Roland SJ-540 Long Data Cable. they’re 3650mm/143″ long, 3.7cm wide and has 36 pins. This Roland SJ-540 Long Data Cable is suitable for the following Roland printers. It can be used a replacement of the following Roland part numbers: 1000003784 / 1000004708 / 1000004962 / 1000007177 / 23475198 / 23475200 / 23475213 / 23475240 / 23475218. This cable goes from the main board to the carriage board. if Roland head cables get dirty, bent or stripped, you will get printheads which will misfire or finish off altogether – so you’ll need one expensive repair. You hear this all the time – cables that short out the printhead or worse, cause injury to the expensive Head Board or Carriage Board. Official Mimaki documents say that the lifetime of cables is between 5-10 insert/removal cycles. we all know that you simply will get a lot of life if you’re careful in handling these however the actual fact is that the fragile foil leads get broken over time from every removal cycle. If you notice ANY injury (bent instrumentality, dirty leads, even the slightest nick to the cable), amendment out the cable at once. It’s less expensive to switch cables than to wear down a broken head board or printhead!