KP-43T70C/53SV70C/61SV70C

RM-Y906 RM-Y906 RM-Y906

6. Self-diagnosis function operation

OCP

Low B and +B line detect DET SHORT, and shut-down POWER ON RELAY.

 

Reset by turning power on/off.

 

In case of +B is loaded approx. 1.3A or more, microcomputer detects it via IC651.

OVP

In case of +B becomes approx. 150V or more, POWER ON RELAY shuts down and microcomputer detects it via IC651.

 

Reset by turning power on/off just the same as OCP.

V Stop

In case of microcomputer detects 2 seconds or more interval of V Pulse, Reference Pulse turns off by turning off the picture

 

signal in YC Jungle IC (IC206).

 

After the picture signal turns off, V Pulse is regenerated 2 seconds or more, the picture signal turns on.

AKB

IK detection. Makes LED blinking in case of microcomputer doesn’t detect IK returns of IC206 CXA2147Q 30 seconds or more.

H Stop

In case of HV becomes 33kV or more, IC502 detects it and shut-down H Drive Pulse.

 

Microcomputer receives H Stop data from IC206 and makes LED blinking.

Audio

In case of DC component overlaps the output of Audio Amp., microcomputer detects it and makes LED blinking.

 

Microcomputer forces to shut down the power.

Self-diagnosis block diagram

 

 

 

 

D1201

 

 

 

 

 

 

 

TIMER/STANDBY

 

 

 

 

 

 

 

 

 

 

Q006

 

 

 

 

55

 

5. AKB

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

6. H STOP

 

 

 

 

8

 

IC002

49

 

3

IC206

43

 

 

 

CXA2147

35

6. HV STOP

 

μProcessor

47

 

4

 

 

YCJ

34

 

 

 

 

50

BUS

 

IC1502

 

 

 

 

 

 

20

21

22

48

 

 

 

 

HV Detector

 

 

 

27

 

 

 

 

 

IC064

 

 

 

 

 

 

 

EEPROM

 

 

 

 

 

 

 

 

 

 

 

IC1509

 

 

 

 

 

 

 

 

V Drive

 

 

 

 

 

 

 

 

 

 

Q1505

 

 

 

 

5. AKB

 

 

 

V Pulse Buffer

 

 

 

 

 

 

 

 

 

 

 

IC406

 

 

 

C Board

 

 

 

Audio AMP

 

 

 

 

 

 

Audio

 

DC Detect

 

 

 

 

 

 

 

 

 

3. OVP

 

IC651

 

OVP DETECT

 

 

 

 

 

 

 

 

 

 

2. OCP

OVP Buffer

 

 

 

 

 

OCP Buffer

 

OCP DETECT

 

 

 

 

 

 

 

 

4. V.STOP (V Pulse)

– 5 –

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Image 5
Sony KP-43T70C, KP-61SV70C Self-diagnosis function operation, Self-diagnosis block diagram, OVP Detect, OCP Detect