Lenovo ThinkPad X131e Chromebook Hardware Maintenance Manual - Page 19

Strategies for replacing FRUs, Strategy for replacing FRUs for GAV

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a. Non-ThinkPad devices b. Printer, mouse, and other external devices c. Battery pack d. External drive e. Memory module installed in slot b ( "1030 Memory modules" on page 30) f. PC Cards 4. Turn on the computer. 5. Determine whether the problem has been solved. 6. If the problem does not recur, reconnect the removed devices one at a time until you find the failing FRU. 7. If the problem remains, replace the following FRUs one at a time (do not replace a nondefective FRU): a. System board b. LCD assembly Strategies for replacing FRUs Use the following strategies to prevent unnecessary expense for replacing and servicing FRUs: • If you are instructed to replace a FRU but the replacement does not correct the problem, reinstall the original FRU before you continue. • Some computers have both a processor board and a system board. If you are instructed to replace either the processor board or the system board, and replacing one of them does not correct the problem, reinstall that board, and then replace the other one. • If an adapter or a device consists of more than one FRU, any of the FRUs might be the cause of the error. Before replacing the adapter or device, remove the FRUs, one by one, to see if the symptoms change. Replace only the FRU that changed the symptoms. Strategy for replacing FRUs for GAV General Announce Variant (GAV) This is a standard model (fixed configuration). GAVs are announced and offered to all customers. The MTM portion of the machine label is a 4-digit MT and 3-digit model, where model = a "fixed part number", not "CTO" (example: 1829-F1U). Also, PEW and eSupport will list these products under the same fixed model number. FRU identification for GAV products There are two information resources to identify which FRUs are used to support GAV products. These sources are PEW and eSupport. Using PEW • PEW is the primary source for identifying FRU part numbers and FRU descriptions for the key commodities for GAV products at an MT - serial number level. An example of key commodities are system boards, microprocessors, liquid crystal displays (LCDs), and memory modules. • GAVs are loaded in PEW under the 4-digit MT and 3-digit model, where model = a "fixed part number", for example: 1829-F1U. • PEW can be accessed at the following Web site: http://www.lenovo.com/support/site.wss/document.do?lndocid=LOOK-WARNTY Select Warranty lookup. Input the MT and the Serial number and the list of key commodities will be returned in the PEW record under COMPONENT INFORMATION. Using eSupport For key commodities (examples - system board, microprocessor, LCD, and memory module) Chapter 3. Important service information 13

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a.
Non-ThinkPad devices
b. Printer, mouse, and other external devices
c.
Battery pack
d. External drive
e.
Memory module installed in slot
b
( “1030 Memory modules” on page 30)
f.
PC Cards
4. Turn on the computer.
5. Determine whether the problem has been solved.
6. If the problem does not recur, reconnect the removed devices one at a time until you find the failing FRU.
7. If the problem remains, replace the following FRUs one at a time (do not replace a nondefective FRU):
a.
System board
b. LCD assembly
Strategies for replacing FRUs
Use the following strategies to prevent unnecessary expense for replacing and servicing FRUs:
•
If you are instructed to replace a FRU but the replacement does not correct the problem, reinstall the
original FRU before you continue.
•
Some computers have both a processor board and a system board. If you are instructed to replace either
the processor board or the system board, and replacing one of them does not correct the problem,
reinstall that board, and then replace the other one.
•
If an adapter or a device consists of more than one FRU, any of the FRUs might be the cause of the error.
Before replacing the adapter or device, remove the FRUs, one by one, to see if the symptoms change.
Replace only the FRU that changed the symptoms.
Strategy for replacing FRUs for GAV
General Announce Variant (GAV)
This is a standard model (fixed configuration). GAVs are announced and offered to all customers. The MTM
portion of the machine label is a 4-digit MT and 3-digit model, where model = a “fixed part number”, not
“CTO” (example: 1829-F1U). Also, PEW and eSupport will list these products under the same fixed model
number.
FRU identification for GAV products
There are two information resources to identify which FRUs are used to support GAV products. These
sources are PEW and eSupport.
Using PEW
•
PEW is the primary source for identifying FRU part numbers and FRU descriptions for the key
commodities for GAV products at an MT - serial number level. An example of key commodities are system
boards, microprocessors, liquid crystal displays (LCDs), and memory modules.
•
GAVs are loaded in PEW under the 4-digit MT and 3-digit model, where model = a “fixed part number”,
for example: 1829-F1U.
•
PEW can be accessed at the following Web site:
Select Warranty lookup. Input the MT and the Serial number and the list of key commodities will be
returned in the PEW record under COMPONENT INFORMATION.
Using eSupport
For key commodities (examples - system board, microprocessor, LCD, and memory module)
Chapter 3
.
Important service information
13