HP 7475A Service Manual page 39

Section V Model 7475A
ITEM4
Date code 2420-11 introduced a design change that eliminated inductive voltage spikes in the motor drivers when the
plotter was switched off. The part numbers that differ from those listed in Section IV are:
REFERENCE
DESIGNATOR
AlDSl-2
A1DS3
AlE3
AlE6
AlE14-19
AlE21-23
A1H3-6
A1H9-12
MAIN PCA, HP-IB, OPTION 002
PART
NUMBER
1990-0485
1990-0487
1200-0567
1200-0654
2110-0597
07470-40038
0515-0055
0535-0031
DESCRIPTION
LED
LED
SOCKET
SOCKET
FUSEHOLDER
SPACER
SCREW
NUT
ITEMS
CHECK
DIGIT
5
7
1
7
7
6
8
2
Serial number prefix 2325A is the original serial number prefix of the plotter at the time of product introduction. Except
for the following part numbers, all plotters with the serial number prefix 2325A have the same parts as those listed in
Section IV of this manual.
REFERENCE PART
DESIGNATOR NUMBER
7475-A-80-1
16
1460-2023
1460-2029
1460-2030
39 5040-8666
46 5040-8667
DESCRIPTION
SPRING-SILVER 2.54 CM-L
SPRING-COPPER 3.0 CM-L
SPRING-CHROME 3.33 CM-L
ARM-PINCH ROLLER (LEFT)
CHASSIS
Partial Diagram of Model 7475A Exploded View
5-4
CHECK
DIGIT
8
4
7
1
2
-~
I
I
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