System Exerciser - Digital Equipment VAXstation 3100 Maintenance Manual

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Troubleshootlng 55
2.20.1.2 System Exerciser
To run the system exerciser in the Field Service mode on the 8-plane graphics
coprocessor module, follow these steps.
1. Install the loopback on the communication port.
2. If using a monochrome monitor, attach the two 75-ohm terminators to
the video cable's red and blue connectors. If these terminators are not
used, the system exerciser returns a hard readback error (XXXX.0020 or
X:XXX.0021 or XXXX.0022 or XXXX.0023).
3. Enter TEST 80000106 at the console prompt>>>.
4. Enter 4 at the?>>> prompt.
To run the system exerciser in customer mode, do not install any loopbacks
and enter T 0 at the console prompt>>>. If using a monochrome monitor,
the system exerciser returns a status message (0020.XXXX or 0021.XXXX)
for the 8-plane graphics module (8PLN). With no terminators, ignore the
XXXX field for status message. Replace the graphics module if any error
code is indicated.
If
the error still exists after replacing the 8-plane graphics
coprocessor module, replace the system module.
Appendix F contains a complete listing of the system exerciser error codes.
2.21 TEST 1 -
NI -
Ethernet Network
The Ethernet network (NI) circuits control the communication protocol over
the Thin Wire or standard Ethernet cabJes. The system contains a Thin wire
Ethernet port and a standard Ethernet port on the back of the system box. A
switch determines which Ethernet port is enabled for transmission of IEEE
803.2 protocol and an LED lights next to the enabled port.
A code of 0000.0001 (self-test) next to the NI mnemonic indicates no errors
detected with the Ethernet circuits.
If
an error code of xxxx.7001 or higher
for ThinWire Ethernet or 0011.700E for standard Ethernet is listed, check the
termination of the enabled Ethernet port on the back of the system box and
retest. These two codes indicate that the external Ethernet network cable is
not terminated properly (for instance, no loopback on the enabled port). A
code of 0100.0001 is normal with the standard Ethernet port enabled until the
external Ethernet network is operational. Be sure to set the Ethernet switch
to enable the correct Ethernet port. Replace the system module if any other
code is listed.
A code of 0000.0001 (system exerciser) next to the NI mnemonic indicates
no errors detected with the Ethernet circuits. Replace the system module if
any other code is listed.