6
20LK31M
20LK61M
For adjustments of this model, the bus data is converted to various analog signals by the D/A converter circuit.
Note: There are still a few analog adjustments in this series such as focus and master screen voltage. Follow
the steps below whenever the service adjusment is required.
To enter the service mode and exit service mode.
While pressing the Vol-up and Ch-up buttons at the sametime, plug the AC cord into a wall socket.
Now, the TV set is switched on and enters the service mode.
To exit the service mode, turn the television off by pressing the power button.
1. Service mode.
Before putting unit into the service mode, check that customer adjustments are in the normal mode. Use the reset
function in the video adjustment menu to ensure customer control are in their proper (reset) position.
2. Service number selection.
In the service mode, you will see the window screen as window
1
. There are 3 adjustment categories
2
DEF,
3
SIGNAL,
4
FIX VALUE as show in Figure A.
Press CH UP/DOWN button for selection and enter by VOL UP or VOL DOWN.
Press CH UP/DOWN button to select the adjustment item and VOL UP/DOWN
to adjust the data number for each categories.
(OSD disturbance can be erased by R/C display key)
(Note: EEPROM – factory used only)
Figure A: Adjustment Categories
Window
2
: DEF
DEF
RETURN
FIX VALUE
NEXT
RETURN
D01
D03
D05
RETURN
D02
D04
D06
Window
4
: FIX VALUE
Window
1
: ADJUSTMENT Categories
SERVICE MODE
DEF
SIGNAL
FIX VALUE
EEPROM
RETURN
Window
3
: SIGNAL
SIGNAL
S01
S13
RETURN
S02
S12
F01
F02
F13
F14
RETURN
NEXT
F15
F16
F25
F26
RETURN PREVIOUS
PREVIOUS
Summary of Contents for 20LK31M
Page 10: ...10 20LK31M 20LK61M 6 5 4 3 2 1 A B C D E F G H MODEL 20LK31M CHASSIS LAYOUT PWB A PWB B PWB C ...
Page 11: ...11 20LK31M 20LK61M 6 5 4 3 2 1 A B C D E F G H MODEL 20LK61M CHASSIS LAYOUT PWB A PWB B PWB C ...
Page 12: ...12 20LK31M 20LK61M 6 5 4 3 2 1 A B C D E F G H MODEL 20LK31M BLOCK DIAGRAM ...
Page 13: ...13 20LK31M 20LK61M 6 5 4 3 2 1 A B C D E F G H MODEL 20LK61M BLOCK DIAGRAM ...
Page 18: ...20 20LK31M 20LK61M 6 5 4 3 2 1 A B C D E F G H MODEL 20LK61M SCHEMATIC DIAGRAM MAIN 2 Unit ...
Page 20: ...22 20LK31M 20LK61M 6 5 4 3 2 1 A B C D E F G H PWB A MAIN Unit Wiring Side ...
Page 21: ...23 20LK31M 20LK61M 6 5 4 3 2 1 A B C D E F G H PWB A MAIN Unit Component Side ...
