Overview
A small percentage of LaserWriter 12/640 PS and 12/640 PS Plus printers fail to disable power inside the printer when the top cover is opened. This could cause the user to come in contact with very low levels of electrical voltage and/or be exposed to rotating parts.
Though the potential risk of injury is small, Apple recommends that all LaserWriter 12/640 owners follow the steps outlined below to ensure that their printer has been or will be modified to correct this issue.
If you own a LaserWriter 12/640 PS or 12/640 PS Plus, follow these steps:
1. Check to see if your printer has already been modified. There are two markings to look for:
- If you have the original shipping box, check to see if there is a blue dot on or near the UPC code label, or
- Remove the paper tray from your printer and look for a white dot on the left side black plastic inside.
2. If you cannot locate either of these markings, please contact an Apple Authorized Service Provider to schedule an appointment to have the modification performed at no cost to you. For assistance in locating a reseller near you, United States customers can call 1-800-538-9696. Canadian customers can call 1-800-665-2775. International customers can contact your local Apple Assistance Center or Apple authorized service center for more information.
If you need to open the top cover of your printer prior to your reseller visit for modification, Apple recommends that you turn off your printer before opening the top cover.
In addition to the above procedure, modifications to reduce the possibility of paper jams will also be performed.
Note: If your printer was manufactured after May 1, 1997 your printer has already been modified. The unit will have the markings described above and the power will disable when the top cover is opened. A program is in place for Apple authorized resellers to have their existing inventories of LaserWriter 12/640 PS and 12/640 PS Plus printers modified. Check with your reseller or look for the markings outlined above to confirm a new printer has been modified.