KLV-32D300A, KLV-32V300A, KLV-40D300A, KLV-40V300A, KLV-46V300A - Sony TV Service Manual (repair manual)

Model
KLV-32D300A KLV-32V300A KLV-40D300A KLV-40V300A KLV-46V300A
Pages
40
Size
3.59 MB
Type
PDF
Document
Service Manual
Brand
Device
TV
File
klv-32d300a-klv-32v300a-klv-40d300a-klv-40v300a-kl.pdf
Date

View Sony KLV-32D300A / KLV-32V300A / KLV-40D300A / KLV-40V300A / KLV-46V300A Service Manual online

LCD Color TV
WAX3 
CHASSIS
KLV-32D300A/40D300A
KLV-32V300A/40V300A/46V300A
Taiwan Model
SERVICE MANUAL
KLV-32/40D300A, 32/40/46V300A (WB)     2
SPECIFICATIONS
Television system:
NTSC
American TV Standard
Channel coverage:
VHF
2-13
UHF
14-69
CATV
1-125
Antenna:
75-ohm external terminal for VHF/UHF
Screen size (measured diagonally):
KLV-32D300A/KLV-32V300A:32 inches
KLV-40D300A/KLV-40V300A:40 inches
KLV-46V300A: 46 inches
Panel System:
LCD (Liquid Crystal Display) Panel
Display resolution (horizontal 
××××× vertical):
1,366 dots 
× 768 lines
VIDEO IN 1/2/3:
S VIDEO (4-pin mini DIN):
(For KLV-32D300A/KLV-40D300A: VIDEO 1 only.)
(For KLV-32V300A/KLV-40V300A/KLV-46V300A: VIDEO
1/2 only.)
Y: 1.0 Vp-p, 75 ohms unbalanced, sync negative
C: 0.286 Vp-p (Burst signal), 75 ohms
VIDEO:
1 Vp-p, 75 ohms unbalanced, sync negative
AUDIO:
500 mVrms (100% modulation)
Impedance: 47 kilohms
COMPONENT IN 1/2:
Y P
B
/C
B
 P
R
/C
R
 (Component Video):
Y: 1.0 Vp-p, 75 ohms unbalanced, sync negative
P
B
/C
B
: 0.7 Vp-p, 75 ohms
P
R
/C
R
: 0.7 Vp-p, 75 ohms
Signal format: 480i, 480p, 720p, 1080i, 1080p
AUDIO:
500 mVrms (100% modulation)
Impedance: 47 kilohms
HDMI IN 1/2/3:
(Input 3 is for KLV-32D300A, KLV-40D300A only.)
HDMI:
Video: 480i, 480p, 720p, 1080i, 1080p, 1080/24p
Audio: Two channel linear PCM 32, 44.1 and 48 kHz,
16, 20 and 24 bits
AUDIO:
500 mVrms (100% modulation)
Impedance: 47 kilohms
AUDIO OUT:
500 mVrms (100% modulation)
More than 1 Vrms at the maximum volume setting (Variable)
More than 500 mVrms (Fixed)
PC IN:
D-sub 15-pin, analog RGB, 0.7 Vp-p, 75 ohms, positive
See the PC Input Signal Reference Chart on page 48.
PC AUDIO INPUT:
Stereo mini jack, 0.5 Vrms, 1 kilohm
Headphones:
Stereo mini jack
Impedance: 16 ohms
Speaker:
Full range:
KLV-32D300A/ KLV-32V300A: 42 
× 150 mm (2)
KLV-40D300A/KLV-40V300A: 55 
× 155 mm (2)
KLV-46V300A: 70 
× 130 mm (2)
Speaker output:
10 W + 10 W
Power requirement:
110 V AC, 60 Hz
Power consumption:
In use:
KLV-32D300A: 160 W
KLV-40D300A: 180 W
KLV-32V300A: 150 W
KLV-40V300A: 170 W
KLV-46V300A: 210 W
In standby: Less than 0.1 W
Dimensions (W/H/D):
KLV-32D300A/ KLV-32V300A: (with stand)
790 
× 581 × 214 mm
(without stand) 790 
× 530 × 100 mm
KLV-40D300A/KLV-40V300A: (with stand)
981 
× 696 × 265 mm
(without stand) 981 
× 643 × 110 mm
KLV-46V300A:
(with stand)
1114 
× 782 × 306 mm
(without stand) 1114 
× 730 × 115 mm
Mass:
KLV-32D300A: (with stand)
17 kg
(without stand) 15 kg
KLV-40D300A: (with stand)
25 kg
(without stand) 21 kg
KLV-32V300A: (with stand)
16 kg
(without stand) 14 kg
KLV-40V300A: (with stand)
24 kg
(without stand) 20 kg
KLV-46V300A: (with stand)
31 kg
(without stand) 26 kg
Supplied accessories:
Remote control RM-CA008 (1)
Size AA batteries (2)
AC power cord (1)
HD15-HD15 cable (1)
Support belt (1), securing screw (1) and wood screw (1)
Cable holder (1)
Operating Instructions (1)
Leaflet (Installing the Wall-Mount Bracket) (1)
Warranty Card (1)
Optional accessories:
Wall-Mount Bracket: SU-WL500
TV Stand: SU-FL62
Design and specifications are subject to change
without notice.
 Optional accessories’ availability depends on
its stock.
KLV-32/40D300A, 32/40/46V300A (WB)     3
CAUTION
These servicing instructions are for use by qualified 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 qualified to do so.
WARNING!!
An isolation transformer should be used during any service to
avoid possible shock hazard, because of live chassis.
The chassis of this receiver is directly connected to the ac power
line.
!
 
SAFETY-RELATED COMPONENT
WARNING!!
Replace all components with Sony parts whose part numbers
appear as shown in this manual or in supplements
published by Sony.
WARNINGS AND CAUTIONS
SAFETY-RELATED COMPONENT
WARNING
It is essential that all critical parts be replaced only with the part
number specified in the electrical parts list to prevent electric
shock, fire, 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 guarantee.
USE CAUTION WHEN HANDLING THE LCD PANEL
When repairing the LCD panel, be sure you are grounded by
using a wrist band.
When repairing the LCD panel on the wall, the LCD panel must
be secured using the 4 mounting holes on the rear cover.
1) Do not press on 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 temperatures 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 a short circuit within
the module.
6) Disconnect the AC power 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.
9) Protect the panel from ESD to avoid damaging the electronic
circuit (C-MOS).
KLV-32/40D300A, 32/40/46V300A (WB)     4
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 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.
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
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.
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).
To  Exposed Metal
Parts on Set
0.15 
µF
Earth Ground
AC
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.
KLV-32/40D300A, 32/40/46V300A (WB)     5
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.
1-1. 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 .
Number of times STANDY LED
Monitoring Items
Diagnostic Item Description
(Red) flashes
(Screen Display)
2 times
DC_DET
Main power supply voltage error (12V, etc)
3 times
DC_ALERT1
Malfunction of 3.3V line (Trident circuit, etc)
4 times
DC_ALERT2
Malfunction of 5V line
(Voltage Supply to FE, etc)
5 times
DC_ALERT3
Malfunction of power supply for screen
6 times
BACKLIGHT
Malfunction of inverter or overcurrent, etc
7 times
 *2
TEMPERATURE
Abnormal temperature inside unit
8 times
AUDIO
Audio circuit error (amplifier, etc.)
9 times (unused)
(unused)
10 times
DEF
Digital FE circuit error
11 times
B-ENGINE
Malfunction of Trident IC or around IC
12 times
HFR
BH board error
 *1
13 times
(No item on screen display)
Malfunction of balancer
*1: When safety shutdown occurs because of FRC ACK, 1.5V line, 2.5V/3.3V line, or Panel 12V malfunction, BH board is considered
to be abnormal.
*2: If abnormal temperature of BH board occurs, STANDY LED (Red) flashes is same as abnormal temperature inside unit, the error is
differentiated by shot unit down or not. When the unit shut down, abnormal temperature inside unit occurs.
1-2. DISPLAY OF STANDBY LED FLASH COUNT
1-3. 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 lamp from flashing.
PIC OFF/TIMER
STANDBY
POWER
STANDBY LED
LIGHT SENSOR
2 times
4 times
5 times
LED ON  0.3 sec.
LED OFF 0.3 sec.
LED OFF
3 sec. 
[ FLASH COUNT ]
Note: One flash counts is not self-diagnostic.
KLV-32/40D300A, 32/40/46V300A (WB)     6
1-4. 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:
1-4-1. 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”.
1-5. Quitting Self-diagnostic screen
To quit the entire self-diagnostic screen, turn off the power switch on the remote commander or the main unit.
DISPLAY/i-PLATE 
Channel 5
Volume
TV POWER
-
Note : that this differs from entering 
         the service mode (volume +)
DC_DET
DC_ALEAT1
DC_ALERT2
DC_ALERT3
BACKLIGHT
TEMPERATURE
AUDIO
AUDIO FAN *1
DFE
B-ENGINE
HFR
0
0
0
0
0
0
0
0
0
0
0
TV
Monitoring Items
Error Count Record
For details, refer to "1-1. DIAGNOSTIC TEST INDICATORS"
[ SELF-DIAGNOSTIC SCREEN DISPLAY ]
Number "0": means that no fault detected.
Number "1": means a fault was detected one time only.
*1 : KLV-32/40D300A Model only
KLV-32/40D300A, 32/40/46V300A (WB)     7
TABLE OF CONTENTS
SAFETY CHECK-OUT ............................................. 4
SELF DIAGNOSIS FUNCTION ................................ 5
1. DISASSEMBLY ............................................... 1-1
1-1. KLV-32D300A/32V300A ...................................... 1-1
1-1-1.
REAR COVER REMOVAL ............................ 1-1
1-1-2.
STAND ASSY AND VESA ARM ASSY
REMOVAL ...................................................... 1-1
1-1-3.
H1 BOARD REMOVAL ................................. 1-2
1-1-4.
U1 AND U2 BOARDS AND SIDE
TERMINAL ..................................................... 1-2
1-1-5.
POWER UNIT REMOVAL ............................ 1-3
1-1-6.
DTT (TOP) SHIELD REMOVAL .................. 1-3
1-1-7.
BG1/UT BOARD REMOVAL ........................ 1-4
1-1-8.
BH BOARD REMOVAL (KLV-32D300A) ... 1-4
1-1-9.
UNDER COVER REMOVAL ........................ 1-5
1-1-10. SPEAKER REMOVAL ................................... 1-5
1-1-11. LCD PANEL REMOVAL ............................... 1-6
1-2. KLV-40D300A, 40/46V300A ............................... 1-7
1-2-1.
REAR COVER REMOVAL ............................ 1-7
1-2-2.
STAND ASSY AND VESA ARM ASSY
REMOVAL ...................................................... 1-7
1-2-3.
H1 BOARD REMOVAL ................................. 1-8
1-2-4.
U1 AND U2 BOARDS AND SIDE
TERMINAL REMOVAL ................................ 1-8
1-2-5.
G3 AND D1 BOARDS REMOVAL ............... 1-9
1-2-6.
DTT (TOP) SHIELD REMOVAL .................. 1-9
1-2-7.
BG1/UT BOARD REMOVAL ...................... 1-10
1-2-8.
BH BOARD REMOVAL (KLV-40D300A) . 1-10
1-2-9.
AC INLET AND UNDER COVER
REMOVAL .................................................... 1-11
1-2-10. LCD BKT BTM L/R ASSY .......................... 1-11
1-2-11. SPEAKER REMOVAL ................................. 1-12
1-2-12. H3 AND H4 BOARDS REMOVAL ............. 1-12
1-2-13. D2 BOARD REMOVAL ............................... 1-13
1-2-14. LCD PANEL AND BEZEL ASSY
REMOVAL .................................................... 1-14
2. DIAGRAMS ..................................................... 2-1
2-1. CIRCUIT BOARDS LOCATION ......................... 2-1
(1)
KLV-32D300A, 32V300A .............................. 2-1
(2)
KLV-40D300A, 40/46V300A ......................... 2-1
3. EXPLODED VIEWS ........................................ 3-1
3-1. KLV-32D300A/32V300A ...................................... 3-2
3-1-1.
REAR COVER AND STAND ASSY ............. 3-2
3-1-2.
CHASSIS-1 ...................................................... 3-3
3-1-3.
CHASSIS-2 ...................................................... 3-4
3-1-4.
CHASSIS-3 ...................................................... 3-5
3-1-5.
SPEAKER ........................................................ 3-6
3-1-6.
BEZEL ASSY AND LCD PANEL ................. 3-7
3-2. KLV-40D300A, 40/46V300A ............................... 3-8
3-2-1.
REAR COVER AND STAND ASSY ............. 3-8
3-2-2.
CHASSIS-1 ...................................................... 3-9
3-2-3.
CHASSIS-2 .................................................... 3-10
3-2-4.
CHASSIS-3 .................................................... 3-11
3-2-5.
SPEAKER ...................................................... 3-12
3-2-6.
BEZEL ASSY AND LCD PANEL ............... 3-13
3-3. PACKING MATERIALS
(KLV-32D300A/32V300A) ................................. 3-14
3-4. PACKING MATERIALS
(KLV-40D300A/40V300A) ................................. 3-15
3-5. PACKING MATERIALS (KLV-46V300A) ....... 3-16
KLV-32/40D300A, 32/40/46V300A (WB)     1-1
1-1. KLV-32D300A/32V300A
1-1-1. REAR COVER REMOVAL
SECTION 1
DISASSEMBLY
1-1-2. STAND ASSY AND VESA ARM ASSY REMOVAL
1
 Three screws
   (+BV3X12)
2
 Two screws
   (+PSW M5X16)
3
 Two screws
   (+BVTP2 4X16)
3
 Three screws
   (+BVTP2 4X16)
3
 Four screws
   (+BVTP2 4X16)
3
 Four screws
   (+BVTP2 4X16)
4
 Rear cover
1
 Three screws
   (+PSW M5X16)
2
 Stand (M-WS) assy
5
 VESA arm (32) assy
7
 VESA arm (32) assy
6
 One screw
   (+PSW M5X16)
3
 One screw
   (+PSW M3X5)
4
 One screw
   (+PSW M5X16)
KLV-32/40D300A, 32/40/46V300A (WB)     1-2
KLV-32D300A/32V300A
1-1-3. H1 BOARD REMOVAL
1-1-4. U1 AND U2 BOARDS AND SIDE TERMINAL
2
 Multi button assy
3
 H1 board
CN101
1
 Connector
1
 Two screws
   (+BV 3X12)
2
 U1 board 
2
 U2 board 
3
 Side jack (M) holder
3
 Side jack (M) holder
1
 Two screws
   (+PSW M3X5)
4
 Side terminal
1
 One screw
   (+BV 3X12)
1
 One screw
   (+BV 3X12)
KLV-32V300A
KLV-32D300A
Plate ground (M)
KLV-32/40D300A, 32/40/46V300A (WB)     1-3
KLV-32D300A/32V300A
1-1-5. POWER UNIT REMOVAL
1-1-6. DTT (TOP) SHIELD REMOVAL
2
 Two screws
   (+PSW 3SG)
2
 Two screws
   (+PSW 3SG)
CN6202
1
 Connectors
CN6201
Hooks
Claws
3
 Power unit
4
 G1 bracket
1
 Connector
2
 Two screws (HEX)
1
 Two screws
   (+PSW M3X5)
3
 DTT (TOP) shield
1
 Two screws
     (+PSW M3X5)
1
 Three screws
   (+PSW M3X5)
1
 One screw
     (+PSW M3X5)
1
 One screw
   (+PSW M3X5)

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