Model No: CT-21TF9A_21TF9C_21TF9CP_21TF9CP(IKD)_21TF9CP(SKD)_21TF9CP(M)_21TF9N_21TF9R
Version 1.0
11
10.
CONVERGENCE ADJUSTMENT
10.1. Receive a dotted pattern. Set the TV receiver dynamic.
10.2. Loose the convergence magnet clamper and align red with blue dots at the
center of the screen by rotating (R, B) static convergence magnets.
10.3. Align Red/Blue with green dots at the center of the screen by rotating (RB-G)
static convergence magnet.
10.4. Remove the DY wedges and slightly tilt the deflection yoke horizontally and
vertically to obtain the good overall convergence. Fix them after the good
overall convergence is obtained.
10.5. Fix the convergence magnets by turning the clamper.
10.6. If purity error is found, follow “PURITY ADJUSTMENT” instructions.
Purity Magnet
RB-G RB
Magnet Clamper
Static Magnet
(C) FINAL INSPECTION AND ELECTRICAL FUNCTIONAL CHECK
1.
CHECKING THE ELECTRICAL FUNCTION:-
1.1.
Connect the power cord and connect the signal to RF input.
1.2.
Check the power supply whether OK or not. Switch on the TV set and the
LED is on. Switch off the TV screen and should not have CRT spot within 3
sec.
1.3.
Receive the channel 1 for monoscope pattern to check the picture focus and
the round circle should not be distorted. The centre position, and VOS
line/size are within spec. Check the brightness, contrast and colour condition.
Check the convergence, picture must be clear, focus OK and white balance
are OK. Also check the complete screen picture quality. High voltage condi-
tion OK and the Screen picture must be OK.
1.4.
Check all the functional keys must be working well.
1.5.
Receive colour pattern signal and the system colour. (PAL/SECAM/NTSC).
Check the power main on/off switch, brightness, volume, colour, contrast and
tint. The picture quality must not have colour noise, unbalance size and dis-
torted condition.
1.6.
Check the sound quality standards, Volume up/down are OK to spec, and
sound output. Ensure the sound output is not distorted and noisy. No inter-
ference for DK/BG/I/M.
Summary of Contents for CT-21TF9
Page 14: ...Chassis 3Y01 150V 260V ...
