Denon AVR-X520BT Service Manual

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4.4.4.ProtectionHistoryDisplayMode
To enter the Product Mode, to display the Protection History Display Mode.
(1) If no protections have occurred.
FLD
N O P R O T E C T
(2) For THERMAL (when the last protection incident was THERMAL(A) or THERMAL(B) protection)
FLD
P R T : T H E R M A L A
FLD
P R T : T H E R M A L B
Cause: The temperature of the heat sink is excessive.
If the power is turned on without correcting the abnormality, the protection function will work about 4 minutes
later and the power supply will be shut off.
(3) For ASO (when the last protection incident was ASO protection)
FLD
P R T : A S O
Cause: The line between speaker terminals is shorted, or speakers with impedance of less than the rated value.
Supplementaryinformation: As the excess current is detected after operation of the speaker relay, a short on the
speaker terminal and the connected speaker can be identied.
(4) For DC (when the last protection incident was DC protection)
FLD
P R T : D C
Cause: DC output of the power amplier is abnormal.
If the power is turned on without correcting the abnormality, the protection function will work about 6 seconds
later and the power supply will be shut off.
(5) For Power (when the last protection incident was Power protection)
FLD
P R T : P o w e r
Cause: The Power Supply(±12V) is abnormal.
b
Additional causes of protection can be due to loose connections, associated components, Microprocessor, etc.
Press the button below to set On/Off. The display then return to the normal mode.
"PRESET -" (AVR-S510BT)
"TUNE -" (AVR-X520BT / X518CI)
f
Clearingtheprotectionhistory
There are two ways to clear the protection history, as described below.
(1) Start up the set in error (protection display) mode and display the error, then press and hold down the below button
for 3 seconds.
"PRESET -" (AVR-S510BT)
"TUNE -" (AVR-X520BT / X518CI)
f
FLD
P R T : D C
Press the button for 3 seconds.
FLD
P R T : C L E A R
The above is displayed and the protection history is cleared.
FLD
N O P R O T E C T
(2) Initialize this unit. (See page 21 page.)

Denon AVR-X520BT Specifications

General

Receiver type	Surround
Frequency range	10 - 100000 Hz
Input sensitivity	200 mV
Pre-out connectivity	Yes
Audio output channels	5.1 channels
Signal-to-Noise Ratio (SNR)	98 dB
Power output per channel (1KHz@6 Ohm)	90 W
Power output per channel (20-20KHz@8 Ohm)	70 W
HDMI in	5
Composite video in	2
USB ports quantity	1
Digital audio coaxial in	-
Connectivity technology	Wired
Speakers connectivity type	Clamp terminals
Ethernet LAN	No
AM band range	552 - 1611 kHz
FM band range	87.5 - 107.9 MHz
Supported radio bands	AM, FM
Product color	Black
Audio decoders	Dolby TrueHD, DTS 96/24, DTS-HD, DTS-HD Master Audio
AC input voltage	230 V
AC input frequency	50 Hz
Power consumption (standby)	0.3 W
Power consumption (typical)	330 W

Weight and Dimensions

Depth	319 mm
Width	434 mm
Height	151 mm
Weight	7500 g