Method Of Adjustments; Idling Current - Denon PMA-2000IVR Service Manual

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METHOD OF ADJUSTMENTS

VR501
1U-3432-1
Power Amp P.W.B. (L)
TE
L 13942296513

IDLING CURRENT

Setup
1. Lay the unit at an ordinary position away from a direct current from an air condition or fan. Do the adjustment at a
temperature between 15°C (59°F) and 30°C (86°F).
2. Set control as follows.
POWER SWITCH
VOLUME CONTROL
SPEAKER Terminals
Adjustment
1. Remove top cover. And then connect DC Voltmeter to test points of 1U-3432-1 (Lch) and 1U-3432-2 (Rch) Power Amp
Printing Wiring Board.
2. Connect power cord to AC wall outlet, and turn POWER switch "ON" (
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VR502 (Rch) clockwise so that the DC Voltmeter reads 12 ±0.5mV.
3. Then after 2 minutes warmup adjust VR501 and VR502 so that the DC Voltmeter reads 12 ±0.5mV.
4. And after 10 minutes warmup adjust VR501 and VR502 so that the DC Voltmeter reads 12 ±0.5mV.
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OFF ( ).
Fully counterclockwise in the minimum position (
(Main Volume and Semifixed resistors [VR501, 502])
Open: do not connect the speakers, dummy load etc.
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2 9
8
Power
Trans
Power
Trans
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3 6 7 1 3 1 5
Main Volume
). Within 10 seconds turn VR501 (Lch) and
co
.
PMA-2000
9 4 2 8
DC Voltmeter
VR502
1U-3432-2
Power Amp P.W.B. (R)
0 5 8 2 9 9 4 2 8
).
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IV R
9 9
9 9
5