DW2U
3.12 525i Cb,Cr Clamp offset adjustment
?Process of Memory Initialize operation. Preparation
?A screen is be colored cyanwhen MEMORY INIT(1) Change signal format from 525(480)p to 525(480)i.
start.(See Fig.2)
?A screen is be colored greenwhen MEMORY INITAdjustment
finish normally. (1) Select ?RGB? of Service Adj. Menu.
?A screen is be colored redwhen MEMORY INITPress for over 2 seconds and have it perform
finish abnormally. automatic adjustment. When it?s completed, ?Auto
Adjusting? on the screen will be disappeared.
(6) Do not unplug from AC outlet until this operation
is complete and do not perform any key operation
either, after this operation each factory setting and100% White
all adjust mode data should reset to delivery settingsV2V1V1=1Vpp
automatically.BlackV2=0.7Vpp
(7) After Memory Initialize, it should be unplug AC cord.
Format : 525(480)i
Unplug and plug AC cord and then all settings and dataBlackWhite
are updated.
Fig.2 Adjustment signal for 525(480)i format
(8) When PDP turns ON , it will tune CH03 this is the
3.2 BRIGHTNESS CHECK
complete operation of Memory Initialize process.
Preparation
(1) Start checking 20 minutes or more after the power is
2.2 FACTORY AND SERVICE ADJUSTMENTS
turned ON.
The adjustment item that is affected by the memory(2) Receive the color bar signal.
initialize operation is shown below:
(3) The vertical incident illumination on the screen
* JIG. R/C FACTORY PRESET CODE:92 should be 20 lux or less.
MEMORY INITIALIZE and FACTORY PRESET(4) Picture Format is 16:9 standard mode.
ITEM MEMORY FACTORY RESETREMARKS
INITIALIZE(5) Select Day mode and reset.
RGB(480p) ADJUST DATA NOT INITIALIZE NOT INITIALIZE
WHITE BALANCE SETTINGNOT INITIALIZE NOT INITIALIZE
OTHER ADJUSTMENT MODE DATA INITIALIZENOT INITIALIZEChecking Procedure
FACTORY RESET ITEMINITIALIZEINITIALIZE
CHANNEL LISTINITIALIZEINITIALIZE(1) Check the brightness as below.
DW-2
Can be seen at blackA1*
Can be seen slightly from blackA2*
Note: If set black level is NG, readjust item Sub
Contrast adj.
Measuring Conditions
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(1) At the signal electric field strength 75? dBm, the0
Note: Perform pre heat-run for more than 20 min. before
specification mentioned above should be satisfied.
adjusting.
(2) At the input electric field 46-106dB , there should be
3.1 Sub-Contrast & Clamp Offset Adjustment
no abnormality.
Preparation for adjustment
* From color bar pattern below.
(1) Pre-heat at least 2 min. before the Final Adjust.
(2) Recall user menu and select ?Video?
Ž?Picture Mode?
Ž
?Day(Dynamic)?
Ž?Reset?.
(3) Receive following signal into input3 or input4(Comp) input.
7 step gray scale
Adjustment procedureA7A6A5A4A3 A2A1
3.11 525p Sub-Contrast, Y/Cb/Cr Clamp offset adjustment
(1) Receive following 525(480)p Signal.
100% White
V2V1V1=1VppWhite 100%
BlackV2=0.7Vpp
Format : 525(480)pColor Bar Signal
BlackWhite
A4 has tolerance.
Adjustment signal for 525(480)p format
A4 can be between black and
(2) Go into Service Adj. Menu and select ?RGB? . Slightly from black.
(3)Pressfor over 2 seconds and have it perform
automatic adjustment. When it?s completed, ?Auto
Adjusting? on the screen will be disappeared.
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