Sony KDL-55X4500 Service Manual ▷ View online
KDL-55X4500 (CH) 5
SAFETY CHECK-OUT
After correcting the original service problem, perform the
following safety checks before releasing the set to the customer:
following safety checks before releasing the set to the customer:
1. Check the area of your repair for unsoldered or poorly
soldered connections. Check the entire board surface for
solder splashes and bridges.
solder splashes and bridges.
2. Check the interboard wiring to ensure that no wires are
“pinched” or touching high-wattage resistors.
3. Check that all control knobs, shields, covers, ground straps,
and mounting hardware have been replaced. Be absolutely
certain that you have replaced all the insulators.
certain that you have replaced all the insulators.
4. Look for unauthorized replacement parts, particularly
transistors, that were installed during a previous repair. Point
them out to the customer and recommend their replacement.
them out to the customer and recommend their replacement.
5. Look for parts which, though functioning, show obvious
signs of deterioration. Point them out to the customer and
recommend their replacement.
recommend their replacement.
6. Check the line cords for cracks and abrasion. Recommend
the replacement of any such line cord to the customer.
7. Check the antenna terminals, metal trim, “metallized”
knobs, screws, and all other exposed metal parts for AC
leakage. Check leakage as described below.
leakage. Check leakage as described below.
Leakage Test
The AC leakage from any exposed metal part to earth ground
and from all exposed metal parts to any exposed metal part
having a return to chassis, must not exceed 0.5 mA (500
microamperes).
Leakage current can be measured by any one of three methods.
and from all exposed metal parts to any exposed metal part
having a return to chassis, must not exceed 0.5 mA (500
microamperes).
Leakage current can be measured by any one of three methods.
1. A commercial leakage tester, such as the Simpson 229 or
RCA WT-540A. Follow the manufacturers’ instructions to
use these instructions.
use these instructions.
2. A battery-operated AC milliampmeter. The Data Precision
245 digital multimeter is suitable for this job.
3. Measuring the voltage drop across a resistor by means of a
VOM or battery-operated AC voltmeter. The “limit”
indication is 0.75 V, so analog meters must have an accurate
low voltage scale.
The Simpson’s 250 and Sanwa SH-63TRD are examples of
passive VOMs that are suitable. Nearly all battery-operated
digital multimeters that have a 2 VAC range are suitable (see
Figure A).
indication is 0.75 V, so analog meters must have an accurate
low voltage scale.
The Simpson’s 250 and Sanwa SH-63TRD are examples of
passive VOMs that are suitable. Nearly all battery-operated
digital multimeters that have a 2 VAC range are suitable (see
Figure A).
How to Find a Good Earth Ground
A cold-water pipe is a guaranteed earth ground; the cover-plate
retaining screw on most AC outlet boxes is also at earth ground.
If the retaining screw is to be used as your earth ground, verify
that it is at ground by measuring the resistance between it and a
cold-water pipe with an ohmmeter. The reading should be zero
ohms.
retaining screw on most AC outlet boxes is also at earth ground.
If the retaining screw is to be used as your earth ground, verify
that it is at ground by measuring the resistance between it and a
cold-water pipe with an ohmmeter. The reading should be zero
ohms.
If a cold-water pipe is not accessible, connect a 60- to 100-watt
trouble- light (not a neon lamp) between the hot side of the
receptacle and the retaining screw. Try both slots, if necessary,
to locate the hot side on the line; the lamp should light at normal
brilliance if the screw is at ground potential (see Figure B).
trouble- light (not a neon lamp) between the hot side of the
receptacle and the retaining screw. Try both slots, if necessary,
to locate the hot side on the line; the lamp should light at normal
brilliance if the screw is at ground potential (see Figure B).
To Exposed Metal
Parts on Set
Parts on Set
0.15
µ
F
Earth Ground
AC
Voltmeter
Voltmeter
o
o
(0.75V)
Trouble Light
AC Outlet Box
Ohmmeter
Cold-water Pipe
FigureA. Using an AC voltmeter to check AC leakage.
Figure B. Checking for earth ground.
KDL-55X4500 (CH) 6
SELF DIAGNOSIS FUNCTION
The units in this manual contain a self-diagnostic function. If an error occurs, the STANDBY LED will automatically begin to flash.
The number of times the LED flashes translates to a probable source of the problem.
A definition of the STANDBY LED 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.
The number of times the LED flashes translates to a probable source of the problem.
A definition of the STANDBY LED 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.
DIAGNOSTIC TEST INDICATORS
When an error occurs, the STANDBY LED will flash 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 first of the problem areas.
Result for all of the following diagnostic items are displayed on screen.
If the screen displays a “0”, no error has occurred .
If there is more than one error, the LED will identify the first of the problem areas.
Result for all of the following diagnostic items are displayed on screen.
If the screen displays a “0”, no error has occurred .
Number of times STANDBY
Monitoring Items
Detection
LED (Red) flashes
(Screen Display)
2 times
POW_ERR1
AAS Board IC2104
79pin: i_lb_err (AD port) < PW_ERR_LEV (Threshold Value)
and
138pin: i_ac_off_det: HIGH
79pin: i_lb_err (AD port) < PW_ERR_LEV (Threshold Value)
and
138pin: i_ac_off_det: HIGH
5 times
T_CON
FBA Board IC
5501
1
128Pin: TCON_RDY: Low
or
2
Detected Error of Cayenne Register
6 times
BACKLITE
FBA Board IC
5501
78Pin: INV_FAIL: LOW
7 times
PANLTEMP
FBA Board IC
5501
IIC_ch2 setting value (BEM data)
8 times
AUD_PROT
AAS Board IC2104
19pin: i_au_prot: Low
19pin: i_au_prot: Low
9 times
FAN_ERR
FBA Board IC
5501
pin154: FAN_ERR: High
13 times
BALANCER
FBA Board IC
5501
1
163pin: BALANCER_ERR: LOW
or
2
SPI_ERR_CNT (SetSREG) >= SPI_ERR_LIM (FactSREG)
DISPLAY OF STANDBY LIGHT FLASH COUNT
STOPPING THE STANDBY FLASH
Turn off the power switch on the TV main unit or unplug the power cord from the outlet to stop the STANDBY LED for flashing.
STANDBY
LED
2 sec
KDL-55X4500 (CH) 7
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:
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:
Since the diagnostic results displayed on the screen are not automatically cleared, always check the self-diagnostic screen
After you have completed the repairs, clear the result display to “0”.
After you have completed the repairs, clear the result display to “0”.
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.
<Delection of Error Count and Error History>
Press “
8
” button
,
Press “
-
” button
<Delection of Panel Operation Time>
Press “
7
” button
,
Press “
-
” button
Quitting Self-diagnostic screen
To quit the entire self-diagnostic screen, turn off the power switch on the remote commander or the main unit.
002 POW_ERR1
005 T_CON
006 BACKLITE
007 PANL TEMP
008 AUD_PROT
009 FAN_ERR
006 BACKLITE
007 PANL TEMP
008 AUD_PROT
009 FAN_ERR
013 BALANCER
SELF CHECK
12345 - 00333 - 06789
0501210811 0412311234 0311111825 00
0000000000 0000000000 0000000000 00
0000000000 0000000000 0000000000 00
0000000000 0000000000 0000000000 00
0000000000 0000000000 0000000000 00
0000000000 0000000000 0000000000 00
0000000000 0000000000 0000000000 00
0000000000 0000000000 0000000000 00
0000000000 0000000000 0000000000 00
0000000000 0000000000 0000000000 00
0000000000 0000000000 0000000000 00
Item name
The last failure time
Falure time before last
Last failure time beforehand
Falure time before last
Last failure time beforehand
Error count (00-99)
Frequency of LED blinking.
Total operation time by hour (max 99999)
Boot count (max 99999)
Panel operation time by hour (max 99999)
[ SELF-DIAGNOSTIC SCREEN DISPLAY ]
KDL-55X4500 (CH) 8
TABLE OF CONTENTS
SPECIFICATIONS .................................................... 2
SAFETY CHECK-OUT ............................................. 5
SELF DIAGNOSIS FUNCTION ................................ 6
TABLE OF CONTENTS ........................................... 8
1. DISASSEMBLY ............................................... 1-1
1-1.
REAR COVER REMOVAL .................................. 1-1
1-2.
STAND ASSY REMOVAL ................................... 1-1
1-3.
H1VM BOARD REMOVAL ................................. 1-2
1-4.
PANEL FIN REMOVAL ....................................... 1-2
1-5.
FAN REMOVAL ................................................... 1-3
1-6.
CB1 BOARD REMOVAL ..................................... 1-3
1-7.
SP BOX (WOOFER) ASSY REMOVAL ............. 1-4
1-8.
UNDER COVER, SIDE JACK BRACKET AND
CARD BRACKET REMOVAL ............................ 1-4
1-9.
G6 BOARD REMOVAL ....................................... 1-5
1-10. G7 BOARD REMOVAL ....................................... 1-5
1-11. GL BOARD REMOVAL ....................................... 1-6
1-12. K2 BOARD REMOVAL ....................................... 1-6
1-13. FB SHIELD ASSY REMOVAL ............................ 1-7
1-14. ACW AND FBA BOARDS REMOVAL .............. 1-7
1-15. AC INLET AND RF MODULE REMOVAL ....... 1-8
1-16. SPEAKER BOX ASSY REMOVAL .................... 1-8
1-17. LC PANEL, H3VM BOARD, H4 BOARD AND
TOUCH SENSOR MODULE REMOVAL ........... 1-9
2. TROUBLESHOOTING .................................... 2-1
2-1.
TRIAGE CHART ................................................... 2-1
2-2.
FLOW CHART ...................................................... 2-2
2-2-1.
NO POWER (Chart B) ..................................... 2-3
2-2-2.
SET REBOOTS ............................................... 2-4
2-2-3.
SELF DIAGNOSIS .......................................... 2-4
2-2-3-1. RED LED BLINKS TABLE ..................... 2-4
2-2-3-2. RED LED BLINKS (Chart C) ................... 2-5
2-2-4.
AUDIO PROBLEM (Chart D) ........................ 2-9
2-2-5.
VIDEO PROBLOM (Chart E) ....................... 2-10
2-2-6.
NO PICTURE ................................................ 2-11
3. DIAGRAMS ..................................................... 3-1
3-1.
BLOCK DIAGRAM .............................................. 3-1
3-2.
CIRCUIT BOARDS LOCATION ......................... 3-2
4. EXPLODED VIEWS ........................................ 4-1
4-1.
REAR COVER AND STAND ASSY ................... 4-2
4-2.
H1VM BOARD AND UNDER COVER .............. 4-3
4-3.
FAN AND WOOFER SPEAKER ......................... 4-4
4-4.
G6, G7, GL AND K2 BOARDS ............................ 4-5
4-5.
ACW, CB1 AND FBA BOARDS ......................... 4-6
4-6.
SPEAKER AND GRILLE ..................................... 4-7
4-7.
LCD PANEL .......................................................... 4-8
4-8.
CONNECTOR ASSY ............................................ 4-9
4-9.
PACKING MATERIALS .................................... 4-10
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