Carriage & PCA Main doesn’t detect pens.
Try the following:
1. Switch the Power OFF from the back of the Printer and disconnect the Power cord. Reconnect the power cord and power On the Printer.
2. Check that the Trailing Cable is not damaged.
3. Check that the Trailing Cable is correctly connected between the Main PCA and Carriage PCA.
4. Check that the Printhead has not failed and is not erroneous.
5. Check that the Flex circuit contacts and Printhead contacts are clean.