ASML 4022.428.1804 Processor PCB Board for PAS 5000/2500

The ASML 4022.428.1804 is a central processor board for the PAS 5000 and PAS 2500 stepper systems, serving as the main computational unit for system control, data acquisition, and operator communication. This board integrates a powerful CPU with extensive I/O capabilities to manage all stepper functions in real time.

Technical Specifications

• Part Number: 4022.428.1804

• Compatible Systems: ASML PAS 5000, PAS 2500

• CPU: PowerPC 750FX running at 800 MHz

• Memory: 512 MB SDRAM, 128 MB Flash, 2 MB SRAM

• Operating System: ASML Embedded Linux

• Interfaces: 2 x Fast Ethernet, 4 x USB 2.0, 1 x RS-232, 1 x VGA

• Expansion: PCI-104 bus for additional modules

• Power Consumption: 25 W typical

• Form Factor: 6U VME64

• Temperature Range: 0°C–50°C

Functional Description

The 4022.428.1804 board executes the main control software, which includes the real-time kernel, process scheduler, and device drivers. It communicates with I/O boards via the VME backplane, handling all timing-critical tasks such as exposure triggering and stage synchronization. The board also runs the operator interface and supports remote login for diagnostics. Its large memory allows for storing multiple process recipes and logs.

Installation and Setup

Install the processor board into the designated slot of the PAS subrack (typically slot 1). Connect the Ethernet cables for network access and the VGA cable to the display. The board obtains its IP address via DHCP or static configuration. During first boot, the operating system loads from Flash; then it mounts the network file system for application software. A setup wizard allows configuring system parameters, including language, date/time, and storage paths.

Software and Firmware Updates

Firmware updates are delivered as compressed packages via the Ethernet port. The update process preserves user data and settings. A dual-boot option allows rollback in case of update failure. The board supports remote update via the ASML Remote Update Tool.

Diagnostics and Troubleshooting

The board provides a comprehensive diagnostic menu accessible from the console. It includes memory tests, bus interface tests, and disk health checks. The board logs all system events to a circular buffer that can be exported for analysis. If the board fails to boot, a built-in recovery system allows reinstallation from a USB stick.

Maintenance and Reliability

With no moving parts, the board is highly reliable; MTBF is 100,000 hours. The battery-backed real-time clock should be replaced every 5 years. Periodic cleaning of the edge connector is recommended. The board has a temperature monitor that triggers a warning if overheating occurs.

Integration with PAS Systems

This processor board is fully compatible with all PAS 5000/2500 hardware and software modules. It runs the standard ASML control software stack, including the recipe manager, alignment routines, and exposure sequencing. It can also communicate with factory host systems via SECS/GEM.

Environmental and Safety

RoHS and CE compliant. Designed for Class 100 cleanrooms. ESD protection on all external ports.

Technical Support

ASML provides detailed hardware reference manuals, software developer kits, and troubleshooting guides. Field service engineers are trained in board-level repair. Spare boards are available for quick replacement.

Conclusion

The ASML 4022.428.1804 Processor PCB Board is the brain of the PAS 5000/2500 stepper. Its robust processing power, extensive connectivity, and reliable operation make it a cornerstone of the system’s performance.