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FRU replacement notices
This section contains notices for removal and replacement.
Read this section carefully before replacing any FRU.
LCD replacement notice
The TFT LCD for the computer contains many thin-film
transistors (TFTs). A small number of missing, discolored,
or lighted dots (on all the time) is characteristic of TFT
LCD technology, but excessive pixel problems can cause
viewing concerns. The LCD should be replaced if the
number of missing, discolored, or lighted dots in any
background is:
v
XGA : 8 or more bright dots, 8 or more dark dots, or a
total of 9 or more bright and dark dots.
Screw notices
This computer uses special nylon-coated screws with the
following characteristics:
v
They maintain tight connections.
v
They do not easily come loose, even with shock or
vibration.
v
They need additional force to tighten.
v
They should be used only once.
Do the following when you service this machine:
v
Keep the screw kit (P/N 08K6560) in your tool bag.
v
Always use new screws if you are instructed.
v
Use a torque screwdriver if you have one.
Loose screws can cause a reliability problem. The IBM
ThinkPad computer addresses this problem with
nylon-coated screws. Tighten screws as follows:
v
Plastic to plastic
Turn an additional
90 degrees
after the screw head
touches the surface of the plastic part:
v
Logic card to plastic
MT 2656, 2657, 2676
23
Summary of Contents for ThinkPad R30
Page 1: ...ThinkPad R30 R31 Hardware Maintenance Manual...
Page 4: ...iv ThinkPad R30 R31 HMM...
Page 73: ...1 Step Size Quantity Color Torque 1 M2 5 x L10 7 Black 3 2 kgf cm 2 MT 2656 2657 2676 67...
Page 89: ...MT 2656 2657 2676 83...
Page 119: ...1 Step Size Quantity Color Torque 1 M2 5 x L10 2 Black 3 2 kgf cm 2 3 4 MT 2656 2657 2676 113...
Page 141: ...MT 2656 2657 2676 135...
Page 143: ...3 Memory slot door 4 Docking connector MT 2656 2657 2676 137...
Page 181: ...1 2 Step Size Quantity Color Torque 2 M2 x L6 3 Silver 1 6 kgf cm 3 4 MT 2656 2657 2676 175...
Page 198: ...3 Memory slot door 4 Docking connector 192 ThinkPad R30 R31 HMM...