Vaisala K-PATENTS PR-23 Series - Display Unreadable

68
PR-23 instrucon manual
DISPLAY
KEYBOARD
H1 interface card
Transmitter motherboard
Transmitter processor card
mA outputs
A
B
3VDC
24VDC
~
24 V/3 V
DC/DC
Y
POWER G
D16
G
D23
Relay 1
G
D17
Y
D26
G
G
G
R
R
D25
Relay 2
G
Y
Power supply
module
LD1
LD2
LD3
LD4
Figure 8.5 Diagnosc LED funcons
8.1.3 Display unreadable
            
              
            
     
               

     
          
     
                

             
              
     