Siemens SIMATIC PANEL PC 877 - Manual (Page 165)

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
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