Section 6 – SR-2 Service Procedure D03A
Diagnostic Procedure
Step Action
Result
Comments
1. Turn the unit on.
2. Access the Gauge submenu in
the Maintenance Menu and
display the suction pressure or
discharge pressure.
The display should show the
pressure reading for the sensor.
If the sensor reading is obviously
incorrect or the display shows
[ ---- ], proceed as shown below.
Confirm reading with refrigeration
gauges as necessary. If all
sensors show dashes [----]
without being disconnected, the
microprocessor or wiring harness
is defective.
3. Turn the unit off and disconnect
the suction or discharge pressure
transducer at the transducer plug.
4. Turn the unit on.
5. Check the voltage at the sensor
harness connector.
The voltage between wires DPN
and DPP (Discharge Pressure) or
SPN and SPP (Suction Pressure)
must be from 4.90 to 5.10 volts
DC. Check the microprocessor
using Service Procedure A01A.
6. Check the microprocessor as
shown in Service Procedure
A01A.
If the microprocessor fails the test
it must be replaced.
7. Check harness continuity of the
DPI or SPI wires.
If the voltage at Step 5 is present
and the DP or SP wire has
continuity, replace the sensor in
question.
Page 2
P41RD03A 30 January 2005
Summary of Contents for SR-2 SmartReefer2
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Page 7: ...Tab goes here and the next page should be GREEN Section 1 Safety...
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Page 10: ...Section 1 SR 2 Safety Information 1 2 18 January 2005...
Page 14: ...Section 1 SR 2 Safety Information 1 6 18 January 2005...
Page 15: ...Tab goes here and the next page should be GREEN Section 2 Hardware Description...
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Page 48: ...Section 2 SR 2 Hardware Description 2 32 31 January 2005...
Page 49: ...Tab goes here and the next 2 pages should be GREEN Section 3 Software Description...
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Page 96: ...Section 3 SR 2 Software Description 3 46 31 January 2005...
Page 97: ...Tab goes here and the next page should be GREEN Section 4 Operation...
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Page 181: ...Tab goes here and the next 2 pages should be GREEN Section 5 Diagnostics...
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Page 266: ...Section 5 SR 2 Diagnostics 5 84 02 February 2005...
Page 267: ...Tab goes here and the next page should be GREEN Section 6 Service Procedures...
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Page 270: ...Section 6 SR 2 Service Procedure Index Page 2 01 February 2005...
Page 282: ...Section 6 SR 2 Service Procedure A01B Page 6 P41RA01B 31 January 2005...
Page 298: ...Section 6 SR 2 Service Procedure A02A Page 12 P41RA02A 02 February 2005...
Page 318: ...Section 6 SR 2 Service Procedure A03B Page 4 P41RA03B 30 January 2005...
Page 338: ...Section 6 SR 2 Service Procedure A15A Page 4 P41RA15A 30 January 2005...
Page 360: ...Section 6 SR 2 Service Procedure A46B Page 8 P41RA46B 30 January 2005...
Page 366: ...Section 6 SR 2 Service Procedure A48A Page 6 P41RA48A 30 January 2005...
Page 376: ...Section 6 SR 2 Service Procedure A50A Page 6 P41RA50A 31 January 2005...
Page 394: ...Section 6 SR 2 Service Procedure F08A Page 4 P41RF08A 30 January 2005...
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Page 402: ...Section 6 SR 2 Service Procedure G03A Page 4 P41RG03A 31 January 2005...
Page 406: ...Section 6 SR 2 Service Procedure H04A Page 4 P41RH04A 30 January 2005...
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Page 410: ...Section 7 SR 2 Information 7 2 02 February 2005...
Page 419: ...Tab goes here and the next page should be GREEN Section 8 Schematics and Wiring Diagrams...
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Page 422: ...Section 8 SR 2 Drawings 8 2 01 February 2005...
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