Philips PM2517E - Starting Problems OQ0063

PHITIPS
equipment
for
science
and industry
SMEB4
$EHUIGE****m
800218
PM2s17
E/X
le
l
l
L
Alreody
issued r SME
83
Re
:
1.
Storiing
problems
OQ00l,3
: 2. Botiery
cover
: 3.
Predeflecfion
in the
mA
=':=
ronge
:
4. lncorrect reoding
in
the mA ronges
Storting
problems
OQ0063
.
-
Error
descript ion
.
lf
the PM251/ is
switched-on
in
the function
Q,
d
or
oC
*ith
op.n input or
Rx
8000,
it moy hoppen thot the
OQ0063
does not storf.
This con result in
the
following
errors:
-
Disploy
indicotes overlood
-
Disploy
indicotes o too low reoding
In both
coses fhe PM251Z does not reoct
on ronge commonds.
After
switching
OFF
ond
ON
ogoin or to the functions
V=, Vn
,
mA==or mArw
the instrument functions
correctly ogcr
in.
-
Couse
Storting
problems
of the OQ0063.
The
problem
only occurs
with new LC.
's
with
weeknumberT9l9 ond higher
(refer
to
sME 83).
-
Remedy
PM25I7E
DMOI 600
-
DM02 4926
PM2stTX
DM01 600
-
DM0l
3051
Only
when
the OQ0063 is reploced
by
o new type
(weeknumber
'-79.19)
the following
modificotion must
be built- in:
-
Remove copocitor
C407
(22nF
\
-
Short circuit resistor R4l3
(3k3)
-
Connect to
pin lZ
ond pin l5
($
)
of the
OQ0063
on electrolytic
copocitor
of
l5
PF,
10V in
porollel
with o resistor of
68
kQ, CR16.
(pin
lZ
of the
OQ0063 should be cut
off, refer to SME83).
R4l8
=
68 kO,
CRl6 5322
l l r
30291
c407- 1+
F
,
10V
s322 124
t4036
9499
478 10811
10
15
17 18