4 system board 2 troubleshooting, Table 2-2 printer port led boot mode status (2/3) – Toshiba TECRA S1 User Manual
Page 52

2.4 System Board
2 Troubleshooting
TECRA S1 Maintenance Manual
2-15
Table 2-2
Printer port LED boot mode status (2/3)
LED Status
(Hexadecimal)
Test Item
Description
20H
DEBUG_KEYB_SELFTEST_CTLR
Send selftest command (AAH) to test Keyboard
controllor if o.k. return (55h)
21H
DEBUG_KEYB_RESET_KEYBOARD Test Keyboard Controller and initialize keyboard
controllor
22H
DEBUG_POST_CHECK_CMOS_RAM Send test petten to Check CMOS Ram
23H
DEBUG_POST_TEST_BATT_CMOS_STest Battery Fail & check CMOS X-SUM
24H
DEBUG_HWIO_TEST_DMA_CTLRS Use DMA to copy data for Test the DMA controllers
25H
DEBUG_HWIO_INIT_8237
Initialize 8237A Controller
26H
DEBUG_POST_INIT_VECS
Install and Iniitialize interrupt Vectors
27H
DEBUG_RAM_QUICK_SIZE
Enter memory protect mode,use change RAM bank to
do RAM Quick Sizing
28H
DEBUG_RAM_PROT_ENTRY_1
Memory protected mode entered safely
29H
DEBUG_RAM_SIZE_DONE
Test the basic 640k ram,RAM test completed
2AH
DEBUG_RAM_PROT_EXIT
Protected mode exit successful
2BH
DEBUG_CS_SHADOW_SETUP
Shadow system and video BIOS to RAM if CMOS
requests shadowSetup Shadow
2CH
DEBUG_VIDEO_EQUIP_INIT_INIT Going To Initialize 6845 CRT controllor
2DH
DEBUG_VIDEO_BW_SEARCH
Search For Monochrome Adapter
2EH
DEBUG_VIDEO_COLOR_SEARCH
Search For Color Adapter
2FH
DEBUG_VIDEO_SIGNON
Signon messages displayed
30H
DEBUG_OEM_CONFIG_KBD_CTL
For special initialize of keyboard controllor
31H
DEBUG_KEYB_PRESENT_TEST
Test the keyboard controllor ,If Keyboard
Present
32H
DEBUG_KEYB_TEST_IRQ1
Clear keyboard buffer and sen keyboard command
to test Keyboard Interrupt
33H
DEBUG_KEYB_TEST_CMD
Send keyboard command to turn off keyboard LED
and Test some Keyboard Command Byte
34H
DEBUG_RAM_FULL_TEST
TEST memory procedure, for test,blank and
count all RAM
35H
DEBUG_RAM_PROT_ENTRY_2
Eneter the memory protected mode for test all expand
memory
36H
DEBUG_RAM_TEST_DONE
Test and blank all memory complete
37H
DEBUG_RAM_PROT_EXIT_2
Switch the memory from Protected mode to real mode
38H
DEBUG_KEYB_OUTPUT_PORT
Disable A20 status for memory test finish
39H
DEBUG_CS_CACHE_SETUP
Setup Cache Controller
3AH
DEBUG_HWIO_TEST_PERIODIC
Check and test the timer 0 interrupt function is Working
3BH
DEBUG_GEN_CHECK_RTC
test for RTC ticking
3CH
DEBUG_GEN_INIT_HARD_VECS
Install and initialize the hardware vectors
3DH
DEBUG_MOUSE_INIT
Clear keyboard buffer for search and Init the Mouse
3EH
DEBUG_KEYB_SET_LEDS_1
Send keyboard command to Update keyboard NUMLOCK status
3FH
DEBUG_OEM_DEVICE_CONFIG
special init of COMM and LPT ports