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32LD8D20EA 데이터시트 PDF




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기능 TFT LCD TV SERVICE MANUAL
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32LD8D20EA 데이터시트, 핀배열, 회로
SERVICE MANUAL
MANUEL D'ENTRETIEN
WARTUNGSHANDBUCH
CAUTION:
Before servicing this chassis, it is important that the service technician read the “Safety
Precautions” and “Product Safety Notices” in this service manual.
ATTENTION:
Avant d’effectuer l’entretien du châssis, le technicien doit lire les «Précautions de sécurité»
et les «Notices de sécurité du produit» présentés dans le présent manuel.
VORSICHT:
Vor Öffnen des Gehäuses hat der Service-Ingenieur die „Sicherheitshinweise“ und „Hinweise
zur Produktsicherheit“ in diesem Wartungshandbuch zu lesen.
No. 0243
32LD8D20E
32LD8D20EA
32LD8D20U
32LD8D20UA
32LD8D20UC
37LD8D20E
37LD8D20U
37LD8D20UA
37LD8D20UC
Data contained within this Service
manual is subject to alteration for
improvement.
Les données fournies dans le présent
manuel d’entretien peuvent faire l’objet
de modifications en vue de perfectionner
le produit.
Die in diesem Wartungshandbuch
enthaltenen Spezifikationen können sich
zwecks Verbesserungen ändern.
Contents
1. Introduction
11. Service Menu Settings
2. Tuner
12. Block Diagrams
3. Audio Amplifier Stage
13. Troubleshooting Guide
4. Power Stage
14. Connectors
5. Microcontroller (VCTP)
15. Concept ICs
6. DRX 3961A
16. Replacement Parts
7. Serial 64K I2C EEPROM
17. Assembly Drawing
8. Class AB Stereo Headphone
18. Schematic Diagrams
Driver
19. PCB Layout Diagrams
9. SAW Filter X6966M
10. IC Descriptions
SPECIFICATIONS AND PARTS ARE SUBJECT TO CHANGE FOR IMPROVEMENT
Colour Television
December 2007




32LD8D20EA pdf, 반도체, 판매, 대치품
3.3 Applications
x Surround Sound DVD Systems
x Televisions
x Flat Panel Monitors
x Multimedia Computers
x Home Stereo Systems
3.4 Absolute Ratings
3.5 Pinning
4. POWER STAGE
The DC voltages required at various parts of the chassis and inverters are provided by a
main power supply unit and power interface board. The main power supply unit is
designed for 24V and 12V DC supply. Power stage which is on-chasis generates +24V
for audio amplifier, 1.8V and 3.3V stand by voltage and 8V, 12V, 5V and 3.3Vsupplies
for other different parts of the chassis.

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32LD8D20EA 전자부품, 판매, 대치품
The TVT provides an integrated general-purpose, fully 8051-compatible microcontroller
with television-specific hardware features. The microcontroller has been enhanced to
provide powerful features such as memory banking, data pointer, additional interrupts,
shared memory access etc.
The TVT has an internal XRAM of 32 KB and a BOOT ROM of 4 KB. For operation the
code is fetched from a 16bit FLASH, which can be addressed up to 1 MByte.
The controller with dedicated hardware does most of the internal TTX acquisition
processing, transfers data to/from external memory interface, and receives/transmits
data via I2C-bus interface. In combination with dedicated hardware, the slicer stores
TTX data in a VBI buffer of 1 KB. The microcontroller firmware performs all the
acquisition tasks (hamming and parity checks, page search, and evaluation of header
control bits) once per field. Additionally, the firmware can provide high-end Teletext
features like Packet-26 handling, FLOF/TOP and list-pages. The interface-to-user
software is optimised for minimal overhead. TVT is realised in deep submicron
technology with 1.8 V supply voltage and 3.3 V I/O (TTL compatible).
x 16 analog video inputs (4xCVBS/Y/C + 3xRGB/YCrCb/YPrPb)
x Video input switch matrix
x 3 analog video outputs (integrated Y+C adder)
x 24-bit RGB/H/V/clk input (e.g. ext. DVI decoder) or 656 8bit input
x 656 8bit input/output (e. g. for external high-end up conversion by FRCA)
x Multi-standard color decoder PAL/NTSC/SECAM including all substandards
x 2D adaptive comb filter for PAL/NTSC with vertical peaking
x 3D-comb filter for PAL/NTSC (Optional)
x Macrovision compliant multi-standard sync processing
x Trilevel sync slicer for HDTV
x Macrovision detection
x High-quality soft mixer controlled by Fast Blank (alpha blending)
x Fastblank monitor via I2C
x Noise measurement
x Letterbox detection (auto-wide)
x Split screen (OSD and video side by side) and AV PIP
5.4 Controller Features
The TVT is a Teletext decoder for decoding World System Teletext data, as well as
Video Programming System (VPS), Program Delivery Control (PDC), and Wide-Screen
Signalling (WSS) data used for PALplus transmissions (line 23). The device also
supports Closed Caption acquisition and decoding.
The TVT provides an integrated general-purpose, fully 8051-compatible microcontroller
with television-specific hardware features. The microcontroller has been enhanced to
provide powerful features such as memory banking, data pointer, additional interrupts,
shared memory access etc.
x High performance 8-bit microcontroller, 8051 instruction set compatible
x 81 MHz system clock, two machine cycles per instruction
x On-chip debug support (OCDS)
x Up to 512 kByte in system program Flash
x 256 byte on-chip program RAM
x 128 byte on-chip extended stack RAM

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