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Tauras TV4K-NICAM/A2/TXT Service Manual

Colour television receiver
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TV4K-NICAM/A2/TXT
SERVICE MANUAL
SPECIFICATION
! SYSTEM
! POWER INPUT
! POWER CONSUMPTION
! AERIAL IMPEDANCE
! TUNER
TUNING
! RECEIVING CHANNELS
! PROGRAMME
MEMORIES
! PICTURE TUBE
! SOUND OUTPUT
! SPEAKER
! AV JACKS
COLOUR TELEVISION RECEIVER
PAL/SECAM,B/G,I,NICAM/A2
AC 170-245V(50/60Hz)
85W
75OHM UNBALANCED
VOLTAGE SYNTHESIZER
VHF-L E2-S6
VHF-H S7-S41
UHF E21-E69
MAX.99 PROGRAM
25",28",110°
3.0W X2
8W 8 OHM X2
FULL SCART ×2

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Summary of Contents for Tauras TV4K-NICAM/A2/TXT

  • Page 1 TV4K-NICAM/A2/TXT COLOUR TELEVISION RECEIVER SERVICE MANUAL SPECIFICATION ! SYSTEM PAL/SECAM,B/G,I,NICAM/A2 ! POWER INPUT AC 170-245V(50/60Hz) ! POWER CONSUMPTION ! AERIAL IMPEDANCE 75OHM UNBALANCED ! TUNER VOLTAGE SYNTHESIZER TUNING ! RECEIVING CHANNELS VHF-L E2-S6 VHF-H S7-S41 UHF E21-E69 ! PROGRAMME MAX.99 PROGRAM...

  • Page 2: X-Ray Radiation Precaution

    CAUTION: Before servicing the chassis, read the “Safely Precaution”. “X -Ray radiation Precaution” and “Product Safety Notice” in this manual. X-RAY RADIATION PRECAUTION 1. Excessive high voltage can produce potentially hazardous X-RAY RADIATION. To Avoid such hazards the high voltage must be specified limit. The normal value of the high voltage of this receiver is 26.5KV +/-2KV under 230V AC power source.

  • Page 3: Product Safety Notice

    the chassis parts list. 8. The receiver is designed to operate with 230V(50Hz) AC mains. PRODUCT SAFETY NOTICE Many electrical and mechanical parts in this chassis have special safety-related characteristics are often passed unnoticed by a visual inspection and the X-RAY RADIATON protection afforded by them cannot necessarily be obtained by using replacement components rated for higher voltage.
  • Page 4 4. NO matter whether the luminance, contrast and chrominance controls are set to maximum or minimum, the high voltage must be kept under 29KV. FOCUSING Receive a TV test pattern signal; adjust controls for optimum picture. Adjust Focus Control for a well-defined, sharpest display in the center area of the screen.
  • 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 V POS TXT ( 01 ... 63 ) By pressing “PP” key in Service mode ,we come out of Service mode. 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 ...
  • Page 7 EPROM_M6_R_valid (7-4) EPROM_M6_R_valid | ROMLESS_H5_P_valid | ROM_H5_P_valid EPROM_M6_A_valid (3-0) /* note: ROMLESS_M6_R_valid == ROM_M6_R_valid*/ b1,b2 0: ENGLISH, FRENCH, SWEDISH, TURKISH, GERMAN, PORTUGUESE, ITALIAN, RUMANIAN 1: POLISH, FRENCH, ESTONIAN, CZECH, GERMAN, SERBIAN, LETTISH, RUMANIAN 2: ENGLISH, FRENCH, SWEDISH, CZECH, GERMAN, PORTUGUESE, LETTISH, RUMANIAN 3: ENGLISH, FRENCH, SWEDISH, TURKISH, GERMAN, PORTUGUESE, LETTISH,...
  • Page 8 - / -- ¢ ñ ¢ ò /...

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