Chapter 9
Maintenance and Troubleshooting
Cleaning the Viewer
To keep the viewer operating at its best, you should clean it thoroughly several times a year. Before you perform any maintenance on the viewer, be sure to read the “Important Safety Instructions” (page 81), then follow these guidelines.
❏Be sure to turn off before cleaning.
❏Use a clean, dry cloth to keep the viewer free of dust.
❏Do not use harsh or abrasive cleaners.
❏If necessary, clean the battery contacts with a dry cloth.
Preparing the Battery
Installing the battery
1. Open the battery cover as shown below.
Maintenance and Troubleshooting 61