Figure 61: Pro Pac Ac Voltage And Power Supply Flow Chart - Ohmart Vega W-4510 Technical Reference Hardware Manual

Diagnostics and repair
Power switch to
ON
Power switch
indicator lit?
+5V power
supply
+ or - 15V
at power
supply ?
End

Figure 61: PRO PAC AC voltage and power supply flow chart

120
No
User AC
at I/O
TB5
Check Power
switch I/O J1 &
harness
No
AC voltage at
power supply
Remove
power supply +5V
wires. +5V?
Isolate +5V usage
and correct
No
Remove
I/O J2 + or
-15V ?
Isolate bad CPU
W-4510 Weigh Scale Technical Reference Manual
No
Correct AC
No
Check harness
No
Replace power
supply
No
Replace power
supply
Power supply terminals
TB1-1 AC/L1
TB1-2 AC/N
TB1-4 AC GND
TB2-1 -15V
TB2-2 15V COMM
TB-3 +15V
TB2-5V COM
TB2-6 +5V