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Model
LC-42DH77EC (serv.man5)
Pages
18
Size
712.23 KB
Type
PDF
Document
Service Manual
Brand
Device
TV / LCD / Adjustment Procedure
File
lc-42dh77ec-sm5.pdf
Date

Sharp LC-42DH77EC (serv.man5) Service Manual ▷ View online

LC-32/42/46DH77E/RU/S
3 – 13
3. TUNER adjustment
4. SECAM signal adjustment
5. ADC adjustment (Component 15K)
Adjustment point
Adjustment Conditions
Adjustment procedure
1
Setting
[Signal]
PAL split colour bar In-house UV
[Terminal]
TUNER
• Send the in-house signal (PAL colour bar) to TUNER.
• For the PAL colour bar pattern (E-12ch), the picture level and sync level must 
show a ration of 7 to 3.
2
Auto adjustment 
performance
Process page No. 3/16
Point the cursor to [TUNER ADJ] and press the [OK] key.
The adjustment is complete when [TUNER ADJ OK] is displayed.
Adjustment point
Adjustment Conditions
Adjustment procedure
1
Setting
[Signal]
SECAM full field colour bar
[Terminal]
EXT1 SCART video input
• Send the SECAM full field colour bar (colour saturation: 75%) signal to the 
SCART video input of EXT1.
2
Auto adjustment 
performance
Process page No. 4/16
Point the cursor to [SECAM ADJ] and press the [OK] key.
The adjustment is complete when [SECAM ADJ OK] is displayed.
Adjustment point
Adjustment Conditions
Adjustment procedure
1
Setting
[Signal]
COMP15K 50Hz 100% full field 
colour bar
[Terminal]
EXT3 component input
• Send the component 15K 100% full field colour bar (colour saturation: 100%) 
signal to the component input of EXT3.
2
Auto adjustment 
performance
Process page No. 6/16
Point the cursor to [COMP 15k ALL ADJ] and press the [OK] key.
The adjustment is complete when [COMP 15k ALL OK] is displayed.
100% white
[In-house E-12CH]
[VIDEO input signal]
100% white
100% white
Black
LC-32/42/46DH77E/RU/S
3 – 14
6. ADC adjustment (Component 33K)
7. PC (Analog D-sub 15-pin) signal adjustment
8. RGB (SCART) signal adjustment
Adjustment point
Adjustment Conditions
Adjustment procedure
1
Setting
[Signal]
COMP33K 50Hz 100% full field 
colour bar
[Terminal]
EXT3 component input
• Send the component 33K 100% full field colour bar (colour saturation: 100%) 
signal to the component input of EXT3.
2
Auto adjustment 
performance
Process page No. 7/16
Point the cursor to [HDTV ADJ] and press the [OK] key.
The adjustment is complete when [HDTV ADJ OK] is displayed.
Adjustment point
Adjustment Conditions
Adjustment procedure
1
Setting
[Signal]
XGA 60Hz
100% full field color bar
[Terminal]
EXT4 PC input
• Send the XGA 60Hz 100% full field color bar (color saturation: 100%) signal 
to the PC input of EXT4.
2
Auto adjustment 
performance
Process page No. 8/16
Point the cursor to [ANALOG PC ADJ] and press the [OK] key.
The adjustment is complete when [ANALOG PC ADJ OK] is displayed.
Adjustment point
Adjustment Conditions
Adjustment procedure
1
Setting
[Signal]
RGB 15K 60Hz
100% full field color bar
[Terminal]
EXT1 SCART RGB input
• Send the RGB 15K 100% full field color bar (color saturation: 100%) signal to 
the SCART input of EXT1.
2
Auto adjustment 
performance
Process page No. 9/16
Point the cursor to [SCART RGB ADJ] and press the [OK] key.
The adjustment is complete when [SCART RGB ADJ OK] is displayed.
100% white
Black
100% white
Black
100% white
Black
LC-32/42/46DH77E/RU/S
3 – 15
10. White Balance Adjustment
11. Confirmation item
1. HDMI-CEC inspection
Check that the HDMI-CEC circuit is operating.
Adjustment point
Adjustment conditions
Adjustment procedure
1
Setting
Light control: MAX (+16)
(Place the luminance meter in 
the center of the screen.)
1) Confirm the setting conditions.
2) Connect the white balance adjustment jig.
3) Display the adjustment screen by the RS-232C command.
2
Automatic adjustment 
execution
[Command]
[Adjustment procedure]
Process mode
 KRSW0001
 KKT10037
Setting
 KY0F0000
 0SDS0001
 SBSL0016
Multi-point adjustment mode
 MSET0001
Adjustment value initialization
MSET0004
Point 6
 LEV60232
 MG6G****
 MG6B****
 MG6R****
Point 5
 LEV50200
 MG5G****
 MG5B****
 MG5R****
Point 4
 LEV40136
 MG4G****
 MG4B****
 MG4R****
Point 3
 LEV30114
 MG3G****
 MG3B****
 MG3R****
Point 2
 LEV20078
 MG2G****
 MG2B****
 MG2R****
Point 1
 LEV10048
 MG1G****
 MG1B****
 MG1R****
Writing
 MSET0003
1) Transmit the “monitor adjustment process” code using the remote control.
2) Set the point 6 to the specified gradation, specify the strongest color as the 
fixed color, and adjust the RGB so that it becomes the standard value through 
negative adjustment.
3) Set the point 5 to the specified gradation, set the G correction value (3200 x G 
value of point 6/3712) (fractions rounded off), and adjust the RB so that it 
becomes the standard value.
4) Set the point 4 to the specified gradation, set the G correction value (2176 x G 
value of point 6/3712) (fractions rounded off), and adjust the RB so that it 
becomes the standard value.
5) Set the point 3 to the specified gradation, set the G correction value (1824 x G 
value of point 6/3712) (fractions rounded off), and adjust the RB so that it 
becomes the standard value.
6) Set the point 2 to the specified gradation, set the G correction value (1248 x G 
value of point 6/3712) (fractions rounded off), and adjust the RB pattern so 
that it becomes the standard value.
7) Set the point 1 to the specified gradation, set the G correction value (768 x G 
value of point 6/3712) (fractions rounded off), and adjust the RB so that it 
becomes the standard value.
8) Write the adjustment value by the MSET0003 command and turn off the AC 
power.
* RGB initial value of point 6: Set gradation 3712
* RGB initial value of points 1 to 5: G correction value of each point
(At each point, adjustment is made so that the remainder of the RGB adjust-
ment value/4 is equal.)
[Adjusted value]
* According to the “Standard settings” submitted by the Technical Department.
[Adjustment standard value]
Measuring instrument: [Minolta CA-210] Technical measuring instrument
Level
Reference 
value
Adjustment 
spec
Inspection 
spec
Point 6
928
x = 0.272
±0.001
±0.002
y = 0.277
Point 5
800
x = 0.272
±0.001
±0.002
y = 0.277
Point 4
544
x = 0.272
±0.0015
±0.003
y = 0.277
Point 3
456
x = 0.272
±0.0015
±0.003
y = 0.277
Point 2
312
x = 0.272
±0.003
±0.006
y = 0.277
Point 1
192
x = 0.272
±0.0035
±0.007
y = 0.277
Remarks
Setting conditions when performing inspection
  AV MODE: [DYNAMIC]
  Monochro: ON
  Aging Time: Min. 60 minutes
LC-32/42/46DH77E/RU/S
3 – 16
12. Initialization to factory settings
After completing the factory setting, turn off the AC power.
CAUTION: Do not turn on the power after completing the factory setting. If the power is turned on, configure the factory setting again. Do not turn off
the power using the remote control.
13. Upgrading the software
1. Turn off the AC power (Unplug the AC power cord).
2. Insert the upgrading USB flash memory for upgrade into the service slot.
3. While holding down the power button, plug in the AC power cord of the main unit to turn on the power.
4. Upgrade begins automatically.
After the set starts, the upgrade screen like the figure below is displayed.
5. If any of the procedures fails, the following upgrade failure screen shows up. For the failing procedure, the “NG” marking turns red.
NOTE: In such case, try to upgrade the software again. If it still fails, the hardware may be in trouble.
Adjustment 
point
Adjustment conditions
Adjustment procedure
1
Factory setting
Complete the setting by 
turning off the AC power.
In INDUSTRY INIT of the process page No. [2/16], select the destination [EUROPE / RUS-
SIA / SWEDEN] using the [R/C] Volume +/- keys, and press the [R/C] OK key.
“///////////” is displayed, and then “SUCCESS ----- Destination” appears to complete the set-
ting.
Success: Background color [Green] / Failure: Background color [Red]
Initialize the following items when configuring the factory setting.
1) User setting values
2) Channel data (broadcasting frequency, etc.)
3) Manufacturer option setting values
4) Password data
DH77
MAIN
SUB MICON
PANEL EEPROM
MAIN Versiin
SUB MICON Version
PANEL EEPROM
1.00
1.00
NO DATA
Software Update
0%
0%
NO DATA
DH77
MAIN
SUB MICON
PANEL EEPROM
MAIN Versiin
SUB MICON Version
PANEL EEPROM
Software Update
30%
NO DATA
30%
NO DATA
1.00
1.00
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