Sansui SV3215 LCD User manual

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BF3293-XC1
Service Manual

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TABLE OF CONTENTS
1. Precautions and Safety Notices ································· 3
2. Specification ················································· 4
3. Front Panel Function Control Description ························· 9
4. Adjusting Procedure ········································· 15
5. Trouble Shooting Flow Chart ·································· 18
6. Exploded Diagram and Spare Parts List ·························· 21
7. Block Diagrams ·······································································22
8. Schematic Diagrams ································································23
9. PCB Layout Diagrams ·········································45

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1. Precautions and Safety Notices
Prior to using this service manual,please ensure that you have carefully followed all the procedures outlined in
the user's manual for this product.
(1) Read all of these instructions.
(2) Save these instructions.
(3) Follow all warnings and instructions a marked on the product.
(4) Unplug this product from the wall outlet before cleaning.Do not use liquid cleaners or aerosol cleaners, use
a damp cloth for cleaning.
(5) Do not use this product near water.
(6) Do not place this product on an unstable cart,stand or tablle.The product may fall,causing serious
damage to the product.
(7) Do not tear up the EMI label, if the label has been destroyed,that must to past same size label on the same
position.
(8) Slots and openings in the cabinet and the back or bottom are provided for ventilation,to ensure reliable
operation of the product and to protect it from overheating,those openings must not be blocked or
covered.The openings should never be blocked by placing the product on a bed,sofa, rug, or other similar
surface.This product should not be placed in a built-in installation less proper ventilation is provided.
(9) This products should be operated from the type of power source indicated on the marketin label. If you are
not sure of the type of power available, consult your dealer or local power company
(10) This product is equipped with a 3-wire grounding type plug,a plug having a third (grounding) pin. This
plug will only fit into a grounding-type power outlet. This is a safety feature, if you are unable to insert the
plug into the outlet, contact your electrician to replace your obsolete outlet. Do not defeat the purpose of
the grounding-type plug.
(11) Pay attention to the code which connects with apheliotropism board of inside panel.and don’t hook it.
(12) Do not allow anything to rest on the power cord.Do not locate this product where persons will walk on the
cord.
(13) If an extension cord is used with this product,make sure that the total of the ampere ratings on the
product plugged into the extension cord to the waplugged into outlet does not exceed 15 ampere.
(14) Never push objects of any kind into this product through cabinet slots as they may touch dangerous
voltage points or short out parts that could result in a risk of fire or electric shock.Never spill liquid of any
kind on the product.
(15) Do not attempt to service this product yourself,as opening or removing covers may expose you to
dangerous voltage points or other risks.Refer all servicing to service personnel.
(16) Unplug this product from the wall outlet and refer servicing to qualified service personnel under the
following conditions :
a. When the power cord or plug is damaged or frayed.
b. If liquid has been spilled into the product.
c. If the product has been exposed to rain or water.
d. If the product does not operate normally,when the operating instructions are followed.Adjust only those
controls that are covered by the operating instructions since improper adjustment of other controls may
result in damage and will often require extension work by a qualified technician to restore the product to
normal operation.
e. If the product has been dropped or the cabinet has been damaged.
f. If the product exhibits a distinct change in performance,indicating a need for service.

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2. Specification
BF3293 panel specification:
Item Specifications
Panel Name AUO
Display pixels 1366 (H) x 768 (V) pixels ( 1 pixel = 1 RGB
cells )
Display Area 697.685mm (H) x 392.256mm (V)
Pixel Pitch 0.51075mm
Display Colors 16.7M
Pixel Arrangement R+G+B vertical stripe
Brightness 500cd/m2 typical
Contrast Ratio 1000:1 typical at CR ≧10
Viewing Angle ±88° (H), ±88°(V) Typical
Color Chromaticity (CIE) White: X = 0.28 , Y = 0.29
Frame Rate 50/60Hz
Response Time 10ms typical
Surface Treatment AG，3H
INPUT Source :
Connector types
Input &
Output
Signal Video format
OSD
TV Analog TV PAL IEC Type TV (CABLE/AIR)
VIDEO1 Video + L/R Audio CVBS RCA
VIDEO2 Video + L/R Audio CVBS RCA VIDEO2 (REAR)
S-VIDEO S-VIDEO+ L/R Audio Y/C Mini Din 4 Pin VIDEO3 (S-
VIDEO)

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YPbPr1 Component
(Y, Pb/Cb, Pr/Cr)
+ L/R Audio
480i, 480p, 720p,
1080i RCA VIDEO4 (YPbPr1)
YPbPr2
Component
(Y, Pb/Cb, Pr/Cr)
+ L/R Audio
480i, 480p, 720p,
1080i RCA VIDEO5 (YPbPr2)
HDMI HDMI
Digital RGB +Digital
Audio
HDMI 19 Pin VIDEO6
(HDMI1)
VGA VGA+ L/R Earphone Analog RGB D-SUB 15 Pin COMPUTER
(VGA)
L/R Audio RCA STEREO
AUDIO
OUT Earphone Out TOSLINK/RCA DIGITAL
Note:
A. SCART connector

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B. HMDI connector is a type A receptacle for video/audio mode.
1. TMDS Data 2+ 9. TMDS Data 0- 17. CEC/GND
2. TMDS Data 2 shield 10. Clock + 18. +5V Power
3. TMDS Data 2- 11. Clock shield 19. Hot Plug Detect
4. TMDS Data 1+ 12. Clock -
5. TMDS Data 1 shield 13. CEC
6. TMDS Data 1- 14. NC
7. TMDS Data 0+ 15. DDC CLK
8. TMDS Data 0 shield 16. DDC DATA
C. D-Sub Connector IN. (This function also can provides to HDTV.)
D-Sub type Connector pin assignment
1. Red Video 6. Red Ground 11. GND
2. Green Video 7. Green Ground 12. SDA For DDC1/2B
3. Blue Video 8. Blue Ground 13. H-sync.
4. GND 9. +5V from PC 14. V-sync.
5. Vdd from PC for DDC 10. Sync. GND 15. SCL For DDC1/2B
D. RCA jacks are all female type.
E. Mini DIN CNC 4 Pins (SCN570S3NS00000) for S-video, the pin assignment is
described as below:
HDMI
Format DVI 1.0
Level/Impedance 0.5~3.0Vp-p/100 Ohm (Differential),50 Ohm (Single ending)
TMDS Mode Single Link
Frequency Fh = 31~80 kHz
Fv = 56~76 Hz
1: Ground
2: Ground
3: Y
4: C

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Maximum Pixel Clock 135 MHz
DDC 1/2B Compliant with Revision 1.0
Connector HDMI x 1
Analog HD15 PC Signal (RGB)
Format R, G, B Analog
Level/Impedance 0.7Vp-p / 75
DDC 1/2B Compliant with Revision 1.0
Sync H/V separate
3V TTL level / 1k
Frequency Fh = 31~80 kHz
Fv = 50~75Hz
Maximum Pixel Clock 135 Mhz
Connector Mini D-Sub 15 pin (female) x 1
Video (Composite) CVBS Signal
Format PAL_M, PAL(B,G,H,D,N), SECAM
Level / Impedance 1.0Vp-p / 75
S-Video (Y/C) Signal
Format Y, C
Level / Impedance Y: 1.0Vp-p / 75
C: ±286 mV/ 75
Analog HD15 Video Signal (YPbPr/YCbCr)
Format Y, Pb, Pr or Y, Cb, Cr
Level / Impedance Y: 1.0Vp-p / 75
Pb/Cb, Pr/Cr: 0.7 ±0.035Vp-p / 75
HDMI Timing
STANDARD RESOLUTION
V FREQ
Hz H FREQ kHz CLK MHz
ATSC, 480i 720x480 60 15.7 27
ATSC, 480p 720x480 60 31.5 27
ATSC, 1080i 1920x1080 60 33.7 74.2
ATSC, 720p 1280x720 60 45.0 74.2
ATSC, 576i 720x576 50 15.6 27
RGB PC Timing
STANDARD RESOLUTION
V FREQ
Hz H FREQ kHz CLK MHz
VGA 640x480 60 31.47 25.16
VGA 640x480 75 37.5 31.5
SVGA 800x600 60 37.88 40
SVGA 800x600 75 46.9 49.5
XGA 1024x768 60 48.36 65.0
XGA 1024x768 75 60.02 78.75
SXGA 1280x1024 60 64 108
MAC 640x480 67 35 30.24

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Non-VESA 720x400 70 31.5 28
Video & S-Video AV Timing
STANDARD RESOLUTION
V FREQ
Hz H FREQ kHz CLK MHz
PAL(B,G,H,D,I) 625 50 15.625 14.50
SECAM 625 50 15.625 14.50
PAL-M 525 60 15.734 12.65
PAL-N 625 50 15.625 14.50
HDTV/Component AV Timing
SDTV 525i 720x525 60 15.735 27
SDTV 625i 720x625 50 15.625 27
SDTV 480p 720x480 60 31.5 27
HDTV 720p 1280x720 60 50.0 74.2
HDTV 1080i 1920x1080 60 33.7 74.2
Power Source AC100 – 240 V, 60/50 Hz
Sound Output 10W X2, 8 Ohm.
Signal Connector Pin Assignment
Pin Assignment Pin Assignment Pin
A
ssi
g
nmen
t
1. Red 6. Red Ground 11. Ground
2. Green 7. Green Gro und 12. SDA
3. Blue 8. Blue Ground 13. Horizontal S
y
4. Ground 9. Not Connected 14. Vertical
Sync.
5. Self Test 10. Sync. Ground 15. SCL

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3. Front Panel Function Control Description
Operation, Adjust and Programming

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11

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The operation of each OSD controls is described as following table:
Option Description
User
Standard
Movie
Vivid
Picture（not
support VGA）
Sport
Press e/fto change the Picture Mode to be User, Vivid,
Standard, Sport, and Movie
Brightness
Press e/fto adjust the Brightness from 0 to 100
Contrast
Press e/fto adjust the Contrast from 0 to 100
Tint（not support
PAL）Press e/fto adjust the Tint from 0 to 100
Saturation
Press e/fto adjust the Saturation from 0 to 100
Sharpness Press
e/fto adjust the Sharpness from 0 to 100
Full
Zoom1
Zoom2
Scale （Input
HDMI, YPbPr
(except 480I ) /
VGA source, does
not support scale
function）
Normal
Switch between user, zoom1, zoom2 and normal in all
video mode
User
Cool
Picture
Color temp
Warm
Press e/fto select the color Temperature to be User,
Warm, or Cool
User
Live
Pop
Sound mode
Rock
Press e/fto change Sound Mode to be User, Live, POP
and Rock
Volume
Press e/fto adjust the Volume from 0 to 100
Base
Press e/fto change the Bass from 0 to 100
Treble
Press e/fto change the Treble from 0 to 100
Balance
Press e/fto adjust the Balance from 0 to 100
Audio setup
Mute
Press e/fto adjust the Mute on or off
English,
German,
French,
Italian,
Spanish,
Portugal,
Holland
Language
(待定)
Poland
Allow you to select a language for all the on-screen menu.
Time out Press e/fto select the Menu Timeout to be 5,10,15,20,25,
30,35,40,45,50,55,60 seconds.
Transparency
Sleep time Press e/fto select the Sleep Timer to be 15, 30, 45, 60,
90, 120 minutes or Off.
Osd setup
Reset Recall factory setting.
TV system Allow you to select TV system as PAL / SECAM (default is
AUTO).
Auto scan
Next Allow you to automatically create a list of receivable
channels.
Fine tune Press e/fto adjust the Fine Tune from -50 to 50
TV setup
Add/Erase Allow you to add/remove channels.

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Channel Name Edit the channel name. (Europe only)
Channel Swap Swap the channel location . (Europe only)
Manual Search Search the channel manually
Channel reset Allow you to restore a default TV channel table. (TV
only)
Auto adjust Allows you to auto adjust the display mode.
H-Position
Allows you to adjust the position of the picture left and right
in the window
Press VOLUME ( -, +) to adjust the Sharpness from 0 to
100
V- Position
Allows you to adjust the position of the picture left and right
in the window
Press VOLUME ( -, +) to adjust the Sharpness from 0 to
100
Clock Controls the width of the picture based on the VGA mode
VGA setup
Phase
Allows you to improve focus clarity and image stability
Press VOLUME ( -, +) to adjust the Hue from 0 to 100

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4. Adjusting Procedure
ITEM
Program
Menu.
Equipment
s
Requireme
n
Procedure and SPEC
1 VIDEO
adjustment DVD
Video Cable
Play DVD
Set DVD to
interlaced output
Screen is clear and fluent
2 S-VIDEO DVD
S-Video Cable
Play DVD
Set DVD to
interlaced output
Screen is clear and fluent
3
DVD
(Y,Cb,Cr) 480i
DVD
Component Cable
Play DVD(Y,Cr,Cb)
Play DVD
Set DVD to
interlaced output
Screen is clear and fluent
4
DVD
(Y,Pb,Pr)
480p/720p/1080i
DVD
Component Cable
720p/1080i
DVD Player
Samsung HD-931
Play DVD(Y,Pr,Pb)
Set the DVD to
pro
g
ressive output
Screen is clear and fluent
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HDTV
(Y,Pb,Pr)
720p/1080i
HDTV Receiver
ATSC HDTV Tuner
SAMSUNG
SIR-T165
BS Tuner:
Panasonic
TU-BHD300
Component Cable
Play HDTV
(Y,Pr,Pb)
Screen is clear and fluent
D-VHS Digital HDTV Video Cassette Recorder
JVC HM-DH30000U
Panasonic NV-DH2
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VGA/HDMI
PC
VGA Cable
DVI Cable
PC Mode 1. Each Mode can display normally。If there
is a specific Mode that is not appropriate
after switching ，press Auto Adjust can
automated adjust to appropriate screen.
2. Confirm PC can automated identify the
model of PDP.
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VGA TV BOX
VGA Cable
Utilize external-connected TV BOX, watching
the
TV program; the screen is clear and fluent.

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8
WINDOWS.
OVERSCAN (6%)
DVD
S-Video Cable
Video Cable
Play DVD test disc
VIDEO ESSENTIALS
Set DVD to
interlaced output
1. Select SOURCE then choose VIDEO or
SVIDEO.
2. Sending the signal from DVD test disc
(eighth paragraph)
3. Watch the screen to check if sees the
block screen within SAFE ACTION.
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480P/480i switch DVD
Component Cable
Play DVD test disc
VIDEO ESSENTIALS
Set the DVD to
pro
g
ressive output
(P-SCAN)
1. Select SOURCE then choose VIDEO or
S-VIDEO.
2. Sending the signal from DVD test disc
(sixth paragraph)
3. Switch DVD output mode P-SCN ON/OFF,
see if there is the action of switch mode on
the screen.(480i/480p).
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Audio adjustment Pattern Generator
Sound input
External connect
left-right
trumpet(10~15W/4)
Any Pattern 1. Select SOURCE
2. Then press MENU KEY enter AUDIO
adjustment item.
11a. Volume 1. ←,→Key Set the sound volume.
2. Check if the action is normal.
b. Treble 1. Press←,→Key Set the high pitch volume
2. Check if the action is normal.
3. The initial value is ”16”
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c. Bass 1. Press←,→Key Set the low pitch volume.
2. Check if the action is normal.
3. The initial value is ”16”

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d. Balance 1. Press←,→Key Set the balance between
left-right trumpet.
2. Check if the action is normal.
3. The initial value is located at middle.
13Language
adjustment
1. Select required language.
2. Initial value is set to English or set upon
clients’ requirement.

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5. Trouble Shooting Flow Chart
STEP 1.
NO NO
YES YES
YES YES
NO
NO
YES
YES
OK NG NO YES
No Display
( Black )
LED ON ?
Push the power
ON/OFF switch
LED Color
change ?
Check IR/LED
board？
Check Keypad
Board？
LCD TV
ON?
Check
Video&
Audio
Function
C0N1
Pin7Active
Check the D-SUB
37Pin board
C0N1-Pin7
Check Inverter
Power (24V)of
LCD Panel
,
OK?
B
Display ?
Check
Video&
Audio
Function
A Change AD
Board BOX
Check AC
Socket ?
Change AC
Socket Fuse
C

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NO NO
OK
YES
YES
NO
YES
NO
B
J11 PIN23
24 Active
low(See Panel
SPEC.
)
?
Change the LCD
Panel
Display ? Check Video&
Audio Function
Change AD
Board BOX
A
Check the connection
of Signal cable
Display ?
Check Video&
Audio Function
Change AD
Board BOX
Change AD Board
BOX
the LVDS
connecter?