Marantz MR235 - Audio Alignment Procedures; Voltage Conversion

3.4 AUDIO ALIGNMENT PROCEDURES
(Selector switch in the ““AUX”’ position)
|
Signal
Source
Wait 2 min. after power has been on.
Adjust R717 and R718 until distortion
for 0.25W output is minimum,
CAUTION: After adjustment, discon-
nect input signal, and
make certain that current
flowing from R741 to
R744 is 10 to 30 mA.
Distortion meter
used
AF oscillator
to AUX jack
Distortion meter to SPK OUT
terminals with 42 load.
DC voltmeter in 100 mV or
50 mV range to R741 (R743)
and R742 (R744).
Adjust R717 and R718 until current is
Voltmeter
used
10mA
4, VOLTAGE CONVERSION
The Model 1530/MR230/MR235 is equipped with a uni-
versal power transformer that may be adjusted to operate
at 110 V, 120 V, 220 V, or 240 V AC at 50 to 60 Hz. To
convert the unit to a different power source voltage, reposi-
tion conversion plug at shown in Figure 2.
CAUTION: DISCONNECT POWER SUPPLY CORD
FROM AC OUTLET BEFORE CONVERT-
ING VOLTAGE.
ef & @®
For 110V Operation For 120V Operation For 220V Operation For 240V Operation
Figure 2. Voltage Conversion Chart