LG L1917S-BNN Скачать руководство пользователя страница 18 | Manualshive

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LG L1917S-BNN Скачать руководство пользователя страница 18

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2. NO RASTER (OSD IS NOT DISPLAYED) – LIPS

NO RASTER

(OSD IS NOT DISPLAYED)

NO

NO

NO

NO

REPLACE CCFL LAMP

IN THE LCD MODULE

CHECK POWER BOARD, AND
FIND OUT A SHORT POINT

AS OPENING
EACH POWER LINE

CHECK MICOM INV ON/OFF
PORT.

1. CONFIRM BRIGHTNESS

OSD CONTRL STATE.

2. CHECK MICOM DIM-ADJ

PORT

LIPS

YES

YES

YES

YES

J705

PIN5, PIN6

5V?

J705 PIN9

2.5V?

J705 PIN10

5V?

CHECK

PULSE AS

CONTACTING SCOPE

PROBE TO CAUTION LABEL.

(CONTACT PROBE TO

CAUTION LABEL.

CAN YOU SEE PULSE

AT YOUR

SCOPE?

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Содержание L1917S-BNN

Страница 1: ... pages 28 Including blank 1page Part No 1 2 Service Guide Specification Service Guide Specification Changes 4 REV NO MM DD YY SIGNATURE CHANGE NO CHANGE CONTENTS 1 2 3 4 5 7 6 SUFFIX LEE H J 05 11 16 L1917S SNN L1917S BNN LG 38289S0033J KIM J O 05 11 16 1 Origin Notification LGEDI Printed in Indonesia LGEWA Printed in U K LGESP Printed in Brazil LGEMX Printed in Mexico LGENT Printed in China LGEIL...

Страница 2: ...et Pagination sheet P NO 38289S0033J Total pages 28page Cover English 2 English 3 English 4 English English Rear Cover Front cover Inside blank English English 22 English 23 English 24 English 25 Rear cover Inside 26 ...

Страница 3: ... http biz LGservice com E mail http www LGEservice com techsup html CAUTION BEFORE SERVICING THE UNIT READ THE SAFETY PRECAUTIONS IN THIS MANUAL CHASSIS NO CL 82 MODEL L1917S L1917S SNN AR EP L1917S L1917S BNN AR EP Same model for Service ...

Страница 4: ...Blank Page1 ...

Страница 5: ...SIGNAL Refer to the Timing Chart 3 1 Sync Signal Type Separate Sync Composite Sync SOG 3 2 Video Input Signal 1 Type R G B Analog 2 Voltage Level 0 0 7V a Color 0 0 0 Vp p b Color 7 0 0 467 Vp p c Color 15 0 0 714 Vp p 3 Input Impedance 75 Ω 3 3 Operating Frequency Horizontal 30 83kHz Vertical 56 75Hz 4 MAX RESOLUTION Analog 1280 x 1024 75Hz 5 POWER SUPPLY 5 1 Power 100 240V 50 60Hz 1 0A 5 2 Power...

Страница 6: ... Protect the module from the ESD as it may damage the electronic circuit C MOS Make certain that treatment person s body are grounded through wrist band Do not leave the module in high temperature and in areas of high humidity for a long time The module not be exposed to the direct sunlight Avoid contact with water as it may a short circuit within the module If the surface of panel become dirty pl...

Страница 7: ...d to the receiver chassis ground before connecting the test receiver positive lead Always remove the test receiver ground lead last 9 Use with this receiver only the test fixtures specified in this service manual CAUTION Do not connect the test fixture ground strap to any heat sink in this receiver Electrostatically Sensitive ES Devices Some semiconductor solid state devices can be damaged easily ...

Страница 8: ...tip as the solder melts 2 Draw away the melted solder with an anti static suction type solder removal device or with solder braid before removing the IC Replacement 1 Carefully insert the replacement IC in the circuit board 2 Carefully bend each IC lead against the circuit foil pad and solder it 3 Clean the soldered areas with a small wire bristle brush It is not necessary to reapply acrylic coati...

Страница 9: ...onnection 4 Route the jumper wire along the path of the out away copper pattern and let it overlap the previously scraped end of the good copper pattern Solder the overlapped area and clip off any excess jumper wire At Other Connections Use the following technique to repair the defective copper pattern at connections other than IC Pins This technique involves the installation of a jumper wire on t...

Страница 10: ...8 600 1 4 23 6 H Pixels 49 5 46 875 1056 800 16 80 160 800 x 600 V Lines 75 0 625 600 1 3 21 7 H Pixels 57 283 49 725 1152 832 32 64 224 832 x 624 V Lines 74 55 667 624 1 3 39 8 H Pixels 65 0 48 363 1344 1024 24 136 160 1024 x 768 V Lines 60 0 806 768 3 6 29 9 H Pixels 78 75 60 123 1312 1024 16 96 176 1024 x 768 V Lines 75 029 800 768 1 3 28 10 H Pixels 100 0 68 681 1456 1152 32 128 144 1152 x 870...

Страница 11: ...DISASSEMBLY 8 Remove the screws 1 1 Pull the front cover upward 2 Then let the all latches are separated 2 5 3 Put the front face down Disassemble back cover 2 3 4 5 6 ...

Страница 12: ...ncluding ADC LVDS SCALER INPUT SWITCHING TMDS MTV312 MICOM LCD Module R G B differential LIPS 5V 5V AC I nput TSU16AL TR KTA 1273 12V R G B H V Sync 1 8V 3 3V 1 8V 3 3V1 3 3V Reg 78D33 5V 3 3V LVDS Low Voltage Differential Signaling ...

Страница 13: ...alog to digital interpolates input to 1280 X 1024 resolution signal and outputs 8 bit R G B signal to transmitter 2 Power Part This part consists of the 3 3V regulator to convert power which is provided 12V 5V in Power board 5V is provided for MICOM and LCD panel 5V is converted 3 3V by regulator and 3 3V is converted 1 8V by scaler KTA1273 Converted power is provided for IC in the main board 3 MI...

Страница 14: ...h a bridge rectifier and a bulk capacitor 3 Energy Transfer This part function is transfer the primary energy to secondary through a power transformer 4 Output rectifier and filter This part function is to make a pulse width modulation control and to provide the driver signal to power switch to adjust the duty cycle during different AC input and output loading condition to achive the dc output sta...

Страница 15: ... is available to LCD Monitor only 1 Port Setup a Copy UserPort sys file to c WINNT system32 drivers folder b Run Userport exe c Remove all default number d Add 300 3FF e Click Start button f Click Exit button 2 EDID Read Write 1 Run WinEDID exe 2 Edit Week of Manufacture Year of Manufacture Serial Number a Input User Info Data b Click Update button c Click Write button ...

Страница 16: ...K Allows you to set the R G B 9300K value manually f R G B 6500K Allows you to set the R G B 6500K value manually g R G B Offset Allows you to set the R G B Offset value manually Analog Only h R G B Gain Allows you to set the R G B Gain value manually Analog Only i MODULE To select applied module 220 IBM Compatible PC Video Signal Generator PARALLEL PORT Power inlet required Power LED ST Switch Po...

Страница 17: ...CK U201 NO NO NO CHECK POWER BOARD AND FIND OUT A SHORT POINT AS OPENING EACH POWER LINE CHECK 5VS LINE OPEN CHECK CHECK 3 3V LINE NO CHECK X TAL YES YES YES YES CHECK J705 VOLTAGE PIN5 PIN6 5V CHECK U501 PIN 8 Voltage 5V IS U201 PIN90 3 3V VOLTAGE CHECK U201 PIN 96 PULSE 1 NO PROBLEM 1 Waveforms U201 96 ...

Страница 18: ...ARD AND FIND OUT A SHORT POINT AS OPENING EACH POWER LINE CHECK MICOM INV ON OFF PORT 1 CONFIRM BRIGHTNESS OSD CONTRL STATE 2 CHECK MICOM DIM ADJ PORT LIPS YES YES YES YES J705 PIN5 PIN6 5V J705 PIN9 2 5V J705 PIN10 5V CHECK PULSE AS CONTACTING SCOPE PROBE TO CAUTION LABEL CONTACT PROBE TO CAUTION LABEL CAN YOU SEE PULSE AT YOUR SCOPE ...

Страница 19: ... U803 15 1 CHECK PIN122 123 SOLDERING CONDITION 2 CHECK X501 3 TROUBLE IN U201 CHECK CONNECTION LINE FROM D SUB TO U501 YES YES YES U201 PIN 18 90 3 3V U201 PIN96 97 OSCILLATE AS 12MHZ U501 PIN43 IS 48KHz H SYNC PIN44 IS 60Hz V SYNC IS PULSE APPEARED AT SIGNAL PINS AT MODE 12 1 2 1 2 Waveforms U201 96 97 U501 43 H SYNC 2 U501 44 V SYNC ...

Страница 20: ...DPM TROUBLE IN DPM NO NO TROUBLE IN U501 CHECK PC PC IS NOT GOING INTO DPM OFF MODE CHECK H V SYNC LINE YES YES CHECK R216 R217 R778 R781 CHECK U501 PIN 43 44 SYNC PULSE 3 3 Waveforms R216 R778 H Sync 3 R217 R781 V Sync ...

Страница 21: ...WIRING DIAGRAM 18 6P 30P 11P Connector Ass y P N 6631T20023A Connector Ass y P N 6631T20022G Connector Ass y P N 6631T11012W ...

Страница 22: ...EXPLODED VIEW 19 010 020 050 060 070 080 090 100 120 110 030 040 ...

Страница 23: ...6304FHS012D LCD LIQUID CRYSTAL DISPLAY HSD190ME12 A11 HANNSTAR TFT COLOR 250NITS 8MS LVDS 3809900139B BACK COVER ASSEMBLY L1917S NON BLACK CKD 3043900015E TILT SWIVEL ASSEMBLY L1917S HANSTAR CKD 49509K0186B METAL SHIELD L1917S GUIDE A CKD 3550TKK989B COVER LXX32 PIECE INSULATOR LIPS CKD 6871TPT312B PWB PCB ASSEMBLY POWER L1750 UNION POWER TOTAL BRAND 4 LAMP 17 19 SOCKET TYPE 33139L9024A MAIN TOTAL...

Страница 24: ... TP NP0 C819 0CK105CD56A 1UF 1608 10V 10 R TP X7R D701 0DSIH00018A ENKMC2837 T112 LF ISAHAYA R DATE 2005 10 24 S AL LOC NO PART NO DESCRIPTION SPECIFICATION D702 0DSIH00018A ENKMC2837 T112 LF ISAHAYA R D706 0DSIH00018A ENKMC2837 T112 LF ISAHAYA R ZD701 0DZ560009GB BZT52C5V6S F LF DIODES R T ZD702 0DZ560009GB BZT52C5V6S F LF DIODES R T ZD703 0DZ560009GB BZT52C5V6S F LF DIODES R T ZD704 0DZ560009GB ...

Страница 25: ...TP R751 0RJ4700D677 470 OHM 1 10 W 5 1608 R TP R752 0RJ1000D677 100 OHM 1 10 W 5 1608 R TP R753 0RJ1000D677 100 OHM 1 10 W 5 1608 R TP R754 0RJ1000D677 100 OHM 1 10 W 5 1608 R TP R755 0RJ1000D677 100 OHM 1 10 W 5 1608 R TP R769 0RJ0000D677 0 OHM 1 10 W 5 1608 R TP R778 0RJ0682D677 68 OHM 1 10 W 5 1608 R TP R781 0RJ0682D677 68 OHM 1 10 W 5 1608 R TP R803 0RH0000D622 0 OHM 1 10 W 2012 5 00 D R808 0R...

Страница 26: ...SCHEMATIC DIAGRAM 23 1 TSU56AL TSU16AL 1 3 1 Waveforms U201 96 97 3 R216 R778 H Sync 3 R217 R781 V Sync ...

Страница 27: ... 24 2 MICOM 2 2 U501 43 H SYNC 2 U501 44 V SYNC Waveforms ...

Страница 28: ... 25 3 POWER ...

Страница 29: ... 26 4 CONNECTOR JACKS 3 3 Waveforms R216 R778 H Sync 3 R217 R781 V Sync ...

Страница 30: ...Oct 2005 P NO 38289S0033J Printed in Korea ...

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