Manuals / Bunn / Kitchen Appliance / Coffee Grinder

Bunn G9WD, LPG-2, G2 TRIFECTA, G9-2T DBC, FPG-2 Display Board Model MHG, SERVICE Cont

Models: FPG-2 G9-2T DBC G9-2 G2 TRIFECTA G9 G9WD LPG-2

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Display Board (Model MHG)

SERVICE (Cont.)

Display Board (Model MHG)

FIG 66 DISPLAY BOARD

Location:

The display board is located inside the hopper housing behind the membrane switch.

Test Procedure:

1.Press and hold the upper right hidden button to enter the Programming menus.

2.Scroll to SERVICE TOOLS menu, and press the button under "YES".

3.Press "YES" under TEST OUTPUTS and proceed, through the menus to test the left and right gates, and the grinder motor.

4.Then scroll to the TEST SWICHES menu and press the button under "YES". Test each button on the conttrol panel, the button pressed will be displayed on the screen.

Removal and Replacement

1.Disconnect the grinder from the power supply.

2.Remove the two 6-32 screws attaching the mem- brane switch bezel to the hopper housing.

3.Tilt the bezel assembly forward.

4.Remove the four 8-32 screws attaching the board cover bracket to the switch bezel and remove the bracket.

5.Disconnect the wiring harness from the display board.

6.Remove the four 8-32 screws attaching the display board to the switch bezel and remove the board.

To Control Board J8
		BLU GRN YEL ORN
		J10-1	J10-4
		DISPLAY BOARD
J9-1	J9-5	J9-10	J9-15
1			16
J9-1			16
FIG 67 DISPLAY BOARD TERMINALS

57	41545 122209

Image 57

Bunn G9WD, LPG-2, G2 TRIFECTA, G9-2T DBC, FPG-2 service manual Display Board Model MHG, SERVICE Cont

Contents

SERVICE & REPAIR MANUAL BUNN-O-MATICCORPORATIONGRINDERS Includes MHG, FPG FPG-2, LPG-2,G1, G2, G3BUNN-O-MATICCOMMERCIAL PRODUCT WARRANTY CONTENTS CAPACITY CHART RECOMMENDED DAILY CLEANINGINTRODUCTION ADJUSTMENTSSEE INSTRUCTIONS BELOW BEFORE USING MUST BE COMPLETED BY AUTHORIZED SERVICE PERSONNELG9 WD - Packaging & Shim Removal DO NOT PLUG INHopper Selector Switch Off/On/Start SwitchBatch Selector Switch Optional Dispense TimerModel G9 OPERATING CONTROLS ContinuedModels G1, G2, G3 & G2 trifecta Models LPG, LPG-2EPower ON/OFF Pad e 100V Models OPERATING CONTROLS Continued Model MHGModel G9-2TDBC OPERATING CONTROLS Continued Model FPG Batch Selector SwitchModel FPG-2DBC PAD cProblem TROUBLESHOOTINGProbable Cause RemedyProblem TROUBLESHOOTING contProbable Cause RemedyProbable Cause ProblemRemedy HoppersPROBABLE CAUSE PROBLEMREMEDY TROUBLESHOOTING contComponent Access SERVICEComponent Locations P602SERVICE Cont BAG SENSOR SWITCH Models G1, G2, G3 orCUP SENSOR SWITCH MODEL G2 TRIFECTA SERVICE Cont AC MOTOR AND GRIND CHAMBERSERVICE Cont AC MOTOR AND GRIND CHAMBER contSERVICE Cont AC MOTOR AND GRIND CHAMBER contFIG. 5 GRIND CHAMBER COMPONENTS Location SERVICE ContSERVICE Cont DC MOTOR AND GRIND CHAMBER - G1MD ONLY contSERVICE Cont 12.Slide burr auger rotor/spring assembly and burrDC MOTOR AND GRIND CHAMBER - G1MD ONLY cont SERVICE Cont MOTOR Models LPG & FPGSERVICE Cont MOTOR Models LPG & FPG11.Lay motor on it’s side SERVICE Cont 21.Discard old motor and housing assemblyMOTOR Models LPG & FPG SERVICE Cont DECHAFFER Models LPG & FPGFIG. 15 MOTOR MOTOR Models G9, G9-2,MHGSERVICE Cont FIG. 16 MOTOR WIRINGReplace if excessively worn or damaged FIG. 17 MOTOR AND GRIND CHAMBERNOTE Burrs must be replaced as a set SERVICE ContSERVICE Cont SNUBBER Models G9, G9-2,MHGGrinder Scale Model G9WD only CALIBRATION LEVEL 2 FUNCTIONSSERVICE Cont Capacitor Model LPG only SERVICE ContFIG. 20 CAPACITOR SERVICE Cont Circuit Breaker Models LPG, LPG-2E,FPG, FPG-2DBCSERVICE Cont Hopper Selector Switch Model LPG-2EonlySERVICE Cont Hopper Selector Switch Model G9-2onlyFIG 28 OFF/ON/START SWITCH SERVICE ContSERVICE Cont Urn/Carafe Switch Models G9, G9-2SERVICE Cont Batch Selector Switch Model FPGPotentiometer Model FPG SERVICE ContFIG 34 POTENTIOMETERS SERVICE Cont Rectifier Models G1 MD, FPG-2DBCSERVICE Cont Relay Early Model G-9SERVICE Cont Relay Models G1, G2, G3, G2 trifectaSERVICE Cont RELAY contLocation SERVICE ContReplace if excessively worn or damaged SERVICE ContHopper Slide Plates Models MHG SERVICE ContReplace if excessively worn or damaged wires, and proceed to #7 SERVICE ContSERVICE Cont Timer Model LPG-2ETimer Models LPG, FPG SERVICE ContTimer Model LPG-2E SERVICE Cont Timer Model G9Digital Timer Timer Model G9-2Analog Timer FIG 52 TIMERSERVICE Cont Control Board Model MHGSERVICE Cont FIG 55 CONTROL BOARDSERVICE Cont Membrane Switches Model MHG onlySERVICE Cont FIG 58 MEMBRANE SWITCHSERVICE Cont EMI Filter Models FPG & FPG-2SERVICE Cont Funnel Sensing Coil Models MHG & G9-2DBCSERVICE Cont Memory Clock Board Model MHGMEMORY BOARD GRN WHI RED BLKSERVICE Cont Display Board Model MHGTRIAC MAP for MHG TRIAC MAP for FPG-2DBC and G9-2DBC WIRING DIAGRAMS SCHEMATIC WIRING DIAGRAM2WIRE SINGLE PHASE 50/60 HZ G9-2DBC, G9-2TDBC W/SMART FUNNELWIRING DIAGRAMS SCHEMATIC WIRING DIAGRAM2WIRE SINGLE PHASE 50/60 HZ G9-2DBC, G9-2TDBC W/SMART FUNNELSCHEMATIC WIRING DIAGRAM G9-2TBDBC W/SMART FUNNEL 100 VOLTS AC 2WIRE SINGLE PHASE 50 HZWIRING DIAGRAMS 50/60 HZ 2WIRE SINGLE PHASESCHEMATIC WIRING DIAGRAM MHG WIRING DIAGRAMSWIRING DIAGRAMS SCHEMATIC WIRING DIAGRAM MHG with WD CBA2 WIRE + Gnd SINGLE PHASE, 50/60HZ 100 VOLTS AC, 120 VOLTS AC 240 VOLTS ACLPG-2E, LPGB-2E SCHEMATIC WIRING DIAGRAMWIRING DIAGRAMS 100 VOLTS AC 120 VOLTS AC 2 WIRE SINGLE PHASEWIRING DIAGRAMS 120 VOLTS AC 2 WIRE SINGLE PHASE 60 HZ WIRING DIAGRAMS SCHEMATIC WIRING DIAGRAM LPGWIRING DIAGRAMS LPG-ASCHEMATIC WIRING DIAGRAM 230 VOLTS AC 2 WIRE SINGLE PHASE 50/60 HZWIRING DIAGRAMS SCHEMATIC WIRING DIAGRAM LPG W/Capacitor120 VOLTS AC 2 WIRE SINGLE PHASE 60 HZ 100 VOLTS AC 2 WIRE SINGLE PHASE 50-60HZ WIRING DIAGRAMS SCHEMATIC WIRING DIAGRAM LPG-BSCHEMATIC WIRING DIAGRAM G1, G2, G3 & G2 trifecta WIRING DIAGRAMS2 WIRE + GRD SINGLE PHASE 50/60 HZ 100 VOLT AC 120 VOLT AC 230 VOLT AC 240 VOLT ACSCHEMATIC WIRING DIAGRAM G9-URN/CARAFE SCHEMATIC WIRING DIAGRAM G9120 VOLTS AC 2 WIRE SINGLE PHASE 60 HZ 2 WIRE50 HZ SCHEMATIC WIRING DIAGRAM G9A HDWIRING DIAGRAMS SCHEMATIC WIRING DIAGRAM G9WD-RHSCHEMATIC WIRING DIAGRAM G9 SCHEMATIC WIRING DIAGRAM G9WIRING DIAGRAMS 120 VOLTS AC 2WIRE SINGLE PHASE 60 HZ230 VOLTS AC 2 WIRE SINGLE PHASE 50 HZ SCHEMATICWIRINGDIAGRAMG9-2AHDWIRING DIAGRAMS WIRING DIAGRAMS WIRING DIAGRAMS FPGA120 VOLTS AC 2WIRE SINGLE PHASE 60 HZ 230 VOLTS AC 2WIRE SINGLE PHASE 50/60 HZWIRING DIAGRAMS 100 VOLTS AC 120 VOLTS AC 2WIRE SINGLE PHASEFPG-2DBC, FPGB-2DBC 60 HZ230 VOLTS AC FPG-2ADBC50 HZ SCHEMATIC WIRING DIAGRAM