Post Errors/Beep Codes - Samsung Sens Q20 Series Service Manual

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1-4 POST Errors / Beep Codes
Error Codes Beep Codes
02
04
06
08
09
0A
0C
0E
0F
10
11
12
14
16
18
1A
1C
20
22
24
28
2A
2C
2E
32
34
35
37
38
39
3A
3C
3D
40
42
44
46
48
49
4A
4C
4E
50
51
52
54
56
58
5A
5C
Sens Q 20
1-1-1-3 Verify Real Mode
1-1-2-1 Get CPU type
1-1-2-3 Initialize system hardware
1-1-3-1 Initialize chipset registers with initial POST values
1-1-3-2 Set in POST flag
1-1-3-3 Initialize CPU registers
1-1-4-1 Initialize cache to initial POST values
1-1-4-3 Initialize I/O
1-1-4-4 Initialize the local bus IDE
1-2-1-1 Initialize Power Management
1-2-1-2 Load alternate registers with initial POST values
1-2-1-3 Restore CR0 after CPU is reset
1-2-2-1 Initialize keyboard controller
1-2-2-3 BIOS ROM checksum
1-2-3-1 8254 timer initialization
1-2-3-3 8237 DMA controller initialization
1-2-4-1 Reset Programmable Interrupt Controller
1-3-1-1 Test DRAM refresh
1-3-1-3 Test 8742 Keyboard Controller
1-3-2-1 Set ES segment register to 4 GB
1-3-3-1 Autosize DRAM
1-3-3-3 Clear 512K base RAM
1-3-4-1 Test 512K base address lines
1-3-4-3 Test 512K base memory
1-4-1-3 Test CPU bus-clock frequency
1-4-2-1 Test CMOS RAM
1-4-2-2 Initialize alternate chipset registers
1-4-2-4 Reinitialize the chipset(MB only)
1-4-3-1 Shadow system BIOS ROM
1-4-3-2 Reinitialize the cache (MB only)
1-4-3-3 Autosize cache
1-4-4-1 Configure advanced chipset registers
1-4-4-2 Load alternate registers with CMOS values
2-1-1-1 Set initial CPU speed
2-1-1-3 Initialize interrupt vectors
2-1-2-1 Initialize BIOS interrupts
2-1-2-3 Check ROM copyright notice
2-1-3-1 Check video configuration against CMOS
2-1-3-2 Initialize PCI bus and devices
2-1-3-3 Initialize all video adapters in system
2-1-4-1 Shadow video BIOS ROM
2-1-4-3 Display copyright notice
2-2-1-1 Display CPU type and speed
2-2-1-2 Initialize EISA board
2-2-1-3 Test keyboard
2-2-2-1 Set key click if enabled
2-2-2-3 Enable keyboard
2-2-3-1 Test for unexpected interrupts
2-2-3-3 Display prompt "Press F2 to enter SETUP"
2-2-4-1 Test RAM between 512 and 640K
Meaning
1 Specifications
1-5