DOWNLOAD Sharp LC-26P50E Service Manual ↓ Size: 1.69 MB | Pages: 47 in PDF or view online for FREE

Model
LC-26P50E
Pages
47
Size
1.69 MB
Type
PDF
Document
Handy Guide
Brand
Device
TV / LCD / Version 1.1
File
lc-26p50e.pdf
Date

Sharp LC-26P50E Handy Guide ▷ View online

Electrical Adjustments
Version 1.1
Issue 06/2006
37
SHARP ELECTRONICS (UK) LTD
CE TECHNICAL SUPPORT
TECHNICAL SERVICES GROUP
(10) 
ADC adjustment (SCART RGB)
White Balance Adjustment
Adjustment gradation values (IN) appear on page 9/12 of process adjustment, and
adjustment initial values (OUT) appear on pages 10/12 and 11/12. For white balance
adjustment, adjust the OUT values on pages 10/12 and 11/12.
[Condition of the unit for inspection] Modulated light: MAX (+8)
[Adjustment reference device] Minolta CA-210
[Adjustment]
Check that the values on page 9/12 of process adjustment are set as below. If not, change
them accordingly.
1) Display the current adjustment status at point 6. (Press the ”6” button on the remote control
to toggle between normal display and adjustment status display [normal display - ”6” -
adjustment status display - ”6” - normal display - ...].)
2) Check the brightness values using the luminance meter.
3) Change M GAMMA R6, M GAMMA G6 and M GAMMA B6 on page 11/12 of process
adjustment so that the brightness becomes closest to x=0.272 and y=0.277.
4) Repeat step 1) to check the values. Repeat the steps until the brightness becomes closest
to x=0.272 and
5) Set M GAMMA G1, M GAMMA G2, M GAMMA G3, M GAMMA G4 and M GAMMA G5
according to the following formulae.
Electrical Adjustments
Version 1.1
Issue 06/2006
38
SHARP ELECTRONICS (UK) LTD
CE TECHNICAL SUPPORT
TECHNICAL SERVICES GROUP
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
Initialisation to factory settings
Caution: When the factory settings have been made, all user setting data, including the
channel settings, are initialised. (The adjustments done in the adjustment process
mode are not initialised.) Keep this in mind when initialising these settings.
Enter the adjustment process mode.
• 
Bring the cursor on to [INDUSTRY INIT] on page 2/12.
• 
Use the [Volume +-] key to select a region from [AUTO/EURO/UK/ITALY/
FRANCE/RUSSIA] and press [ENTER]. “////////” appears and initialisation starts. After a
while, “SUCCESS—[regional code]” appears and the setting is complete.
Note: Never turn the power off during initialisation.
The background appears green when succeeded, and red when failed.
* Never turn off the power during the initialisation process.
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).
Electrical Adjustments
Version 1.1
Issue 06/2006
39
SHARP ELECTRONICS (UK) LTD
CE TECHNICAL SUPPORT
TECHNICAL SERVICES GROUP
10-1. Procedural 
steps
Enter the display process mode. - Adjust the common bias.
10-2.  Entering and exiting the display process mode
(1) While holding down the "VOL (+)" and "P (DOWN)" keys at once, plug in the AC power
cord to turn on the power. The letter <K> appears on the screen.
Note: <K> may appear only for a moment and the display for the next step may appear
if the above keys are pressed for too long.
(2) Next use the remote controller keys (VOL (+/–) or P (UP/DOWN). Multiple lines of red
characters appearing on the screen indicate that the set is now in the display process mode.
When you fail to enter this mode (the display is the same as normal startup), retry the
procedure.
(3) To exit the display process mode after the adjustment is done, unplug the AC power cord
to force off the power. (When the power is turned off with the remote controller, once unplug
the AC power cord and plug it in again.)
Caution: Use due care in handling the information described here lest the users should
know how to enter the display process mode. If the settings are tampered with in this
mode, unrecoverable system damage may result.
10-4. Common bias adjustment
Using the cursor (UP/DOWN) keys, move the cursor to "COM BIAS" on the display process
service page. With the cursor (LEFT/RIGHT) keys, select the setting. Now use the cursor
(UP/DOWN) again to vary the setting, and the test pattern appears onscreen. Make
adjustment to minimise the flicker around the centre of the screen.
Electrical Adjustments
Version 1.1
Issue 06/2006
40
SHARP ELECTRONICS (UK) LTD
CE TECHNICAL SUPPORT
TECHNICAL SERVICES GROUP
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