Denon PMA-425R - Method of Adjustments; Idling Current Adjustment

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METHOD OF ADJUSTMENTS
DC Volt Meter
1U-2859-1
Main Unit
(Component Side)
VR401
IDLING CURRENT
_@ Setup
1. Lay the unit at an ordinary position-away from a direct current from a cooler or fan. Do the adjustment at a femperatire
between 15°C (59°F) and 30°C (86°F).
2. Set controls as follows.
POWER SWITCH- OFF (mL)
VOLUME CONTROL- fully counterclockwise. (() min. [Main volume (VR401) and Semifixed resistors)
(VR201.:.Lch, VR202..:Rch) .
SPEAKER Terminals—> open: do notconnect the speakers, dummy load etc.
@ Adjustment
1. Remove Top cover. And then connect DC Voltmeter to Test points of 1U-2859-1 (Main Unit).
2.
Connect
Power
cord
to
AC
wall
outlet,
and
tum
Power
Switch
"on"
(a=)
.
Within
10
seconds
tum
VR201
(Lch)
and:
VR202 (Reh) clockwise so that DC voltmeter reads 17 + 3mV DC.
3. Then after 2 minutes warm up adjust VR201 and VR202 so that the DC Voltmeter reads 17 rf amV DC.
4.
And
after
10
minutes
warm
up
adjust
VR201
and
VR202
so
that
the
DC
Voltmeter
reads
11+
3mV
DC.
11