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So i tested the Transistors, and 3 of them gives me 12.6 and 1 gives me 11.1 on the OHM 20K setting i dont have a propper testor with diode setting. I will only get to work on it end of Mei and will revert here once ive replaced Transistors. With sum luck else its new head ig.

I swopped the cyan cable with the black cable on the head side, cyan still fires but not the black

Can i swop those 2x cables i tried the head cable swop but problem stays on black

Thanks just swopped cables Cyan still prints on swop but, still no black, ink is clear all the way through on cleaning, just zero on printing

Hey guys, Roland sp540i, so after zero ink on prints i replaced transistors and got successful test print until i noticed air in ink line and leak from manifold, replaced these fitted dampers, pulled ink through capping tops successful. After this there suddenly is ZERO BLACK when doing a test...

Was transistors indeed, did replace them and printed fine for a minute, then noticed damper leaking on manifold, replaced these run test print and all good but ZERO BLACK, set new cables still no black, any ideas

Was transistors indeed, did replace them and printed fine for a minute, then noticed damper leaking on manifold, replaced these run test print and all good but ZERO BLACK, set new cables still no black, any ideas

Hi any contacts for parts on Roland SP540i more specifically Transmitter/Diode 1746_47/O & C4131_47/B and a surface mount fuse 3.15A

ok so the F2 fuse tested blown, but i can only find a 5A replacement locally, putting the 5A in gives me a Scan Motor error, when completely removing the fuse i get no error code. Then testing the transistors i now found 1x reading 0, annd the other 3 are variants in the range of 4.3 ish. The...

Hi there, please can you help me also with this service manual

Hey Fam. I have a Roland SP540i replaced encoder strip, sensor, cairaiage bearings to solve error code, this solved my problem but, now there is no ink on print or test print at all, prior to repair it was printing fine, ink pulls through capping on cleaning very clearly, Bothe 1.5A glass fuses...