Bios Post Codes - Siemens SIMATIC Rack PC 840 V2 Operating Instructions Manual

12.2

BIOS POST codes

12.2
The following section lists the POST codes relevant to users in the sequence in which they
occur: Contact Customer Support for all other POST codes.
Display
(hex)
16H
28H
2AH
2CH
2EH
30H
38H
3AH
22H
3CH
49H
55H
4AH
5CH
60H
62H
90H
95H
98H
BCH
00H
SIMATIC Rack PC 840 V2
Operating Instructions, Edition 05/2006, A5E00248055-04
Meaning
TP_CHECKSUM
TP_SIZE_RAM
TP_ZERO_BASE
TP_ADDR_TEST
TP_BASERAML
TP_BASERAMH
TP_SYS_SHADOW
TP_CACHE_AUTO
TP_8742-TEST
TP_ADV_CS_CONFIG
TP_PCI_INIT
TP_USB_INIT
TP_VIDEO
TP_MEMORY_TEST
TP_EXT_MEMORY
TP_EXT_ADDR
TP_FDISK
TP_CD
TP_ROM_SCAN
TP_PARITY
Description
BIOS checksum test
Determine DRAM size
Set base RAM 64KB to 0
Check address busses
BaseRam Low
BaseRam High
BIOS is copied to DRAM
Determine CPU cache
Test keyboard controller
Configure the advanced
chip set
Initialize the PCI interface
Activation of the USB
hardware
Initialize the video interface
Test of the system memory
Test of the complete
memory
Test of the address busses
Initialization and test of the
hard disk hardware
Initialization and test of the
CD hardware
Search for BIOS
expansions
Test of the memory
modules
BIOS Power On Self Test
completed. Loading
operating system
Alarm, error and system messages
12.2 BIOS POST codes
Remedy
Service event
Replace memory modules
Replace memory modules
Replace memory modules
Replace memory modules
Replace memory modules
Replace memory modules
Exchange CPU
Check if keyboard is connected or
defective
Test by switching off the hardware
components in Setup
Test by switching off the hardware
components in Setup or removing
installed expansion modules from
the bus module
Removal of USB devices
Replace memory modules
Replace memory modules
Replace memory modules
Disconnect hard disk, replace if
necessary
Disconnect CD ROM, replace if
necessary
Test by switching off the hardware
components in Setup or removing
installed expansion modules from
the bus module
Replace memory modules
12-3