4 Replacement Procedures | 4.31 LCD unit/Touch panel/Digitizer |
CAUTION: Read the following instructions before handling the Digitizer.
Do not disassemble or modify the digitizer sensor unit; it may damage sensitive parts inside the digitizer sensor unit, and dusts or scratches may mar the device.
Be careful of sharp edges of the sensor board; it may cause injury on fingers or skin.
Do not exceed the absolute maximum rating values under the worst probable conditions caused by the variations in supply voltage, input voltage, parts constants, ambient temperature, etc.; it may damage the digitizer sensor unit.
Appropriate protection circuit shall be applied to each systems design.
Turn off the power before connecting or disconnecting the digitizer sensor unit. Scratching with sharp object may cause open circuit of the sensor board.
Do not use any water or chemicals except alcohols to clean the product.
The digitizer sensor unit shall be installed to the system tight by using the
Be sure to design the enclosure for the digitizer sensor unit so that pushing/bending/twisting forces are not applied to the digitizer sensor unit during and after the installation into the system.
Power supply lines shall be designed as follows. Power supplies shall always be turned on before the input signals are supplied to the digitizer sensor unit, and the input signals shall be disconnected before power supplies are turned off. If the sequence does not satisfy the specified conditions, it may cause the digitizer sensor unit to
Give some slack to the interface cable so that the connector will not permanently pulled after assembly.
Do not let any bare conductive metal such as LCD metal bezel contact digitizer sensor unit PCB directly. This may cause the digitizer sensor unit to malfunction.
Do not locate any object that emits magnetic flux such as a speaker magnet near the digitizer sensor unit, it may cause the digitizer sensor unit not to operate properly.
[CONFIDENTIAL] | PORTÉGÉ M780 Maintenance Manual |
