Backlight - Mitsubishi Electric M700VS Series Setup Manual

12.1.3 Backlight

Display unit type
FCU7-DU120-11
FCU7-DU140-11
FCU7-DU140-31
Backlight life ... 50,000 hours (Duration of time until luminance drops to 50% of the initial value.)
The life is estimated on the assumption that it is used under 25 ℃ environment. Keep in mind that the value above is not
a guaranteed value.
[Replacement procedures]
Always replace the backlight for LCD panel with the control unit (machine) power turned OFF.
(1) Check that the machine power is turned OFF. (If the power is not OFF, turn it OFF.)
(2) Disconnect the backlight connector from the backlight inverter (one for top).
(3) Disconnect the MENUKEY connector.
(4) Remove the escutcheon fixing screws (at 4 places) and take the escutcheon off.
(5) Pull out the backlight installed on the left side of the LCD panel. (The backlights have locking claws on the
front. Hold these claws down while pulling the backlight out.)
(6) Insert the new backlight into the upper and lower sections at the left end of the LCD panel. (Press in until the
locking claws click.)
(7) Mount the escutcheon with 4 fixing screws (one each for 4 sections).
(8) Connect the backlight connector to the backlight inverter.
(9) Confirm that all the cables are correctly connected and close the electric cabinet door.
(10) Connect the MENUKEY connector.
[Precautions for using LCD panel]
(1) Response time, brightness and color may differ depending on the ambient temperature.
(2) Brightness nonuniformity, flickers and streaks may be observed on LCD display depending on the display
contents.
(3) Because cold cathode-tube is used for LCD display, optical characteristics (brightness nonuniformity and
display) change according to the operation time. (Especially in low temperature.)
(4) Screen display color may differ depending on the angle to view it.
1. Do not replace the backlight while the power is ON.
2. Dispose the spent backlight according to the local laws.
3. Do not touch the backlight while the power is ON. Failure to observe this could result in
electric shocks due to high voltage.
CAUTION
4. Do not touch the backlight while the LCD panel is in use. Failure to observe this could result
in burns.
5. Do not apply impact or pressure on the LCD panel or backlight. Failure to observe this
could result in breakage as they are made of glass.
Screen size TFT-LCD type
8.4-type NL6448BC21-09
10.4-type NL6448BC33-74N
M700VS Series Setup Manual
12.1 Durable Parts
Backlight type Inverter type
84LHS06 84PW031
104LHS52 104PW161
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