Philips pm2521 - Page 141

PHILIPS
Scientific &
Analytical
Equipment
Test
&
Measuring
Instruments
Industrial
Automation
Advanced
Automation
Systems
Welding
Scientific
&
Industrial
Equipment
Division
820607
PM2521/22
SME94
Already issued
: SME93
Re : Service documentation for
the battery power supply
The service manual of the PM2521 together with this
information sheet comprise
the
service manual for the
PM2521/22.
CONTENTS
1.
CIRCUIT
DESCRIPTION
1.1.
General
1.2.
Charging
circuit
1 .3.
Level convertors
1.4. Schmitt
trigger
2. ACCESS
3. FAULT-FINDING
4. CHECKING AND ADJUSTING
5.
PARTS
LIST
5.1.
Resistors
5.2.
Capacitors
5.3.
Semiconductors
5.4. Integrated circuits
5.5.
Miscellaneous
CIRCUIT
DIAGRAMS
9499 478 12511
PRINTED IN THE
NETHERLANDS