18
AVR-5803/AVC-A1SR
Audio Section
Idling Current (1U-3296-1, 2)
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
●
POWER (Power sourse switch)
→
OFF
●
SPEAKER (Speaker terminal)
→
No load (Do not connect speaker, dummy resistor, etc.)
Adjustment
(1) Remove top cover and set VR131, VR231, VR331 on 1U-3296-1 (Power Amp. L unit), VR132, VR232, VR332,
VR432 on 1U-3296-2 (Power Amp. R unit) at full counterclockwise (
) position.
(2) Connect DC Voltmeter to test points (FRONT-Lch: TP101, FRONT-Rch: TP102, CENTER ch: TP402, SURROUND-
Lch: TP201, SURROUND-Rch: TP202, SURROUND BACK-Lch: TP301, SURROUND BACK-Rch: TP302).
(3) Connect power cord to AC Line, and turn power switch "ON".
(4) Presetting.
MASTER VOLUME : "---" counterclockwise (
min.)
MODE
: 5CH/7CH STEREO
FUNCTION
: CD
(5) Within 2 minutes after the power on, turn VR131 clockwise (
) to adjust the TEST POINT voltage to 3 mV
±
0.5 mV
DC.
(6) After 10 minutes from the preset above, turn VR131 to set the voltage to 3 mV
±
0.5 mV DC.
(7) Adjust the Variable Resistors of other channels in the same way.
1U-3296-1
DC Voltmeter
VR131
TP101
VR231
TP201
VR331
TP301
1U-3296-2
VR132
TP102
VR232
TP202
VR332
TP302
VR432
TP402
Power Trans
