Toshiba PORTEGE M400 - Manual (Page 309)

4.26 Digitizer 4 Replacement Procedures
Do not hold, press and rub the TAB because it may result to break the TAB and cause the
display function failure.
Make sure to put the LCD module on the flat place. If the LCD module is put on the
uneven place, it may result to break the TAB, make scratch on the B/L or polarization
sheet and cause the display function failure.
PORTEGE M400 Maintenance Manual (960-541) [CONFIDENTIAL] 4-71