HP 8642A Operating Manual page 494

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INTERNAL
OSCILLATOR,
A2
J2
AM/PULSE
[FROM
FRONT
PANEL)
INTERNAL/
EXTERNAL
AH SNITCHES
AH
LEVEL
ADJUST
NORMAL/
DOUBLED
OUTPUT
SELECT
A2
J4
T->
AH OUT
DOUBLED
A2
J3
» AH OUT
v NORMAL
HI/LO
DETECTOR
DIAGNOSTICS
}
MODULATION
T->13 DIAGNOSTIC
BUS
HI/LO INTERRUPT
SS16
> HOD
- ^ 1 2 HI/LO
INT
A2
MODULATION
J
?
ADDRESS/ >-
J
7*~
DATA 8
SS18
5S-SEBVICE SHEET
R e f e r e n c e B l o c k Di 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
C49
C50
C51
C52
C53
C55
C56
C57
C5B
C53
C60
C63
C64
C65
C66
C67
CBB
C69
C70
C71
C72
C73
C74
C75
C7G
C77
C78
CB1
CB2
CBS
C12B
C140
X.Y
B, 3
B. 3
A, 1
A, 1
A, 1
A, 2
A. 2
A. 1
A, 1
B. 2
B. 2
8. 1
B. 1
B, 1
B. 1
B, 1
B. 1
B. 1
B. 1
B, 1
C. 2
C...-B
c;s
B. 1
B. 1
B, 3
S. 2
B. 2
B. 1
B.2
B. 3
B. 1
COMP
CR7
CRB
CR9
CRIO
C R l i
J l
J2
J3
J4
KJ
K2
R77
H7B
R79
RBO
RBI
RB4
RB5
RB6
R87
R88
BBS
RSO
R91
R92
R93
R94
R95
R96
R99
RIOO
R 1 0 1
R 1 0 2
X,Y
a. i
A, 1
A. 2
A, 2
C, 1
A. 2
A, 1
B. 1
C, 1
A, 1
B, 1
A. 1
A, 1
B, 2
B.2
B. 1
B. 1
B. 1
B. 1
B. 1
B. 1
B, 2
a, i
B. 1
B, 1
B.2
C 1
C. 2
B. 2
B. 1
B, 1
B, 2
a. 2
C O M P
R103
R104
R105
R108
R109
R110
R i l l
R160
R163
R 1 6 6
R169
R172
R175
R179
R1BB
TP13
TP14
TP15
TP1B
TP17
TP1B
TP19
TP20
T P 2 1
TP22
TP2B
X,Y
B. 2
B.2
a. i
B, 1
B, 1
B.2
C, 1
a. 3
B. 3
B.2
B. 3
B. 3
B. 3
B.2
B, 1
A. 1
A. 2
B, 1
B, 1
B.2
B, 2
B.2
C. 1
C. 1
B. 1
B, 1
COMP
Ul
U2
U3
U4
U5
U6
U13
U14
U15
U2B
U29
U30
U39
U40
U51
U52
VR1
VRB
VR7
<
X.Y
A. 1
A, 2
B. 1
B, 2
B.2
B, 1
A, 1
B.2
C. 3
C. 2
B.2
B, 2
C, 1
C. 1
a. 3
B. 3
A, 1
A. 2
A. 2
COMP X.Y COMP X.Y COMP X,Y COMP X,Y
COMP X,Y
P/OA2
s r
0 N
S S 1 5
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