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| A-604R, A-604R-G
4. ADJUSTMENTS
1) IDLE CURRENT ADJUSTMENT
A
1.Connect the measuring instrument as Fig. 4-1. (R409 or 410)
2.Set the VOLUME CONTROL to minimum.
3.Set the POWER switch to ON.
4.Adjust VR203 (VR204) so that the voltage between both sides of R409 (R410} becomes 16mV+3mV.
Note)
After turning on the power, wait at least 5 minutes before.
adjustment.
=
2) DC OFFSET ADJUSTMENT
1.Connect the measuring instrument as Fig. 4-1. (SP terminal)
2.Adjust VR201 {VR202) so that the voltage between speaker terminal becomes OmV20mvV.
Note)
After turning on the power, wait at least 5 minutes before.
starting the adjustment and complete the adjustment within
R
10 minutes after turning on the power.
DC Voltmeter
Mm
ae
ee a ee me
eee '
Front
POWER
AMP
Assy
[| o PUTT TTT TTT ttc
DC Voltmeter
C
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i]
SP Terminal
_
VOLTAGE
AMP
Assy
Cc
(Top
view)
Fig. 4-1
Adjustment
Method
31
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