEMORY REFRESH ERROR
TIMER CH.2 OUT ERROR
FIRST 64KB MEMORY ERROR
FIRST 64KB MEMORY PARITY ERROR
VRAM ERROR
SYSTEM MEMORY ERROR
SYSTEM MEMORY PARITY ERROR
MEMORY ERROR
EXTENDED MEMORY PARITY ERROR
DMA PAGE REGISTER ERROR
DMAC #1 ERROR
DMAC #2 ERROR
PIC #1 ERROR
PIC #2 ERROR
KBC ERROR
HDC ERROR
Built-in HDD ERROR
CD-ROM ERROR
TIMER INTERRUPT ERROR
RTC UPDATE ERROR
2 Troubleshooting Procedures
[CONFIDENTIAL] 2-19