Magnavox 13MT1433 - 13i Mono Manual de usuario

Circuit Descriptions, List of Abbreviations, and IC Data Sheets Index of this chapter: 1. Introduction 2. Power Supply 3. Deflection 4. Control 5. Tun

The East-West drive circuit realizes them all. The settings can be changed by a remote control. All changed data will be stored into the NVM after the

BCL When the BCL pin voltage goes to 2.8 V, the Hercules will start to limit CONTRAST gain. When it reaches 1.7 V, then the BRIGHTNESS gain limit w

operation. When the EHT goes too high, the voltage across R3482 will tend to increase as well, while the voltage across D6481 is fixed. Up to certain

During the first half of the intensity increase, the scan velocity is increased (thus decreasing the current density by spreading it on a wider area).

Figure: Micro Controller block diagram Basic Specification The Micro Controller operates at the following supply voltages: +3.3 V_dc at pins 33,

The following table shows the ports used for the L04 control: Table: Micro Controller ports overview The description of each functional pin is

Table: LED signal diversity SCL. This is the clock wire of the two-wire single master bi-directional I2C bus. SDA. This is the data wire of the

SDM. This pin is configured as Open Drain during the cold start only. If this pin is shorted to ground during cold start, it will enter the SDM mo

Table: Pinning Tuner Pin assignment of the several SAW filters (depends on region/execution): Table: Pinning SAW filters The table below s

Note: The logic level is measured at the base of transistor 7001. Option Settings The option settings for the Tuner type can be found in Option se

Power Supply: Adapted to supply the Hercules IC, and to enable 0.5 W Standby power dissipation. Also provisions are made for future extensions like D

Diversity The basic diversity of the Audio/Video Source Select is between the Mono and the Stereo sets and the number of Cinch/SCART's as specif

Table: SCART Source Select diversity 75 AUDIO IN2 R86 DVBO/IFVO/FMRO N.C.65 CVBSO/PIP PIP application56 Y SYNC 100 nF55 Y OUT 100 nF53 V OUT (SW

Audio Source Selection The signals coming out of the DEMDEC (internal demodulator/decoder block of the Hercules) are selectable and consist of the

Tint (hue) on UV signals (including DVD). Peaking, Coring, Black \ Blue \ White-stretch. Transfer-Ratio and Scavem (also on TXT). Features The fea

Figure: Video processing block diagram LTI/CTI The TDA9178 is an I2C-bus controlled IC (INCREDIBLE chip) with YUV interface. This IC can do mainly

Table: Pinning overview TDA9178 Options The option settings allow for process of the video as per set specification. The option settings can be

Option Byte 6 Bit 7: OP_PERSONAL_ZAPPING, Bit 6: Bit 5: OP_FMTRAP Bit 4: OP_COMBFILTER Bit 3: OP_ACTIVE_CONTROL Bit 2: OP_VIDEO_TEXT Bit 1 :O

dBx (no dBx noise reduction). For the case of AP , the standard consists of BG/DK/I/M for a Multi-System set. The diversity here will then depends on

Abbreviation list 7 Supply Voltage (positive) + 16 V_dc8 Inverting inputs L and R 0 V9 Input Right Input AC signalAbbreviation Description2CS2 Car

Component Video InputDACDigital to Analogue ConverterDBXDynamic Bass Expander or noise reduction system in BTSCD/KMonochrome TV system. Sound carrier

Figure: Block diagram power supply Stdby_con signal The Hercules generates this signal. This line is logic “low” (0 V) under normal operation and

NTSCNational Television Standard Committee. Color system mainly used in North America and Japan. Color carrier NTSC M/N = 3.579545 MHz, NTSC 4.43 = 4.

IC Data Sheets This section shows the internal block diagrams and pin layouts of ICs that are drawn as 'black boxes' in the electrical diag

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Figure: Internal Block Diagram and Pin Configuration Página 33 de 33SPMS11/01/2006

Figure: Timing diagram Standby Power ON - To Semi Standby - Out of Semi Standby - Power OFF Página 4 de 33SPMS11/01/2006

Figure: Timing diagram Semi Standby Startup Sequence When the set is connected to the AC power, the rectified line voltage (via winding 4-5 of L5

As C2532 of IC7531 is charged, it will also start to charge the V_cc capacitor (C2511) of IC7511. Via resistor R3519 and C2511, the TEA1506 starts

Standby Mode In this mode, IC7511 (TEA1506) will be totally disabled. So there is no voltage on the main transformer output. But IC7531 (TEA1523)

Pin 63 is the SANDCASTLE output (contains all sync info) and also HORIZONTAL FLYBACK (HFB) input. Pin 97 is the EHT tracking/over-voltage protection p

Linearity Correction Because the deflection coil has a certain resistance, a picture without any linearity issues cannot be expected. L5401 is the li