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HP 8642A - Page 310

HP 8642A
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<r
KEYBOARD
A1A1
Jl
SWITCH
J0<
"
14
A1A2
Jl
KEY-
1
vBOARD
^MATRIX
LINES
SS1
LCD
DISPLAY
<B)
LCD
SERIAL
4-
IN DATA
LCD
DRIVER
<-
INPUTS
11
LCD PULLUPS
LCD DRIVERS
SS3
HP-IB
SHITCHES
RP6
SS2
SS-SERVICE SHEET
HP-IB
-» SNITCH
OUTPUTS
-> 49
RPG DIH
->50
RPG
CHANGE
Reference Block Diagram
Component Coord
i
nates
COMP
X,Y
COMP
X,Y
COMP
X,Y
COMP
X,Y
COMP
X.Y
COMP
X.Y
COMP
X,Y
COMP
X,Y
COMP
X,Y
Jl
RIO
SI
S2
S3
34
S5
S6
S7
SB
S3
SIO
Sil
sia
S13
S14
515
S16
S17
S18
S19
S20
521
S22
S23
S24
S25
S26
S27
S2B
S29
S30
S31
S32
S33
A.
2
A.
2
B.
2
B,
S
B,
2
B,
2
C,
2
C.
2
C.
2
C.
2
C.
2
8,3
B.
3
B,
3
C.
3
C.
3
C.
3
C.
3
0,2
B.
3
B.
3
B.
3
C.
3
C.
3
C.
3
S34
S35
S36
S37
S38
S39
540
S41
S42
S43
S44
S46
TP1
TP5
C.
3
A,
3
A.
3
B,
3
B.
3
B.
3
0.
3
C.
3
C,
3
C,
3
C.
3
A,
2
A,
3
A,
3