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No. 0210
32LD8700C
32LD8700U
32LD8700TU
32LD8600
SERVICE MANUAL
MANUEL D'ENTRETIEN
WARTUNGSHANDBUCH
32LD8A10
37LD8600
37LD8700C
37LD8700U
CAUTION:
Before servicing this chassis, it is important that the service technician read the “Safety
Precautions” and “Product Safety Notices” in this service manual.
Data contained within this Service
manual is subject to alteration for
improvement.
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.
Les données fournies dans le présent
manuel d’entretien peuvent faire l’objet
de modifications en vue de perfectionner
le produit.
VORSICHT:
Vor Öffnen des Gehäuses hat der Service-Ingenieur die „Sicherheitshinweise“ und „Hinweise
zur Produktsicherheit“ in diesem Wartungshandbuch zu lesen.
Die in diesem Wartungshandbuch
enthaltenen Spezifikationen können sich
zwecks Verbesserungen ändern.
SPECIFICATIONS AND PARTS ARE SUBJECT TO CHANGE FOR IMPROVEMENT
COLOUR TELEVISION
October 2006
647384556.001.png
TABLE OF CONTENTS
1 INTRODUCTION
1
2 TUNER
1
3 IF PART (TDA9886)
1
4 MULTI STANDARD SOUND PROCESSOR
2
5 VIDEO SWITCH TEA6415
2
6 AUDIO AMPLIFIER STAGE WITH TPA3004D2
2
7 MICROCONTROLLER
3
8 EEPROM 24C32
3
9 CLASS AB STEREO HEADPHONE DRIVER TDA1308
3
10 SAW FILTERS
3
11 IC DESCRIPTIONS
4
11.1. TEA6415C
5
11.1.1.
General Description
5
11.1.2.
Features
5
11.1.3.
Pinning
5
11.2. 24LC02
6
11.2.1.
Description
6
11.2.2.
Features
6
11.2.3.
Pinning
6
11.3. TCET1102G Optocoupler
7
11.3.1.
General Description
7
11.3.2.
General Features
7
11.3.3.
Applications
8
11.4. SVP-EX 52
8
11.4.1.
General Description
8
11.5. TL431
8
11.5.1.
General Description
8
11.5.2.
Features
8
11.6. 24C32
8
11.6.1.
General Description
8
11.6.2.
Features
8
11.6.3.
Pinning
9
11.7. 74LVC14A
10
11.7.1.
Description
10
11.7.2.
Features
10
11.7.3.
Pinning
10
11.8. TEA6420
11
11.8.1.
Features
11
11.8.2.
Description
11
11.8.3.
Pin Connections
11
11.9. CS4334
11
11.9.1.
Features
11
11.9.2.
General Description
11
11.9.3.
Pin Descriptions
12
11.10. GAL16LV8
12
11.10.1.
Description
12
11.10.2.
Features
12
11.10.3.
Pin Connections
13
11.11. K6R4008V1D
13
11.11.1.
Description
13
11.11.2.
Features
13
11.11.3.
Pin Description
14
11.12. L6562
14
11.12.1.
Features
14
11.12.2.
Description
14
11.12.3.
Pin Description and Descriptions
15
i
TFT TV Service Manual
11.13. LM1117
15
11.13.1.
General Description
15
11.13.2.
Features
15
11.13.3.
Applications
15
11.13.4.
Connection Diagrams
16
11.14. LM317
16
11.14.1.
General Description
16
11.14.2.
Features
16
11.14.3.
Pin Description
16
11.15. LM809
16
11.15.1.
General Description
16
11.15.2.
Features
16
11.15.3.
Pinning
17
11.16. MSP34X1G
17
11.16.1.
Introduction
17
11.16.2.
Features
18
11.16.3.
Pin Connections
18
11.17. M29W040B
20
11.17.1.
Description
20
11.17.2.
Features
20
11.17.3.
Pin Descriptions
21
11.18. MC33202
21
11.18.1.
General Description
21
11.18.2.
Features
21
11.18.3.
Pin Connections
21
11.19. PCF8574
22
11.19.1.
General Description
22
11.19.2.
Features
22
11.19.3.
Pinning
22
11.20. PI5V330
23
11.20.1.
General Description
23
11.21. SDA55XX (SDA5550)
23
11.21.1.
General Description
23
11.22. Sil 9993
23
11.22.1.
General Description
23
11.22.2.
Features
24
11.23. NCP1014
24
11.23.1.
General Description
24
11.23.2.
Features
24
11.23.3.
Pin Description and Descriptions
25
11.24. SN74CB3Q3305
25
11.24.1.
General Description
25
11.24.2.
Features
25
11.24.3.
Pin Connections
26
11.25. ST24LC21
26
11.25.1.
Description
26
11.25.2.
Features
26
11.25.3.
Pin Connections
26
11.26. LM2576
27
11.26.1.
General Description
27
11.26.2.
Features
27
11.26.3.
Pin Description
27
11.27. TDA1308
27
11.27.1.
General Description
27
11.27.2.
Features
27
11.27.3.
Pinning
28
ii
TFT TV Service Manual
11.28. TDA9886
28
11.28.1.
General Description
28
11.28.2.
Features
28
11.28.3.
Pinning
28
11.29. TPA3004D2
29
11.29.1.
General Description
29
11.29.2.
Features
29
11.29.3.
Pinning
30
11.30. µPA672T
31
11.30.1.
General Description
31
11.30.2.
Features
31
11.30.3.
Pin Connection
31
11.31. VPC3230D
31
11.31.1.
General Description
31
11.31.2.
Pin Connections and Short Descriptions
32
12 SERVICE MENU SETTINGS
33
12.1. Picture Adjust
33
12.2. SOUND1
34
12.3. SOUND 2
34
12.4. Options
34
12.5. TV Norm
35
12.6. Features
35
12.7. Teletext
35
12.8. Source
35
12.9. Menu Languages 1 & 2
35
13 BLOCK DIAGRAM
36
14 SCHEMATIC DIAGRAMS
37
14.1. Main Board
37
14.2. Power Board
45
14.3. Front AV Board
50
14.4. Amplifier Board
51
15 CIRCUIT BOARD DIAGRAMS
52
15.1. Main Board
52
16 SPARES PARTLIST
53
17 WALL MOUNT TEMPLATE DIAGRAM (32-INCH MODELS ONLY)
54
iii
TFT TV Service Manual
1. INTRODUCTION
TFT TVis aprogressiveTV controlsystemwithbuilt-in de-interlacer and scaler . It usesa
1366*768 panel with 16:9 aspect ratio. The TV 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’ including
German and NICAM stereo. Sound system output is supplying 2x8W (10%THD) for stereo 8ȍ
speakers. The chassis is equipped with many inputs and outputs allowing it to be used as a center of a
media system.
It supports the following peripherals:
2 SCART sockets
1 AV input (CVBS + Stereo Audio)
1 SVHS input
1 Stereo Headphone input
1 Component input (YPbPr + Stereo Audio)
1 D-Sub 15 PC input
1 HDMI input
1 Stereo audio input for PC
Audio line out is taken from the scart with given scart-to-line out connector
2. TUNER
The tuners used in the design are combined VHF, UHF tuners suitable for CCIR systems B/G, H, L, L’,
I/I’, and D/K. The tuning is available through the digitally controlled I 2 C bus (PLL). Below you will find
info on one of the Tuners 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 2 C-bus
4. Off-air channels, S-cable channels and Hyper band
5. World standardised mechanical dimensions and world standard pinning
6. Compactsize
7. 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 (TDA9886)
The TDA9886 is an alignment-free multistandard (PAL, SECAM and NTSC) vision and sound IF signal
PLL. The following figure shows the simplified block diagram of the integrated circuit.
The integrated circuit comprises the following functional blocks:
VIF amplifier, Tuner and VIF-AGC, VIF-AGC detector, Frequency Phase-Locked Loop (FPLL) detector,
VCO and divider, Digital acquisition help and AFC, Video demodulator and amplifier, Sound carrier trap,
SIF amplifier, SIF-AGC detector, Single reference QSS mixer, AM demodulator, FM demodulator and
1
TFT TV Service Manual

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