Sharp LC-42LD266K (serv.man3) Service Manual ▷ View online
17
LC-42LD264
LC-42LD265
LC-42LD266
LC-42LD265
LC-42LD266
C 50
6
C 50
65
C 50
65 U
C 50
66
Step 2. Remove the rear cover.
Remove 23 screws as Fig 4.
Remove 23 screws as Fig 4.
Fig 4
Step 3. Remove the power board.
Remove 7 screws and unplug 2 cables as Fig 5.
Remove 7 screws and unplug 2 cables as Fig 5.
18
LC-42LD264
LC-42LD265
LC-42LD266
LC-42LD265
LC-42LD266
Fig 5
Step 4. Remove the scaler board and BKT.
Remove 5 screws and unplug 4 cables as Fig 6.
Fig 6
Step 5. Remove the speakers and connection wire as Fig 7.
Fig 7
19
LC-42LD264
LC-42LD265
LC-42LD266
LC-42LD265
LC-42LD266
Step 6. Remove the bracket.
Remove 8 screws as Fig 8.
Fig 8
Step 7. Remove the Keypad and IR board.
Remove 1 screw and unplug IR board, keypad as Fig 9.
Fig 9
Step 8. Remove the Deco,LVDS cable.
Remove 7 screws as Fig 10 and finish detaching.
Fig 10
20
LC-42LD264
LC-42LD265
LC-42LD266
LC-42LD265
LC-42LD266
CIRCUIT DESCRIPTIONS
7. MAJOR IC INFORMATION
7.1. U401 (MT5561JUDT) & U401 (MT5561PUDT only for LC-50LD266)
General Description The MediaTek MT5561JUDT 1Gb & The MediaTek MT5561PUDT 2Gb family consists of a front-end
demodulator, a backend decoder and a TV controller and offers high integration for advanced applications. It integrates a
transport de-multiplexer, a high definition video decoder, an audio decoder, a two-link LVDS transmitter, a mini-LVDS
transmitter, and an NTSC/PAL/SECAM TV decoder with a 3D comb filter (NTSC/PAL). The MT5561PUDT 2Gb enables
consumer electronics manufacturers to build high quality, low cost and feature-rich DTV. World-Leading Audio/Video
Technology: The MediaTek MT5561JUDT 1Gb & The MT5561PUDT 2Gb support Full-HD MPEG1/2/4/h.264 / VC1/ AVS
video decoder standards, and JPEG. The MediaTek MT5561JUDT 1Gb & The MT5561PUDT 2Gb also support MediaTek
MDDiTM de-interlace solution which 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 a natural, deep colors and true
studio quality video. Moreover, the MediaTek MT5561JUDT 1Gb & the MT5561PUDT 2Gb family has built-in high resolution
and high-quality audio codec. Rich Features for High Value Products: The MediaTek MT5561JUDT 1Gb & The
MT5561PUDT 2Gb family enable true single-chip experience. It integrates high-quality HDMI1.4a, high speed VGA ADC,
two-link LVDS, , USB2.0 receiver, Ethernet MAC+PHY, single core CPU, and DVB-T/DVB-C demodulators . WW Common
Platform Capability: The MediaTek MT5561JUDT 1Gb & The MT5561PUDT 2Gb family supports, DVB-T, and DVB-C
demodulation functions. It reserves transport stream inputs for external demodulators for other countries or areas. TV maker
can easily port the same UI to worldwide TV models. First-class adjacent and co-channel rejection capability grants excellent
reception. Professional error-concealment provides stable, smooth and mosaic-free video quality
.
Key Features
Worldwide multi-standard analog TV demodulator/DVB-T/DVB-C demodulators demodulators
1. Powerful CPU core
2.
A
transport
de-multiplexer
3. A muti-standard video decoder
4. Rich format audio codec
5.
Ethernet
MAC+PHY
6. Local dimming (LED backlight) (option)
7.
Panel
overdrive
control
8.
Two-link
LVDS
FEATURE LIST
Host CPU
ARM based CPU 700MHz
I-Cache and D-Cache for core ARM
Supports booting from serial flash, NAND flash
Supports security boot
JTAG ICE interface
Watchdog
timers
Transport Demultiplexer
New generation demux design for transport stream (TS) process
Supports internal CI condition : 1 parallel TS input/ 2 serial inputs.
Supports CI/CI+ interface and controller
Supports DVB-T/T2, DVB-C and input data rate and format
MPEG1/2 Decoder
MPEG
MP@ML,
MP@HL
Supports de-blocking filter
Full-HD
60FPS
decoder
MPEG4 Decoder
Click on the first or last page to see other LC-42LD266K (serv.man3) service manuals if exist.