Table
E-l.
Motherboard Wiring
List
Mnemonic
Source
Destination
EXT
TRIG A62J31-4.22
XA57-106
FAN1
FAN2
FANS
FAN4
A62K1-7
A62K1-10
A62P2
(SOLDER
PAD)
A62P1
(SOLDER PAD)
A62J30-3
A62J30-1
A62K1-5
A62K1-14,
A62XA35
FMOUT XA23-16
THRU A62J24 SMC CENTER TO
A44J3
FM
DRVR SHIELD
XA23-34
A62J24 SMC SHIELD
FM
INPUT
XA23-18
A62J17
SMC
CENTER
FM
SHIELD
XA23-17
A62J17 SMC SHIELD
FPNLSWP
FPNLSWP RTN
XA57-43
XA57-99
A62J9
SMC
CENTER
GUARD TRACE AROUND
FPNLSWP,
A62J9 SMC SHIELD
GND NOTES
c,<r,i
XA19-10,
22,
XA21-8,
26,
XA22-5,
6,
23,
24a,
XA23-8,
26,
XA24-8, XA25-9,
10,
31,
XA26-6,28,
XA27-6,
37,
XA28-6,
28,
XA34P2-10,11, XA35-4,
22,
XA36-1,
5,
6,
7,
8,10,11,14,
16,19,
20, 21,
22, 26,
29,
XA37-6,
9,10,13
THRU
17,
24,
27
THRU
35,
XA38-1 THRU
11,
14 THRU
26, 29, 30,
XA39-2
THRU
11, 13,
14,
17
THRU
26,28,
29,
XA40-2THRU
6,10,14,17,21,25,29, XA41-1,3,6,10,11,14,
16,18,
21, 22,
25, 26,
29,
XA42-10,
17,
20,
28, 35,
XA43-11,12,13,14,17,
27,
29,35,
XA52-19,43,
XA53-14,15,16,
33,
34,35,
XA54-5,
23,
XA55-5,
6,
20,
21,
XA56-5,
20,
A62J2-2,
19,
A62J3-2,
4,
A62J23
SHIELD,
A62C2(-),
A62C3(-),
A62C5,
A62C6(-), A62C7(-),
A62R3, A62R14, CHASSIS,
A62DS1
CATHODE
M/
N
ASSY
GND
PLANE,
T1
WHITE
WIRE,
ALL GROUNDS CONNECT TO THE
20/30
CASTING
GND PLANE GROUNDED TO
THE
CHASSIS
BY
THE CASTING AND TO
STAR
GROUND
GND HPIB
GND
PLANE
CONNECTED TO
REAR
PANEL
GND"
A62J7-12,
14,
16, 18,
20,
22, 23,
24
(NO
CONNECTION
-
THESE ARE
GROUNDED AT
THE REAR
PANEL)
XA22-14,
32a,
XA23-6,
24,
XA24-26,
XA27-7,19,38,
50,
XA57-1,
29,
30,
31, 34,
40,55, 56,70,
71, 72,
75,84,85,86,89,110,
XA58-1,
34,44,45,
46,
55, 56,
70,
71, 75, 89,
99,
101,
55,
110,
XA59-1,
40
THRU
44,
55,
56, 75,
96,
97,
110,
XA60-1,40
THRU
44, 55,
56,
70, 71, 72, 75,
96
THRU
100,110,
XA61-1,
34, 40,
41,42,43,44,
55,
56,
70,
71,
72,
75,
89,
96, 97,
98,
99,100,110',
A62J1-1,
21,
29,38,39,40,41,46,48,50,
A62J20-1.A62J31-12,35,
A62J35-10,
A62J19-1,9,
GND
PLANE
NEAR RF SECTION
M/N
assembly
ground plane connected
to Star Ground
through
W45.
20/30
loops
casting.
Star Ground
connected
to
A47W3,
and also to the M/N
assembly ground
plane
through
W45
Ground Is
connected
to the
chassis
Reserved
for
future
expansion-
Ground
Plane
is located
near
the
RF
Section
The
A61
board
assembly
is
not
included with the
HP
8340B
Traces
connected
to
XA61
are
included
in
this
wiring
list
to
keep
signal destinations
complete.
HP 8340B/41B
Motherboard Wiring
List
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