Sony KV-G142M service manual Section Self Diagnosis Function, Nonvolatile, Memory

Page 16

KV-G14M2

RM-869

SECTION 4

SELF DIAGNOSIS FUNCTION

If no acknowledgement is returned from a device which is turned "ON", the device has a problem.

In this case, one of the LED's responding to the problem device will flicker a defined number of times.

Flickering is operated by lighting the LED's for 60ms each time.

The flickering frequency responding to each failed device is shown below.

Board name	A Board	A Board

Ref. No.	IC003	IC300

	NONVOLATILE	Y/C JUNGLE
Device	MEMORY	(TDA8374A)
	(ST24C04FB6)

Flickering Frequency	1	3

All the devices are checked one after another from the left of the table.

If an error is found, the responding LED will start flickering.

So, if more than 1 device have failed, only the one on the left side will flicker.

– 16 –

Image 16

Contents Trinitron Color TV Specifications Channel coverageTable of Contents Progr + Connections Presetting channels Watching the TV Adjusting the picture Board Removal Service Position Section DisassemblyRear Cover Removal F1 Board Removal Terminal Board Bracket Removal Replacement of PartsDemagnetization Coil Removal ∙ Removal of ANODE-CAP ∙ Removing Procedures Picture Tube RemovalSection SET-UP Adjustments Beam LandingConvergence Horizontal and Vertical Static ConvergenceFocus Adjustment Dynamic Convergence Adjustment PreparationG2 Screen and White Balance Adjustments Method of Cancellation from Service ModeNonvolatile Section Self Diagnosis FunctionMemory Section Circuit Adjustments Adjustments with CommanderAdjustment Method Adjustment Item Table OFM Item No VPX Board Adjustment After IC003 Memory Replacement Picture Distortion AdjustmentExploded View SectionChassis Electrical Parts List F35430206Description Diode D1NL20Diode EL1Z Diode GP08DREF.NO CarbonWirewound REF.NO. Part no Description RemarkFusible MetalSwitch Spark GAPGAP, Spark FILTER, Surface Wave TransformerHOLDER, FBT Screw +BVTPCapacitor Ceramic Chip2KV REF.NO. Part no Description3KV PLUG, Connector 6P PLUG, Connector 3PCeramic Chip 1MF FilterJACK, PIN 2P Chip Conductor COIL, VAR, Ferrite HWCTransistor 2SC1623-L5L6 Transistor DTC143TKA-T146220 10W R040 300 Thermistor TRANSFORMER, Line FilterThermistor Positive Tuner SOCKET, CRT Transistor 2SC2611Transistor 2SC2611 Resistor Carbon Variable ResistorBattery COVER, Remote Commander Remote CommanderMANUAL, Instruction Sony Corporation