Denon AVR-X4500H Service Manual

3-2. Protection History Display Mode
3-2.1. Actions
This mode enables the unit to record and display the event when the THERMAL, ASO or DC protection is
activated.
If protections have been activated multiple times, the latest protection operation is recorded.
3-2.2. Starting up
While holding down buttons "
ZONE3 SOURCE
" and "
STATUS
" simultaneously, press the power button
to turn on the power.
Select the "
2. PROTECTION
" using the "
CURSOR
f
/
d
" button, then press the "
ENTER
" button to
conrm.
3-2.3. Protection information and displays
• Press the "
STATUS
" button in Protection History Display Mode.
• The protection history can be checked.
(1) If no protections has occurred.
L1
PROTECT HISTORY
L2
:NO PROTECT
(2) ASO (if the last protection is ASO)
L2
:ASO
Cause A short circuit occurred between the speaker terminals, or speakers with an impedance outside
the rating were connected.
Note : Short circuits in speaker terminals or speakers can be identied.
If the power is turned on in the abnormal state, protection is activated after around 6 seconds and the
power is turned off.
(3) DC (if the last protection is DC)
L2
:DC
Cause : DC output of the power amplier is abnormal.
If the power is turned on in the abnormal state, protection is activated after around 6 seconds and the
power is turned off.
(4) Case of THERMAL (when the last protection incident is THERMAL(E) protection)
L2
:THERMAL E
Cause : Abnormal heat sink temperature.
If the power is turned on in the abnormal state, protection is activated after around 180 seconds and the
power is turned off.
(5) Case of CURRENT (when the last protection incident is CURRENT protection)
L2
:CURRENT
Cause : An over current owed in power amp.
If the power is turned on in the abnormal state, protection is activated after around 90 seconds and the
power is turned off.
Caution : These protections may also be activated due to other factors such as disconnection of
connectors or operations around the microcomputer.
After viewing the above protection history, press the "
STATUS
" button to return to the normal display.
Before Servicing
This Unit
Electrical Mechanical Repair Information Updating
155

Denon AVR-X4500H Specifications

General

Display	-
Quantity	1
HDCP version	2.2
Apple docking	No
Product color	Silver
Audio decoders	DTS:X, Dolby Atmos, Dolby Surround, Dolby TrueHD
Volume control	Rotary
Audio amplifier	Yes
Multi-Zone quantity	3
Connector contacts plating	Gold
Receiver type	Surround
Frequency range	10 - 100000 Hz
Audio output channels	9.2 channels
Signal-to-Noise Ratio (SNR)	100 dB
Power output per channel (20-20KHz@8 Ohm)	125 W
FM band range	87.5 - 108 MHz
Supported radio bands	AM, FM
Internet radio services supported	Amazon Music, Deezer, Napster, Pandora, SIRIUS Internet Radio, Spotify, Tidal, TuneIn, iHeartRadio
HDMI in	8
Audio (L/R) in	5
Composite video in	4
Component video (YPbPr/YCbCr) in	2
Connectivity technology	Wired
AC input voltage	230 V
AC input frequency	50 Hz
Power consumption (standby)	0.1 W
Power consumption (typical)	710 W

Weight and Dimensions

Depth	389 mm
Width	434 mm
Height	167 mm
Weight	13500 g