BBK LT2211S Service manual
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BF2294-UP1
service manual
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BF2294-UP1
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REVISION: A1
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APPROVED BY/
REVIEWED BY/
PREPARED BY/
CONCURRED BY/
RD
RD
LT2211S
Service manual
1
1. Precautions and Safety Notices ································· 3
2. Specification ················································· 4
3. Front Panel Function Control Description ························· 9
4. Adjusting Procedure ········································· 12
5. Trouble Shooting Flow Chart ·································· 15
6. Exploded Diagram and Spare Parts List ·························· 18
7. Block Diagrams ·············································19
8. Schematic Diagrams ···························································· 20
9. PCB Layout Diagrams ·········································30
TABLE OF CONTENTS
2
Precautions and Safety Notices
1.
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.
3
Specification
2.
Panel 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 350 cd/m2 typical
Contrast Ratio 700:1 typical (VGA MODE)
Brightness Uniformity 75% min.
Viewing Angle
Color Chromaticity (CIE) White: X = 0.313 ± 10% , Y = 0.329 ± 10%
Frame Rate
Response Time 5ms typical
Surface Treatment
輸入源 :
±75° (H), ±70°(V) at CR ≧ 10
76Hz
Hard Coating(3H)，AG(Haze25%)
Signals Video Format
Outputs
TV Analog TV
NTSC
F-TYPE
Connector types Inputs &
OSD
TV
VIDEO Video + L/R Audio CVBS
S-VIDEO S-VIDEO+ L/R Audio Y/C Mini Din 4 Pin S-VIDEO
Component
YPbPr
HDMI
(Y, Pb/Cb, Pr/Cr)
+ L/R Audio
Digit audio and video
480i, 576i, 480p,
576p, 720p, 1080i
480p, 576p, 720p,
4
RCAx1+ RCAx2
(Red, White)
RCAx3+RCAx2
(Red, White)
HDMI type A
VIDEO
YPbPr
HDMI
1080
VGA
VGA IN+ PC AUDIO
Analog RGB VGA 15 Pin VGA
IN
Note:
A. 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
B. 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
C. RCA jacks are all female type.
D.S-video 的 Mini DIN CNC 4 Pins (SCN570S3NS00000), the pin assignment is
described as below:
5
E.
Format
Level/Impedance
TMDS Mode
Frequency Fh = 31~60 kHz
Maximum Pixel Clock
DDC 1/2B
Connector
DVI 1.0
0.5~3.0Vp-p/100 Ohm (Differential),50 Ohm (Single ending)
Single Link
Fv = 56~76 Hz
135 MHz
Compliant with Revision 1.0
HDMI x 1
1: Ground
2: Ground
3: Y
4: C
HDMI
Analog HD15 PC Signal (RGB)
Format
Level/Impedance
DDC 1/2B
Sync H/V separate
Frequency Fh = 31~60 kHz
Maximum Pixel Clock
Connector
Format
Level / Impedance
Format
Level / Impedance Y: 1.0Vp-p / 75
Format
Level / Impedance Y: 1.0Vp-p / 75
STANDARD RESOLUTION
ATSC, 480i 720x480 60 15.7 27
R, G, B Analog
0.7Vp-p / 75
Compliant with Revision 1.0
3V TTL level / 1k
Fv = 56~76 Hz
135 Mhz
Mini D-Sub 15 pin (female) x 1
Video (Composite) CVBS Signal
NTSC, 4.43NTSC, PAL_M, PAL(B,G,H,D,N), SECAM
1.0Vp-p / 75
S-Video (Y/C) Signal
Y, C
C: ± 286 mV/ 75
Analog HD15 Video Signal (YPbPr/YCbCr)
Y, Pb, Pr or Y, Cb, Cr
Pb/Cb, Pr/Cr: 0.7 ± 0.035Vp-p / 75
HDMI Timing
V FREQ
Hz
H FREQ
kHz
CLK
MHz
6
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
SXGA 1280x1024 75 80 135
MAC 640x480 67 35 30.24
Non-VESA 720x400 70 31.5 28
Video & S-Video AV Timing
STANDARD RESOLUTION
V FREQ
Hz
H FREQ
kHz
CLK
MHz
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
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
7
t
y
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.
8
Front Panel Function Control Description
3.
9
10
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