ELECTRICAL ADJUSTMENTS
D-1
1. ADJUSTMENT PROCEDURE
Read and perform these adjustments when repairing the
circuits or replacing electrical parts or PCB assemblies.
CAUTION
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
.
Fig. 1-1
•
•
•
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 damage to the
IC and Transistor).
Prepare the following measurement tools for electrical
adjustments.
1. Pattern Generator
TUNER
16:9
01 OSD
H POSI
Function
PAL
Step No.
12
FUNCTION
OSD H POSI
OSD V POSI
R DRIVE(N)
R CUTOFF(N)
G DRIVE(N)
G CUTOFF(N)
B DRIVE(N)
B CUTOFF(N)
R DRIVE(C)
R CUTOFF(C)
G DRIVE(C)
G CUTOFF(C)
B DRIVE(C)
B CUTOFF(C)
R DRIVE(W)
R CUTOFF(W)
G DRIVE(W)
G CUTOFF(W)
B DRIVE(W)
B CUTOFF(W)
H POSI
H POSI MAX
H POSI MIN
NO.
01
02
03
04
05
06
07
08
09
10
11
12
13
14
15
16
17
18
19
20
21
22
23
NO.
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
FUNCTION
V POSI
V POSI MAX
V POSI MIN
BACKLIGHT CENTER
BACKLIGHT MAX
BACKLIGHT MIN
BRIGHT CENTER
BRIGHT MAX
BRIGHT MIN
TINT CENTER
CONTRAST CENTER
CONTRAST MAX
CONTRAST MIN
CONTRAST 50
COLOR CENTER
COLOR MAX
COLOR MIN
TEXT H POSI
TEXT V POSI
Fig. 1-2
2. BASIC ADJUSTMENTS
2-1: WHITE BALANCE
1.
2.
3.
4.
5.
6.
7.
8.
Place the set in Aging Test for more than 15 minutes.
Receive the gray scale pattern from the Pattern
Generator.
Press the INPUT 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
(03)
on the remote control to
select "R DRIVE(N)".
Press the PAGE UP/DOWN button on the remote
control to select the "R DRIVE(N)", "R CUTOFF(N)",
"B DRIVE(N)", "B CUTOFF(N)", "R DRIVE(C)",
"R CUTOFF(C)", "B DRIVE(C)", "B CUTOFF(C)",
"R DRIVE(W)", "R CUTOFF(W)", "B DRIVE(W)" or
"B CUTOFF(W)".
Adjust the LEFT/RIGHT button on the remote control to
whiten the R DRIVE(N), R CUTOFF(N), B DRIVE(N),
B CUTOFF(N), R DRIVE(C), R CUTOFF(C),
B DRIVE(C), B CUTOFF(C), R DRIVE(W),
R CUTOFF(W), B DRIVE(W) and B CUTOFF(W)
at each step tone sections equally.
Perform the above adjustments 6 and 7 until the white
achieved.
3.
4.
5.
6.
7.
8.
Use the UP/DOWN button or Channel button
(0-9)
on
the remote control to select the options shown in
Fig. 1-2
.
Press the MENU SETUP button on the remote control to
end the adjustments.
To display the adjustment screen for TUNER, AV,
COMPONENT, HDMI PC and DVD mode, press the
INPUT button on the remote control.
Receive the DIGITAL broadcasting.
To display the adjustment screen for DTV mode, select
the digital channel.
Press the VOL.DOWN button on the set and the channel
(9)
on the remote control for more than 2 seconds.
19DV555DB/19DV555DG/19DV556DB/19DV556DG
