Philips EM3E, Service Manual, Page: 5 / 120

Safety & Maintenance instructions, Warnings and Notes GB 5 EM3E 2.
2.4 Notes
• The direct voltages and oscillograms should be
measured with regard to the tuner earth (
) or hot earth
( ).
• The direct voltages and oscillograms shown in the
diagrams are indicative and should be measured in the
Service Default Mode (see chapter 5) with a colour bar
signal and stereo sound (L: 3 kHz, R: 1 kHz unless stated
otherwise) and picture carrier at 475.25 MHz.
• Where necessary, the oscillograms and direct voltages
are measured with (
) and without ( ) aerial signal.
Voltages in the power supply section are measured both
for normal operation (
) and in Standby ( ). These
values are indicated by means of the appropriate
symbols.
• The picture tube PWB has printed spark gaps. Each
spark gap is connected between an electrode of the
picture tube and the Aquadag coating.
• The semiconductors indicated in the circuit diagram and
in the parts lists are completely interchangeable per
position with the semiconductors in the unit, irrespective
of the type indication on these semiconductors.
• Manufactured under license from Dolby Laboratories
Licensing Corporation. DOLBY, the double D symbol and
PRO LOGIC are trademarks of Dolby Laboratories
Licensing Corporation.
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