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Home Forums 68kMLA SE/30 reset not working — #12
Post #12 by equill
Source Forum68kMLA
CategoryHardware
Post DateSat, 8 Nov 2008 - 14:17
Original URLhttps://68kmla.org/bb/threads/se-30-reset-not-working.15496/
Post
... same exact job as the switch would -- feeding ground through R5 to pin-6 of each Sony chip. If that causes a reset, you know your switch is bad ...
Entirely true (in the Bomarc schematics), but only part of the story given all the happenings at reset. The action above presumably invokes the chime 'I am resetting, o Master', but there is also the grounding of summat else by way of R11, and that is, presumably, the serious part of the reset: screen blanking followed by the rest of the chain of events. Even with the help of command-option-8, however, I could not, in a quick perusal, definitely trace the target of this action in my copies of Bomarc. What, in words, do the Apple schematics show?

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