Easykey Barrier Board Diagnostics - Graco ProMix 2KS Repair Manual

EasyKey Barrier Board Diagnostics

See F . 7 and Table 2 to troubleshoot the EasyKey barrier board. Also see the EasyKey Electrical Schematic on
IG
page 33 and the System Electrical Schematic on pages 34 and 35.
F4
F3
D4
F . 7: 255786 EasyKey Barrier Board
IG
Connector Description
J1 AC Power Input
J4 24 Vdc Power Input to
EasyKey Display Board
J5 12 Vdc Power Output to
Fluid Station Board
312780K
J4, Pin 1
Table 2: EasyKey Barrier Board Diagnostics
Diagnosis
n/a
D5 turns on.
D4 turns on if barrier board is functioning. If D4 does not turn on, fuses F3
or F4 (Graco Part No. 15D979) are blown or there is no input power at J4.
If there is no input power (D5 does not light), fuses F1 and F2 (Graco Part
No. 114788) may be blown.
J1, Pin 1
Troubleshooting
D5
F1
F2
J5, Pin 1
21