Denon AVR-X3300W Service Manual page 155

ADJUSTMENT
Adjusting Idling Current
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) Remove the top cover and turn VR401 (ALL Channel) of the AMP PCB counterclockwise( c ) as far as
possible.
(2) 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
(3) Connect the power cord to an outlet. Next, press the power button to turn on the power.
(4) 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
(5) Turn VR401 clockwise ( x ) and adjust the voltage of the test point to "6.0mV ± 0.5mV DC" within 2
minutes.
(6) 10 minutes after the preliminary adjustment, turn VR401 and set the voltage to "8.0mV ± 0.5mV
DC".
(7) Adjust the variable resistance of each channel using the same method.
AMP UNIT
DC Voltmeter
VR404
CP501
VR401
VR403
CP504
F Lch S Lch
155
CP503
VR402
VR405
VR406 VR407
CP505
CP502
CP506
C ch S Rch F Rch S Back Lch
CP507
S Back Rch