Toshiba 14AR21, Service Manual

Page 1: ...TOSHIBA FILE NO 050 200119 SERVICE MANUAL COLOR TELEVISION 14AR21 DOCUMENT CREATED IN JAPAN OCT 2001 AUT OVOLT AGE V OL ...

Page 2: ...F THE SET 27 Page CONTENTS MODEL POWER INPUT 110 220 V AC 50 60 Hz POWER RATING 53 W PICTURE SIZE 574cm2 88 97sq inch CONVERGENCE Magnetic SWEEP DEFLECTION Magnetic FOCUS Hi Bi Potential Electrostatic INTERMEDIATE FREQUENCIES Picture IF Carrier Frequency 45 75 MHz Sound IF Carrier Frequency 41 25 MHz Color Sub Carrier Frequency 42 17 MHz Nominal AUDIO POWER OUTPUT RATING 0 9W at 10 distortion ELEC...

Page 3: ...oes not exceed the specified value and that it is regulating correctly 5 Do not use a picture tube other than that specified or make unrecommended circuit modifications to the high voltage circuitry 6 When trouble shooting and taking test measurements on a receiver with excessive high voltage avoid being unnecessarily close to the receiver Do not operate the receiver longer than is necessary to lo...

Page 4: ...rks mechanical insulators and etc 3 To be sure that no shock hazard exists check for leakage current in the following manner Plug the AC cord directly into a 110 220 volt AC outlet Do not use an isolation transformer for this test Using two clip leads connect a 1 5k ohm 10 watt resistor paralleled by a 0 15µF capacitor in series with all exposed metal cabinet parts and a known earth ground such as...

Page 5: ...l CHANNEL UP DOWN Selects next higher channel Selects next lower channel VOLUME UP DOWN Increases sound Decreases sound POWER Press On Press again Off Basic Remote Control Functions POWER Press On Press again Off REMOTE KEYPAD Accesses any channel from keypad RET UR N Returns to previous channel VOLUME UP DOWN Increases sound Decreases sound In menu mode changes or selects the TV adjustments MUTE ...

Page 6: ... 5 V 5 Apply external 27 9V DC at TP653 by using an external DC supply TV must be shut off 6 To reset the protector unplug the AC cord and make a short circuit between TP651 and TP652 Now make sure that normal picture appears on the screen 7 If the operation of the horizontal oscillator does not stop in step 5 the circuit must be repaired before the set is returned to the customer HIGH VOLTAGE CHE...

Page 7: ...t menu to ensure customer controls are in their proper reset position 2 Service item selection Once in the service mode press the Ch up or Ch down button on the remote controller or at the set The service adjustment item will vary in increments of one Select the item you wish to adjust 3 Data number selection Press the Vol up or down button to adjust the data number To enter the service mode and e...

Page 8: ...RI SUB SHARPNESS SUB SHP MAX HOTEL VOLUME HTL VOL HOTEL PROGRAM NO HTL PRG BLUE BACK CONTRAST BB CON OSD GRB REFERENCE RGB BLACK LEVEL OFFSET R CUT R BLACK LEVEL OFFSET G CUT G CATHODE DRIVE LEVEL CDL AGC GEOMETRIC MODE AGC TAKE OVER POINT AGC VERTICAL SLOPE V LIN VERTICAL AMP V AMP VERTICAL SHIFT V CENT VERTICAL ZOOM V ZOOM HORIZONTAL SHIFT H CENT EAST WEST WIDTH H SIZE HORIZONTAL PARALLELOGRAM E...

Page 9: ... FFI ENABLE VERTICAL GUARD EVG EHT TRACKING MODE EHT OVERSCAN SWITCH OFF OSO AUTO COLOUR LIMIT ACL FORCED COLOUR ON FCO VIDEO MUTE AT IDENT LOSS VMI VIDEO MUTE AT PROGRAM SOURCE CHANGE VMC HOTEL MODE HTL GAIN FM DEMODULATOR BTSC CHARGE PUMP CP FM WINDOW SELECTION FMWS SOUND MUTE BIT 0 SM0 SOUND MUTE BIT 1 SM1 IF AGC SPEED BIT 0 AGC0 IF AGC SPEED BIT 1 AGC1 PHI 1 TIME CONSTANT FOR FE FOA FE PHI 1 T...

Page 10: ...PNESS 0 63 32 FIX must be 24 HTL VOL MAX HOTEL VOLUME 0 63 32 FIX HTL PRG HOTEL PROGRAM NO 0 125 or 125 for none 255 FIX BB CON BLUE BACK CONTRAST 0 15 10 FIX must be 5 RGB OSD GRB REFERENCE 0 15 15 FIX must be 15 CUT R BLACK LEVEL OFFSET R 0 63 32 ADJ CUT G BLACK LEVEL OFFSET G 0 63 32 ADJ CDL CATHODE DRIVE LEVEL 0 15 0 FIX must be 2 DL TV Y D TIME TV YD 0 15 12 FIX must be 2 DL AV Y D TIME AV YD...

Page 11: ...nable 0 FIX SPEAKER SPEAKER ON OFF 0 disable or1 enable 0 FIX FAO FIXED AUDIO OUT 0 disable or1 enable 0 FIX VIEW TM VIEW TIMER 0 disable or1 enable 1 FIX must be 1 FRENCH FRENCH LANGUAGE 0 disable or1 enable 0 FIX EZ SETUP EZ SETUP AUTOPRESET 0 AUTOPRESET or 1 FIX 1 EZ SETUP W TEMP WHITE TEMP OR FAVORITE COLOR 0 FC or 1 WT 0 FIX AV AV ENABLED OR DISABLED 0 without ext source or 0 FIX 1 with exter...

Page 12: ...key till the picture is centered 1 Call the V AMP mode 2 Increase or decrease V AMP by Volume key to set overscan of 10 0 typical Adjustment Spec 10 0 range 1 FIXED DATA NO NEED TO ADJUST 1 Call the H CENT mode 2 Increase or decrease H CENT by Volume key to center the picture horizontal 1 2 3 4 5 Focus adjustment 1 Receive the Monoscope Pattern signal 2 Press R C to set Picture NORMAL condition 3 ...

Page 13: ...ightly brighter than line 1 2 and 3 and finally line 5 will be the brighter than line 4 2 1 2 3 are in same black level WHITE BAL ANCE SERV ICE MODE ADJ I2C BUS CONTROL 3 11 600 K X 0 273 Y 0 280 MINOLTA COLOUR ANALYZER CA 100 NOTE Above DATA can be UP DOWN by volume key LOW HIGH 14 1 8cd m2 115cd m2 11 600 K DRI GW DRI GS DATA 5 DRI BW DRI BS DATA 5 1 Receive the Monoscope Pattern signal 2 Press ...

Page 14: ...13 14AR21 CHASSIS LAYOUT 6 5 4 3 2 1 A B C D E F G H ...

Page 15: ...14 14AR21 6 5 4 3 2 1 A B C D E F G H BLOCK DIAGRAM ...

Page 16: ...phs taken on a standard gated color bar signal the tint setting adjusted for proper color The wave shapes at the red green and blue cathodes of the picture tube depend on the tint color level and picture control 2 indicates waveform check points See chart waveforms are measured from point indicated to chassis ground å AND SHADED COMPONENTS SAFETY RELATED PARTS MARK X RAY RELATED PARTS This circuit...

Page 17: ...16 17 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 A B C D E F G H I J SCHEMATIC DIAGRAM MAIN Unit DUNTKA541WEA1 HO142PE ...

Page 18: ...18 14AR21 6 5 4 3 2 1 A B C D E F G H SCHEMATIC DIAGRAM CRT Units DUNTKA542WEA2 ...

Page 19: ...19 14AR21 6 5 4 3 2 1 A B C D E F G H PWB B CRT Unit Wiring Side PWB B CRT Unit Chip Parts Side PRINTED WIRING BOARD ASSEMBLIES ...

Page 20: ...28 6 5 4 3 2 1 A B C D E F G H 14AR21 PWB A MAIN Unit Wiring Side PRINTEDWIRING BOARD ASSEMBLIES 14AR21 ...

Page 21: ...21 14AR21 6 5 4 3 2 1 A B C D E F G H PWB A MAIN Unit Chip Parts Side ...

Page 22: ...2735 AD100598 VS2SD601A 1 Q253 D601A AD100598 VS2SD601A 1 Q254 D601A AD100596 VS2SC3207 1 Q601 C3207 AD100597 VS2SD2586 1E Q602 D2586 AD100595 VS2SC3198 G 1 Q603 C3198 G AD100595 VS2SC3198 G 1 Q751 C3198 G AD100595 VS2SC3198 G 1 Q752 C3198 G AD100594 VS2SB709A 1 Q801 B709A AD100594 VS2SB709A 1 Q802 B709A DIODES AD100423 RH EX0676GEZZ D201 Zener Diode 33V AD100504 VHD1SS119 1 D302 Diode å AD100409 ...

Page 23: ...100465 VCEA0A1HW475M C602 4 7 50V EL AD100460 VCEA0A1HW105M C603 1 0 50V EL AD100467 VCEA0A2EW106M C604 10 250V EL AD100496 VCKYPA2HB102K C605 1000p 500V Ceramic AD100633 VCFPVC2DB684J C606 0 33 200V M Poly AD100634 VCFPVC3ZA532H C607 5300p 1 5kV M Poly AD100496 VCKYPA2HB102K C608 1000p 500V Ceramic AD100454 VCEA0A1CW108M C610 1000 16V EL AD100459 VCEA0A1EW476M C611 47 25V EL AD100458 VCEA0A1CW477...

Page 24: ...6W M Ox AD100644 VRD RA2BE272J R501 2 7k 1 8W Carbon AD100535 VRD RM2HD102J R502 1 0k 1 2W Carbon AD100648 VRN RL3DB2R7J R503 2 7 2W M Film AD100561 VRS CY1JF181J R504 180 1 16W M Ox AD100554 VRS CY1JF102J R505 1 0k 1 16W M Ox AD100653 VRS RG3AB331J R506 330 1W M Ox AD100544 VRN RL3AB1R0J R507 1 0 1W M Film AD100524 VRD RA2BE333J R510 33k 1 8W Carbon AD100561 VRS CY1JF181J R511 180 1 16W M Ox AD10...

Page 25: ...Z J409 Jack AV IN REAR AD100616 QPLGN0241CEZZ P302 Plug 2pin S AD100378 QPLGN0361CEZZ P603 Plug 3pin TP651 3 AD100376 QPLGN0260CEZZ P701 Plug 2pin M AD100380 QPLGN0561CEZZ P1002 Plug 5pin BC AD100431 RRMCU0222CEZZ RMC1001 R C Receiver AD100339 LHLDW1104PEZZ H wire Holder AD100340 LHLDW1105PEZZ K wire Holder AD100344 LX BZ0086TAFD Screw AD100345 LX BZ3049GEFD Screw AD100347 LX TZ3004CEFD Screw AD10...

Page 26: ...0017CEZZ Plug PACKING PARTS NOT REPLACEMENT ITEM AD100627 SPAKC0206GJZZ Packing Case AD100628 SPAKP0104GJZZ Wrapping Paper AD100629 SPAKX0123GJZZ Buffer Material MISCELLANEOUS PARTS CABINET PARTS AD100602 CCABA0166WEH0 1 Front Cabinet Ass y Not Available 1 1 Front Cabinet AD100609 JBTN 0127GJSA 1 2 Power Button AD100349 MSPRC0005PEFW 1 3 Power Spring AD100608 JBTN 0126GJSA 1 4 Control Button AD100...

Page 27: ...No Description Code PACKING OF THE SET REAR Use 12 staples fix the packing case Use tape to fix top side of pack case Packing Case FRONT Buffer Material Wrapping Paper Polyethylene Bag Operation Manual Infrared R C Unit Batteries MARK Not Replacement Items ...

Page 28: ...TOSHIBA CORPORATION 1 1 SHIBAURA 1 CHOME MINATO KU TOKYO 105 8001 JAPAN ...