Audio Section
Idling Current (1U-3232-1)
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
l
POWER (Power sourse switch)
→
OFF
l
SPEAKER (Speaker terminal)
→
No load (Do not connect speaker, dummy resistor, etc.)
Adjustment
(1) Remove top cover and set VR501, VR502, VR503, VR504, VR505, on 1U-3232-1 (Power Unit) at counterclockwise
(
) fully.
(2) Connect DC Voltmeter to test points (FRONT-Lch: TP501, FRONT-Rch: TP502, CENTER ch: TP505, SURROUND-Lch:
TP503, SURROUND-Rch: TP504).
(3) Connect power cord to AC Line, and turn power switch "ON".
(4) Presetting.
MASTER VOLUME : "---" counterclockwise (
min.)
MODE
: 5CH STEREO
FUNCTION
: CD
(5) Allow 2 minutes, and turn VR501 clockwise (
) and adjust the TEST POINT voltage to 1.5 mV
±
0.5 mV DC.
(6) After 10 minutes from preset, turn VR501 to set the voltage to 3 mV
±
0.5 mV DC.
(7) Adjust the Variable Resistors of other channels in the same way.
(8) After 5 minutes from (6), turn VR501 to set the voltage to 3 mV
±
0.5 mV DC.
(9) Adjust the Variable Resistors of other channels in the same way.
12
AVR-2801/981
VR504
TP504
VR502
TP502
VR505
TP505
VR501
TP501
VR503
TP503
S Rch
F Rch
Cch
F Lch
S Lch
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