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
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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KP-FX43M31/M61/M91
KP-FX53M31/M61/M91
KP-FX53M31/M61/M91
RM-998
SECTION 2
DISASSEMBLY
2-1. REAR COVER REMOVAL
(1) KP-FX43
(2) KP-FX53
2-2. MAIN BRACKET REMOVAL
2-3. SERVICE POSITION
2
COVERS
Cut them off with a plier or the like from
chassis assembly in case of checking
printed circuit boards.
After checking, turn over the covers and
secure them with screws.
(screws 7-685-648-79 -BVTP 3X12)
chassis assembly in case of checking
printed circuit boards.
After checking, turn over the covers and
secure them with screws.
(screws 7-685-648-79 -BVTP 3X12)
1
Eleven screws
(Hexagon head)
2
Rear board
1
Eleven screws
(Hexagon head)
2
Rear board
3
Main bracket section
1
Optical shield
2
Two screws
(tapping screw
hexagon head)
1
Main bracket section
2
Eight screws
(BVTP 3X12)
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KP-FX43M31/M61/M91
KP-FX53M31/M61/M91
KP-FX53M31/M61/M91
RM-998
2-4. FRONT PANEL REMOVAL
(1) KP-FX43
(2) KP-FX53
3
Two screws
(tapping screw
hexagon head)
hexagon head)
1
Three screws
(BVTP 4x16)
6
Front panel (43) assy
1
Three screws
(BVTP 4X16)
3
Two screws
(tapping screw
hexagon head)
hexagon head)
2
Three screws
(tapping screw
hexagon head)
hexagon head)
5
Side panel (43R) assy
2
Three screws
(tapping screw
hexagon head)
hexagon head)
4
Side panel (43L) assy
3
Two screws
(tapping screw
hexagon head)
hexagon head)
2
Three screws
(tapping screw
hexagon head)
hexagon head)
1
Three screws
(BVTP 4x16)
1
three screws
(BVTP 4x16)
3
Two screws
(tapping screw
hexagon head)
hexagon head)
2
Three screws
(tapping screw
hexagon head)
hexagon head)
5
Side pane (53R) assy
6
Front panel (43) assy
4
Side pane (53L) assy
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