Service Procedures6H4866-02 55Replacing the Laser Board[1] Insert the three 3.0 mm retaining screws.[2] Reconnect the cables to the Laser Board.[3] Perform the test procedures in the section below, before replacing the Scanner Cover.[4] Assemble:• Scanner Cover• Service PanelTest ProcedureLaser WarningIf the Laser must be activated during the service procedure, wear protective safety glasses at all times.[1] Confirm that the Laser tube functions by the following test:(a) Check that the red line on the tube is in line with the red sign on the Rotation Motor Bracket(b) Log in to Technician mode.(c) Click the “Diagnostics” tab in “Setup.”(d) Perform a scan with the Cover open. Make sure that the Laser unit is functioning properly and that asteady beam is produced.[2] Perform the following test to confirm that the board is functioning properly.(a) Login in Technician mode.(b) Click the “Diagnostics” tab in Setup.Laser Operation(c) Activate:• Laser unit by clicking [On] (See Figure “Laser Operation” on Page 55.)• Rotational motor by clicking [On](d) Make sure that the value 40±0.5 appears in the speed window.