Com-Tech 810 and 1610 Amplifier Service Manual
]
4-1
Rev. 0
4 AC Mains Voltage
Conversion
Figure 4.1 Control PCA Layout
4.1
Com-Tech
Voltage Conversion
Due to Crown's distribution of
Com-Tech
amplifiers all
over the world, not all of these amplifiers are built with
the same power supply components. Refer to the fol-
lowing text to see if your unit is compatible with the
voltage you need. See figure 4.1 for Control PCA lay-
out.
4.1.1 120 VAC, 60 Hz Units
These North American units have dedicated transform-
ers for 120 VAC, 60 Hz power mains. These units are
not convertable for use at any other voltage or fre-
quency.
4.1.2 100/120 VAC Export Units
These units have two-tap transformers that accept a
50 or 60 Hz AC line, and can be configured for 100 or
120 VAC. To convert from one voltage to another, switch
the BLK/RED and BLK/WHT wires. Refer to the follow-
ing chart.
Control Board Wiring
Line Wiring Connections
Voltage BLK/RED BLK/WHT
100V W9 W2
120V W2 W9
4.1.3 220/240 VAC Export Units
These units have two-tap transformers that accept a
50 or 60 Hz line, and can be configured for 220 or 240
VAC. To convert from one voltage to another, switch
the BLK/YEL and BLK/WHT wires. Refer to the follow-
ing chart.
Control Board Wiring
Line Wiring Connections
Voltage BLK/YEL BLK/WHT
220V W9 W2
240V W2 W9
J901
R958
R959
R960
R940
R939
R941
R942
TRANSFORMER
THERMAL
SWITCH
J902
Q931
R961
K930
C935
C938
C931
C932
C930
U930
U931
U932
L930
Z902
Z903
W1
W2
W7
W9
W8
W3
W4
W10
W6
W5
PWA
To Next Page
Loading...
