9TroubleShootingSYMPTOM PROBABLE CAUSE SOLUTIONBad connection. Check cable connection.Computer not poweredONPower ON the computer.No front panellightsNotebook computer orGuardian deviceUse an external 6V 6V/1.4 amp.power adapter to powerCompuSwitch. Refer to Page 11.Channel lightflashescontinuouslyComputer not poweredON for that channelPower ON the computer.Activate Skip function.Loose videoconnection(s)Check and reconnect cables.No video displayfor one or allcomputers Monitor problems Turn off power to the computers.Connect the suspect monitor directlyto the computer, and check forproper display. If no display, theproblem is with the computer or themonitor. If display is correct, contactdealer for service.Keyboard error onone machineKeyboard connection Check K/B cable connection of thecomputer not operating properly.Unit does notactivate Hot KeyModeKeyboard Hot Key Mode works only with PS/2-or Extended AT-style keyboard.Unable to selectChannelScan function is active Toggle the Scan button so that thelight above the button is OFF.Keyboard does notfunction, or mouselocks upKeyboard or mouseconnection looseCheck keyboard or mouseconnection. Power down the problemcomputer first. Connect the keyboardor mouse directly to the computer todetermine if the problem is with thecomputer keyboard or mouse port.Then connect the problem computerto a different channel, and restart thecomputers. If problems persist,contact dealer.