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Kemppi OY
2. SECONDARY RECTIFIER CARD Z003
• Use a digital multimeter to test the secondary unit diodes. Diodes are in groups, so you can measure them in four
separate groups
• Disconnect main transformer secondary side wires from Z003 card
• Remember to test diodes both ways: forward bias and reverse bias
Measurings:
Positive test lead Negative test lead Result
X1 Z003, heatsink 0,3-0,7VDC
X2 Z003, heatsink 0,3-0,7VDC
X3 Z003, heatsink 0,3-0,7VDC
X4 Z003, heatsink 0,3-0,7VDC
Z003, heatsink X1 no value
Z003, heatsink X2 no value
Z003, heatsink X3 no value
Z003, heatsink X4 no value