When CAM working condition, the lens E: 61:00 alarm, according to the information displayed in focus motor failed to initialize, test machine after removing the focus motor, focus motor is working properly, you can confirm a poor position to check the motor circuit, power measuring position optoelectronic devices there are problems, measure CPU (IC402) 53-pin output is normal, but the switch Q302 output is bad, after replacing Q302 OK.6Qcservice manual download site