HP 8642A Operating Manual page 411

a
A4
PI
ADDRESS v j ,
LINES
>~-*-
DATA
BUS
y^-*
16
BUS
TRANSCEIVERS
A4
PA
KEYBOARD
MATRIX >^
LINES
INSTRUMENT
SENSE G
DETECT
LINES
DIAGNOSTIC
BUS
LINES
I/O
DECODE
VOLTMETER
SS10
O/A
OUTPUT LATCH ENABLE
SS8
DATA BUS
ie
INPUT LATCHES
OUTPUT
LATCHES
INSTRUMENT
-»CONTROL
L I N E S
X - A X I S
SMEEP
SS11
OUT-OF-LOCK
DETECT
SS9
SS-SERVICE SHEET
R e f e r e n c e B l o c k D i a g r a m
C o m p o n e n t C o o r d i n a t e s
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
H P l
MP2
PI
P2
P3
P4
R7
R12
R I B
R19
R21
R22
R25
R26
R27
S I
Ul
U24
U27
U2B
U29
U3Q
U31
U32
U33
U34
U35
U3B
U42
U43
U44
A. 1
A, 1
□ , 1
A, 3
B, 3
C, 3
D, 3
A. 1
C. i
B, i
B, 1
D. 1
D, 1
D, 2
D, 2
D, 2
D, 1
A. 2
C. 2
C, 3
D, 2
D. 1
A. 2
C. 2
A. 2
C, 2
A, 2
A, 1
D. 2
B. 1
B. 2
C. 1
U45
U47
B. 2
D. 2
P/O A 4 LATCH MODULE
SEE REVERSE SIDE
SS8