Heath Consultants Heath Volume Corrector (HVC) - Manual (Page 26)

26
HVC Troubleshooting
The following may serve as a quick troubleshooting guide if you encounter problems in operating the
HVC:
Symptom Diagnosis
Will not log on 
Verify that proper com port is selected on computer. (If a Serial to
USB adapter is used, find out the proper com port selection in the
“Device Manager”)

If error “Com not ready to send” check to see that only 1 session of
HVC Host is running. After correcting problem, it may be necessary
to reboot the computer.

Make sure that “Default Sandia=ID” in “Host Setup” is set to 63.

Check Com cable

Check if pushbutton will scroll unit

Check battery voltage on LCD

Call factory for assistance.

Call factory for assistance Will not scroll

Check battery voltage

Test scroll switch with ohmmeter

Restart instrument. Remove main power connector and then remove
the lithium jumper on the PCB. Wait 5 minutes, reconnect the main
power first (with good battery), then re-connect the lithium jumper
(No data will be lost after restart).

Call factory for assistance.
Display is blank

Check main & lithium battery voltage

Replace all batteries

Check lithium jumper (Scrape pins with a knife to clean if necessary)

Restart instrument. Remove and replace batteries and reconnect.

Call factory for assistance.
Not responding to
applied pressure 
Confirm pressure mode set to AUTOCheck connections of transducer
wires

Check connections of transducer wires
 Check “Full Scale” value in poly file. Calibrate column/ “Edit
Calibration Terms”, enter the correct “Full Scale”

Set the pressure calibration to default. -> Calibrate Column -> Edit
Calibration Terms -> click the check box next to Pressure Calibration
“Default”. Note: Recalibrate Pressure after these steps.

Replace transducer and recalibrate

Call factory for assistance