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Model
LC-37SD1E (serv.man3)
Pages
25
Size
5.72 MB
Type
PDF
Document
Service Manual
Brand
Device
TV / LCD / Adjustment Procedure
File
lc-37sd1e-sm3.pdf
Date

Sharp LC-37SD1E (serv.man3) Service Manual ▷ View online

LC-37SD1E/RU
3 – 21
[6] Special features
* ERROR STANDBY CAUSE (Page 1/11)
The total time when the unit enters the standby due to operational error and cause of error are recorded on EEPROM as much as possible.
The values can be used to locate the fault for repair.
* EEP CLEAR (Page10/11)
Clear of process adjustment EEP value.
Page
Line
Item
Description
Remarks (adjustment detail, etc.)
8/11
[M GAMMA 1-3]
1
M GAMMA R 1
0
W/B adjustment, gradation 1R adjustment value
2
M GAMMA G 1
0
W/B adjustment, gradation 1G adjustment value
3
M GAMMA B 1
-8
W/B adjustment, gradation 1B adjustment value
4
M GAMMA R 2
0
W/B adjustment, gradation 2R adjustment value
5
M GAMMA G 2
0
W/B adjustment, gradation 2G adjustment value
6
M GAMMA B 2
-11
W/B adjustment, gradation 2B adjustment value
7
M GAMMA R 3
-1
W/B adjustment, gradation 3R adjustment value
8
M GAMMA G 3
0
W/B adjustment, gradation 3G adjustment value
9
M GAMMA B 3
-17
W/B adjustment, gradation 3B adjustment value
10
M GAMMA WRITE
OFF/ON
EEP writing of adjustment values
9/11
[M GAMMA 4-6]
1
M GAMMA R 4
0
W/B adjustment, gradation 4R adjustment value
2
M GAMMA G 4
0
W/B adjustment, gradation 4G adjustment value
3
M GAMMA B 4
20
W/B adjustment, gradation 4B adjustment value
4
M GAMMA R 5
-9
W/B adjustment, gradation 5R adjustment value
5
M GAMMA G 5
0
W/B adjustment, gradation 5G adjustment value
6
M GAMMA B 5
-42
W/B adjustment, gradation 5B adjustment value
7
M GAMMA R 6
-4
W/B adjustment, gradation 6R adjustment value
8
M GAMMA G 6
0
W/B adjustment, gradation 6G adjustment value
9
M GAMMA B 6
41
W/B adjustment, gradation 6B adjustment value
10
M GAMMA WRITE
OFF/ON
EEP writing of adjustment values
10/11
[ETC]
1
EEP CLEAR
OFF/ON
Clear of all adjustment value
2
EEP CLEAR B
OFF/ON
Clear of adjustment value of B mode
3
STANDBYCAUSE RESET
OFF/ON
Reset of STANDBY CAUSE
4
AUTO INSTALLATION SW
0/1
1: * * * 0: * * *
5
OPTION 
0
6
COUNTRY
AUTO/EURO/UK
Destination setting
7
L ERR RESET
0
LAMP ERR RESET Initializatio of L_ERR
8
L ERR STOP
0/1
LAMP ERR Inhibit L_LRR detection
9
DTV CLR
ENTER
Clear of DTV Setting
10
I2C-OFF
ENTER
I2C DATA execution
11/11
[LCD]
1
OSC FREQ50
144
INVERTER drive frequency setting
2
OSC FREQ60
144
INVERTER drive frequency setting
3
PWM FREQ50
0
Frequency setting for INVERTER dimmer
4
PWM FREQ60
0
Frequency setting for INVERTER dimmer
5
PWM FREQ 
409
Dimmer frequency adjustment
6
PWM DUTY
227
Dimmer DUTY adjustment
7
PWM CTRL
0
Dimmer CONTROL adjustment
LC-37SD1E/RU
3 – 22
[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. Entering the adjustment process mode 
1. Enter the adjustment process mode according to Section 3.
3. RF AGC adjustment
4. PAL signal & tuner adjustment
• Composite signal PAL
: 0.7Vp-p 
±0.02Vp-p (Pedestal to white level)
• 15K component signal
(50 Hz)
: Y level               0.7Vp-p 
±0.02Vp-p (Pedestal to white level)
  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
[Terminal]
TUNER
• Feed the PAL Sprit Field colour bar signal to TUNER.
Signal level: 50 dB 
µV +0dB, -1dB (75Ω LOAD)
2
Auto adjustment
performance
Adjustment process
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
Full Field Color Bar
Composite or RF signal
[Terminal]
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 (E-12) has the sync level of 
7:3 with the picture level.
2
Auto adjustment
performance
Adjustment process
Page3
Bring the cursor on [
PAL + TUNER ADJ] and press [OK]
[
PAL + TUNER ADJ OK] appears when finished.
[RF Signal]
100% white
100% white
VIDEO IN SIGNAL]
100% white
[RF Signal]
LC-37SD1E/RU
3 – 23
5. ADC adjustment (Component 15K)
[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.
[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.
6) Repeat step 5) for points 4, 3, 2, and 1.
[Adjustment reference standard value]
Adjustment point
Adjustment Conditions
Adjustment procedure
1
Setting
[Signal]
COMP15K, 50Hz
100% Full Field Colour Bar
[Terminal]
EXT4 COMPONENT IN
• Feed the COMPONENT 15K 100% full field colour bar signal 
(100% colour saturation) to EXT4 COMPONENT IN.
2
Auto adjustment
performance
Adjustment process
Page4
Bring the cursor on [
COMP15K ADJ] and press [OK]
[
COMP15K ADJ OK] appears when finished.
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
Adjustment spec
±0.004
Inspection spec
±0.006 (point 1)
Adjustment spec
±0.002
Inspection spec
±0.004 (Excluding the above-mentioned)
100% white
Black
LC-37SD1E/RU
3 – 24
[9] Initialization to factory settings
[10] Lamp error detection
1. Function description
This LCD colour television has a function (lamp error detection) to be turned OFF automatically for safety when the lamp or lamp circuit is abnormal.
If the lamp or lamp circuit is abnormal, or some other errors happen, and the lamp error detection is executed, the following occur.
1- The main unit of television is turned OFF 5 seconds after it is turned ON. (The power LED on the front side of TV turns from green to red.)
2- If the situation “1” happens 5 times sequentially, the power is turned on (relay is turned ON).
    However, the backlight is not turned on, and then the relay is turned OFF after 5 to 6 seconds. (The power LED turns from green to red.)
2. Countermeasures
When television is turned OFF by the lamp error detection mentioned above, it enters the adjustment process with the power LED red. Entering the
adjustment process turns OFF the error detection and turns ON TV. This enables the operation check to detect errors in the lamp or lamp circuit
Check whether “L ERROR RESET” on point 7, page 10/11 of the adjustment process is 1 or more. If it is 1 or more, it indicates the lamp error detec-
tion was executed. After confirming that the lamp or lamp circuit is normal, reset the lamp error counter pushing “OK” in the R/C. After resetting
counter the label “***OK***” appears on Screen.
3. Reset standby cause error list
After confirming that the lamp error counter has been erased, select “STAND BY CAUSE RESET” on point 3, page 10/11 of the adjustment process
and select ON using the right cursor. For execute press “OK” in the R/C and the label “***OK***” appears on Screen.
Caution:
When the factory settings have been made, all user setting data, including the channel settings, are initialized.
(The adjustments 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
See to below caution
• Enter the adjustment process mode.
• Bring the cursor to [Factory Init] on page 2/11.
• Use the [Volume +/-] key to select a region from [EURO/UK/ITALY/
FRANCE/RUSSIA] and press the [ENTER].
“EXECUTING” appears and initialization starts.
After a while, “OK” appears and the setting is complete.
NOTE: Never turn the power off during initialization.
When performing factory settings (while displaying page 2 of adjustment 
process), confirm that the item “Inch Setting” or the panel size displayed 
in the upper right corner corresponds to each panel size.
The following settings will be back to their factory ones.
1. User settings
2. Channel data (e.g. broadcast frequencies)
3. Maker option setting
4. 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 remote control, unpulug the AC power cord and plug it back in (wait approximately 10 seconds before plug-
ging in the AC power cord).
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