Denon AVR-S730H Service Manual

Check item(24). Check the power supply voltage.
:
Does the power supply voltage of the DIR [IC761]
indicate the appropriate voltage (3.3V)?
The test points are as follows.
IC761
C7602
3.3V
Check item(25). Check the power supply voltage.
:
Check the power supply components [IC741,
Q7415] on the substrate and peripheral pattern.
If there is no problem, remove the DIR [IC761]
from the substrate and measure the voltage at
the test point of check item (24).
Is the power supply voltage correct (3.3 V)?
Check the power supply voltage.
Checking device. [IC761 : PCM9211]
Go to next page.
3-6. Error Code H1-12 failure detection procedure
NO
DIR [IC761] is faulty.
Replace with a new device.
Recheck from check item (1).
If it does not work, replace the PCB.
The power supply circuit is faulty.
Replace the PCB.
NOYES
YES
Check item(26). Checking the reset :
Check the CPU.
When the power is turned on, is the DIR [IC761 : 34pin] waveform
correct (as shown in the gure)?
IC761
34 pin
Checking the reset waveform.
Recheck from check item (1).
If it does not work, replace the PCB.
Check the reset circuit between CPU [IC751] and DIR [IC761].
If there is no problem, the DIR [IC761] is faulty.
Replace with a new device.
NOYES
Examples of conrmation waveform
Voltage scale：1.0V/div
Time scale：20ms/div
88
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)