Acer Chromebook CB5-132T User manual

Acer Chromebook CB5-132T / C738T
LIFECYCLE EXTENSION
GUIDE

i
Self-Repair . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
Disassembly Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-25
FRU (Field Replaceable Unit) List . . . . . . . . . . . . . . . . . . . . . . . . . . 1-29
Check for updates yourself. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-33
Factory reset your Chromebook. . . . . . . . . . . . . . . . . . . . . . . . . . . 1-34

Self-Repair 1-1
Self-Repair
This chapter highlights the limited self-repair capabilities of the product.
Prior performing self-repair, familiarize yourself with the Safety Guidelines and
Recommended Equipment sections first as described in the chapter "Disassembly
Procedures".
Depending on model, the following key components are eligible for self-repair (if
applicable);
Battery pack
HDD / SSD module
DIMM module(s)
WLAN module
LTE module
If a particular key component is listed and thus would be eligible for self-repair, but is
not described in the "Disassembly Procedures" section, then this component is either not
present on the respective model, or it is present but embedded on the motherboard and
therefore not eligible for self-repair.
NOTE:
NOTE:
Do not attempt to replace other components than those listed above.
NOTE:
NOTE:
For replacement parts, always use only Acer certified components in order to
safeguard quality, optimum system performance, stability and reliability of the
product.
NOTE:
NOTE:
Any damage to the product that occur during self-repair, or which has occurred as
a result of a careless or unsuccessful self-repair attempt, is not covered by the
standard product warranty.
Software Recovery 0
This product has embedded software recovery tools which can be used to either perform
a partial or full software recovery, but also to create a Factory Default recovery media.
For more information about the software recovery options, how to perform a software
recovery or creating a Factory Default recovery media, please refer to the chapter
"Recovery" which is available in the User Manual of the product.
NOTE:
NOTE:
In the event of not being able to create a Factory Default recovery media, it is
possible to obtain a copy of the recovery media through Acer Customer Service
(http://www.acer.com/support)
This is not a free of charge service.

1-2 Disassembly Procedures
Disassembly Procedures
Safety Guidelines 0
This chapter contains step by step procedures on how to remove and de-install
components from the computer. Use the following safety guidelines to ensure your
personal safety. Each procedure included in this chapter assumes that you are preparing
your computer for recycling and disposal. By performing any of these procedures you
acknowledge that any remaining warranty applicable to your computer will be voided.
Before you start any of the procedures in this chapter, make sure to read the following
safety guidelines and the respective instructions within the chapter.
CAUTION!
Turn off your computer and disconnect all power sources before opening the
computer cover or panels.
To avoid electrostatic discharge, ground yourself by using a wrist grounding strap
or by periodically touching an unpainted metal surface at the same time as
touching a connector on the back of the computer.
Take off any metal objects on your arms or fingers such as bracelets, rings or
watches and make sure your hands are completely dry. Even if your unit is
unplugged, there may still be some remaining electric charge.
If a component does not come out easily, do not forcefully remove it. Instead,
check that you are removing it correctly and that no wires or other parts are in the
way.
When you disconnect a cable, pull on its connector or on its pull-tab, not on the
cable itself. Some cables have connectors with locking tabs; if you are
disconnecting this type of cable, press in on the locking tabs before you disconnect
the cable.
Recommended Equipment 0
The following equipment are recommended to do the following maintenance
procedures:
Wrist grounding strap and conductive mat
Philips screwdriver
Plastic tweezers
Flat plastic pry

Disassembly Procedures 1-3
WEEE Annex VII Component 0
These components are classified as requiring selective treatment:
I/O board
Battery pack
WLAN module
Touchpad module
Mainboard
LCD panel

1-4 Disassembly Procedures
Pre-disassembly Instructions 0
Do the following prior to starting any maintenance procedures:
1. Place the system on a stable work surface.
2. Remove AC adapter (A) from the system and peripherals (Figure 1-1).
3. Remove the SD card from the SD card slot (B) (Figure 1-1).
4. Remove all cables from system.
Figure 1-1. AC Adapter Outlet & SD Card Removal
NOTE:
NOTE:
Make sure the system is completely powered off.
AB

Disassembly Procedures 1-5
Base Cover Removal 0
1. Place the computer on a flat surface, the bottom side is up.
2. Remove eleven (11) screws from the base cover (Figure 1-2).
Figure 1-2. Base Cover Screw Location
3. Connect the AC adapter to the system.
4. Flip the system over and then open the LCD module to a 90-degree angle, the system
will automatically start up (Figure 1-3).
Figure 1-3. Battery Cut-off

1-6 Disassembly Procedures
5. Press the power key (A) and the reload key (B) to shut off the system. Once you see
the power LED turn off (C), disconnect the AC adapter immediately (Figure 1-4).
Figure 1-4. Battery Cut-off
IMPORTANT:
+
Make sure the display is dark, the system is completely powered off and
the AC adapter is removed from the system.
6. Close the LCD module and carefully flip the system over.
7. Carefully pry up the base cover starting from the right side (Figure 1-5).
Figure 1-5. Base Cover Removal
A
B
C

Disassembly Procedures 1-7
8. Carefully flip the left side of the base cover away from the system as shown in
Figure 1-6.
9. Disconnect the battery cable (A) from the mainboard connector (Figure 1-6).
10. Disconnect the IO board FFC (B) from the mainboard connector and gently peel it
away from the top assembly (Figure 1-6).
CAUTION:
!
The IO Board FFC (Flexible Flat Cable) can be damaged if removed while the
mainboard connector is locked.
Figure 1-6. Base Cover Removal
11. Remove the base cover (Figure 1-7).
Figure 1-7. Base Cover Removal
A
B

1-8 Disassembly Procedures
I/O Board Removal 0
Prerequisite:
Base Cover Removal
1. Find the USB board (C) on the base cover (Figure 1-8).
2. Disconnect the IO Board FFC (A) from the IO Board connecter (B) and remove it.
3. Remove the one (1) screw (D) securing the IO board in place (Figure 1-8).
Figure 1-8. IO Board Screw Location
4. Remove the USB board from the base cover (Figure 1-9).
Figure 1-9. IO Board Removal
D
A
C
B
A
E
B
WEEE Annex VII Component:
I/O board

Disassembly Procedures 1-9
CAUTION:
!
The IO board FFC (Flexible Falt Cable) can be damaged if removed while the
IO board connector is locked.

1-10 Disassembly Procedures
Battery Pack Removal 0
Prerequisite:
Base Cover Removal
1. Remove two (2) screws (A) securing the battery pack in place (Figure 1-10).
Figure 1-10. Battery Screw Location
2. Lift up the top edge of the battery pack to remove it from the system (Figure 1-11).
Figure 1-11. Battery Pack Removal
A
WEEE Annex VII component: Battery
A
B

Disassembly Procedures 1-11
IMPORTANT:
+
Follow local regulations for battery disposal.

1-12 Disassembly Procedures
WLAN (Wireless Local Area Network) Module Removal 0
Prerequisite:
Battery Pack Removal
1. Find the WLAN module (A) on the top assembly (Figure 1-12).
Figure 1-12. Component Location
2. Disconnect WLAN antennas (B) connected to the WLAN card (Figure 1-13).
3. Remove one (1) screw (C) securing the WLAN module in place (Figure 1-13).
Figure 1-13. WLAN Pins & Screw Location
A
C
D
B
EF
C
B

Disassembly Procedures 1-13
4. Remove the WLAN module (A) from the mainboard connector (D) (Figure 1-14).
Figure 1-14. WLAN Module Removal
A
D
WEEE Annex VII Component:
WLAN module

1-14 Disassembly Procedures
LCD Module Removal 0
Prerequisite:
Battery Pack Removal
1. Disconnect the WLAN antennas (A) and remove the antennas from the cable guides
as shown in Figure 1-12.
2. Disconnect the eDP cable (B) from the mainboard connector (C) (Figure 1-15).
3. Disconnect the G-sensor control cable (D) from the mainboard (Figure 1-15).
Figure 1-15. WLAN Antenna & eDP Cable Location
4. Place the system on a flat surface and open the LCD module (D) to a 120 degree
angle as shown in Figure 1-16.
5. Remove four (4) screws (E) securing the LCD module (D) in place (Figure 1-16).
Figure 1-16. LCD Module Screw Location
AB
C
D
D
E
E

Disassembly Procedures 1-15
6. Lift the LCD module (D) away from the top assembly (Figure 1-17).
Figure 1-17. LCD Module Removal
CAUTION:
!
Make sure all cables and antennas are moved away from the device to avoid
damage during removal.
D

1-16 Disassembly Procedures
Touchpad Module Removal 0
Prerequisite:
Battery Pack Removal
1. Find the touchpad module (D) on the top assembly. Refer to Figure 1-12.
2. Disconnect the touchpad FFC (A) from the mainboard connector (B) (Figure 1-18).
3. Disconnect the touchpad FFC (A) from the touchpad connector (C) (Figure 1-18).
4. Remove the touchpad FFC (A) from the system (Figure 1-18).
5. Remove three (3) screws (E) securing the touchpad module in place (Figure 1-18).
Figure 1-18. Touchpad FFC and Screw Location
A
B
C
E

Disassembly Procedures 1-17
6. Peel back the the touchpad tape (F) covering the touchpad module (Figure 1-19).
Figure 1-19. Touchpad Tape Location
7. Lift up the top edge of the touchpad module (G) to remove it from the top assembly
(Figure 1-20).
Figure 1-20. Touchpad Module Removal
F
G
WEEE Annex VII Component:
Touchpad module

1-18 Disassembly Procedures
Mainboard Removal 0
Prerequisite:
WLAN (Wireless Local Area Network) Module Removal, and
LCD Module Removal
1. Find the mainboard (B) on the top assembly. Refer to Figure 1-12.
2. Disconnect the speaker cable from the mainboard connector (A) (Figure 1-21).
3. Disconnect the touchpad FFC from the mainboard connector (C) (Figure 1-21).
4. Disconnect the keyboard FPC from the mainboard connector (D) (Figure 1-21).
5. Disconnect the LED Board FFC from the mainboard connector (E) (Figure 1-21).
6. Remove three (3) screws (F & G) securing the mainboard in place (Figure 1-21).
Figure 1-21. Mainboard Connector & Screw Location
ACD
E
F
G