Acer V193w Service Guide
Here you can view all the pages of manual Acer V193w Service Guide. The Acer manuals for Notebook are available online for free. You can easily download all the documents as PDF.
Page 31
31
Troubleshooting
This chapter provides troubleshooting information for the V193W:
1. No Power
Chapter 4
No power
Press power key and look if the
picture is normal
Please...
Page 32
32
2. No Picture (LED is orange)
No picture
The button if under
control X401 oscillate
waveform is normal
Replace U401
Replace X401
Measure U404 Pin2=3.3V,
Check Correspondent
component
Replace U401
X401 oscillate
waveform is normal
Replace U404
OK OK
OK
OK
OK
NG
NG
NG NG
Check reset circuit of
U401 is normal
Check HS/VS from
CN101 is normal
Replace X401
Check Correspondent
component
NG
NG OK
Page 33
33
3. Panel Power Circuit
White screen
Measure Q404 base
is low level? X401 oscillate
waveform is normal
Check CN403 is solder
and Q404,Q405 is OK?
Check Correspondent
component.
Replace PANEL
Check Correspondent
component.
Replace U401
OK
OK OK
Replace X401
OK
NG
NG NG
NG
Check reset circuit of
U401 is normal
Page 34
34
4. Key Board
OSD is unstable or not working
Is Key Pad Board connecting normally? Connect Key Board
Is Button Switch normally? Replace Button Switch
Y
NG
NG
Is Key Pad Board normally? Replace Key Board
Y
NG
Y
Check Main Board
Page 35
35 5. Power Board No power Check to CN902 Pin10,11 =14V and Pin6,7 = 5 V OK Check Interface board Check AC line volt 120V or 220V Change F901, Check BD901, L901, IC901 Check the voltage of C905(+) Check bridge retified circuit Check start voltage for the Pin2 of IC901 Change IC901 OK Check the auxiliary voltage is smaller than 20V OK NG No power NG NG OK Check T901,D906, D907, Q903,ZD921,ZD922,IC904,IC903 Check IC901 NG OK NG
Page 36
36
W/LED No Backlight
Check the 14V voltage input
Check the adapter
Check ON/OFF signal
Check Interface board
Check IC801 pin12=12V?
Change Q805.Q808 or Q810
Check the pin9&10 of IC801 have PWM wave
Change Q801/Q804/Q811/Q812
Replace IC801
Check the resonant wave
of pin3 & pin7 for T801
Check the output of T801,T802
Check Q802/Q803
Check connecter & lamp OK
Change T801,T802
OK
OK
OK
OK
OK NG
NG
NG
NG
NG
NG
OK
Page 37
37
Connector Information
The following figure shows the connector locations on the monitor:
Chapter 5
Page 38
38
FRU (Field Replaceable Unit) List
This chapter gives you the FRU (Field Replaceable Unit) listing in global configurations of V193W.Refer to this
chapter whenever ordering for parts to repair or fo r RMA (Return Merchandise Authorization).
NOTE: Please note W HEN ORDERING FRU PARTS, that you shou ld check the most up-to-date information
available on your regional web or channel (http://a...
Page 39
39 Part List Above picture show the description of the following component. Item Picture Description 1 Base 2 Main Frame 4 Panel
Page 40
40
5
Power Board
6
Main Board