Adjustment; Audio Section - Denon AVR-4308CI Service Manual

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ADJUSTMENT

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Audio Section

Idling Current (1U-3801-1)
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)
SPEAKER (Speaker terminal)
(Do not connect speaker, dummy resistor, etc.)
Adjustment
(1) Remove top cover and set VR101, VR102, VR103,
VR104, VR105, VR106, VR107, on 1U-3801-1 (Power
Amp Unit) at fully counterclockwise (
(2) Connect DC Voltmeter to test points (FRONT-Lch:
TP101 pin, FRONT-Rch: TP101
CENTER ch: TP101
pin, SURROUND-Rch: TP102
SURROUND BACK-Lch: TP102
BACK-Rch: TP102
(3) Connect power cord to AC Line, and turn power switch
"ON".
(4) Presetting.
MASTER VOLUME : "---" counterclockwise (
MODE
FUNCTION
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L 13942296513
(5) Allow 2 minutes, and turn VR101 clockwise (
adjust the TEST POINT voltage to 6.5 mV
(6) After 10 minutes from preset, turn VR101 to set the
voltage to 8 mV
(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.
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No load
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pin, SURROUND-Lch: TP102
pin,
pin, SURROUND
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: 7CH STEREO
: CD
0.5 mV DC.
0.5 mV DC.
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