Assuming those are the rails the carriage runs over, those are effectively a 'data bus' carrying the bits of the incoming character (converted to parallel from the incoming serial bitstream by the cam mechanism at the rear left of the typing unit). For some reason, one bit is set that shouldn't be. Either there's something playing up in that receiver cam unit, or the transmitter side is setting a bit that it shouldn't be. Is this an ASR32 (5 bit) or ASR33 (7 bit) machine? -tony

On Thu, 6 Oct 2005, Vintage Computer Festival wrote: I've been told the correct terminology for this is "code bale". If I hold it down at any point along its length then the previously non-working characters (C, V, CR, LF, etc.) now work. -- Sellam Ismail Vintage Computer Festival ------------------------------------------------------------------------------ International Man of Intrigue and Danger http://www.vintage.org [ Old computing resources for business || Buy/Sell/Trade Vintage Computers ] [ and academia at www.VintageTech.com || at http://marketplace.vintage.org ]