JEOL HSCAN CK PB Board BP101753-01 881577-02 DMA Control3 Electron Microscope

JEOL HSCAN CK PB Board BP101753-01 881577-02 DMA Control3 Electron Microscope

This is a JEOL HSCAN CK PB printed circuit board, part number BP101753-01 (sub-reference 881577-02), designed for use in JEOL DMA Control3 electron microscope control systems. The board carries JEOL's silkscreen markings on its PCB and is populated with a mix of large PLCC surface-mount ICs, DIP ICs, and blue electrolytic capacitors across its full length. It connects to the host system via a large card-edge connector and a high-density CN15 connector at one end, consistent with JEOL's internal control bus architecture.

Specifications & What's Included

• Manufacturer: JEOL
• Board designation: HSCAN CK PB (Horizontal Scan Clock/Pulse Board)
• Primary part number: BP101753-01
• Secondary / revision label: 881577-02
• Form factor: PCB card / module
• Edge connector: large card-edge connector (visible on long edge, image 2)
• Internal connector: CN15 high-density connector (visible top-side, image 5)
• Additional connector: CN1 (labeled on PCB near top edge)
• ICs: multiple large PLCC ICs (9+ visible in rows), DIP ICs including small logic packages near board markings
• Passive components: blue electrolytic capacitors throughout, film capacitors, resistor networks
• Board only — no cables, brackets, or accessories included

Applications

JEOL is a leading Japanese manufacturer of electron microscopes, including scanning electron microscopes (SEM) and transmission electron microscopes (TEM), widely used in semiconductor inspection, materials science, biology, and research laboratories. The DMA Control3 designation refers to a direct memory access–based control architecture used in JEOL's microscope control electronics from the late 1980s through the 1990s. Boards of this type handle scan signal generation and clock/timing control for the electron beam deflection system — coordinating the raster scan that forms the SEM image. Replacement and spare control boards like this one are sought by facilities that maintain JEOL instruments in service, university research labs, and independent microscope repair and refurbishment technicians. JEOL spare parts for legacy systems can be difficult to source new, making surplus boards a practical resource for keeping older instruments operational.