HP 8112A Operating, Programming And Servicing Manual page 343

Microprocessor Board
Change 14
Main Board
Control Board
In Appendix A, Table A-3 delete :
Al 08112-66501 R30
In Appendix A, Table A-5 modify:
A3 08 1 16-66523 Ul7
Component changes were introduced to improve overshoot. New
firmware was introduced with a new set of ROMS.
old firmware installed, signature analysis readings for the ROM
(
test see Trouble shooting in Chapter 10. 7) will be as detailed in
Table B-2:
For instruments with serial number 2343G01 130 and lower make the
following changes to the appropriate parts-list :
In Appendix A, Table A-3 delete :
Reference Description
Al 08112-66501 C541
In Appendix A, Table A-3 modify :
Reference
Al 08112-66501 C414
RlOO
R556
R557
In Appendix A, Table A-4 modify :
A2 08 112-66502 R7
Reference Description
R -F 200
Reference Description
IC-SN74LS 138
Capacitor 0.01 µF 100 V 0 160-3879
Description
Capacitor
Resistor network 7 x 10 k
Resistor
Resistor network 9 x 10 k
Reference Description
Resistor
R55
HP Part #
D
0757-0407
HP Part #
1820- 1216
If
you have the
HP Part #
HP Part #
15 pF
0 160-4385
1810-0206
13.3 k 1 % 0757-0289
1810-0280
HP Part #
5.62 k 0757-2000
4.42 k 0698-4442
Backdating B-9