User manual

Compact Scaler Switcher (with PoC)
PTN Electronics Limited 29 www.PTN-electronics.com
7. Troubleshooting & Maintenance
1) When output image is with snowflake, such as the projector output with snowflake.
Generally this is not a unit faulty,
 Caused by a bad quality of cable. Please try another high quality cable.
 The video cables are loose, please connect again.
2) When it is not able to manage EDID, maybe the HDMI cable is broken or loose.
3) When user cannot control the switcher by computer through its COM port, please
check the COM port number in the software and make sure the COM port is in
good condition.
4) If the POWER indicator doesn’t work or no respond to any operation, please make
sure the power cord connection is good.
5) When switching , there is no output image:
 Check with oscilloscope or multimeter if there is any signal at the input/output
end. If there is no signal input/output, it may be the input/output connection
cord broken or the connectors loosen. Please change for another cable or
connect again.
 If it is still the same after the above checking, maybe there is something wrong
in the switcher. Please send it to the dealer for fixing.
6) If the static becomes stronger when connecting the video/audio connectors, it
probably due to the incorrect grounding, please correct it otherwise it would
damage the switcher.
7) If it is not able to control the scaler switcher from front panel buttons, but able
through RS232 commands, maybe the front panel buttons are locked. Please send
command 50605% to unlock.
8) If the scaler switcher cannot be controlled by the buttons on the front panel, RS232
port or IR remote, the switcher may have broken. Please send it to the dealer for
repairing.