HP 8112A Operating, Programming And Servicing Manual page 340

Main Board
Change 8
Microprocessor Board
Change 9
Microprocessor Board
B-6 Backdating
In Appendix A, Table A-5:
A3 081 16-66523 U5
In Appendix A, Table A-3 delete :
Al 081 12-66501 CR513
An extra test point and an isolator link were added to the
microprocessor board to improve test facility.
For instruments with serial numbers 2136G00405 and lower, make the
following changes to the appropriate parts-list:
In Appendix A, Table A-5 delete :
A3 081 16-66523 TP8
Two bus termination resistor networks were changed to reduce
crosstalk.
For instruments with serial number 2136G00579 and lower, make the
following changes to the appropriate parts-list :
In
Appendix A, Table A-5 modify:
A3 081 16-66523 R15
Correct Part Numbers
Description
Reference
ROM
U6 ROM
ROM
U7
ROM
U8
ROM
U9
Reference Description
DIODE
CR514 DIODE
Reference Description
Test point
W2
Wire jumper
Reference Description
R-NETWORK 47 k 1810-0378
R16 R-NETWORK 47 k 18 10-0378
HP Part #
081 12-13701
081 12-13702
081 12-13703
081 1 2-13704
081 12-13705
HP Part #
HP Part #
0360-0535
8159-0005
HP Part #