Daewoo 529B Скачать руководство пользователя страница 21 | Manualshive

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19

5. Horizontal Output Circuit

Is

B+ line voltage

normal?

Is

Q505 base

waveform

normal?

Trouble in power
supply circuit

Refer to trouble
in power supply
unit

Trouble in FBT

Trouble in Horizontal

output circuit

(No Raster)

Yes

No

Q501 and its
ambient circuit

Trouble in Q501, T501

If the holddown circuit stops the
horizontal oscillator during the check,
turn off the power then turn on again
about 10 seconds later

Yes

Yes

Yes

Check the circuit of
P. S. U

No

Trouble in IC501

Yes

Trouble in H.sync line

11V p-p

4V p-p

14.5Vp-p

Yes

Is

Q504 Gate

waveform

normal?

Is

the input H.sync

correct?

Is

IC501 pin8

H.DRV waveform

normal?

Is

IC501 pin10

voltage about

12V?

No

No

No

No

MODE

B+ Voltage

VGA 73.2V

dc

54KHz 117.4V dc

68KHz 148.9V dc

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Содержание 529B

Страница 1: ...ServiceManual XGA COLOR MONITOR Model 529B DAEWOO ELECTRONICS CO LTD OVERSEAS SERVICE DEPT...

Страница 2: ...6 GENERAL INFORMATION 7 PIN CONNECTOR 8 CAUTIONS FOR ADJUSTMENT AND REPAIR 8 OPERATION AND ADJUSTMENT 9 ALIGNMENT PROCEDURE 13 TROUBLESHOOTING HINTS 15 BLOCK DIAGRAM 29 PCB LAYOUT 30 SCHEMATIC DIAGRA...

Страница 3: ...hat these critical parts be replaced with manufacturer s specified parts to prevent X ray shock fire or other hazards Do not modify the original design without getting a written permission from DAEWOO...

Страница 4: ...ld result in damage to the equipment or other property WARNING Statements identify conditions or practices that could result in personal injury or loss of life Terms as marked on equipment CAUTION Sta...

Страница 5: ...with a pipe cleaner cotton tipped stick or comparable nonabrasive applicator 10 by volume Aceton and 90 by volume isopropyl alchohol 90 99 strength 6 Do not defeat any plug socket B voltage interlock...

Страница 6: ...electrically shorted together by conductive foam aluminum foil or comparable conductive material 7 Immediately before removing the protective material from the leads of a replacement ES device touch t...

Страница 7: ...an anti static suction type solder removal device or with desoldering braid before removing the IC Replacement 1 Carefully insert the replacement IC in the circuit board 2 Carefully bend each IC lead...

Страница 8: ...rcuit board 4 Securely crimp each connection and solder it 5 Inspect the solder joints of the two original leads on the circuit board copper side If they are not shiny reheat them and apply additional...

Страница 9: ...rom 50Hz to 160Hz This color monitor supports IBM PC PC XT PC AT personal System 2 PS 2 Apple Macintosh and compatible users crisp text and vivid color graphics display when using the following graphi...

Страница 10: ...ustment procedure described in the service manual is made by a visual check Allow 20 minutes warm up time for the display before checking or adjusting only electrical specification or function Reform...

Страница 11: ...d function Move cursor to the left window on the OSD window Decrease the value of any selected function Launch OSD On Screen Display MENU window Move cursor to the high window on the OSD window Increa...

Страница 12: ...10 Key Process When you choose the icon on the OSD window you can exit the OSD screen Hot Key BRIGHTNESS CONTRAST MENU Start...

Страница 13: ...om sides of the screen are bowed PIN CORNER BOTTOM Adjust the position of the display horizontally left or right and vertically up or down H CENTER V CENTER Adjust the width horizontal size and the he...

Страница 14: ...12 Select language for OSD 5 languages LANGUAGE ICON CONTROL FUNCTIONS Reset the screen to the Factory Preset Display Settings RECALL...

Страница 15: ...ctory preset mode H size V size H phase V position Pincushion Trapezoid Parallelogram Pin balance Pin corner are adjusted at each mode In Factory Auto Alignment was done at each mode Therefore Factory...

Страница 16: ...hatch pattern on display b Adjust the focus from the best over all focus on the display Also adjust the brightness to the desired condition c Vertical red and blue lines are converged by varying the a...

Страница 17: ...their ambient circuit Trouble in 8Vdc line of the Main PWB Check the clamping pulse circuit Check the signal cable No Character Is whole screen bright Yes Yes Yes Yes Yes No No No No No Yes Yes Rk Gk...

Страница 18: ...pply unit Is CRT heater red hot No Yes No No No No Yes No Yes Yes Yes Yes No Is Heater Voltage CRT PWB about 6V Increase the Brightness Contrast control level fully Maximum No Raster Is whole screen b...

Страница 19: ...G2 voltage normal Is the output of pre amp IC801 pin 14 16 19 all normal Check video signal cable or video card Trouble in IC801 or its ambient circuit Trouble in video output circuit Q803 Q804 Q833 Q...

Страница 20: ...D Font Is the output of IC204 PIN 13 14 15 normal Refer to Missing Color No Yes Yes Yes If menu key selected Trouble in IC801 and its ambient circuit No No Yes Is the Fast Blanking signal IC204 pin12...

Страница 21: ...in Q501 T501 If the holddown circuit stops the horizontal oscillator during the check turn off the power then turn on again about 10 seconds later Yes Yes Yes Check the circuit of P S U No Trouble in...

Страница 22: ...of the IC501 correct Trouble in IC501 or its ambient circuit Is the pulse of pin 33 of the IC201 correct Check IC201 and its ambient circuit No No No Yes Yes Is the input H Sync correct Check IC201 an...

Страница 23: ...voltage correct Refer to P S U Is the pulse of pin 4 6 of the IC401 correct Trouble in vertical D Y No No No Yes Yes Is the output of pin 12 13 of IC501 all normal Check IC401 and its ambient circuit...

Страница 24: ...22 7 Focus Monitor remains unfocused Check Focus VR in FBT Is focus acceptable Trouble in Focus circuit FBT Yes OK No...

Страница 25: ...onvergence Is convergence on the center area bad Is convergence on the fringe area bad Adjust static convergence Refer to Adjustment procedure for convergence Yes Adjust D Y Location Yes No Poor conve...

Страница 26: ...Circuit Is the DC level of the base of Q517 changeable No Yes Is the DC level of pin 11 with the IC501 changeable Yes No Check the Q515 Q516 and its ambient circuit Is the collector pulse of Q505 corr...

Страница 27: ...DC voltage with IC501 pin 12 13 changeable Check the IC501 and its ambient circuit No Trouble in Vertical Output Circuit Refer to Vertical Output circuit Yes Abnormal V Size Is the DC voltage with IC...

Страница 28: ...Q515 Q517 and its ambient circuit Yes Side Pincusion distortion is excessive or barrel O K Select the side pincushion icon in OSD menu and adjust to acceptable position Yes Is the waveform of IC501 p...

Страница 29: ...T001 or IC001 and its ambient circuit Trouble in bridge diode D001 or peripheral device No Is the waveform T001 pin 5 correct Trouble in T001 or D101 No Trouble in P S U Is the power switch on Switch...

Страница 30: ...tage of IC102 pin 3 set at 5Vdc Trouble in IC102 D103 No Is voltage of C108 set at 22Vdc No Yes Yes Yes Is voltage of IC103 pin 3 set at 12Vdc Trouble in D106 Q103 or IC103 P S U O K Trouble in D104 T...

Страница 31: ...GHTNESS CONTRAST MUTE SDA 1 SIGNAL IN VIDEO PRE AMP KA2143B VIDEO OUT BIAS BFQ225 PH2369 BFQ221 BFQ241 CDT MCU NT6862 D COIL POWER IN FILTER CIRCUIT EEPROM 24LC08 OSD GEN DWOSD07 H V OSC G D CHOPPER C...

Страница 32: ...30 PCB LAYOUT Main PCB Component Side...

Страница 33: ...31 Main PCB Solder Side...

Страница 34: ...32 CRT PCB Component Side CRT PCB Solder Side...

Страница 35: ...33 SCHEMATIC DIAGRAM Power Connection section...

Страница 36: ...34 Control Vertical Out section...

Страница 37: ...35 Horizontal section...

Страница 38: ...36 Video section...

Страница 39: ...37 EXPLODED VIEW MECHANICAL PARTS LIST...

Страница 40: ...pF D 0 5 F 1pF J 5 K 10 P 100 0 Z 80 Fig Part No Description Index R101 Resistors RE 42820J Carbon 82J R102 RD 4Z201J Carbon1 4W 200J Allowance F 1 J 5 K 10 M 20 G 2 38 INFORMATION OF PART DESCRIPTION...

Страница 41: ...AIN T 1 6 246 310 0001 9979800514 PCBCRT CMC 529BT 1 6 136 105 B001 5PB13890 COILBEAD BI3890 B002 5PB13890 COILBEAD BI3890 B003 5PB13857 COILBEAD BI3857 AXIAL B004 5PB13857 COILBEAD BI3857 AXIAL B005...

Страница 42: ...CMYLAR 1 6KVBUP1200PFJ TP C534 CMXM2D104J CMYLAR 200V0 1MFJ C535 CCXB2H102K CCERA 500VB1000PFK TAPPING C536 CCXF1H104Z CCERA 50VF0 1MFZ C537 CCXB2H102K CCERA 500VB1000PFK TAPPING C538 CCXF1H104Z CCERA...

Страница 43: ...15Y AUTO Q592 TZTA1266Y TR KTA1266Y AUTO 1015Y Q701 TZTC3198Y TR KTC3198Y 1815Y AUTO Q702 TZTC3202Y TR KTC3202Y AUTO 1959Y D563 D1N4004 DIODE 1N4004 D565 DZN4148 DIODE 1N4148AUTO52MM D566 DZN4148 DIOD...

Страница 44: ...2KOHMJ R502 HRFT123JCA RCHIP 1 1012KOHMJ2012 R503 RD AZ683J RCARBONFILM 1 668KOHMJ R504 RD 4Z303J RCARBONFILM 1 430KOHMJ R505 RD 4Z244J RCARBONFILM 1 4240KOHMJ Q703 TZTA1270Y TR KTA1270Y AUTO 562Y Q8...

Страница 45: ...ARBONFILM 1 61MOHMJ R848 HRFT104JCA RCHIP 1 10100KOHMJ2012 R506 RD AZ471J RCARBONFILM 1 6470OHMJ R507 HRFT122JCA RCHIP 1 101 2KOHMJ2012 R508 HRFT472JCA RCHIP 1 104 7KOHMJ2012 R509 RD 2Z479J RCARBONFIL...

Страница 46: ...TP8D13 X201 5PEF0EC8T4 RESONATOR EFOEC8004T4 R849 HRFT473JCA RCHIP 1 1047KOHMJ2012 R850 HRFT273JCA RCHIP 1 1027KOHMJ2012 R851 HRFT622JCA RCHIP 1 106 2KOHMJ2012 R852 HRFT101JCA RCHIP 1 10100OHMJ2012 R8...

Страница 47: ...VERSEAS SERVICE DEPT DAEWOO ELECTRONICS CO LTD 686 AHYEON DONG MAPOGU SEOUL KOREA C P O BOX 8003 SEOUL KOREA TELEX DWELEC K28177 8 CABLE DAEWOOELEC FAX 02 590 6291 TEL 02 360 7114 590 6151 5 http www...

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