Repair Of The Main Board - Epson LQ-570 Service Manual

REV.-A

5.3 REPAIR OF THE MAIN BOARD

This section provides instructions for repairing the main board when it is defective and describes variius symptoms,
likely causes, and checkpoints. Checkpoints refer to proper waveforms, resistance values, and other values to be
checked to evaluate the operation of any component that might be bad. Check these values and take the
appropriate action.
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Table 5-4. Re~air of the Main Circuit Board
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