HP 8340b - Page 90

A55 Pin
I/O
Pin
1
16
2
17
3
18
4
19
5
20
6
21
7
22
8
23
9
24
10
25
11
26
12
27
13
28
14
29
15
30
Mnemonic
+20V
+20V
+5.2V
+52V
-40V/-40V
SENSE
(-)
-40V/-40V
SENSE
(-)
-10V
-10V
GND
GND
GND
GNO
LYSP
HSP
PRETUNE
PRETUNE
VCOMP
YO TUNE
RGND
RGND
RGND
RGND
SRFBK
SRFBK
SRPWR
SRPWR
HCEN
YOXISTB
YD CDIL +
YD COIL
+
Levels
+20V
+20V
+5.2V
+52V
-40V
XA53P1-11.30/XA53P1-23
-10V
-10V
0V
0V
0V
0V
TTL
(LDW
TRUE)
TTL
(HIGH
TRUE)
-25V/GHZ,
0V
=
23
GHZ
-25V/GHZ,
0V
=
2.3
GHZ
-26
MHZ/VOLT
OV±6V
0V
0V
0V
0V
-5V
TO
-17V
-5V
TO-17V
-5V
TO
-17V
-5V
TO
-17V
TTL
(HIGH TRUE)
-30V
TO
-39V
-40V
TO
-20V
-40V
TO
-20V
Source
XA52P1-16,
40
XA52P1-16,
40
XA52P1-17,18,41,42
XA52P1-17,18,41,42
XA53P1-11.30/XA53P1-23
*G/NOT
USED
XA53P1-12,13,31,32
XA53P1-12,13,31,32
A62 STAR GND
A62
STAR GND
A62
STAR GND
A62
STAR GND
XA59P1-11
XA57P1-13
XA54P1-24
XA54P1-24
XA54P1-27
E
STAR GND POINT
STAR
GND POINT
STAR
GND
POINT
STAR GND POINT
A
A
B
B
XA59P1-67
B
B
B
Destination
*G
*G
*G
*G
•G/NOT
USED
*G
*G
•G
*G
*G
*G
CD
*C
•A
*A
F
A62J6-SMC
CENTER
•H
•H
•H
*H
A62J29-2
A62J29-2
A62J29-3
A62J29-3
XA55P1-14
A62J29
PIN 4
*
*
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-115/A-U6