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248349 Main Control Board Schematic
309909H 23
248349 Main Control Board Schematic
246899 Pump Solenoid Expansion Board Schematic
248349 Main Control Board LEDs
LED Description
D2 In normal operation D2 flashes on and off in 1
second intervals. If D2 is off (not flashing),
software is not booting; check for power to
the board or a short circuit.
D5 On: Dispense valve B is on (open).
Off: Dispense valve B is off (closed).
D6 Active only on units with recirculation option.
On: Recirculation solenoid is on.
Off: Recirculation solenoid is off.
D10 On: Dispense valve A is on (open).
Off: Dispense valve A is off (closed).
D12 On: Remote alarm output on.
Off: Remote alarm output off.
D13 D13 is always off. Output powers the 246899
Expansion Board, turning the board on and
off.
J5
D12 D6 D13 D5 D10
J6
F1
J4
J1
J8
J2
U4
D2
TI11316a
Pin 1 Pin 1 Pin 1
Pin 1
Pin 1 Pin 1
246899 Pump Solenoid Expansion Board LEDs
LED Description
D1 On: Pump B is on the downstroke.
D2 On: Pump B is on the upstroke.
D3 On: Pump A is on the downstroke.
D4 On: Pump A is on the upstroke.
P1
P2
P3
P4
1
D1 D2 D3 D4
J1
TI11229a
S
G
P
Pin 1
Pin 1