ELECTRICAL ADJUSTMENTS
D-1
1. ADJUSTMENT PROCEDURE
Read and perform these adjustments when repairing the
circuits or replacing electrical parts or PCB assemblies.
On-Screen Display Adjustment
1.
2.
Set the VOLUME to minimum.
Press the VOL. DOWN button on the set and the
channel button (9) on the remote control for more than
2 seconds to display adjustment mode on the screen as
shown in Fig. 1-1.
3.
4.
5.
Use the Channel UP/DOWN button or Channel button
(0-9) on the remote control to select the options shown
in Fig. 1-2.
Press the MENU button on the remote control to end
the adjustments.
To display the adjustment screen for TV, AV, CS, HD-
MI and PC mode, press the INPUT button on the
remote control. Press the VOL.DOWN button on the set
and the channel (9) on the remote control for more than
2 seconds.
FUNCTION
H POSI OSD
V POSI OSD
R DRIVE(N)
R CUT OFF(N)
G DRIVE(N)
G CUT OFF(N)
B DRIVE(N)
B CUT OFF(N)
R DRIVE(C)
R CUT OFF(C)
G DRIVE(C)
G CUT OFF(C)
B DRIVE(C)
B CUT OFF(C)
R DRIVE(W)
R CUT OFF(W)
G DRIVE(W)
G CUT OFF(W)
B DRIVE(W)
B CUT OFF(W)
H POSI
V POSI
NO.
01
02
03
04
05
06
07
08
09
10
11
12
13
14
15
16
17
18
19
20
21
22
FUNCTION
BAK LIGHT CENT
BAK LIGHT MAX
BAK LIGHT MIN
BRIGHT CENT
BRIGHT MAX
BRIGHT MIN
TINT
SHARP CENTER
SHARP MAX
SHARP MIN
CONTRAST CENTER(N)
CONTRAST MAX(N)
CONTRAST MIN(N)
COLOR CENT
COLOR MAX
COLOR MIN
CONTRAST CENTER(C)
CONTRAST MAX(C)
CONTRAST MIN(C)
CONTRAST CENTER(W)
CONTRAST MAX(W)
CONTRAST MIN(W)
Fig. 1-2
Function
Step No.
Fig. 1-1
01 H POSI 340
TV
FILL
NO.
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
CAUTION
•
•
•
•
Use an isolation transformer when performing any
service on this chassis.
Before removing the anode cap, discharge electricity
because it contains high voltage.
When removing a PCB or related component, after
unfastening or changing a wire, be sure to put the wire
back in its original position.
When you exchange IC and Transistor with a heat sink,
apply silicon grease on the contact section of the heat
sink. Before applying new silicon grease, remove all the
old silicon grease. (Old grease may cause damages to
the IC and Transistor).
Prepare the following measurement tools for electrical
adjustments.
1. Patterm Generator
2. BASIC ADJUSTMENTS
2-1: CONSTANT MAX
1.
2.
3.
4.
5.
6.
7.
8.
9.
Activate the adjustment mode display of Fig. 1-1 and
press the channel button (40) on the remote control to
select "CONTRAST MAX(C)".
Press the VOL. UP/DOWN button on the remote control
until the contrast step No. becomes "135".
Receive a broadcast and check if the picture is normal.
Press the INPUT button on the remote control to set to
the AV mode. Then perform the above adjustments 1~3.
Press the INPUT button on the remote control to set to
the CS mode.
Activate the adjustment mode display of Fig. 1-1 and
press the channel button (40) on the remote control to
select "CONTRAST MAX(C)".
Press the VOL. UP/DOWN button on the remote control
until the contrast step No. becomes "125".
Receive a broadcast and check if the picture is normal.
Press the INPUT button on the remote control to set to
the HD-MI mode. Then perform the above adjustments
6~8.
