7.1 Basic troubleshootingFor advanced troubleshooting, refer the information on the following web site.http://panasonic.net/pcc/support/intercom/v900If the system does not operate correctly, particularly after installing or modifying the system, first check thefollowing points.R Power is connected to each unitR All cables are connected correctly and fully inserted into the terminals (see page 26 to 32)– You can also use the Connection check function (page 41) of the setup tool to check connections.R The in/out connections between units are correct (see page 26 to 30)R The switch settings are correct (see page 32 to 36)Red lit or flashing indicatorsIndicators lit or flashing in red indicate there is an error. See 5.10 POWER and ACCESS indicators (Page 57) formore information.General issuesProblem Cause & Solution PageCalls are disconnected. R The call with higher priority (such as an emergency call) was made,causing the current call to be disconnected.→ Wait and try again later.R The current call timed out and was disconnected.→ To conserve system resources, all calls time out and aredisconnected after a programmed amount of time.60The lobby station screenis blank.R The lobby station has not detected the visitor.→ Lobby stations feature a motion sensing device that turns on thescreen only when a visitor is detected. Stand in front of the lobbystation when operating it.12Cannot monitor lobbystations from the mainmonitor.R Lobby stations connected to extension boxes may not be able to bemonitored from main monitors. 53Cannot monitor lobbystations selected from themonitor list on the mainmonitor.R If the selected lobby station is connected to an extension box, it maynot be able to be monitored from main monitors. 53Setup issuesProblem Cause & Solution PageCannot upload data to thesystem.R The cables are not correctly connected.→ Check cable connections and make sure that all cables are fullyinserted into the terminals.– You can also use the Connection check function (page 41) ofthe setup tool to check connections.R Power is not connected to all units.→ Check the power connection and connect power to all units.R Switch settings are incorrect.→ Check the switch settings.R The in/out connections between units are incorrect.→ Check the connections.26 to 36627. . Other Information7. Other Information