Panasonic TC-21FX30LA, Service Manual

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TC-21FX30LA/LP / TC-29FX30LA/LP
ADJUSTMENTS
ITEM / PREPARATION PROCEDURE
DEFLECTION CALIBRATION AND CONFIRMATION
(SERVICE MODE 1) 50Hz
(SERVICE MODE 3) 60Hz
Mode 4:3 - 21” and 29” CRT
1. Adjust the HELMHOLTZ device to local magnetic field.
2. Adjust the IMAGE menu to DINÂMIC NORMAL.
ADJUST AND CONFIRMATION
1) V-CENTER 50Hz adjustment.
1.
Supply a PHILIPS PAL-N signal
.
2. Adjust V-POS to align the pattern center with the CRT
center in vertical position.
2) V-AMP 50 Hz adjustment.
1.
Supply a PHILIPS PAL-N signal
.
2. Adjust V-AMP 50Hz so that the PHILIPS pattern circle
height has the same dimension of his width.
3) H-CENTER 50 Hz adjustment.
1.
Supply a PHILIPS PAL-N signal
.
2. Adjust H-POS to align the pattern center with the
CRTcenter in the horizontal position.
4) V-CENTER 60Hz adjustment.
1.
Supply a PHILIPS PAL-M signal
.
2. Adjust V-POS to align the pattern center with the CRT
center in vertical position.
5) V-AMP 60 Hz adjustment.
1.
Supply a PHILIPS PAL-M signal
.
2. Adjust V-AMP 60 Hz so that the PHILIPS pattern circle
height has the same dimension of his width.
6) H-CENTER 60 Hz adjustment.
1.
Supply a PHILIPS PAL-M signal
.
2. Adjust H-POS 60Hz to align the pattern center with
the CRTcenter in the horizontal position.
7) V-SYM adjustment.
1.
Supply a
CROSS HATCH signal.
2. Adjust V-SYM so that it distances them “a” and “b” are
the same.
8) V-LIN adjustment.
1.
Supply a
CROSS HATCH signal.
2. Adjust V-Lin so that it distances them “a”, “b”, “c” and
“d” are the same.
2,5 – 0,2 2,5 – 0,2
2,0 ± 0,1
2,0 ± 0,1 2,0 ± 0,1
2,0 ± 0,1
V-Sym a=b
a
b
V-Lin a = b = c = d
a
b
c
d
Height with monoscope pattern
Width with monoscope pattern
Monoscope
Pattern