Service manual

Chapter 4 Troubleshooting Procedures 4-11
■ Watch-Net Diagnostic—page 4-11
■ Watch-Net-All Diagnostic—page 4-12
■ Probe-SCSI and Probe-SCSI-All Diagnostic—page 4-13
■ Test alias name, device path, -All Diagnostic—page 4-14
■ UPA Graphics Card Diagnostic—page 4-15
4.6.1 Watch-Clock Diagnostic
The watch-clock diagnostic reads a register in the NVRAM/TOD chip and displays
the result as a seconds counter. During normal operation, the seconds counter
repeatedly increments from 0 to 59 until interrupted by pressing any key on the Sun
Type-5 keyboard. The watch-clock diagnostic is initialized by typing the
watch-clock command at the ok prompt. The following code example identifies
the watch-clock diagnostic output message.
4.6.2 Watch-Net Diagnostic
The watch-net diagnostic monitors Ethernet packets broadcast on the Ethernet
cable(s) connected to the system. Good packets received by the system are indicated
by a period (.) displayed on the screen. Errors such as Framing error and Cyclic
Redundancy Check (CRC) error are indicated with an X and an associated error
description.
CODE EXAMPLE 4-1 Watch-Clock Diagnostic Output Message
{0} ok watch-clock
Watching the ‘seconds’ register of the real time clock chip.
It should be ‘ticking’ once a second.
Type any key to stop.
39
{0} ok