Sub-Zero INTEGRATED Series Service Manual page 17

General Information
FUNCTIONS OF THE ELECTRONIC CONTROL SYSTEM
The following pages explain monitoring, regulating and controlling functions of the electronic control system. In most
cases signal traces of a model 736TCI wiring schematic are used to show current flow for functions being explained.
Supply Power to the Lighting System
AC line voltage is supplied to the lighting system through the control board when the unit is switched ON by pressing
the UNIT ON/OFF key, so when the door or drawers are open, the light switches allows power to the lights
Figure 3-18).
NOTES:
• the AC voltage signal to the lights is monitored by the microprocessor to control the door ajar alarm feature, and
with the use of a relay for the drawer compartments, the evaporator fan is also controlled.
• If in Sabbath Mode, the lighting system is disabled. Sabbath Mode will be covered later.
HIGH VOLTAGE
BLACK
J5
J7
E2 E7 E10 E6
J4
J3
J1
J2
AC Line voltage is supplied
through J7 to lighting sys-
tem unless unit is switched
OFF or is in Sabbath Mode
ORANGE/BLACK
ORANGE
REFRIGERATOR
LIGHT SWITCH
ORANGE/BLACK
ORANGE/BLACK
FREEZER
LIGHT
SWITCHES
#7015817 - Revision A - January, 2010
INTEGRA
INTEGRA
L1
115 VOLTS
NEUT
60 CYCLES
WHITE
GRAY
J6
ORANGE/BLACK
NOTE:
Door Ajar Sense Lines
ORANGE TERMINATOR
ORANGE/BLACK
Figure 3-18. 736TCI Signal Trace Schematic of Lighting System
TED
TED
(736 T (736 T all SWS #2970000) all SWS #2970000)
WHITE
3
1
5
4
6
2
7 8
LIGHT
3-10
SERIES
SERIES
WHITE
REFRIGERATOR
LIGHTS
FREEZER
LIGHTS
(See