HP 8112A Operating, Programming And Servicing Manual page 351

Change 26
Change 27
Main Board
Change 28
Control Board
Change 29
Main Board
For instruments with serial number 2522G02655 and lower.
This change was a change in part number for fuse Fl caused by
component obsolescence.
Changed the value of C246 on the main board to suppress an
intermittent and unwanted pulse in one of the width ranges.
For instruments with serial number 2522G03005 and lower, make the
following changes to the appropriate parts-lists:
In Appendix A, Table A-3 modify:
A l 081 12-66501 C246
Made R53 value selectable during manufacture and thus added an
alternative ( * ) value to the parts list .
For instruments with serial number 2522G03055 and lower make the
following changes to the appropriate parts-lists:
In Appendix A, Table A-4
A2 08112-66502 * R53
Component value change improved 101 variation about HI1.
For instruments with serial number 2522G03230 and lower, make the
following changes to the appropriate parts-list :
In Appendix A, Table A-3 modify :
Al 081 12-66501 R507
Reference Description
Capacitor
delete :
Reference Description
Resistor
Reference Description
Resistor
HP Part #
0.047 µF 0160-0575
HP Part #
4.42 k 0698-4442
HP Part #
178 k 0698-3243
Backdating B-17