Denon AVR-S730H Service Manual

Check item(27). Check the communication line :
Check the CPU.
Is the waveform of the TP near the DIR [IC761] correct (like the one
shown in the diagram) when the power is turned on?
IC761
DR_CK
DR_DOUT
DR_CE
DR_DIN
Check item(28). Check the communication line :
Check DIR [IC761], CPU[IC751] patterns as well as soldering.
If there is no problem, go to the next step.
Check the communication line.
DIR [IC761] is faulty.
Replace with a new device.
YES
*The diagram shows an example.
(Signal patterns vary depending on the
timing.)
Points for checking waveforms
- Crest value (3.3 V normally)
- Signal change
- CLOCK frequency (about 2 MHz)
Voltage scale：2.0V/div
Time scale：2us/div
NOYES
Recheck from check item (1).
If it does not work, replace the PCB.
89
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)