Philips PTV800, Service Manual

Page: 18 / 567

DIGITAL CONVERGENCE PANEL SCHEMATIC AND
WAVEFORM NOTES:
UNLESS OTHERWISE SPECIFIED:
1.
ALL VOLTAGES AND WAVEFORMS WERE TAKEN WITH AN NTSC COLOR BAR
PATTERN SIGNAL APPLIED.
2. SWEEP TIME/DIV SETTINGS ARE SHOWN JUST BELOW THE PHOTOS IN THE
CALIBRATED POSITION. HORIZONTAL POSITIONING OF THE WAVEFORMS WAS
ADJUSTED FOR MAXIMUM CLARITY.
DIGITAL CONVERGENCE PANEL SCHEMATIC NOTES:
UNLESS OTHERWISE SPECIFIED:
1.
ALL VOLTAGES AND WAVEFORMS WERE TAKEN UNDER THE FOLLOWING
CONDITIONS:
•
LINE VOLTAGE MAINTAINED AT 120VAC, 60HZ VIA AN ISOLATION
TRANSFORMER.
•
CUSTOMER CONTROLS SET TO FACTORY DEFAULT LEVELS AS FOLLOWS:
COLOR, TINT AND BRIGHTNESS SET TO MIDRANGE, PICTURE SET TO
APPROXIMATELY 2/3 (BETWEEN MIDRANGE AND FULL ON).
2. WAVEFORMS AND VOLTAGES (WITHOUT BRACKETS) WERE TAKEN WITH AN
NTSC SIGNAL GENERATOR DELIVERING 10mVp-p AT THE ANTENNA
TERMINALS.
3. VOLTAGES WITHIN PARENTHESES WERE TAKEN UNDER THE SAME
CONDITIONS AS ABOVE, ONLY WITH NO SIGNAL APPLIED. THEY ARE LISTED
ONLY WHERE AN APPRECIABLE CHANGE WAS NOTED.
4. FOR VOLTAGE, WATTAGE OR TOLERANCE RATINGS OF CAPACITORS OR
RESISTORS, REFER TO THE ELECTRICAL REPLACEMENT PARTS LIST.
5. SCHEMATIC SYMBOLS:
•
INDICATES THESE COMPONENTS ARE SMD "CHIP" TYPE COMPONENTS
AND AS SUCH, WILL BE LOCATED ON THE COPPER SIDE OF THE PRINTED
CIRCUIT BOARD.