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Elekta CTR1498 Manual

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WIRING DIAGRAM
SCHEMATIC DIAGRAM
BLOCK DIAGRAM
ELECTRICAL PARTS LIST
EXPLODED VIEW
MECHANICAL PARTS LIST
SPECIFICATIONS
CONTENTS
2
2
3
4-8
9-10
11-13
14
15
16
17-25
25
27-28
28

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Summary of Contents for Elekta CTR1498

  • Page 1: Table Of Contents

    CONTENTS X-RAY RADIATION PRECAUTION SAFETY PRECAUTION OPERATIONCONTROLS GENERAL ADJUSTMENT INSTRUCTION COLOR PURITY AND CONVERGENCE ADJUSTMENT 9-10 COMPONENT AND BOTTOM VIEW 11-13 WIRING DIAGRAM SCHEMATIC DIAGRAM BLOCK DIAGRAM ELECTRICAL PARTS LIST 17-25 EXPLODED VIEW MECHANICAL PARTS LIST 27-28 SPECIFICATIONS...

  • Page 2: X-Ray Radiation Precaution

    CAUTION: BEFORE SERVICING THE CHASSIS, READ THE' SAFETY PRECAUTION ",'X-RAY RADIA- TION PRECAUTION " AND ' PROOUCT SAFETY NOTICE " ON PAGE 2 OF THIS MANUAL. NOTICE: THE POWER SUPPLY ClRCUIT OF THIS RECEIVER IS A " HOT " CHASSIS, THE REST ARE "...

  • Page 3: Operationcontrols

    OPERATION CONTROLS VOLUME CONTROL ( UP / DOWN ) CHANNEL SELECTOR (UP / DOWN ) SPEAKER POWER SWITCH CONTROL DOOR INFRARED REMOTE SENSOR MANUAL TUNING AUTO PRESET STAND BY PRESET ON/OFF SKIP AUDIO IN AC CORD VIDEO IN ANTENNA TERMINALS...

  • Page 4: General Adjustment Instruction

    GENERAL ADJUSTMENT INSTRUCTION This receiver is transistorized and special care should be taken when servicing. Read the following matters that demand special attention before attempting adjustment. Adjustment requires and exact procedure and should be under taken only when necessary. An isolation transformer should be used during any dynamic service to avoid possible shock hazard. The test equipment specified or its equvalent is required to perform the alignment property.
  • Page 5 Fig.4.
  • Page 6 GENERAL ADJUSTMENT 1. AUTOMATIC DEGAUSSING An automatic degaussing coil is attached around the picture tube, degaussing the tube property in about one second after the set is switched on. If the receiver is moved or faced in a different direction, the power must be switched off at least 15 minutes in order that the automatic degaussing circuit operates property.
  • Page 7 8. FOCUSING ADJUSTMENT (a) Receive a TV signal. (b) Set the contrast control to the normal position. (c) Adjust the FOCUS control ( on· T302 ) for a well-defined, sharpest display on the screen. 9. WHITE BALANCE ADJUSTMENT (a) Set TV brightness control to miniumum and switch to AV mode. Warm up the set for 15 minutes. (b) Set the R.G.B.
  • Page 8 14. PAL MATRIX ADJUSTMENT (a) Tune in a color bar signal. (b) Use oscilloscope with 2 channels input and set to the " X-Y ' mode. (c) Channel 1 ( X ) connected to TP28 ( Pin 1 of IC1401 ) ( R-Y ). (d) Channel 2 (Y) connected to TP29 (Pin 3 of IC1401) (B-Y).

  • Page 9: Color Purity And Convergence Adjustment

    D. R-Y DEMODULATION (a) Apply a SECAM color bar signal. (b) Conned an oscilloscope to TP18 ( Pin 1 of IC1401 ). (c) Adjust L211 to obtain an R-Y signal with correct chrominance output ( Fig. 8 ). 16. SUB-COLOR ADJUSTMENT (a) Receive Philips signal.
  • Page 10 4. CIRCUMFERENCE CONVERGENCE ADJUSTMENT Note: This adjustment requires Rubber Wedges and Grass Cloth Tapes. (a) Loosen the clampling screws of deflection yoke to allow the yoke to tilt. (b) Place a wedge as shown in Fig 14 temporarily.( Do not remove cover paper on adhesive pant of the wedge. ) (c) Tilt front of the deflection yoke up or down to obtain better convergence in circumference ( See Fig.