LG KE/KL-20/21P32X Service Manual
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LG KE/KL-20/21P32X Service Manual

LG KE/KL-20/21P32X Service Manual

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TVCR
SERVICE MANUAL
CHASSIS : MV-031A
MODEL : KE/KL-20/21P32X
MODEL :
KF-20/21P32
MODEL
SECTION 3
CONTENT
PURITY & CONVERGENCE ADJUSTMENT ........3-2
ADJUSTMENT INSTRUCTIONS .................3-5
BLOCK DIAGRAM .............................................3-9
WIRING DIAGRAM ........................................ 3-10
TROUBLESHOOTING CHARTS .................3-11
PRINTED CIRCUIT BOARDS .......................3-16
COMPONENT LOCATION GUIDE .............3-17
ELECTRICAL PART

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Summary of Contents for LG KE/KL-20/21P32X

  • Page 1 TVCR SERVICE MANUAL CONTENT PURITY & CONVERGENCE ADJUSTMENT ..3-2 ADJUSTMENT INSTRUCTIONS ....3-5 BLOCK DIAGRAM ..........3-9 WIRING DIAGRAM ........3-10 TROUBLESHOOTING CHARTS ....3-11 PRINTED CIRCUIT BOARDS .......3-16 COMPONENT LOCATION GUIDE .....3-17 CHASSIS : MV-031A MODEL : KE/KL-20/21P32X MODEL : KF-20/21P32 MODEL...

  • Page 2: Adjustment Instructions

    FIGURE 2> P2/P3 ADJUSTMENT WAVEFORM It refers the standard color signal to LG standard signal. 3.2.1. NECESSARY INSTRUMENT If LG standard signal is a criterion,PAL standard signal is PAL- B/G 05 CH and SECAM standard signal is SECAM 04CH or 1. CTL TAPE 40CH.

  • Page 3: Focus Adjustment

    adjust CTL waveform to the following procedures. 3.3.4. P2/P3(RF LINEARITY) CHECK & ADJUSTMENT A. If is over 2.5 :1, lower the head height. 1. Adjust p2 & p3 so that the the RF envelope waveform of the After turning the height adjust screw counter-clockwise to oscilloscope becomes C in figure 2.

  • Page 4: Purity And Convergence Adjustment

    4.3. PURITY AND CONVERGENCE ADJUSTMENT 4.5 WHITE BALANCE : Warm up the TV set at least 15 minutes before adjustment. 4.5.1 NECESSARY INSTRUMENT 4.3.1. PURITY ADJUSTMENT : WHITE BALANCE METER 4.5.2 ADJUST PREPARATION 1. After degaussing the CPT with using the degaussing coil, set the picture at Standard ON.
  • Page 5 4.7. CDL DATA ADJUSTMENT 1. Input PAL DIGITAL PATTERN(EU05CH). 2. Press SVC key on the service remote controller and select LINE SERVICE 1 mode. Adjustable item is selected by CH+/- key,variable item is selected by VOL +/- key 3. Initial Establishment Data Status Ccntents 21”...

  • Page 6: Block Diagram

    BLOCK DIAGRAM...

  • Page 7: Troubleshooting

    TROUBLE SHOOTING NO POWER : NO STAND-BY Check if the Replace the Fuse Fuse is O.K.? Is there voltage at Check/Replace pin 9 of T801? DB801, R801, C806. Check/Replace Is there about 6.1V D806, Q801, R807, ZD801, C814, at pin 9 of IC801? IC801.
  • Page 8 NO POWER : NO MONITOR ON Check the Go to NO POWER (NO ST-BY) NO POWER(NO ST-BY) BLOCK BLOCK Is there about Check the pin 10 of P804 ; "HIGH" 6V at pin 9 of P804? ¡ Check/Replace D851, L851, Is there about 115V C860, IC851.
  • Page 9 NO RASTER Is there about 115V Go to NO POWER BLOCK at pin 3 of T701? ¡ Check/Replace F852, D850, Is there about 8V R858, IC853, C863. at pin 6 of P805? ¡ Check the 8V LINE of VCD BOARD ¡...
  • Page 10 V. Deflection ERROR Does the V-A, V-B Check the vertical part of VCD signal appear at pin 4, 7 of P805? Is there about Check/Replace FR702, D703, C703. 14V at pin 6 of IC701? Is there about Check;/Replace FR701, D702, C704. -14V at pin 1 of IC701? Check/Replace IC701 NO PICTURE...
  • Page 11 NO SOUND Is there about Check/Replace FR854, D855, IC601. 25V at pin 5 of IC601? Does the sound Check the Audio source line of signal appear at pin 9 of P805? ¡ Check the voltage at collector of Does the sound signal appear at pin 4 Q602.
  • Page 12 P/No : 3854VA0110A-S(1/2) 2003.03.14...
  • Page 13 P/No : 3854VA0110A-S(2/2) 2003.03.14...

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Kf-20/21p32

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