CRT Discharge
By now you shouldn't have to be reminded that CRTs carry a high voltage and can be dangerous. But you still have to work on them sometimes. So how do you do that without electrocuting yourself?
Newer Apple displays are equipped with a bleeder resistor (contained in the flyback transformer) that automatically drains the charge from the CRT when the power is shut off. However, if the resistor fails, the anode may retain a charge. For that reason, Apple requires all service technicians to discharge all CRTs before performing repairs.
The Apple discharge procedure is a precautionary measure to confirm that the CRT has been discharged prior to working on it.
After completing this section, you will be able to safely discharge the high ...
Get Apple Training Series: Desktop and Portable Systems, Second Edition now with the O’Reilly learning platform.
O’Reilly members experience books, live events, courses curated by job role, and more from O’Reilly and nearly 200 top publishers.
