6. HORIZONTAL, VERTICAL, DEFLECTION LOOP and FOCUS ADJUSTMENT
No.Adjustment pointAdjustment procedure/conditionsWaveform and others
1) Receive Monoscope Pattern Signal (PAL 50 Hz)
1H-SHIFT
22) Choose the service data V13.
(ICBUS
3) Adjust the V13 bus data to have a balance position
CONTROL)
to spec of A=B (as attach drawing)AB
(to be done
4) If cannot make it to A=B, adjust from the best point
after purity
so that B slightly smaller than A.
adj)
2V-SHIFT1) Receive Monoscope Pattern Signal (PAL 50 Hz)Figure:
2AB
(ICBUS2) Choose the service data V12.
CONTROL)3) Adjust V12 bus data to have a most acceptable
(to be donevertical position, the monoscope pattern should
after puritybe Balance in vertical position.
adj)Note: B line (Monoscope middle line) mustOKOKNG
same or nearest higher position to the A
mark (Tube middle mark),refer to the attach
drawing.
1) Receive Monoscope Pattern Signal (PAL 50 Hz)
3V-SIZE
22) Choose the service data V11.
(I CBUS
3) Adjust V11 bus data until the overscan become
CONTROL)
10 ? 1.5 %
(to be done
Caution1: Pls aging TV more than 10 minutes
after purity,
before adjustment.
V-shift adj)
Caution2: for H-shift & V-shift & V-size adj, after
adj pls switch to Monoscope pattern
signal (NTSC 60 Hz) to confirm all
position are the same.
SUB-1) Confirm Service data V08 is 43.
4
SHARPNESS
5Focus1) Receive the "Monoscope Pattern" signal.
2) Press R/C to set Picture NORMAL condition.
3) Adjust the focus control to get the best focusing.
7. PAL CHROMA ADJUSTMENT
No.Adjustment pointAdjustment procedure/conditionsWaveform and others
1SUB COLOUR1) Receive the ?PAL 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).
after sub-Range :100mV/Div (AC)
picture, sub-(Using 10:1 Probe)
tint adj)Sweep Time : 10 ? 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.
3 - 20 |
ACEC
SHARP
