Marantz 2270 - Voltage Conversion

8.3 No DC Balance
a. Check R762 and Zener diodes H762 and H763.
9. Voltage Conversion
This model is equipped with a universal power transformer to permit operation at 100, 120, 220
and 240 V AC 50 to 60Hz.
To convert the Model 2270 to the required voltage perform the following steps:
(1) Remove the top cover.
(2) Remove the Transformer Wire Connection Terminal Cover, loosen two Cover mounting
screws on the rear panel, see Fig. 1
(3) Change the jumper wires as illustrated in Fig. 2 for the required AC voltage and replace the
fuse as instructed.
CAUTION: DISCONNECT POWER SUPPLY CORD FROM AC OUTLET BEFORE CONVERT-
ING VOLTAGE.
REMOVE SCREW
REMOVE THIS COVER
Figure 1 Remove the Terminal Cover