Sony KP-53HS10 Service Manual page 6

KP-53HS10/61HS10
RM-Y902 RM-Y902
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. 1.5A or more, microcomputer detects it via IC6102.
OVP In case of +B becomes approx. 150V or more, POWER ON RELAY shuts down and microcomputer detects it via IC6102.
Reset by turning power on/off just the same as OCP.
V Stop In case of V Drive disappeared, Q5005 detecs it and shut-down POWER ON RELAY. Microcomputer detects it and makes LED
blinking.
AKB IK detection. Makes LED blinking in case of microcomputer doesn't detect IK returns of IC511 (CXA2101AQ) 30 seconds or
more.
H Stop In case of H DRIVE is disappeared, Q5006 detects it and shut-down POWER ON RELAY shuts down.
Microcomputer receives H Stop data from Q5006 and makes LED blinking.
HV Stop In case of HV becomes 33KV or more. IC8006 and IC8010 detect it and shut-down
POWER ON RELAY. Microcomputer makes LED blinking.
Audio In case of DC component overlaps the output of Audio Amp., POWER ON RELAY shuts down.
Microcomputer detects it and makes LED blinking.
Self-diagnosis block diagram
3
4
5
TIMER/STANDBY
53
IC1008
MAIN-CPU
2. OVP
3. OCP
4. V.STOP
IC1007
6. H.STOP
BUS
EEPROM
7. HV STOP
8. AUDIO
50 48
IC1009
OSD-CPU
13 7 6
8. Audio
3. OVP
2. OCP
4. V.STOP (V Pulse)
6. H.STOP
7. HV.STOP
D3102
R1802
5. AKB
IC511
49 55
CXA2101AQ
47 56
MCP
50
BUS
48
27
IC512
CXD2018Q
VDSP
IC5004
V Drive
5. AKB
IC2002
Audio AMP
DC Detect
IC6102
OVP DETECT
OVP Buffer
OCP Buffer
OCP DETECT
– 6 –
33
6. H STOP
28
Q5006
IC8006,8010
H PULSE
HV Detector
Detector
22
16
Q5005
V Pulse Detector
C Board