This is a known issue with LaserWriter driver 8.4.x versions. A newer version of the driver, LaserWriter 8.5.1, allows 4-digit page numbers to be entered into the page range fields of the Print dialog. LaserWriter 8.5.1 ships with the LaserWriter 8500 printer, and is also available for download from Apple Software Update sites.
These articles can help you locate the software update mentioned here:
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Where To Find Apple Software Updates" - Lists online services for free Apple software updates.
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Obtaining Apple Product Support in the USA" - Lists 800 numbers and online services for software updates, Apple support information, and a subset of the Apple Tech Info Library.