Denon AVR-S730H Service Manual

YES
YES
YES
Check the I2C communication line. (HDMI Rx/TX)
Check item(8). Check the I2C communication line :
Check the CPU.
Is the "I2C" waveform of the TP HDMI Rx/Tx [IC721] correct (like
the one shown in the diagram) when the power is turned on?
IC720
P_CK
P_DA
HDMI Rx/Tx [IC721] is
faulty. Replace with a
new device.
HDMI SW [IC701] is
faulty. Replace with a
new device.
CPU [IC751] is faulty.
Replace with a new
device.
HDMI Rx/Tx[IC721] is faulty.
Replace with a new IC.
Recheck from check item (1).
If it does not work, replace the PCB.
Check item(9). Check the I2C commu-
nication line :
Check HDMI Rx/Tx [IC721], CPU[IC751]
patterns as well as soldering.
If there is no problem, go to the next
step.
Check the HDMI SW.
Remove the damping resistor
[R7147/R7149] of [IC701].
Is the "I2C" waveform correct?
Recheck from check item (1).
If it does not work, replace the PCB.
Check the HDMI Rx/Tx.
Remove the damping resistor
[R7229/R7231] of [IC721].
Is the "I2C" waveform correct?
NO
NO
YES YES NO
*The diagram shows an example.
(Signal patterns vary depending on the tim-
ing.)
Points for checking waveforms
- Crest value (3.3 V normally)
- Signal change
- SCL frequency (400 kHz normally )
Voltage scale：1.0V/div
Time scale：10us/div
81
Caution in
servicing
Electrical Mechanical Repair Information Updating

Denon AVR-S730H Specifications

General

Channels	7.2
Power Output (6 ohm, 1 kHz, 0.7% 2ch Drive)	110W
Power Output (6 ohm, 1 kHz, 10% 1ch Drive)	165W
HDMI Inputs	6
HDMI Outputs	1
Dolby Atmos	Yes
DTS:X	Yes
DTS Virtual:X	Yes
Wi-Fi	Yes
Bluetooth	Yes
HEOS Multi-room	Yes
4K Ultra HD Pass-through	Yes
HDR Support	Yes (HDR10, Dolby Vision, HLG)
Auto Speaker Calibration	Audyssey MultEQ
AirPlay	Yes (AirPlay 2)
Internet Radio	Yes
Phono Input	No
Ethernet Port	Yes
Power Output per Channel	75W (8 ohm, 20Hz-20kHz, 0.08% 2ch Drive)
USB Input	1 (Front)