Sun Microsystems Sun Blade 100, Service Manual

Page: 74 / 222

4-6 Sun Blade 100 Service Manual • October 2000
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
keyboard. The watch-clock diagnostic is initialized by typing the
watch-clock
command at the
ok
prompt. The following code example shows the
watch-clock diagnostic output message.
4.6.2 Watch-Net and Watch-Net-All Diagnostics
The watch-net and watch-net-all diagnostics monitor Ethernet packets on the
Ethernet interfaces connected to the system. Good packets received by the system
are indicated by a period (.). Errors such as the framing error and the cyclic
redundancy check (CRC) error are indicated with an “X” and an associated error
description. The watch-net diagnostic is initialized by typing the
watch-net
command at the
ok
prompt and the watch-net-all diagnostic is initialized by typing
the
watch-net-all
command at the
ok
prompt. The following code example
shows the watch-net diagnostic output message.
CODE EXAMPLE 4-2
shows the
watch-net-all diagnostic output message.
CODE EXAMPLE 4-1
Watch-Clock Diagnostic Output Message
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.
49
ok
CODE EXAMPLE 4-2
Watch-Net Diagnostic Output Message
ok watch-net
Hme register test --- succeeded.
Internal loopback test -- succeeded.
Transceiver check -- Using Onboard Transceiver - Link Up.
passed
Using Onboard Transceiver - Link Up.
Looking for Ethernet Packets.
'.' is a Good Packet. 'X' is a Bad Packet.
Type any key to stop.
..................................................