Sony KV27FV16 service manual Handling of Self-Diagnostic Screen Display

Page 6

KV-27FV16/29FV16/29FV16C/32FS12/32FS16

Handling of Self-Diagnostic Screen Display

Since the diagnostic results displayed on the screen are not automatically cleared, always check the self-diagnostic screen during repairs. When you have completed the repairs, clear the result display to “0”.

Unless the result display is cleared to “0”, the self-diagnostic function will not be able to detect subsequent faults after completion of the repairs.

Clearing the Result Display

To clear the result display to “0”, press buttons on the Remote Commander sequentially when the diagnostic screen is displayed, as shown below:

Channel 8

ENTER

Quitting the Self-Diagnostic Screen

To quit the entire self-diagnostic screen, turn off the power switch on the Remote Commander or the main unit.

Self-Diagnostic Circuit

+B overcurrent (OCP)

Occurs when an overcurrent on the +B (135V) line is detected by pin 33 of IC301 (MA Board). If

 

the voltage of pin 33 of IC301 (MA Board) is less than 1V when V.SYNC is more than seven

 

verticals in a period, the unit will automatically turn off.

I-Prot

Occurs when an absence of the vertical deflection pulse is detected by pin 5 of IC001 (MA

 

Board). Power supply will shut down when waveform interval exceeds 2 seconds.

IK

If the RGB levels* do not balance within 2 seconds after the power is turned on, this error will be

 

detected by IC301 (MA Board). TV will stay on, but there will be no picture.

 

*(Refers to the RGB levels of the AKB detection Ref pulse that detects 1K).

— 6 —

Image 6
Contents Trinitron Color TV Specifications = SRS Sound Retreival SystemTable of Contents SELF-DIAGNOSTIC Function SAFETY-RELATED Component WarningDiagnostic Item Flash Count STANDBY/TIMER LEDHandling of Self-Diagnostic Screen Display Safety CHECK-OUT Leakage TestConnecting Your TV GeneralConnecting Additional Equipment TV, Cable box, and Cable TV and Satellite Receiver Muting PowerFunction SystemTroubleshooting Section Disassembly Chassis Assembly Removal Service PositionRear Cover Removal Picture Tube Removal Anode CAP RemovalBefore Removing Anode CAP Section SET-UP Adjustments Adjustment ProcedureBeam Landing Vertical Static Convergence Dynamic Convergence AdjustmentConvergence Horizontal Static ConvergenceTLH Plate Adjustment Screen-Corner ConvergenceFocus Method of Setting the Service Adjustment Mode White Balance AdjustmentsB+ Voltage Confirmation and Adjustment Section Safety Related AdjustmentsHold-Down Readjustment Preparation Before ConfirmationMultimeter Power SupplyDigital FBTAdjustment Buttons and Indicators Section Circuit AdjustmentsService Adjustment Mode On Electrical Adjustments by Remote CommanderAdjustment Items Function Range Data Ntsc PAL M PAL N VideoAverage Feature ID Map Function Range Data PAL M PAL NMA Board Adjustments Size Adjustment Hsiz Center Adjustment VposCenter Adjustment Hpos KV-27FV16/29FV16/29FV16C/32FS12/32FS16KV-27FV16/29FV16/29FV16C/32FS12/32FS16 KV-27FV16/29FV16/29FV16C/32FS12/32FS16 KV-27FV16/29FV16/29FV16C/32FS12/32FS16 Block Diagram Diagrams ConvergenceAntenna Printed Wiring Boards and Schematic Diagrams Board IC Block DiagramsCircuit Board Locations Power SUPPLY, DEFLECTION, TUNER/IF, AUDIO, MTS Board Locator ListBoard IC Voltage List Board Schematic DiagramBoard Mark * List Board Transistor Voltage ListMA Board Schematic Diagram MA Board Mark * ListMA Board Waveforms MA Board Transistor Voltage List MA Board IC Voltage List MA Board IC Block DiagramsTuning CONTROL, 2ND TUNER, Y/C/J MA Board Locator ListCA Board Mark * List CA Board Schematic DiagramHX Board Schematic Diagram CA Board WaveformsVoltage List Board IC Voltage ListConvergence BC Board Transistor Voltage List BC Board Schematic DiagramBC Board IC Voltage List BC Board WaveformsFront A/V, Menu KEY HA Board Schematic DiagramHB Board Schematic Diagram IR DetectorVA Board MARK* List Audio ProcessorVelocity Modulator PIP, Chroma Decoder Component Side IC3301Section Exploded View SemiconductorsDescription Beznet AssyREF. NO. Part no Description Remark Picture Tube KV-32FS12/32FS16 only DY Y34RSA-XSection Electrical Parts List Capacitor1KV REF.NO Description RemarkDiode PLUG, Connector 11PPLUG, Connector 10P Diode RD9.1EW-T1Jack FuseFerrite Bead Chip ConductorIC Link CoilPhoto Coupler TransistorMetal Oxide CarbonMetal Metal ChipCemented FusibleTransformer SwitchRelay ThermistorConnector FilterCrystal Only Diode Variable ResistorPC Board Resistor PC BoardPLUG, Connector 7P PLUG, Connector 4PHA Mounted PC Board ALL Except KV-32FS12/32FS16 HX Mounted PC Board BoardPLUG, Connector 3P IC NJW1130G-TE2R452 PLUG, Connector 8P PLUG, Connector 9PDiode UDZ-TE-17-5.1B PLUG, Connector 2PALL Except KV-32FS12 Diode MA111-TXL356 1-216-296-91 Short KV-27FV16/29FV16/29FV16C/32FS12/32FS16 R286 VIBRATOR, Crystal OSCILLATOR, CrystalBoard IC TDA8501T Transistor 2SD1292150K Accessories and Packaging Remote CommanderKV-27FV16/29FV16/29FV16C/32FS12/32FS16 KV-27FV16/29FV16/29FV16C/32FS12/32FS16 Sony Corporation