Philips PM2517E - Page 78

14
r
t.
I
I
r
t
I
I
!,
t
t
t
l
t
t
t
I
I
6.3.5. Ditference
at + and
-
display in lunction
V
-
I
tr tne u'tference rs
>2 disrrs delect
000064 or V101
6.3.6.
Unslabledisplay
6.3.7.
ADC
not linear
t
t
l
I
t
Pl
d
tl
TI
c
*
d
c
rt
E Range
se eclrnq np!
t
lSin)O00064
(Ar
02)
Hi
=
At
02/23
LogrcO(-85V)
Reler
lo G
Check OO0059
rang ng
counler
G
D Adluslmenls
Fange
1 and
2 ol ADC
(adi
no.5
and 4)
Display :45mV
instead
ol 90mV
ol 900nrv
(= t,x
supplied voltage)
Delect
O0006a
G
S
gnal
Aulo
Zero
(AZ)
V10l
Hi
= gates
V1O1/V1011
Square wave
l0
I
t_J
85V
200 msec
H
Srgna Auto
Zero
lAZ)
Oa0059
H
=
D10l/1
Square wave
l0
aZ
I
L----.J _85V
, -o a7
I I
l erv-
200msec
Track nterruption
vr01iD10l
Delect
O00059
Deiecl
O00059
H
Dra n V10l/V1011
ts
=
d.arn V10l/V
l0l
measLrre
wrlh
Q-meter
n r
[44
ranqe
(PM2503)
Shorl c rcLrl
ADC,norl
.-0
5M!2
tluctual
ng
Constart
0i Short
c
rc! LI
V10l
rV
t
01
Conslanl 1[,t!,?
vt1lrrvl0l'
'1nIQ
Check
R10A R109
lracks
ADO
H
=
Bl08
r
qhl
hand
NO.
From
Measurement
N4easuring
poin
ts lvleas
u
n
ng
data
Correct
ln c o rrect
Inpul
ol ADC
sw lch ng
part
000060
{a
r
01)
Hi
=
ar01/12
26V
-32V
Both
srq
na
s should
Deiecl
O00060
B
Check
C104
C105.
cr
06
c r04
c105. ct 06
C l05
=
390pf
C 106
=
390pi
Reler
lo C
Rep are caprc
rors
C B ref
O00064
(Ar
02)
Hi
-
A102/ l4
Wrth
osc oscope
Oscr 1at
ons
chec
k
c110
(4n7)
Fefer to
D
D
c ref
O00064
tAr02)
+
120!A
E
0
Check R105. R106
R107,
Rr r3
F105, R106
R107. R113
R105
=
t0k2
R106
=
2k2
potenliometer
9k53
16k2
Defecl
OO0064
G
D
oo0060
(4r01)
Check
C101 and
lracks
H
=
4101i2
c10l
0
-85V
80kHz . . 100kHz
C
101
=
lnF-
Delecl
O00060
Deiecl
O00060
Feier
to c
Replace to
Cl01
No.
From
Ny'easurernent
lVeasuring
points
lvleasuring
data
Correct
tncorrecl
Display
Inpul
vollage;
+
30mV supplred
10
ADC
Hr
=
R108 fighl hand
Sei€cl; Range
999.9mV
On d isp
ay
300 OmV
Defect
000064
Fefer to B
Replace
V102
IIADC rs
str
nol
Inea.
Delecl 000060