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Sharp PA-W1400 Service Manual page 20

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(Description on the tilt mechanism)
The tilt mechanism functions to set the LCD unit to a desired angle.
LCD unit @ is liked with arm @ (the link shaft) and a friction is
applied to arm @.
@ Upper cabinet
@® Lop unit
eS
@ Friction spring
IFig. 5-5]
(Descriptions on the backlight and the photoconductive
plate)
+ The PAW1410 employs the edge-light system backlight. The light
emitted from CCFT (cool cathode ray tube) © is radiated on the
'edge of the photoconductive plate to illuminate the LCD evenly.
LCD PWB unit
Photoconductive plate
IFig. 5-6]
Bent portion
IFig. 5-7]
Note: Be careful to the photoconductive plate mounting direction.
'The transparent surface must come onto the CCFT, and the
notched surface must come onto the stay angle.
* The CCFT (cool cathode ray tube) is driven and controlled by the
invertor unit.
PA-W1400
(Note for disassembly/assembly)
a.
b.
c.
4.
(1)
(2)
(3)
(4)
<A
(1)
(2)
(3)
(4)
Before servicing work, be sure to turn off the power source.
Be careful not to allow foreign materials to enter the unit.
Cover the photoconductive plate with the correction sheet to in-
hibit leakage of light.
| . Be careful to the mounting directions of the stay angle and the
photoconductive plate. (refer to Fig. 5-5 and Fig. 5-6.)
fragile.
Lift the keyboard in the arrow direction and remove it.
ssembly procedure>
Set the dent portion of the keyboard to fixing pawl @).
Two ribs are provided at the lower rear side of the board. Insert
the ribs into holes © and ©.
Confirm insertion of the key angle projection.
a.
5.
(1)
(2)
(3)
(4)
6)
IFig. 5-8]
(Note for disassembly/assembly)
When the board is hanged on fixing pawl @, do not rotate in
direction of ®.
. Do not bend fixing pawl @ excessively.
. The flat cable terminal must not be folded.
| . Check that key angle @ projection and section © of ke yboard
unit D.
Mechanical unit (Refer to Fig. 5-9.)
Remove the upper cabinet. (For removal procedure, refer to
(5}1.)
Remove keyboard unit (. (For removal procedure, refer to [5}-
4)
Remove two screws @ which are fixing mechanical unit @ to
lower cabinet ©.
Disconnect cable connectors @, ©, D, and ® (wiiéch are
connected with main PWB @) from the mechanical unit.
Remove mechanical unit @.

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