Contact Support - Denon AVR-X2500H Service Manual

3. Starting detecting the point of failure
Check item(1).
Check the power supply status and communication status with the CPU of each device.
Start in HDMI Diagnostics mode and follow the procedures below.
(1) Start in HDMI Diagnostics mode
While the power is On, hold down buttons "TUNER PRESET CH -" and "ZONE2 SOURCE" for at least
3 seconds.
HDMI DIAGNOSTICS
"HDMI DIAGNOSTICS" is displayed.
When the mode has switched, start Hardware check.
Hardwarecheck...
(2-1) Display when an Error Code is displayed.
Err: H1-XX
Alternating display.

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Check the Error Code table items.
Error Code table
Error Code Check item No.
H1-01 Check item (6) Communication Error with HDMI Tx
H1-02 Check item (11) Communication Error with HDMI SW1
H1-03 Check item (16) Communication Error with HDMI SW2
H1-04 Check item (29) Communication Error with TMDS SW
H1-06 Check item (21) Communication Error with GUI IC
H1-08 Check item (30) Communication Error with DSP
H1-12 Check item (35) Communication Error with DIR
H1-14 Check item (26) DDR check Error
H1-15 Check item (27) Communication Error with GUI ROM
(2-2) Display when an Error is not detected.
Cancel the mode, and proceed to
Canceling the selected mode
Press the power button to exit off the power.
Description
[U1039 : MN864788]
[U1000 : MN864788]
[U1003 : MN864788]
[U1103 : TMDS261B]
[U1026 : ADV8003]
[U1073 : CS49844A]
[U1040 : PCM9211]
[U1028, U1029 : A3R12E40DBF-8E]
[U1027 : W25Q128JVFIQ]
93
1 Auto Test
check item (2).