Sony Bravia KDL-32R420B Operating instructions

REPAIR MANUAL
Self Diagnosis
Supported model
HISTORY INFORMATION FOR THE FOLLOWING MANUAL:
LCD Digital Color TV
9-883-586-01
ITC3 Chassis
Segment: ME
Version Date Subject
1.0 02/20/2014 Original Manual Release Date.
MODEL COMMANDER DESTINATION
KDL-32R420B RM-YD092 US/CND
KDL-40R470B RM-YD092 US/CND
KDL-40R470B

KDL-32R420B/40R470B i
TABLE OF CONTENTS
Cautions and Warnings...................................................................................ii
Section 1 - Specications and Layouts .........................................................1
Specications ................................................................................................1
Checking the Accessories......................................................................................1
Board Layout .................................................................................................2
KDL-32R420B/40R470B........................................................................................2
Wire Dressing................................................................................................3
KDL-32R420B/40R470B........................................................................................3
Section 2 - Troubleshooting ...........................................................................4
Diagnosing the Error .....................................................................................4
Viewing the Self Check Diagnosis History.............................................................4
Triage Chart...................................................................................................5
Flowcharts and Diagrams..............................................................................6
Overall Block Diagram...........................................................................................6
Power and Control Block Diagram.........................................................................7
KDL-32R420B........................................................................................................7
KDL-40R470B........................................................................................................8
No Power Flowchart ..............................................................................................9
Standby LED Blinking Flowchart .........................................................................10
Video Distortion Flowchart................................................................................... 11
Section 3 - Repair Information......................................................................12
Repairing the TV..........................................................................................12
Removing the Table Top Stand............................................................................12
Removing the Lower Cover .................................................................................12
Replacing the Main Board ...........................................................................13
Removing the Speakers ..............................................................................16
Replacing the Switch Unit ...........................................................................16
Section 4 - Exploded View/Part Number Information.................................17
Table Top Stand...........................................................................................17
KDL-32R420B/40R470B .............................................................................18
Connectors ..................................................................................................20
Screws.........................................................................................................21
Section 5 - Accessories/Part Number Information .....................................22
Accessories and Packaging ........................................................................22
Miscellaneous..............................................................................................22
Optional Accessories...................................................................................22
Remote Commander ...................................................................................22
Appendix A: Encryption Key Components ............................................... A-1

KDL-32R420B/40R470B ii
CAUTION!!
These servicing instructions are for use by qualied service personnel only.
To reduce the risk of electric shock, do not perform any servicing other than
that contained in the operating instructions unless you are qualied to do so.
WARNING!!
An isolation transformer should be used during any service to avoid possible
shock hazard, in case of live chassis.
!
SAFETY-RELATED COMPONENT WARNING!!
There are critical components used in LCD color TVs that are important for
safety. These components are identied with shading and
!
mark on the
schematic diagrams and the parts list. It is essential that these critical parts
be replaced only with the part number specied in the parts list to prevent
electric shock, re or other hazard.
NOTE: Do not modify the original design without obtaining written permission
from the manufacturer or you will void the original parts and labor warranty.
ATTENTION!!
For safety reasons, component level repair of the Power Supply Boards
and/or the Inverter Boards is prohibited.
CAUTIONS AND WARNINGS
ATTENTION!!
Ces instructions de service sont à l’usage du personnel de service qualié
seulement. Pour prévenir le risque de choc électrique, ne pas faire l’entretien
autre que celui contenu dans le Mode d’emploi à moins que vous soyez
qualié faire ainsi.
ALERTE!!
An d’eviter tout risque d’electrocution provenant d’un chássis sous tension,
un transformateur d’isolement doit etre utilisé lors de tout dépannage.
!
ATTENTION AUX COMPOSANTS
RELATIFS A LA SECURITE!!
Les composants identies par une trame et par une marque
!
sur les
schemas de principe, les vues explosees et les listes de pieces sont d’une
importance critique pour la securite du fonctionnement. Ne les remplacer
que par des composants Sony dont le numero de piece est indique dans le
present manuel ou dans des supplements publies par Sony. Les reglages
de circuit dont l’importance est critique pour la securite du fonctionnement
sont identies dans le present manuel. Suivre ces procedures lors de
chaque remplacement de composants critiques, ou lorsqu’un mauvais
fonctionnement suspecte.
ATTENTION!!
Pour des raisons de sécurité, Interdire de réparer ou remplacer les
composantes dans les blocs d’alimentation et/ou sur les modules d’inverseur.

KDL-32R420B/40R470B iii
CAUTIONS AND WARNINGS
SAFETY CHECK-OUT
After correcting the original service problem, perform the 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.
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.
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.
5. Look for parts which, though functioning, show obvious signs of
deterioration. Point them out to the customer and 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 in “Leakage Test”.
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.
Follow the manufacturers’ instructions provided with the tester.
2. A battery-operated AC milliammeter.
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. Nearly all
battery-operated digital multimeters that have a 2 VAC range are
suitable. (see Figure A)
To Exposed Metal
Parts on Set
0.15 µF
Earth Ground
AC
Voltmete
r
(0.75V)
Figure A. Use an AC voltmeter to check AC leakage.
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 60W to
100W incandescent (not a neon or uorescent 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)
Figure B. Checking for earth ground.
Trouble Light
AC Outlet Box

KDL-32R420B/40R470B 1
SPECIFICATIONS
System
Television system
ATSC (8VSB terrestrial): ATSC Compliant 8VSB
QAM on cable: ANSI/SCTE 07 2000 (Does not include CableCARD functionality)
Channel coverage
Analog Cable: 1 - 135 / Digital Cable: 1 - 135
Panel system
Speaker output
Input/Output jacks
CABLE/ANTENNA
Y: 1.0 Vp-p, 75 ohms unbalanced, sync negativeVIDEO IN
PB: 0.7 Vp-p, 75 ohms / PR: 0.7 Vp-p, 75 ohms
COMPONENT IN
VIDEO IN
Supported formats: 1080p (60 Hz), 1080i (60 Hz), 720p (60 Hz), 480p, 480i
Audio Input (phono jacks)
Video Input (phono jacks)
HDMI IN 1/MHL
AUDIO
HDMI IN 2 (ARC)
For KDL-40R470B
AUDIO OUT
(Headphone)
Audio output, Headphone (minijack), Subwoofer
NTSC: American TV Standard
Analog Terrestrial: 2 - 69 / Digital Terrestrial: 2 - 69
LCD (Liquid Crystal Display) Panel, LED Backlight
5 W + 5 W (KDL-32R420B), 8 W + 8 W (KDL-40R470B)
75-ohm external terminal for RF inputs
Two channel linear PCM 32, 44.1 and 48 kHz,16, 20 and 24bits, Dolby Digital
HDMI Video: 1080/24p, 1080p (30, 60 Hz), 1080i (60 Hz), 720p (30, 60 Hz), 720/24p, 480p, 480i
MHL Video: 1080/24p, 1080p (30 Hz), 1080i (60 Hz), 720p (30, 60 Hz), 720/24p, 480p, 480i,
PC input
640 x 480, 31.5 kHz, 60 Hz, 800 x 600, 37.9 kHz, 60 Hz, 1,024 x 768, 48.4 kHz, 60 Hz,
1,280 x 768, 47.4 kHz, 60 Hz, 1,280 x 768, 47.8 kHz, 60 Hz, 1,360 x 768, 47.7 kHz, 60 Hz
1,280 x 1024, 64.0 kHz, 60 Hz, *1,920 x 1080, 67.5 kHz, 60 Hz
For KDL-32R420B 640 x 480, 31.5 kHz, 60 Hz, 800 x 600, 37.9 kHz, 60 Hz, 1,024 x 768, 48.4 kHz, 60 Hz
1,280 x 768, 47.4 kHz, 60 Hz, 1,280 x 768, 47.8 kHz, 60 Hz, 1,360 x 768, 47.7 kHz, 60 Hz
* The 1080p timing when applied to the HDMI input will be treated as a video timing and not PC timing
DC IN 19.5 V AC adapter input
•Optional accessories availability depends on its stock.
•Design and specications are subject to change without notice.
•This TV set incorporates MHL 2.
*Dimensions and mass are approximate values.
Model name
KDL-32R420B
Power and others
Others
Power requirement
Power consumption 75 W
45 W
in use
in standby
Screen size*
40
200 x 100 100 x 100
31.5
(32 Class)
(measured diagonally)
(inches)
Display resolution
Dimensions* with stand
(inches)
926 × 584 × 175
926 × 556 × 89
36 × 23 × 7
1
/2
36 × 22 × 3
1
/2
736 × 473 × 144
29 × 18 5
/8 × 5
without stand (mm)
(inches)
wall-mount hole pattern
(mm)
wall-mount screw size
(mm)
Mass*
(lb)
7,4
16,3
4,9
10,8
(kg)
(lb)
7,0
15,4
4,7
10,4
Optional accessories
Operating temperature
19.5 V DC with AC adapter, Rating: Input 110-240 V AC, 50/60 Hz (U.S.A./Canada 120 V AC, 60 Hz)
Less than 0.4 W with 120 V AC and less than 0.5 W with 240 V AC
1,920 dots (horizontal) × 1,080 lines (vertical) 1,366 dots (horizontal) × 768 lines (vertical)
(mm)
(kg)with stand
without stand
M6 (8~12 mm)
MHL Cable: DLC-MB10/DLC-MB20/DLC-MC20
32 ºF – 104 ºF (0 ºC – 40 ºC)
KDL-40R470B
3
/4
736 × 451 × 80
29 × 17 7
/8 × 31 /4
5
/8
SECTION 1 - SPECIFICATIONS AND LAYOUTS
CHECKING THE ACCESSORIES
- Remo
te Control (1)*
- S
ize AAA Batteries (2)
- Software License (1)
- Stand Installation Guide (1)
- AC Adapter
- F
ixing screws for Table-Top Stand
(M5
× 20) (2)
- Cable holder (3)
- Operating Instructions (1)
- Quick Setup Guide (1)
- Safety Regulatory Booklet (1)
* Please refer to the model name printed
on the remote control.

KDL-32R420B/40R470B 2
BOARD LAYOUT
SWITCH
UNIT
MAIN BOARD
(BIS BOARD)
HIL BOARD
WIRELESS
LAN CARD
SECTION 1 - SPECIFICATIONS AND LAYOUTS
KDL-32R420B/40R470B

KDL-32R420B/40R470B 3
WIRE DRESSING
KDL-32R420B/40R470B
SECTION 1 - SPECIFICATIONS AND LAYOUTS

KDL-32R420B/40R470B 4
DIAGNOSING THE ERROR
Before servicing the Television:
1. Verify the TV has the symptom the customer indicated.
2. Check to see if the latest Software is installed.
a. If not, install the latest version.
3. Determine the replacement part required.
VIEWING THE SELF CHECK DIAGNOSIS HISTORY
When an error is detected, the Self Check screen records the number of
times the error occurred. This is helpful in conrming past occurrences of an
error and for determining if an error is intermittent when the customer is not
sure what is causing the television to shut down. If the screen displays a “0”,
no error has occurred.
1. Press
POWER
to turn on the TV and then turn it off again.
2. Press the following buttons on the Remote Commander within 1
second of each other:
Info
i +
Channel 5 Volume
-
POWER
NOTE: This differs from accessing Service Adjustments Mode (Volume +).
SECTION 2 - TROUBLESHOOTING
Self Diagnosis
Supported model
Back <<
002 MAIN_ POWER 001
003 DC_ALERT1 000
003 AUDIO_PROT
000R_ERRECNALAB400
000
000
000RRE_NOCT500
005 PANEL_ID_NVM_ERR
000TILKCAB600
000RRE_PMET700
[Home] Exit
SELF CHEC
K
Indicates
an error
has occurred
Indicates
no error
has occurred
00116 00024 00115
SAMPLE SELF CHECK DIAGNOSIS PAGE

KDL-32R420B/40R470B 5
SECTION 2 - TROUBLESHOOTING
TRIAGE CHART
Use this general Triage Chart to determine what may possibly be causing the error before going out to the customers location.
User
Interface
NG
No Picture
(UI OK) Audio
2X 3X 4X
5X
6X USB
Tuner Tuner
Video SCART
MAIN BOARD
▲ ▲ ▲ ▲ ▲ ▲▲
▲
▲
▲
▲
▲
▲
▲
▲
LIGHT SOURCE BOARD
OPEN CELL
AC ADAPTOR
SPEAKERS
LS HARNESS
SPEAKER HARNESS
Board
Reference
Symptoms - Shutdown.
Power LED blinking
red diagnostics sequences
MAIN HARNESS
FFC CABLE

       
      
   



Component HDMI MHL HP
Main
Speaker Video SCART USBComponent HDMI
*NOTE: REFER TO LCD PANEL SERVICE MANUAL IN REFERENCE LIBRARY DATABASE
FOR CORRECT REPLACEMENT PARTS BASED ON SERIAL NUMBER.
1. Confirm the symptom from the customer. Red Dot: (Primary) Most likely defective part.
2. Select that symptom from the chart. Blue Triangle: (Secondary) Possible defective part.
3. Bring the primary component listed for that symptom.
5. Chart Color Code.
4. Follow the associated flowcharts in the Training Manual to isolate the board.
To access the most recent version of the Triage documents for the models listed in this manual, login into the Sony Authorized Service Portal at
http://www.sony.com/asp.

KDL-32R420B/40R470B 6
SECTION 2 - TROUBLESHOOTING
FLOWCHARTS AND DIAGRAMS
OVERALL BLOCK DIAGRAM
COMPONENT/
COMPOSITE
RF
AUDIO IN (ANALOG)
HDMI 1 (ARC)
AC ADAPTER
LED
IR RX
LCD PANEL, TCON
LED BACKLIGHTS
BIS
H
L
R
OPTICAL AUDIO OUT
MT5560
A/V DECODER
A/V PROCESS
TUNER
USB
HDMI 2 (MHL)
LVDS
AC IN
AUDIO
AMP
AUDIO OUT
MAIN BOARD
&
CONTROL
KEYS Wi-Fi
LD
BOARD
DEMOD