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
"'"i
XA19-10,
22,
XA21-8,26,
XA22-59,
69,23s,
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
)7,
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
TheA61
board
assembly
is
not
included with
the
HP 8340B/41B
Traces
connected to
XA61
are
included
in
this
wiring
list
to
keep
signal
destinations
complete.
HP 8340B/41B
Change
5
Motherboard Wiring
List
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