7-5. H3E & H4 Boards and Speaker .................................... 27
7-6. Bezel Assy and LCD Panel ........................................... 28
8. ELECTRICAL PARTS LIST .............................................. 29
OPERATING INSTRUCTIONS
– 2 –
SECTION 1
SAFETY NOTES
KLV-32V400A, V400B
RM-GA011
1-1. Caution Handling of LCD Panel
When installing the LCD Panel, make sure you are grounded
with a wrist band.
When installing the LCD Panel on the wall, the panel must be
secured using the 4 mounting holes on the rear cover.
1) Do not press the panel or frame edge to avoid the risk of
electric shock.
2) Do not scratch or press on the panel with any sharp
objects.
3) Do not leave the module in high temperature or in areas of
high humidity for an extended period of time.
4) Do not expose the LCD panel to direct sunlight.
5) Avoid contact with water. It may cause short circuit within
the module.
6) Disconnect the AC adapter when replacing the backlight
(CCFL) or inverter circuit. (High voltage occurs at the inverter
circuit at 650Vrms)
7) Always clean the LCD panel with a soft cloth material.
8) Use care when handling the wires or connectors of the
inverter circuit. Damaging the wires may cause a short circuit.
9) Protect the panel from ESD to avoid damaging the electronic circuit (C-MOS).
1-2. Safety Check-Out
After correcting the original service problem, perform the
following safety checks before releasing the set to the
customer:-
1-3. 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 0.5mA
(500 microamperes). Leakage current can be measured by
any one of the three methods:-
1. A commercial leakage tester such as the SIMPSON 229
or RCA WT-540A. Follow the manufacturers instructions to
use those 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 0.75V 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 1)
To Exposed Metal
Parts on Set
0.15 µF
1.5 k
Ω
AC
Voltmeter
(0.75 V)
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 contact high-wattage resistors.
3)Check all control knobs, shields, covers, ground straps and
mounting hardware have been replaced. Be absolutely certain
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 test as described next.
Earth Ground
Figure 1. AC voltmeter to check AC leakage
1-4. WARNING !
SAFETY-RELATED COMPONENT WARNING!
COMPONENTS IDENTIFIED BY SHADING AND MARK
!
ON THE EXPLODED VIEWS ARE CRITICAL FOR SAFE
OPERATION. REPLACE THESE COMPONENTS WITH
SONY PARTS WHOSE PART NUMBERS APPEAR AS
SHOWN IN THIS MANUAL OR IN SUPPLEMENTS
PUBLISHED BY SONY. CIRCUIT ADJUSTMENTS THAT ARE
CRITICAL FOR SAFE OPERATION ARE IDENTIFIED IN
THIS MANUAL. FOLLOW THESE PROCEDURES
WHENEVER CRITICAL COMPONENTS ARE REPLACED
OR IMPROPER OPERATION IS SUSPECTED.
– 3 –
KLV-32V400A, V400B
RM-GA011
1-5. LED Free Information
The circuit boards used in these models have been processed
using Lead Free Solder. The boards are identified by the LF
logo located close to the board designation.
Figure 2: LF logo
Figure 3: LF logo on circuit board
The servicing of these boards requires special precautions. It
is strongly recommended to use Lead Free Solder material in
order to guarantee optimal quality of new solder joints. Lead
Free Solder is available under the following part numbers:-
rebmuntraPretemaiDskrameR
7
91-500-046-mm
02-500-046-7m4.0Kg05.0
12-500-046-7m5.0Kg05.0
22-500-046-7m6.0Kg52.0
32-500-046-7m8.0Kg00.1
42-500-046-7m0.1Kg00.1
52-500-046-7m2.1Kg00.1
62-500-046-7m6.1Kg00.1
3.0Kg52.0
m
m
m
m
m
m
m
Due to high melting point of Lead Free Solder, the soldering
iron tip temperature needs to be set to 370 degrees
centigrade. This requires soldering equipment capable of
accurate temperature control coupled with a good heat
recovery characteristics.
For more information on the use of Lead Free Solder,
please refer to http://www.sony-training.com
– 4 –
SECTION 2
SELF DIAGNOSTIC FUNCTION
KLV-32V400A, V400B
RM-GA011
2-1. Overview of Control Buttons
MENU TV/VIDEOVOLUMECHANNELPOWER
2-4. LED Pattern
When safety shutdown occurs, Standby LED display reports the
cause by using the lightning patterns as indicated below.
0.3 sec
0.3 sec
2.0 sec2.0 sec
Example:
The figure above shows LED display when
SHUTDOWN is caused by DC_ALERT 2. It repeats
flashing for a specified number of times in 0.3sec/
cycle and has a 2 seconds interval of lighting off.
Please note that a 2 seconds interval of lighting off
is fixed regardless of abnormal state types.
LIGHT
SENSOR
PICTURE
OFF/
TIMER
STANDBYPOWER
REMOTE
SENSOR
2-2. LED Display Specification
LED Typ e Description
POWERGreen: LED
Remark
Green lights at power ON.
STANDBYRed: One LEDRed lights during standby.
Green lights during Picture
OFF and amber lights
Timer
Green/Amber
: Two LEDs
during Timer activation.
2-3. LED Display Control
Status
Power LED
Display
Standby LED
POWER ON Green lightsOFF
STANDBY
OFFRed lights
Remark
Microcomputer is
in a normal state.
Microcomputer is
in a sleep state.
Failure
Classify the
trouble causes by
the no. of red.
– 5 –
KLV-32V400A, V400B
RM-GA011
2-5. Standby LED Error Display
Perform below countermeasures according to Standby LED blinking times.
Blinking timesErrorCountermeasure
2DC_DET (12V Main Voltage)Replaceeither/both z BG1 Board
3DC_ALERT 1Replace BG1 board.
4DC_ALERT 2Replace BG1 board.
5DC_ALERT 3Replace either/both z BG1 board
z GD Board (20”)
z GP Board (26" and 32")
z G2 Board (37”)
z IP5 Board (40”, 46”)
z Panel
6BACKLIGHT/Replace either/allz GD Board (20”)
INVERTER ERRORz GP Board (26” and 32”)
z G2 Board (37”)
z IP5 Board (40”, 46”)
z BG1 Board
z Panel
7INTERNAL TEMPReplace either/both z GP board
ERRORz BG1 board
z Panel
8AUDIO ERRORReplace either/allz GD Board (20”)
z GP Board (26” and 32”)
z G2 Board (37”)
z IP5 Board (40”, 46”)
z BG1 Board
z Speaker
4-1-10. i) Dress Speaker wire and Connector assy
14P+20P with Sheet Core C & Slide clamp
ii) Dress Speaker Wire with LCD tape
Sheet Core C
Connector assy
14P+20P
Datum
Datum
Datum
– 15 –
Speaker Wire
LCD tape
Insert wire into speaker
bracket's hook
KLV-32V400A, V400B
RM-GA011
4-1-11. Dress Speaker Wire(L) with LCD tape(2X).4-1-12. Dress Connector Assy 14P+20P with
LCD tape.
Datum
Speaker Wire
LCD tape
For Non-CISPR model only
4-1-13. Install AC Cord Holder on AC Power Cord.
AC Cord holder
AC Power Cord
Connector assy 14P+20P
Datum
LCD tape
Caution : Pull wire until cannot reach
Caution : Pull wire until cannot reach
sharp edge area when apply LCD tape.
sharp edge area when apply LCD tape.
170mm
For CISPR model only
4-1-14. Install AC Cord Holder on AC Power Cord.
AC Cord holder
170mm
Ferrite Core
AC Power Cord
70mm
Cable tie
Note : Make sure tighten cable tie and cut excess part.
– 16 –
4-1-15. i) Screw Connector Assy 1P on BG1 & Main Bracket.
ii) Put Connector Assy 1P underneath Speaker Wire.
Speaker Wire
Connector Assy 1P
KLV-32V400A, V400B
RM-GA011
~90
– 17 –
KLV-32V400A, V400B
ERROR
DC_DET
DC_ALERT1
DC_ALERT2
DC_ALERT3
BACKLIGHT
INTERNAL TEMP ERROR
AUDIO ERROR
NVM ERROR
IIC ERROR
BALANCER ERROR
HDMI ERROR
0
0
0
0
0
0
0
0
0
0
0
RESET
0
RM-GA011
SECTION 5
SERVICE ADJUSTMENTS
5-1. Accessing Diagnostic Menu
1. While TV set on standby, press the following sequence on
the remote commander (RM-GA011).
On screen
display
Channel 5
Volume (-)
POWER
2. The following menu will appear on the screen:
Figure 1
3. Press V/v to select ‘Service’.
Service Menu
Status
W/B
Service
Figure 4
4. Press B/b or
to view ‘Service’ category items.
Press V/v to selec /‘P ATTERN’.
Service Menu
Service
TEST RESET
PATTERN
PRODUCTION
APC
OVER MODULATION
OPTIONS
AUTOSET FACTORY
SERIAL NUMBER EDIT
ETI1 CLEAR
No Signal Mute
Cancel
WHITE PATTERN
11111111
Normal
Off
OPT 1
DEFAULT
Cancel
Off
3. To reset, select ‘RESET’ using remote commander and
press
to execute RESET.
4. To quit the diagnostic menu, turn off and on the TV set.
5-2. Aging
1. While TV set on standby, press the following sequence on
the remote commander (RM-GA011).
On screen
display
Channel 5 Volume (+)
POWER
Figure 2
2. The following menu will appear on the screen.
Service Menu
Status
W/B
Service
Figure 5
5. Then press B/b then V/v to select ‘WHITE PATTERN’
and .
Service Menu
Service
PATTERN
Off
WHITE PATTERN
RED PATTERN
GREEN PATTERN
BLUE PATTERN
Figure 6
6. The aging Condition is as the following:
a) Supply voltage: Rating
b) Time: 20 minutes or over
c) Ambient Temp: 22~28 degrees
Figure 3
– 18 –
KLV-32V400A, V400B
RM-GA011
5-3. Resetting the User Menu - Factory Reset
Note: THE TEST RESET option resets all the customer
adjustable data back to factory defaults.
1. While TV set on standby, press the following sequence on
the remote commander (RM-GA011).
On screen
display
Channel 5
Volume (-)
POWER
Figure 7
2. The following menu will appear on the screen:
Service Menu
Status
W/B
Service
Figure 8
3. Press V/v to select ‘Service’.
Service Menu
Status
W/B
Service
5-4. White Balance Adjustment
Note: The white balance need to be adjusted when BG1 board
and Panel is replaced.
1. While TV set on standby, press the following sequence on
the remote commander (RM-GA011).
On screen
display
Channel 5
Volume (-)
POWER
Figure 12
2. The following menu will appear on the screen:
Service Menu
Status
W/B
Service
Figure 13
3. Press B/b or
to view ‘W/B’.
Service Menu
Status
W/B
Service
Figure 9
4. Then press B/b or
to view ‘Service’ category items.
Next select ‘TEST RESET’ by pressing V/v .
Service Menu
Service
TEST RESET
PATTERN
PRODUCTION
APC
OVER MODULATION
OPTIONS
AUTOSET FACTORY
SERIAL NUMBER EDIT
ETI1 CLEAR
No Signal Mute
Cancel
Off
11111111
Normal
Off
OPT1
DEFAULT
Cancel
Off
Figure 10
5. Finally press B/b or then V/v to select ‘OK’ and confirm
selection by pressing .
Service Menu
Service
TEST RESET
OK
Cancel
Figure 14
4. Then press B/b or to view ‘W/B’ category items.
Service Menu
W/B
INITIALIZE
LEVEL
R_DRIVE
G_DRIVE
B_DRIVE0
COLOR_SAVE
INIT START
0
0
0
Cancel
Figure 15
5. Press V/v to select ‘INITIALIZE’.
6Then press B/b or then V/v to select ‘INIT START’ and
execute selection by pressing .
Service Menu
W/B
INITIALIZE
INIT START
INIT END
Figure 16
7. W/B need to be adjusted for all LEVEL (0~4).
Figure 11
– 19 –
KLV-32V400A, V400B
RM-GA011
For Level 0
8. Select 'LEVEL' using V/v and choose ‘0’.Then do
adjustment for R_Drive, G_Drive and B_Drive. To increase/
decrease data value, press V/v .
9. Once adjustment has completed for R_Drive, G_Drive and
B_Drive, press V/v to select ‘COLOR SAVE’. Next press
B/b then V/v to choose ‘OK’ and press
Service Menu
W/B
COLOR_SAVE
10. Repeat step 8 and 9 for level 1~4.
11. Once W/B adjustment has been completed for all levels
(0~4), select ‘INITIALIZE’, choose ‘INT END’ and press
.
OK
Cancel
Figure 17
.
Service Menu
W/B
INITIALIZE
INIT START
INIT END
Figure 18
5-5. Board & Panel Replacement
When replacing the BG1 board and Panel, make sure to readjust
the W/B.
– 20 –
6-1. BLOCK DIAGRAM
KLV-32V400A, V400B
RM-GA011
SECTION 6
DIAGRAMS
Due to complexity of the board, performing
component level field repairs are not recommended.
Complete board replacement is required if service is
necessary.
6-2. CIRCUIT BOARD LOCATION
BG1 Board
Switch Unit
GP Board
H4 Board
H3E Board
– 21 –
KLV-32V400A, V400B
RM-GA011
6-3. SCHEMATIC DIAGRAM6-4. PRINTED WIRING BOARDS
BoardFunctionNote
BG1I/O/Audio/VCTP/DDR/HDMI/Due to complexity of the board, performing
GPPower Supplynecessary.
H4SIRCSprinted wiring boards are not included.
H3ELED/Optical SensorExploded View or Electrical Parts List
6-5. SEMICONDUCTOR
DC-DC Converter/Tuner/Subcomponent level field repairs are not
Croma/STBY Microrecommended. Complete board
replacement is required if service is
Therefore schematic diagrams and
For part number information, refer to
section in this manual.
Due to complexity of the board, performing
component level field repairs are not recommended.
Complete board replacement is required if service is
necessary.
– 22 –
SECTION 7
EXPLODED VIEWS
KLV-32V400A, V400B
RM-GA011
•Components not identified by a part
number or description are not stocked
because they are not required for routine
service.
NOTE: The components identified by shading and ! mark are
critical for safety. Replace only with part number specified.
Note: The components identified by mark contain
confidential information. Strictly follow the instructions
whenever the components are repaired and /or replaced.
•The component parts of an assembly
are indicated by the reference numbers
in the far right column of the part list and
within the dotted lines of the diagram.
7-1. REAR CABINET AND STAND ASSY
f
f
f
a
k
f
•Item marked with an asterisk (*) are not
stocked since they are seldom required
for routine service. Some delay should
be anticipated when ordering these
components.
a 2-580-591-01SCREW, +PSW M3X5
b 2-580-600-01SCREW, +PSW M4X8
c2-580-606-01SCREW, +PSW M5X8
d 2-580-626-01SCREW, SP 4-4O UNC
e 2-580-629-01SCREW, +BVST 3X8
f2-580-640-01SCREW, +BVTP2 4X16
g 2-580-644-01SCREW, +KTP2 3X8
h 2-674-965-31SCREW, +PSW 3SG
i3-873-012-01SCREW, +PWH M5X16
j3-873-013-01SCREW, +PWH M5X10
k7-685-648-79SCREW, +BVTP 3X12 TYPE2 IT-3
l2-580-608-01SCREW +PSW M5 X 16
(32V400A/R(E,EA,ME,Philippines,Saudi Arabia,
South Africa,Thailand))
X-2318-765-1BEZEL ASSY (32AM)(T)
(32V400A/T(E,EA,ME,Philippines,Saudi Arabia,
South Africa))
X-2190-035-1BEZEL ASSY (32AM)(W)
(32V400A/W(E,EA,ME,Philippines,
Saudi Arabia,South Africa,Thailand))
2521-802-653-12LCD PANEL (32 WXGA TFT)
2531-966-101-21HARNESS WITH CONNECTOR (LVDS)
(Except 32V400A(Iran,Vietnam))
1-966-101-31HARNESS WITH CONNECTOR (LVDS)
(32V400A(Iran,Vietnam))
253
– 28 –
KLV-32V400A, V400B
The components identified by shadingand mark ! are critical for safety.Replace only with part number specified.
The components identified by mark containconfidential information. Strictly follow theinstructions whenever the components arerepaired and /or replaced.
The components identified by shading
and mark ! are critical for safety.
Replace only with part number specified.
The components identified by mark contain
confidential information. Strictly follow the
instructions whenever the components are
repaired and /or replaced.
REF NO. PART NO.DESCRIPTIONREMARKREF NO. PART NO.DESCRIPTIONREMARK
A-1530-495-A BG1 MOUNT SERVICE (Except 32V400B)
A-1527-549-A BG1 MOUNT SERVICE (32V400B)
**********************************
A-1540-080-A GP COMPLETE KIT (32)
*********************
* A-1535-202-A H3E MOUNT
************
* A-1530-492-A H4 MOUNT
***********
Due to complexity of the board, performing component level field
repairs is not recommended.
If service is required, complete board replacement is required.
Part number information refer to the Exploded View or Electrical
Par ts Lists section of this Service Manual.