Roland RA640 Mainboard Roland SJ-1045 flow direction or valve specification

flow direction or valve specification can cause ink starvation

photos of the connector or installed position

confirm by old relay model and wiring position

drive board and firmware before ordering

Length: 65 cm Variant Options A-Buckle Style - 45CM (Cable - 024)

Roland RA640 Mainboard Roland SJ-1045 flow direction or valve specificationProduct Overview Roland RA640 Mainboard is a Roland RA 640 printer spare part for service, repair or preventive maintenance. It is intended for technicians and print shops that need to match the installed part accurately before ordering. Part Number and Compatibility Reference Part Number Confirm by board number Compatible Printers Roland RA 640 Part Type Mainboard Condition Confirm condition by batch Important: Roland RA 640 has water based and