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Toshiba 40WH08B, Service Manual

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Toshiba 40WH08B Service Manual Download Page 4

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GENERAL ADJUSTMENTS

CRT ASSEMBLY REPLACEMENT AND MOUNTING

CAUTION : DO NOT LOOSEN THE HEX HEAD BOLTS WITH SPRINGS (12 PCS), BECAUSE THOSE ARE FOR

SEALING OF CRT COOLANT.

Lens and Neck Components View

4 Screws

CRT Anode Cap Assembly

S.V.M. Coil

CRT DRIVE Board

Lens Assembly

CRT Assembly

Deflection Yoke and Conver Yoke

CRT Mounting

4 Screws

Attention Serviceman

The Hex Head
Bolts with
Springs. (see
sketch) used on
CRT assembly,
are “NOT” 

Adjustment Screws
DO NOT LOOSEN-FLUID
LEAKAGE WILL OCCUR.

Summary of Contents for 40WH08B

Page 1: ...TOSHIBA CORPORATION 1 1 SHIBAURA 1 CHOME MINATO KU TOKYO 105 8001 JAPAN PRINTED IN JAPAN Jun 1999 T FILE NO 030 200004 SERVICE MANUAL COLOUR TELEVISION C00P Chassis 40WH08G 40WH08B ...

Page 2: ...DE 10 DESIGN MODE 13 ELECTRICAL ADJUSTMENT 14 CONVERGENCE ADJUSTMENT 22 SCREEN AND MIRROR ALIGNMENTS 31 CIRCUIT CHECKS 32 CHAPTER 2 SPECIFIC INFORMATIONS SETTING ADJUSTING DATA 33 LOCATION OF CONTROLS 34 CIRCUIT BLOCK DIAGRAM 36 MECHANICAL DISASSEMBLY 37 CHASSIS AND CABINET REPLACEMENT PARTS LIST 38 PC BOARDS BOTTOM VIEW 65 TERMINAL VIEW OF TRANSISTORS 80 SPECIFICATIONS 81 APPENDIX CIRCUIT DIAGRAM...

Page 3: ... by anyone unfamiliar with the necessary precautions on this receiver The following are the necessary precautions to be observed before servicing this chassis 1 An isolation transformer should be connected in the power line between the receiver and the AC line before any service is performed on the receiver 2 Always discharge the picture tube anode to the CRT conductive coating before handling the...

Page 4: ...R SEALING OF CRT COOLANT Lens and Neck Components View 4 Screws CRT Anode Cap Assembly S V M Coil CRT DRIVE Board Lens Assembly CRT Assembly Deflection Yoke and Conver Yoke CRT Mounting 4 Screws Attention Serviceman The Hex Head Bolts with Springs see sketch used on CRT assembly are NOT Adjustment Screws DO NOT LOOSEN FLUID LEAKAGE WILL OCCUR ...

Page 5: ...CTURE TILT ADJUSTMENT page 7 4 USER CONVERGENCE CENTER CHECK Refer to owner s manual 5 CENTERING ADJUSTMENT page 7 6 CONVERGENCE ADJUSTMENT page 22 7 WHITE BALANCE ADJUSTMENT page 14 Adjustments are complete SERVICING PRECAUTIONS Check the point of anode lead in a straight line if it is winding please revise it Anode lead holder Do not use a magnetized screw driver for screws of Deflection Yoke an...

Page 6: ...utton on Remote Return to Normal Picture 1 2 S V M COIL RGB FOCUS ADJUSTMENT 1 Call up the adjustment mode see page 10 2 Press a button on the remote controller in order to display the internally generated black cross hatch See TEST SIGNAL SELECTION on page 11 3 Expose only RED by covering the GREEN and BLUE lenses with caps 4 Loosen the RED lens fixing screws refer to Fig a and adjust the RED len...

Page 7: ...ipheral screen sections 17 Use the focus VR of B of the focus pack in order to adjust the focus in the middle section of the screen to its sharpest level The point of the Blue focus becomes sharpest when the brightness level of BLUE is lowest the cross hatch is clearly visible TILT ADJUSTMENT Rotate R G B deflection yoke so that picture becomes hori zon then fasten screw CENTERING ADJUSTMENT 1 Str...

Page 8: ...eplacing Anode Lead or Anode Cap with new one remove Lead Holder from old lead as shown in figure below and put it on new lead Do not throw away Lead Holder NOTE THE LEAD HOLDER IS ATTACHED TO TPA5007 Z450 BUT IS NOT ATTACHEDTO ANODE LEAD AND ANODE CAP RUBBER BOOT IS ATTACHEDTO ANODE LEAD AND ANODE CAP 2 Detaching Lead Holder RUBBER BOOT OLD ANODE LEAD or ANODE CAP LOCK LEAD HOLDER Cut here rubber...

Page 9: ... OF THIS MANUAL SERVICE POSITION In order to assure the performance processed wires shall be replaced after the repair work Work procedures are as follows 1 Remove the back board 2 Remove lead wires 3 Draw out the chassis 4 Rest the chassis against the back cabinet chassis as shown bellow After repair work finished replace it in the opposite procedure ...

Page 10: ...a value Volume on TV or Remote Adjustment menu mode ON OFF MENU button on TV Initialization of the memory QA02 CALL Channel button on TV s Reset the count of operating protect circuit to 00 CALL Channel button on TV t RCUT selection 1 button GCUT selection 2 button BCUT selection 3 button SCNT selection 4 button COLC selection 5 button TNTC selection 6 button Convergence adj YELLOW button Self dia...

Page 11: ...tialization is required 1 Enter the service mode then select any register item 2 Press and hold the CALL button on the Remote then press the CHANNEL s button on the TV The initialization of QA02 has been complated 3 Check the picture carefully If necessary adjust any adjustment item above Perform Auto search Memory on the owner s manual CAUTION Never attempt to initialize the data unless QA02 has ...

Page 12: ...Mbit Unknown 4Mbit FLASH ROM EEPROM access failed No EEPROM 8kbit EEPROM SELFCHECK EPG TEXT QF01 XXX QF10 XXX QF02 XXX QF03 XXX QF04 XXX QF05 XXX 2300 POWER 00 BUS CONT OK BLOCK UV V1 V2 V3 QV01 SELF CHECK 1 Part number of microcomputer QA01 2 Total hour of turn the Power on unit hour 3 Operation number of protecting circuit 00 is nor mal When indication is other than 00 overcurrent apts to flow a...

Page 13: ...resentative model of this chassis family Therefore because ON SCREEN specification remains in the state of the representative of model This model is required to reset the data of items OPT0 and OPT1 2 SELECTING THE ADJUSTING ITEMS Every pressing of CHANNEL t button in the design mode changes the adjustment items in the order of table 3 s button for reverse order Refer to table 3 for data of design...

Page 14: ... correct HEIGHT HIT ITEM ADJUSTMENT PROCEDURE WHITE BALANCE RCUT GCUT BCUT RDRV BDRV Black and White pattern 1 Set user control to reset position CONTRAST Max BRIGHTNESS COLOR TINT Center 2 Call up the adjustment mode display then select the item RCUT 3 Adjust the data of items RCUT GCUT and BCUT to 40H 4 Press the Info button on Remote control Y MUTE ON 5 Gradually rotate R G and B screen volume ...

Page 15: ...creen adjustment TP46B SIGNAL unit TP46B SIGNAL unit TP02 SIGNAL unit TP01 SIGNAL unit y Adjust the amplitude from the pedestal level to the white peak y Adjust the number of collapsed black bars of the sub bright signal x Carry out adjustment after adjusting the W B and SCNT y Adjust the amplitude of the color bar x Adjust the P P value of the upper half y Adjust the amplitude of the color bar x ...

Page 16: ...nt mode Y mute DRV CUT 40 H c Directly observe the CRT screen and adjust the screen VR to the point where it begins to emit light v Use R G and B tubes respectively to perform above mentioned adjustments y Make adjustments to achieve the best possible position by repeating electrical and optical focusing x Use jigs to protect the CRTs except the axis under adjustment from any light c Use R G ad B ...

Page 17: ...y focused 2 Receive the internal crosshatch signals use the focus VR of the focus pack Z410 and adjust the electrical focus of G so that the vertical scanning lines on the screen center can appear most clearly 1 R B Receive the internal Retoma signals watch the screen center and its periphery and make adjustment to the best possible focus 2 G Adjust this by the method y Carry out anticipated adjus...

Page 18: ...nce of G lens focus y Use the left or right end crosshatch and make the best adjustment on the G s lens focus x Check the right or left end focus 3 If the left and right lens focus is not properly balanced tendency for flare divide and adjust it to the middle grade 4 Check on the periphery and make certain that the focus grade lies within a tolerable level including flare Focus adjustment method 2...

Page 19: ...lap in conformity Carry this out individually on 3 tubes of R G and B Note Do not move HPOS VPOS data 1 Turn the screen size to WIDE 2 In the first place shorten the vertical amplitude using HIT data until the upper and low flags emerge on the screen 3 Then extend the vertical amplitude with the HIT data until either upper or lower flag end conforms to the screen end Adjust the vertical center of ...

Page 20: ...t Screen adjustment Screen adjustment Screen adjustment Screen adjustment 1 Turn the screen size to SUB TITLE 2 Adjust the registers on the top and bottom of the Phillips pattern as shown in the next page Note Do not touch the centering magnet 1 Turn the screen size to WIDE 2 The left and right flags of the Phillips pattern are to contact the screen edge 3 The user center position adjustment is to...

Page 21: ...usting method Adjustment standard NWIDE Horizontal amplitude adjustment WIDE NTSC Picture mode 1 WIDE mode Monosco signals NTSC LEADER 435B Screen adjustment 1 Turn the screen size to WIDE 2 Adjust the 2nd left register to the left edge of the screen Completion of adjustment ...

Page 22: ...re excessively large Before starting to adjust the various screens always adjust the vertical size HIT and horizontal size WID by changing the main deflection data Execute the adjustment screens in the sequence Wide 4 3 Super Live Cinema Subtitle for both PAL and NTSC 1 1 Entering Adjustmet Menu S MENU key F 7 key Menu screen Adjusting screen CONVER ADJUST MENU CALL to exit 1 2 3 4 5 6 7 8 9 10 11...

Page 23: ...key Cursor up adjusting point up i 4 key Cursor left adjusting point left j 8 key Cursor down adjusting point down k 6 key Cursor right adjusting point right l 3 key Cursor colour change Adjusting colour selection m key Excutetion key on convergence menu n s key Up key on convergence menu o t key Down key on convergence menu 1 2 Remote Contr ol Key Fig 2 b h i g j n o k c a m l 1 2 3 4 5 6 7 8 9 0...

Page 24: ...S title screen Select this mode for S title screen color matching and distortion adjustment Use the specified dimensions when adjusting 6 PAL to NTSC Wide PAL Wide 4 3 screen data is calculated converted to NTSC Wide 4 3 approximate data and saved To assure accurate adjustments select the manual mode explained below and check then apply color matching and distortion adjustments 7 PAL to NTSC All D...

Page 25: ...C R and S Select Menu are displayed as the defaults The cursor can now be moved up down left and right using the 2 8 4 and 6 keys of the remote control Select the desired adjustment and press the 5 key the cursor will light steady and the screen display will be cleared Again press the 2 8 4 and 6 keys of the remote control to adjust the shape of the screen When adjustment has been completed press ...

Page 26: ... various screens are checked In such case adjust the main deflection and apply a slight amount of convergence color matching 2 3 When none of the above cases apply rare case An unexpected situation or major operational error etc could be considered but it is recommended that all screens be matched starting from the beginning If the initial positions of the centering magnets are unknown disconnect ...

Page 27: ...2 Super Wide PAL mode 432 5 228 0 76 0 380 0 432 5 228 0 76 0 380 0 0 235 207 5 124 5 41 5 41 5 235 207 5 124 5 0 428 0 218 5 72 5 372 0 428 0 218 5 72 5 372 0 0 249 0 220 0 130 5 40 49 5 249 0 221 0 136 5 0 5 screen center pattern center Caution Do not perform the VLIN adjustment ...

Page 28: ...5 262 5 227 5 157 5 0 3 4 Subtitle PAL mode Note The cursor will move outside the screen limits in the Subtitle mode therefore be careful to consider the position of the cursor displayed on the screen when making adjustments Note Please be aware that the Subtitle screen convergence pattern center is located at the center of the screen but the image center is located approximately 13mm above that 4...

Page 29: ...e 432 5 228 0 76 0 380 0 432 5 228 0 76 0 380 0 0 231 198 99 231 198 99 0 428 0 218 5 72 5 372 0 428 0 218 5 72 5 372 0 0 213 249 105 249 216 112 0 5 Caution Do not perform the VLIN adjustment 3 6 Super Live NTSC mode screen center pattern center ...

Page 30: ...cated approximately 13mm above that 432 5 228 0 76 0 380 0 432 5 228 0 76 0 380 0 0 266 228 114 266 114 228 0 3 8 Subtitle NTSC mode Note The cursor will move outside the screen limits in the Subtitle mode therefore be careful to consider the position of the cursor displayed on the screen when making adjustments Note Please be aware that the Subtitle screen convergence pattern center is located at...

Page 31: ... into which a cleaning liquid has been soaked Cleaning liquid LENS LUSTER Manufactured by Edmund Scientific Co etc HOW TO CLEAN SCREEN When cleaning the screen use a soft cloth so as not to dam age the screen 1 Wipe the stain away with a diluted neutral detergent soaked cloth 2 Wipe the detergent away with a water soaked cloth 3 Wipe the screen with a dry cloth to remove moisture on the screen Not...

Page 32: ...g this high voltage High voltages are also present in surrounding circuit boards CRT DRIVE assembly DEFLECTION assembly and POWER SUPPLY assembly 1 Disconnect the FBT anode cable as outlined below Measure high voltage at the point where the cable enters the FBT 2 Holding the rubber cover firmly turn it counterclockwise and check that the lock has been disengaged See Fig b on page 8 3 Determine the...

Page 33: ... WIDE 3FH 11H HIT VLIN ITEM Reference data by Picture Size Item Adjustment Reference data HPOS This data is not a service item of WH08 described references data for wide VPOS HIT VLIN VSC VPS WID PARA TRAP CNR VCEN 50Hz H POSITION V POSITION HEIGHT Table 2 1 V LINEARITY Table 2 1 V S CORRECTION V SHIFT PICTURE WIDTH E W PARABOLA E W CORNER TRAPEZIUM V CENTER 67H WIDE 09H WIDE 3FH WIDE 11H WIDE 0BH...

Page 34: ... COAXIAL DIGITAL AUDIO INPUT OPTICAL WOOFER OUT VIDEO 1 21PINS FULL VIDEO 2 21PINS S VIDEO AV AERIAL TERMINAL AUDIO OUT FIXED VIDEO 4 COMP VIDEO IN VIDEO 3 21PINS S VIDEO AV HEAD PHONE VIDEO 3 S VIDEO TERMINAL VIDEO 3 MENU VOLUME DOWN VOLUME UP POSITION DOWN MAIN SWITCH POWER RED ON TIMER GREEN BILINGUAL ORANGE STEREO GREEN EXIT POSITION UP ...

Page 35: ...Video Recoder DVD Buttons to operate your Toshiba Video Recorder DVD INFO Buttons Power ON OFF CALL Teletext Programme Position up down VIDEO Picture Controls Menu Control Buttons ENTER EXIT Stereo Bilingual Sound Mute Volume SIZE Button 1 2 3 4 5 6 7 8 9 0 P P F SIZE CALL TEXT INFO NexTView TV ENTER MENU EXIT VTR DVD VTR DVD P ...

Page 36: ...MAA H001 H002 L R SL SR C L R C SL SR W L R OUT 1 TV L R TV V ANT DIGITAL AUDIO IN W OUT AMP W AV SW QV01 E1 E2 E3 I O1 I O2 I O3 8 8 8 TV L R out V L R OUT 2 AUDIO OUT FIX RGBYs Y V C L R S1 V1 V L R S2 FRONT S AV MICRO PROCESSOR QA01 EEP ROM QA02 CLK DATA CS BUSY RST SGV SDA3 SCL3 SDA SCL SYNC AV SYNC OUT RGB MULTI COLOR DECODER Q501 EPG SW CVBSout Y1 in Yviout SYNCin YCbCr HD VD RGB1in E4 YCbCr...

Page 37: ...SPECIFIC INFORMATIONS MECHANICAL DISASSEMBLY K502 16 SCREWS K501 K601 10 SCREWS 8 SCREWS A420 A202 A201 A213 A214 A223 A102 A103 K101 K102 K103 6 SCREWS LABELS 8 SCREWS A424 A262 A262 A264 SCREWS A268 A101 ...

Page 38: ...0V C205 24669229 EL 2 2 F 20 50V C206 24206220 EL 22 F 20 50V C212 24794100 EL 10 F 20 16V C214 24567334 PF 0 33 F C215 24436101 CD 100pF C219 24436100 CD 10pF 0 25pF C220 24436100 CD 10pF 0 25pF C221 24436100 CD 10pF 0 25pF C229 24092398 CD 0 1 F 80 20 25V C230 24232103 CD 0 01 F 80 20 C232 24092398 CD 0 1 F 80 20 25V C261 24669101 EL 100 F 20 50V C262 24232103 CD 0 01 F 80 20 C263 24794470 EL 47...

Page 39: ...44 2SA1788 2SA1306 2SA1186A 3 2SC752GTM 2SC2482 2SC2655 2SC4721P 4 2SC752 2SA562TM 2SA1015 2SC1815 2SC2878 2SC1740S 2SC2120 2SA9335 5 2SA1788 6 RN2203 RN2201 RN2004 RN1203 RN1204 RN2204 RN1205 RN1202 RN1201 E C B B C E B CE BCE B C E E C B E C B 7 2SD1554 2SD2253 2SD1556 2SC5143 2SD2553 2SC5144 8 ON4409 B C E ...

Page 40: ...or the parts tabled on back of this sheet Use this service manual together with the original service manual of 36ZP18P 32ZP18P File No 030 200105 FILE NO 033 200205 SERVICE MANUAL COLOUR TELEVISION C00S Chassis 32ZP18Q PUBLISHED IN JAPAN Feb 2002 So ...

Page 41: ...QT11 23009114 IC BD4746G TR QT12 23314994 Transistor 2SA1576AT106 QT13 23314994 Transistor 2SA1576AT106 QT14 23314994 Transistor 2SA1576AT106 QT15 23314994 Transistor 2SA1576AT106 Location No Part No Description QX02 23000198 IC EM636327Q 8 QX21 23318824 IC TC7S08F T85L RT01 24011101 Chip 100 ohm 1 20W RT02 24011101 Chip 100 ohm 1 20W RT03 24011102 Chip 1k ohm 1 20W RT04 24011102 Chip 1k ohm 1 20W...

Page 42: ...e following marks 1 2R Metal or Metal oxide of 1 2 watt 1 2S Carbon compsistion of 1 2 watt 1RF Fuse resistor of 1 watt 10W Cement of 10 watt K 10 G 2 F 1 2 CAPACITOR Unless otherwise noted in schematic all capacitor values less than 1 are expressed in F and the values more than 1 in pF All capacitors are ceramic 50V unless otherwise noted as the following marks Electolytic capacitor Mylar capacit...

Page 43: ...h DIGITAL MULTI METER from point indicated to chassing ground using a color bar signal with all controls at normal line voltage 220 volts 5 Waveforms are taken receiving color bar signal with enough sensitivity 6 Voltage reading shown are nominal values and may vary 20 except H V NOTE 1 RESISTOR Resistance is shown in ohm K 1 000 M 1 000 000 All resistors are 1 6W and 5 tolerance carbon resistor u...

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