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Subject: Chroma Polaris Service Manual

From: Chris Ryan <chris@...>
Date: 2009-07-01

New on the Rhodes Chroma site this month is the entire Polaris Service Manual in hypertext format, including large format schematics in PDF.

The Computer Tutorial may be useful as an introduction to the state of the art in the mid-1980s. Circuit Descriptions provides an overview of the main board, control panels, power supply, and output board. Disassembly covers just that; Diagnostics and Adjustments and Checkout should be useful for those who are repairing a Polaris keyboard. Options deals with memory and EPROM upgrades; and the Parts List "outlines most parts needed to service the Polaris."

Thanks to Steve Grom [21030502] for supplying a copy of the manual.


Chris