Introduction; Tuner Specification - Sharp 32LF-94EC Service Manual

1.INTRODUCTION

11AK53 is a 100Hz color television DIGITAL ONE CHIP SYSTEM (DOC) capable of driving 28"4:3/16:9
SF/RF, 29"4:3 real flat, 32" 16:9 SF/RF, 33"4:3 and 34' 4:3 real flat picture tubes.
The chassis is capable of operation in PAL, SECAM, NTSC (playback) color standards and multiple
transmission standards as B/G, D/K, I/I', and L/L´.
Sound system output is supplying 2x10W (10%THD) for left and right outputs of 8ohm speakers.
TV supports the level 1.5 teletext standard. It is possible to decode transmissions including high
graphical data.
The chassis is equipped with two full EuroScarts, one SCART for AV input/output, one front-AV input,
one back-AV input, one headphone output, one SVHS input (via SCART and SVHS connector), two
external speaker outputs (left and right), one audio line output.

2.TUNER SPECIFICATION

The hardware and software of the TV is suitable for tuners, supplied by different companies, which are
selected from the Service Menu. These tuners can be 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
(PLL). Below you will find info on one of the Tuners in use.
General description of UV1316 MK3(Philips) /CTF55XX (Thomson):
UV1316 MK3 (Philips) /CTF55XX (Thomson) tuners, which are designed to meet a wide range of
applications are PLL tuners; 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 Tuner:
1. Those tuners are 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
4. Off-air channels, S-cable channels and Hyperband
5. World standardized mechanical dimensions and world standard pinning
6. Compact size
7. Complies to "CENELEC EN55020" and "EN55013"
Pinning:
1. Gain control voltage (AGC)
2. Tuning voltage
3. I²C-bus address select
4. I²C-bus serial clock
5. I²C-bus serial data
6. Not connected
7. PLL supply voltage
8. ADC input
9. Tuner supply voltage*
10. Symmetrical IF output 1
11. Symmetrical IF output 2
*33V is obtained from FBT of large signal board.
AK53 D.O.C. Service Manual
2
C-bus
: 4.0V, Max: 4.5V
: Max: 5.5V
: Min:-0.3V, Max: 5.5V
: Min:-0.3V, Max: 5.5V
: 5.0V, Min: 4.75V, Max: 5.5V
: 33V, Min: 30V, Max: 35V
1
2
C bus
22/03/2004