Digital Control System; Triac Voltage Control - GE JP938 Technical Service Manual

Digital Control System

The control system consists of four circuit boards:
the touch board (which is permanently adhered to
the ceramic glass panel) that senses the user
input, the display board that contains the panel
displays, the logic board that contains the micro-
processor, and the power board that does the
power switching and control of the heating units.
Display
Board
Logic
Board
Power Board
• If the touch board is damaged, the entire glass
assembly must be replaced.
• If the display board is damaged, it can be
replaced by removing the glass top and discon-
necting the display board from the touch board.
• If the logic board is damaged, it can be replaced
by removing the glass top and removing the logic
board from the area under the keypad.
• If the power board is damaged, it can be ac-
Ceramic
cessed by removing the drop box cover that is
Glass With
under the cooktop.
Touch Board
Permanently
Note: No individual components on the boards
Adhered
are replaceable.
Burner

Triac Voltage Control

Box
A triac-fired control replaces the usual rheostat
Drop Box
temperature control for each surface element. The
control receives feedback from the temperature
Cover sensor to allow for precise control of the heating
element power.
GEA00807
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