Acer V277 User manual

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ACER_V277
LIFECYCLE EXTENSION
GUIDE

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Contents
Table of Contents
ImportantSafety Notice------------------------------------------------------------------------------------- 3
1. Exploded Diagram -------------------------------------------------------------------------------------- 4
2. Wiring connectivity diagram-------------------------------------------------------------------------- 5
3. Mechanical Instructure--------------------------------------------------------------------------------- 6
4. Assembly and Disassembly Procedures------------------------------------------------------------ 7
5. Troubleshooting----------------------------------------------------------------------------------------- 15
6. FRU List--------------------------------------------------------------------------------------------------- 19
Safety No
t ice
Any person attempting to service this chassis must familiarize with the chassis and be
aware of the necessary safety precautions to be used when serving electronic equipment containing
high voltage
Important Safety No ti ce ACER S190HQL 1

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Product Announcement:
This product is certificated to meet RoHS Directive and Lead-Free produced definition. Using approved
critical components only is recommended when the situation to replace defective parts. Vender assumes
no liability express or implied, arising out of any unauthorized modification of design or replacing non-
RoHS parts. Service providers assume all liability.
Qualified Repairability:
Proper service and repair is important to the safe, reliable operation of all series products. The service
providers recommended by vender should being aware of notices listed in this service manual in order
to minimize the risk of personal injury when perform service procedures. Furthermore, the possible
existed improper repairing method may damage equipment or products. It is recommended that service
engineers should have repairing knowledge, experience, as well as appropriate product training per
new model before performing the service procedures.
NOTICE:
! To avoid electrical shocks, the products should be connect to an authorized power cord, and turn off
the master power switch each time before removing the AC power cord.
! To prevent the product away from water or exposed in extremely high humility environment.
! To ensure the continued reliability of this product, use only original manufacturer’s specified parts.
! To ensure following safety repairing behavior, put the replaced part on the components side of PWBA,
not solder side.
! To ensure using a proper screwdriver, follow the torque and force listed in assembly and
disassembly procedures to screw and unscrew screws.
! Using Lead-Free solder to well mounted the parts.
! The fusion point of Lead-Free solder requested in the degree of 220°C.

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1. Exploded Diagram

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2. Wiring Connectivity diagram

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3. Mechanical Instruction
Tools Required
List the type and size of the tools that would typically can be used to disassemble the product to a point
where components and materials requiring selective treatment can be removed.
Tool Description:
- working table
- Screw-driver
- Knife
- glove
- cleaning cloth
- ESD protection

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4. Assembly and Disassembly Procedures
Disassembly Procedure
Step. 1 Pull the base & neck assembly out
Step.2 Unscrew four screws
Step.3 Separate hooks between MID_FRAME and Rear cover

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Step 4. Pull up the Rear Cover and pull out all connectors
Step.5 Unscrew screws on main shielding and disassemble AL tape
Detail AL tape location as below:
Step.6 Separate speaker from MID_FRAME and LVDS & Backlight FFC from LCM

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Step.7 Unscrew two hex nuts and seven screws and remove main board PCBA from main shielding.
Step.8 Remove connecter cable and separate main board and power board, separate mylar and shielding
Step.9 Unscrew eleven screws and separate MID FRAME and panel
Step.10 Separate lens from MID frame
Step.11 Unscrew two screws and disassemble key board from rear cover and separate navi key& cable

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Step.12 Separate wall-mount BKT and display key from rear cover
Step.13 Unscrew the screw and separate base & neck assembly
Step.14 Remove six silicon rubbers and unscrew seven screws to separate metal and plastic cover
Step 15. Separate back cover from neck, unscrew five screws and separate front cover from hinge assy.

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Assembly Procedure
Step1. Assembly main board into shielding, use screw to fix. Assembly main board on LCM.
Step2. Insert 30 pin LVDS FFC to LCM, then use acetate cloth tape to tape FFC.
Step3. Lock the shielding on panel with screw. (in red circle)
Step4. Use Al tape to fix shielding (tape in blue circle).

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Step5. Insert 10 pin back light FFC to panel and main board, use yellow tape to fix. (Tape in red circle).
Step6. Insert 10 pin back light FFC and 30 pin LVDS FFC to main board. Use yellow tape to fix.
Step7. Tape AL tape to fix FFC. (Tape in red circle).
Step8. Assembly middle frame with LCM and fix screw (in red circle)

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Step9. Lock middle frame screw (in red circle)
Step10. If with speaker model, assembly speaker on middle frame, and assembly speaker cable on main
board. (red and white cable is on left side, yellow and black is on right side.)
Step11. Tape speaker cable with acetate cloth tape (in yellow circle) and yellow tape (in blue circle)
Step12. Insert key board FFC on main board, B277 with USB hub model also need to insert USB FFC on
main board.

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Step13.Assembly rear cover, and push around the surrounding to assembly well.
Step14. Lock the screw on rear cover (in red circle).

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5. Troubleshooting
5.1 Test flow for abnormal machine:
Start
Check DC Power
is 19V?
Power cord plug
into AC source
AC
power?
Check adaptor
Key’s LED
indicator is light
or blink?
No input signal
BLACK screen
but a little light?
Re-insert 30pin LVDS cable
between LCM and main board
Still BLACK
screen?
5VD_REG,3V3D_REG
on main board is
normal?
Check Main board
LCM broken
END
N
Y
blink
light
Y
N

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5.2 key debug flow:
5.3 Panel debug flow (bmipx&bmix&bip):
Key Debug
Replace
keyboard
Check U12 works
END
N
Y
Key works?
Disconnect LVDS cable
Replace panel
Check set is ok?
Check U12 works
N
Y
Check LCM power
(R82) 5V ok?
Check Q1 pin2 is 5V?
N
N
Y
Check Q2 pin2
is high?(＞2.4V)
LCM power Debug
Y
N
Y
Replace Q1
END

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Panel debug flow (bi):
Disconnect LVDS cable
Replace panel
Check set is ok?
Check U400 works
N
Y
Check LCM power
(R500) 5V ok?
Check Q500 pin2 is
5V?
N
N
Y
Check Q501 pin2
is high?(＞2.4V)
LCM power Debug
Y
N
Y
Replace Q500
END

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5.4 LED backlight debug flow：
LED driver Debug
Check Net
19V_BLD is
19V?
Replace FB36
FB36 is
open?
BD4 is damaged?
BU3 is damaged?
Replace BU3
Check U12 works
END
N
Y
Y
N
Y
N
Replace BD4
Backlight on?
Y
N
BR31 is open?
Replace BR31
Y
N
Open BR67
Y
N
Check BU5 pin5
is high ?
Check NET BL_CTRL
level is high?
Reassemble BR67
Y
N
Y
Y
N
Replace BU5

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6. FRU (Field Replaceable Unit) List
INVERTER / Power BD 55.TFQM5.001 R050005062230 A-D PSU 1.68 A 19V (ADO-32W1 19 Ver.A7)_ACER BV7
INVERTER / Power BD 55.T0WM5.046 R050005062180 A-D PSU 1.3 A 19V ADO-25W1 19(x) _ ACER V226HQL
BOARD 55.TFQM5.002 R352712920150 MAIN BD ASS'Y BOM_V277 bmipx_PVT
BOARD 55.TFQM5.003 R352710920150 MAIN BD ASS'Y V277 bmix (RTD2513AR)ES7.0
BOARD 55.TFQM5.004 R352711120150 MAIN BD ASS'Y V277 bi (RTD2313AR)ES7.0
BOARD 55.TFKM5.004 R352400620156 KEY BD ASS'Y (B247Y&V247Y)
CABLE 50.TFKM5.001 R046611040030 WH KY-2501HS01-04/KY-2501HS01-04 #24 100mm W/B LF
CABLE 50.TFQM5.002 R046728081101 WH FFC 8P(0.5mm) 750mm(3FOLD)60V (A8+A5)LF
CABLE 50.TFQM5.003 R046728081091 WH FFC 8P(0.5mm) 670mm(3FOLD)60V (A8+A5)LF
CABLE 50.TFQM5.004 R046128101010 WH FFC 10P(0.5mm)600mm (4FOLD) 90V(A8+A12/V-CUT) LF
CABLE 50.TFQM5.006 R046128101000 WH FFC 10P(0.5mm)600mm (4FOLD) 90V(A8+A12/V-CUT) LF
CABLE 50.TFQM5.005 R046128301900 WH FFC 30P(1.0mm)500mm (2FOLD)90V G/F W/CONN.(A15+BC)+AL(AA) LF -OP
CABLE 50.TFQM5.007 R046128301890 WH FFC 30P(1.0mm)500mm (2FOLD)90V G/F W/CONN.(A15+BC)+AL(AA) LF -OP
FAN
SINK/SPEAK/EARPHON
E/RTC
23.TFQM5.001 R033502041130 SPK 2W 4ohm 28.5*22*8mm(R600mm*L200mm) VECO for BV277 LF
LCD KL.27002.014 R352700920395 LM270WF5-RSAB1 Acer B277
Parts Photo
SPL_Category
Acer PN
Raken PN
ODM Description