Bayer HealthCare RapidPoint 400 Series, Service Manual, Page: 199 / 458

Rev. C Troubleshooting 199
D38 Qualifier Descriptions
D38 indicates failure of the temperature control system. The failure is most
likely due to hardware, although it may be caused by ambient conditions
that prevent the software from controlling the heaters.
There are two categories of D38 errors: fatal and non-fatal. Non-fatal errors
include qualifiers 4 and 5; fatal errors include 1, 2, 3, 6 and 12.
NOTE:
Non-fatal D38 errors and a Temp Not Ready occurrence force
cartridge initialization after returning from Diagnostics or upon closing the
door.
For non-fatal errors, the system attempts to reenable the temperature
control every 15 minutes for up to an hour. If the system does not recover,
a D38:12 is displayed.
If during a non-fatal temperature error no measurement cartridge is
installed, then the measurement cartridge replacement procedure will
preempt the temperature handling.
All D38 types except D38:1 are detected by the temperature control
system software which runs once per second. D38:1 is detected on
startup, during a calibration, and when another thermal error is detected.
3 Block Heater Sensor
Failure: Thermistor is
shorted or open.
Temperature is <10°C
or > 50°C.
4 Block Heater failure.
5 Block temperature or
setpoint out of range.
6 Pre-heater sensor
failure.Thermistor is
shorted or open,
temperature is
< 10°C or > 50°C.
12 Unrecoverable
temperature error. If prompted to call for service, record the message,
including the qualifier, and call for technical assistance.
Service Solutions
Perform service solutions only after all other corrective
actions have been completed.
1. Perform the Temperature test.
2. Check cables and connections to the cartridge interface
assembly and the Main board.
3. Replace the connector block.
4. Replace the cartridge interface assembly.
5. Replace the Main board.
Message Probable Cause and Corrective Action