Philips PM2517E - Indication LED MAIN Is Not Lighted; No LED Lighted; Only Indication Leds Are Lighted

10
6.2. DISPLAY
lvleasuring
points
r,
[,
r
t
r
L
L
r
L-
t
?
i
t
t
t
t
t
t
t
t
t
t
r
t
t
Display
r
6.2.1. No LED
Lighted
No.
From l\y'easurement
lvleasuring
points
Measu ring
data Correct
Incorrect
Supply vollage
Hi
=
C804
(+
)
Hr=
C802
,
(-)
+8V .
+9V
-8V -9V
Check
power.
suppry
Refe( to 6.1.1.
6.2-2. Only indication LED's
are
lighted
(+,
-,
MAN, MO, mva)
No.
From Measurement
Measuring
points
Measu
ring
data Correct Incorrect
Srrpply
voitage
Hi
=
c804
(+
)
Hr
=
C802
(-
)
+8V.. +9V
,8V -9V
Refer to
B Check
power
supp
v
Feiert to
6.1
1
LED s are supp ed
lrom the
batter es
B Blank
d
rsp
ay Hi= D70l/4
Log
c 1
=
drsp
ay
(0V)
Logrc
0
=
blank d isp
ay
(-8
5v)
Check D701 Check d sp ay
6.2.3. Indication
LED IVIAN is not liohted
Measurement
l\y'easuring
data Incorrecl
n manual ranqrnq
No
LED
MAN
rqnreo
-
V supply s
Be{er io
6.1
1
6.2.4. One 7.
segmenl is lighted very bright
No. From
i\,,leasurement N4easuring
points
lVeasu ring data
Correct tncorrect
Su
pply
vollage
Hi=c804 (+)
Hr
=
C802
(-
)
+8V +9V
8V
-9V
Befe.
lo I Check
power.
Refert to 6l l
B
C ocksrgna OQ0060
(4101)
Hi
=
A101r2
Wilh oscrlloscope
nnnn0
80kHz . . 120kHz
Reief
to C
c B
Su
pply
vollage
()1
oo0060
(4101)
H:4101/13
(+)
Hr=4101/1
(
)
Lo
=
0.socket
+
+8V
-8V
8V .
-9V
Reler
to D
D C Data
srqnal OO0059
(D
101)
Hl= D101/14
a. Open
nput
(V
and 0)
b. Short crc!it in
pul
(V
and 0)
Wllh oscilloscope
a. B ock srqnal
varyrng
wrlh
Input
srg
nal
b Block srgnai
,/:
x
clock
s
gna
000060
Logic0=-85V,
Logrc
1=0V
Reter to
E
No
siqna
Too
small sig
na I
1200mVl
Detecl
O00059
E D Vollaqe
over C101
(o00060.
Ar 01)
Hi
=
a101/4
l.r i
=
At01/5
5 6V: De{ect O00060