Hi-Target HTS-420R - Q-Survey Application; Distance Measurement Notes

HTS-420R Maintenance Manual
19
Fault Analysis
Outline of Fault descriptions
Fault detail
Fault location
Fail to turn on
No response when power
button is pressed down
1. Power supply failure
2. Program damage
3. power key disconnected
4. Screen disconnected
5. Mainboard failure
Automatic shutdown after
startup
After startup, it
automatically power off
1. Low battery
2. Parameters missing
3. Shortcircuit in EDM board
4. Mainboard failure
Program crash
When starting up, it hangs
at the boot screen
1. Parameters missing
Tilt over
It shows “tilt over ” even
the instrument is level
1. Broken compensator
2. Compensator mechanical zero
position out of qualified range
3. Incorrect compensator
4. linearity calibration
Blank screen, black screen or
buttons don’t work
Normally occurs only on
one of both screen unit and
the other one is working
normally
1. Broken LCD
2. The other LCD disconnected
Fail to communicate with PC
Cannot read any data from
PC with USB cable
connected to the
instrument
1. Broken RS232-USB cable
2. The cable between sockets 3. and
mainboard in bad contact
4. Broken mainboard
Angle value hopping
The angle value keep
changing by over 1°
If there is CCD waveform detected by
software:
1. Stained code circle
2. Stained CCD
If no CCD waveform detected by
software: