I picked up a cheap Roland SC-540 that is not working at all and I'd like to see if I can coax any life from it before I consider it scrap.
I do have the service manual that was posted in a thread by a member here and that was a great help to this point.
Current condition,
Service call 0002 (communications from servo board to main board)
Unit also powers itself on as soon as main power is applied.
I have poked prodded and probed and the system appears to have power & gnd's in all the right places on the main, head and servo boards, no blown fuses, no shorted or open fets and the /Servobrd reset line is being brought and held low by the main board.
I have tried it with and without all the sensor and accessory cables attached and the only one that makes a notable difference in its function is the panel board.
Without the panel board connected flipping the main power switch on the PSU turns on and the psu fan ramps up to a medium speed and main board LED is lit as is the carriage board LED.
servobrd reset get a poke of 3.3 then gets pulled to gnd (same happens with the servo board disconnected from main board)
With the panel board attached, the unit automatically powers on, psu fan ramps way up and goes to the 0002 error screen.
Using the panel power button to turn it off results in it turning itself back on within about a 2 second period. I've tried to get into service mode but it will not stay off long enough to do the sequence.
I've tried to flash the firmware and the pro2 app will not see the printer on the network but the intercon-net tool can find it just fine.
i'm willing to invest a little bit in time and components to see if I can make it work but buying a new main or servo board is out of the budget.
1, I'd still like to try and flash the firmware to eliminate the possibility of a software glitch, ideas how to get it recognized?
2, If its not a firmware issue, any pointers or ideas what area I should concentrate on to find the causing fault?
EDIT:
Additional Info, When powering it on the display shows "Cleaning..." first then flips to Service call. It never shows the Roland name or firmware version.
Thanks
Tom.
I do have the service manual that was posted in a thread by a member here and that was a great help to this point.
Current condition,
Service call 0002 (communications from servo board to main board)
Unit also powers itself on as soon as main power is applied.
I have poked prodded and probed and the system appears to have power & gnd's in all the right places on the main, head and servo boards, no blown fuses, no shorted or open fets and the /Servobrd reset line is being brought and held low by the main board.
I have tried it with and without all the sensor and accessory cables attached and the only one that makes a notable difference in its function is the panel board.
Without the panel board connected flipping the main power switch on the PSU turns on and the psu fan ramps up to a medium speed and main board LED is lit as is the carriage board LED.
servobrd reset get a poke of 3.3 then gets pulled to gnd (same happens with the servo board disconnected from main board)
With the panel board attached, the unit automatically powers on, psu fan ramps way up and goes to the 0002 error screen.
Using the panel power button to turn it off results in it turning itself back on within about a 2 second period. I've tried to get into service mode but it will not stay off long enough to do the sequence.
I've tried to flash the firmware and the pro2 app will not see the printer on the network but the intercon-net tool can find it just fine.
i'm willing to invest a little bit in time and components to see if I can make it work but buying a new main or servo board is out of the budget.
1, I'd still like to try and flash the firmware to eliminate the possibility of a software glitch, ideas how to get it recognized?
2, If its not a firmware issue, any pointers or ideas what area I should concentrate on to find the causing fault?
EDIT:
Additional Info, When powering it on the display shows "Cleaning..." first then flips to Service call. It never shows the Roland name or firmware version.
Thanks
Tom.
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