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7. PROTECTOR OPERATION CHECKING
NO
ADJUSTMENT POINT
1
H, V PROTECTOR
2
OTHER PROTECTOR
8. A/V INPUT & OUTPUT CHECKING
NO
ADJUSTMENT POINT
1
VIDEO AND AUDIO
OUTPUT CHECK
VIDEO AND AUDIO
2
INPUT CHECK
COMPONENT IN
3
CHECK
ADJUSTMENT CONDITION / PROCEDURE
(1) Receive "Monoscope Pattern" signal.
(2) Connect output of Bias Box to D602 cathode
(C602 positive).
(3) Set voltage of Bias Box to 18V and make sure
the protector is not working.
(4) Set voltage of Bias Box to 28.5V. The tv will
four times in "ON" and "OFF"condition before
the protector ON and switch to standby mode.
(1) Once finish rectified Electrolytic Capacitor
short testing in + B line, check all possible
damaged components on +B line.
(Use random selected set for inspection)
ADJUSTMENT CONDITION / PROCEDURE
(1) Receive the "US 10 CH HALF Color Bar" signal.
(2) Terminate the Video output with a 75 ohm
impedance. (At signal is standard Color Bar
Y/C=1/1, 87.5% Mod.)
Make sure the output is as specified
(1.0 Vp-p ± 3 dB).
(3) Terminate the Audio output with a 47K ohm
impedance. (400 Hz 100% Mod. 47kW,
VOL Max.)
Make sure the O/ P is as specifie d
(1.2 Vp-p ± 3 dB).
(1) Using the INPUT key on the remote
controller, make sure that the modes change
in order of TV,INPUT1, INPUT2 & TV again and
the video & audio output are according to the
input terminal for each mode.
(2) Video cross-talk INPUT to TV checking:
a) When connect INPUT1 input, check TV also
b) When connect INPUT2 input, check TV also
(1) Connect YUV & Audio signal to Component
In terminal and Audio terminal.
(2) Using the INPUT key on the remote
controller, press it until the modes change to
COMPONENT, confirm output is appear.
(3) Audio source is share with INPUT1
3 – 20
WAVEFORM OR OTHERS
WAVEFORM OR OTHERS
Caution:
INPUT1 share with YUV. Therefore,
if YUV signal is connected to
Component In terminal, only
component is will detected.
:
21V-FS700S
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