HP 8340b - Page 96

A59
Pin
I/O
(1
of
3)
Pin
1
56
2
57'
3
58
4
59
5
60
6
61
7
62
8
63
9
64
10
65
1)
66
12
67
13
68
14
69
15
70
16
71
17
72
18
73
19
74
Mnemonic
GND PLANE
GND
PLANE
HOVC
LSTP
LYSP
HSTD
HCEN
HSP
WPDAC
LIPS
LBX
SIOA
SIOB
ADRO
HFILYO
ADR2
ADR1
ADR4
ADR3
Levels
0V
ov
+3
VOLTS
-
OVEN WARM
TTL (LOW TRUE)
TTL
(LOW TRUE)
TTL
(HIGH
TRUE)
TTL (HIGH TRUE)
TTL (HIGH TRUE)
TTL
(LOW TRUE)
TTL
(LOW TRUE)
TTL (LOW TRUE)
TTL
(LOW TRUE)
TTL
(LOW TRUE)
TTL
TTL
TTL
TTL
TTL
TTL
Source
INSTRUMENT GROUND
INSTRUMENT GROUND
A62J3-3
G
G
G
XA57P1-13
A
XA52P1-36/A62J7-19
*
XA60P1-15
XA60P1-16
XA60P1-17
G
XA60P1-18
XA60P1-73
XA60P1-19
XA60P1-74
Destination
*J
*J
GXA6101-85
it
XA55P1-7
XA52P1-21
XA55P1-14
*B
XA54P1-36
*
i
*NOT
USED
*A
*A
•XA58P1-47, 72
*A
*A
*A
*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