21H-FV5RU
SCREEN, WHITE BALANCE, SUB-BRIGHTNESS & SUB-CONTRAST (2 ) ADJUSTMENTNTSC CHROMA ADJUSTMENT
No. Adjustment pointAdjustment condition/procedureWaveform or othersNo. Adjustment pointAdjustment condition/procedureWaveform or others
2
3SUB-1) In window pattern signal condition.1SUB-TINT (IC1) Receive the "NTSC3.58 Colour Bar" signal thru
BRIGHTNESS2) Using Minolta Colour Analyzer CA-100, let the gunBUS CON-AV in.
(to be donepoint at Dark White position (as attach drawing),TROL)2) Connect the oscilloscope to B-Amp Transistor
after screen,adjust V06 Bus data until LUMINANCE Y = 3 ? 0.5Base (TP853 ).
white balancecd/m2.E Range: 100mV/Div (AC)(Probe 10:1)Use
adj)E Sweep time : 10 msec/Div
(I2C BUS3) In Service mode, go to V07, then press R/C Y-
CONTROL)mute(Hex E4) or FLASHBACK ke.y
4) Call the "V07" data in service mode. Adjust theW Y Cy G Mg R B
Dark White"V07" bus data to obtain the waveform shown as
Figure 1-1.Fig. 1-1
WINDOW PATTERN SIGNAL
5) Disable Y-Mute by pressing key(Hex E4) or
FLASHBACK , then clear the SERVICE mode.
4SUB-1) In Window Pattern Signal condition.
SECAM CHROMA ADJUSTMENT
CONTRAST2) Using Minolta Colour Analyzer CA-100, let the gun
(to be donepoint at White position (as attach drawing), adjustNo. Adjustment pointAdjustment condition/procedureWaveform or others
after screen,V04 Bus data until LUMINANCE Y = 200 ? 10 cd/
white balancem2.1SECAM1) Receive OSECAM COLOUR BAR� signal.
adj,BLACK LEVEL2) In the service mode, select service data V14.
R-Y/B-Y3) Connect oscilloscope to TP 801.
sub-bright-2
(IC BUSE Range: 20mV/Div (AC)(Use 10:1 probe)
ness adj)
(I2C BUSCONTROL)E Sweep time : 20 msec/Div
CONTROL)White4) Adjust the V14 so that the offset of R-Y to mini-Offset
Fig 2-1(a)
mum, shown in Fig 2-1(b), it means adjust the
WINDOW PATTERN SIGNAL
offset of between No signal line and Signal line to
minimum.
125) In the service mode, select service data V15.
5 Beam Current 1) Receive the OMonoscope Pattern� signal.6) Connect oscilloscope to TP 801.
Check2) Press R/C to set Picture NORMAL condition.E Range: 20mV/Div (AC)(Use 10:1 probe)
3) Connect the DC miliammeter between TP 603E Sweep time : 20 msec/Div
( + ) & TP 602 ( - ).7) Adjust the V15 so that the offset of B-Y to mini-Fig 2-1(b)
(Full Scale: 3mA Range)mum, shown in Fig 2-2(b), it means adjust the
4) Beam current must be within 1000 ? 100mA.offset of between No signal line and Signal line to
minimum.
Offset
Fig 2-2(a)
PAL CHROMA ADJUSTMENT
No. Adjustment pointAdjustment condition/procedureWaveform or others
1SUB COLOUR1) Receive the OPAL Colour Bar� signal.
2
(IC BUS2) Press R/C to set Picture Normal condition. Cy GB
CONTROL)3) Connect the oscilloscope to R-Amp Transistor
(to be doneBase(TP 851).Fig 2-2(b)
after sub-Range :100 mV/Div (AC)
picture, sub-(Using 10:1 Probe)
tint adj)Sweep Time : 10 m sec/Div
4) Using the R/C call V05 in SERVICE mode. Ad-
75% W Y 100% W Mg R
just V05 bus data, so that the 75% White & Red
portions of PAL Colour Bar be at the same level
shown as Fig 1-1.Fig. 1-1
5) Clear the SERVICE mode.
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