LG Flatron L1511S Service Manual page 11

2. NO RASTER (OSD IS NOT DISPLAYED) – LIPS
NO RASTER
(OSD IS NOT DISPLAYED)
J705
PIN5, PIN 6
5V?
YES
J705 PIN2
5V?
YES
J705 PIN1
5V?
YES
CHECK
PULSE AS
CONTACTING SCOPE
PROBE TO CAUTION LABEL.
(CONTACT PROBE TO
CAUTION LABEL.
CAN YOU SEE PULSE
AT YOUR
SCOPE?
YES
REPLACE CCFL LAMP
IN THE LCD MODULE
NO
NO
NO
NO
- 11 -
CHECK LIPS
CHECK MICOM INV
ON/OFF PORT.
(U501 PIN25)
1. CONFIRM BRIGHTNESS
OSD CONTRL STATE.
2. CHECK MICOM DIM-ADJ
PORT(U501 PIN41)
LIPS