Denon AVR-X4100W Service Manual page 106

(11) Are a picture and sound output when a different Blu-ray/DVD
player is used?
Check the TV.
(12) Does the TV support HDCP?
(13) Does the TV support 1080P/4K?
(14) Is HDMI input set on the TV?
(15) Are a picture and sound output when a different TV is used?
Check the unit.
Check the firmware.
Is "IP SCALER ERR" displayed?
(See 21 page)
See "AVR-X4100W_HDMI Rx-Tx Failure Detection Procedure Manual
ver_1.00" of SDI.
NO
YES
YES
YES
YES
NO
YES
The Blu-ray/DVD player is faulty.
NO
Use a TV that supports HDCP. Computer monitors can-
not be used.
NO
If the TV does not support 1080P/4K, a picture cannot be
output even if the Blu-ray/DVD player is set to 1080P/4K.
NO
Check the instruction manual of the TV and check the
input setting.
NO
The TV is faulty.
•Check the circuits around the IP SCALER (IC401) and
YES
DDR2 (IC402/403).
If there appear to be no problems, IC401 or IC402/403 is
faulty.
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