Sony KDL-50R550A / KDL-60R520A / KDL-60R550A / KDL-70R550A (serv.man2) Service Manual ▷ View online
KDL-50R550A, 60R520A/550A, 70R550A(PA)
9
SELF DIAGNOSIS FUNCTION
DIAGNOSTIC TEST INDICATORS
When an error occurs, the STANDBY LED will flash a set number of times to
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 .
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.
STBY LED
Flash time
Service menu Item
name
(Screen Display)
Diagnostic Item Description
2
MAIN_POWER
Detect power board 12V. (V_DROP_DET)
TUNER_ERR
Not used
AUDIO_PROT
Detect Audio Speaker Error.
AUDIO_PROT
Detect Audio Amp Error.
DC_ALERT1
Detect +3.3V+5V Drop. (V_DROP_DET)
4
BALANCER_ERR
Not used
TCON_ERR
Detect 12V_TCON(12V_TCON_DROP_DET)
PANEL_POWE
Not used
6
BACKLIGHT_ERR
Detect panel backlight ready.
7
TEMP_ERR
Not used
8
-
Not used
9
-
Not used
10
-
Not used
11
-
Not used
12
-
Not used
5
3
DISPLAY OF STANDBY LED FLASH COUNT
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:
KDL-50R550A, 60R520A/550A, 70R550A(PA)
10
SELF CHECK
BACK
<<
002 MAIN_POWER
000
003 TUNER_ERR
000
003 AUDIO_PROT
000
003 DC_ALERT1
000
004 BALANCER_ERR
000
005 TCON_ERR
000
005 PANEL_POWE
000
006 BACKLIGHT_ERR
000
007 TEMP_ERR
000
12345-67891-23456
[Home] Exit
SELF DIAGNOSIS FUNCTION
[SELF DIAGNOSTIC SCREEN DISPLAY]
Error count
Item name
STBY LED flash time
Total operation time by hour
Boot count
Panel operation time by hour
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”.
Clearing the Self Check Diagnostic List
1. Error history and Error count :
Press the Channel 8 => Channel 0 .
2. Panel operation time :
Press the Channel 7 => Channel 0 .
Exiting the Self-diagnostic screen
To exit the Self Diagnostic screen, turn off the power to the TV by pressing the POWER button on the remote or the POWER button on the TV.
KDL-50R550A, 60R520A/550A, 70R550A(PA)
11
• Items with no part number and no description are not stocked because they are seldom required for roution service.
• The construction parts of an assembled part are indicated with a collation number in the remark colum.
• Items marked " * " are not stocked since they are seldom required for routine service. Some delay should be anticipated when ordering these items.
SEC 1. DISASSEMBLY AND PARTS LIST
Note: About the wire dressing, disassembly of rear cover and service position, please refer to “APPENDIX-1”.
KDL-50R550A, 60R520A/550A, 70R550A(PA)
12
1-1. KDL-50R550A
1-1-1. STAND BLOCK
REF. No. PART No.
DESCRIPTION
MARK
1
4-446-625-01
NECK R (L3)
2
4-446-637-01
STAND SHAFT (L3)
3
4-446-624-01
NECK L (L3)
4
1-846-735-11
POWER SUPPLY CORD
AF1
1-846-736-11
POWER SUPPLY CORD
EA4
1-846-737-11
POWER SUPPLY CORD
AU5
5
4-299-530-11
AC COVER
6
4-464-820-21
REAR COVER (50FUGF)
2-580-608-01
SCREW, +PSW M5X16
4-445-507-01
SCREW, +PWH M3X8 W12
4-159-298-21
SCREW, +PSW M4X10
4-443-433-01
SCREW, +PH (M3X6)
Use shape of No.1 driver
7-685-646-79
SCREW +BVTP 3X8 TYPE2 IT-3
2-580-639-01
SCREW, +BVTP 4X12 TYPE2 IT-3
DISASSEMBLY AND PARTS LIST
1-1-2. STAND SHAFT AND NECK
5
4
2
1
3
1-1-3. AC COVER AND REAR COVER
6
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