User's Manual

Troubleshooting
28 Issue 1 November 1998
4. Has a master kit been purchased? If so, the wallboard must
be on an RS-485 network. See the wiring diagram in the
master kit instructions.
5. Check the EPROM in the wallboard. The EPROM is located
in the right endcap. Remove the right endcap and verify that
the EPROM label part number is one of the following. If it is
not, contact your Lucent Technologies representative or
authorized dealer and request the correct EPROM:
■ WB1/IW1 wallboard—1018-4403 revision level J or
later
■ WB2/IW2 wallboard—1018-5403 revision level J or
later
■ WB3/IW3 wallboard—1018-6403 revision level J or
later
6. Check the jumper underneath the EPROM. It must be set for
RS-485 (see “Setting the Jumper” on page 25).
7. Check to see that the wallboard is connected to the correct
COM port on the BCMS Vu PC.
8. Is the converter box plugged in and working? Check the
power light on the box.
9. Is the BCMS Vu PC transmitting to the converter box and the
box transmitting to the wallboard? Check the RXD and the
TXD lights on the converter box. If they are flashing, there is
communication with the wallboard. Check the output cable
on the box and to the wallboard.
10. Is the cable plugged into the BCMS Vu PC and the converter
box? If it is plugged in correctly and there still is no flashing
light on the converter box, make sure you have the BCMS
Vu software to drive the wallboard.
11. Check the cable on the back of the wallboard. Make sure it is
plugged into the RS-485 connector.
12. Send the wallboard in for repair.