Marantz 2215 - Audio Trouble Analysis Procedures; Voltage Conversion Instructions

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6. Audio Trouble Analysis
1. Excessive line consumption a. Check for shorted rectifiers HOO7, H804, H805.
b. Check for shorted transistors HOO1, HOO2. Check L002
for short.
2. No line consumption or zero bias. a. Check line cord, fuse, shorted HOO5, HOO6, H713 &
H7 14.
b. Check for open rectifiers HOO7, H804, H805 or open
Lo02.
3. High hum and noise level. a. Check filter capacitors C006, C703, & C704.
4. Parastic oscillation a. Check for defective capacitors, C705, C706, C713,
C714, C723 & C724.
5. Improper clipping a. Check for proper adjustment of R729 & R730.
7. Voltage Conversion
This model is equipped with a universal power transformer to permit operation at 100, 120, 200,
220 and 240V AC 50 to 60Hz.
To convert the the Model 2215 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 CON-
VERTING VOLTAGE.
REMOVE SCREW
REMOVE THIS COVER
Figure 1. Remove the Terminal Cover