Denon AVR-X2500H Service Manual

ADJUSTMENT
Adjusting Idling Current
NOTE：Adjusting the idling current when "ECO Mode" is set may damage the Power AMP.
1. Preparation
(1) Prepare a DC voltmeter.
(2) Place the unit under normal usage conditions, away from highly ventilated areas such as next to an
air conditioning machine or electric fan.
The set requires an ambient temperature of 15℃ to 30℃ and standard humidity.
(3) Settings of This Unit
• POWER (Power source switch) STANDBY
• SPEAKER (Speaker terminal) No load
(Do not connect equipment such as speakers or dummy resistors.)
2. Adjustment Procedure
(1) Make sure that "ECO Mode" is off.
• Press the "
SETUP
" button on the remote control to display the GUI menu.
• Press the cursor button to select "General" → "ECO" → "Mode" → "Off".
(2) Remove the top cover and turn VR401 (ALL Channel) of the AMP PCB counterclockwise(
c
) as far as
possible.
(3) Connect the DC Voltmeter to the test points.
FRONT-Lch : CP501 : VR401
FRONT-Rch : CP502 : VR402
CENTER ch : CP503 : VR403
SURROUND-Lch : CP504 : VR404
SURROUND-Rch : CP505 : VR405
SURROUND-BACK Lch : CP506 : VR406
SURROUND-BACK Rch : CP507 : VR407
(4) Connect the power cord to an outlet. Next, press the power button to turn on the power.
(5) Set this unit as follows.
MASTER VOLUME : "---" (
c
min.) : turn counterclockwise to the lowest position.
SPEAKER (Speaker terminal) : No load
(Do not connect equipment such as speakers or dummy resistors.)
MODE : MCH STEREO
FUNCTION : DVD
(6) Turn VR401 clockwise (
x
) and adjust the voltage of the test point to "
8.0mV ± 0.5mV DC
" within 2
minutes.
(7) Check whether the voltage is within the range "
8.0mV +1mV/-2mV DC
" 10 minutes after adjust-
ment.
(8) Adjust the variable resistance of each channel using the same method.
S Lch F RchC ch S Rch S Back Lch S Back Rch
VR404
CP504
VR403
VR405
CP505
VR402
CP502
VR407
CP506
VR406
CP503
CP507
F Lch
CP501
VR401
DC Voltmeter
AMP UNIT
Before Servicing
This Unit
Electrical Mechanical Repair Information Updating
163

Denon AVR-X2500H Specifications

General

HDMI in	8
Composite video in	2
Ethernet LAN (RJ-45) ports	1
AirPlay	No
Display	-
Sample rate	196 kHz
HDCP version	2.2
Product color	Black
Audio decoders	DSD, DTS-HD, DTS:X, Dolby Atmos, Dolby Surround, Dolby TrueHD
Volume control	Rotary
RS-232 interface	Yes
Connectivity technology	Wired & Wireless
Receiver type	Surround
Frequency range	20 - 20000 Hz
Output impedance	8 Ω
Input sensitivity	200 mV
Audio output channels	7.1 channels
Signal-to-Noise Ratio (SNR)	100 dB
Total Harmonic Distortion (THD)	0.08 %
Power output per channel (1KHz@6 Ohm)	185 W
Power output per channel (20-20KHz@8 Ohm)	95 W
AC input voltage	230 V
AC input frequency	50 Hz
Power consumption (standby)	0.5 W
Power consumption (typical)	500 W
Audio formats supported	AAC, ALAC, DSD, FLAC, MP3, WAV, WMA
AM band range	520 - 1611 kHz
FM band range	87.5 - 108 MHz
Supported radio bands	AM, FM
Internet radio services supported	Deezer, Napster, Pandora, SIRIUS Internet Radio, Spotify, Tidal, TuneIn, iHeartRadio
Supported graphics resolutions	3840 x 2160

Weight and Dimensions

Depth	340.3 mm
Width	434.3 mm
Height	167.6 mm
Weight	9389 g