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BOARD LEVEL
POLAVIEW 3000
SERVICE MANUAL
SERVICING THE DISPLAY UNIT
All maintenance of the unit shall be performed at a static-free workstation. Work in a dust free environment if possible,
and have access to a high pressure air blower to remove dust when assembling the unit.
The unit must be disconnected from the power supply and computer before opening.
Nominal time needed to perform each operation is shown in square brackets [ ].
Opening the unit [15 min]
Place the display facing down on a scratch-free surface. Remove the four mounting screws. Gently open the housing,
observing the cables that connect the elements in the top and bottom parts.
Replacing the controller card [15 min]
Disconnect the LCD cable (6) from the controller board (15), and the fan (7) from the controller board (15). Unscrew
the three mounting screws of the board and the two screws holding the computer connector (14).
Replace with a new card, reversing the above procedure.
Replacing the LCD module [15 min]
Disconnect the LCD cable (6) from the LCD module (4). Unscrew the four mounting screws. Gently lift off the
module. Beware that the top glass is held in place by the module.
If the LCD module is broken, soak up any spilled liquid and dispose of in ordinary litter. Use gloves. Wrap broken
glass thoroughly and wash your hands.
Replace the LCD module. Take care to remove any dust between the LCD module and the glass before reassembling.
Replacing the LCD module harness [15 min]
Disconnect the cable (6) from the LCD module (4) and the controller board (15).
Replace with a new cable, observing the correct polarity at both ends. At the controller board end, the cable will have
either a notch for polarization, or an arrow mark at pin 1.
Replacing the keyboard [15 min]
The keyboard (11) is mounted in the housing top. A circuit board holds four separate silicone rubber keys (10) in
place.
Disconnect the keyboard cable (12) from the keyboard (11). Unscrew the screws holding the circuit board. Carefully
lift off the board. Replace the rubber keys (10) and/or the circuit board as needed. Check key operation after
reassembling for smooth operation.
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