Lcd Touch Panel; Replacement Of Backlight On Lcd Touch Panel; How To Remove Main Unit Top Cover; Sample Arm Unit - Hitachi 902 Service Manual

14.2.1

LCD Touch Panel

(1) Open the front covers L and R and remove the concealing plate at the top front.
(2) Reaching through the opening provided by removing the above plate, apply a blade-
edged screwdriver to the claw holding the LCD touch panel from the rear of the main unit
cover, and lift up to remove the LCD touch panel.
(3) Detach the power terminal and signal cable connectors from the rear of the LCD touch
panel, and remove the touch panel.
< Replacement of backlight on LCD touch panel >
(1) Remove the LCD touch panel.
(2) Open the screw-fastened lid on the 24 V DC terminals at the rear of LCD touch panel.
(3) Detach connector CN2 at the rear of the opening in the lid, remove the backlight and
replace it.
14.2.2

How to Remove Main Unit Top Cover

(1) Remove arm covers A, B, C, D and E and the protective plate.
(2) Remove LCD touch panel and the printer unit.
(3) Detach the LED board wiring connector from the main unit cover.
(4) Lift up and remove the main unit cover.
14.2.3

Sample Arm Unit

(1) Remove the main unit cover.
(2) Detach the sample arm tube from the joint of the seesaw mechanism.
(3) Detach connectors J540 and J541.
(4) Remove the grounding wire.
(5) Remove the retaining screws and detach the unit.
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