Appendix - Troubleshooting - Channel Master CM-7002 Manual De Instrucciones

Appendix - Troubleshooting

If you have difficulty with your digital TV set-top receiver, there are several
possibilities you should investigate before calling Channel Master.
CAUTION: If the problems are still unsolved after you're done all of these. Do not disassemble
the device yourself! Please contact the dealer or a trained personal for assistance.
Problem
The Display on the front
panel does not light up
No sound and no picture
No signal when selecting
channels
Picture only but no sound
Sound only but no picture
Video and audio is out of
sync
Picture is still or mosaic
phenomenon
Remote control unit does
not work
Possible Causes What to Do
Power cord is not connected
The receiver is in standby
HDMI cable might be in the
wrong port
The antenna is disconnected
Program parameters are set
incorrectly
Audio cable is not connected
securely
System in MUTE mode
Volume is set to minimum
Audio setting parameter is
wrong
Video cable is not connected
securely
The current channel is in radio
mode
Audio out of sync
Signal is too weak
RCU is not aimed at the
sensor on the front panel
Not enough power in the
battery of the remote control
User Guide
Check that the power cord is
plugged into the power outlet
Press the POWER key on the front
panel to switch to operation mode
Check to make sure HDMI cable
is connected to HDMI Out to TV
Check antenna connection
Set correct parameters
Connect it securely
Press MUTE key on the RCU
to restore volume
Increase the volume to suitable
level
Please go to Audio Setting menu,
select proper audio mode and
proper audio language
Connect the video cable securely
Normal
In the MENU under Audio/Video
adjust the AV SYNC
Check to make sure that the
signal cord has been connected
tightly
Aim at the sensor on the front
panel
Change battery
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