KERN MCN-M Service Manual

2 MCN-M-SH-e-2220GB KERN MCN-MVersion 1.0 – 05/2022ServicemanualTable of contents1 Basic Information........................................................................................... 32 Introduction .................................................................................................... 33 Appliance overview ....................................................................................... 43.1 Feature overview ........................................................................................................................ 73.2 Keyboard overview ..................................................................................................................... 83.3 Installing the chair scales ........................................................................................................... 93.4 Levelling ................................................................................................................................... 103.5 Mains connection ...................................................................................................................... 123.6 Safety cable .............................................................................................................................. 123.7 Rechargeable battery operation with an optional battery power pack ..................................... 133.8 Battery operation ...................................................................................................................... 143.9 Insert batteries .......................................................................................................................... 153.10 Initial Commissioning ................................................................................................................ 164 Calibration and sealing information ........................................................... 174.1 General introduction: ................................................................................................................ 174.2 Verification notes: ..................................................................................................................... 174.3 Position adjustment switch and seals: ...................................................................................... 184.4 Verification validity period (current status in G) ........................................................................ 185 Service Menu ................................................................................................ 195.1 Software identification .............................................................................................................. 205.2 Adjustment ................................................................................................................................ 205.3 Adjustment procedure .............................................................................................................. 216 Maintenance ................................................................................................. 226.1 Service, maintenance ............................................................................................................... 226.2 Error Codes .............................................................................................................................. 226.3 Check the Load cell .................................................................................................................. 236.4 Checking the different Voltages ............................................................................................... 236.5 Trouble Shooting ...................................................................................................................... 247 Exchange of components ........................................................................... 257.1 Spare parts list .......................................................................................................................... 257.2 Opening the device ................................................................................................................... 257.3 Exchange of components ......................................................................................................... 267.4 Replacement of the main board ............................................................................................... 268 Technical drawings...................................................................................... 278.1 Exploded view chair construction ............................................................................................. 278.2 Exploded view indicator ............................................................................................................ 298.3 TKMG/TKMH Wiring Diagram .................................................................................................. 318.4 TKMG/TKMH Functional Block Diagram .................................................................................. 328.5 TKMG/TKMH Schematic Diagram ........................................................................................... 33