AVR-1603/683
Audio Section
Idling Current
Required measurement equipment : DC Voltmeter
Preparation
(1) Avoid direct blow from an air conditioner or an electric fan, and adjust the unit at normal room tempereture
15 °C ~ 30 °C (59 °F ~ 86 °F).
(2) Presetting
I POWER (Power sourse switch)? OFF
I SPEAKER (Speaker terminal)? No load (Do not connect speaker, dummy resistor, etc.)
Adjustment
(1) Remove top cover and set VR101, VR102, VR103, VR104, VR105 on Amp. Unit at full counterclockwise ( )
position.
(2) Connect DC Voltmeter to test points (FRONT-Lch: TP104, FRONT-Rch: TP105, CENTER ch: TP103,
SURROUND-Lch: TP101, SURROUND-Rch: TP102).
(3) Connect power cord to AC Line, and turn power switch "ON".
(4) Presetting.MASTER VOLUME : "---" counterclockwise ( min.)
MODE: 5CH STEREO
FUNCTION: CD
(5) Within 2 minutes after the power on, turn VR101 clockwise ( ) to adjust the TEST POINT voltage to 1.5 mV ?0.5 mV
DC.
(6) After 10 minutes from the preset above, turn VR101 to set the voltage to 2.5 mV ?0.5 mV DC.
(7) Adjust the Variable Resistors of other channels in the same way.
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