Sharp 72GF-66E service manual Description of Schematic Diagram

Page 27

72GF-66E

DESCRIPTION OF SCHEMATIC DIAGRAM

SAFETY NOTE:

1.DISCONNECT THE AC PLUG FROM THE AC OUTLET BEFORE REPLACING PARTS.

2.SEMICONDUCTOR HEAT SINKS SHOULD BE REGARDED AS POTENTIAL SHOCK HAZARDS WHEN THE CHASSIS IS OPERATING.

IMPORTANT SAFETY NOTE:

 

PARTS MARKED WITH « ! » (

) ARE

IMPORTANT FOR MAINTAINING THE SAFETY OF THE SET. BE SURE TO REPLACE THESE PARTS WITH SPECIFIED ONES FOR MAINTAIN- ING THE SAFETY AND PERFORMANCE OF THE SET.

SERVICE PRECAUTION:

THE AREA ENCLOSED BY THIS LINE () IS DIRECTLY CONNECTED WITH AC MAINS VOLTAGE.

WHEN SERVICING THE AREA, CONNECT AN ISOLATING TRANSFORMER BETWEEN TV RECEIVER AND AC LINE TO ELIMINATE HAZ- ARD OF ELECTRIC SHOCK.

WAVEFORM MEASUREMENT CONDITION: Colour bar generator signal of 70 dB from RF input.

1

2

GND

GND

580V

1.3 KV 31.25 KHz

5

6

GND

 

NOTE:

1.The unit of resistance «ohm»is omitted (K=1000 ohms. M= Megaohm).

2.All resistors are 1/8 watt. unless otherwise noted.

3.All capacitors are mF, unless otherwise noted (P= mmF).

4.The capacitor with Part No. RC-FZ9XXXBMNJ is designed to with stand 63V.

5.The capacitor with Part No. RC-FZ4XXXBMNJ is designed to with stand 50V.

CAUTION

This circuit diagram is original one, therefore there may be light difference from yours.

3

4

GND

GND

 

4 Vp-p 31.25 KHz

350 Vp-p 100Hz

7

8

41 Vp-p 31.25 KHz

1.8 Vp-p 100Hz

3.3V 100Hz

45 Vp-p 113 KHz FM

9

10

 

 

11

12

19Vp-p 100Hz

GND

 

25 Vp-p 100Hz

1.15 Vp-p 31.25KHz

400Hz

 

 

 

13

 

 

 

 

 

400Hz

27

Image 27
Contents Model 72GF-66E =0.290 Y=0.300 Electrical SpecificationsImportant Servicing Notes Geometry Adjustments Adjustment menuWidth Pin PhaseHorizontal Vertical Horizontal ShiftVertical Bow Lower Corner CorrectionVertical Linearity Vertical AngleVertical Shift Colour AdjustmentsFollow the procedure below to set the Cut Off Follow the procedure below to set the GainAuto Installation On/Off Contrast AdjustmentsDvco Adjustment PAL Dvco Adjustment NtscQKI KITP7293BMN5 QKITP7293BMN5 F7293BMN5 CRT Module Unit Printed Wiring Board F7269N3. Component side CRT Module Unit Printed Wiring Board F7269N3. Copper side Side Copper C6083 Digital Module Unit Printed Wiring Boards F7295NOACopper side Power Switch Unit Printed Wiring Boardsm F7305N0BAudio Amplifier Unit Printed Wiring Boards F7304N0B Audio Amplifier Unit F7304N0B PWB Parts Location TablesComponent side Mother Unit F7293N5A PWB Parts Location Tables FB1CN3 JF9 TRCJF6 JF8JF3 JF2R817 214376 58674 R818 207518 61722 T702 56896 173228 Component Side Copper side CRT Module Unit PWB F7269N3 Parts Location TablesComponent Side. Copper side Front A/V Unit PWB F7306N0B Parts Location TablesDinamic Focus Unit PWB F7271N3 Parts Location Tables Digital Module Unit PWB F7305N0B Parts Location TablesJF5 Digital Module Unit F7295N0B PWB Parts Location TablesRGB JF4Description of Schematic Diagram 72GF 66E IC305 Sharp Schematic Diagram of CRT Module Unit F7269N3, 00 Version Sharp Realizado Verificado Aprobado Front aSchematic Diagram of Dinamic Focus Unit F7271, 00 Version Realizado Veri Module Digital Schematic Diagram Schematic Diagram of Power Supply Unit F7305, 00 Version Sharp Stereo LED Flashing Codes Video Processor Block DiagramBlock Diagram 72GF-66E Integrated Circuits Parts DescriptionPicture Tube Mother Unit TunerTransformers Packaged CircuitsCoils Ceramic FiltersCeram C 5PF 50V 2125SMD Ceram C 1UF 16V 2125SMDUVZ2C2R2MEH1TA Nichicon Resistors Ceram C 220PF 2KVCeram C DE1410 E332M-KX Wound RES 47KOHM 5% 5W MET Film R 1 OHM 5% 2WMET OX RES 1KOHM 5% 1W SET MET OX R 3,3KOHM 5% 3W LWMiscellaneous Parts TRC Unit Integrated Circuits Digital Module Unit Integrated Circuits Crystal 20.25 HMZ Zener Diode TZMC24 TFK SMDZener Diode TZMC3V3 TFK SMD Crystal 5MHZ AcalAudio Amplifier Integrated Circuits Pwbdigital Module VPC RGBIC TDA7481 Thomson Frontal A/V Unit Coils Line Filter Unit CoilsCabinet Parts 1.2 1.3 1.5 1.6 Recycled Paper