Sony KP-FX43M31 / KP-FX43M61 / KP-FX43M91 / KP-FX53M31 / KP-FX53M61 / KP-FX53M91 Service Manual ▷ View online
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KP-FX43M31/M61/M91
KP-FX53M31/M61/M91
KP-FX53M31/M61/M91
RM-998
• Power does not come on.
• No power is supplied to the PJ.
• AC power supply is faulty.
• No power is supplied to the PJ.
• AC power supply is faulty.
• Power does not come on.
• Load on power line is shorted.
• Load on power line is shorted.
• +135V is too high.
• Vertical deflection pulse is
stopped.
• Vertical size is too small.
• Vertical deflection stopped.
• Vertical deflection stopped.
• No raster is generated.
• CRT cathode current detection
• CRT cathode current detection
reference pulse output is small.
• Abnormal High voltage.
• Abnormal H.drive.
• +5v down.
• Abnormal H.drive.
• +5v down.
• There is picture but speaker does
not release sound.
• Power is shut down shortly, after
this return back to normal.
• Detect Micro latch up.
SECTION 1
SELF DIAGNOSIS FUNCTION
The unit in this manual contain a self-diagnostic function. If any error occurs, the STANDBY/TIMER lamp will automatically
begin to flash.
The number of times the lamp flashes translates to a probable source of the problem. A definition of the STANDBY/TIMER
lamp flash 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.
1-1. DIAGNOSTIC TEST INDICATORS
When any error occurs, the STANDBY/TIMER lamp will flash a set number of times to indicate the possible cause of the
problem. If there is more than one error, the lamp will identify the first of the problem areas.
Result for all of the following diagnostic items are displayed on screen. No error has occurred if the screen displays a “0”.
002:000 or
002:001 ~ 255
003:000 or
003:001 ~ 255
004:000 or
004:001 ~ 255
005:000 or
005:001 ~ 255
006:000 or
006:001 ~ 255
007:000 or
007:001 ~ 255
101:000 or
101:001 ~ 255
No. of times
STANDBY/TIMER
lamp flashes
Detected Symptoms
Diagnostic
Item
Description
• Power does not
turn on
• +B overcurrent
(OCP)
• +B overvoltage
(OVP)
• Vertical deflection
failure
• White balance
failure
(no PICTURE)
(no PICTURE)
•Horizontal deflection
failure or +5v down
or High Voltage
failure
or High Voltage
failure
• Audio Protection
• Micro reset
Self-diagnostic
display/
Diagnostic result
Probable Cause Location
Does not light
2 times
3 times
4 times
5 times
6 times
7 times
• Power cord is not plugged in.
• Fuse (F6701) is burned out.
• Fuse (F6701) is burned out.
(G board)
• H. OUT Q8024 is shorted.
• H. LIN Q8027 is shorted.
• H. LIN Q8027 is shorted.
(D board)
• HV OUT Q8043 is shorted.
• PH6001 faulty.
• +19V is not supplied.
• PH6001 faulty.
• +19V is not supplied.
(G board)
• V. OUT IC8003 faulty.
(D board)
• G2 is improperly adjusted.
(Note 1)
• CRT problem.
• Video OUT IC9101 (CR
• Video OUT IC9101 (CR
board), IC9201 (CG board),
IC9001 (CB board) are faulty.
IC9001 (CB board) are faulty.
• IC8306 (J board) and IC4300
(E board) are faulty.
• No connection E board to CR
board.
• IC6502 (G board) faulty.
• HV Circuit failure.
• HV Circuit failure.
• Power supply fails.
• IC1203,1204 (A board) faulty.
• IC1203,1204 (A board) faulty.
•Discharge CRT
(CR, CG, CB boards)
• Static discharge
• External noise
• External noise
Note 1 : Refer to screen (G2) adjustment in section 3-2 of this manual.
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KP-FX43M31/M61/M91
KP-FX53M31/M61/M91
KP-FX53M31/M61/M91
RM-998
1-2. DISPLAY OF STANDBY/TIMER LIGHT FLASH COUNT
1-3. STOPPING THE STANDBY/TIMER FLASH
Turn off the power switch on the TV main unit or unplug the power cord from the outlet to stop the STANDBY/TIMER lamp from
flashing.
Diagnostic Item
Flash Count *
+B overcurrent
2 times
+B overvoltage
3 times
V deflection stop
4 times
White balance failure
5 times
High voltage protector
6 times
Audio Protection
7 times
* One flash count is not used for self-diagnostic.
STANDBY/TIMER
lamp
Lamp ON
0.3 sec.
0.3 sec.
Lamp OFF
0.3 sec.
0.3 sec.
Lamp OFF
3 sec.
2 times
3 times
5 times
6 times
4 times
7 times
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KP-FX43M31/M61/M91
KP-FX53M31/M61/M91
KP-FX53M31/M61/M91
RM-998
1-4. SELF-DIAGNOSTIC SCREEN DISPLAY
For errors with symptoms such as “power sometimes shuts off” or “screen sometimes goes out” that cannot be confirmed, it is
possible to bring up past occurrences of failure for confirmation on the screen:
[To Bring Up Screen Test]
In standby mode, press buttons on the remote commander sequentially in rapid succession as shown below:
Self-Diagnosis screen display
1-5. HANDLING OF SELF-DIAGNOSTIC SCREEN DISPLAY
5
(DIGIT 5)
(VOLUME –)
(POWER)
ON SCREEN
DISPLAY
( )
*
* : Note that this differs from entering the service mode (volume +)
Since the diagnostic results displayed on the screen are not automatically cleared, always check the self-diagnostic screen
SELF DIAGNOSTIC
002:000
003:000
004:000
005:001
006:002
003:000
004:000
005:001
006:002
007:000
101:000
101:000
Numeral “0” means that no fault has been detected.
Numeral “1” means a fault has been detected.
Numeral “2” means two faults have been detected.
during repairs. When you have completed the repairs, clear the result display to “0”.
Unless the result display is cleared to “0”, the self-diagnostic function will not be able to detect subsequent faults after comple-
tion of the repairs.
[Clearing the result display]
To clear the result display to “0”, press button on the remote commander sequentially as shown below when the diagnostic
screen is being displayed.
[Quitting Self-diagnostic screen]
To quit the entire self-diagnostic screen, turn off the power switch on the remote commander or the main unit.
Press “
8
” button
(It will indicate “CLEAR” on the screen.)
Press “
-
” button
(The “CLEAR” display change to red color.)
,
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KP-FX43M31/M61/M91
KP-FX53M31/M61/M91
KP-FX53M31/M61/M91
RM-998
1-6. SELF-DIAGNOSTIC CIRCUIT
+B overcurrent (OCP)
Occurs when an overcurrent on the +B (135 V) line is detected by
Q6504.
Then the voltage to pin 5 of IC001 goes UP. The unit will automatically
turn off.
+B overvoltage (OVP)
Occurs when an overvoltage on the +B (135 V) line is detected by
IC6502.
Then the voltage to pin 8 of IC001 goes UP. The unit will automatically
turn off.
Vertical deflection failure
Occurs when an absence of the vertical deflection pulse is detected by
Q8001 and D8001. Shut down the power supply.
White balance failure
If the RGB levels do not balance or become low level within 5 seconds.
This error will be detected by IC4300.
TV will stay on, but there will be no picture.
High voltage or Horizontal Deflection Protect
Occurs when an overvoltage of horizontal pulse is detected by D8038
and IC8006.
If the voltage of pin 1 of IC8006 goes to High, the voltage to pin 57 of
IC4300go to UP. The unit will automatically turn off.
Audio Protector
If the Audio out lines become DC.This error will be detected by Q1211,
Q1209 and Q1210.
The unit will automatically turn off.
IC4300
Y/C JUNGLE
CXA2170Q
CXP961048-006Q
24 IKIN
From CRT (IK)
From G board
From IC1203,1204
(A board)
To H1 board
57 XRAY
From IC8005,8006
(D board)
56 V PROT
From Q8001
(D board)
IC001
SYSTEM
IC003
MEMORY
5 OCP
OCP
8 OVP
OVP
LED1 22
SPPROT
100
H
V
SDA 52
13 SDA0
SDA1
SDA
15
5
A board
E board
Q1209-1211
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