Sunstar Original Servo Drive Board SDB REV03D (CPT-XY) for Embroidery Machines
XY axis problems usually die in the drive board.
Rough frame movement, axis alarms, or one axis lagging — the drive board’s power stage is the common cause. This is the original unit, not a rebuilt one.
The Sunstar SDB REV03D (CPT-XY) board pairs Fuji FK20SM power modules with a full-width aluminum heatsink, plus opto-isolated control inputs.
Why this board handles production duty
•Fuji FK20SM power modules ×6 — industrial power devices sized for continuous axis drive.
•Full-width heatsink keeps the power stage cool at full speed.
•Isolation stage. PT115A/PT5060 opto elements separate control logic from power switching.
•Multi-rail output. +12V / -5V / GND / +5V / -12V rails printed at the connector for wiring verification.
•UL MCC-2 marking on the board.
Fitment: Match REV03D (CPT-XY). This board is filed under SWF but carries Sunstar Electric branding — confirm your machine’s drive system before ordering.