Looking for Service manual for the Gestetner 5499...It has a service code of SC07-30...which say it's the (Friction pad motor lock)..I have the service codes, but need to know where the friction pad is. It also says if the sensor's status remains the same after the motor turns for 5 seconds that it could be a defective sensor or a defective motor. Does anyone know which sensor or motor it's talking about??? Or does anyone have the service manual to locate the postion of these two items?