21S-FX10L
5 – 8
PROTECTOR OPERATION CHECKING
NO
ADJUSTMENT POINT
W
AVEFORM OR OTHERS
1 H, V PROTECTOR
(1) Receive US 4 CH
LION HEAD Sign
al (NTSC 60 Hz).
(2) Connect outputofBiasBoxto
D602 cathode (C602 posit
ive).
(3) Set voltage of Bias Box to 18V and make sure the protectorisnot working.
(4) Set voltage of Bias Box to
2
8.5V.Makesur
e the protector isfunctioned, horizontal oscilation stop
and picture disappear.
(5)PullouttheACcordatle
ast 4 second before plugging in again (to make sure
-COM has
been reset) for the set to recover from protector mode
2 OTHER PROTECTOR (1) Once finish rectified Electrolytic Capacitor short testing in+Bline,
check all possible damaged components on +B line.
(Use random selected set
for inspection)
A/V
INPUT & OUTPUT CHECKING
NO
ADJUSTMENT POINT
WAVEFORM OR OTHERS
1 VIDEO AND AUDIO
(1) Receive the "US 10 CH HALF Color Bar" signal.
OUTPUT CHECK (2) Terminate the Video output with a 75 ohm
i
mpedance. NOTE: When FAO is set to ON, SPEAKER will
( At signal is standard Color Bar Y/C=1/1, 87.5% Mod.)
automatically turn OFF. TV volume control
Make sure the output is as specified
(1.0Vp-p±3dB). is disabled
(3) Terminate the Audio output with a 47K ohm impedance.
( 400 Hz 100 % M
od. 47 k , VOL Max. )
(a)Goto feature menu, set the FAO to OFF
Make sure the O/P is as specified (2.5 Vp-p ± 0.5Vp-p).
(b)Gotofeat
ure menu, set the FAO t
oON
Make sure the O/P is as specified (1.2 Vp-p ± 0.3Vp-p).
2 VIDEO
AND AUDIO
(
1) Using the INPUT key on the remote controller, make sure that the modes change in order of
INPUT CHECK TV, COMPONENT, INPUT1,INPUT2 & TV again and the video & audio output are according
t
o the input terminal for each mode.
(2) Video cross-talk INPUT t
oTV
checking :
a) When connect INPUT1 input, check TV also
b) When connect INPUT2 input, check TV also
3 COMPONENT IN
(1) Connect YUV & Audio signal t
o Component In terminal and Audio terminal.
CHECK
(2) Using the INPUT key on the remote controller, press it until the modes change to COMPONENT,
confirm output is appear.
ADJUSTMENT CONDITION / PROCEDURE
ADJUSTMENT CONDITION / PROCEDURE
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