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Hitachi Power Semiconductor Device Electronic Components Datasheet

32LD8D20E Datasheet

TFT LCD TV SERVICE MANUAL

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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


Hitachi Power Semiconductor Device Electronic Components Datasheet

32LD8D20E Datasheet

TFT LCD TV SERVICE MANUAL

No Preview Available !

1. INTRODUCTION
17MB22 Main Board consists of Micronas concept , VCTP as controller. This IC is
capable of handling Audio processing, video processing, motion adaptive up
conversion(MAU), Scaling-Display processing and FPD control (DPS), unified memory
for audio video and Text, 3D comb filter, PC connectivity, OSD and text processing.
TV supports PAL, SECAM, NTSC colour standards and multiple transmission standards
as B/ G, D/K, I/I’ and L/L’ including German and NICAM stereo.
Sound system output is supplying 2x 8W (10%THD) for stereo 8Ω speakers
Supported peripherals are:
1 RF input VHF1, VHF3, UHF @ 75Ohm
1 FAV input
2 SCART sockets
1 SVHS input
1 Stereo Headphone input
1 YPbPr
1 PC input
1 HDMI input
1 Stereo audio input for PC
2. TUNER
As the thickness of the TV set has a limit, a horizontal mounted tuner is used in the
product, which is suitable for CCIR systems B/G, H, L/ L’, I/I’ and D/ K. The tuning is
available through the digitally controlled I2C bus (PLL). Below you will find info on the
Tuner in use.
2.1 General description of UV1316
The UV1316 tuner belongs to the UV 1300 family of tuners, which are designed to meet
a wide range of applications. It is a combined VHF, UHF tuner suitable for CCIR
systems B/G, H, L, L’, I and I’. The low IF output impedance has been designed for
direct drive of a wide variety of SAW filters with sufficient suppression of triple transient.
2.2 Brief description
The DTT 713XX is designed for digital terrestrial reception in VHFIII and UHF, compliant
with the European digital terrestrial standard ETS 300744. In addition it covers all channels
from 44.25MHz to 863.25MHz. It is a two band concept, VHF and UHF, with VHF switched
between VHF low (VHFI) and VHF high (VHFIII). Optional an antenna loop through function,
a combiner to feed through an RF-modulator signal to the TV output, a buffered 4MHz
crystal oscillator output, a DC/DC converter to generate 32V tuning voltage can be provided.
Instead of RF modulator input, an antenna power supply input is possible.
The DTT 713XX has the possibility to activate an internal wide band RF AGC.
Tuning, band switching and internal RF AGC is controlled via I2C bus. The metal housing
is in world standard tuner size. The module complies with the requirements of radiation,
signal handling capability and immunity interference of CENELEC standards EN 55013
and EN 55020.


Part Number 32LD8D20E
Description TFT LCD TV SERVICE MANUAL
Maker Hitachi
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32LD8D20E Datasheet PDF





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