Sharp LC-32SA1E (serv.man2) Service Manual ▷ View online
LC-26SA1E/RU, LC-32SA1E/RU
5 – 14
[7] Video signal adjustment procedure
* The adjustment process mode menu is listed in Section 5.
1. Signal check
1. Signal generator level adjustment check (Adjustment to the specified level)
2. EnterinEnter the adjustment process mode
1. Enter the adjustment process mode according to Section 3.
3. RF AGC adjustment
4. RF AGC Adjustment (SMPTE RF SIGNAL- Alternative Method)
•Composite signal PAL
: 0.7Vp-p
±0.02Vp-p (Pedestal to white level)
•15K component signal
: Y level 0.7Vp-p
±0.02Vp-p (Pedestal to white level)
(50 Hz)
PB, PR level 0.7Vp-p
±0.02Vp-p
Adjustment point
Adjustment Conditions
Adjustment procedure
1
Setting
[Signal]
PAL
Sprit Field Colour Bar
RF signal UV
PAL
Sprit Field Colour Bar
RF signal UV
[Terminal]
TUNER
TUNER
•Feed the PAL Sprit Field colour bar signal to TUNER.
Signal level: 52 dB
Signal level: 52 dB
µV +0dB , -1dB (75Ω LOAD)
2
Auto adjustment
performance
performance
Adjustment process
Page3
Page3
Bring the cursor on [
RF AGC ADJ] and press [OK]
[
RF AGC ADJ OK] appears when finished.
Adjustment point
Adjustment Conditions
Adjustment procedure
1
Setting
[Signal]
PAL
SMPTE Field Color Bar
RF signal UV
[Terminal]
TUNER
PAL
SMPTE Field Color Bar
RF signal UV
[Terminal]
TUNER
•Feed the PAL SMPTE color bar signal (E-12ch) to TUNER.
Signal level: 52
Signal level: 52
±1dB µV (75Ω LOAD)
2
Auto adjustment
performance
performance
Adjustment process
Page6
Page6
Bring the cursor on [
RF AGC ADJ] and press [OK].
[
RF AGC ADJ OK] appears when finished.
[RF Signal]
㸡
100% white
LC-26SA1E/RU, LC-32SA1E/RU
5 – 15
5. PAL signal & tuner adjustment
6. PAL Signal & Tuner Adjustment (SMPTE RF SIGNAL-Alternative Method)
7. ADC adjustment (Component 15K)
Adjustment point
Adjustment Conditions
Adjustment procedure
1
Setting
[Signal]
PAL
Full Field Color Bar
Composite or RF signal
PAL
Full Field Color Bar
Composite or RF signal
[Terminal]
EXT3 VIDEO IN
TUNER
EXT3 VIDEO IN
TUNER
•Feed the PAL full field colour bar signal (75% colour saturation) to
EXT3 VIDEO IN.
•Feed the RF signal (PAL colour bar) to TUNER.
•Make sure the PAL colour bar pattern has the sync level of 7:3 with
the picture level.
EXT3 VIDEO IN.
•Feed the RF signal (PAL colour bar) to TUNER.
•Make sure the PAL colour bar pattern has the sync level of 7:3 with
the picture level.
2
Auto adjustment
performance
performance
Adjustment process
Page3
Page3
Bring the cursor on [
PAL + TUNER ADJ] and press [OK]
[
PAL + TUNER ADJ OK] appears when finished.
Adjustment point
Adjustment Conditions
Adjustment procedure
1
Setting
[Signal]
PAL
Full Field Color Bar
Composite or RF SMPTE signal
[Terminal]
EXT3 VIDEO IN
TUNER
PAL
Full Field Color Bar
Composite or RF SMPTE signal
[Terminal]
EXT3 VIDEO IN
TUNER
•Feed the PAL full field color bar signal (75% color saturation) to EXT3
VIDEO IN
•Feed the RF signal SMPTE color bar (E-12) to TUNER.
•Make sure the SMPTE color bar pattern (E-12) has the sync level of
7:3 with the picture level.
VIDEO IN
•Feed the RF signal SMPTE color bar (E-12) to TUNER.
•Make sure the SMPTE color bar pattern (E-12) has the sync level of
7:3 with the picture level.
2
Auto adjustment
performance
performance
Adjustment process
Page6
Page6
Bring the cursor on [
PAL +TUNER ADJ] and press [OK].
[
PAL+ TUNER ADJ OK] appears when finished.
Adjustment point
Adjustment Conditions
Adjustment procedure
1
Setting
[Signal]
COMP15K, 50Hz
100% Full Field Colour Bar
COMP15K, 50Hz
100% Full Field Colour Bar
[Terminal]
EXT4 COMPONENT IN
EXT4 COMPONENT IN
•Feed the COMPONENT 15K 100% full field colour bar signal (100%
colour saturation) to EXT4 COMPONENT IN.
colour saturation) to EXT4 COMPONENT IN.
2
Auto adjustment
performance
performance
Adjustment process
Page4
Page4
Bring the cursor on [
COMP15K ADJ] and press [OK]
[
COMP15K ADJ OK] appears when finished.
㸡
100% white
㪲
VIDEO IN SIGNAL]
㸡
100% white
[RF Signal]
100% white
Black
LC-26SA1E/RU, LC-32SA1E/RU
5 – 16
[8] White Balance Adjustment
Adjustment gradation values (IN) appear on page 7/11 of process adjustment, and adjustment initial values (offset value) appear on pages 8/11 and
9/11. For white balance adjustment, adjust the offset values on pages 8/11 and 9/11.
9/11. For white balance adjustment, adjust the offset values on pages 8/11 and 9/11.
[Condition of the unit for inspection] Modulated light: MAX (+8)
[Adjustment reference device] Minolta CA-210
[Adjustment]
Check that the values on page 7/11 of process adjustment are set as below. If not, change them accordingly.
1) Display the current adjustment status at point 6. (Page 8/11 of process adjustment)
The display for checking the adjustment status is toggled by pressing the “6” button on the remote control.
(Normal OSD display
→ “6”→ display for check (OSD disappears) → “6” →normal OSD display → • • •)
2) Read the value of the luminance meter.
3) Change M GAMMA R6/M GAMMA B6 (Adjustment offset value) on page 9/11 of process adjustment so that the values of the luminance meter
approach x =0.272 and y =0.277.
(Basically, G is not changed. If adjustment fails with R and B, change G. When G is lowered, the weaker of R and B must be fixed.)
4) If G is changed in step 3), change the values of M GAMMA G1-M GAMMA G5 on pages 8/11 and 9/11 of process adjustment as follows. When
not changed, go to step5).
Offset value of M GAMMA G1 = (Offset value of M GAMMA G6) * (160/960)
Offset value of M GAMMA G2 = (Offset value of M GAMMA G6) * (320/960)
Offset value of M GAMMA G3 = (Offset value of M GAMMA G6) * (480/960)
Offset value of M GAMMA G4 = (Offset value of M GAMMA G6) * (640/960)
Offset value of M GAMMA G5 = (Offset value of M GAMMA G6) * (800/960)
5) Display the adjustment status of the current point 5. (Each time the “5” button on the remote control is pressed, the adjustment status check dis-
play is toggled.)
(Normal OSD display
→ “5” → Check display (OSD disappears) → “5” → Normal OSD display → • • •)
Change M GAMMA R5/M GAMMA B5 (adjustment offset value) on page 9/11 of process adjustment so that the values of the luminance meter
approach x = 0.272 and y = 0.277.
approach x = 0.272 and y = 0.277.
6) Repeat step 5) for points 4, 3, 2, and 1.
M GAMMA IN 1
160
M GAMMA IN 2
320
M GAMMA IN 3
480
M GAMMA IN 4
640
M GAMMA IN 5
800
M GAMMA IN 6
960
LC-26SA1E/RU, LC-32SA1E/RU
5 – 17
[9] QS Temperature NVM Data Confirmation
During servicing of the LCD TV set , by software upgrading or by any cleaning NVM, itÅfs mandatory select the ÅgInch SettingÅh in Service Mode,
Page 2, according to the size of the TV set.
Page 2, according to the size of the TV set.
[10] Initialization to factory settings
Caution:
When the factory settings have been made, all user setting data, including the channel settings, are initialized. (The adjust-
ments done in the adjustment process mode are not initialized.) Keep this in mind when initializing these settings.
ments done in the adjustment process mode are not initialized.) Keep this in mind when initializing these settings.
Adjustment item
Adjustment conditions
Adjustment procedure
1
Factory settings
Forcibly turn off the power
(See to below caution)
(See to below caution)
•Enter the adjustment process mode.
•Move the cursor to [Factory Init] on page 2/11.
•Use the R/C
•Move the cursor to [Factory Init] on page 2/11.
•Use the R/C
key to select a region from [EURO/UK/ITALY/
FRANCE/RUSSIA]and press the [OK] key.
“EXECUTING” appears and initialization starts.
After a while,”***OK***” appears and the setting is complete.
Note: Never turn the power off during initialization.
•The following items are initialized in the factory setting.
1. User settings
2. Channel data (e.g. broadcast frequencies)
3. Password data
“EXECUTING” appears and initialization starts.
After a while,”***OK***” appears and the setting is complete.
Note: Never turn the power off during initialization.
•The following items are initialized in the factory setting.
1. User settings
2. Channel data (e.g. broadcast frequencies)
3. Password data
After adjustments, exit the adjustment process mode.
To exit the adjustment process mode, unplug the AC power cord from the outlet to forcibly turn off the power.
When the power is turned off with the remoto control, unpulug the AC power cord and plug it back in.
To exit the adjustment process mode, unplug the AC power cord from the outlet to forcibly turn off the power.
When the power is turned off with the remoto control, unpulug the AC power cord and plug it back in.
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