LG BPM55 Service Manual page 24

DIGITAL DISPLAY & MEDIA TRAINING MASTER
2-5. Invalid Format or Format Not Supported
Is the display
HDCP compliant?
YES
Has the customer tried the
device on another display?
YES
Has the customer tried
another cable?
Make sure the display is HDCP compliant when using a DVI or
NO
HDMI connection. A lack of HDCP compliancy on the display may
cause an invalid format or format not supported message to appear.
It can also cause a copy protection OSD to appear.
Ask the customer to connect the device to another display.
NO
If the device starts working, then the problem may be the original display.
The customer will need to troubleshoot the display. If the device
still does not work, then the problem may be the device or the cable.
Ask the customer to replace the cable between the device and display.
NO
If the problem is corrected, then the problem was with the cable.
If the problem continues, then the device is the problem.
Set up service according to in warranty or out of warranty procedures.
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