21GT-22
B
MgR
G
Fig. 1-1
Cy
Y100%W
W
75%
.
Fig. 1-1
8-2
sec/div.
m
till the horizontal line in the center of monoscope is just at the position where the blanking starts.till the picture is centered.key to set overscan of 9.5% typical. Adjustment Spec 9.5% range +1% -0%.to center the picture horizontal.adjust V-Slope, V-Shift and V-Amp to makesure adjustment is in acceptable Ring-Shaped.ing.PAL CHROMA ADJUSTMENTRed cathode(D882 Chathode) for 21" (Normal Neck). E Range: 20 V/div. (AC)(Using 10:1 probe) E Sweep time: 10 mode. Adjust SUB COLOUR bus data, so that the 75% White & Red portions of PAL Color Bar be at the same level shown as COL obtained in 4.
1.Receive Monoscope Pattern Signal. 2.Call the "V-LIN" mode. 3.Increase or decrease "V-LIN" by Volume key1.Call the "V-CENT" mode. 2. Increase or decrease "V-CENT" by Volume key1.Call the "V-AMP" mode. 2.Increase or decrease "V - AMP" by Volume1.Call the "H-CENT" mode. 2.Increase or decrease "H-CENT" by Volume key1. SET DATA TO 20 * Check the E-5 CH Monoscope Pattern then re-1. SET DATA TO 201.Receive the "Monoscope Pattern" signal. 2.Press R/C to set Picture NORMAL condition. 3.Adjust the focus control to get the best focus-1.Receive the "PAL Color Bar" signal. 2.Press R/C to set Picture Normal condition. 3.Connect the oscilloscope to4.Using the R/C call "SUB COL" in SERVICE5.Add another 6 steps up into the value of SUB-6.Clear the SERVICE Mode.
C
2
2C BUS
2C BUS2C BUS2C BUS
V-SLOPE (IBUS CON- TROL)V-SHIFT-50 (ICONTROL)V-AMP50 (ICONTROL)H-SHIFT (50) (H-CENTER)S-CORREC- TION (ICONTROL)SUB- SHARPNESS(ICONTROL)
1234561Focus1SUB COLOUR
HORIZONTAL AND VERTICAL DEFLECTION LOOP ADJUSTMENTNO.Adjustment partAdjusting procedure and conditionsWaveform and othersNO.Adjustment partAdjusting procedure and conditionsWaveform and others
RED = TP47R,
tY : 0.275
DRI-BW="DRI-BS"-7 DRI-GC="DRI-GS"-7 DRI-RC=25
LOWHIGH
3.2Vdc0°KX : 0.272by Volume key.°K DRI-GW="DRI-GS"-7
as beside procedure.line appear and make sure the col- our appear whether red, green or biue.test points as below which is based on colour appear at (2) GREEN =TP47G, BLUE = TP47Bof signal reach 3.2Vdc.1 2 3 4 51 2 3 4 5
*Alternative Procedure (1) Step (1), (2), (3) and (4) are same(2) Then continue adjust until retrace(3) Connect the oscilloscope to related(4) Then adjust Screen VR until the tip# 12300(MINOLTA COLOUR ANALYZER CA- 100) *Note: Above Data can be UP/DOWN21"10cd/m2120cd/m2* 12300
1Line 3 is one step (data) brighter than line 22
°K (
A.
m
A.
m
100
?
A.
m8-1
K Condition)
°
ing up the unit for 30 minutes or longer with a beam current over 700
DRI-RW = 32 (FIXED), DRI-RS = 32 (FIXED) DRI-BC = "DRI-BS" (For 12300
RS/RW/RC, DRI-GS/GW/GC, DRI-BS/BW/BC, CUT-R and CUT-G must be INITIAL DATA.room.NO VIDEO signal.screen variable resistor until colour raster suddenly on and off (AKB start function).until screen retrace line cut off (Not Raster)Must confirm the AKB function in set before continue the next adjustment.hatch pattern with 5 black level windows)the line 1and 2 have the same darkness wherelse line 3 is one step (data) brighter than line 2. Finally data minus 1 to make line 1, 2, and 3 are in same level (darkness).TP603 (+).BS data to have a colour temperature of 12300white ). * Note .set BRIGHTNESS Y by generator, to **10 cd/m2 (MINOLTA CA-100) by reducing LUMINATE Y sig- nal.perature #. Then go back NORMAL mode (HIGH BRIGHT**) to check colour temperature. If out of range, back to 1.after finishing DRI-BS and DRI-GS DATA ADJUST- MENT.TP602 (�). (Full Scale: 3 mA Range)Beam current must be within1100
Remark 1.Before CRT cutoff adjustment, SUB-BRIGHT, DRI-2. CRT Cutoff adjustment must be done inside a dark1.Switch TV to VIDEO mode,BLUE BACK OFF, with2.Press R/C to set Picture Normal condition. 3. First, off the screen by adjust screen variable resistor. *4. Next, checking AKB circuit function by slowly increase5. Then continue adjust until retrace line appear. 6. Finally, slowly decrease the screen variable resistorNote :1.Call " SUB-BRI" in service mode. (Receive Cross-2.Adjust the " SUB BRIGHT " bus data in order that1.Receive the "WHITE" pattern with BURST signal. 2.Press R/C to set Picture NORMAL condition. 3.Connect the DC miliammeter between TP602 (-)4.Check Beam current should be around 1100 5.Set it to service mode and adjust the DRI-GS, & DRI-6.Receive "WHITE" pattern, WITH BURST signal, and7.Adjust "CUT-R" & "CUT-G" to get desired colour tem- Note:This adjustment must be done after warm-* Adjust DRI-GC/GW, DRI-BC/BW as following DATA,1.Receive the "Monoscope Pattern" signal. 2.Press R/C to set Picture NORMAL condition. 3.Connect the DC miliammeter between TP603 (+) &4.
2C BUS2C BUS2C BUS
CRT CUTOFF ADJUSTMENT (I CONTROL)BRIGHTNESS ADJUSTMENT (ICONTROL)BALANCE SERVICE MODE ADJ. (ICONTROL)beam check
12SUB-3WHITE4Max.
CRT CUT-OFF, BACKGROUND AND SUB-CONTRAST ADJUSTMENTNO.Adjustment partAdjusting procedure and conditionsWaveform and others
8 |
ACEC
