Advertisement
2.4
System Board Troubleshooting
This section describes how to determine if the system board is defective or not functioning
properly. Start with Procedure 1 and continue with the other procedures as instructed. The
procedures described in this section are:
Procedure 1:
Procedure 2:
Procedure 3:
Procedure 4:
Procedure 5:
Procedure 1
Message Check
When the power is turned on, the system performs the Initial Reliability Test (IRT) installed in
the BIOS ROM. The IRT tests each IC on the system board and initializes it.
If an error message is shown on the display, perform Check 1.
If there is no error message, go to Procedure 2.
If Toshiba MS-DOS is properly loaded, go to Procedure 3.
Check 1
If one of the following error messages is displayed on the screen, press the F1 key
as the message instructs. These errors occur when data is lost or when the system
configuration preserved in the RTC memory (CMOS type memory) is not the
same as the actual configuration.
If you press the F1 key as the message instructs, the system configuration in the
RTC memory configuration is set to the default setting. If error message (b)
appears often when the power is turned on, replace the RTC battery. If any other
error message is displayed, perform Check 2.
(a)
(b)
(c)
(d)
(e)
2-8
Message Check
Printer Port LED Check on Boot Mode
Printer Port LED Check on Resume Mode
Diagnostic Test Program Execution Check
Replacement Check
*** Error in CMOS.
Check system.
Then press [F1] key ......
*** Error in CMOS.
Check system.
Then press [F1] key ......
*** Error in CMOS.
Check system.
Then press [F1] key ......
*** Error in CMOS.
Check system.
Then press [F1] key ......
*** Error in CMOS.
Check system.
Then press [F1] key ......
Bad HDD type ***
Bad battery ***
Bad check sum ***
Bad memory size ***
Bad time function ***
610CT
Advertisement
