Panasonic PT-EX600U Service Manual

Also see for PT-EW630E: Operating instructions

Contents

Panasonic PT-EX600U Service Manual Manual pdf 103 page image

-103-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 are blinking)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 means thatthe power failure occurs on the 3.3V power supply onthe GAMMA (Digital Gamma) circuit on the main board(GAMMA, 3.3V). Check if the parts connected to 3.3Vpower supply line on the Gamma circuit 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 side of power supply, it is lightly affected to the upper side of thepower supply. In the above case, because the failure occurs on the S3.3V power supply on the main board (MAIN,S3.3V), the failure is also detected on the 1.2V power supply on the main board (SWFPGA, 1.2V).* See "Power Failure Detection System" for further description of the Error Information.CR ALLPFAIL000 KS&DL, OK000 GAMMA, 3.3V NG000 GAMMA, 2.5V OK000 GAMMA, 1.8V OK000 GAMMA, 1.0V OK........ ............... ......... ......ErrorError Information(Signal Name)CR ALLPFAIL........ ............... ......... ......000 MAIN, S3.3V NG000 MAIN, S5V OK000 MAIN, S5VL OK...... ............... ......... ......000 SWFPGA, 1.2V NGErrorDiagnosis of power failure with RS-232C portStatus