DOWNLOAD Sharp LC-26SH7E Service Manual ↓ Size: 21.71 MB | Pages: 127 in PDF or view online for FREE

Model
LC-26SH7E
Pages
127
Size
21.71 MB
Type
PDF
Document
Service Manual
Brand
Device
TV / LCD
File
lc-26sh7e.pdf
Date

Sharp LC-26SH7E Service Manual ▷ View online

         2008-03-14 
LC-19S7E-BK LC-26S7E-BK LC-32S7E-BK 
 25 
 
2)
. White Balance Adjustment (B)
 
General set-up: 
 Equipment 
Requirements: 
Color 
analyzer. 
 Input 
requirements: 
 
For SZ factory:  
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) 
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. 
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. 
 
LC-19S7E-BK LC-26S7E-BK LC-32S7E-BK 
 
26  
 [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 
LC-19S7E-BK LC-26S7E-BK LC-32S7E-BK 
 27 
[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) 
 
 
LC-19S7E-BK LC-26S7E-BK LC-32S7E-BK 
 
28  
CHAPTER 4. 
TROUBLESHOOTING TABLE
 
 
[1] TROUBLESHOOTING TABLE19” 
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.
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. 
Is BD901 (+320V) output?  
 
*  When power on/off switch is on  ‧‧‧ About +400V 
Does the circuit operate normally? 
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.
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.
 
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