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SERVICE MANUAL
COLOR TELEVISION
• This Service Manual contains the additional information "NOTE ON BEFORE
REPAIRING", "SETTING OF IIC BUS DATA" and "ADJUSTMENT" for the model
TV-F2400/2500(U,NH,HT). If requiring the other information, see Service Manual
of TV-F2400(U),(S/M Code No. 09-007-431-9R1) and TV-F2500(NH,HT),
(S/M Code No. 09-008-431-9R2).
TV-F2400
TV-F2500
S/M Code No. 09-009-431-9S2
U
NH,HT

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   Summary of Contents for Aiwa TV-F2400

  • Page 1: Service Manual

    • This Service Manual contains the additional information "NOTE ON BEFORE REPAIRING", "SETTING OF IIC BUS DATA" and "ADJUSTMENT" for the model TV-F2400/2500(U,NH,HT). If requiring the other information, see Service Manual of TV-F2400(U),(S/M Code No. 09-007-431-9R1) and TV-F2500(NH,HT), (S/M Code No. 09-008-431-9R2).

  • Page 2

    NOTE ON BEFORE REPAIRING • Do not turn on the power without degaussing coil when repairing. • In case of removing degaussing coil when repairing, connect dummy as follows; Method 1 : Use another new degaussing coil and connect it when repairing. Method 2 : Place the 6.8 - 2.0W resistor to the degaussing coil connector and connect it as service jig.

  • Page 3

    AGING AFT OK 0000H US25 Fig.1a Aging Mode Operation Method : Make sure that confirmation is done after replacing the EEP ROM. <TV-F2400> AGING AFT OK 0000H NH25 1. Enter to the aging mode by pressing the “TEST” key on the remote Fig.1b controller.

  • Page 4

    Contents of Aging Mode : 1. Release “Auto Power Off” function Release “Auto Power Off” function when no input is supplied. Use this mode for warming up (aging) during CRT adjustment. 2. AFT S-curve status indication The condition of FT S-curves are indicated by “OK” for suitable tuning, “UP” for too high or “DN” for too low. 3.

  • Page 5

    Adjustment Mode Operation Method : 1. Return to the aging display by pressing the “SYSTEM” key and press “TEST” key to display the adjustment menu screen. PAGE 1 PAGE 2 PAGE 3 PAGE 4 PAGE 4 1 H POS 1 R CUTOFF 1 SUB CONTRAST 1 358 TRAP 1 ATT...

  • Page 6: Table Of Contents

    ADJUSTMENT Electrical adjustment: • Operate after inputting the following initial figures when replacing EEP ROM. • Check the condition and adjust the area where the general repair is carried out. Initial Value PAGE 1 H POS V POS V SIZE OSD POS PIF VCO RF AGC...

  • Page 7: Input Signal : Crosshatch

    PAGE 1 Center 1-1. H POS Horizontal Positioning Adjustment / Adjustment Menu Screen: PAGE 1-1 PAGE 1 Input Signal : Crosshatch Measuring Instrument : Pattern generator / reader: LCG-401 • Use the volume keys on the jig remote controller to adjust the dot mark in the centre of crosshatch screen to the exact centering position by allocating an equal number of squares on the left and right side of the dot.

  • Page 8

    1-4. OSD POS OSD Positioning Adjustment / Adjustment Menu Screen: PAGE 1-4 PAGE 1 Input Signal: Not specified. • Use the volume keys on the jig remote controller to adjust the position of the + sign on both right and left sides shown on the OSD screen to be equivalent from the screen edge.

  • Page 9: G Drive

    PAGE 2 White Balance Adjustment : Adjustment Menu Screen: PAGE 2-1~5 PAGE 2 *User’s picture quality will be cleared when the adjustment menu screen appears. PAGE 2 Input signal : White raster Contents of Adjustment : 1. R CUT OFF R CUTOFF 0~255 Contents of Adjustment :...

  • Page 10: Sub Contrast

    3-2. SUB CONTRAST Sub-contrast Adjustment / Adjustment Menu Screen: PAGE 3-1 Input Signal: Color Bar (QIW) croma/OFF Measuring Instrument: Oscilloscope Pattern generator / reader: Test Point: S0901 R(R CATHODE) 1. Connect the oscilloscope to S0901 R. 2. Using the volume keys on the jig remote controller adjust the pedestal level and the voltage of 100% white to 105 ±...

  • Page 11

    PAGE 5 5-1. ATT ALIGNMENT ATT Adjustment / Adjustment Menu Screen: PAGE 5-1 PAGE 5 Input Signal: ANT RF-INPUT / Color Bar Measuring Instrument: Oscilloscope / Pattern generator / reader: LCG-401 Test Point: IC701 2 PIN TV OUT-L 1. Connect the oscilloscope to IC701 2 PIN 2.

  • Page 12

    TUNER ADJUSTMENT If adjustment elements were replaced for repair, conduct the following set of adjustments. And then, further adjustments should be conducted on the Adjustment Menu Screen. If this set of adjustments was not completed, no further adjustments on the Adjustment Menu Screen can be conducted. The elements whose circuit condition will be altered depending on repair.

  • Page 13

    2–11, IKENOHATA 1–CHOME, TAITO-KU, TOKYO 110, JAPAN TEL:03 (3827) 3111 9620450 Printed in Singapore...

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Tv-f2500

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