SCP SCIENCE DigiPREP Service Manual page 9

5. CPU and general component verifi cation
□ Software runs accordingly
• Software version
□ Fan is fi xed accordingly
• Controller serial number
SYMPTOMS
The following symptoms must be verifi ed before
going into more detail.
1. The block is over shooting the set point
temperature, and the temperature keeps
climbing;
• Check the Heater Drive Circuit
• Ensure correct block has been selected.
The voltage selector switch of the heating
block is in the correct position.
2. The block is not heating;
• Ensure the DigiSET dongle is installed.
• The power cable is connected.
• Ensure the Voltage Selector Switch of the
heating block is at the appropriate voltage.
• Verify that the 180
is closed.
• Check resistance of heater according to
the DigiBLOCK size.
• Verify the 450
HT.
_________
_________
o
C NC Thermal Switch
o
C Thermostat is closed for
SCP SCIENCE
3. The block is heating very slowly;
• Ensure that the voltage selector switch of
the heating block is at the correct position.
• Ensure correct block has been selected.
4. No display and no back light;
• Check fuse F1.
• Check the 2 15A fuses inside the TS
housing.
Symptoms
Operation LED not illuminated
when power is on
Digital screen (LCD) is
malfunctioning
LCD shows "DigiPROBE
error"
KeyPad buttons are not
functioning correctly
The controller is not functioning
when power switch is on
The DigiPREP block is not
heating up
The heating block is not
reaching its temperature or vary
FIGURE 1: SYMPTONS VS. DOCUMENT REFERENCES
Reference
Page 26, 28,
36
Page 36
page 28
Page 34, 78
Page 31
KeyPad
9
Version 1.0