BBK LT2209S Schematic
Service manual
LT2209S
1. Precautions and Safety Notices ································· 1
2. Specification ················································· 2
3. Front Panel Function Control Description ························· 7
4. Adjusting Procedure ········································· 12
5. Trouble Shooting Flow Chart ·································· 15
6. Exploded Diagram and Spare Parts List ·························· 19
7. Block and Schematic Diagram ·············································20
8. PCB Layout Diagrams ·········································30
TABLE OF CONTENTS
0
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.
1
2. Specification
Item Specifications
Display pixels 1680 (H) x1050 (V) pixels ( 1 pixel = 1 RGB cells )
Active Area 473.76mm (H) x 296.1mm (V)
Pixel Pitch 0.282mm (H) x 0.282mm (V)
Bezel opening 477.7mm(H)x300.1mm(V)
Display Colors 16.7M
Pixel Arrangement R+G+B vertical stripe
Display Mode Normally white
Brightness 400 cd/m2 typical
Contrast Ratio 700:1 typical (VGA MODE)
Brightness Uniformity 75% min.
Viewing Angle
± 75° (H), ± 70°(V) at CR ≧ 10
Color Chromaticity (CIE) White: X = 0.313 ± 10% , Y = 0.329 ± 10%
Frame Rate
76Hz
Response Time 5ms typical
Surface Treatment Hard Coating(3H)
INPUT Source :
Signals Video Format
Outputs
Connector types Inputs &
OSD
Main-TV Analog TV PAL/SECAM PH Type TV (CABLE/AIR)
VIDEO Video + L/R Audio CVBS RCAx1+ RCAx2
VIDEO1 (REAR)
(Red, White)
S-VIDEO S-VIDEO+ L/R Audio Y/C Mini Din 4 Pin VIDEO2 (S-VIDEO)
SCART RGB+Y/C+
CVBS(input/output)+
SCART 21pin VIDEO3(SCART IN)
L/R(input/output)
2
YPbPr
Component
(Y, Pb/Cb, Pr/Cr)
+ L/R Audio
480i, 576i, 480p,
576p, 720p, 1080i
RCAx3+RCAx2
(Red, White)
VIDEO4 (YPbPr)
VGA
AC IN/Power
Switch
Note:
A. SCART connector.
VGA IN+ PC AUDIO
Analog RGB VGA 15 Pin
VIDEO5（VGA IN）
IN
AC Power IN AC 100~240V YC14 AC IN
B. HMDI connector is a type A receptacle for video/audio mode.
3
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. VGA Connector.
VGA type connector pin assignment
1.Red Video 6.Red Ground 11.ISP-SEL-I
2.Green Video 7.Green Ground 12.SDA
3.Blue Video 8.Blue Ground 13.H-sync.
4.None 9.+5V 14.V-sync.
5.GND 10.Sync GND 15.SCL
D.RCA jacks are all female type.
E.Mini DIN CNC 4 Pins (SCN570S3NS00000) for S-video, the pin assignment is
described as below:
1: Ground
2: Ground
3: Y
4: C
HDMI
Format
Level/Impedance
TMDS Mode
DVI 1.0
0.5~3.0Vp-p/100 Ohm (Differential),50 Ohm (Signal ending)
Signal Link
4
Frequency Fh = 31~80 kHz
Fv = 56~76 Hz
Maximum Pixel Clock
DDC 1/2B
Connector
Format
Level/Impedance
DDC 1/2B
135 MHz
Compliant with Revision 1.0
HDMI x 1
R, G, B Analog
0.7Vp-p / 75Ω
Compliant with Revision 1.0
Sync H/V separate
3V TTL level / 1kΩ
Frequency Fh = 31~80 kHz
Fv = 56~76 Hz
Maximum Pixel Clock
Connector
135 Mhz
Mini VGA 15 pin (female) x 1
Video (Composite) CVBS Signal
Format
Level / Impedance
NTSC, 4.43NTSC, PAL_M, PAL(B,G,H,D,N), SECAM
1.0Vp-p / 75Ω
VGA
S-Video (Y/C) Signal
Format
Y, C
Level / Impedance Y: 1.0Vp-p / 75Ω
C: ± 286 mV/ 75Ω
Analog HD15 Video Signal (YPbPr/YCbCr)
Format
Y, Pb, Pr or Y, Cb, Cr
Level / Impedance Y: 1.0Vp-p / 75Ω
Pb/Cb, Pr/Cr: 0.7 ± 0.035Vp-p / 75Ω
HDMI Timing
STANDARD RESOLUTION
V FREQ
Hz
H FREQ
kHz
CLK
MHz
480p 720x480 60 31.46 27
576p 720x576 50 31.25 27
720p 1280x720 50 37.5 74.25
720p 1280x720 60 45.0 74.25
1080i 1920x1080 50 28.12 74.25
1080i 1920x1080 60 33.75 74.25
VGA Timing
STANDARD RESOLUTION
V FREQ
Hz
H FREQ
kHz
CLK
MHz
VGA 640x480 60 31.47 25.17
VGA 640x480 72 37.86 31.5
VGA 640x480 75 37.5 31.5
SVGA 800x600 60 37.88 40
SVGA 800x600 72 48.07 50
5
t
y
SVGA 800x600 75 46.9 49.5
XGA 1024x768 60 48.36 65.0
XGA 1024x768 70 56.47 75
XGA 1024x768 75 60.02 78.75
SXGA 1280x1024 60 64 108
Video & S-Video AV Timing
STANDARD RESOLUTION
NTSC 525 60 15.734 12.65
PAL(B,G,H,D,I) 625 50 15.625 14.50
SECAM 625 50 15.625 14.50
4.43NTSC 525 60 15.734 12.65
HDTV/Component AV Timing
SDTV 480p 720x480 60 31.461 27
SDTV 480i 720x480 60 15.734 13.5
SDTV 576p 720x576 50 31.25 27
V FREQ
Hz
H FREQ
kHz
CLK
MHz
SDTV 576i 720x576 50 15.62 13.5
HDTV 720p 1280x720 50 37.5 74.25
HDTV 720p 1280x720 60 45 74.25
HDTV 1080i 1920x1080 50 28.12 74.25
HDTV 1080i 1920x1080 60 33.7 74.25
Power Source
Sound Output 10W X2, 8 Ohm.
Signal Connector Pin Assignment
AC100 – 240 V, 60/50 Hz
Pin Assignment Pin Assignment Pin Assignmen
1. Red 6. Red Ground 11. Ground
2. Green 7. Green Gro und 12. SDA
3. Blue 8. Blue Ground 13. Horizontal S
4. Ground 9. Not Connected 14.
5. Self Test 10. Sync. Ground 15. SCL
Vertical
Sync.
6
3. Front Panel Function Control Description
Operation, Adjust and Programming
7
8
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