HP 8112A Operating, Programming And Servicing Manual page 355

Change 37
Instrument
Note
Change 38
Change 39
Main Board
Control Board
For instruments with serial number 2633G04605 and lower, make the
following changes to the appropriate parts-lists:
This change reverses change 34! . Do not reverse-implement this
change. Ignore it . Information here is for the sake of completeness
only.
Reversion to previous frame assembly.
modify:
Reference
AO 08112 MPS
This change applied only to a special version of the HP 8 1 12A, and
therefore is not detailed here.
Changes to part numbers on introduction of improved D / A converter
chips.
For instruments with serial number 2633G04830 and lower, make the
following changes to the appropriate parts-lists:
In Appendix A, Table A-3 modify :
Reference Description
Al 081 12-6651 1 R41 1
In Appendix A, Table A-4 modify :
Reference
A2 081 12-66502 U4,5,6 and
U12, 13,23
In
Appendix A, Table A-2
Description HP Part #
FRAME REAR 5021-0512
HP Part #
Resistor
2.37 k 0698-7245
Description
HP Part #
D/A Converter 10 bit 1826-0729
Backdating B-2 1