Ohmart Vega W-4510, Technical Reference Hardware Manual

Page: 136 / 162

Diagnostics and repair
W-4510 Weigh Scale Technical Reference Manual 119
Figure 60: PRO PAC Analog Output (mA/mV) flow chart
Analog Output (mA/mV)
#1
Have
power levels
been
checked?
Start
Refer to power
supply flow chart
If mA selected
JP1 not installed
Set output equal
to 50%
If mV selected
JP1 installed
Does
TB1(10-11)
measure 12mA
or 50mV?
Check I/O signal
cable or replace
CPU
External wiring or
controller
problem
#2 Start
Have
power levels
been
checked?
Refer to power
supply flow chart
If mA selected
JP2 not installed
Set output equal
to 50%
If mV selected
JP2 installed
Does
TB3(8-7) measure
12mA
or 50mV?
Check I/O signal
cable or replace
CPU
External wiring or
controller
problem
Yes
No
Ye
s
No
Ye
s
Ye
s
Y
es
No
Ye
s
Ye
s
No
Ye
s
mA mV
mA mV