Sharp 32LF-94EC Service Manual Download Page 35

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AK53 D.O.C. Service Manual

22/03/2004

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

audio line output left

SCART1R

audio output for SCART1 right

SCART1L

audio output for SCART1 left

fuse

fused lead

DSNDR2

audio signal from digital decoder right 2

DSNDL2

audio signal from digital decoder left 2

DSNDR1

audio signal from digital decoder right 1

DSNDL1

audio signal from digital decoder left 1

GND_AADC

ground audio ADCs

VCC_AADC

supply voltage audio ADCs (5V)

fuse

fused lead

right input audio 4

left input audio 4

right input audio 3

left input audio 3

right input audio 2

left input audio 2

right input audio 1

left input audio 1

GND2_ASW

ground audio switch

VCC2_ASW

supply voltage audio switch (audio output buffers, 5V or 8V)

VAADCREF

decoupling of reference voltage for audio ADCs

VAADCN

0V reference voltage for audio ADCs (GND)

VAADCP

full scale reference voltage for audio ADCs (5V)

MIC2N

microphone input 2 neg

MIC2P

microphone input 2 pos

MIC1N

microphone input 1 neg

MIC1P

microphone input 1 pos

fuse

fused lead

GND1_ASW

ground audio switch

VCC1_ASW

supply voltage audio switch (audio input buffers, 5V or 8V)

SIFINP

sound IF input positive

SIFINN

100

sound IF input negative

SIFAGC

101

control voltage for SIF AGC

DTVIFAGC

102

control voltage for DTV IF AGC

DTVIFINP

103

DTV IF input positive

DTVIFINN

104

DTV IF input negative

TUNERAGC

105

tuner AGC output

fuse

106

fused lead

VIFINP

107

vision IF input positive

VIFINN

108

vision IF input negative

DTVIFPLL

109

loop filter DTVIF PLL demodulator

VCC_IF

110

supply voltage IF circuit (5V)

VIFPLL

111

loop filter VIF PLL demodulator

GND1_IF

112

ground IF circuit

2NDSIFEXT

113

2ndSIF input

2NDSIFAGC

114

2ndSIF AGC capacitor

GND2_IF

115

ground IF circuit

DTVOUTP

116

DTV output positive

Summary of Contents for 32LF-94EC

Page 1: ...nd only parts identi cal to those specified should be used CONTENTS 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 MODEL 32LF 94EC SE0032LF94C00 Issued 22nd July 2004 In order to service the model 32LF 94EC refer to the AK 53 Chassis Service Manual SE00AK53CHA00 ...

Page 2: ...If only part number changes are required just change part number directly the part number in the Parts Listing Section If you need more information please refer to the Technical Report Bulletin SERVICE MANUAL UPDATE LOG SHEET Part No Technical Report No Technical Bulletin No Cause Solution Page No Application Data Serial No ...

Page 3: ... 75MHz thru 855 25 MHz VHF IR A J S1 S41 CH Hiperband E2 E12 F2 F10 UHF I21 I69 CH E21 E69 Power Input 220V 240 Volts AC 50 Hz Power Consumption Normal Operation Method IEC60107 113 W Stand by Operation 3 W Audio Power Output Rating MPO Impedance Internal Left Speaker 10 W 7 Ω Internal Right Speaker 10 W 7 Ω Speakers Full range 2 pcs 60 x 120 mm Convergence Maximum Misconvergence AREA 32 W A 0 4 B...

Page 4: ...dous x ray radiation levels This is a problem when in close proximity to the receiver for long periods of time To reduce any risks associated with this please observe the following precautions 1 When undertaking any servicing on this chassis DO NOT increase the EHT to more than 33 KV at a instantaneous beam current of 2000 µA 2 Ensure that during normal operation the EHT does not exceed 29 5 KV at...

Page 5: ...phone 3 6 mm Ø Speakers left right Power On Off Volume CH Program S VIDEO 6 9 2 9 2 6 5 8 2 6 9 2 9 2 6 5 8 2 FRONT PANEL REAR TV RF Input 1 Aerial terminal 21 pin In Out 2 21 pin Audio Video RGB EXT 1 With PAL SECAM NTSC S Video Input 3 21 pin Audio Video EXT 2 With PAL SECAM NTSC Video Input 7 7 ...

Page 6: ...at button P CH Program Up Volume Up TV Quit Menu 7 EXT button EXT 1 EXT 2 S VHS S VHS EXT2 or FRONT AV Yellow Feature Menu Blue Installation Menu Hold Update Index Page Reveal Expand Mix Teletext Time Red Sound Menu Green Picture Menu Mute I II Mono Stereo Dual I II Volume Down P CH Program Down Flash back button M Menu Cursor Down Cursor Left ...

Page 7: ...7 32LF 94EC CHASSIS LAYOUT Mother Unit Front Unit SW Keyboard FAV ...

Page 8: ...8 32LF 94EC Digital Module Unit CRT Socket Unit ...

Page 9: ...BC337 AA AC Q111 30001453 TR BC337 AA AC Q112 30001457 TR BC848B SMD AA AC Q113 30001457 TR BC848B SMD AA AC Q114 30001457 TR BC848B SMD AA AC Q115 30001458 TR BC858B SMD AA AB Q116 30023137 IC TL431 1 TOL TO 92 AA AD PICTURE TUBE REF No PARTS DESCRIPTION SN CODE EX CODE Q117 30001458 TR BC858B SMD AA AB Q400 30001458 TR BC858B SMD AA AB Q401 30001457 TR BC848B SMD AA AC Q402 30001457 TR BC848B SM...

Page 10: ...ODE 1N4007 1A 1000V 30A AA AB D813 30006691 DIODE ZENER 3 3V AA AA D814 30001318 DIODE BA159 1A 800V 20A AA AB D815 30001318 DIODE BA159 1A 800V 20A AA AB REF No PARTS DESCRIPTION SN CODE EX CODE D818 30001318 DIODE BA159 1A 800V 20A AA AB D819 30001285 DIODE 1N4148 SMD AA AB D820 30001285 DIODE 1N4148 SMD AA AB D821 30001285 DIODE 1N4148 SMD AA AB D822 30009699 DIODE ZENER SMD BZT55C12 AA AB D823...

Page 11: ...L803 30001992 FIXED COIL 10UH Q65 K A AA AB L805 30018078 LINE FILTER SAFE 2X22MH AK37 AA AB L951 30001979 FIXED COIL 1UH Q45 M A AA AB CERAMIC FILTERS Z400 30001692 FILTER SAW OFWK3953M AH AV Z401 30012545 FILTER SAW K9656M AG AR TRANSFORMERS TR100 30006743 TRF HORIZONTAL DRIVER 15AK17 17 AC AH REF No PARTS DESCRIPTION SN CODE EX CODE TR101 30017521 TRF FBT SAFESINGLECOMMONFOCUSLAYER AK41 AS BD T...

Page 12: ...D 270PF 50V J 0603 AA AA C427 30012585 CAP SMD 2 2NF 50V K R 0603 AA AB C427 30016654 CAP SMD 100NF 16V K R 0603 AA AB REF No PARTS DESCRIPTION SN CODE EX CODE C428 30000100 CAP MKT 330NF 63V J AA AD C428 30022244 CAP SMD 100PF 50V J 402 AA AA C429 30000295 CAP CER 100NF 50V Z F AA AB C430 30000295 CAP CER 100NF 50V Z F AA AB C430 30012581 CAP SMD 1NF 50V K R 0603 AA AB C431 30000100 CAP MKT 330NF...

Page 13: ...AP SMD 100NF 16V K R 0603 AA AB C738 30016654 CAP SMD 100NF 16V K R 0603 AA AB REF No PARTS DESCRIPTION SN CODE EX CODE C739 30016654 CAP SMD 100NF 16V K R 0603 AA AB C740 30016654 CAP SMD 100NF 16V K R 0603 AA AB C742 30016654 CAP SMD 100NF 16V K R 0603 AA AB C744 30016654 CAP SMD 100NF 16V K R 0603 AA AB C745 30016654 CAP SMD 100NF 16V K R 0603 AA AB C747 30016654 CAP SMD 100NF 16V K R 0603 AA A...

Page 14: ...75 CAP MKT 100NF 250V K DC AA AD C909 30000071 CAP MKT 10NF 63V J AA AB C910 30000104 CAP MKT 4 7NF 100V J AA AB C911 30000104 CAP MKT 4 7NF 100V J AA AB C912 30000131 CAP MKP SAFE 100NF 250V J AA AB REF No PARTS DESCRIPTION SN CODE EX CODE C914 30000388 CAP EL 33UF 160V M AB AF C915 30000075 CAP MKT 100NF 250V K DC AA AD C917 30000295 CAP CER 100NF 50V Z F AA AB C918 30000352 CAP EL 100UF 16V M A...

Page 15: ...R J 0402 AA AA REF No PARTS DESCRIPTION SN CODE EX CODE R421 30022028 RES SMD 1 16W 150R J 0402 AA AA R422 30012677 RES SMD 1 16W 3 3K J 0603 AA AA R422 30022052 RES SMD 1 16W 200R J 0402 AA AA R423 30022118 RES SMD 1 16W 75R J 0402 AA AA R424 30012657 RES SMD 1 16W 1K J 0603 AA AB R424 30022118 RES SMD 1 16W 75R J 0402 AA AA R425 30000459 RES CF 1 4W 100R J AA AB R425 30021988 RES SMD 1 16W 1 8K ...

Page 16: ...W 10K J 0603 AA AB R781 30012696 RES SMD 1 16W 47K J 0603 AA AB R782 30022085 RES SMD 1 16W 33R J 0402 AA AA R783 30022085 RES SMD 1 16W 33R J 0402 AA AA REF No PARTS DESCRIPTION SN CODE EX CODE R784 30012641 RES SMD 1 16W 10K J 0603 AA AB R785 30012641 RES SMD 1 16W 10K J 0603 AA AB R786 30012662 RES SMD 1 16W 2 7K J 0603 AA AB R787 30022085 RES SMD 1 16W 33R J 0402 AA AA R788 30012692 RES SMD 1 ...

Page 17: ...5 30022028 RES SMD 1 16W 150R J 0402 AA AA R886 30022028 RES SMD 1 16W 150R J 0402 AA AA R887 30022028 RES SMD 1 16W 150R J 0402 AA AA R898 30022085 RES SMD 1 16W 33R J 0402 AA AA R900 30000788 RES CF 1 4W 6 8M J AA AB R901 30000459 RES CF 1 4W 100R J AA AB R902 30000459 RES CF 1 4W 100R J AA AB REF No PARTS DESCRIPTION SN CODE EX CODE R903 30000459 RES CF 1 4W 100R J AA AB R904 30000535 RES CF 1 ...

Page 18: ...020137 CNAS 600 FAV SVHS W DC FER AF AQ PL102 30020137 CNAS 600 FAV SVHS W DC FER AF AQ PL103 30020137 CNAS 600 FAV SVHS W DC FER AF AQ PL102 30001830 CONN HEADER 2P 2 5MM TOP BLUE SD AA AB PL103 30001839 CONN HEADER 3P 2 5MM TOP GREEN SD AA AC PL103 30001792 CONN HEADER 2P 7 5MM TOP WHT AA AC PL104 30008726 CNAS 3P 550 FLT W BLK C UL2468AWG24 AB AF PL105 30001829 CONN HEADER 2P 2 5MM TOP WHT SD A...

Page 19: ...s 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 By this way it can be also consulted the issued Technical Reports Service Bulletins ...

Page 20: ...cal photocopying recording or otherwise without prior written permission of the publisher Technical information and Production Vestel Electronik AS 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 Spain Think Ecology please use RECYCLED PAPER ...

Page 21: ...AK53 D O C SERVICE MANUAL RELEASE DATE 22 03 2004 PREPARED BY VESTEL ELECTRONICS ...

Page 22: ...Overall Block Diagram ...

Page 23: ...iption 9 12 3 2 Features 9 12 4 CS51033 IC 104 13 12 4 1 General Description 13 12 4 2 Features 13 12 4 3 Pin Description 13 12 5 SDRAM 64MBIT IC315 14 12 5 1 General Description 14 12 5 2 Features 14 12 5 3 Pin Description 14 12 6 FLASH IC 314 15 12 6 1 General Description 15 12 6 2 Features 15 12 6 3 Pin Ball Descriptions 16 12 7 NE56610 29 RESET IC IC 316 18 12 7 1 General Description 18 12 7 2...

Page 24: ...3 1 PRELIMINARY 33 13 2 SYSTEM VOLTAGE ADJUSTMENTS 33 13 3 AFC ADJUSTMENTS 33 13 4 FOCUS ADJUSTMENTS 33 13 5 SCREEN ADJUSTMENT VG2 ALIGNMENT 33 13 6 AGC AUTOMATIC GAIN CONTROL 33 14 AK53 CHASSIS PRODUCTION SERVICE MODE ADJUSTMENTS 34 14 1 OPTIONS 34 14 2 GEOMETRY 36 14 2 1 EW ALIGNMENT 36 14 3 VIDEO ALIGNMENTS 44 14 3 1 VIDEO ADJUST 44 14 3 1 1 WHITE DRIVE 45 14 3 1 2 MIN BRIGHTNESS 45 14 3 1 3 MI...

Page 25: ...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 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 im...

Page 26: ...signals to a suitable 2nd IF which can be handled by a digital DTV decoder Using a suitable SAW filter at the input the synthesizer mode can also be used to downmix FM radio frequencies from the Tuner to a suitable 2nd IF frequency for the FM demodulator _ Two Video IF inputs selectable by internal switch to enable use of optimized SAW filters _ Sound QSS IF demodulated 2nd SIF can be either from ...

Page 27: ...t parts IF can be included in the concept _ Less A D and D A converters needed for source switching _ Better performance for AD converters realized in analogue design environment more accurate less tolerance _ Critical items like reference voltages can be realized in the analogue environment 4 DIGITAL TV PROCESSOR PNX300X CALLED AS ADOC The DOC system serves the TV functionality for small signal p...

Page 28: ...o eliminate pop noise when TV is turned off Just after the TV is turned off this circuit switches the IC to stand by mode by pulling the mute pin voltage to ground 6 VERTICAL OUTPUT STAGE WITH STV9379FA TDA8177F The IC STV9379FA TDA8177F is the vertical deflection booster circuit Two supply voltages 14V and 14V are needed to scan the inputs VERT and VERT respectively And a third supply voltage 60V...

Page 29: ...upply In Stby available Where For Which NOTE 135V B NO large signal board FBT depends on CRT 14V A NO large signal board IC401 IC402 Audio amplifier 14V A NO large signal board IC401 IC402 Audio amplifier 14V NO large signal board Horizontal drive transistor 8V NO small signal board IC400 MPIF Headphone discrete circuit RGB pre amplifiers audio saw filter Z401 5V NO small signal board IC400 MPIF T...

Page 30: ...io saw filter ground or not port state Q404 Standard SEL_L L High Shorted to ground L SEL_L L Low open BG DK I L Pin Configuration Pin No Definition 1 Input 2 Input ground 3 Chip carrier ground 4 Output 5 Output Maximum ratings for saw filters Operable temperature range TA Storage temperature range Tstg DC voltage VDC AC voltage Vpp 25 65 C 12 IC DESCRIPTIONS In following chapters you can find det...

Page 31: ... current control 12 1 2 Features Typical bandwidth of 9 0 MHz for an output signal of 60 V p p High slew rate of 1850 V ms No external components required Very simple application Single supply voltage of 200 V Internal reference voltage of 2 5 V Fixed gain of 51 Black Current Stabilization BCS circuit Thermal protection 12 1 3 Pinning SYMBOL PIN DESCRIPTION Vi 1 1 inverting input 1 Vi 2 2 invertin...

Page 32: ...package 12 2 3 Pin Descriptions Pin Name I O Code Option Description PB0 PB1 I O Wake up or None 2 bit bidirectional input output lines with pull high resistors Each bit can be determined as NMOS output or Schmitt trigger input by software instructions Each bit can also be configured as wake up input by code option PC0 REM O Level or Carrier Level or carrier output pin PC0 can be set as CMOS outpu...

Page 33: ...nal Video source selector with 4 external CVBS or YC inputs and 2 analog CVBS outputs with independent source selection for each output Two linear inputs for 1fH or 2fH RGB signals with source selector The RGB signals are converted to YUV before A to D conversion Both inputs can also be used as YPB PR input for DVD or set top box Integrated anti alias filters for video A to D converters Four 10 bi...

Page 34: ... R1 PR1 V1 input G1 Y1 Y1 26 G1 Y1 Y1 input B1 PB1 U1 27 B1 PB1 U1 input VCC_RGB 28 supply voltage RGB matrix 5V GND_RGB 29 ground RGB matrix R2 PR2 V2 30 R2 PR2 V2 input G2 Y2 Y2 31 G2 Y2 Y2 input B2 PB2 U2 32 B2 PB2 U2 input fuse 33 fused lead GND_VADC 34 ground video ADCs VCC_VADC 35 supply voltage video ADCs 5V EWVIN 36 East West input voltage EWIOUT 37 East West output current REW 38 East Wes...

Page 35: ...5 right input audio 1 L1 86 left input audio 1 GND2_ASW 87 ground audio switch VCC2_ASW 88 supply voltage audio switch audio output buffers 5V or 8V VAADCREF 89 decoupling of reference voltage for audio ADCs VAADCN 90 0V reference voltage for audio ADCs GND VAADCP 91 full scale reference voltage for audio ADCs 5V MIC2N 92 microphone input 2 neg MIC2P 93 microphone input 2 pos MIC1N 94 microphone i...

Page 36: ...CVBS0 input to be used for CVBS from IF part TESTPIN1 124 test pin 1 connect to ground VCC2_VSW 125 supply of video switch 5V CVBS1 126 CVBS1 input R5 127 right input audio 5 L5 128 left input audio 5 Important pins need to be checked in case of troubleshooting Signal Measure Value CVBS RGB Input voltage Input pins 1Vpk pk CVBS Output voltage Output pins 2 Vpk pk Maximum input audio voltage Input ...

Page 37: ...Soft Start reduces current surges at start u p The short circuit protection timer significantly reduces the PFET duty cycle to approximately 1 30 of its normal cycle during short circuit conditions The CS51033 is available in an 8 Lead SO package 12 4 2 Features 1 0 A Totem Pole Output Driver High Speed Oscillator 700 kHz max No Stability Compensation Required Lossless Short Circuit Protection 2 0...

Page 38: ...nables device operation by masking or enabling all inputs except CLK CKE and L U DQM CKE Clock enable Masks system clock to freeze operation from the next clock cycle CKE should be enabled at least one cycle prior to new command Disable input buffers for power down in standby A0 A11 Address Row column addresses are multiplexed on the same pins Row address RA0 RA11 Column address CA0 CA7 BA0 BA1 Ba...

Page 39: ...tion Micron s even sectored Q Flash devices offer individual block locking that can lock and unlock a block using the sector lock bits command sequence Status STS is a logic signal output that gives an additional indicator of the internal state machine ISM activity by providing a hardware signal of both status and status masking This status indicator minimizes central processing unit CPU overhead ...

Page 40: ...by tying CE1 and CE2 to ground and then using CE0 as CE Device selection occurs with the first edge of CE0 CE1 or CE2 CEx that enables the device Device deselection occurs with the first edge of CEx that disables the device see Table 4 on page 14 16 D4 RP Input Reset Power Down When LOW RP clears the status register sets the ISM to the array read mode and places the device in deep power down mode ...

Page 41: ... RY BY pin When configured in its pulse mode it can pulse to indicate program and or erase completion Tie STS to VCCQ through a pull up resistor 43 G4 VCCQ Supply VCCQ controls the output voltages To obtain output voltage compatible with system data bus voltages connect VCCQ to the system supply voltage 9 37 H3 A6 VCC Supply Power Supply 2 7V to 3 6V 21 42 48 B2 H4 H6 VSS Supply Ground 56 H8 NC No...

Page 42: ...imer to provide reset delay and ensure proper operating voltage has been attained An Open Collector output topology provides adaptability for a wide variety of logic and microprocessor systems SOT23 5 surface mount package is used 12 7 2 Features 3 3V operating voltage VDDE SOT23 5 surface mount package Offered in reset thresholds 2 9 V DC Internal reset delay timer is 50ms 12 7 3 Pin Description ...

Page 43: ... 2004 12 8 STS5PF30L IC105 12 8 1 Description STS5PF30L is a Power MOSFET 12 8 2 Features TYPICAL RDS on 0 070 STANDARD OUTLINE FOR EASY AUTOMATED SURFACE MOUNT ASSEMBLY LOW THRESHOLD DRIVE TYPE VDSS RDS on ID STS5PF30L 30V 0 080 O 5 A ...

Page 44: ...o which memory based features have to be supported The amount of SDRAM required varies per feature but also varies with combination of features The DOC system also has 128kByte of internal SRAM memory This memory is used to run low latency timing critical parts of the software Under these circumstances no external SDRAM is needed The DOC system is built around the ADOC IC This chip implements all ...

Page 45: ... input mode not in Y C Second multi standard color decoder for low cost PIP Supports CVBS standards as listed above No comb filter No Y C performance Y and C are being summed before decoding No fast blanking with Component inputs VBI Data Capture Two independent data capture units DCU1 and DCU2 for standard data rate streams Multi standard data capture Both DCUs can always execute the following se...

Page 46: ...rround speaker 1x Left and Right Head Phones output Sound Demodulator Decoder Two FM AM Demodulator channels with programmable mixer frequencies and four different filter bandwidths Multi standard FM demodulation B G D K I M and N standard Optional AM demodulation L L standard FM pilot carrier present detector for A2 sound systems FM A2 Decoder Detection of ID signal for second carrier Decoding fo...

Page 47: ...le Window TeleText display Display of two 40 character wide Level 1 5 TeleText pages side by side Display of 40 character wide Level 1 5 TeleText and Video side by side Line 21 Data Services compliant Supports OSD with up to 8 colors out of a palette of 4096 colors Selectable character size Dynamically Redefinable Characters DRCs Internal memory up to 64 characters RGB Processing Fully programmabl...

Page 48: ... bit RISC processor Philips MIPS PR1910 54MHz Cache Structure Unified 8Kbyte Instruction Data Cache Co Processor 2x 32bit system clock Count Compare Timer1 2 Registers 1x 32bit system clock Count Compare Timer3 configurable as Watchdog Timer Debug Support MIPS JTAG compliant Software Hardware Breakpoint Single Stepping Real Time Trace TV Control Peripherals General Purpose IO GPIO 32 total GPIO pi...

Page 49: ...volatile memory connected to I 2 C interface Important pins need to be checked in case of troubleshooting Port Measure State Function On Off pin33 of PL402 low normal operation On Off pin33 of PL402 high stand by mode Mute pin7 of PL402 low Audio amplifier is muted Degauss pin31 of PL402 low Degaussing is done Reset pin1 of IC316 High Resets ADOC Protection Base of Q719 low TV set goes to stby mod...

Page 50: ...lock The devices carry a built in 4 bit Device Type Identifier code 1010 in accordance with the I2 C bus definition The device behaves as a slave in the I 2 C protocol with all memory operations synchronized by the serial clock Read and Write operations are initiated by a Start condition generated by the bus master The Start condition is followed by a Device Select Code and RW bit terminated by an...

Page 51: ... ST BY MUTE CONTROL PIN 13 NC NOT CONNECTED 14 VCC SIGN POSITIVE SIGNAL SUPPLY 15 VREG 10V INTERNAL REGULATOR 16 VCC POW POSITIVE POWER SUPPLY 17 VCC NEGATIVE SUPPLY TO BE CONNECTED TO PIN 16 VIA C5 18 VCC NEGATIVE SUPPLY 19 VCC NEGATIVE SUPPLY 20 VCC NEGATIVE SUPPLY 12 12 LM7808 IC803 12 12 1 Description The L7800 series of three terminal positive regulator These regulators can provide local on c...

Page 52: ...e 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 The TDA8177F operates with supplies up to 35V and provides up to 3APP output current to drive the yoke 12 13 2 Features Power Amplifier Thermal Protection Output Current Up To 3 0APP Flyback Voltage Up To 70V on Pin 5 Suitable For Dc Coupling ...

Page 53: ...table for Switch mode power supplies line receiver computer peripheral interface microprocessor system interface 12 14 3 Features VDE 0884 related features Rated impulse voltage transient overvoltage V IOTM 8 kV peak Isolation test voltage partial discharge test voltage V pd 1 6 kV Rated isolation voltage RMS includes DC V IOWM 600 V RMS 848 V peak Rated recurring peak voltage repetitive V IORM 60...

Page 54: ...y 1W while delivering 300mW in a 150W SMPS Integrated Start Up Current Source Lossless Off Line Start Up Direct Off Line Operation Fast Start Up 12 15 2 General Features Flexibility Duty Cycle Control Under voltage Lockout with Hysteresis On Chip Oscillator Switching Frequency 40 or 75kHz Secondary Control with Few External Components Protections Maximum Duty Cycle Limitation Cycle by Cycle Curren...

Page 55: ...can be performed during the SMPS stand by mode 3 Control Input A feedback current from the secondary side of the SMPS via the opto coupler is injected into this pin A resistor can be connected between this pin and GND to allow the programming of the Burst duty cycle during the Stand by mode 4 Ground This pin is the ground of the primary side of the SMPS 5 Driver The current and slew rate capabilit...

Page 56: ... for a low cost solution with high performance The output voltage may be adjusted to any value between VREF and 36 volts with two external resistors The TL431 is operating in full industrial temperature range of 0 C to 105 C 12 16 2 Features Trimmed Band gap to 1 Wide Operating Current 1mA to 150mA Extended Temperature Range 0 C to 105 C 12 16 3 Pin Configurations bottom view 12 17 TFMS5360 Is loc...

Page 57: ...t Outputs Picture tube drive Display Picture Action Select TV mode and tune to the signal Adjust focus potantiometer the upper pot on the rear side of the FBT transformer for optimum focusing drive 13 5 SCREEN ADJUSTMENT VG2 ALIGNMENT To adjust the screen of the TV set please follow the following steps Step1 Go to service menu by Press MENU button from remote controller Enter 4 7 2 5 from digit ke...

Page 58: ...ng OK button In order to change the selected parameter use buttons To exit the service menu press M button 14 1 OPTIONS Select Options in Service menu by pressing buttons and press button to enter Options menu The following menu appears on the screen OPTIONS 1 TILT OPTION ON OFF 2 S VHS ON OFF 3 FRONT AV ON OFF 4 EXT 3 ON OFF 5 BG ON OFF 6 DK ON OFF 7 L LP ON OFF 8 I ON OFF 9 M ON OFF 10 TXT LAST ...

Page 59: ...annel last visited teletext page comes to the screen Set to ON CRT CRT option can be changed as 4 3 or 16 9 according to picture tube AUTOSTORE Autostore option can be set to ON or OFF If it is set to ON Volume level and picture modes are stored automatically Set to OFF for MEDION P SMART OPTION Picture Smart option can be set as 1 or 2 It will be set to 1 for MEDION POWER ON It can be change betw...

Page 60: ...EW ALIGNMENT Select Ew Alignment in Geometry menu by pressing buttons and press button to enter Ew Alignment menu The following menu appears on the screen EW ALIGNMENT 28 4 3 SF 32 16 9 SF 1 EW_WIDTH 226 190 2 EW PARABOLA 57 108 3 EW TRAPEZIUM 24 20 4 EW UPPER CORNER 24 45 5 EW LOWER CORNER 24 45 6 EW_WAVE_1 95 110 7 EW_WAVE_2 141 153 8 EW_WAVE_3 176 192 9 EW_WAVE_4 199 221 10 EW_WAVE_5 210 236 11...

Page 61: ...each different dedicated area as seen below EW_WAVE_1 EW_WAVE_2 EW_WAVE_3 EW_WAVE_4 EW_WAVE_5 EW_WAVE_6 EW_WAVE_7 EW_WAVE_8 EW_WAVE_9 EW_WAVE_10 EW_WAVE_1 It can be adjusted between 0 255 EW_WAVE_2 It can be adjusted between 0 255 EW_WAVE_3 It can be adjusted between 0 255 EW_WAVE_4 It can be adjusted between 0 255 EW_WAVE_5 It can be adjusted between 0 255 EW_WAVE_6 It can be adjusted between 0 2...

Page 62: ...38 AK53 D O C Service Manual 22 03 2004 PICTURE FORMATS 4 3 TV MODES 4 3 MODE 16 9 MODE MEDION MEDION ...

Page 63: ...Manual 22 03 2004 16 9 TV MODES NORMAL MODE 14 9 MODE SUBTITLE MODE MEDION 1 d 1 d 1d 1 d u u MEDION 1 d 1 d 1d 1 d u u 1 d 1 d 1 d 1 d a a MEDION 1 d 1 d 1 d 1 d a a MEDION MEDION 1 d 1 d 1 d 1 2 d MEDION 1 d 1 d 1 d 1 2 d ...

Page 64: ...40 AK53 D O C Service Manual 22 03 2004 CINEMA MODE FULL MODE 1 d 1 3 d 1 3 d 1 d MEDION 1 d 1 3 d 1 3 d 1 d MEDION 1 d 1 d 1 d MEDION 1 d 1 d 1 d 1 d MEDION 1 d ...

Page 65: ...41 AK53 D O C Service Manual 22 03 2004 PANORAMA MODE ZOOM MODE MEDION 1 d 1 2 d sq 1 d 1 2 d sq MEDION 1 d 1 2 d sq 1 d 1 2 d sq ...

Page 66: ...test pattern become in equal size from the top of the screen to its bottom of the whole screen Check and readjust LOWER LIN item if the adjustment becomes improper after some other geometric adjustments are done It can be adjusted between 0 126 VERT_S_CORR Change Vertical S Correction by pressing buttons till the size of squares on both the upper and lower part of test pattern become equal to the ...

Page 67: ... 126 HOR BOW Change Horizontal Bow by pressing buttons till the vertical lines especially ones close to the left and right sides will of equal and symmetrical bending i e they together will neither be towards left side nor right side Check and readjust HOR BOW item if the adjustment becomes improper after some other geometric adjustments are done It can be adjusted between 0 126 TILT Apply cross h...

Page 68: ... 36 8 OSD CONTRAST 80 80 9 TELETEXT CONTRAST 70 70 10 TXT HOR SHIFT 5 3 11 PAT HOR SHIFT 5 3 12 FLASH PROTECT OFF OFF RED ONES ARE NOT RECOMMENDED TO CHANGE MAIN AGC Is used to change the AGC voltage Range 0 63 PIP AGC Is used to change the AGC of 2 nd voltage Range 0 63 14 3 1 VIDEO ADJUST Select Video adjust in Video menu by pressing buttons and press button to enter Video Adjust menu The follow...

Page 69: ... menu The following menu appears on the screen WARM 28 4 3 SF 32 16 9 SF 1 RED WARM 171 194 2 GREEN WARM 152 165 3 BLUE WARM 150 155 14 3 1 1 3 COOL Select Cool in White Drive menu by pressing buttons and press button to enter Cool menu The following menu appears on the screen COOL 28 4 3 SF 32 16 9 SF 1 RED COOL 152 180 2 GREEN COOL 145 164 3 BLUE COOL 160 170 14 3 1 2 MIN BRIGHTNESS It is not re...

Page 70: ...n become as sharper and colors between transients do not mix with each other as possible For other standards no need to adjust is done automatically within SW 14 3 2 2 Y DEL PAL BG Y DEL PAL DK Y DEL PAL I Y DEL PAL M Y DEL PAL AV They are used to adjust Y Delay for Pal till the color transients on the color bar of the pattern become as sharper and colors between transients do not mix with each ot...

Page 71: ...M I standards for other standards and scart no prescale value is needed those are automatically adjusted within SW SUBWOOFER If in the product subwoofer feature is available select as ON Otherwise select as OFF HEADPHONE If it is selected as ON headphone menu appears in the Sound menu otherwise does not LINE OUTPUT If Line Output is supported by TV set then set this item as ON Otherwise OFF is sel...

Page 72: ...GHTNESS 50 2 CONTRAST 75 3 COLOR 40 4 SHARPNESS 63 5 VOLUME 10 6 HP VOLUME 50 7 AVL OFF 8 SUBWOOFER OFF 9 BLUE SCREEN OFF 10 TURBO SOUND OFF 11 PICTURE SMART PERSONAL 12 WHITE DRIVE NORMAL 13 DNR MEDIUM 14 LANGUAGE GERMAN 15 COUNTRY DENMARK 16 TXT LANGUAGE WEST EUROPE 17 EXT2 OUTPUT TV 18 LINE OUTPUT TV 19 RC STANDARD ON 20 RC SHARP OFF 21 RC TOSHIBA OFF 22 APS OFF These values may change upon cus...

Page 73: ... PANORAMA ITALIANO ITALIANO SPAIN SUBTITLE NORVEGIAN NORSK SWEDEN FINNISH SUOMI SWITZERLAND DANISH DANSK UK SLOVAKIAN SLOVENSKÝ ROMANIA UKRAINIAN TURKISH TÜRKÇE CZECH C Y CROATIAN HRVATSKI BULGARIAN DUTCH NEDERLANDS TEXT LANGUAGE GROUPS WEST EURPOE EAST EUROPE GREEK TURKEY RUSSIAN ENGLISH X X FRENCH X X X SCAND SWEDISH FINNISH DANISH X X X CZECH SLOVAK X X X GERMAN DUTCH FLEMISH X X X X SPANISH PO...

Page 74: ...50 AK53 DOC Service Manual 22 03 2004 16 BLOCK DIAGRAM ...

Page 75: ...51 AK53 DOC Service Manual 22 03 2004 17 CIRCUIT DIAGRAMS 11AK53 1 SMALL SIGNAL ...

Page 76: ...52 AK53 DOC Service Manual 22 03 2004 11AK53 2 SMPS ...

Page 77: ...53 AK53 DOC Service Manual 22 03 2004 11AK53 3 DEFLECTION ...

Page 78: ...54 AK53 DOC Service Manual 22 03 2004 11AK53 4 AUDIO POWER AMPLIFIER ...

Page 79: ...55 AK53 DOC Service Manual 22 03 2004 11FB53 1 STEP DOWN CONVERTER PLUS SUPPLY ...

Page 80: ...56 AK53 DOC Service Manual 22 03 2004 11FB53 2 AUDIO VIDEO SWITCHING IF ...

Page 81: ...57 AK53 DOC Service Manual 22 03 2004 11FB53 3 VIDEO AUDIO DEFLECTION MICRO PROCESSING ...

Page 82: ...58 AK53 DOC Service Manual 22 03 2004 11TP53 ...

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Summary of Contents for 32LF-94EC

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Sharp 32LF-94EC, Service Manual, Page: 35 / 82

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Summary of Contents for 32LF-94EC

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