[Collins] SB 8(C) for KWM-2

[Dr. Gerald N. Johnson]

On Sun, 2007-05-27 at 17:44 -0500, Bob Littleton wrote:
> Gents:
> 
> I am doing service bulletins 8 (A), (B), and (C) to a WE, 1963 vintage KWM-2.  All has gone well until I reached SB 8(C).  Step (h) in SB 8(C) is as follows:  "Of the two white-green-blue wires connected to E40-I, disconnect, tape, and tie back the one showing continuity to the wire on TS11-1."  Here's the problem:  I have only one white-green-blue wire connected to terminal E40-I.  It shows continuity to the wire connected to TS11-1 (formerly connected to TS8-1).  I'm stumped.  Any suggestions?
> 
> Thanks and 73,
> 
> Bob, KB4X

Go by the schematic in SB8 or in the later KWM-2 manual found on the CCA
web page. That later manual shows the effects of each SB part and in the
schematic.

How are you sure its a 1963? By then serial numbers were being issued in
random order. Does it have a dated MCN tag? Or consistent tube date
codes?

It kind off sounds as if some similar mod has already been made in
manufacturing or previous maintenance.
-- 
73, Jerry, K0CQ, Technical Advisor to the CRA
All content copyright Dr. Gerald N. Johnson, electrical engineer