Adjustment; Audio Section; Idling Current - Denon AVR-2105 Service Manual

ADJUSTMENT

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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
● POWER (Power sourse switch)
● SPEAKER (Speaker terminal)
Adjustment
(1) Remove top cover and set VR101, VR102, VR103, VR104, VR105 on Amp. Unit, VR106,107 on SURR.-BACK ch Amp.
Unit at full counterclockwise (
(2) Connect DC Voltmeter to test points (FRONT-Lch: TP104, FRONT-Rch: TP105, CENTER ch: TP103,
SURROUND-Lch:TP101, SURROUND-Rch:TP102, SURROUND-BACK Lch:TP106, SURROUND-BACK Rch:TP107).
(3) Connect power cord to AC Line, and turn power switch "ON".
(4) Presetting.
(5) Within 2 minutes after the power on, turn VR101 clockwise (
DC.
(6) After 10 minutes from the preset above, turn VR101 to set the voltage to 2.5 mV 0.5 mV DC.
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L 13942296513
(7) Adjust the Variable Resistors of other channels in the same way.
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OFF
No load (Do not connect speaker, dummy resistor, etc.)
) position.
MASTER VOLUME : "---" counterclockwise (
: 7CH STEREO
MODE
FUNCTION : CD
DC Voltmeter
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min.)
) to adjust the TEST POINT voltage to 1.5 mV 0.5 mV
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F Lch
S Lch
S BR
S BL
C ch
S Rch
F Rch
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AVR-2105/885 / AVC-1890
2 9 9 4 2 8
1 5 0 5 8 2 9 9 4
VR104
TP104
VR101,TP101
VR107
TP107
TP106
VR106
VR103,TP103
VR102
TP102
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VR105
TP105
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9 9
2 8 9 9