Sharp LC-37LE320E Service Manual ▷ View online
2008-03-14
LC-19LE320, LC-22LE320, LC-26LE320, LC-32LE320, LC-37LE320, LC-42LE320
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Does not the picture of the HDMI signal input to HDMI3 go out?
MINI AV_UNIT:
↓
↓
YES
↓NO
YES
YES
↓
YES
<External input VGA>No picture on the display (9)
↓
Does not the picture of the PC IN(ANALOG) video signal input to VGA(15pin-D-SUB terminal) go out?
TERMINAL_UNIT:
↓
MAIN_UNIT:
↓YES
↓YES
<External input AV1(Component)>No picture on the display (10)
↓
Does not the picture of the component video signal input to Component go out?
TERMINAL_UNIT:
↓
MAIN_UNIT:
↓YES
↓YES
NO
Is R/G/B/H/V signal sent to pin (1)/R, (2)/G, (3)/B, (14)/H, (13)/V of
VGA (CN101)?
VGA (CN101)?
NO
Check the setting of an external input device that connects of
CN101.
CN101.
Refer to “The picture doesn't appear in all modes.”
Is R/G/B/H/V signal sent to pin (AT25)/R, (AU24)/G, (AT23)/B,
(AR22)/H, (AU22)/V of IC U401?
(AR22)/H, (AU22)/V of IC U401?
NO
Check the line between IC U401 and CN101.
Is the HOT_PLUG detection function of pin (19) of a HDMI terminal
(CN506) normal?
(CN506) normal?
Check the line between pin (35) of IC U501 and CN506.
Refer to “The picture doesn't appear in all modes.”
Check the connection and setup with the external HDMI devices.
Are EDID data pin (6)(SCL) of IC U504 (EEPROM), pin (5)(SDA)
accessed, and is it read from pin (15), pin (16) of a HDMI terminal
(CN506)?
accessed, and is it read from pin (15), pin (16) of a HDMI terminal
(CN506)?
NO
Is access possible in the re-writing or exchange of EDID data of
IC U504?
IC U504?
Check CN506, IC U504 and peripheral circuits.
Is TMDS signal input into pin(48, 47)/RX3-2±,(45, 44)/RX3-1±, (42,
41)/RX3-0±, (39, 38)/RX3-C± of IC U501?
41)/RX3-0±, (39, 38)/RX3-C± of IC U501?
Check the line between IC U501 and CN506.
NO
Is TMDS signal output from pin(17, 18)/ 2±,(20, 21)/ 1±, (23, 24)/ 0±,
(26, 27)/ C± of IC U501?
(26, 27)/ C± of IC U501?
Check IC U501 and peripheral circuits.
NO
Is Component Y/Pb/Pr signal sent to pin (2)/Y, (4)/Pb, (6)/Pr of
AV1(CN111) ?
AV1(CN111) ?
NO
Check the setting of an external input device that connects of
CN111.
CN111.
Refer to “The picture doesn't appear in all modes.”
Is Component Y/Pb/Pr signal sent to pin (AU26)/Y, (AT27)/Pb,
(AP27)/Pr of IC U401?
(AP27)/Pr of IC U401?
NO
Check the line between IC U401 and CN111.
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< During external connection > No picture on the monitor (1)
↓
No picture appears on SCART1 - connected monitor during the tuner (U/V) reception.
↓
TERMINAL_UNIT:
↓
↓NO
↓NO
< During external connection > No picture on the monitor (2)
SCART2:
↓
No picture from SCART1 appears on SCART2-connected monitor.
NOTE: Normally, if the screen during display is sent to SCART2, no picture is sent to SCART2.
NOTE: Normally, if the screen during display is sent to SCART2, no picture is sent to SCART2.
↓
TERMINAL_UNIT:
↓
↓NO
↓NO
Is CVBS signal output into pin (19) of CN151 (SCART1)?
YES
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 (AT31) CVBS signal output into pin (19) of CN151
(SCART1)?
(SCART1)?
YES
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 SCART1, AV3.
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 SCART1, AV3.
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 SCART1 is not the monitor output (output of the picture now watching).
5) 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 SCART1. (Specification)
Is CVBS signal output into pin (19) of CN152 (SCART2)?
YES
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 (AP31) of IC U401 into pin (19) of
CN152 (SCART2)?
CN152 (SCART2)?
YES
Check the line between CN152 and IC 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”, “AUTO”.
2) The picture is sent to the monitor in a CVBS signal if the source during display is TV, CVBS or Y/C of SCART1-2, AV3.
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”, “AUTO”.
2) The picture is sent to the monitor in a CVBS signal if the source during display is TV, CVBS or Y/C of SCART1-2, AV3.
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).
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 SCART1. (Specification)
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CHAPTER 5.
MAJOR IC INFORMATIONS
[1] MAJOR IC INFORMATIONS
1. MAJOR IC INFORMATIONS
1.1. U401 (MT5363LICG BGA-522)
GENERAL DESCRIPTION
The MediaTek MT5363LICG 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 transmitter, and an NTSC/PAL/SECAM TV decoder with
World-Leading Audio/Video Technology
:
The MT5363LICG supports most Full-HD video decoder standards, including H.264, MPEG4, MPEG2 and
JPEG. The MT5363LICG also supports MediaTek MDDi
TM
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 MT5363LICG family has built-in high resolution and high-quality audio codec
.
Rich Features for High Value Products
: The MT5363LICG family enables true single-chip experience. It integrates high-quality HDMI1.3, high speed
VGA ADC, dual-channel LVDS, USB2.0 receiver and multi-media decoder.
Key Features:
1.
DVB-T demodulator
2.
A transport demultiplexer
3.
A multi-standard video decoder
4.
An AC3/MPEG2 audio decoder
5. HDMI1.3
receiver
6. Audio
codec
7. Support
networking
GENERAL FEATURE LIST
Host CPU
ARM11
16K I-Cache and 16K D-Cache
4KB Instruction TCM
JTAG ICE interface
Watch Dog timers
Build-in CPI analyzer and Cache Hit Rate Meter
Transport Demultiplexer
Supports New generation 2 demux design
Supports one parallel or two serial transport stream input(s) and each rate could up to 80Mbps
Supports one serial/parallel transport stream output and its rate could up to 72Mbps
Supports ATSC, DVB, MPEG-2, MPEG-4, and H.264 transport stream and MPEG-2 program stream demultiplexing
Supports independent TS record and TS playback at the same time with independent data structure (PID setting/configuration/status)
Supports TS time-shifting and/or background record functions with computation power for up to 3 TS processes
Supports time stamp insertion for TS record and time stamp remove for TS playback
Supports DES (64-bit key ECB/CBC) / 3-DES (192 bit key ECB/CBC) / DVB-CSA / AES (128/192/256-bit key ECB/CBC) / Multi-2 de-scramblers for TS
Up to 8-PID even/odd descrambled keys for each of two transport stream sources (one from demodulator and the other from DRAM)
Supports AES (128/192/256-bit key ECB/CBC) record encryption and playback decryption
Supports AES (128/192/256-bit key ECB/CBC/CTR) encryption/decryption for all kinds of stream
Supports up to 8-PID even/odd descrambled keys for record encryption and playback decryption
Supports 32 PID filters for record only and 32 PID filters for playback
Supports up to 32 section filters and also positive / negative / mask section filtering scheme
Supports hardware CRC-32 calculation for all kinds of streams
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Supports DVB-CI 1.0, DVB-CI+, and CableCARD 2.0 (both S-mode and M-mode)
Supports simple trick play (Playback / Pause / Fast Forward (up to x32)) through USB or Flash
Supports AVI format data playback with DivX DRM decryption and WMV format data playback with ND (Network Device) DRM
Supports I/P/B picture or other start code search function
Supports a stream processor for stream process and video data start code detection
MPEG2 HD Decoder
MPEG2 MP@ML, MP@HL and MPEG-1 video standards
Supports de-blocking filter
MPEG1 Decoder
MPEG4 HD Decoder
ASP@L0~L5 (1920x1088 @ 30 fps)
H.264 (MPEG4 Part 10) HD Decoder (AVC)
[email protected], [email protected], BP@L3 (baseline) video standard
DivX (XviD) Decoder
RM (Real Media) HD Decoder
RV8 / 9 /10
Still Image decoding
JPEG (base-line or progressive)
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 alpha composition Bitblt
Stretch Bitblt
Font rendering by color expansion
YCbCr to RGB color space conversion
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
Two linking list OSDs with multiple color mode and both of them have scaler
Video Plane
Supports video capture and over scan.
Flesh tone management
Gamma correction
De-mosquito and de-blocking engine for all AV inputs
Built-in motion-adaptive 3D Noise Reduction
Color Transient Improvement (CTI)
2D Peaking
Saturation/hue adjustment
Brightness and contrast adjustment
Black and White level extender
Adaptive Luma/Chroma management
Automatic detect film or video source
3:2/2:2 pull down source detection
Supports maximum 1920 width motion-adaptive de-interlace.
Supports excellent low angle image processing.