HP 8340B Manual page 84

A42
Pin
I/O
Pin
1
19
2
20
3
21
4
22
5
23
6
24
7
25
8
26
9
27
10
28
11
29
12
30
13
31
14
32
15
33
16
34
17
35
18
36
Mnemonic
LCK2
LCK1
HLE2
GND
DB1
DBO
DB3
DB2
DB5
DB4
DB7
DB6
DB9
DB8
DB11
DB10
500 KHZ REF
DIVN2
GND
GND
SW2
SW1
-10V
-10V
+20V
+20V
GND
GND
+5.2V
+52V
Levels
TTL
(LOW TRUE)
TTL
(LOW TRUE)
TTL (HIGH TRUE)
0V
TTL
TTL
TTL
TTL
TTL
TTL
TTL
TTL
TTL
TTL
TTL
TTL
TTL
TTL (LOW TRUE)
0V
0V
TTL
TTL
-10V
-10V
+20V
+20V
0V
0V
+5.2V
+5.2V
Source
XA59P1-109
XA59P1-54
XA59P1-53
A62 STAR GND
XA60P1-76
XA60P1-20
XA60P1-77
XA60P1-21
XA60P1-78
XA60P1-22
XA60P1-79
XA60P1-23
*
*
*
tt
D
B
A62 STAR GND
A62 STAR GND
A
A
XA53P1-12,13,31,32
XA53P1-12,
13,31,32
XA5201-16.40
XA52P1-16.40
A62 STAR GND
A62 STAR GND
XA52P1-17,
18,41,42
XA5201-17,18,41,42
Destination
A
A
*CD
*H
•A
*A
*A
'A
*A
*A
*A
*A
*A
*A
*A
*A
XA41P1-20
"C
"H
"H
XA40P1-22
*
-NOT USED
•NOT USED
•NOT USED
•NOT USED
*H
•H
*H
*H
A single
letter in
the source or destination column refers
to
a
function block on
this
assembly schematic-
An asterisk
(•)
denotes multiple sources or destinations; refer to the A62
motherboard
wiring list
for
a
complete representation of
signal sources and
destinations.
HP 8340B/41B
Assembly-Level Service After Service Safety Checks A-103/A.104