Philips pm2521 - Page 163

PHILIPS
Scientific
&
Industrial
Equipment
Division
820214
PM
2521 SMElOl
Already
issued
:SME
93,
SME
94,
SME 95.
Re
;1.
Erratum
of
SME
95
2.
Replacement
of
ROM's
(2x2k
>lx4k)
As
documentation
for the
PM
2521
the
service manual
9499
475
01911,
SME
93,
SME
94,
SME
95 and
this
information
sheet
should
be
used.
1.
Erratum
of SME 95
The following
code
numbers
should be
added
and modified.
Chapter
Part
Old
code
number
New
1
code
number
5.1 Mains
connector 5322 267 44135
5322 267
30434
5.2
Carrying
handle 5322 498
50126
5322
498
54105
5.3
Front
5322 447
74009
5322 447
70053
Test
prod,
red 5322
264
20064
5322
264
20046
2. ROM's
(2x2k--->lx4k)
From serial
number
DY
02 6611
onwards, the
PM 2521/02...
is
supplied
with
one 4k ROM.
POS.NR.
Description
Ordering code
Replaced by
Description
D1909
ROM
(2k)
5322 209
54696
obsolete
D1920 ROM (2k) 5322 209
54699
5322 209
81665
ROM
(4k)
If
an
instrument,
with
2x2k
ROM's,
has to
be
modified
to
an
instrument
with
a 4k
ROM,
proceed as
follows:
Unsolder the two
soldering
spots
(see fig 1
and
fig
2
item
1)
-
Repair
the track
interruption
(see
fig 1
item
2)
-
Place
a
jumper.
Ordering code
5322 263 64007
(see
fig
1
item
3)
Scientific
&
Analytical Equipment
Test
&
Measuring Instruments
Industrial Automation
Advanced
Automation
Systems
Welding
9499
478
13211
PRINTED
IN
THE
NETHERLANDS