HP 8340b - Page 66

A23
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
+20V
+20V
+5.2V
+5.2V
LOMD
-10V
-10V
GNO
GND
-40V
DBO
OBI
DB2
DB3
DB4
DB5
DB6
DB7
W11R2
FMDRVR OUT
FMDRVR
SHIELD
FM
SHIELD
FM INPUT
Levels
+20V
+20V
+5.2V
+5.2V
TTL
(LOW
TRUE)
-10V
-10V
0V
0V
-40V
TTL
TTL
TTL
TTL
TTL
TTL
TTL
TTL
TTL
(LOW TRUE)
ANALOG
0V
0V
-8V
TO
+8V
Source
XA52P1-16.40
XA52P1-16,
40
XA52P1-17,18,41,42
XA52P1-17,18,41,42
•F
XA53P1-12,13,31,32
XA53P1-12,13,31,32
A62 STAR GND
A62 STAR GND
XA53P1-11.30
XA60P1-20
XA60P1-76
XA60P1-21
XA60P1-77
XA60P1-22
XA60P1-78
XA60P1-23
XA60P1-79
XA27P1-15
D
GND2G
GND1 G
J22
Destination
•G
•G
*G
*G
XA27P1-48
*G
*G
"G
*G
*G
E
E
E
E
E
E
E
E
E
A44A1J3
J22 SHIELD
A
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-67/A-68