HP 8340B Manual page 79

A37
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
32
18
36
Mnemonic
DBO
DB1
DB2
DB3
DB4
DB5
DB6
DB7
DB8
DB9
GND
GND
DB10
DB11
LCK4
HULI
GND
GND
GND
GND
PH1
GND
PH2
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
+5.2V
+5..2V
Levels
TTL
TTL
TTL
TTL
TTL
TTL
TTL
TTL
TT;
TTL
0V
0V
TTL
TTL
TTL
(LOW TRUE)
TTL
(HIGH TRUE)
0V
0V
0V
0V
0 TO +5V
0V
0 TO +5V
0V
0V
0V
0V
0V
0V
0V
0V
ov
ov
ov
+5 2V
4-5 2V
Source
XA60P1-20
XA60P1-76
XA60P1-21
XA60P1-77
XA60P1-22
XA60P1-78
XA60P1-23
XA60P1-79
*
A62 STAR GND
A62 STAR GND
»
»
XA59P1-52
*G
A62 STAR GND
A62 STAR GND
A62 STAR GND
A62 STAR GND
E
A62 STAR GND
E
A62 STAR GND
A62 STAR GND
A62 STAR GND
A62 STAR GND
A62 STAR GND
A62 STAR GND
A62 STAR GND
A62 STAR GND
A62 STAR GND
A62 STAR GND
A62 STAR GND
XA5201-17,18,41,42
XA52P1-17.18.41.42
Destination
*B
*B
*B
*B
•B
•B
•B
•B
*B
*B
*H
*H
*B
•B
*B
XA59P1-106
*H
*H
*H
•H
XA36P1-24
*H
XA36P1-25
*H
•H
•H
*H
*H
*H
*H
*H
•H
•H
*H
•THRU A62L3 TO H
*THRU A62L3 TO 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