IBM Aptiva 2174, Hardware Maintenance Service

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40
9
ROM Checksum Error
Enter BIOS Setup and load the default setting.
CMOS battery.
System board
10
CMOS shutdown Register
Read/Write Error
Enter BIOS Setup and load the default setting.
CMOS battery.
System board
11
Cache Memory Bad--Do
not Enable Cache
CPU
System board
NOTE:
Do not press <Ctrl><Alt><Shift><+> to enable
cache.
Table 2-3 Error Symptoms List
NOTE: To diagnose a problem, first find the error symptom in the left column. If directed
to a check procedure, replace the FRU indicated in the check procedure. If no
check procedure is indicated, the first Action/FRU listed in right column is the
most likely cause.
Error Symptoms Action/FRU
Processor / Processor Fan
NOTE:
Normally, the processor fan should be operative, and the processor clock
setting should be exactly set to match its speed requirement before
diagnosing any processor problems.
Processor fan does not run but
power supply fan runs. Ensure that the system is not in power saving mode
. See “Power Management” on page 5.
With the system power on, measure the voltage of
processor fan connector J17. Its reading should be
+12Vdc. See “Machine Type 2174 System Board
Jumpers and Connectors” on page 107 .
Processor fan.
System board.
Processor test failed. Processor.
System board.
System Board and Memory
Table 2-2 BIOS Error Beeps List
(Continued)
NOTE: To diagnose a problem, first find the BIOS POST error beeps in left column. If
directed to a check procedure, replace the FRU indicated in the check
procedure. If no check procedure is indicated, the first Action/FRU listed in right
column is the most likely cause.
BIOS Error Beeps Action/FRU