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 INPUT SELECT button on the remote control
to end the adjustments.
To display the adjustment screen for TV, AV, CS mode,
press the GAME button on the remote control to set to
the GAME, press the TV/DVD button on the remote
control to set to the DVD mode, press the INPUT
SELECT 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 OSD 175
TV
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.
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).
2. BASIC ADJUSTMENTS
2-1: CONTRAST MAX
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
13.
Receive the monoscope pattern. (RF Input)
Using the remote control, set the brightness and contrast
to normal position.
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 LEFT/RIGTH button on the remote control until
the contrast step No. becomes "118"
Receive a broadcast and check if the picture is normal.
Press the INPUT SELECT button on the remote control
to set to the AV mode.
Using the remote control, set the brightness and contrast
to normal position.
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 LEFT/RIGTH button on the remote control until
the contrast step No. becomes "110"
Receive a broadcast and check if the picture is normal.
Playback the DVD(480i) disc. (COMPONENT input)
Press the INPUT SELECT button on the remote control
to set to the CS mode.Then perform the above
adjustments 6~9.
Playback the DVD(480p) disc. (COMPONENT intput)
Press the INPUT SELECT button on the remote control
to set to the CS mode.Then perform the above
adjustments 6~9.
Prepare the following measurement tools for electrical
adjustments.
1. Patterm Generator
