Ohmart Vega W-4510, Technical Reference Hardware Manual

Page: 132 / 162

Diagnostics and repair
W-4510 Weigh Scale Technical Reference Manual 115
Figure 56: Smart Pro analog input-2 flow chart
Analog Input-2
Start
Is signal
present at
Input 2 TB4
(5-6)?
Problem with
external wiring or
transmitter
Is frequency
okay at U7-3
for input 2 ?
Check jumpers
and I/O signal
cable
Does
+15VDC
measure across
(4-9) at U6 for
input
2?
Refer to power
supply flow chart
Does
-15VDC
measure across
(11-9) at U6
for input
2?
Refer to power
supply flow chart
Replace CPU
board
End
Yes
No
No
No
No
Yes
Yes
Yes