5
5
AVR-3805 / AVC-3890
ADJUSTMENT 調整
Audio Section
Idling Current (1U-3469-1)
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
POWER (Power sourse switch) OFF
SPEAKER (Speaker terminal) No load
(Do not connect speaker, dummy resistor, etc.)
Adjustment
(1) Remove top cover and set VR101, VR102, VR201,
VR301, VR302, VR401, VR402, on 1U-3469-1 (Power
Unit) at fully counterclockwise (
).
(2) Connect DC Voltmeter to test points (FRONT-Lch:
TP301
1 2
pin, FRONT-Rch: TP101
5 6
pin,
CENTER ch: TP301
3 4
pin, SURROUND-Lch: TP101
3
4
pin, SURROUND-Rch: TP101
1
2
pin,
SURROUND BACK-Lch: TP301
7
8
pin, SURROUND
BACK-Rch: TP301
5
6
pin).
(3) Connect power cord to AC Line, and turn power switch
"ON".
(4) Presetting.
MASTER VOLUME : "---" counterclockwise (
min.)
MODE : 7CH STEREO
FUNCTION : CD
(5) Allow 2 minutes, and turn VR101 clockwise (
) to
adjust the TEST POINT voltage to 6.5 mV ±0.5 mV DC.
(6) After 10 minutes from preset, turn VR101 to set the
voltage to 8 mV ±0.5 mV DC.
(7) Adjust the Variable Resistors of other channels in the
same way.
(8) After 5 minutes from (6), turn VR101 to set the voltage to
8 mV ±0.5 mV DC.
(9) Adjust the Variable Resistors of other channels in the
same way.
(1U-3469-1)
: DC Voltmeter
(1)
15 30
(2)
OFF
( )
(1) 1U-3469-1
VR101, VR102, VR201, VR301, VR302, VR401, VR402
( )
(2) (FRONT-Lch: TP301
1
2
pin, FRONT-
Rch: TP101
5 6
pin, CENTER ch: TP301
3
4
pin,
SURROUND-Lch: TP101
3
4
pin, SURROUND-Rch:
TP101
1 2
pin, SURROUND BACK-Lch: TP301
7 8
pin, SURROUND BACK-Rch: TP301
5 6
pin) DC
Voltmeter
(3) AC100V 95 105V
"ON"
(4) ON
MASTER VOLUME
( )
SPEAKER
MODE : 7CH STEREO
FUNCTION : CD
(5) 2
VR101 ( )
6.5mV ±0.5mV DC
(6)
10 VR101
8mV ±0.5mV DC
(7)
(8) (6) 5 VR101
8mV ±0.5mV DC
(9)
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General
Weight and Dimensions
