Status Lights - HP E3494A Installation And Service Manual

Processor probe for powerpc 603/603e
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Solving Problems

Status Lights

The HP processor probe communicates various modes and error
conditions via the status lights. The meanings of the status lights are
shown on the previous page.
The following table gives more information about the meaning of the
power and target status lights.
= LED is off
= LED is on
= Not applicable (LED is off or on)
Power/Target Status Lights
Pwr/Target
LEDs
Meaning
HP processor probe is not connected to power supply
No target system power, or HP processor probe is not connected to the
target system
Only boot firmware is good (other firmware has been corrupted)
PowerPC CPU is in a checkstopped state. The CPU must be reset before it
can be run or stepped from this state but register and memory access is
available.
PowerPC CPU is stopped in the debug mode
PowerPC CPU is executing user code.
PowerPC CPU is in an unknown state. A reset from the HP processor
probe is required to clear this state.
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