Sony KP-51WS500 / KP-57WS500 / KP-65WS500 Service Manual ▷ View online
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KP-51WS500/57WS500/65WS500
SELF-DIAGNOSTIC FUNCTION
The units in this manual contain a self-diagnostic function. If an error occurs, the STANDBY/TIMER LED will automatically begin to fl ash. The number
of times the LED fl ashes translates to a probable source of the problem. A defi nition of the STANDBY/TIMER LED fl ash indicators is listed in the
instruction manual for the user’s knowledge and reference. If an error symptom cannot be reproduced, the Remote Commander can be used to review
the failure occurrence data stored in memory to reveal past problems and how often these problems occur.
of times the LED fl ashes translates to a probable source of the problem. A defi nition of the STANDBY/TIMER LED fl ash indicators is listed in the
instruction manual for the user’s knowledge and reference. If an error symptom cannot be reproduced, the Remote Commander can be used to review
the failure occurrence data stored in memory to reveal past problems and how often these problems occur.
Diagnostic Test Indicators
When an error occurs, the STANDBY/TIMER LED will fl ash a set number of times to indicate the possible cause of the problem. If there is more than
one error, the LED will identify the fi rst of the problem areas.
When an error occurs, the STANDBY/TIMER LED will fl ash a set number of times to indicate the possible cause of the problem. If there is more than
one error, the LED will identify the fi rst of the problem areas.
Results for all of the following diagnostic items are displayed on screen. If the screen displays a “0”, no error has occurred.
Diagnostic Item
No. of times
STAND BY /
STAND BY /
TIMER
lamp flashes
Probable Cause Location
Detected Symptoms
Power does not turn on
Does not light
•
Power cord is not plugged in.
•
Fuse is burned out (F6001). (G Board)
•
Power does not come on.
•
No power is supplied to the TV.
•
AC Power supply is faulty.
+B overcurrent (OCP)*
2 times
•
H.OUT (Q8024) is shorted. (D Board)
•
+B PWM (Q8035, Q8038) is shorted.
(D Board)
(D Board)
•
Power does not come on.
•
Load on power line shorted.
+B overvoltage (OVP)
3 times
•
IC501 is faulty. (G Board)
•
IC5002 is faulty. (G Board)
•
Has entered standby mode.
Vertical deflection stopped
4 times
•
±
15V is not supplied. (D Board)
•
IC8003 is faulty. (A Board)
•
Has entered standby state after
horizontal raster.
horizontal raster.
•
Vertical deflection pulse is
stopped.
stopped.
•
Power line is shorted, or
power supply is stopped.
power supply is stopped.
White Balance Failure
(Not Balanced)
(Not Balanced)
5 times
•
Video OUT (IC7101, IC7201, IC7301)
is faulty. (CR, CG, CB Board
is faulty. (CR, CG, CB Board
s)
•
CRT drive (IC309) is faulty. (A Board)
•
Screen (G2) is improperly adjusted. **
•
No raster is generated.
•
CRT Cathode current detection
reference pulse output is small.
reference pulse output is small.
Low B OCP/OVP
(Overcurrent/Overvoltage) ***
(Overcurrent/Overvoltage) ***
6 times
•
+5 line is overloaded. (A, B Boards)
•
+5 line is shorted. (A, B Boards)
•
No picture
Horizontal deflection stopped
7 times
•
Q8035, Q8038 is shorted. (D Board)
High-voltage error
8 times
•
T8005 is faulty. (D Board)
Audio error
9 times
• ±
19V line is shorted. (A, B Boards)
•
IC708 is faulty. (A Board)
•
PS701 or PS702 is opened.
(A Board)
(A Board)
•
No sound
*
Ifa +B overcurrent is detected, stoppage ofthe vertical deflection is detected simultaneously. The symptom that is diagnosed
first by the microcontroller is displayed on the screen.
first by the microcontroller is displayed on the screen.
**
Refer to Screen (G2) Adjustments in Section 2-
2 ofthis manual
***
If TIMER or STAND BY indicator blinks six (6) times, unplug the unit and wait 10 minutes before performing the adjustment.
Self Diagnosis
Supported model
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KP-51WS500/57WS500/65WS500
Display of Standby/Timer LED Flash Count
Lamp OFF :
3.0 seconds
3.0 seconds
Lamp ON : 0.3 seconds
Lamp OFF : 0.3 seconds
* One blink is not used for self-diagnosis.
•
EXAMPLE
<Diagnosis Items> <Number of Blinks>
•
+B overcurrent
2 times
•
+B overvoltage
3 times
•
Vertical deflection stop
4 times
< FRONT PANEL >
TIMER/STAND BY indicator
Release of TIMER STAND BY indicator blinking
The TIMER/STANDBY indicator blinking display is released by turning OFF the power switch on the TV main unit or removing the plug from the
power.
The TIMER/STANDBY indicator blinking display is released by turning OFF the power switch on the TV main unit or removing the plug from the
power.
Self-Diagnosis Screen Displays
In cases of malfunctions where it is not possible to determine the symptom such as when the power goes off occasionally or when the screen
disappears occasionally, there is a screen display on whether the malfunction occurred or not in the past (and whether the detection circuit operated
or not) in order to allow confi rmation.
In cases of malfunctions where it is not possible to determine the symptom such as when the power goes off occasionally or when the screen
disappears occasionally, there is a screen display on whether the malfunction occurred or not in the past (and whether the detection circuit operated
or not) in order to allow confi rmation.
Screen Display Method
Quickly press the remote command button in the following order from the standby state.
Display
Channel 5
Sound Volume*
_
Power ON
*Note that this differs from entering the service mode (sound volume + )
SELF DIAGNOSIS
2 : +B OCP
N/A
3 : +B OVP
N/A
4 : V STOP
0
5 : AKB
1
10 : WDT
24
Numeral "0" means that no fault
was detected.
was detected.
Numeral "1" means a fault was detected
one time or more
one time or more
Self-Diagnosis Screen Display
The results display is not automatically cleared. In case of repairs and after repairs, check the self-diagnosis screen and be sure to return the
results display to “ 0 ”.
The results display is not automatically cleared. In case of repairs and after repairs, check the self-diagnosis screen and be sure to return the
results display to “ 0 ”.
If the results display is not returned to “ 0 ” it will not be possible to judge a new malfunction after completing repairs.
Method of Clearing Results Display
1. Power off (Set to the standby mode.)
2. Display
Channel 5
Sound Volume +
Power ON (Service Mode)
3. Channel 8
ENTER (Test reset = Factory preset condition)
Method of Ending Self Diagnosis Screen
When ending the self-diagnosis screen completely, turn the power switch OFF on the remote commander or the main unit.
When ending the self-diagnosis screen completely, turn the power switch OFF on the remote commander or the main unit.
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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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