Troubleshooting - GeoVision GV-Keyboard User Manual

9. Troubleshooting

Problem
No power to Keyboard
Keyboard has power but
does not respond to any
buttons pressed
Keyboard responds to
some, but not all buttons
Message "Connect fail "
displays on LCD
Keyboard LEDs not
visible
Checklist
Check USB connection.
If you are using the RS-232 port or RS-485 port for
connection, make sure to connect the power adaptor.
Check that Keyboard is not locked. See "Getting started",
6. Programming and Operation on page 15.
Check if Keyboard keys are conflicting with other
applications. See 8. Shortcut Key Conflict Test on page 18.
Verify that the selected ID in Mulitcam Controller is
consistent with the DVR ID. See "Changing DVR ID",
6. Programming and Operation on page 15.
Check that the COM port setting in Mulitcam Controller is
correct. See Step 5 of 3.1 USB Driver on page 8.
If multiple GV-Systems are daisy-chained together,
(1) check connections among GV-Systems, and
(2) turn on Terminal Resistance to increase frequency
response.
If you are using the wall terminal block, check
(1) terminal screws are not loose,
(2) the RS-485 + and RS-485 - cables are attached to the
appropriate terminal screws. See 2.4 Wall Terminal
Block on page 6.
Yellow POWER LED: check the power source.
When you press any key, you can't see the RX or TX LEDs.
Red RX LED: check the connection between Keyboard and
GV-System.
Green TX LED: check if Keyboard is malfunctioning.
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