Adjustment - Denon AVR-X4200W Service Manual

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)
• SPEAKER (Speaker terminal)
(Do not connect equipment such as speakers or dummy resistors.)
2. Adjustment Procedure
(1) Remove the top cover and turn VR714, VR724, VR734, VR744, VR754, VR764, VR774 of the AMP PCB counterclock-
wise( c ) as far as possible.
(2) Connect the DC Voltmeter to the test points.
FRONT-Lch
FRONT-Rch
CENTER ch
SURROUND-Lch
SURROUND-Rch
SURROUND-BACK Lch
SURROUND-BACK Rch
(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
SPEAKER (Speaker terminal)
(Do not connect equipment such as speakers or dummy resistors.)
MODE
FUNCTION
(5) Turn VR714 clockwise ( x ) and adjust the voltage of the test point to "6.5mV ± 0.5mV DC" within 2 minutes.
(6) 10 minutes after the preliminary adjustment, turn VR714 and set the voltage to "8.0mV ± 0.5mV DC".
(7) Adjust the variable resistance of each channel using the same method.
DC Voltmeter
VR714
STANDBY
No load
： CN715
： CN725
： CN735
： CN745
： CN755
： CN765
： CN775
: "---" ( c min.) : turn counterclockwise to the lowest position.
: No load
: MCH STEREO
: DVD
AMP UNIT
SL-CH
FL-CH
C-CH
VR734
VR744
CN715 CN745
F Lch S Lch
SR-CH FR-CH
CN735
VR754
VR724
CN755
C ch S Rch
97
SBL-CH
SBR-CH
VR774
VR764
CN765
CN725
F Rch S Back Lch S Back Rch
CN775