Philips pm2521 - Page 181

9
10.4.
Test
1
(visual
L.C.D.
test, no
S.A.)
This
test is
a
visual
L.C.D.
test
which fills
the display,
segment
after
segment.
If all
segments
are lit
the
display
becomes
empty
and
the whole
measuring
sequence
starts
again.
Only
when
all
segments
are lit
can the test
be stopped
by
short
circuiting
TP10
and TP1 1
.
When a
connections
are short
circuited
then
the segments
will light
simultaneously.
NOTE:
1.
Testrom
placed in D
1909
socket (Both
ROMs
removed)
2. Short circuit TP
10
and
TP
11
3. Reading on display:
AH
segments will be filled.
ST3A73
820301
CONNECTION
TABLE
CONNECTIONS
D2901 D2902
D2903
D2901
LX-display
D2902
LX-display
D2903
LX-display
Output no.
Pin no.
Char.
Pin
no.
Char.
Pin
no.
Char.
Pin
no.
01
9
2 .3
22
a5
42
02
10
__
3
d3
23
b5
43
03
11
+
4
e3
24
g5
44
04
12
GATE 5
f3
25
c5
45
05
13
.1
6
a3
26
M
(Hz)
46
06
14
d1
7 b3
27
k
(Hz) 47
07
15
el
8
g3
28
Hz 48
08
16
f1 9
c3
29
Z
49
09
17
a1
10
.4
30
s
50
O10
18
b1
11 d4
31
V
51
Oil
19
gi
12
e4
32
A
52
012
20
cl
13
f4
33
*
53
013 21
.2
14 a4
34
m
54
014 22 d2
15
b4
35
55
015
23
e2
16
g4
36 °C
56
016
24
f2
17 c4
37
57
017 25
a2
18 .5
38
k
(12)
58
018 26
b2
19
dB 39
M
(12)
59
019
27
g2
20
e5
40
n.c.
-
020
28 c2
21
f5
41
n.c.
—