DOWNLOAD Sharp LC-37P55E (serv.man10) Service Manual ↓ Size: 196.04 KB | Pages: 6 in PDF or view online for FREE

Model
LC-37P55E (serv.man10)
Pages
6
Size
196.04 KB
Type
PDF
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Service Manual
Brand
Device
TV / LCD / SOFTWARE UPDATING
File
lc-37p55e-sm10.pdf
Date

Sharp LC-37P55E (serv.man10) Service Manual ▷ View online

22
 LC-26GA5E
 LC-32GA5E
  LC-26P55E
  LC-32P55E
  LC-37P55E
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
1- Display the current adjustment status at point 6. (Page 9/11 of process adjustment)
The pattern for checking the adjustment status is toggled by pressing the “6” button on the remote control.(Normal 
OSD display -> “6” -> pattern 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 = 0.2757 and y = 0.2825.
(Basically, G is not changed. If adjustment fails only with R and B, then G should be reduced. In this case, 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 step “5”.
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 pattern is toggled.)
(Normal OSD display -> “5” -> Pattern 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 va-
lues of the luminance meter approach 
x = 0.272 and y = 0.277.
6- Repeat step “5” for GAMMA points 4, 3, 2, and 1.
   
7 QS Temperature NVM Data Confirmation
If during servicing of the LCD TV set, by software upgrading or by clearing NVM, it’s necessary check QS Temperature 
data following the method described below:
Enter in Service Mode (Factory A). 
Enter in Factory B page 1/25, by pressing “i+” key in normal R/C. 
Go to page 24/25 by pressing twice “Cursor UP” key. 
Verify and in case necessary modify according the attached list, “QS_D1” to “QS_D7” values, depending of the screen 
size.
26 inch
32 inch
37 inch
QS_D1
58
74
51
QS_D2
76
89
72
QS_D3
92
101
90
QS_D4
105
112
106
QS_D5
118
123
121
QS_D6
254
133
254
QS_D7
255
255
255
NOTE:
-Use “P UP” or “P DOWN” for moving “up” or “down” inside the Service page.
-Use “VOL +” or “VOL -” for modifying data in “+1” or “-1” unit inside the Service page.
-Use “CURSOR RIGHT” or “CURSOR LEFT” for modifying data in “+10” or “-10” units inside the Service page.
23
 LC-26GA5E
 LC-32GA5E
  LC-26P55E
  LC-32P55E
  LC-37P55E
8 Initialization to factory settings
LC-26P50E
LC-32P50E
LC-37P50E
33
6) Display the current adjustment status at point 1. (Press the ”1” button on the remote control to toggle between
normal display and adjustment status display [normal display � ”1” � adjustment status display � ”1” � normal
display � ...].)
7) Check the brightness values using the luminance meter.
8) Change M GAMMA R1 and M GAMMA B1 on page 10/12 of process adjustment so that the brightness becomes
closest to x= 0.272 and y= 0.277.
9) Repeat step 6) to check the values. Repeat the steps until the brightness becomes closest to x= 0.272 and
y= 0.277.
10) Repeat steps 6) - 9) for points 2, 3, 4 and 5.
[W/B adjustment reference value]
Point 1 - 6 reference value      x= 0.272   y= 0.277
9.  Initialization to factory settings
Adjustment item
Adjustment conditions
Adjustment procedure
1
Factory settings
See to below caution
» Enter the adjustment process mode.
» Bring the cursor on to [INDUSTRY INIT] on page 2/11.
» Use the [Volume + -] key to select a region from [EURO/UK/ITALY/
FRANCE/RUSSIA] and press [ENTER]. “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 settings will be back to their factory ones.
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 remote control, unplug the AC power cord and plug it back in (wait
approximately 10 seconds before plugging in the AC power cord).
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.
9 Lamp error detection
9.1. Functional 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, television can not be turned ON. (The power LED remains red.)
9.2 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 detection 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.
9.3. 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. 
23
 LC-26GA5E
 LC-32GA5E
  LC-26P55E
  LC-32P55E
  LC-37P55E
8 Initialization to factory settings
LC-26P50E
LC-32P50E
LC-37P50E
33
6) Display the current adjustment status at point 1. (Press the ”1” button on the remote control to toggle between
normal display and adjustment status display [normal display � ”1” � adjustment status display � ”1” � normal
display � ...].)
7) Check the brightness values using the luminance meter.
8) Change M GAMMA R1 and M GAMMA B1 on page 10/12 of process adjustment so that the brightness becomes
closest to x= 0.272 and y= 0.277.
9) Repeat step 6) to check the values. Repeat the steps until the brightness becomes closest to x= 0.272 and
y= 0.277.
10) Repeat steps 6) - 9) for points 2, 3, 4 and 5.
[W/B adjustment reference value]
Point 1 - 6 reference value      x= 0.272   y= 0.277
9.  Initialization to factory settings
Adjustment item
Adjustment conditions
Adjustment procedure
1
Factory settings
See to below caution
» Enter the adjustment process mode.
» Bring the cursor on to [INDUSTRY INIT] on page 2/11.
» Use the [Volume + -] key to select a region from [EURO/UK/ITALY/
FRANCE/RUSSIA] and press [ENTER]. “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 settings will be back to their factory ones.
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 remote control, unplug the AC power cord and plug it back in (wait
approximately 10 seconds before plugging in the AC power cord).
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.
9 Lamp error detection
9.1. Functional 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, television can not be turned ON. (The power LED remains red.)
9.2 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 detection 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.
9.3. 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. 
23
 LC-26GA5E
 LC-32GA5E
  LC-26P55E
  LC-32P55E
  LC-37P55E
8 Initialization to factory settings
LC-26P50E
LC-32P50E
LC-37P50E
33
6) Display the current adjustment status at point 1. (Press the ”1” button on the remote control to toggle between
normal display and adjustment status display [normal display � ”1” � adjustment status display � ”1” � normal
display � ...].)
7) Check the brightness values using the luminance meter.
8) Change M GAMMA R1 and M GAMMA B1 on page 10/12 of process adjustment so that the brightness becomes
closest to x= 0.272 and y= 0.277.
9) Repeat step 6) to check the values. Repeat the steps until the brightness becomes closest to x= 0.272 and
y= 0.277.
10) Repeat steps 6) - 9) for points 2, 3, 4 and 5.
[W/B adjustment reference value]
Point 1 - 6 reference value      x= 0.272   y= 0.277
9.  Initialization to factory settings
Adjustment item
Adjustment conditions
Adjustment procedure
1
Factory settings
See to below caution
» Enter the adjustment process mode.
» Bring the cursor on to [INDUSTRY INIT] on page 2/11.
» Use the [Volume + -] key to select a region from [EURO/UK/ITALY/
FRANCE/RUSSIA] and press [ENTER]. “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 settings will be back to their factory ones.
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 remote control, unplug the AC power cord and plug it back in (wait
approximately 10 seconds before plugging in the AC power cord).
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.
9 Lamp error detection
9.1. Functional 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, television can not be turned ON. (The power LED remains red.)
9.2 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 detection 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.
9.3. 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. 
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Sharp LC-37P55E (serv.man10) Service Manual ▷ Download