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Summary of Contents for Tauras TV4KF-NICAM/A2/TXT
- Page 1 TV4KF NICAM/A2/TXT SERVICE MANUAL COLOUR TETELEVISION...
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Page 2: X-Ray Radiation Precaution
SECIFICATION l SYSTEM PAL/SECAM,B/G,I,NICAM/A2 l POWER INPUT AC 170-245V(50/60Hz) l POWER CONSUMPTION l AERIAL IMPEDANCE 75OHM UNVALANCED l TUNER VOLTAGE SYNTHESIZER TUNING l RECEIVING CHANNELS VHF-L E2-S6 VHF-H S7-S41 UHF E21-E69 l PROGRAMME MAX.99 PROGRAM MEMORIES l PICTURE TUBE 25”,28”,110 l SOUND OUTPUT 3.0W X2 l SPEAKER... -
Page 3: High Voltage Check
servicing this chassis. 1. Since the power supply circuit of this receiver is directly connected to the AC power line. An isolation transformer should be used during any dynamic service to avoid possible shock hazard. 2. Always discharge the picture tube anode to the CRT conductive coating before handling the picture tube. - Page 4 directly relates to the high voltage. The high voltage does not exceed 29KV under any conditions. Connect an accurate high voltage meter to the second anode cap of the picture tube. Turn on the receiver, set brightness and contrast to minimum (Zero beam current). Make sure the high voltage does not exceed 29KV.
- Page 5 m) VCO Fine L1( 0 ... 127 ) The VCO status bar at the bottom of the screen appears only if either VCO Coarse item or VCO Fine item is selected. The VCO status is read from the Read register of STV2248 and guides whether to Increase / Decrease the VCO registers to attain VCO OK Status.
- Page 6 The items within the design mode (Design Parameters) can be accessed using UP / DOWN keys and the selected item can be varied using LEFT / RIGHT keys. The parameters controlled in this mode are as follows: a) AGC Gain ( 0 ... 3 ) b) OPTIONS: OPTION1: B5=p/n/s crystals application (0=2 crystals, 1=1 crystals)
- Page 7 service command: 1) “PP”----exit 2) “OK”---- switch between the service menu 3) “AV”---- auto VCO adjust 4) “MUTE” ---- one line gain 5) “ANALOG” ---- sub brightness adjust * The “AV2” should not be set while the “RGB” is set on.
- Page 8 - / -- ¢ ñ ¢ ò /...
- Page 9 CTV2811N-JL TXT/NICAM SCHEMATIC DIAGRAM NOTE: SUBJECT TO CHANGE WITHOUT NOTICE CRITICAL PARTS SCART1 SCART2 R810A +26V 1R/2W VIN2 D3401 R507 RQ07 R421 R422 R423 R424 R501 IC501 LIN1 LQ03 4148 RQ08 2.7K 5.6K R429 5.6K 2.7K C3417 10UH C432 C433 1000UF/35V C3418 RIN1...
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