Electrical Adjustments - Sharp LC-26SH10U - 26" LCD TV Service Manual

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. 2-1.
01 H POSI OSD
3. Use the UP/DOWN button or Channel button (0-9) on
the remote control to select the options shown in
Fig. 2-2.
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.

ELECTRICAL ADJUSTMENTS

TV
346
Fig. 2-1
D-1
NO. FUNCTION
01 H POSI OSD
02 V POSI OSD
03 R DRIVE (N)
04 R CUTOFF (N)
05 G DRIVE (N)
06 G CUTOFF (N)
07 B DRIVE (N)
08 B CUTOFF (N)
09 R DRIVE (C)
10 R CUTOFF (C)
11 G DRIVE (C)
12 G CUTOFF (C)
13 B DRIVE (C)
14 B CUTOFF (C)
15 R DRIVE (W)
16 R CUTOFF (W)
17 G DRIVE (W)
18 G CUTOFF (W)
19 B DRIVE (W)
20 B CUTOFF (W)
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. 1-1 and
press the channel button (03) on the remote control to
select "R DRIVE (N)".
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.
NO. FUNCTION
22 H POSI 60Hz
24 V POSI 60Hz
25 BAK LIGHT CENT
26 BAK LIGHT MAX
27 BAK LIGHT MIN
28 BRIGHT CENT
29 BRIGHT MAX
30 BRIGHT MIN
31 TINT
35 CONTRAST CENTER
36 CONTRAST MAX
37 CONTRAST MIN
38 COLOR CENT
39 COLOR MAX
40 COLOR MIN
63 CONTRAST 40
64 BRIGHT (3F54)
65 CONTRASR (3F54)
66 SRC TOP
67 DFEA VIMGVT
Fig. 2-2