Sanyo DP42746 Service Manual

Also see for DP42746: Quick and easy setup Connection guide Owner's manual

Sanyo DP42746 Service Manual Manual pdf 6 page image

— 6 —POWER FAILURE CIRCUIT3241IC801 (CPU)D1606D16073911 10 3 4 9 5 6 114D1605 D1604 D1603 D160114Power FailPower OnThermal DetectorD1602K8MADIGITALBOARDIC1601A9VPOWER BOARDK8B K8AQ803Q801D5V12V AMPTV33VD3.3VA5VCPU (IC801) is programmed so the set will go to the stand-by mode when there is circuit failure as described below.(Refer to”Power Supply Lines.”)1. Power Failure : Detected voltage failure. (Connected toIC801 pin 32.)(Normal: High; Failure: Low)2. Temperature Failure : Detected temperature failure forPower Unit of PDP module. (Connected to IC801 pin 41.)(Normal: Low; Failure: High)LED FlashingWhen IC801 detects the Power Failure 3 times the LED willflash to indicate a power failure has occurred.Note: The LED does not flash for Temperature Failures.Note: If power failure is detected 3 times in 15 minutes, theset will enter the standby mode and cannot beswitched On. To reset the operating programs of theCPU it is necessary to disconnect the AC cord for ashort time.History of Power FailureWhen finishing the repair or stopping the Power Failure,the history of past failures can be checked.To see the history1. Enter the service mode. See “Service Adjustments”page 3.2. Select Item No. 08A PER Temperature Error.If Temperature Failure has accured the data in Item No.08A will be 01h (1).Attention:After servicing, reset the data of Item No. 08A to 00h (0)with the Volume + or – key.