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Toshiba 32WH37G, Service Manual

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Toshiba 32WH37G Service Manual Download Page 39

Summary of Contents for 32WH37G

Page 1: ...SERVICE MANUAL PRINTED IN UK 2003 C COLOURTELEVISION 32WH37G TOSHIBA 050 200267 AK41 Chassis ...

Page 2: ...z FEATURE BOX 11 VPC32X5 VIDEO PROESSOR 11 CIP3250 12 13 SDA9400 13 14 15 DDP3310 15 16 AK41 CHASSIS MANUALADJUSTMENTS PROCEDURE 17 PRELIMINARY 17 SYSTEM VOLTAGEAJUSTMENT 17 AFCADJUSTMENT 17 FOCUSADJUSTMENT 17 SCREENADJUSTMENT 17 IFADJUSTMENT FOR L MODE 17 AK41 CHASSIS PRODUCTION MODE ADJUSTMENTS PROCEDURE 18 PRELIMINARY 18 HORIZONTALAND VERTICALGEOMETRY ALIGNMENTS 18 V SHIFT 18 V SIZE 18 H SHIFT ...

Page 3: ...ue 5 Ground Blue 6 Audio left input 0 5Vrms 10K 6 Audio left input 0 5Vrms 10K 7 Blue input 0 7Vpp 75ohm 7 Blue input 0 7Vpp 75ohm 8 AV switching input 0 12VDC 10K 8 AV switching input 0 12VDC 10K 9 Ground Green 9 Ground Green 10 10 11 Green input 0 7Vpp 75ohm 11 12 12 13 Ground Red 13 Ground Red 14 Ground Blanking 14 Ground Blanking 15 Red input 0 7Vpp 75ohm 15 16 Blanking input 0 0 4VDC 1 3VDC 7...

Page 4: ...ppression Time n Synchronization and Fixed Frequency Facility n Over and Under voltage Lockout n Switch Off at Mains Under voltage n Mains Voltage Dependent Fold Back Point Correction n Low Power Consumption n Free usable Fault Comparators Pinning 1 OTC Off Time Circuit 2 PCS Primary Current Simulation 3 RZI Regulation and Zero Crossing Input 4 SRC Soft Start and Regulation Capacitor 5 OCI Opto Co...

Page 5: ...r AGC current 2mA 11 Available tuner AGC current Min 0 3V Max 13 5V 12 Video output Min 1 8V Max 2 2V 13 Standard switch Min 0V Max 0 8V 14 L switch Min 0V Max 3 0V 15 IF gain control range 65dB 16 Ground 17 Internal reference voltage 18 FPLL and VCO Min 1mA Max 4mA 19 AFC switch Min 0V Max 0 8V 20 FPLL and VCO Min 1mA Max 4mA 21 FPLL and VCO Min 1mA Max 4mA 22 AFC output 0 7 mA kHz 23 DC supplay ...

Page 6: ... necessary for tuning the open loop frequency of the internal PLL and for stabilising the frequency in closed loop operation The higher the capacitors the lower the clock frequency result The nominal free running frequency should match the centre of the tolerance range between 18 433 and 18 431Mhz as closely as possible By means of standardised I2S interface additional feature processors DPL35xx D...

Page 7: ...rt input 1 in left 65 I S2 data input 32 Analog Shield Ground 2 66 Digital ground 33 Scart input 2 in right 67 Digital power supply 5V 34 Scart input 2 in left 68 ADR clock DOLBY PRO LOGIC PROCESSOR IC DPL3519A The IC DPL3519A processor family is designed to decode Dolby encoded surround sound The IC integrate the complete Dolby Surround Pro Logic decoding on chip without any necessary external ci...

Page 8: ...s n Wide temperature range n No switch ON OFF clicks n Excellent power supply ripple rejection n Low power consumption n Short circuit resistant n High performance high signal to noise ratio high slew rate low distortion n Large output voltage swing Pinning 1 OutputA Voltage swing Min 0 75V Max 4 25V 2 Inverting inputA Vo clip Min 1400mVrms 3 Non inverting inputA 2 5V 4 Ground 5 Non inverting inpu...

Page 9: ...ax 3mA 9 Vcc 12V 10 Input Max 2Vpp Input Current 1mA Max 3mA 11 Input Max 2Vpp Input Current 1mA Max 3mA 12 Ground 13 Output 5 5Vpp Min 4 5Vpp 14 Output 5 5Vpp Min 4 5Vpp 15 Output 5 5Vpp Min 4 5Vpp 16 Output 5 5Vpp Min 4 5Vpp 17 Output 5 5Vpp Min 4 5Vpp 18 Output 5 5Vpp Min 4 5Vpp 19 Ground 20 Input Max 2Vpp Input Current 1mA Max 3mA VIDEO OUTPUT AMPLIFIER STAGE TDA6111Q The TDA6111Q is a video o...

Page 10: ...ters and additional interrupts etc The on chip display unit for displaying Level 1 5 teletext data can also be used for customer defined on screen displays Internal XRAM consists of up to17 Kbytes AK41 has the version without internal ROM This device can support external memory up to 1Mbyte ROM and RAM TVTEXT Controller con tains a data slicer for VPS WSS PDC and TXT an acceleration acquisition ha...

Page 11: ... 3 4 7 One 4 bit I O port with secondary functions P4 0 4 1 4 4 SERIAL ACCESS 32K EEPROM 24LC32 W It is the 32Kbit electrically erasable programmable memory The memory is compatible with the I2C standard two wire serial interface which uses a bi directional data bus and serial clock Features n Single supply with 3 3V operation down to 2 5V n Compatible with I2C extended addressing n 2 wire I2C ser...

Page 12: ...ration and luma chroma inputs in the SVHS applications there are also R G B FB inputs from the PIP module OSD R G B FB inputs from the Megatext IC or from the controller in the case of TV text option While the 50Hz sync signals for PIP are supplied by the VPC3215 the 100Hz sync signals for OSD are supplied by the DDP3310 Control signals for HV stage such as VertQ Vert HDrive EW East West and SVM S...

Page 13: ...Video 2Analog Input 18 Double Output Clock 62 Video 1Analog Input 19 Output Clock 63 Chroma Video 4 Analog Input 20 29 Picture Bus Luma 64 Analog Video Output 26 Ground 65 Analog Shield GND F 27 Not Connected 66 Supply Voltage Analog Front End 30 Main Clock Output 20 25 MHz 67 Signal Ground forAnalog Input 31 Supply Volt 68 Reference Voltage Top Analog 34 Ground CIP3250 The IC is used to interface...

Page 14: ...nal Capacitor 28 Active Video Output 60 Substrate connect to ground 29 Active Video Input 61 Fast Blank Input 30 Front Sync Input 62 Ground Fast Blank 31 I C Clock Input Output 63 Blue U Input 32 I C Data Input Output 64 Ground Blue U 33 35 Picture Bus Priority 65 Green Luma Input 36 43 Chroma Input 66 Ground Green Luma 44 51 Luma Input 67 Red V Input 52 Digital Ground 68 Ground Red V 53 Digital S...

Page 15: ...ncept Decoupling of the input and output clock system possible Scan rate conversion Motion adaptive 100 120 Hz interlaced scan conversion Motion adaptive 50 60 Hz progressive scan conversion Simple static interlaced and progressive conversion modes for 100 120 Hz interlaced or 50 60 Hz progressive scan conversion e g ABAB AABB AA B B AAAA BBBB AB AA Simple progressive scan conversion with joint li...

Page 16: ...tual video signal OSD and VGA are accomplished by the blocks in DDP Tube measurement and SVM controls are also managed by this IC Features Video processing linear horizontal scaling 0 25 4 non linear horizontal scaling panoramavision dynamic peaking soft limiter gamma correction color transient improvement programmable RGB matrix picture frame generator two analog RGB Fast Blank inputs Deflection ...

Page 17: ...Test Pin 12 Select of H Drv Freq Range 39 Reset Input active low 13 Clock Sel 40 5 or 27 32MHz 40 PWM out 14 Clock select 27 32 MHz 41 PWM out 15 Range Switch2 MeasureADC 42 Half Contrast 16 Range Switch1 MeasureADC 43 50 Picture Bus Chroma 17 SenseADC Input 51 Supply Volt Digital Circuitry 18 Ground MADC Input 52 Ground Digital Circuitry 19 Differential Vert Sawtooth Out 53 Sys Clock Input 27 32 ...

Page 18: ...lts TV should automatically tune to a station when search tuning is activated D FOCUS ADJUSTMENT Inputs AC power PAL B G test pattern via RF input Outputs Picture tube drive Display Picture Action Select TV mode and tune to the signal Adjust focus potentiometer the upper pot on the rear side of the FBT transformer for optimum focusing drive E SCREEN ADJUSTMENT Inputs AC power PAL B G Colour Bar te...

Page 19: ...est pattern is horizontally in equal distance both to right and left sides of the picture tube Check and readjust H SHIFT item if the adjustment becomes improper after some other geometric adjustments are done 4 H SIZE Adjust H WIDTH item by pressing cursor left and or cursor right buttons till no under scan condition will happen i e no white bars on the left and right side of the test pattern wil...

Page 20: ...d BGn by cursor up and or cursor down buttons and change the values by cursor left and or cursor right buttons till the following values are read X 285 10 Y 293 10 on the colour analyser 2 RRf GRf BRf Set the values of these items as 62 constant 3 YDF Apply COLOUR BAR test pattern Select YDF item cursor up and or cursor down buttons Adjust YDF by pressing cursor left and or cursor right buttons ti...

Page 21: ...of the PIP frame edges of the PIP EHTHP EHT compensation coefficient for horizontal phase EHTHTC EHT time contant for horizontal phase compensation EHTH EHT compensation coefficient for horizontal amplitude EHTV EHT compensation coefficient for vertical amplitude EHTV TC time contant for control of vertical and horizontal amplitude EHT compenzation 0 means off OSD LEVEL contast level of the OSD IN...

Page 22: ... 5 5 6 6 2 6 5 5 6 1 7 7 8 5 2 0 2 8 0 2 B 6 7 7 7 5 7 2 5 9 5 7 6 7 9 6 6 9 6 6 6 5 7 5 6 9 0 0 8 7 3 5 2 7 8 6 5 6 6 6 7 H U U H V W H U L D O 7 X Q H U 7 0 6 3 3 9 3 3 6 3 6 6 6 5 6 6 2 8 1 2 5 1 9 6 7 1 2 5 7 9 L G H R 6 Z L W F K L Q J 0 D W U L 6 5 7 6 5 7 0 6 3 U R Q W B 9 6 6 6 6 0 2 1 2 1 4 6 6 3 6 0 1 B 5 6 7 5 3 2 1 H Q W H U 6 X U R X Q G 5 5 0 1 B 9 6 7 H W B 9 6 6 B 6 6 9 6 B 6 B 5 6...

Page 23: ...Schematics ...

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Page 52: ...Parts List ...

Page 53: ...08 HIPS NATURAL G 0 014 54 V60000927 CRYSTAL PS NATURAL G 7 000 55 V20094352 LENS PRE AMP XX41 I PC 1 000 56 V60000927 CRYSTAL PS NATURAL G 0 002 57 V20106209 BUTTON ON OFF XX41 SILVER P PC 1 000 58 V20106210 BUTTON ON OFF XX41 EKO GRAY I PC 1 000 59 V60000001 ABS NATURAL KG 0 005 60 V60001195 MASTERBATCH EKO GRAY GR 3216 SE1 G 0 026 61 V60000895 PAINT SILVER 022 6485 SU BAZLI L8341413 KG 0 002 62...

Page 54: ... 0805 PC 4 000 R003 R080 R086 R092 129 V30000721 RES SMD 1 10W 4 7K J PC 4 000 R074 R075 R076 R165 130 V30000797 RES SMD 1 10W 75R J 0805 PC 21 000 R024 R026 R028 R030 R047 R053 R054 R055 R056 R057 R058 R059 R082 R088 R094 R150 R151 R152 R153 R154 R140 131 V30000833 RES SMD 1 10W 91R J PC 1 000 R031 132 V30001284 DIODE 1N4148 0 15A 100V 0 5A PC 3 000 D001 D002 D003 134 V30006462 RES SMD 1 10W 22R ...

Page 55: ...7 R549 R597 R600 214 V30000480 RES SMD 1 10W 100K J 0805 PC 2 000 R577 R578 215 V30000503 RES SMD 1 10W 12K J 0805 PC 2 000 R583 R585 216 V30000588 RES SMD 1 10W 220R J 0805 PC 2 000 R580 R581 217 V30000626 RES SMD 1 10W 270R J PC 1 000 R507 218 V30000636 RES SMD 1 10W 27K J 0805 PC 2 000 R584 R586 219 V30000717 RES SMD 1 10W 470R J 0805 PC 5 000 R541 R544 R548 R560 R596 220 V30000721 RES SMD 1 10...

Page 56: ...VR127 318 V30001077 RES MO 2W 10R J PC 1 000 R264 319 V30001089 RES MO 2W 1R J PC 1 000 R156 320 V30001134 RES MO 2W 2 2R J PC 1 000 R255 321 V30001168 RES MO 2W 470RJ PC 1 000 R226 322 V30001229 RES FUSE 1W 2 2R J PC 1 000 R231 323 V30001265 NTC MONITOR 10R 3A SCK 103 PC 1 000 J412 324 V30001299 DIODE UF5404 3A 400V 150A PC 3 000 D111 D210 D211 325 V30001762 CONN HEADER 2P 2 5MM 9 7MM TOP PC 1 00...

Page 57: ... 4KV M E PC 1 000 C122 418 V30001086 RES MO 2W 10K J PC 1 000 R225 419 V30001270 PTC 9 OHM PC 1 000 R109 420 V30007728 CABLE 1P R2 6 50 W CLIPS PC 1 000 KXX1 421 V20117602 PR IC 41 AK41J A 32 SF PC 1 000 422 V20118227 PR IC 41 AK41J A030 PC 1 000 423 V30016491 IC 27W401 PC 1 000 IC304 426 V30000717 RES SMD 1 10W 470R J 0805 PC 2 000 R809 R811 428 V30007021 RES SMD 1 10W 1K F 0805 PC 1 000 R137 429...

Page 58: ...441 537 V30000263 CAP SMD 56PF 50V J CH 0805 PC 1 000 C107 538 V30000289 CAP SMD 10NF 50V K R 0805 PC 1 000 C252 539 V30000294 CAP SMD 100NF 50V K 0805 PC 34 000 C102 C142 C143 C148 C149 C253 C255 C305 C324 C333 C454 C409 C410 C413 C414 C442 C468 C478 C805 C417 C418 C419 C427 C428 C807 C457 C451 C492 C497 C498 C505 C103 C933 C168 540 V30000304 CAP SMD 1 8NF 50V K R 0805 PC 2 000 C257 C250 541 V300...

Page 59: ...067 GLUE SMD PANASONIC G 0 071 615 V30000560 RES CF 1 4W 1 8K J PC 1 000 R439 616 V30000655 RES CF 1 4W 330R J PC 1 000 R438 617 V30000665 RES CF 1 4W 33K J PC 1 000 R401 618 V30000779 RES CF 1 4W 68K J PC 1 000 R905 619 V30001987 FIXED COIL 4 7UH Q70 K A PC 1 000 L405 621 V30000071 CAP MKT 10NF 63V J PC 2 000 C934 C935 622 V30000250 CAP CER 390PF 50V J CH PC 1 000 C931 623 V30000355 CAP EL 100UF ...

Page 60: ... 1 000 D100 724 V30002852 XTAL REZ 455KHZ PC 1 000 X100 725 V35002401 BATTERY CONT SINGLE RC2040 PC 1 000 726 V35005008 BATTERY CONT SINGLE RC2040 TOSHIBA PC 1 000 727 V35000228 SCREW SK C ZNSY YSMB 2 9 9 5 PC 1 000 728 V35005007 DOUBLE BATTERY CONTACT UKV 900 TOSHIBA PC 1 000 729 V40005467 LENS RC2040 I PC 1 000 730 V40010082 RUBBER PAD TRP41 RC 2143 TOSHIBA PC 1 000 731 V40012344 SPONGE BATTERY ...

Page 61: ...B PC 1 000 801 V35000158 NUT C ZN BOTTOM M3 PC 1 000 802 V35000165 KNURL WASHER C ZNSY 3 6 04 M3 PC 1 000 803 V35000189 SCREW C NI YSMB M3 6 PC 1 000 804 V30000072 CAP MKT 10NF 1250V J PC 1 000 C914 805 V30000075 CAP MKT 100NF 250V K DC PC 5 000 C903 C907 C911 C922 C936 806 V30000406 CAP EL 47UF 250V M HR 105 PC 1 000 C923 807 V30000415 CAP EL 4 7UF 250V M PC 1 000 C915 808 V30001084 RES MO 1W 1K ...

Page 62: ...Cabinet Exploded View N A ...

Page 63: ...TOSHIBA Information Systems UK Ltd Consumer Products Division European Service Centre Admiralty Way Camberley Surrey GU15 3DT ...

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