Sharp LC-26SH7E Service Manual ▷ View online
2008-03-14
LC-19S7E-BK LC-26S7E-BK LC-32S7E-BK
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2)
. White Balance Adjustment (B)
General set-up:
Equipment
Requirements:
Color
analyzer.
Input
requirements:
For SZ factory:
Signal Type : RF signal
Signal Type : RF signal
Set to PAL D/K system, frequency=184.25MHz ( for China
model ) with white pattern of 80%
Set to PAL B/G system, frequency=64.25MHz ( for AP
model ) with white pattern of 80%
Input Signal Strength : 10mV (80 dBuV) terminal voltage.
Input Injection Point : TV Tuner input
For FQ factory:
Signal Type : CVI (YPbPr)
For FQ factory:
Signal Type : CVI (YPbPr)
U
sing Quantum Data Pattern Generator 802G or 802R or 882;
Set to 576i with white pattern of 80% (flat patten)
Alignment Request in the center of the screen
Apply full white pattern, select smart setting to be Standard. Adjusting SCALER GAIN R G B to reach
W/D and luminance in factory mode as below.
Adjust Color Temp in the factory Mode OSD by adjusting GAIN R xxx G xxx B xxx in
factory mode (Fig. 4)
CIE1391 chromaticity (x,y) shall be
Color Temp.
x
y
Cool
0.272 + 0.01
0.277+ 0.01
Normal
0.289 + 0.01
0.291 + 0.01
Warm
0.314 + 0.01
0.319 + 0.01
~ R/G/B Gain value <= 127 to avoid satsuation at 32-grey pattern.
~At TV Luminance at Normal >= 250 cd/m
2
when contrast and brightness and color are 100%.
~
At PC Luminance at Normal >= 250 cd/m
2
when contrast and brightness are 100%.
~
These group settings about color temp are also applied automatically into
HDMI1/CVI(for SZ factory)/SIDE AV/PC/TV(for FQ factory). That means TV/HDMI/CVI/PC are
used the same setting.
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[2] SERVICE MODE
Enter factory mode menu: Press the key “1999” on remote control.
Press ↑, ↓ to choose the value
Press OK to fix the value.
Press OK to exit the factory mode when choose “exit” value,
2008-03-14
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[3] SOFTWARE UPGRADE PROCEDURE
Connect to TV USB port to upgrade the software firmware.
Please follow the following step to upgrade the firmware.
1. Copy the software firmware (*.bin) to USB Disk.
2. Insert the USB Disk to TV USB port.
3. Unplug the AC cord.
4. AC power on
5. Reboot TV to update SW automatically. During upgrade FW the front LED will red light blink.
6. When FW upgrade is finished LED will stop blinking and keep at (Blue + red) color.
After finish upgrade process.
7. Remove USB disk from TV.
8. Turn AC Off then On to reboot TV
Check the software version is correct or not. (Menu /Installation/Current software)
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CHAPTER 4.
TROUBLESHOOTING TABLE
[1] TROUBLESHOOTING TABLE(19”)
Power unit operation check.
↓
LINE_FILTER_UNIT:
↓ YES
POWER_UNIT
↓YES
↓YES
↓YES
Are the power cord and harness in the unit properly connected?
NO
Connect the power cord and harness properly, and turn on the
power.
power.
Is F901 normal?
NO
LINE_FILTER_UNIT:
Isn't C908, RV901, L902, C900, C901, etc. out of order?
Moreover, whether the short-circuit with the circumference circuit
is checked.
Isn't C908, RV901, L902, C900, C901, etc. out of order?
Moreover, whether the short-circuit with the circumference circuit
is checked.
Is BD901 (+320V) output?
* When power on/off switch is on ‧‧‧ About +400V
* When power on/off switch is on ‧‧‧ About +400V
Does the circuit operate normally?
Check circuit around (FB901, Q906, ZD904, IC901 etc ).
Check circuit around (FB901, Q906, ZD904, IC901 etc ).
NO
Is a voltage of +5.3V applied to pin (3,4) of connector (CN902)?
Does the switching circuit operate normally?
Check circuit around the primary side (T901, ZD906, D901,
D903, Q903, D904, IC901, IC902, D905 etc.), the secondary
side (D905, L904, etc.), the DC_DET circuit (IC902, ZD903,
IC901, ZD902, etc.), and the protection circuit.
Check circuit around the primary side (T901, ZD906, D901,
D903, Q903, D904, IC901, IC902, D905 etc.), the secondary
side (D905, L904, etc.), the DC_DET circuit (IC902, ZD903,
IC901, ZD902, etc.), and the protection circuit.
NO
Is a voltage of +18V applied to pin (8,9) of connector (CN902)?
NO
Does the inverter circuit operate normally?
Check circuit around (Q801, ZD801, ZD802, Q805, Q806, IC801,
T801, L801, L802, etc.), and the protection circuit.
Check circuit around (Q801, ZD801, ZD802, Q805, Q806, IC801,
T801, L801, L802, etc.), and the protection circuit.
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