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The
following signatures
ere for
the
outgo
erd
RAM
circuits.
The
signatures are
taken with the
start/stop
inputs of the signature
analyzer
connected to
A3TR1.
NOTE
•*Th««
slgnaiurti
apply
whtn V44 and
U4S
art
removed
from
their tochets.
•To
obtain
this signature,
a
10
K
resistor
must
be
connected between
the
5
volt
TP and
the
probe
Up
of the
signature analyeer.
To check
for
proper
logic tracer
connections
verify
signature
of *S
lest
point
Is
4FS3. The
signatures In
>6V:
4F53
Oils
section take
one
or
two
readings to stabllUe.
Pin
Signature
U34
1
7622
2
184P
3
1B4P
4
7622
S
7FPH
6
7FPH
7
0000
B
AFOP
9
AFOP
10
7622
11
UHUC
12
UHUC
13
7622
14
4FS3
U35
1
3A71
2
184P
3
184P
4
3A71
5
7FPH
6
7FPH
7
0000
8
AFOP
9
AFOP
10
3A71
11
UHUC
12
UHUC
13
3A71
14
4FS3
U36
1
4FS3
2
F281
3
AFOP*7078V
4
UHUC*F757*,*
5
7FPH*15FU*.*
6
184P*97C6*,'*
7
183F
8
0000
9
1PP6
10
183F
11
671
F
12
FF11
13
1UFP
14
143A
15
68P0
16
4F53
rin
Signature
U37
1
4FS3
2
F281
3
P6PH*3A9C*.*»
4
P961*H3FH*/*
5
8CPA*P2F8*.**
6
PH16*62PP*/*
7
4F53
8
0000
9
1PP5
10
4F53
11
93AF
12
U6FF
13
OHAH
14
4AC4
15
183F
16
4F53
U38
5
1PP5
8
1PP5
11
F281
12
1PP5
13
9037
U39
8
HF64
9
9037
U42
1
7822
2
P6PH
3
P6PH
4
7622
5
P961
6
P961
7
0000
8
PH16
9
PH16
10
7622
11
8CPA
12
8CPA
13
7622
14
4F53
U43
1
3A71
2
P6PH
3
P6PH
4
3A71
5
P961
6
P961
7
0000
8
PH16
9
PH16
10
3A71
11
8CPA
12
8CPA
13
3A71
14
4F53
Pin
Signature
U44
1
93AF
2
U6FF
3
OHAH
4
4AC4
5
1UFP
6
FF11
7
671F
8
0000
9
AFOP*7078'.'
10
184P*97C6*,**
11
UHUC*F757*.*
12
7FPH*15FU*.'
13
9037
14
7622
15
MSA
16
4F53
U45
1
93AF
2
U6FF
3
'
OHAH
4
4AC4
s
1UFP
6
FF11
7
671F
8
0000
9
PH16*62PP*.**
10
8CPA'P2F8',**
11
P961*H3FH'/'
12
P6PH*3A9C*.*'
13
9037
14
7622
15
143A
16
4F53
U46
1
HF64
2
7622
3
3A71
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