Chapter 22-55if the IP address is valid.- if the main controller PCB is faulty, replace the PCB.If 'OK' is indicated, suspect a fault in the user's network environment. Report to the system administrator for appropriate remedial action.2.4.8 Making a Check Using a Local Host Address0008-3813/ iR85+A local host address is the IP address of the machine. When you execute PING using the address, it will return after it has reached the network controllerso that you will be able to find out whether the network controller (main controller PCB) is free of a fault or not.1) Enter the IP address of the machine for PING.If 'NG' is indicated, perform the following, and execute PING once again:- if the IP address of the machine is faulty, check to be sure that the IP address setting is correct or, as necessary, report to the system administrator to seeif the IP address is valid.- if the main controller PCB is faulty, replace the PCB.If 'OK' is indicated, suspect a fault in the user's network environment. Report to the system administrator for appropriate remedial action.2.4.9 Making a Check Using a Local Host Address0008-3849/ iR8070A local host address is the IP address of the machine. When you execute PING using the address, it will return after it has reached the network controllerso that you will be able to find out whether the network controller (main controller PCB) is free of a fault or not.1) Enter the IP address of the machine for PING.If 'NG' is indicated, perform the following, and execute PING once again:- if the IP address of the machine is faulty, check to be sure that the IP address setting is correct or, as necessary, report to the system administrator to seeif the IP address is valid.- if the main controller PCB is faulty, replace the PCB.If 'OK' is indicated, suspect a fault in the user's network environment. Report to the system administrator for appropriate remedial action.