Functions Of Electronic Control System; Supply Power To Lighting System - Sub-Zero 601R-2 Technical & Service Manual

Electronic Control System
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 on a model 632-2 wiring schematic are used to show current flow for functions being explained.
Supply Power to the Lighting System
115 Volts AC are supplied to the lighting system through the control board when the unit is switched ON by pressing
the UNIT ON/OFF key. With the doors open, the light switches allows power to the lights (See Figure 3-10).
NOTE: 115 Volt AC signal to the lights is monitored by the microprocessor to control the door ajar alarm feature.
NOTE: If in Sabbath Mode, th lighting system is disabled. Sabbath Mode will be covered later.
J5
J7
E2 E7 E10 E6
J3 J4
J2 J1
REFRIGERATOR
#3758407 - Revision B - August, 2006
L1
115 VOLTS
BLACK 60 CYCLES
CONTROL
BOARD
J6
ORANGE
LIGHT SWITCH ORANGE
BROWN
FREEZER
LIGHT SWITCH BROWN
Figure 3-10. Signal Trace Schematic of Lighting System
Built-In
Built-In
(600-
(600-
NEUT
WHITE
M
LIGHT
TERMINATOR ORANGE
LIGHT
TERMINATOR ORANGE
3-8
Series
Series
2
2
)
)
M
M
M
M
REFRIGERATOR
LIGHTS
FREEZER
LIGHTS
FREEZER
LIGHT