LG L1717SBN Service Manual - Page 15

No Raster Osd Is Not Displayed - Lips

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2. NO RASTER (OSD IS NOT DISPLAYED) - LIPS NO RASTER (OSD IS NOT DISPLAYED) J705 NO PIN5, PIN6 5V? YES J705 PIN9 NO 2.5V? YES J705 PIN10 NO 5V? YES CHECK PULSE AS CONTACTING SCOPE PROBE TO CAUTION LABEL. NO (CONTACT PROBE TO CAUTION LABEL. CAN YOU SEE PULSE AT YOUR SCOPE? YES 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 - 15 -

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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?