Philips PM2517E - Page 77

I
I
I
I
6.3.2.
Dlsplay constant
0
(Overrang€)
6.3.3. Display will nol
become
zero with
shorcircuiled ADC
input
73
No.
From Measurement
Measuring
points
Measuring data Correct
tncorrecl
Overrange
(OVR)
hEF
4555
(0702)
Hi
=D7O211
Shortcircuil
ADC input
Loqrc0(-85V)
Delecl HEF 4555
\o742)
Reler lo B
a
Oveffange
(OVB)
oQ0059
Hi= D10r/19
,
Shorrcircuit
aDC in
put
Losc0(-85V)
Track n1702) Refer lo I
B Overranqe
(OVR)
oo0059
1D10r)
Hi=
Dl01/19
,
Shortcircuit
ADC npu t
Loqic0(-85V)
Reler
ro
C
c B
Data
signal 000060
(ar
01)
Hi
=
4101/15
r
Shoncircuit ADC inpul
cLock 4101/2 80..120kH2
DATA 4101/15 T,xclock
J-l_-l_-L
symmelncal
Delect O00059
Inpu i ADC;
Hi
=
R108
righl
hand side
I
No. From Vleasurement l\4easuring
points
lVeasu ring data Correct
tncorrecl
lret OQ0064
(4102)
Hi
:4102i
14
Short clrcuil ADC
input
Reler to B
Check adluslmenlsi
.
Reference
current
ADC
(adJ.
no.2)
.
Range
2 ol ADC
(adt.
no.4)
Rr07
R106
Short crrcuit
/
DC
Inpl]l
Rl07 adiusl
ng
resrslor
9k53... 16k2
Poteniiometer 2k2
R105
=
10k2
Delect
OQ0064
c lref
000064
(4r02)
H
=
Al02/14
,
Wilh oscilloscope
Shori crcuit ADC
inpu
t
Osc ations
Check capaclor
c]10
Refer to D
D C lnput of ADC
Swrtchrng
Pa(
oo0060A(10r)
H
=
A10r/10
H
=
4101/12
I
^,^w.V.
>lomv Defect O00060 Check:
C103. R104
Track
Inlerruplron
lnput ADCi
Hi
=
F108
nghl hand
s de
6.3.4. No
adjustment
ol instrument
possible,
stable
display, input vollage supplied lo
ADC
No. From Measu
rement
N4easuring
points
Measu
ring
data Correct
lncorrect
lret OQ0064
(A102)
Hi
=
A1A2l14
Shorl circuil ADC
inpul
+ lz0pA
Reler to C, O E,
F Feier to B
Check
Fr05. R106, Rr07
and R]13
Rr05. Rr06,
R107,
R113
Rl05
=
10k2
R106
=
2k2
polenirometer
R107
=
AdJusting
9k53.
r6k2
8113
=
1k4
Detecl 000064
c
Adjuslrnent Range 1
ol ADC
(adj.
no.5)
Check Fl10. R112 R110
=
1k05
R112
=
Adjustrng
9k53...12k4
F110i
R1r2
-1kA)
Reier to D
D
CRange selecting input
l(Sin)
000064
l(a102)
Hi
=
4102/23
|
Log c 0
(-8.5v)
Reier to G
Check O00059
rangrnq
counrer
E Adjuslmenl Range 2
Ol ADC
(adi.
no.4)
Check
R111, Bl l4
8111:10k5
R114
=
adjusting
95k. .124k
R111//F114
=
=10k