Denon AVR-X520BT

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℃(59°F~86°F)andstandardhumidity.
(2) Presetting
 •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VR510(FL),VR550(FR),VR530(C),VR520(SL)andVR540(SR)oftheMAINPCB
counterclockwise(c)asfaraspossible.
(2) ConnectDCVoltmetertothetestpoints.
 FRONT-Lch   :CN510
 FRONT-Rch   :CN550
 CENTERch   :CN530
 SURROUND-Lch  :CN520
 SURROUND-Rch  :CN540
(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   :CBL/SAT
(5) TurnVR510clockwise(
x
)andadjustthevoltageofthetestpointto"1.5mV ± 0.5mVDC."within2minutes.
(6) 10minutesafterthepreliminaryadjustment,turnVR510andsetthevoltageto"2.0mV ± 0.5mV DC".
(7) Adjustthevariableresistanceofeachchannelusingthesamemethod.(VR520-VR550).
CN540VR540VR510 CN510 VR520 CN520 VR530 CN530 VR550 CN550
F Lch
S Lch
C ch
S Rch
F Rch
DC Voltmeter
MAIN PCB
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