Magnum CTV-2120 TXT Service Manual

Manual is about: TV SET

Summary of CTV-2120 TXT

  • Page 1

    Model: service manual ctv-2120 txt tv set.

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    2 safety instructions warning: before servicing this chassis, read the "x-ray radiation precaution", "safety precaution" and "product safety notice" described below. X-ray radiation precaution 1. Extremely high voltage of the picture tube may result in producing potentially hazardous x-ray radiation...

  • Page 3

    3 sda scl sda s c l sda scl in this tv unit, ic801 is the main chip while ic802, ic201 and other chips are regarded as sub-chips. 2.1 ic801 (cpu) controls the functions of ic201 via the i 2 c bus between them. 2.2 the data of channel positions, bt voltage, band, aft, clear, volume, power on/off, tim...

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    4 remote handset operation top view of remote control how to operate remote control there are 27 buttons on the remote control. It operates with infra-red beam which is not affected by noise or other interferences. Make sure strong light never strikes on the infra-red receiver; otherwise, it would o...

  • Page 5

    5 method of removing back cabinet (see fig. 2) attn.: before disassembling the back cabinet, first draw the power cord plug of the receiver from ac outlet. 1. Disconnect the antenna cable from the antenna terminal. 2. Loosen the 5 pieces of screw (a) used in fixing the antenna jack plate on the back...

  • Page 6

    6 the ac power line voltage should be accurately kept during alignment. During the process of alignment, the ac voltage should be kept in the range from 215v to 225v (50hz). Do not attempt to connect or disconnect any wire while the receiver is in operation. Make sure the power cord is unplugged bef...

  • Page 7

    7 (2) never short-circuit the "hot" and "cold" circuit to prevent the fuse or other components from burning. (3) never connect any measuring equipment such as oscilloscope to both the "hot" and "cold" circuit at the same time to prevent the fuse from burning. Also, connect the ground of the measurin...

  • Page 8

    8 0 incorrect waveform 0 correct waveform (fig. 5) (fig. 6) agc delay adjustment: (1) tune the strongest station in your area. (2) access service mode, then selects rf agc item adiustment setting is about = 24 in the range (00 to 3f). (3) the snow just disappears from the screen. White balance adjus...

  • Page 9

    9 vertical adjustment apply a crosshatch signal. Adjust (v-s correction) to obtain a s-correction picture. Adjust (v-linearity 50/60) to obtain a linear picture. Adjust (v-position 50/60) to move the picture at the center. Adjust (v-size 50/60) to obtain rightful high picture. Attn.: these settings ...

  • Page 10

    10 a. Loosen the clamping screw of the deflection yoke to allow the yoke to tilt. B. Put a wedge as shown in fig.8 temporarily. (do not remove the cover paper on the adhesive part of the wedge). C. Tilt front of the deflection yoke up or down to obtain better convergence in circumference. (see fig.1...

  • Page 11

    11 deflection yoke puriiy and convergence magnet ass y rubber wedges 33 mm (1-5/16 ) temporary mounting rubber wedges location rubber wedge adhesive 4-pole magnets purity magnets 6-pole magnets adjust the angle (vertical lines) fixed converge magnet assembly figure 9 adjustment of magnets rotate two...

  • Page 12

    12 how to access the service mode 1. First press the volume "-" button in the tv set until the volume turn to zero. 2. Keep pressing this button, then press the "status" button on the remote contol,then you can access the service mode. Use the [menu], [ch up], [ch down], [vol up] or [vol down] butto...

  • Page 13

    13 n press [channel up or down] to select the highlighted item, then [vol down],or [vol up] to increase or decrease the setting, the data is written to eeprom. N tb1238an adjustment items logo -----: selects logo adjustment setting is thirteen characters. Rgb contrast: selects rgb contrast adjustmen...

  • Page 14

    14 option byte 0 the following options are available in option byte 0: bit 7 bit 6 bit 5 bit 4 bit3 bit 2 bit1 bit 0 ntsc comb sw (n-com) h-out stop (h-stp) forced id on (fid) abl gain id sensitivity switching(id sw) abl start point 0 = on 1 = off 0 = normal 1 = h-out stop & low rgb output 0 = norma...

  • Page 15

    15 option byte 3 the following options are available in option byte 3: bit 7 bit 6 bit 5 bit 4 bit3 bit 2 bit1 bit 0 1238 setting wps (white peak suppressor) blanking sw (blk) cw sw market france set s-video in mute logic surround process 0: off 1: on 0: on 1: off 0:blk on 1:blk off 0:auto 1:4.43mhz...

  • Page 16

    16 option byte 0 adjustment setting are 3chex. Specifications: model refer to the back plate of the tv unit power rating refer to the back plate of the tv unit power consumption (at 220v 50hz) refer to the back plate of the tv unit crt 14” (370mm) 90 ° deflection angle 21” (540mm) 90 ° deflection an...

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    Page no. 1 magnum ctv-2120 txt time: 15:51:19 09/05/2005 (yhl) bill of material listing (bm41) model number: ce-5429 21" ctv (front cabinet :01-02046xxx-xx) parent code: vs-5429tst-05 last update ecn : dec-18378 level part number d e s c r i p t i o n ls ecn c/o qty uom r e m a r k s ----- ---------...

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    Page no. 2 magnum ctv-2120 txt time: 15:51:19 09/05/2005 (yhl) bill of material listing (bm41) model number: ce-5429 21" ctv (front cabinet :01-02046xxx-xx) parent code: vs-5429tst-05 last update ecn : dec-18378 level part number d e s c r i p t i o n ls ecn c/o qty uom r e m a r k s ----- ---------...

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    Page no. 3 magnum ctv-2120 txt time: 15:51:19 09/05/2005 (yhl) bill of material listing (bm41) model number: ce-5429 21" ctv (front cabinet :01-02046xxx-xx) parent code: vs-5429tst-05 last update ecn : dec-18378 level part number d e s c r i p t i o n ls ecn c/o qty uom r e m a r k s ----- ---------...

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    Page no. 4 magnum ctv-2120 txt time: 15:51:19 09/05/2005 (yhl) bill of material listing (bm41) model number: ce-5429 21" ctv (front cabinet :01-02046xxx-xx) parent code: vs-5429tst-05 last update ecn : dec-18378 level part number d e s c r i p t i o n ls ecn c/o qty uom r e m a r k s ----- ---------...

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    Page no. 5 magnum ctv-2120 txt time: 15:51:19 09/05/2005 (yhl) bill of material listing (bm41) model number: ce-5429 21" ctv (front cabinet :01-02046xxx-xx) parent code: vs-5429tst-05 last update ecn : dec-18378 level part number d e s c r i p t i o n ls ecn c/o qty uom r e m a r k s ----- ---------...

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    Page no. 6 magnum ctv-2120 txt time: 15:51:19 09/05/2005 (yhl) bill of material listing (bm41) model number: ce-5429 21" ctv (front cabinet :01-02046xxx-xx) parent code: vs-5429tst-05 last update ecn : dec-18378 level part number d e s c r i p t i o n ls ecn c/o qty uom r e m a r k s ----- ---------...

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    Page no. 7 magnum ctv-2120 txt time: 15:51:19 09/05/2005 (yhl) bill of material listing (bm41) model number: ce-5429 21" ctv (front cabinet :01-02046xxx-xx) parent code: vs-5429tst-05 last update ecn : dec-18378 level part number d e s c r i p t i o n ls ecn c/o qty uom r e m a r k s ----- ---------...

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    Page no. 8 magnum ctv-2120 txt time: 15:51:19 09/05/2005 (yhl) bill of material listing (bm41) model number: ce-5429 21" ctv (front cabinet :01-02046xxx-xx) parent code: vs-5429tst-05 last update ecn : dec-18378 level part number d e s c r i p t i o n ls ecn c/o qty uom r e m a r k s ----- ---------...

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    Page no. 9 magnum ctv-2120 txt time: 15:51:19 09/05/2005 (yhl) bill of material listing (bm41) model number: ce-5429 21" ctv (front cabinet :01-02046xxx-xx) parent code: vs-5429tst-05 last update ecn : dec-18378 level part number d e s c r i p t i o n ls ecn c/o qty uom r e m a r k s ----- ---------...

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    Page no. 10 magnum ctv-2120 txt time: 15:51:19 09/05/2005 (yhl) bill of material listing (bm41) model number: ce-5429 21" ctv (front cabinet :01-02046xxx-xx) parent code: vs-5429tst-05 last update ecn : dec-18378 level part number d e s c r i p t i o n ls ecn c/o qty uom r e m a r k s ----- --------...

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    Page no. 11 magnum ctv-2120 txt time: 15:51:19 09/05/2005 (yhl) bill of material listing (bm41) model number: ce-5429 21" ctv (front cabinet :01-02046xxx-xx) parent code: vs-5429tst-05 last update ecn : dec-18378 level part number d e s c r i p t i o n ls ecn c/o qty uom r e m a r k s ----- --------...

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    Page no. 12 magnum ctv-2120 txt time: 15:51:19 09/05/2005 (yhl) bill of material listing (bm41) model number: ce-5429 21" ctv (front cabinet :01-02046xxx-xx) parent code: vs-5429tst-05 last update ecn : dec-18378 level part number d e s c r i p t i o n ls ecn c/o qty uom r e m a r k s ----- --------...

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    Page no. 15 c a s i l e l e c t r o n i c p r o d u c t s l i m i t e d time: 15:51:19 09/05/2005 (yhl) bill of material listing (bm41) model number: ce-5429 21" ctv (front cabinet :01-02046xxx-xx) parent code: vs-5429tst-05 last update ecn : dec-18378 level part number d e s c r i p t i o n ls ecn ...

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    Page no. 20 c a s i l e l e c t r o n i c p r o d u c t s l i m i t e d time: 15:51:19 09/05/2005 (yhl) bill of material listing (bm41) model number: ce-5429 21" ctv (front cabinet :01-02046xxx-xx) parent code: vs-5429tst-05 last update ecn : dec-18378 level part number d e s c r i p t i o n ls ecn ...

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    Page no. 21 c a s i l e l e c t r o n i c p r o d u c t s l i m i t e d time: 15:51:19 09/05/2005 (yhl) bill of material listing (bm41) model number: ce-5429 21" ctv (front cabinet :01-02046xxx-xx) parent code: vs-5429tst-05 last update ecn : dec-18378 level part number d e s c r i p t i o n ls ecn ...

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    Page no. 22 c a s i l e l e c t r o n i c p r o d u c t s l i m i t e d time: 15:51:19 09/05/2005 (yhl) bill of material listing (bm41) model number: ce-5429 21" ctv (front cabinet :01-02046xxx-xx) parent code: vs-5429tst-05 last update ecn : dec-18378 level part number d e s c r i p t i o n ls ecn ...

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    Page no. 23 c a s i l e l e c t r o n i c p r o d u c t s l i m i t e d time: 15:51:19 09/05/2005 (yhl) bill of material listing (bm41) model number: ce-5429 21" ctv (front cabinet :01-02046xxx-xx) parent code: vs-5429tst-05 last update ecn : dec-18378 level part number d e s c r i p t i o n ls ecn ...

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    Page no. 24 c a s i l e l e c t r o n i c p r o d u c t s l i m i t e d time: 15:51:19 09/05/2005 (yhl) bill of material listing (bm41) model number: ce-5429 21" ctv (front cabinet :01-02046xxx-xx) parent code: vs-5429tst-05 last update ecn : dec-18378 level part number d e s c r i p t i o n ls ecn ...