Toshiba 32HFX72 service manual Schematic Diagram

Page 47

SCHEMATIC DIAGRAM

MODEL : 36HFX72 / 36HF72

WARNING: BEFORE SERVICING THIS CHASSIS, READ THE "X-RAY RADIATION PRECAUTION", "SAFETY PRECAUTION" AND "PRODUCT SAFETY NOTICE" ON THE MANUAL FOR THIS MODEL.

CAUTION: The international hazard symbols "*" in the schematic diagram and the parts list designate components which have special characteristics important for safety and should be replaced only with types identical to those in the original circuit or specified in the parts list. The mounting position of replacements is to be identical with originals. Before replacing any of these components, read carefully the PRODUCT SAFETY NOTICE on the MANUAL for this model. Do not degrade the safety of the receiver through improper servicing.

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, unless otherwise noted as the 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 capacitor

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

3.The parts indicated with " * " have special characteristics, and should be replaced with identical parts only.

4.Voltages read with DIGITAL MULTI-METER from point indicated to chassing ground, using a color bar signal with all controls at normal, line voltage 120 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.

SCHEMATIC DIAGRAM STRUCTURE:

 

 

 

 

 

SIGNAL Circuit

 

 

 

 

( BANKAN )

[ SHEET - 1/10 ]

1/21

 

 

 

 

 

 

 

 

 

 

 

 

 

( AV-1 (1) )

[ SHEET - 2/10 ]

2/21

 

 

 

 

 

 

 

 

 

 

 

 

 

 

( AV-1 (2) )

[ SHEET - 3/10 ]

3/21

 

 

 

 

 

 

 

 

 

 

 

 

 

 

( MAICON-1 )

[ SHEET - 4/10 ]

4/21

 

 

 

 

 

 

 

 

 

 

 

 

 

 

( IF )

[ SHEET - 5/10 ]

5/21

 

 

 

 

 

 

 

 

 

 

 

 

 

 

( VCD 1 )

[ SHEET - 6/10 ]

6/21

 

 

 

 

 

 

 

 

 

 

 

 

 

 

( VCD 2 )

[ SHEET - 7/10 ]

7/21

 

 

 

 

 

 

 

 

 

 

 

 

 

 

( LOWB-REG )

[ SHEET - 8/10 ]

8/21

 

 

 

 

 

 

 

 

 

 

 

 

 

 

( AUDIO )

[ SHEET - 9/10 ]

9/21

 

 

 

 

 

 

 

 

 

 

 

 

 

 

( CONNECT )

[ SHEET - 10/10 ]

10/21

 

 

 

 

 

 

 

 

 

POWER / DEF Circuit

 

 

( BANKAN )

[ SHEET - 1/4 ]

11/21

 

 

 

 

 

 

 

 

 

 

 

( H-DEF )

[ SHEET - 2/4 ]

12/21

 

 

 

 

 

 

 

 

 

 

 

 

 

 

( MAIN POW )

[ SHEET - 3/4 ]

13/21

 

 

 

 

 

 

 

 

 

 

 

 

 

 

( V-DEF )

[ SHEET - 4/4 ]

14/21

 

 

 

 

 

 

 

 

 

CRT / SVM Circuit

 

 

( CRT DRIVE )

[ SHEET - 1/2 ]

15/21

 

 

 

 

 

 

 

 

 

 

 

 

( SVM )

[ SHEET - 2/2 ]

16/21

 

 

 

 

 

 

 

 

 

AC INPUT Circuit

 

 

17/21

 

 

 

 

 

 

 

 

 

LOW-B / VERT Circuit

 

 

18/21

 

 

 

 

 

 

 

 

 

SRS-WOW Circuit

 

 

19/21

 

 

 

 

 

CONTROL-1 Circuit

 

 

20/21

 

 

 

 

 

CONTROL-2 Circuit

– 43 –

 

21/21

 

 

 

 

 

 

 

 

 

 

 

 

Image 47
Contents 32HF72, 32HFX72 Toshiba Corporation 36HFX72, 36HF72 Table of Contents Product Safety Notice General Adjustments Safety InstructionsRAY Radiation Precaution Safety PrecautionRubber Wedges SET-UP AdjustmentColor Purity Adjustment Deflection Yoke PURITY/ Conv MagnetSCREEN-CORNER Convergence Convergence Adjustments Center Convergence AdjustmentBLU RED RED/BLUE GRN GRNCenter Convergence SET-UP Adjustment for Flat TubeConvergence Adjustments Color Purity AdustmentInformations Circumference ConvergenceKEY Function in the Service Mode Service ModeEntering to Service Mode Displaying the Adjustment MenuTest Signal Selection Selecting the Adjusting ItemsAdjusting the Data Exit from Service ModeSync Self Diagnostic FunctionSelf Check BUS Line OK BUS Cont OKAdjustment Procedure Electrical AdjustmentsHpos Parabola DPCPara Horizontal PositionYES Circuit ChecksHigh Voltage Check FS Circuit CheckOption Progressive 43 DV Specific Informations Setting & Adjusting DataSafety Instructions Service Mode Adjusting Items and Datas in the Service ModeLocation of Controls Representatives 36HFX72 Remote Control TV/CABLE function Programming Channel MemoryOMF Chassis and Cabinet Replacement Parts ListELECTROLYTIC, 16V 22UF M 3A ELECTROLYTIC, 160V 330UF M 3D Plastic FILM, 50V 0.01MF J Resistors CHIP, Metal FILM, 1/20W 7.5K OHM J Carbon FILM, 1/6W 75 OHM J Carbon FILM, 1/6W 820 OHM J Carbon FILM, 1/6W 1M OHM J 36HFX72 Coils & Transformers Semiconductors IC, PQ30RV1 DIODE, EU2A Miscellaneous Picture Tube Bottom Foil Side Signal Board PD0650POWER/DEF Board PD0159 CRT-D/VM Board PD0164 LOW B Board PB9567 AC in Board PD0161CONTROL-1 Board PD0651 CONTROL-2 Board PD0652 WOW Board PD0645 Terminal View of Transistors Schematic Diagram Structure Signalunit DiagramDimensions Power SourcePower Consumption Audio PowerToshiba Corporation Schematic Diagram Diagram Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page