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11
1.3 Troubleshooting Guide for LCD
Symptom/Condition PROBABLE
CAUSE
CORRECTIVE ACTION
Air/cable setting is not
correct
Follow the set up procedures in LCD manual.
TV signal source is not
supplied.
- Check if the TV signal source is correctly supplied
to A/D PCB from external source.
- Make sure the cable is properly secure.
- If external TV signal is correct, try to connect the
coaxial cable directly to the internal connector in AD
PCB of Console to check whether the internal
cables are wrong or not.
75 ohm coaxial cable is bad.
Replace 75 ohm coaxial cable.
Snow and noise are scattering on LCD screen. Any picture is
not found even though channel-up button or channel-down
button is pressed.
A/D Board is damaged.
Replace A/D Board with new one.
LCD screen is uniformly white
Internal cable connection is
loose or disconnected.
Check if the connection between LCD screen and
A/D Board is tight.. In other word, LVDS cable
shown in picture.
When LCD power is turned on by
pressing TV on/off, “
VIDEO
”, “
S-VIDEO
”
or “
ANALOG
” appears temporarily and
then disappears on the left upper corner
of LCD screen.
TV mode is not set-up.
1) Whenever you press Volume down button, words
are displayed in following order on the left upper
corner of LCD screen.
“ANALOG”=>”VIDEO”=>”S-VIDEO”=>”TV”
2) Press the button until “
TV
” is displayed.
3) As soon as “
TV
” is displayed, snow and noise will
be scattering on LCD screen or any picture will be
captured.
LCD screen is dark
or black.
When LCD power is turned on by
pressing TV on/off, “
VIDEO
”, “
S-VIDEO
”
or “
ANALOG
” is
NOT
displayed on the
left upper corner of LCD screen.
LCD Power Supply has a
problem. Power Supply is
used for supplying 12 VDC
to LCD Overlay Bezel
Assembly.
Check if LCD Power supply is normally operated or
its LED lamp is turned on.
If LED is off,
z
replace Power Adapter.
If LED is on,
Содержание M990T
Страница 56: ...55 4 1 Cable Connection Block Diagram 1 MPU PCB LCD Type ...
Страница 57: ...56 2 MPU PCB DOT Type ...
Страница 58: ...57 3 A D BOARD ...
Страница 59: ...58 4 Lift Power BOARD 4 1 Supply Voltage 220 230VAC ...
Страница 60: ...59 4 2 Supply Voltage 100 120VAC USA Japan ...
Страница 84: ...83 Cable No Cable Name Cable Spec Remark CB20 S VIDEO Cable CB21 S AUDIO Cable CB22 LCD Power Supply Cable ...
Страница 87: ...86 A 1 M990T ...
Страница 90: ...89 B 1 MAIN BODY_FRONT A ...
Страница 91: ...90 B 2 MAIN BODY_FRONT B ...
Страница 93: ...92 C 1 MAIN BODY_REAR ...
Страница 95: ...94 D 1 OVERLAY BEZEL ASSEMBLY ...
Страница 98: ...97 E 1 CONSOLE ASSEMBLY ...
Страница 101: ...100 F 1 BOLT A ...
Страница 102: ...101 F 2 BOLT B ...
Страница 103: ...102 F 3 BOLT C ...
Страница 104: ...103 F 4 WASHER NUT ...
Страница 105: ...104 Ver 0 1 Feb 2007 ⓒ Motus Co Ltd All Rights reserved Unauthorized Reproduction and Distribution Prohibited By Law ...