ELECTRICAL ADJUSTMENTS
1. ADJUSTMENT PROCEDURE
Read and perform these adjustments when repairing the circuits or replacing electrical parts or PCB assemblies.
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 (YG6260M) 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
2.BASIC ADJUSTMENTS
On-Screen Display Adjustment
1.Set the VOLUME to minimum.
2.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.
TV
AUTO
01 H POSI OSD | 346 |
Fig.
3.Use the UP/DOWN button or Channel button
4.Press the MENU button on the remote control to end the adjustments.
5.To display the adjustment screen for AV, CS, HDMI mode, press the INPUT button on the remote control to set to the AV, CS, HDMI mode. Press the VOL.DOWN button on the set and the channel (9) on the remote control for more than 2 seconds.
NO. | FUNCTION | NO. | FUNCTION |
01 | H POSI OSD | 22 | H POSI 60Hz |
02 | V POSI OSD | 24 | V POSI 60Hz |
03 | R DRIVE (N) | 25 | BAK LIGHT CENT |
04 | R CUTOFF (N) | 26 | BAK LIGHT MAX |
05 | G DRIVE (N) | 27 | BAK LIGHT MIN |
06 | G CUTOFF (N) | 28 | BRIGHT CENT |
07 | B DRIVE (N) | 29 | BRIGHT MAX |
08 | B CUTOFF (N) | 30 | BRIGHT MIN |
09 | R DRIVE (C) | 31 | TINT |
10 | R CUTOFF (C) | 35 | CONTRAST CENTER |
11 | G DRIVE (C) | 36 | CONTRAST MAX |
12 | G CUTOFF (C) | 37 | CONTRAST MIN |
13 | B DRIVE (C) | 38 | COLOR CENT |
14 | B CUTOFF (C) | 39 | COLOR MAX |
15 | R DRIVE (W) | 40 | COLOR MIN |
16 | R CUTOFF (W) | 63 | CONTRAST 40 |
17 | G DRIVE (W) | 64 | BRIGHT (3F54) |
18 | G CUTOFF (W) | 65 | CONTRASR (3F54) |
19 | B DRIVE (W) | 66 | SRC TOP |
20 | B CUTOFF (W) | 67 | DFEA VIMGVT |
Fig.
2-1: WHITE BALANCE
1.Place the set in Aging Test for more than 15 minutes.
2.Receive the gray scale pattern from the Pattern Generator.
3.Press the INPUT button on the remote control to set to the AV mode.
4.Using the remote control, set the brightness and contrast to normal position.
5.Activate the adjustment mode display of Fig.
6.Press the UP/DOWN button on the remote control to
select the “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)”.
7.Adjust the RIGHT/LEFT button on the remote control to whiten the 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.
8.Perform the above adjustments 5 and 6 until the white color is looked like a white.