Sanyo PLC-WM4500L Service Manual

Also see for PLC-WM4500: Owner's manual User manual Owner's manual Owner's manual Manual

Contents

-83-TroubleshootingThis projector provides a function to get the error information of the projector by using the RS-232C serial port for thepower failure diagnosis.The further error information of the power failure and fan failure can be found out by using this function.Diagnosis procedure1 Connect a RS-232C serial cross cable to CONTROL PORT on the projector and serial port on the PC.2 Launch a communication software "Hyper terminal" provided with PC and setup the communication condition asfollows;Baud rate : 9600 / 19200 bpsParity check : noneStop bit : 1Flow control : noneData bit : 83 Turn on the projector. Check that the LED shows apower failure. (All the LEDs except LAMP LED areblinking)4 Type a diagnosis command of the power failure “CRALLPFAIL” and press a "ENTER" key within 1 secondon the command window of the software.The error information will be listed on the window asthe right.Check the status column. If “NG” is listed, the powerfailure occurs on its signal line (Power Line Name). Incase of the right table, this error information meansthat the power failure occurs on the 6V power supplycircuit on the main board . Check if the parts connectedto 6V power supply line are defective.Also the error information may be listed multiple as thebelow;In the above case, 2 kinds of causes are considered.One is the power failure occurs on the multiple placesat the same time, other is a power failure affects mul-tiple power supply lines even if the failure occurs on thesingle place.In the first case, Check if the parts connected to themultiple power supply lines are defective. In the latercase, determine a failure point referring to the powersupply flow chart on previous page. Basically, if thepower failure occurs on the upper side of power supply,the power failure is also detected on lower side of powersupply frequently. If the failure occurs on the lower sideof power supply, it is lightly affected to the upper side of the power supply. In the above case, because the failureoccurs on the 6V power supply on the main board (PF_MAIN), the failure is also detected on the 5V power supplyon the main board (MAIN, 5V).* See "Power Failure Detection System" for further description of the Error Information.CR ALLPFAIL000 PF_IC_S3.3V, OK000 PF_LNS, OK000 PF_MAIN, OK000 PF_12V_ID, OK000 AV, S-6V OK000 FAN, OK000 MAIN, 5V NG........ ............... ......... ......StatusError Information(Signal Name)ErrorCR ALLPFAIL000 PF_IC_S3.3V, OK000 PF_LNS, OK000 PF_MAIN, NG000 PF_12V_ID, OK000 AV, S-6V OK000 FAN, OK000 MAIN, 5V NG........ ............... ......... ......ErrorDiagnosis of Power Failure with RS-232C port