TurboChef NGC (Tornado) Service Manual page 38

THE MICROWAVE SYSTEM
32
ISSUE
High Voltage and/or
Filament Transformer(s)
Faulty
Wave Guide
Covers Broken
RESOLUTION
1. Determine if the High Voltage or Filament Transformer(s) is defective.
Use an Ohm meter to measure the Primary and Secondary Winding
Resistances. Refer to the High Voltage and Filament Transformer Table
on page 29 to determine if the Transformer is OK. If the resistance is
different then the Table indicates, replace the Transformer.
1. Replace Wave Guide Covers per Figure 17 on page 25.
   : Do Not remove the two (2) topmost and two (2) bottommost
screws as shown in Figure 17. These screws secure the Wave Guide to
the bottom of the oven cavity.