ADC Error Message on an Apollo 1 & 2 LCD

Knowledge Base > Printers > ADC Error Message on an Apollo 1 & 2 LCD

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When powering up an Apollo printer an ADC Error message appears on the Apollo printer’s LCD.

The cause of this error message is usually caused by a transistor Q4 (SGSD20) blowing in the PSU board.

To correct this problem replace the following: 1. C15,C16 from 6800µF to 2200µF. 2. R28 from 1.8kOhm to 82Ohm. 3. Transistor Q4. If you do not have the equipment to fix mainboards please contact the Tharo service department.

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