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Electrical Maintenance
8-8
SMART FETS
A Smart FET (Field Effect Transistor) is a circuit control device that acts like a relay and a circuit breaker. Smart FETs halt
current flow if an overcurrent condition exists, and resume normal operation when current flow is within limits. Smart FETs are
not field repairable. Refer to the appropriate Microprocessor Diagnostic Manual for more information about the Smart FETs.
SMART REEFER 2/3 (SR-2/3) MICROPROCESSOR CONTROLLER
Refer to the Truck SR-2 Single Temp Diagnostic Manual TK 54292/TK 55208 for complete service information about the
Microprocessor Controller and the related components.
LED 20
(Not Used)
LED 21
Status – Flashes once per second when the base controller is powered and operating normally.
Flashes several times per second when flash loading. Is on without flashing during reboot and when
under test. Flashes twice within 1 second followed by 1 second off if a CAN communication error
is present.
LED 22
K8 Drain Tube Heaters Remote Evaporator (Not Used)
LED 23
K9 On/Off Circuit
LED 24
K6 Fuel Solenoid Pull-In Circuit
LED 25
K7 Starter Circuit
LED 26
(Not Used)
LED 27
ETV*
LED 28
ETV*
LED 29
ETV*
LED 30
ETV*
* May be illuminated even if the ETV outputs are not used.
Interface Board Outputs With Smart FETs
Output
Function
Run Relay Coil
High Speed Relay Coil
EVA, EVB, EVC, EVD
ETV Outputs
CIS
Condenser Inlet Solenoid
HG
Hot Gas Solenoid
PV
Purge Valve
LIQ
Liquid Injection Solenoid
EXC
Alternator Excite
ALPC
Alarm Light (Optional)
ALM
Alarm Light (Optional)
Interface Board LED Functions (Continued)
LED #
Function
Summary of Contents for T-1000R
Page 14: ...Safety Precautions 2 6 Warning Decals 2e24151g0 ...
Page 34: ...Maintenance Inspection Schedule 4 10 ...
Page 57: ...Unit Description 5 23 Purge Mode UT Series 1 3 4 5 2 ...
Page 67: ...Unit Description 5 33 Zone 1 Cool and Zone 2 Cool UT SPECTRUM Units ...
Page 69: ...Unit Description 5 35 Purge Mode UT SPECTRUM Units ...
Page 71: ...Unit Description 5 37 Zone 1 Cool and Zone 2 Heat UT SPECTRUM Units ...
Page 72: ...Unit Description 5 38 ...
Page 74: ...Diesel Electric Menu 6 28 Adjust Brightness 6 29 Time 6 30 ...
Page 120: ...Operating Instructions Standard HMI 7 18 ...
Page 152: ...Engine Maintenance 9 14 T Series Fuel and Oil System Components TK 376 ...
Page 154: ...Engine Maintenance 9 16 T Series Fuel and Oil System Components TK 270 ...
Page 156: ...Engine Maintenance 9 18 UT Series Fuel System Components AMA768 ...
Page 172: ...Engine Maintenance 9 34 T Series Engine Mounting Components for 2 Cylinder Engine ...
Page 184: ...Engine Maintenance 9 46 ...
Page 238: ...Refrigeration Maintenance 10 54 ...
Page 246: ...Clutch Maintenance 11 8 ...
Page 258: ...Structural Maintenance 12 12 ...
Page 264: ...Mechanical Diagnosis 13 6 ...
Page 265: ...14 Electric Standby Diagnosis ...
Page 268: ...Electric Standby Diagnosis 14 4 ...
Page 269: ...15 Refrigeration System Diagnosis ...
Page 272: ...Refrigeration System Diagnosis 15 4 ...
Page 280: ...Remote Evaporators 16 8 ...