Siemens PANEL PC 877 User Manual

Alarm, error and system messages

13.3 BIOS beep codes

SIMATIC Panel PC 877
Operating instructions, Release 07/2006, A5E00877780-01

13-5

13.3

BIOS beep codes

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.

Hex

code of

the beep

codes

Meaning

Description

Remedy

16H

TP_CHECKSUM

BIOS checksum test

Service event

28H

TP_SIZE_RAM

Determine DRAM size

Replace memory modules

2AH

TP_ZERO_BASE

Set base RAM 64KB to 0

Replace memory modules

2CH

TP_ADDR_TEST

Check address busses

Replace memory modules

2EH

TP_BASERAML

BaseRam Low

Replace memory modules

30H

TP_BASERAMH

BaseRam High

Replace memory modules

38H

TP_SYS_SHADOW

BIOS is copied to DRAM

Replace memory modules

3AH

TP_CACHE_AUTO

Determine CPU cache

Exchange CPU

22H

TP_8742-TEST

Test keyboard controller

Check if keyboard is connected or

defective

3CH

TP_ADV_CS_CONFIG Configure the advanced

chipset

Test by switching off the hardware

components in Setup

49H

TP_PCI_INIT

Initialize the PCI interface

Test by switching off the hardware

components in Setup or removing

installed expansion modules from

the bus module

55H

TP_USB_INIT

Activation of the USB

hardware

Removal of USB devices

4AH

TP_VIDEO

Initialize the video interface

5CH

TP_MEMORY_TEST

Test of the system memory Replace memory modules

60H

TP_EXT_MEMORY

Test of the complete

memory

Replace memory modules

62H

TP_EXT_ADDR

Test of the address busses Replace memory modules

90H

TP_FDISK

Initialization and test of the

hard disk hardware

Disconnect hard disk, replace if

necessary

95H

TP_CD

Initialization and test of the

CD hardware

Disconnect CD ROM, replace if

necessary

98H

TP_ROM_SCAN

Search for BIOS

expansions

Test by switching off the hardware

components in Setup or removing

installed expansion modules from

the bus module

BCH

TP_PARITY

Test of the memory

modules

Replace memory modules

00H

BIOS Power On Self Test

completed. Loading

operating system