Blank Display - Vaisala K-PATENTS PR-23 Series Instruction Manual

8 Troubleshooting

8.1.1 Blank display

Is Power
indicator
light on?
Yes
Processor
card LEDs
blinking?
Yes
Reset contrast backlight,
check display cable,
check backlight cable
Yes
Image visible?
No
Power supply
problem
Front panel faulty
Processor card
PR-10500 faulty
No
Processor
No
card LEDs
blinking?
Yes
No
Processor card
PR-10500 bad.
Contrast and backlight are reset by pressing . during power-up.
Note. This will also temporarily reset the display language.
Next normal power reset will bring back to the original display
language if other than English.
Adjust contrast
and backlight
(DTR Main menu >
Display setup >
Contrast&Backlight)
Figure 8.3 Troubleshooting a blank display.
See figure on next page to
Power supply
troubleshoot power supply.
problem
Processor card
PR-10500 or
Front panel bad.
65