Heathkit Service Bulletins - HD-8999 (Revised & Complete)
Joseph W Lutz
joelutz at JUNO.COM
Wed Jan 21 00:50:39 EST 1998
September 20, 1985
HD-8999 Bulletin No:
UltroPro CW Keyboard HD-8999-1
In Manual [PN 595-2941-01], the schematic shows the incorrect labels on
the leads of Q12 and Q13. The transistor symbols are correct, however,
the labels for the emitter and collector are interchanged. Make this
correction to your shop schematic for future reference.
-------------------------------------------------------------------------------------------------------------------
December 20, 1985
HD-8999 Bulletin No:
UltroPro CW Keyboard HD-8999-2
Seven Segment Display Change
The seven-segment displays at V201-V204 are changed:
From [PN 411-861] to [PN 411-884].
--------------------------------------------------------------------------------------------------------------------
Thats everything I hold up to 1989 that covers the HD-8999. Enjoy!
--------------------------------------------------------------------------------------------------------------------
73 de Joe W7LPF/4 [NNN0KUU]
QWCA - SOWP - NCVA - FISTS - RCC
Gordonsville, Va 22942 [Orange Co]
--- --- --- --- --- --- --- --- --- --- --- --- --- --
To subscribe: listserv at listserv.tempe.gov
and in body: subscribe HEATH yourfirstname yourlastname
To unsubscribe: listserv at listserv.tempe.gov
and in body: signoff HEATH
Archives for HEATH: http://www.tempe.gov/archives
--- --- --- --- --- --- --- --- --- --- --- --- --- --
More information about the Heath
mailing list