Denon AVR-890 Service Manual

23
AVR-2310CI/2310/890, AVC-2310
ADJUSTMENT
Audio Section
Idling Current
Required measurement equipment: DC Voltmeter
1. Preparation
(1) Avoid direct blow from an air conditioner or an electric fan, and adjust the unit at normal room temperature
15 °C ~ 30 °C (59 °F ~ 86 °F).
(2) Presetting
• POWER (Power source switch) OFF
• SPEAKER (Speaker terminal) No load
(Do not connect speaker, dummy resistor, etc.)
2. Adjustment
(1) Remove top cover and set VR101 FL, FR, C, SL, SR, on Main Amp. Unit, VR401, VR402 on 2ch- Amp.
Unit at fully counterclockwise (c) position.
(2) Connect DC Voltmeter to test points (FRONT-Lch: TP101, FRONT-Rch: TP105, CENTER ch: TP103, SURROUND-
Lch: TP102, SURROUND-Rch: TP104, SURROUND-BACK Lch: TP401, SURROUND-BACK Rch: TP402).
(3) Connect power cord to AC Line, and turn power switch "ON".
(4) Presetting.
MASTER VOLUME : "---" counterclockwise (c min.)
SPEAKER (Speaker terminal) : No load
(Do not connect speaker, dummy resistor, etc.)
MODE : 7CH STEREO (5CH STEREO)
FUNCTION : CD
(5) Within 2 minutes after the power on, turn VR101 clockwise (x) to adjust the TEST POINT voltage to 1.5 mV ± 0.5 mV
DC.
(6) After 10 minutes from the preset above, turn VR101 to set the voltage to 2.0 mV ± 0.5 mV DC.
(7) Adjust the Variable Resistors of other channels in the same way.
VR101SR
TP104
VR101FL
TP101
TP102
VR101SL
TP402
VR402
TP103
VR101C
VR101FR
TP105
F Lch
S Lch
S Back Rch
TP401
VR401
S Back Lch
C ch
S Rch
F Rch
DC Voltmeter
PCB MAIN ASSY
PCB 2CH ASSY

Denon AVR-890 Specifications

General

Brand	Denon
Model	AVR-890
Category	Stereo Receiver
Language	English