Philips VS23605T - Service Information and Updates; System Service Information

Black and White Observation system VM6
Service
Service
OP04
98.05
Service
NORTH-AMERICAN MODELS:
Service Manual: 8109 Sup. 2
This
Service
information
is
valid
for
the
VM6
POS
(VSS2360/oor
&
VS23605T
&
VS23655T),
the
VM6
Retail
(VSS2260/o0r
&
22MS605R
&
VS22605R)
and
the
VM6
Slave
(VSS4460/oor
&
VS44605T)
and
can
be used
in
addition
to
Service manual
4822
727
21404.
Herewith a possible symptom is given with its solution which can take place :
=» Due to tolerances of components it can occur - in some cases - that the system power supply will not start-up or will start-up after
about 2 to 10 minutes, regardless the amount of camera’s that is attached to the system. It mostly will occur at low mains voltages.
When the control IC (7110) of the SOPS draws almost 1mA of input current at pin 7 the threshold of about 17V5 will not be
reached and the power supply will not start-up.
The solution for this problem is to exchange D6121 (20 volt Zener) with a Zener diode of 24 volt (4822 130 34398).
Remark : \t is advised to exchange the Zener diode precautionary when the monitor comes for a repair at the repair centre.
=» In the Service Manual of the VM6 family with code number 4822 727 21404 there are on page 25 (Spare Parts list) two different
types
of
transistors
mentioned
for
7130.
It
is
adviced
to
use
for
7130
the
MTP3N60
type
with
code
number
4822
130
10166.
Published by EvO 9866 VCM Service Department Printed in The Netherlands Copyright reserved Subject to modification 4822 727 21413
————————— See ee EE fet CNA
PCS 97 100 GB