Sony KP-51WS500 / KP-57WS500 / KP-65WS500 Service Manual ▷ View online
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KP-51WS500/57WS500/65WS500
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 IC5005.
OVP
In case of +B becomes approx. 150V or more, POWER ON RELAY shuts down and microcomputer detects it via IC5005.
Reset by turning power on/off just the same as OCP.
Low B
Occurs when set +5V is out
V Stop
In the case of the V Drive disappearing, Q8001
Q8001 detects it and shuts-down the POWER ON RELAY. The microcomputer detects it and
causes the LED to blink.
AKB
IK detection. Makes LED blink when microcomputer doesn’t detect IK, returns of IC309 (CXA2150AQ) 20 seconds or more.
H Stop
In case H DRIVE disappears, Q378
Q378 detects it and shuts-down POWER ON RELAY.
Microcomputer receives H Stop data from Q378
Q378 and makes the LED blink.
HV Stop In case HV becomes 33kV or more, IC8006 detects it and shuts-down POWER ON RELAY.
The microcomputer makes the LED blink.
Audio
In case of DC component overlaps the output of Audio Amp., the microcomputer detects it and shuts-down POWER ON RELAY.
The microcomputer makes the LED blink.
Self-Diagnosis Block Diagram
49
53
43
24
45
44
31
28
29
28
29
25
58
35
34
5. AKB
5. AKB
4. V STOP
3. OVP
2. OCP
6. LOW B
8. HV.STOP
9. Audio
IC704
MAIN-CPU
IC309
CXA2150AQ
Y/C JUNGLE
D9101
TIMER/STANDBY
R765
IC702
EEPROM
IC703
EEPROM
Q714
+5V DETECT
Q378
H PULSE
Detector
IC8006
HV Detector
Q8001
V Pulse Detector
IC5005
OVP Buffer
OCP Buffer
C Board
DC Detect
IC8003
V Drive
V Drive
IC708
6. H STOP
BUS
26
30
OVP DETECT
OCP DETECT
Audio AMP
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KP-51WS500/57WS500/65WS500
1-1. REAR BOARD REMOVAL
1-2. CHASSIS ASSEMBLY REMOVAL
SECTION 1: DISASSEMBLY
1-3. SERVICE POSITION
Nine Screws, dome washer
HEX tap 4 x 20
HEX tap 4 x 20
Rear board
2
1
Three screws,
dome washer
HEX tap 4 x 20
dome washer
HEX tap 4 x 20
Chassis assy
2
1
From V board CN9001.
(The extension cable is not
supplied because of the
countermeasure for radiation.)
supplied because of the
countermeasure for radiation.)
D board
CN17, 18, and 19
A board
Covers
Remove covers from chassis assembly
with pliers when checking printed circuit boards.
After checking, turn the covers over
and re-secure them with the screws.
Remove covers from chassis assembly
with pliers when checking printed circuit boards.
After checking, turn the covers over
and re-secure them with the screws.
Screws
(+BVTP 3x12)
(+BVTP 3x12)
Chassis assembly
Disconnect CN17, 18, and 19
on the A board.
on the A board.
1
2
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KP-51WS500/57WS500/65WS500
1-4. H2 BOARD REMOVAL
1-5. H1 BOARD REMOVAL
Screw, dome washer
HEX tap 4x20
Screw, dome washer
HEX tap 4x20
Six screws
(+BVTP 4x12)
Cap, speaker grille
Cap, speaker grille
H2 board
Button, multi
2
1
2
1
5
4
3
Two screws
(+BVTP 4x12)
Screw
(+BVTP 3x12)
H1 board
Button, power
Bracket H1
Screw
(+BVTP 4x12)
Guide, LED
7
6
2
1
4
3
5
1-6. H3 BOARD REMOVAL
Screws
(+BVTP 4x12)
Holder, front teminal
Bracket, H3
Screw
(+BVTP 3x12)
Two screws
(+BVTP 3x12)
Door, front terminal
H3 board
2
1
4
7
6
5
3
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KP-51WS500/57WS500/65WS500
1-7. MIRROR COVER REMOVAL
1-8. BEZNET ASSEMBLY REMOVAL
Mirror cover
Twenty three screws,
dome washer HEX tap 4x20
1
2
Beznet assy
Screws,
dome washer HEX tap 4x20
Screws,
dome washer HEX tap 4x20
2
3
1
1-9. S BOARD REMOVAL
L screen holder
Claws
S board
Sensor
bracket (B)
bracket (B)
Two screws
(+BVTP 4x12)
Four screws
(+BVTP 4x12)
Two screws
(+BVTP 4x12)
Sensor
bracket (A)
bracket (A)
7
6
5
3
1
2
4
1-10. AD BOARD AND B BOARD REMOVAL
B board
AD board
Main bracket
1
1
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