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2.4 System Board Troubleshooting 2 Troubleshooting Procedures
Table 2-3 Printer port LED boot mode status (6/8)
LED Status Test item Message
Storing CMOS error status in IRT error status buffer
Start of TIMER initialization
Initialization of buffer for power save
0EH System initialization
Update of system BIOS (model name, EDID of the LCD)
0FH Display initialization Waiting for the end of VGA chip initialization
10H LOGO display
11H Conventional memory check (Boot)
12H Extension memory check Check of exceptional cases in protected mode (Boot)
Conventional memory initialization
(Reboot)
13H
(LED=14H when an error is
detected in check of exceptional
cases in protected mode)
15H DMA Page Register check (Boot)
16H DMAC check (Boot)
17H DMAX initialization (Boot)
18H Printer check
19H SIO check
(Reboot)
Waiting for the end of HDD initialization
Key input check during IRT (Waiting for the end of KBC
initialization)
ATA priority initialization
(Boot)
BM loading
BM initialization
Key input check during IRT (Waiting for the end of KBC
initialization)
Password input
1AH Password check
Enabling BM
1BH Extension I/O ROM check
Storing the value of 40:00h (for SIO save/store)
Font address setting for resume password
1CH Final setting up prior to boot-up
Setting of parameter for character repeat on a USB
keyboard
TECRA M1 Maintenance Manual (960-436) 2-25