Philips PR1906C121, Technical Service Data

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SAP Second Audio Program
SCL Serial Clock
SDA Serial Data
SDAM Service Default Alignment Mode
SVHS Super Video Home System
THD Total Harmonic Distortion
Top Level Menu This refers to the main menu (as opposed to sub menus) in SAM
V-Chip Violence-Chip
VCR Video Cassette Recorder
Y/C Luminance/Chrominance (video)
Safety Instructions - Resolder Notice
1
Safety regulations require that during a repair:
•
the set should be connected to the mains via an isolating transformer
•
safety components, indicated by the symbol:
should be replaced by components identical to the original ones
•
when replacing the CRT, safety goggles must be worn
2
Safety regulations require that after a repair the set must be returned in its original condition. In
particular, attention should be paid to the following points:
Note:
This resoldering is advised to prevent bad connections due to metal fatigue in solder joints, and
is therefore only necessary for television sets older than 2 years.
•
As a strict precaution, we advise you to resolder the solder joints through which the horizontal
deflection current is flowing, in particular:
-
All pins of the line output transformer (LOT)
- flyback capacitor(s)
-
S-correction capacitor(s)
- line output transistor
-
pins of the connector with wires to the deflection coil
- other components through which the deflection current flows
•
Resolder points are marked by a white circle on the bottom of the CBA.
•
The wire trees and EHT cable should be routed correctly and fixed with the mounted cable
clamps.
•
The insulation of the mains lead should be checked for external damage.
•
The mains lead strain relief should be checked for its function in order to avoid touching the
CRT, hot components or heat sinks.
•
The electrical DC resistance between the mains plug and the secondary side should be checked
(only for sets which have a mains isolated power supply).
This check can be done as follows:
-
unplug the mains cord and connect a wire between the two pins of the mains plug
- set the mains switch to the on position (keep the mains cord unplugged!)
-
measure the resistance value between the pins of the mains plug and the metal shielding of
the tuner or the aerial connection on the set. The reading should be between 4.5 Megohm and
12 Megohm.
- switch off the TV and remove the wire between the two pins of the mains plug
•
The cabinet should be checked for defects to avoid touching of any inner parts by the customer.
AC Cord Lead Dress