VESTEL 17MB15E-5, Service Manual

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4. INTRODUCTION
42” Plasma TV is a progressive TV control system with built-in
de-interlacer
and
scaler
. It uses a 852x480
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 2x10W (10%THD) for stereo 8
Ω speakers. The chassis is equipped with many inputs
and outputs allowing it to be used as a center of a media system.
It supports following peripherals:
3 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
1 Stereo audio output
1 Subwoofer output
5. 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 Hyperband
5. World standardised mechanical dimensions and world standard pinning
6. Compact
size
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
6. 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: