ContentsContents6.1 Troubleshooting .............................................................................................................................................................6-16.1.1 Outline.......................................................................................................................................................................................... 6-16.1.1.1 Outline of Troubleshooting .............................................................................................................................................................................6-16.2 Location of Connectors and Pin Arrangement...............................................................................................................6-16.2.1 Main controller PCB .................................................................................................................................................................... 6-16.2.2 Carriage relay PCB .................................................................................................................................................................... 6-116.2.3 Head relay PCB.......................................................................................................................................................................... 6-166.3 Version Up ...................................................................................................................................................................6-206.3.1 Firmware Update Tool ............................................................................................................................................................... 6-206.4 Service Tools................................................................................................................................................................6-216.4.1 Tool List..................................................................................................................................................................................... 6-21