Voltage Change - Classe Audio CA-201 Service Manual

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 Z1
100VAC White
120VAC White
220VAC White
240VAC White
Mains
100/120VAC
220/240VAC
PRO-SVR_LEGACY
Primary wires, main transformer
Z2 Z3
Orange Gray
Orange Blue
- Yellow
- Black
Jumpers, auxiliary transformer
Position 1 Position 2
In Out
Out Out
Z4 Z5 Z6
Yellow -
Black -
- Blue Orange
- Blue Orange
Position 3
Out
In
Z7 Z8
- Blue Black
- Gray Yellow
Gray Black
Gray Yellow
Position 4 Position 5
Out
Out
Varistor
140
140
250
250
In
Out
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