Fuses; Voltage Change - Classe Audio CAM-200 Service Manual

Fuses

EXTRA PRECAUTIONS SHOULD BE TAKEN WHEN REPAIRING, MODIFYING, OR
TROUBLESHOOTING IN THE POWER SUPPLY AREA. UNIT MUST BE DISCONNECT
FROM MAIN SOURCE AND CAPACITORS MUST BE DISCHARGED USING A 100W
INCANDESCENT BULB.
WHEN REPLACING FUSES, PLEASE MAKE SURE THAT THE FUSE HOLDERS ARE
HOLDING THE FUSES VERY TIGHTLY. A LOOSE FUSE HOLDER CAN TRANSLATE INTO
DISTORTION ON TOP OF THE SIGNAL.
Main fuses:
For 100 – 120v units: 5A slo-blo, Classe part number MDL-5A
For 220 – 240v units: 4A slo-blo, Classe part number MDL-4A
The main fuse is located at the back of the unit, on the rear panel.
Control board fuse: 0.50A, Classe part number 225.500
The control board fuse is located on top of the control board (B253X)

Voltage Change

EXTRA PRECAUTIONS SHOULD BE TAKEN WHEN REPAIRING, MODIFYING, OR
TROUBLESHOOTING IN THE POWER SUPPLY AREA. UNIT MUST BE DISCONNECT
FROM MAIN SOURCE AND CAPACITORS MUST BE DISCHARGED USING A 100W
INCANDESCENT BULB.
1. Set the primary wires of the main transformer as described below.
2. Replace the varistor, according to new line voltage, following Classe's recommendations. If varistor is
not available, remove old varistor and leave it empty.
3. Set the jumpers accordingly on the auxiliary transformer located at the back of the unit on the top
main board on the left-hand side of the auxiliary transformer (see tables below)
Mains X1
100VAC White
120VAC White
220VAC White
240VAC White
Note: In 240VAC mode, connect purple and black wires of transfomer together.
Mains
100/120VAC
220/240VAC
PRO-SVR_LEGACY
Primary wires, main transformer
X2 X3
Orange Blue
Orange Grey
- Grey
- Grey
Jumpers, auxiliary transformer
Position 1 Position 2
In Out
Out Out
X4 X7 X8
Black -
Yellow -
Yellow Blue Orange
Yellow Blue Orange
Position 3
Out
In
N2 N4
- Grey Yellow
- Blue Black
- Black
- Brown
Position 4 Position 5
Out
Out
Varist
or
130
130
250
250
In
Out
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