Sony KDL-40NX717 / KDL-46NX717 Service Manual ▷ View online
KDL-40NX717/46NX717
8
SAFETY CHECK-OUT
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.
1. A commercial leakage tester, such as the Simpson 229 or RCA WT-540A.
Follow the manufacturers’ instructions to 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).
HOW TO FIND A GOOD EARTH GROUND
The cover-plate retaining screw on most AC outlet boxes is at earth ground.
Verify the AC outlet box retaining screw ground by connecting 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
AC Outlet Box
Figure B. Checking for earth ground.
KDL-40NX717/46NX717
9
SELF DIAGNOSIS FUNCTIONS
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.
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 the screen displays a “0”, no error has occurred .
Diagnostic Item
Diagnostic Item
Description
Number of times
Standby LED
blinks
Possible Location
RGB_SEN
RGB Sensor ACK Error
NA
NA
MAIN_POWER
Main Power Over Voltage Protection
2
G9A (Power) Board (KDL-40NX717 Only)
G9B (Power) Board (KDL-46NX717 Only)
BUHT Board
DC_ALERT
DC Alert
DTT-WDT
DTT Error
AUD_PROT
Audio Error Detection
BALANCER
Panel Balancer Error
4
BUHT Board
TCON ERR
TCON Error
HFR ERR
HFR Error
P_ID_ERR
Panel ID NVM Error
BACKLITE
Backlight Error
6
BUHT Board
TEMP_ERR
Temperature Error
7
BUHT Board
FAN_ERR
Fan Error (Not Detected; Display Only)
NA
NA
3
5
BUHT Board
G9A (Power) Board (KDL-40NX717 Only)
G9B (Power) Board (KDL-46NX717 Only)
LCD Panel
TCON Control MT Board
BUHT Board
Self Diagnosis
Supported model
KDL-40NX717/46NX717
10
SELF DIAGNOSIS FUNCTIONS
Standby lEd flaSH Count
Ambient Sensor/
(IR) Infrared Receiver
Picture Off /
Timer LED
Standby LED
Power LED
0.5
0.5
3
0.5
0.5
3
KDL-40NX717/46NX717
11
SELF DIAGNOSIS FUNCTIONS
ViEWing tHE SElf CHECk diagnoStiC liSt
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 a failure for confirmation on the Self Check diagnostic screen:
1. TV must be in standby mode. (Power off).
2. Press the following buttons on the Remote Commander within a second of each other:
2. Press the following buttons on the Remote Commander within a second of each other:
DISPLAY
Channel
5
Volume
-
POWER
.
* NOTE: This differs from accessing Service Adjustments Mode (Volume +)
Total operation time by hour (MAX:65535)
Boot count (MAX:65535)
Panel operation time by hour (MAX:65535)
Total operation time by hour (MAX:65535)
Boot count (MAX:65535)
Panel operation time by hour (MAX:65535)
0501210811 0412311234 0311111825 00
-------------- -------------- -------------- 00
-------------- -------------- -------------- 00
-------------- -------------- -------------- 00
-------------- -------------- -------------- 00
-------------- -------------- -------------- 00
002 MAIN_POWE
003 DC_ALERT1
003 DC_ALERT1
003 AUD_PROT
004 BALANCER
005 HFR_ERR
005 P_ID_ERR
12345-00333-06789
12345-00333-06789
-
-
-------------- -------------- -------------- 00
003 DTT_WDT
-------------- -------------- -------------- 00
005 TCON_ERR
-------------- -------------- -------------- 00
-------------- -------------- -------------- 00
-------------- -------------- -------------- 00
-------------- -------------- -------------- 00
-------------- -------------- -------------- 00
006 BACKLITE
007 TEMP_ERR
010 RESERVED
-------------- -------------- -------------- 00
007 FAN_ERR
-------------- -------------- -------------- 00
-------------- -------------- -------------- 00
000 RGB_SEN
011 RESERVED
-------------- -------------- -------------- 00
SELF CHECK
StandBy LED Flash Count
Diagnostic Item
Error history (Most recent time the failure occurred)
Diagnostic Item
Error history (Most recent time the failure occurred)
Error history (Failure time before the last occurrence)
Error history (Failure time before the 2
Error history (Failure time before the 2
nd
to last occurrence)
Error Count (00-99)
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