Electronic Control
Integrated (
Integrated (
700-
700-
2) Series
2) Series
3-7
#3756780 - Revision D - July, 2005
FUNCTIONS OF 700 TALL UNIT ELECTRONIC CONTROL SYSTEM
The following few pages explain the monitoring, regulating and controlling functions of the electronic control system.
Signal trace schematic illustrations for the model 700TC/I-2 are used to demonstrate current flow for the function
being explained.
NOTE: Only normal operating electronic control functions are described along with problems which could cause
error annunciators. All possible malfunctions are addressed in the Troubleshooting Guide.
Supply Power to the Lighting System
115 Volts are supplied to the lighting system through the control board when the unit is switched on
by pressing the
UNIT ON/OFF key. (See Figure 3-9.)
NOTE: Disabling the lighting system (Sabbath Mode) is covered in Unique Electronic Control Input Operations.
Figure 3-9. 700TC/I-2 Signal Trace Schematic of Lighting System
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