Samsung OFFICESERV 7100 Service Manual

Also see for OFFICESERV 7100: Quick guide System administration guide User guide User manual User guide

Contents

CHAPTER 13. Error! Use the Home tab to apply 제목 1,장 제목 1 to the text that you want to appear here.3-12 © SAMSUNG Electronics Co., Ltd.3.3 Control BoardDescribes the problems and troubleshooting the problems that occur on control boards suchas MP10/11 and LCP boards.3.3.1 MP10/11 BoardThe procedure for resolving the problem that occurs on MP10/11 board is as follows:3.3.1.1 Abnormal Processor OperationThe procedure for resolving the problem caused by abnormal MP10/11 board operation isas follows:YesIs CPU clock normal? NoYesIs RESET signal HIGH?NoYesIs DTACK signal ACTIVE(LOW)?NoYes- Y1 power(#4) is abnormal: Checkadjacent circuits.- Y1 power is normal but output isabnormal: Replace Y1.Track the DTACK source and checkthe operation such as source clock inHIGH status- DTACK of option board- DTACK of main board- DTACK of the time switch- U26(DS1706) if STEADY LOW.- If CPU ADDR/DATA bus if VIBRATION.Is at least one LED ofMP10/11 board(s) ON?No - Refer to ‘3.1.1 Checking CabinetPower’.- Check the connection status ofMP10/11 board.StartIs the initial booting performed?NoYes- Check the multimedia card file name- Scope if ADDR/DATA bus ofMP10/11 board is normal.- Replace the flash memory(U15)After systemis booted, does the boardoperate properly?NoYes- Scope if ADDR/DATA bus ofMP10/11 board is normal.- Replace the flash memory(U15)End