C-1
MODEL 2700 APPENDIX C
TROUBLESHOOTING GUIDE
SOLU CUBE SYSTEM
MODEL 2700 ANALYZER AND MODEL 2701 SENSOR
TROUBLESHOOTING GUIDE
In a Solu Cube system, communication between the
analyzer and the sensors is digital. This is different from
all other Uniloc analyzer-sensor systems, but in many
cases digital communication makes troubleshooting
easier! If the connection works at all, chances are it
works perfectly. The trouble usually is getting a good
analyzer-sensor connection.
1.1 DEFINITIONS
• EEPROM
Electrically Erasable Programmable Read-Only
Memory. This memory retains data even when
power is off.
1.2 TIPS AND GUIDELINES
• Ask for the Analyzer Software Version
Anytime you are troubleshooting the Cube, ask for
the software version so that you know what you are
working with.
• Reset the Analyzer to Factory Settings
Resetting the Analyzer to Factory Settings is a good
way to start with a reliable configuration and clear
any erroneous EEPROM data, if there is any. It
should be done, however, only after all measures
are taken to determine what is wrong with the sys-
tem “as is”. To reset the Analyzer, press the F1 and
F3 keys simultaneously during VIEW VERSION. The
display should begin the test pattern sequence to
acknowledge the keypress.
The customer will lose any analyzer settings that
are different from the Factory Settings.
The F1/F3 keypress loads data from program mem-
ory into the EEPROM. This assures that the analyz-
er and sensor configuration data is good.
• Serial Number
The Serial Number has the manufacturing date and
the Sensor ID number. D96-00752, for example,
shows that the sensor was made in April (D) of
1996. The Sensor ID number is 752. Refer to QIP-
87, “Product Identification and Labeling”, revision F,
section 3.7 for more detail.
During Start-Up and in VIEW SENSORS, the
Analyzer displays the Sensor ID number only.
1.3 START-UP TEST
There are six steps in Start-Up:
1. Display test-pattern sequence
(Takes about 40 seconds)
2. READING SENSORS
PLEASE WAIT
3. AVAILABLE PRESS <—
S/N TO ASSIGN
ADDR:
4. REVIEW ADDR LIST
ADDR S/N TYPE
5. INITIALIZING SENSORS
PLEASE WAIT
6. Process measurement reading
1.4 START-UP PROBLEMS
1. NO SENSORS ARE DETECTED
2. Sensors connected to the Analyzer are not listed
as AVAILABLE
3. After start-up, measurement is incorrect
1.4.1 NO SENSORS ARE DETECTED
The following message appears during Start-Up:
NO SENSORS ARE
DETECTED
CHECK WIRING THEN
PRESS ANY KEY
Check Sensor signals.
Equipment Required: Digital Multimeter (DMM)
Connection check
Check the sensor wiring at the analyzer terminal block.
A gentle tug on each wire should verify that the sensor
wires are securely connected.
Voltage check
Attach the Common (ground) probe of the DMM to a
BLK sensor wire at the back of the Cube. Make sure
that the probe touches the wire, not the terminal block
screw or the pin from the Analyzer electronics.
Touching the sensor wire helps to verify the integrity of
the terminal block-to-wire connection.
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