20
SCHEMATIC DIAGRAMS
NOTES:
1. RESISTOR
Resistance is shown in ohm [K = 1.000, M = 1.000.000]. All resistors are 1/6W and 5% tolerance car-
bon resistor, unless otherwise noted as the following marks.
1/2R = Metal or Metal oxide of 1/2 watt
1RF = Fuse resistor of 1 watt
1/2S = Carbon composition of 1/2 watt
10W = Cement of 10 watt
K = ±10%
G = ±2%
F = ±1%
2. CAPACITOR
Unless otherwise noted in schematic, all capacitor values less than 1 are expressed in
µ
F, and the val-
ues more than 1 in pF.
All capacitors are ceramic 50V, unless otherwise noted as the following marks.
Electolytic capacitor
Mylar capacitor
3. The parts indicated with have special characteristics, and should be replaced with identical parts
only.
4. Voltages read with DIGITAL MULTI-METER from point indicated to chassis ground, using a color bar
signal with all controls at normal, line voltage 120 volts.
5. Waveforms are taken receiving color bar signal with enough sensitivity.
6. Voltage reading shown are nominal values and may vary ±20% except H.V.
WARNING
BEFORE SERVICING THIS CHASSIS, READ THE WARNINGS AND CAUTIONS
IN THE PREFACE.
CAUTION
The international hazard symbols in the schematic diagram and the parts list des-
ignate components which have special characteristics important for safety and
should be replaced only with types identical to those in the original circuit or specified
in the parts list. The mounting position of replacements is to be identical with origi-
nals. Before replacing any of these components, read carefully the PRODUCT
SAFETY NOTICE. Do not degrade the safety of the receiver through improper ser-
vicing.
+
M
Summary of Contents for 20VL14
Page 1: ...SERVICE MANUAL FILE NO 050 200415 20VL14 LCD TELEVISION ...
Page 8: ...8 LAYOUT OF MAJOR BOARDS Main board Inverter board Light receiving board Key control board ...
Page 9: ...9 MECHANICAL DISASSEMBLY B214 A108 B210 B211 A106 A102 B211 A107 A104 B215 ...
Page 10: ...10 B208 B205 B204 B209 B207 B214 B210 A101 U003 B212 B203 B202 U004 B209 W601 ...
Page 11: ...11 U002 B208 A105 B201 U001 B206 B211 U902 E901 ...
Page 12: ...12 PACKING DISASSEMBLY Accessory Box LCD TV Set Battery Y151 A703 A702 Y101 A701 Y150 K901 ...
Page 14: ...14 CIRCUIT BOARD DIAGRAMS MAINBOARD 0171 4 ...
Page 15: ...15 ...
Page 16: ...16 0171 5 ...
Page 17: ...17 ...
Page 18: ...18 KEY CONTROL BOARD LIGHT RECEIVING BOARD ...
Page 19: ...19 EARPHONE BOARD ...
Page 42: ...TOSHIBA CORPORATION 1 1 SHIBAURA 1 CHOME MINATO KU TOKYO 105 8001 JAPAN ...
