Time and Temp Client Display Blank, Surge Card Not Outputting Correct Signal Voltage
Potential Symptoms
- Display is blank, but there is proper DC voltage to driver board.
- Display may show E4 but unable to communicate, LED test fails.
- Getting proper signal voltage up to surge card on wires disconnected but surge card is not outputting correct signal voltage to driver board.
- Or getting an incorrect input signal voltage measurement while wire is connected to the surge card.
- When surge card is bypassed display operates properly.
Environment
- Product Family: Digit and Price Displays
- Product: Time and Temp, DF-1010, DF-1011, DF-1012
- Component: Surge Card
- Control System: DM-100
Cause
- Failed surge card.
Resolution
- Replace surge card.
- NOTE: Do not leave surge card bypassed or else damage may be caused to display if a surge was to occur, resulting in customer responsibility of part replacement for driver board.
KB ID: DD3279056
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