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Sharp 32LF-94EC Service Manual

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PAL
/ SECAM
B/G, I
ELECTRICAL SPECIFICATIONS ........................................................................................ 3
IMPORTANT SERVICING NOTES ...................................................................................... 4
CONTROLS & TERMINALS ................................................................................................ 5
PRINTED WIRING BOARD LAYOUT ................................................................................. 7
PARTS LISTING ................................................................................................................... 9
HOW TO UPDATE THE TECHNICAL INFORMATION ...................................................... 19
SHARP CORPORATION
SERVICE MANUAL
SYSTEM COLOUR TELEVISION
L/L', B/G, D/K
32LF-94EC
MODEL
In the interests of user safety (required by safety
regulations in some countries) the set should be re-
stored to its original condition and only parts identi-
cal to those specified should be used.
In order to service the model 32LF-94EC, refer to
the
AK-53
(SE00AK53CHA00).
CONTENTS
1
Issued: 22
AK- 53
CHASSIS
Chassis
Service
This document has been published to
be used for after sales service only.
32LF-94EC
SE0032LF94C00
July 2004
nd
Manual

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  • Page 1: Table Of Contents

    In the interests of user safety (required by safety regulations in some countries) the set should be re- stored to its original condition and only parts identi- cal to those specified should be used. In order to service the model 32LF-94EC, refer to AK-53 Chassis Service Manual (SE00AK53CHA00).
  • Page 2 32LF-94EC SERVICE MANUAL UPDATE LOG SHEET Technical Report No. Application Cause / Solution Part No. Page No. Data /Serial No. Technical Bulletin No. Use this page to keep any special servicing information as Technical Report (Bulletin), Technical Information, etc. If only part number changes are required, just change part number directly the part number in the Parts Listing Section.

  • Page 3: Electrical Specifications

    Y=0.306 ± 0.015 Specifications are subject to change without prior notice. MODEL DESTINATION (Operation Manual Languages) 32LF-94EC: Czech, English, Hungarian, Polish, Romanian, Russian, Slovakian WARNING The chassis in this receiver is partially hot. Use an isolation transformer between the line cord plug and power receptacle, when servicing this chassis.

  • Page 4: Important Servicing Notes

    32LF-94EC IMPORTANT SERVICING NOTES Only qualified service personnel are allowed to carry out maintenance and repair of this receiver. Servicing of High Voltage System and CRT It is important that the static charge is removed from the high voltage system when carrying out work on the receiver.

  • Page 5: Controls & Terminals

    32LF-94EC CONTROLS & TERMINALS FRONT PANEL TWD9@P WD9@P GTBDÃÃÃS999 ÃÃÃÃÃÃÃÃ6V9DP TWD9@P WD9@P GTBDÃÃÃS999 ÃÃÃÃÃÃÃÃ6V9DP Speakers (left + right) VIDEO = Power On / Off AUDIO L (L/S/G/I) = Audio left = Volume -/+ AUDIO R (R/D/D/D) = Audio right = Program -/+ = Headphone 3,6 mm Ø...
  • Page 6 32LF-94EC REMOTE CONTROL = Stand By = Cursor Up = Cursor Right OK = Store / Still Picture = Info (Program Table) 0 - 9 = Direct Program - / - - = Double Digit = Screen Format button P/CH+ = Program Up...
  • Page 7 32LF-94EC CHASSIS LAYOUT Mother Unit Front Unit (SW+Keyboard+FAV)
  • Page 8 32LF-94EC Digital Module Unit CRT Socket Unit...

  • Page 9: Parts Listing

    Q709 30001458 TR BC858B SMD 30009837 32'' CPT TUBE SAFE 10 16:9 REALFLAT Q710 30001458 TR BC858B SMD 30032255 32"16:9DEG&EARTH CB.SAFE WO/UL R/F(SHARP Q711 30001457 TR BC848B SMD 30026312 ROTATION COIL AK41 29"RF THO Q712 30001458 TR BC858B SMD Q713...
  • Page 10 32LF-94EC REF No. PARTS DESCRIPTION SN CODE EX CODE REF No. PARTS DESCRIPTION SN CODE EX CODE D102 30007760 DIODE ZENER SMD BZT55C10 D818 30001318 DIODE BA159 1A/800V 20A D102 30018574 DIODE SCH SS33 3A/30V DO214AB D819 30001285 DIODE 1N4148 SMD...
  • Page 11 32LF-94EC REF No. PARTS DESCRIPTION SN CODE EX CODE REF No. PARTS DESCRIPTION SN CODE EX CODE L220 30013413 FERRITE BEAD ACB2012H-300 TR101 30017521 TRF FBT SAFESINGLECOMMONFOCUSLAYER(AK41) L404 30016162 FERRITE BEAD (0805) BLM21A102FPT TR801 30019205 TRF SMPS SAFE AK52 (170-270V) 170W...
  • Page 12 32LF-94EC REF No. PARTS DESCRIPTION SN CODE EX CODE REF No. PARTS DESCRIPTION SN CODE EX CODE C140 30012581 CAP SMD 1NF 50V K R (0603) C428 30000100 CAP MKT 330NF 63V J C141 30000415 CAP EL 4.7UF 250V M...
  • Page 13 32LF-94EC REF No. PARTS DESCRIPTION SN CODE EX CODE REF No. PARTS DESCRIPTION SN CODE EX CODE C487 30016654 CAP SMD 100NF 16V K R (0603) C739 30016654 CAP SMD 100NF 16V K R (0603) C489 30016126 CAP SMD 220NF 16V K R (0603)
  • Page 14 32LF-94EC REF No. PARTS DESCRIPTION SN CODE EX CODE REF No. PARTS DESCRIPTION SN CODE EX CODE C814 30007308 CAP CER 220PF 1KV K (PULSE) C914 30000388 CAP EL 33UF 160V M C814 30016654 CAP SMD 100NF 16V K R (0603)
  • Page 15 32LF-94EC REF No. PARTS DESCRIPTION SN CODE EX CODE REF No. PARTS DESCRIPTION SN CODE EX CODE R125 30009036 RES FUSE SAFE 1/2W 0.1R J R421 30022028 RES SMD 1/16W 150R J (0402) R126 30000564 RES CF 1/4W 18K J...
  • Page 16 32LF-94EC REF No. PARTS DESCRIPTION SN CODE EX CODE REF No. PARTS DESCRIPTION SN CODE EX CODE R703 30021996 RES SMD 1/16W 10K J (0402) R784 30012641 RES SMD 1/16W 10K J (0603) R704 30022072 RES SMD 1/16W 27R J (0402)
  • Page 17 RES SMD 1/16W 22K J (0402) 20163353 MD.ASY.SB112-FAV+HP+SVHS 2862/3262 (AK53) (Front Unit) R876 30022042 RES SMD 1/16W 1K J (0402) 20168819 CRT B.ASSY.TP53-SIN.FOC.W/BSVM(AK53)SHARP (CRT Unit) AS R878 30022038 RES SMD 1/16W 180R J (0402) MISCELLANEOUS PARTS R879 30022038 RES SMD 1/16W 180R J (0402)
  • Page 18 CONN HEADER 2P 7.5MM TOP WHT 20151304 POWER CORD ASSY.(2.4MT W/FTZ)(LONGWELL) PL108 35000135 TEST PIN 1.1MM 30028208 POWER CORD SAFE EURO 2.2M SHARP W/FILTER PL203 30010921 DOUBLE-DECK SCART SOCKET 20153254 FRONT 3262W W/H SLV285S(P)(PW/S) PL401 30018410 CONN HEADER 35P 3.0MM SIDE DR...

  • Page 19: How To Update The Technical Information

    32LF-94EC HOW TO UPDATE THE TECHNICAL INFORMATION APPEARED ON THIS SERVICE MANUAL 1. Web site: https://www.vestelservice.com 2. Select: Technical Support 3. Login: 101278 4. Password: SHPII278 By this access you can consult the latest schematic diagram or request the Parts Listing of a concrete Production Date / Serial Number.
  • Page 20 Technical information and Production: Vestel Electronik AS PRINTED BY: Think Ecology, please use Technical information re-issued: SHARP ELECTRONICA ESPAÑA S.A. Service Manual Group Engineering Dept. Polígono Industrial Can Sant Joan 08190 Sant Cugat del Vallès Barcelona...
  • Page 21 AK53 (D.O.C) SERVICE MANUAL RELEASE DATE: 22.03.2004 PREPARED BY: VESTEL ELECTRONICS...
  • Page 22 Overall Block Diagram...
  • Page 23 TABLE OF CONTENTS 1.INTRODUCTION.......................... 1 2.TUNER SPECIFICATION......................1 3.IF/AUDIO&VIDEO SWITCHING/AD CONVERTER PART .............. 2 (PNX3000 (CALLED AS MPIF)) ...................... 2 4.DIGITAL TV PROCESSOR (PNX300X (CALLED AS ADOC))............3 5.SOUND OUTPUT STAGE WITH TDA7480L ................. 4 6.VERTICAL OUTPUT STAGE WITH STV9379FA& TDA8177F............4 7.VIDEO OUTPUT AMPLIFIER TDA6108JF ..................
  • Page 24 12.13.1.Description .........................28 12.13.2.Features ........................28 12.13.3.Pin connections......................28 12.13.4.Block Diagram ......................28 12.14.TCET1102G (IC801)......................29 12.14.1.Description .........................29 12.14.2.Applications ........................29 12.14.3.Features ........................29 12.15.MC44608 (IC804) ......................30 12.15.1.Description .........................30 12.15.2.General Features ......................30 12.15.3.Pin Connections ......................30 12.16.TL431 (Q816) ........................32 12.16.1.Description .........................32 12.16.2.Features ........................32 12.16.3.Pin Configurations .......................32 12.17.TFMS5360 ........................32 12.17.1.Description .........................32 12.17.2.Features ........................32 13.AK53 CHASSIS MANUAL ADJUSTMENTS PROCEDURE ............33...

  • Page 25: Introduction

    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´.

  • Page 26: If/Audio&Video Switching/Ad Converter Part

    3.IF/AUDIO&VIDEO SWITCHING/AD CONVERTER PART (PNX3000 (CALLED AS MPIF)) MPIF IC consists of following OVERALL blocks; (1)-Video/Audio switching (2)-IF processing (3)-A/D conversion for digital TV (DTV) processor (ADOC-PNX300X) Main building blocks: _ Vision PLL-IF, auto-calibrated, selectable IF frequency, 4 selectable AGC time constants, built-in sound trap and selectable group delay.

  • Page 27: Digital Tv Processor (Pnx300X (Called As Adoc))

    _ Two YUV / RGB inputs, which can handle also YPrPb and sync on Y for DVD players Also 2Fh YUV / RGB signals can be handled by the A/D converters. _ An audio stereo crossbar switch with two outputs (one stereo, one stereo or mono) for further processing in the processor after A/D conversion and three stereo outputs for external connections.

  • Page 28: Sound Output Stage With Tda7480L

    Functional block diagram of ADOC: 5.SOUND OUTPUT STAGE WITH TDA7480L The TDA7480L is an audio class-D amplifier assembled in Power DIP package specially designed for high efficiency applications mainly for TV and Home Stereo sets. Mute stand-by function of the audio amplifier can be described as the following; the pin 12 (MUTE/STAND-BY) controls the amplifier status by two different thresholds, referred to ground.

  • Page 29: Serial Access 64K Eeprom

    An optocoupler is used to control the regulation of line voltage and stand-by power consumption. There is a regulation circuit in secondary side. This circuit produces a control voltage according to the changes in 135V DC voltage, via an optocoupler (TCET 1102G) to pin3 of the IC. During the switch on period of the transistor, energy is stored in the transformer.

  • Page 30: Saw Filter Specification

    11.SAW FILTER SPECIFICATION Two groups of saw filters are used from EPCOS For picture (Z400) Pal Secam BG DK L L’?K3953M Pal Secam BG I I’ ?K3953M For sound(Z401) Pal Secam BG DK L L’?K9656M Pal Secam BG I I’ ?K9356 For sound saw filter it needs to be switched between L’...

  • Page 31: Tda6108Jf (Ic900)

    12.1.TDA6108JF (IC900) 12.1.1.General Description The TDA6108JF includes three video output amplifiers in one plastic DIL-bent-SIL 9-pin medium power (DBS9MPF) package (SOT111-1), using high-voltage DMOS technology, and is intended to drive the three cathodes of a color CRT directly. To obtain maximum performance, the amplifier should be used with black- current control.

  • Page 32: Ht48Ra0A

    12.2.HT48RA0A 12.2.1.General Description The HT48RA0A is an 8-bit high performance RISC-like microcontroller specifically designed for multiple I/O product applications. The device is particularly suitable for use in products such as infrared remote controllers and various subsystem controllers. A HALT feature is included to reduce power consumption.

  • Page 33: Pnx3000 (Ic400)

    12.3.PNX3000 (IC400) 12.3.1.General Description The PNX3000 is an analog front end for digital video processors. It contains an IF circuit for both analog and digital broadcast signals, and input selectors and A to D converters for analog video and audio signals.
  • Page 34 SYMBOL DESCRIPTION CVBS2 CVBS2 input VAUDO DC output voltage for supply of audio DACs in digital decoder VAUDS sense voltage for audio DACs supply CVBS/Y3 external CVBS/Y3 input external CHROMA3 input GND_VSW ground video switch BGDEC bandgap decoupling CVBS/Y4 external CVBS/Y3 input external CHROMA3 input fuse fused lead...
  • Page 35 DATA2P data positive datalink2 GND_I2D ground datalinks STROBE1N strobex negative datalink1 STROBE1P strobex positive datalink1 DATA1N data negative datalink1 DATA1P data positive datalink1 VCC_I2D supply voltage datalinks (5V) SCART2R audio output for SCART 2 right SCART2L audio output for SCART 2 left LINER audio line output right LINEL...
  • Page 36 DTVOUTN DTV output negative VCC_SUP supply of supply circuit (5V) fuse fused lead CVBSOUTIF CVBS output of IF circuit GND_SUP ground of supply circuit VCC1_VSW supply of video switch (5V) CVBS0 CVBS0 input (to be used for CVBS from IF part) TESTPIN1 test pin 1 (connect to ground) VCC2_VSW...

  • Page 37: Cs51033 (Ic 104)

    12.4.CS51033 (IC 104) 12.4.1.General Description The CS51033 is a switching controller for use in dc–dc converters. It can be used in the buck topology with a minimum number of external components. The CS51033 consists of a 1.0 A power driver for controlling the gate of a discrete P–channel transistor, fixed frequency oscillator, short circuit protection timer, programmable Soft Start, precision reference, fast output voltage monitoring comparator, and output stage driver logic with latch.

  • Page 38: Sdram 64Mbit (Ic315)

    12.5.SDRAM 64MBIT (IC315) 12.5.1.General Description Please note that in the following explanation one of the SDRAM alternative is used. The K4S641632D is 67,108,864 bits synchronous high data rate Dynamic RAM organized as 4 x 1,048,576 words by 16 bits, fabricated with SAMSUNG¢s high performance CMOS technology. Synchronous design allows precise cycle control with the use of system clock I/O transactions are possible on every clock cycle.

  • Page 39: Flash (Ic 314)

    12.6.FLASH (IC 314) 12.6.1.General Description The MT28F128J3 is a nonvolatile, electrically block-erasable (Flash), programmable memory containing 134,217,728 bits organized as 16,777,218 bytes (8 bits) or 8,388,608 words (16 bits). This 128Mb device is organized as one hundred twenty-eight 128KB erase blocks. The MT28F640J3 contains 67,108,864 bits organized as 8,388,608 bytes (8 bits) or 4,194,304 words (16 bits).

  • Page 40: Pin/Ball Descriptions

    Micron® (0x2Ch) • Industry-standard pinout • Inputs and outputs are fully TTL-compatible • Common Flash Interface (CFI) and Scalable Command Set • Automatic write and erase algorithm • 5.6µs-per-byte effective programming time using write buffer • 128-bit protection register 64-bit unique device identifier 64-bit user-programmable OTP cells •...
  • Page 41 33, 35, 38, 40, F2, E2, G3, E4, DQ0– Input/ Data I/O: Data output pins during any READ operation or 44, 46, 49, 51, E5, G5, G6, H7, DQ15 Output data input pins during a WRITE. DQ8–DQ15 are not used 34, 36, 39, 41, E1, E3, F3, F4, in byte mode (BYTE = LOW).

  • Page 42: Ne56610-29 (Reset Ic) (Ic 316)

    12.7.NE56610-29 (RESET IC) (IC 316) 12.7.1.General Description The NE56610-29 is a family of devices designed to generate a reset signal for a variety of microprocessor and logic systems. Accurate reset signals are generated during momentary power interruptions or when ever power supply voltages sag to intolerable levels. The NE56610-29 incorporates an internal timer to provide reset delay and ensure proper operating voltage has been attained.

  • Page 43: Sts5Pf30L (Ic105)

    12.8.STS5PF30L (IC105) 12.8.1.Description STS5PF30L is a Power MOSFET. 12.8.2.Features S(on) = 0.070 ? ? • TYPICAL • STANDARD OUTLINE FOR EASY AUTOMATED SURFACE MOUNT ASSEMBLY • LOW THRESHOLD DRIVE TYPE (on) STS5PF30L <0.080 O AK53 D.O.C. Service Manual 22/03/2004...

  • Page 44: Pnx300X (Ic313)

    12.9.PNX300X (IC313) This IC is the heart of the TV set for small signal processing. 12.9.1.General Description of the Digital One Chip System DOC Hardware The Digital One Chip System (DOC) is a system concept based on a digital processor for double-scan TV receivers.

  • Page 45: Features Of The Adoc Processor

    • Integrated SCART buffers The DOC system is designed to facilitate a very cost effective TV chassis. Some of the measures taken are: • One crystal design. Only one reference crystal is required for the MPIF and ADOC, • The advanced geometry corrections in the DOP result in a simple horizontal deflection circuitry. Linearity coils are not required 12.9.2.Features of the ADOC Processor Color Decoder and Sync Processing...
  • Page 46 • Blue Stretch • Green Enhancement • Black Stretch • 32-bins histogram • Electrical Local Doming Protection Picture in Picture / Double window • Requires external memory to be connected to SDRAM interface • Second input through second color decoder. Can be selected to be either main or sub. •...
  • Page 47 • Decoding and adaptive de-emphasis for satellite FM (ASTRA) • Monitor selection for FM/AM DC values and signals, with peak detection option • Soft-mute for DEMDEC outputs DEC, MONO and SAP • Sample rate conversion (SRC) for up to three demodulated terrestrial audio signals. It is possible to process SCART signals together with demodulated terrestrial signals.
  • Page 48 AD Converters for Display Functions • 3x Sigma Delta ADC for Black Current, EHT, Beam Current Limiting measurement Clock frequency 54MHz Deflection & Geometry • Horizontal time base for display based on digital PLL • Very good jitter performance of about. +/- 300 ps of the horizontal drive pulse •...
  • Page 49 Memory at EBIU Interface for SW Code/Data • Addressable space up to 8Mbyte • Memories supported – 16bit Standard asynchronous ROM, SRAM, FLASH – 16bit Page mode Flash support (AMD, Intel and ST) • Memory Functions – Code memory up to 8Mbyte (FLASH/ROM/RAM) –...

  • Page 50: M24C64Wbn6 (Ic309)

    12.10.M24C64WBN6 (IC309) 12.10.1.Features • Two Wire I 2 C Serial Interface Supports 400 kHz Protocol • 3.3V Supply Voltage • Write Control Input • BYTE and PAGE WRITE (up to 32 Bytes) • RANDOM and SEQUENTIAL READ Modes • Self-Timed Programming Cycle •...

  • Page 51: Tda7480L (Ic401,Ic402)

    12.11.TDA7480L (IC401,IC402) 12.11.1.Description The TDA7480L is an audio class-D amplifier assembled in Power DIP package specially de-signed for high efficiency applications mainly for TV and Home Stereo sets. 12.11.2.Features 10W Output Power: R = 8? /4? ; THD = 10% High Frequency No Heatsink Split Supply...

  • Page 52: Tda8177F & Stv9379Fa (Ic100)

    12.13.TDA8177F & STV9379FA (IC100) 12.13.1.Description Designed for monitors and high performance TVs, the STV9379FA&TDA8177F vertical deflection booster can handle flyback voltage up to 70V. More than this it is possible to have a flyback voltage, which is more than the double of the supply (Pin 2). This allows to decrease the power consumption or to decrease the flyback time for a given supply voltage.

  • Page 53: Tcet1102G (Ic801)

    12.14.TCET1102G (IC801) 12.14.1.Description The TCET110/ TCET2100/ TCET4100 consists of a phototransistor optically coupled to a gallium arsenide infrared-emitting diode in a 4-lead up to 16-lead plastic dual inline package. The elements are mounted on one lead frame using a coplanar technique, providing a fixed distance between input and output for highest safety requirements.

  • Page 54: Mc44608 (Ic804)

    12.15.MC44608 (IC804) 12.15.1.Description The MC44608 is a high performance voltage mode controller designed for off–line converters. This high voltage circuit that integrates the start–up current source and the oscillator capacitor, requires few external components while offering a high flexibility and reliability. The device also features a very high efficiency stand–by management consisting of an effective Pulsed Mode operation.
  • Page 55 12.15.4.Pin Function description NAME DESCRIPTION Demag The Demag pin offers 3 different functions: Zero voltage crossing detection (50mV), 24mA current detection and 120mA current detection. The 24mA level is used to detect the secondary reconfiguration status and the 120mA level to detect an Over Voltage status called Quick OVP.

  • Page 56: Tl431 (Q816)

    12.16.TL431 (Q816) 12.16.1.Description The TL431 is a 3-terminal adjustable shunt voltage regulator providing a highly accurate 1 % band gap reference. TL431 acts as an open-loop error amplifier with a 2.5V temperature compensation reference. The TL431 thermal stability, wide operating current (150mA) and temperature range (0.to 105.makes it suitable for all variety of application that are looking for a low cost solution with high performance.

  • Page 57: Ak53 Chassis Manual Adjustments Procedure

    13.AK53 CHASSIS MANUAL ADJUSTMENTS PROCEDURE 13.1.PRELIMINARY Before starting with the alignment procedure, make sure that all the potentiometers on the chassis and also screen and focus pots are in the medium position. 13.2.SYSTEM VOLTAGE ADJUSTMENTS Inputs AC power (220V 50Hz) PAL B/G test pattern via RF (PAL I test pattern for PAL I TV’s, SECAM D/K pattern, SECAM L/L’/K’...

  • Page 58: Ak53 Chassis Production Service Mode Adjustments

    14.AK53 CHASSIS PRODUCTION SERVICE MODE ADJUSTMENTS All system, geometry and white balance alignments are performed in production service mode. Before starting the production mode alignments, make sure that all manual adjustments are done correctly. To start production mode alignments enter the MAIN MENU and then press the digits respectively.
  • Page 59 For standard DK, select ON other case select OFF. L-LP For standard L-LP, select ON other case select OFF. For standard I, select ON other case select OFF. For standard M, select ON other case select OFF. Set to OFF. TXT LAST PAGE Text last page can be changed to ON or OFF.

  • Page 60: Geometry

    14.2.GEOMETRY Select Geometry in Service main menu by pressing “ ? /? ” buttons and press “ ? ” button to enter Geometry menu. The following menu appears on the screen. GEOMETRY 28” 4:3 SF 32” 16:9 SF 1 EW ALIGNMENT 2 V_SHIFT 3 SERVICE BLANK 4 VERT_AMP...
  • Page 61 EW PARABOLA It can be adjusted between 0 … 127. EW TRAPEZIUM It can be adjusted between 0 … 48. EW UPPER CORNER It can be adjusted between 0 … 48. EW LOWER CORNER It can be adjusted between 0 … 48. *Following 10 EW adjustment parameters make geometry corrections if fine tuning is necessary in geometry, each one of 10 parameter is responsible for each different dedicated area as seen below.
  • Page 62 PICTURE FORMATS 4:3 TV MODES 4:3 MODE MEDION 16:9 MODE MEDION AK53 D.O.C. Service Manual 22/03/2004...
  • Page 63 16:9 TV MODES NORMAL MODE: MEDION MEDION 14:9 MODE: MEDION MEDION SUBTITLE MODE: MEDION MEDION AK53 D.O.C. Service Manual 22/03/2004...
  • Page 64 CINEMA MODE: MEDION MEDION FULL MODE: MEDION MEDION AK53 D.O.C. Service Manual 22/03/2004...
  • Page 65 PANORAMA MODE: d sq d sq d sq d sq MEDION MEDION ZOOM MODE: AK53 D.O.C. Service Manual 22/03/2004...
  • Page 66 V_SHIFT Apply a circle test pattern via RF, change Vertical Shift by pressing “? /? ” buttons till the test pattern is vertically centered. Horizontal line at the center of the test pattern is in equal distance both to upper and lower side of the picture tube.
  • Page 67 HOR INNER PINC Apply cross hatch pattern; try to improve bendings towards tube as straight by changing this parameter (Horizontal pincushion). It can be adjusted between 0 … 32. HOR PAR Change Horizontal Parabola by pressing “? /? ” buttons till vertical lines close to the both sides of the picture frame become parallel to vertical sides of picture tube without any bending to left or to right side of the screen.

  • Page 68: Video Alignments

    14.3.VIDEO ALIGNMENTS Select Video in Service menu by pressing “ ? /? ” buttons and press “? ” button to enter Video menu. The following menu appears on the screen. VIDEO 28” 4:3 SF 32” 16:9 SF 1 MAIN AGC 2 PIP AGC 3 VIDEO ADJUST 4 COLOR ADJUSTMENT...

  • Page 69: 1.White Drive

    14.3.1.1.WHITE DRIVE Select White Drive in Video Adjust menu by pressing “ ? /? ” buttons and press “ ? ” button to enter White Drive menu. The following menu appears on the screen. WHITE DRIVE 1 NORMAL 2 WARM 3 COOL 14.3.1.1.1.NORMAL Select Normal in White Drive menu by pressing “? /? ”...

  • Page 70: Color Adjustment

    14.3.2.COLOR ADJUSTMENT Select Color Adjustment in Video menu by pressing “? /? ” buttons and press “? ” button to enter Color Adjustment menu. The following menu appears on the screen. COLOR ADJUSTMENT 1 Y DEL SEC BG 2 Y DEL SEC DK 3 Y DEL SEC L 4 Y DEL SEC AV 5 Y DEL PAL BG...

  • Page 71: Sound Related Options

    14.4.SOUND RELATED OPTIONS Select Sound in Service main menu by pressing “ ? /? ” buttons and press “? ” button to enter Sound menu. The following menu appears on the screen. SOUND 1 NICAM I PRESCALE 2 SUBWOOFER ON/OFF 3 HEADPHONE ON/OFF 4 LINE OUTPUT...

  • Page 72: Factory Settings

    14 LANGUAGE GERMAN 15 COUNTRY DENMARK 16 TXT LANGUAGE WEST EUROPE 17 EXT2 OUTPUT 18 LINE OUTPUT 19 RC STANDARD 20 RC SHARP 21 RC TOSHIBA 22 APS These values may change upon customer request. AK53 D.O.C. Service Manual 22/03/2004...

  • Page 73: Menu Languages

    15.MENU LANGUAGES MENU LANGUAGES APS COUNTRY PICTURE MODES ENGLISH- BELGIUM 4:3 CRT FRANÇAIS DENMARK AUTO DEUTSCH FINLAND GREEK--? ? ? ? ? ?? ? FRANCE 16/9 HUNGARIAN--MAGYAR GERMANY SWEDISH--SVENSKA GREECE 16:9 CRT SPANISH--ESPA?OL IRELAND AUTO SLOVENIAN--SLOVENSKI ITALY NORMAL RUSSIAN--? ? ? ? ? ? ? NETHERLANDS FULL ROMENIAN--ROMÂN...

  • Page 74: Block Diagram

    16.BLOCK DIAGRAM AK53 DOC Service Manual 22/03/2004...

  • Page 75: Circuit Diagrams

    17.CIRCUIT DIAGRAMS 11AK53-1 (SMALL SIGNAL) AK53 DOC Service Manual 22/03/2004...
  • Page 76 11AK53-2 (SMPS) AK53 DOC Service Manual 22/03/2004...
  • Page 77 11AK53-3 (DEFLECTION) AK53 DOC Service Manual 22/03/2004...
  • Page 78 11AK53-4 (AUDIO POWER AMPLIFIER) AK53 DOC Service Manual 22/03/2004...
  • Page 79 11FB53-1 (STEP-DOWN CONVERTER PLUS SUPPLY) AK53 DOC Service Manual 22/03/2004...
  • Page 80 11FB53-2 (AUDIO/VIDEO SWITCHING + IF) AK53 DOC Service Manual 22/03/2004...
  • Page 81 11FB53-3 (VIDEO/AUDIO/DEFLECTION/MICRO PROCESSING) AK53 DOC Service Manual 22/03/2004...
  • Page 82 11TP53 AK53 DOC Service Manual 22/03/2004...

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