Due to the variety of Datasettes in the field, it is not possible to develop a flowchart to cover all of the component failures that are possible. From this point it is suggested that you:

1. Check for proper head alignment
2. Check for proper operation of the semi-conductor components on the PCB assembly
3. Check component parts directly related to the proper operation of the I.C.'s and transistors in the circuit.
4. Check I/O cable to computer and proper operation of the computer.