Sharp LC-42LE40E Service Manual ▷ View online
LC-32LE40E-LC-42LE40E
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< During external connection > No picture on the TV (1)
↓
No picture appears on SCART - connected monitor during the tuner (U/V) reception.
↓
TERMINAL_UNIT:
↓
↓YES
↓YES
< During external connection > No picture on the TV (2)
AVOUT:
↓
No picture from SCART appears on AV OUT connected.
↓
TERMINAL_UNIT:
↓
↓YES
↓YES
Is CVBS signal output into pin (19) of CN151 (SCART)?
NO
Check the setting of an external input device that connects of
CN151.
CN151.
Refer to “The picture doesn't appear in all modes.”
Is U401 pin (170) CVBS signal output into pin (19) of CN151
(SCART)?
(SCART)?
NO
Check the line between CN151 and U401.
Checklist:
1) Is the Signal Type (item) in MENU-Option-Input Select equal to Signal Type of an external device? …Set it to “CVBS”, “Y/C”, “RGB”, “AUTO”.
2) Is ANT-CABLE disconnected or connected improperly? …Connect it correctly as per the operation manual.
3) The picture is sent to the monitor in a CVBS signal if the source during display is ATV/DTV, CVBS or Y/C of SCART, AV.
When sent by component, etc., that signal is not sent to the monitor.
4) When the monitor picture is not sent and is not displayed on the monitor, refer to “No picture” for each terminal.
5) The video output from SCART is not the monitor output (output of the picture now watching).
The picture of the last selected TV channel is always sent to SCART. (Specification)
1) Is the Signal Type (item) in MENU-Option-Input Select equal to Signal Type of an external device? …Set it to “CVBS”, “Y/C”, “RGB”, “AUTO”.
2) Is ANT-CABLE disconnected or connected improperly? …Connect it correctly as per the operation manual.
3) The picture is sent to the monitor in a CVBS signal if the source during display is ATV/DTV, CVBS or Y/C of SCART, AV.
When sent by component, etc., that signal is not sent to the monitor.
4) When the monitor picture is not sent and is not displayed on the monitor, refer to “No picture” for each terminal.
5) The video output from SCART is not the monitor output (output of the picture now watching).
The picture of the last selected TV channel is always sent to SCART. (Specification)
Is CVBS signal output into pin (19) of CN152 (AV OUT)?
NO
Check the setting of an external input device that connects of
CN152.
CN152.
Refer to “The picture doesn't appear in all modes.”
Is CVBS signal output from pin (170) of IC U401 into pin (2) of
CN152 (AV OUT)?
CN152 (AV OUT)?
NO
Check the line between CN152 and U401.
Checklist:
1) Is the Signal Type (item) in MENU-Option-Input Select equal to Signal Type of an external device? .
2) The picture is sent to the monitor in a CVBS signal if the source during display is TV, CVBS or Y/C of SCART, AV.
When sent by component, etc., that signal is not sent to the monitor.
3) When the monitor picture is not sent and is not displayed on the monitor, refer to “No picture” for each terminal.
4) The video output from SCART1 is not the monitor output (output of the picture now watching).
The picture of the last selected TV channel is always sent to SCART. (Specification)
1) Is the Signal Type (item) in MENU-Option-Input Select equal to Signal Type of an external device? .
2) The picture is sent to the monitor in a CVBS signal if the source during display is TV, CVBS or Y/C of SCART, AV.
When sent by component, etc., that signal is not sent to the monitor.
3) When the monitor picture is not sent and is not displayed on the monitor, refer to “No picture” for each terminal.
4) The video output from SCART1 is not the monitor output (output of the picture now watching).
The picture of the last selected TV channel is always sent to SCART. (Specification)
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CHAPTER 5.
MAJOR IC INFORMATIONS
[1] MAJOR IC INFORMATION
2.1 U401(MT5366CAOU/B)
General Description
The MediaTek MT5365/66 family is a backend decoder and a TV controller and offers high integration for advanced applications. It combines a transport
de-multiplexer, a high definition video decoder, an AC3 audio decoder, a dual-link LVDS/mini-LVDS transmitter, and an NTSC/PAL/SECAM TV decoder
with a 3D comb filter (NTSC/PAL). The MT5365/66 enables consumer electronics manufactures to build high quality, low cost and feature-rich DTV.
World-Leading Audio/Video Technology: The MT5365/66 supports Full-HD MPEG1/2/4/DiviX/VC1/RM/H.264/AVS video decoder standards, and JPEG.
The MT5365/66 also supports MediaTek MDDiTM de-interlace solution can reach very smooth picture quality for motions. A 3D comb filter added to the
TV decoder recovers great details for still pictures. The special color processing technology provides natural, deep colors and true studio quality video.
Also, the MT5365/66 family has built-in high resolution and high-quality audio codec. Rich Features for High Value Products: The MT5365/66 family
enables true singlechip experience. It integrates high-quality HDMI1.3 (partial HDMI1.4), high speed VGA ADC, dual-channel LVDS, USB2.0 receiver,
Ethernet, TCON and panel overdrive.
Key Features
1. Worldwide multi-standard analog TV demodulator
2. A transport demultiplexer
3. A muti-standard video decoder
4. An AC3/MPEG2 audio decoder
5. HDMI1.3 receiver (cover HDMI1.4 partial Spec)
HDMI 1.4
Spec.
Ethernet
Channel
Channel
3D over
HDMI
4Kx2K
Audio Return
Channel
Additional
Color Space
Optional
Yes
No
Yes Yes
6. Audio codec
7. TCON
8. Ethernet
9. Panel overdrive control
10. Local dimming
General Features
Host CPU
ARM1176JZS-756MHz
16K I-Cache and 16K D-Cache
14K Boot ROM
JTAG ICE interface
Watch Dog timers
Transport Demultiplexer
New generation 2 demux design
Supports one serial transport stream input
Supports ATSC, DVB-T, DVB-C transport stream input
Support DES / 3-DES / DVB / AES / Multi-2 de-scramblers
Up to 8 even/odd keys for descrambling
Supports 32 PID filters and 32 section filters
Supports 32 PID filters for recording
Supports hardware CRC-32 check
Supports PCR recovery function
Supports a micro-processor for stream process and video start code detection
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MPEG2 Decoder
MPEG MP@ML, MP@HL
Supports de-blocking filter
MPEG1 Decoder
MPEG4 Decoder
ASP@L5
H.264 (MPEG4.10) HD Decoder (AVC)
MP@L4.0, HP@L4.0, constrained BP@L3 video standard
VC-1 (SMPTE421M)
MP@HL, AP@L3(Partial Support, support up to 1920x1080)
WMV9 decoder MP@HL
DivX (XviD) Decoder
DIVX3 / DIVX4 / DIVX5 / DIVX6 / DIVX HD
AVS Decoder
Jizhun profile @Level 6.0.1
RMVB Decoder
RealVideo8/9/10
Soreson H.263
Still Image decoding
JPEG (base-line or progressive)
De-mosquito engine
2D/3D for all AV inputs
2D Graphics
Supports multiple color modes
Point, horizontal/vertical line primitive drawings
Rectangle fill and gradient fill functions
Bitblt with transparent options
Alpha blending and optional pre-multiplied alpha composition Bitblt
Stretch Bitblt
YCbCr to RGB color space conversion
Support index to direct mode bitblt
Image Resizer
Supports 16bpp/32bpp direct color format.
Supports 420/422 video format.
Supports 420/422/444 JPEG format.
Arbitrary ratio vertical/horizontal scaling of video, from 1/128X to 128X
Simple DMA.
OSD Plane
Three linking list OSDs with multiple color mode and two of them has up-scaler
Video Plane
Supports video freeze and over scan.
Flesh tone management
Gamma correction
Color Transient Improvement (CTI)
2D Peaking
Saturation/hue adjustment
Brightness and contrast adjustment
Black and White level extender
Adaptive Luma management
Automatic detect video, film and mixed-mode source
3:2/2:2 pull down source detection
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Supports FHD motion-adaptive de-interlace in 32bit dram interface
Supports excellent low angle image processing
Brilliant boundary shaping for moving object
Advanced non-linear panorama scaling.
Programmable zoom viewer
Progressive scan output
Supports alpha blending for OSD on video plane.
Dithering processing for flat panel display
Frame rate conversion.
Supports FHD panel and VGA dot-to-dot
Supports PIP/POP, (dual de-interlace, one HD and one SD)
OD
Support 60Hz Full-HD and WXGA panel over drive.
TCON
Flexible timing control with programmable timing
i. Horizontal timing control
ii. Vertical timing control
iii. Multi-line timing control
iv. Multi-frame timing control
Support gate power modulation timing
Support 1/2/4/8 frame inversion, 1-line inversion, 2-line inversion, and could up to 255-line dot inversion
Local Dimming
Block division: up to 800 total blocks, up to 100 horizontal blocks
Support 50K ~ 50M SPI clock rate
LVDS
Support 6/8/10/12-bit one-link, or 6/8/10-bit dual-link LVDS transmitter,
Built-in spread spectrum for EMI performance
Programmable panel timing output
Mini-LVDS
Single port 6/8-bit 6 pairs mini-LVDS output for WXGA 60Hz panel
Single port 6/8-bit 3 pairs mini-LVDS output for WXGA 60Hz panel
Dual port 6/8-bit 3 pairs mini-LVDS output for WXGA 60Hz panel
Single port 8bit 6 pairs mini-LVDS output for FHD 60Hz panel
Dual port 8 bit 6 pair mini-LVDS output for FHD 60Hz panel
Dual port 8bit 3 pairs mini-LVDS output for FHD 60Hz panel
CVBS In
On-chip 54 MHz 10-bit video ADC
Supports PAL (B,G,D,H,M,N,I,Nc), NTSC, NTSC-4.43, SECAM
NTSC/PAL supports 3D/2D comb filter
Built-in motion-adaptive 3D Noise Reduction
VBI data slicer for CC/TT decoding
Supports 2 S-Video.
MT5366 support 3-channel CVBS. MT5365 support 2-channel CVBS.
Supports SCART connector
VGA In
Supports VGA input up to UXGA 162 MHz
Supports full VESA standards
Component Video In
Supports two component video inputs
Supports 480i / 480p / 576i / 576p / 720p / 1080i / 1080p
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