File name PANASONIC LCD TX-20LA80F, TX-20LA80FS GLP21L SM.pdfORDER No. PCZ0804036CE
Service Manual
Colour LCD Television
TX-20LA80F TX-20LA80FS
GLP21L Chassis
Specifications
Power Source: Power Consumption: Stand-by Power Consumption: Aerial Impedance: Receiving System: 220-240V AC, 50Hz 52W 1W 75 unbalanced, Coaxial Type PAL-B/G/I, D/K, SECAM B/G, D/K, L/L' PAL-525/60 (AV only) M.NTSC (AV only) NTSC (AV only) AV2 IN Terminals: AV1 IN
OUT
Video (21 pin) Audio (21 pin) RGB (21 pin) Video (21 pin) Audio (21 pin) S-Video IN (4-pin) Audio (RCAx2) Video (RCAx1) Audio (RCAx2)
1V p-p 75 500mV rms 10k 0,7V p-p 75 AV1 1V p-p 75 500mV rms 1k Y: 1V p-p 75 C:0,3V p-p 75 500mV rms 10k 1V p-p 75 500mV rms 1k
Receiving Channels: VHF E2-E12 VHF H1-H2 (ITALY) VHF A-H (ITALY) VHF R1-R2 VHF R3-R5 VHF R6-R12 UHF E21-E69 CATV (S01-S05) CATV S1-S10 (M1-M10) CATV S11-S20 (U1-U10) CATV S21-S41 (Hyperband) Operating Conditions: Temperature: Humidity: 5°C ÷ 35°C 5% ÷ 90% RH (non-condensing)
AUDIO OUT LCD screen:
L5EDD5L00011 640 x 480 VGA, 4:3 Visible Diagonal 508mm 2x3W RMS 8 impedance 3,5mm, 8 Impedance Remote Control 2 x R6 (UM3) Batteries Height: 484mm 443mm 7,5kg Width: 498mm 498mm Depth: 233mm 98mm
Audio Output: Headphones: Accessories supplied : Dimensions: Including TV stand TV set only Net weight:
Intermediate Frequency: Video/Audio Video 38,9MHz, 33,9MHz Audio 33,4MHz (B/G), 33,16MHz (A2) 33,05MHz (NICAM B/G, D/K, L) 32,4MHz (D/K), 32,66MHz (CZ STEREO) 40,4MHz (L'), 39,75MHz (L'NICAM), 32,35MHz,32,9MHz (NICAM) 34,47MHz (PAL) 34,5MHz, 34,65MHz (SECAM) 38,3MHz, 38,15MHz (SECAM L')
Colour
Specifications are subject to change without notice. Weights and dimensions shown are approximate.
Contents
SAFETY PRECAUTIONS ... 3 GENERAL GUIDE LINES... 3 TOUCH CURRENT CHECK... 3 PREVENTION OF ELECTROSTATIC DISCHARGE (ESD) TO ELECTROSTATICALLY SENSITIVE (ES) DEVICES ... 4 ABOUT LEAD FREE SOLDER (PBF)... 5 SUGGESTED PB FREE SOLDER... 5 SERVICE HINTS ... 6 CHASSIS BOARD LAYOUT ... 7 SETTING INSPECTION... 7 SELF-CHECK ... 8 ADJUSTMENT METHOD... 9 BLOCK DIAGRAMS... 10 PARTS LOCATION... 13 REPLACEMENT PARTS LIST... 14 SCHEMATIC DIAGRAMS ... 21 A-BOARD SCHEMATIC DIAGRAM ... 22 P-BOARD SCHEMATIC DIAGRAM ... 23 V-BOARD SCHEMATIC DIAGRAM ... 24 CONDUCTOR VIEWS ... 25
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Safety Precautions
General Guide Lines
1. 2. 3. 4. When servicing, observ |