System
Board Errors
CPU Tests
Microprocessor Test – A microprocessor
failure will usually prevent the software from loading, and
will require a hardware tool such as the POST-Probe to diagnose
the problem. If this failure does appear, it indicates a problem
with the CPU chip.
Register Test – The
Register Test will exercise the internal registers of the
CPU. Failure is a defective CPU chip.
Arithmetic
Test – Indicates a bad CPU chip. Be aware that
some revisions of the 80386 have an error on 32-bit divides,
which will cause this test to fail but is not otherwise a
problem if the system has been running properly.
Logical Test – This
tests the logical functions of the CPU chip, which should
be replaced if the test fails.
NPU Tests
Coprocessor Test – Tests the general
functionality of the NPU chip.
Not Installed – The
NPU chip was not detected by the software. This indicates
a hard failure of the NPU chip, except in those few systems
with no NPU installed. Verify with the System Configuration
feature.
Register Test – Tests
the NPU registers and indicates failure of the chip.
Arithmetic – Tests
the floating-point calculations of the NPU. Failure indicates
replacement of the chip.
RTC Errors
RAM Data Failure – There is a failing
data bit in the memory associated with the Real Time Clock,
located in the CMOS/RTC chip.
RAM Address Failure –
This indicates a failing address line in the memory associated
with the RTC.
CRC Checksum Failure –
The CRC checksum does not equal the expected total.
CTC Errors
Port B Test Failed – This indicates
a failure of the secondary port of the Clock Timer chip.
CTC Register Failed –
Testing the internal registers of the CTC chip.
CTC Timer Failed –
Indicates failure of the timer circuitry of the CTC chip.
DMA Errors
Register Failure – Indicates a defective DMA
chip.
Page Register Failure –
Usually means a defective DMA chip, but some early PCs may
fail due to an incompatibility with the test even though the
chip is OK.
Keyboard Controller Errors
Keyboard Controller Test Failed
– Indicates either a defective keyboard or a failing
keyboard controller chip (8042). Use the Keyboard test to
differentiate.
PS/2 Mouse
Test Failed – Tests the PS/2 mouse portion
of an Enhanced Keyboard Controller. Failure may be the controller
chip, mouse port socket or cable, or the mouse itself. To
isolate the problem, run the test again with no mouse attached.
Interrupt Controller Errors
Register Test Failed – This indicates
a defective PIC chip.
APM Errors
(Advanced Power Management)
Cycle Fan On Failed – The failure could
be the fan control circuit or the fan itself. If possible,
the fan should be observed during the test to determine if
it is responding to the command.
Cycle Fan Off Failed –
The failure could be the fan control circuit or the fan itself.
If possible, the fan should be observed during the test to
determine if it is responding to the command.
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Click on the FEATURES link above for
a full listing of all the features!
- Works on all Intel™ compatible computers.
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