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SCHEMATIC DIAGRAMS
SERVICE NOTES:
1. When replacing parts on circuit boards, clamp the lead wires to terminals before soldering.
2. When replacing high wattage resistors on circuit board, keep the resistor body 10 mm (3/8) from circuit board.
3. Keep wires away from high voltage and high temperature components.
PRODUCT SAFETY NOTICE
THE COMPONENTS DESIGNATED BY A
ON THIS SCHEMATIC DIAGRAM DESIGNATE COMPONENTS WHOSE
VALUES ARE OF SPECIAL SIGNIFICANCE TO PRODUCT SAFETY. SHOULD ANY COMPONENT
DESIGNATED BY A
NEED TO BE REPLACED, USE ONLY THE PART DESIGNATED IN THE PARTS LIST. DO NOT
DEVIATE FROM THE RESISTANCE, WATTAGE AND VOLTAGE RATINGS SHOWN.
NOTES ON SCHEMATIC DIAGRAMS
1. All resistance values in ohms K=1,000 M=1,000,000.
2. Resistors specified with resistance value are “1/6DJ.”
3. Resistors specified with type of resistor, tolerence and resistance value are “1/4.”
4. Unless otherwise noted on schematic, all capacitor values less than 1 are expressed in µF (Micro Farad),
and the values more than 1 are in pF.
5. All capacitors are 50 WV rating unless oterhwise noted.
6. Unless otherwise noted on schematic, voltage reading taken with VOM from point indicated to chassis
ground. Voltage reading taken using color-bar signal VHF channel 5, all controls at normal. Line voltage at 120
volts. Some voltages may vary with signal strength.
7. Waveforms were taken with color-bar signal and controls set for normal picture. Waveforms marked
with an
may vary with signal strength.
8. The Symbol indicates a fusible resistor, which protects the circuit from possible short circuits.
9. Parts enclosed with are related with X-radiation.
10. Isolation border line. Cold Side Hot Side
11. Schematic part location numbers may not always match the schematic symbols.
The schematic symbols and part descriptions are correct and should be used.
The part descriptions will be listed under the location number in the parts list.
ELECTROSTATICALLY SENSATIVE DEVICES
Many solid-state devices (especially Integrated Circuits) are Electrostatically Sensitive, and, there-
fore, require special handling techniques as described under “Servicing Electrostatically Sensitive
Devices,” on page two in this service literature.
Summary of Contents for DP15657
Page 28: ... 28 BLOCK DIAGRAM POWER LINES ...
Page 29: ... 29 BLOCK DIAGRAM SIGNAL LINES ...
Page 31: ... 31 IC1600 DC to DC Converter IC1620 DC to DC Converter ...
Page 32: ... 32 IC BLOCK DIAGRAMS CONT IC1630 DC to DC Converter IC1640 DC to DC Converter ...
Page 33: ... 33 IC5500 Screen Controller ...
Page 34: ... 34 IC BLOCK DIAGRAMS CONT IC5700 IC5720 DDR Double Data Rate SDRAM IC6100 TS Demodulator ...
Page 35: ... 35 IC6200 A D Converter ...
Page 36: ... 36 TROUBLESHOOTING FLOW CHARTS NO POWER ...
Page 37: ... 37 NO VIDEO ...
Page 38: ... 38 NO AUDIO TROUBLESHOOTING FLOW CHARTS CONT ...
