GE Advantium PSA1200R Technical Service Manual

Contents

GE Advantium PSA1200R Technical Service Manual Manual pdf 34 page image

– 34 –DisassemblyTo remove the Selector Board:1. Disconnect power to the oven.2. Remove the Control Panel Assembly.(See Control Panel Removal.)3. Remove the Relay Board.(See Relay Board Removal.)4. Remove the Smart Board.(See Smart Board Removal.)5. Pull the selector knob off.6. Remove the 3 Phillips-head screws holding theSelector Board in place.Selector BoardVFD Board (Vacuum Florescent Display)CN1Note: Callout arrow identifies location of pin #1.• Location (See Control Boards and PanelConnections.)• Part of the Control Panel Assembly.• Displays information to the user.• Requires 5 VDC between VFD Board CN1 pins 11and 17 to operate.• Display data comes from the Smart Board.• Font information is contained in the VFDsoftware.• All text is displayed in green.• Disassembly. (See Disassembly.)Troubleshooting1. Is the display dead or displaying incorrect orincomplete information?• If display is displaying incorrect orincomplete information, check the harnessbetween the Smart Board and VFD. If OK,replace the Smart Board and VFD.• If display is dead, go to step 2.2. Pivot the Control Panel Assembly out from theoven. (See Control Panel Removal.)3. To gain better access to components, removethe wires that plug into the large relays on theRelay Board. (See Relay Board.) Cut the wire tiethat the Smart Board CN103 wire harness (SeeSmart Board.) is routed through.(Continued Next Page)