– 33 –
Control Board
The electronics architecture for top mount 20 ft model consists of 1 electronic board. The control
board reads analog signal from thermistors and convert it to temperature and controls the Compresor
and Defrost heater for Refrigerator operation. It also has 2 door signals to create adaptive defrost. It
communicates to the display board by serial port.
a) Feeding 127VAC control card in the main connector.
b) Measure voltage at the output of voltage regulator on the control card:
The value should be 5 + / - 0.2 VDC at the output of regulator U3 (TP TP Vcc and GND).
Temperature Verification and start cutting
a) Feeding 127VAC control card in the main connector
b) Turn the potentiometer knob in position 5 (counterclockwise to clockwise).
127v
Vcc
GND
In position 9,
the flat side of
the stem is at
the bottom
Summary of Contents for GTRS0 Series
Page 2: ......
Page 5: ...3...
Page 7: ...5 MODEL NOMENCLATURE Model series GTRS0 GTRC0 GTRL0 MTRL0 20 cubic foot refrigerators...
Page 11: ...9...
Page 14: ...12 REMOVE FRESH FOOD DOOR LOWER HINGE WITH 5 16 SOCKET SCREWDRIVER REMOVE TWO NUTS...
Page 34: ...20 EXPLODED VIEWS Knob Electro mechanical EX PL OD ED VIE WS...
Page 35: ...21 Knob Electronic...
Page 36: ...22 structure...
Page 37: ...23 FREEZER DOOR FRESHFOOD DOOR...
Page 38: ...24 HINGE...
Page 39: ...25 RACKS SPILLPROOF...
Page 51: ...37 Schematic Knob Electro mechanical...
Page 54: ...40 COMPONENT AND CONNECTOR LOCATOR VIEWS...
Page 55: ...41 Relay and Overload Under Cover Compressor Dryer No Clean Condenser Capacitor Condenser Fan...