Specifications

209
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APPENDIX F • TROUBLESHOOTING
If this happens...
I can’t change the unit number.
I can’t upload firmware.
I can’t upload firmware or change the unit
number.
The front panel LEDs flash green and
amber.
The Power LED is green, the unit accepts
programming, but the Remote/Local LED
is off.
The LEDs are a solid amber color.
Remote/Local LED is red and no
commands are being issued.
The VRC unit loses its programming
every time the power is cycled off an on.
I am running Windows
®
98 and I am
getting DCOM errors.
Try this...
Connect to the DIRECT port on the back
of the VRC unit.
Use only the provided null-modem cable.
Connect to the DIRECT port on the back
of the VRC unit.
Use only the provided null-modem cable.
Install jumper JP9 and power cycle the
unit. Remove the jumper and proceed
with the upload firmware process and
assign the unit number.
The unit needs to be returned to the
manufacturer for repairs.
The unit needs to be returned to the
manufacturer for repairs.
Use the JP9 jumper to clear the firmware
from the I/O module and then reload the
firmware.
The unit needs to be returned to the
manufacturer for repairs.
Press the Remote/Local button to switch
the unit to remote mode.
Verify that the JP9 jumper is disengaged.
If disengaged, the jumper will be
connected to one pin. If the jumper is
engaged, both pins will be jumpered and
your unit's memory will be cleared each
time the unit is power cycled.
Choose “run” from the start menu. Type
“command” and click ok. Change the
directory by typing “cd
C:\WINDOWS\SYSTEM\DCOM98\OLDO
LE”. Type “uninstall” and follow the
instruction prompts. Reboot your machine
to complete the uninstall. Re-installing the
VRC2500 software will install the updated
version of DCOM.
It could be that...
You are not connected to the DIRECT
port.
The serial cable is not compatible.
You are not connected to the DIRECT
port.
The serial cable is not compatible.
Unit needs to be reset.
Unit has a defective chip.
Unit has a hardware failure.
The firmware is corrupt.
Unit has a hardware failure.
The VRC unit is in local mode.
JP9 jumper is not properally connected.
The DCOM version you are running is
older than the version the software is
trying to install.