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 châassis, 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.
SERVICE MANUAL
MANUEL D'ENTRETIEN
WARTUNGSHANDBUCH
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.
SPECIFICATIONS AND PARTS ARE SUBJECT TO CHANGE FOR IMPROVEMENT
Plasma TV
September 2004
No. 0204
17LD4220
17LD4220U
THIS PAGE IS INTENTIONALLY LEFT BLANK
i
17" TFT TV Service Manual
21/09/2004
TABLE OF CONTENTS
1.
INTRODUCTION ...................................................................................................................................... 1
2.
TUNER...................................................................................................................................................... 1
3.
IF PART (TDA988X) ................................................................................................................................. 1
4.
MULTI STANDARD SOUND PROCESSOR ............................................................................................ 1
5.
AUDIO AMPLIFIER STAGE WITH TPA3003D2 ...................................................................................... 2
6.
POWER .................................................................................................................................................... 2
7.
MICROCONTROLLER SDA55XX............................................................................................................ 2
7.1.
General Features............................................................................................................................... 2
7.2.
External Crystal and Programmable Clock Speed............................................................................ 2
7.3.
Microcontroller Features.................................................................................................................... 2
7.4.
Memory.............................................................................................................................................. 2
7.5.
Display Features................................................................................................................................ 2
7.6.
ROM Characters................................................................................................................................ 3
7.7.
Acquisition Features .......................................................................................................................... 3
7.8.
Ports .................................................................................................................................................. 3
8.
SERIAL ACCESS CMOS 16K (2048*8) EEPROM ST24C16 .................................................................. 3
9.
CLASS AB STEREO HEADPHONE DRIVER TDA1308 ......................................................................... 3
10.
SAW FILTERS.......................................................................................................................................... 3
11.
IC DESCRIPTIONS AND INTERNAL BLOCK DIAGRAM ....................................................................... 4
11.1.
LM1117.............................................................................................................................................. 4
11.1.1.
General Description ................................................................................................................. 4
11.1.2.
Features .................................................................................................................................... 4
11.1.3.
Applications.............................................................................................................................. 4
11.1.4.
Connection Diagrams .............................................................................................................. 4
11.2.
LM2576.............................................................................................................................................. 5
11.2.1.
General Description ................................................................................................................. 5
11.2.2.
Features .................................................................................................................................... 5
11.2.3.
Pin description ......................................................................................................................... 5
11.3.
LM317T ............................................................................................................................................. 6
11.3.1.
Description................................................................................................................................6
11.3.2.
Features .................................................................................................................................... 6
11.4.
ST24LC21 ......................................................................................................................................... 7
11.4.1.
Description................................................................................................................................7
11.4.2.
Features .................................................................................................................................... 7
11.4.3.
Pin connections........................................................................................................................ 7
11.5.
TEA5114A ......................................................................................................................................... 8
11.5.1.
General description ................................................................................................................. 8
11.5.2.
Features .................................................................................................................................... 8
11.5.3.
Pin Connections ....................................................................................................................... 8
11.6.
TEA6415............................................................................................................................................ 9
11.6.1.
General description ................................................................................................................. 9
11.6.2.
Features .................................................................................................................................... 9
11.6.3.
Pinning ...................................................................................................................................... 9
11.7.
VPC3230D....................................................................................................................................... 10
11.7.1.
General Description ............................................................................................................... 10
11.7.2.
Pin Connections and Short Descriptions ............................................................................ 10
11.8.
SDA55XX (SDA5550)...................................................................................................................... 12
11.8.1.
General description ............................................................................................................... 12
11.9.
TPA3003D2 ..................................................................................................................................... 13
11.9.1.
General Description ............................................................................................................... 13
11.9.2.
Features .................................................................................................................................. 13
11.9.3.
Pinning .................................................................................................................................... 13
11.10.
TDA9885/86 .................................................................................................................................... 15
11.10.1.
General description ............................................................................................................... 15
11.10.2.
Features .................................................................................................................................. 15
11.10.3.
Pinning .................................................................................................................................... 15
11.11.
TDA1308 ......................................................................................................................................... 16
ii
17" TFT TV Service Manual
21/09/2004
11.11.1.
General Description ............................................................................................................... 16
11.11.2.
Features .................................................................................................................................. 16
11.11.3.
Pinning .................................................................................................................................... 16
11.12.
PI5V330........................................................................................................................................... 17
11.12.1.
General description ............................................................................................................... 17
11.12.2.
Features .................................................................................................................................. 17
11.12.3.
Pin Descriptions ..................................................................................................................... 17
11.13.
GM6015........................................................................................................................................... 18
11.13.1.
General description ............................................................................................................... 18
11.13.2.
Features .................................................................................................................................. 18
11.14.
AD9883A ......................................................................................................................................... 19
11.14.1.
General description ............................................................................................................... 19
11.14.2.
Features .................................................................................................................................. 19
11.14.3.
Pin Descriptions ..................................................................................................................... 19
11.15.
MC141585 ....................................................................................................................................... 22
11.15.1.
General description ............................................................................................................... 22
11.15.2.
Features .................................................................................................................................. 22
11.15.3.
Pin Description ....................................................................................................................... 22
11.16.
MC34063 ......................................................................................................................................... 24
11.16.1.
Description.............................................................................................................................. 24
11.16.2.
Features .................................................................................................................................. 24
11.16.3.
Pin connections...................................................................................................................... 24
11.17.
MSP34X0G...................................................................................................................................... 25
11.17.1.
Introduction ............................................................................................................................ 25
11.17.2.
Features .................................................................................................................................. 25
11.17.3.
Pin connections...................................................................................................................... 26
11.18.
DS90C385 ....................................................................................................................................... 28
11.18.1.
General Description ............................................................................................................... 28
11.18.2.
Features .................................................................................................................................. 28
11.18.3.
Pinning .................................................................................................................................... 28
11.19.
NDS8947 ......................................................................................................................................... 29
11.19.1.
General Description ............................................................................................................... 29
11.19.2.
Features .................................................................................................................................. 29
12.
SERVICE MENU SETTINGS ................................................................................................................. 30
12.1.
ADJUST MENU SETTINGS ............................................................................................................30
12.2.
OPTIONS MENU SETTINGS.......................................................................................................... 31
12.3.
APS WSS TEST MENU .................................................................................................................. 36
13.
BLOCK DIAGRAM.................................................................................................................................. 37
14.
CIRCUIT DIAGRAMS ............................................................................................................................. 38
1
17" TFT TV Service Manual
21/09/2004
1. INTRODUCTION
17" TFT-LCD TV is a Progressive TV control system based on the
µ-controller SDA555X, with built-in de-
interlacer and scaler.
TFT TV is a progressive scan flicker free colour television with PC input, driving an WXGA(1280*768)
panel with 16:9 aspect ratio. The chassis is capable of operation in PAL, SECAM, NTSC (playback) colour
standards and multiple transmission standards as B/G, D/K, I/I', and L/L´. Sound system output is
supplying 2x3W (10%THD) speakers. The chassis is equipped with two full SCART's, one back-AV, one
SVHS, one D-Sub 15 (PC) input, one PC stereo audio input and one line out (left and right) and one HP
outputs.
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 I
2C bus (PLL). Below you will find info on the Tuner in use.
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.
Features of UV1316:
1.
Member of the UV1300 family small sized UHF/VHF tuners
2.
Systems CCIR: B/G, H, L, L', I and I'; OIRT: D/K
3.
Digitally controlled (PLL) tuning via I
2C-bus
4.
Off-air channels, S-cable channels and Hyper band
5.
Compact size
6.
Complies to "CENELEC EN55020" and "EN55013"
Pinning:
1.
Gain control voltage (AGC)
:
4.0V, Max: 4.5V
2.
Tuning voltage
3.
I²C-bus address select
:
Max: 5.5V
4.
I²C-bus serial clock
:
Min:-0.3V, Max: 5.5V
5.
I²C-bus serial data
:
Min:-0.3V, Max: 5.5V
6.
Not connected
7.
PLL supply voltage
:
5.0V, Min: 4.75V, Max: 5.5V
8.
ADC input
9.
Tuner supply voltage
:
33V, Min: 30V, Max: 35V
10.
Symmetrical IF output 1
11.
Symmetrical IF output 2
3. IF PART (TDA988X)
The TDA9885 is an alignment-free single standard (without positive modulation) vision and sound IF signal
PLL.
The TDA9886 is an alignment-free multistandard (PAL, SECAM and NTSC) vision and sound IF signal
PLL demodulator for positive and negative modulation including sound AM and FM processing.
Both devices can be used for TV, VTR, PC and set-top box applications.
4. MULTI STANDARD SOUND PROCESSOR
The MSP34x0G family of single-chip Multistandard Sound Processors covers the sound processing of all
analog TV-Standards worldwide, as well as the NICAM digital sound standards. The full TV sound
processing, starting with analog sound IF signal-in, down to processed analog AF-out, is performed on a
single chip.
These TV sound processing ICs include versions for processing the multichannel television sound (MTS)
signal conforming to the standard recommended by the Broadcast Television Systems Committee (BTSC).
The DBX noise reduction, or alternatively, Micronas Noise Reduction (MNR) is performed alignment free.
Other processed standards are the Japanese FM-FM multiplex standard (EIA-J) and the FM Stereo Radio
standard.
Current ICs have to perform adjustment procedures in order to achieve good stereo separation for BTSC
and EIA-J. The MSP 34x1G has optimum stereo performance without any adjustments.