SONY KLV-32L400A, KLV-37L400A Service Manual

HISTORY INFORMATION FOR THE FOLLOWING MANUAL:

SERVICE MANUAL

MODEL NAME REMOTE COMMANDER DESTINATION

KLV-32L400A
KLV-37L400A

RM-YA008 BRAZIL

RM-YA008 BRAZIL

WAX3B

CHASSIS

ORIGINAL MANUAL ISSUE DATE: 6/2008

REVISION DATE SUBJECT

6/2008 No revisions or updates are applicable at this time.

LCD COLOR TELEVISION

9-883-791-01

Self Diagnosis

Supported model

SERVICE MANUAL

MODEL NAME REMOTE COMMANDER DESTINATION

KLV-32L400A
KLV-37L400A

RM-YA008 BRAZIL

RM-YA008 BRAZIL

WAX3B

CHASSIS

9-883-791-01

KLV-32L400A RM-YA008

LCD COLOR TELEVISION

KLV-32L400A/37L400A

TABLE OF CONTENTS

SECTION TITLE PAGE SECTION TITLE PAGE

Specifi cations ................................................................................. 4

Warnings and Cautions .................................................................. 6

Safety-Related Component Warning .............................................. 7

Safety Check-Out ........................................................................... 9

Self-Diagnostic Function ............................................................... 10

SECTION 1: DISASSEMBLY ............................................................... 12

1-1. Rear Cover Removal ............................................................ 12

1-2. HL1 Board Removal ............................................................. 12

1-3. UM Board and Jack Holder Removal ................................... 13

1-4. BG2A Board and RF Bracket Removal ................................ 13

1-5. G Bracket and GM Board Removal ...................................... 14

1-6. VESA Arms, Under Cover and Table-Top Stand Removal

(KLV-32L400A ONLY) .......................................................... 15

1-7. VESA Arms, Under Cover and Table-Top Stand Removal

(KLV-32L400A ONLY) .......................................................... 16

1-8. Speaker, Light Guide and HL5 Board Removal ................... 16

1-9. Brackets Removal (KLV-32L400A ONLY) ............................ 17

1-10. Bracket Removal (KLV-37L400A ONLY) .............................. 17

1-11. LCD Panel Removal ............................................................. 18

1-12. Inverter Board Removal ...................................................... 18

SECTION 2: SERVICE ADJUSTMENTS ............................................. 19

2-1. Using the Remote Commander for Electrical Adjustments .. 19

2-2. Accessing Service Adjustment Mode ................................... 19

2-3. Viewing the Service Menus .................................................. 19

2-4. Changing Service Data ........................................................ 20

2-4-1. Exiting Service Mode ................................................. 20

2-5. Verifying Service Data Changes .......................................... 20

SECTION 3: DIAGRAMS ..................................................................... 21

3-1. Circuit Boards Location ........................................................ 21

3-2. Printed Wiring Boards and

Schematic Diagrams Information ......................................... 21

3-3. Block Diagram ...................................................................... 23

3-4. Schematics and Supporting Information .............................. 24

BG2A Board Schematic Diagram (1 of 8) ............................ 24

BG2A Board Schematic Diagram (2 of 8) ............................ 25

BG2A Board Schematic Diagram (3 of 8) ............................ 26

BG2A Board Schematic Diagram (4 of 8) ............................ 27

BG2A Board Schematic Diagram (5 of 8) ............................ 28

BG2A Board Schematic Diagram (6 of 8) ............................ 29

BG2A Board Schematic Diagram (7 of 8) ............................ 30

BG2A Board Schematic Diagram (8 of 8) ............................ 31

G1M Board Schematic Diagram (KLV-32L400A ONLY) ....... 34

G5M Board Schematic Diagram (KLV-37L400A ONLY) ....... 37

HL1 Board Schematic Diagram ............................................ 40

HL5 Board Schematic Diagram ............................................ 42

UM Board Schematic Diagram ............................................. 44

3-5. Semiconductors ................................................................... 46

SECTION 4: EXPLODED VIEWS ........................................................ 47

4-1. Rear Cover Assembly and Table-Top Stand Assembly ....... 47

4-2. Chassis ................................................................................ 48

4-3. Connectors (KLV-32L400A Only) ......................................... 49

4-4. Connectors (KLV-37L400A Only) ......................................... 50

4-5. Bezel Assembly and LCD Panel (KLV-32L400A Only) ......... 51

4-6. Bezel Assembly and LCD Panel (KLV-37L400A Only) ......... 52

4-7. Screw Legend ...................................................................... 53

SECTION 5: ELECTRICAL PARTS LIST ............................................ 54

KLV-32L400A/37L400A

APPENDIX A: ENCRYPTION KEY COMPONENTS ..........................A-1

3

SPECIFICATIONS

KLV-32L400A/37L400A

Power Requirements

Power Consumption (W)

In Use (Max)

In Standby

AC 120V - 220V, 50/60 Hz

155W (KLV-32L400A Only)
190W (KLV-37L400A Only)
Less than 1W

VIDEO (IN) 1/2
S Video (4-Pin Mini DIN (VIDEO 1 Only)
Y: 1.0 Vp-p, 75 ohms unbalanced, sync negative

C: 0.286 Vp-p (Burst signal), 75 ohms

Video

1.0 Vp-p, 75 ohms unbalanced, sync negative

Audio

500 mVrms (100% modulation)
Impedance:47 kilohms

COMPONENT IN 1/2
YP

(Component Video)

BPR

Y:1.0 Vp-p, 75 ohms unbalanced, sync negative
PB:0.7 Vp-p, 75 ohms
PR: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:
HDMI: Video:480i, 480p, 720p, 1080i, 1080p

Audio: Two channel linear PCM 32, 44.1 and
48 kHz, 16, 20 and 24 bits
AUDIO: (HDMI In 2 Only) 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

PC AUDIO INPUT:
Stereo mini jack, 500 mVrms (100% modulation)
Impedance: 47 kilohms

HEADPHONES:
Stereo mini jack
Impedance: 16 ohms

KLV-32L400A/37L400A

Trademark Information

This TV incorporates High-Definition Multimedia Interface (HDMI™)
technology. HDMI, the HDMI logo and High-Definition Multimedia
Interface are trademarks or registered trademarks of HDMI Licensing
LLC.

Blu-ray is a trademark.
“BRAVIA” and , , BRAVIA

Theatre Sync and DMPORT are trademarks or
registered marks of Sony Corporation.

“PLAYSTATION” is a registered trademark
and “PS3” is a trademark of Sony Computer
Entertainment Inc.

Macintosh is a trademark licensed to Apple Computer, Inc., registered in the
U.S.A. and other countries.

Design and specifi cations are subject to change without notice.

4

Power Consumption

in standby

Speaker Output (W)

Speaker/Full Range (2)

Dimensions (W x H x D)

with stand

without stand

wall -mount hole pattern (mm)

Mass

with stand

without stand

in use

mm

in

mm

in

mm

in

kg

lb

kg

lb

KLV-37L400AKLV-32L400A

155W 190W

Less than 1W

10W + 10W

146 x 35 mm

3/4

3/8

5

x1

796 x 590 x 214 918 x 655 x 265

3/8

1/4

31

x 23

x 8

1/2

36

1/4

x 25

7/8

x 10

796 x 544 x 100 918 x 609 x 108

3/8

31

x 21

1/2

x 4

36

1/4

x 24 x 4

200 x 200 mm 300 x 200 mm

15 kg

34 lb

13 kg

29 lb

All measurements are approximations.

20.5 kg
46 kg

17 kg
38 lb

KLV-32L400A/37L400A

1/2

3/8

Television system

NTSC 3.58/PAL-M/PAL-N Trinorma

Channel coverage

VHS: 2-13
UHF: 14-69
CATV: 1-125

Antenna

75-ohm external terminal for VHF/UHF/CABLE

Panel System

LCD (Liquid Crystal Display) Panel

Display Resolution (horizontal x vertical):

1,366 dots x 768 lines

Screen Size (measured diagonally)

approx. 31.5 inches / 80 cm (KLV-32L400A Only)
approx. 37 inches / 94 cm (KLV-37L400A Only)

Supplied Accessories

Remote Commander RM-YA008
Two Size AA (R6) Batteries
Cable Holder
Operating Instructions
Quick Setup Guide
Safety and Regulatory Booklet

Optional Accessories

Headphones Plug Adapter
Connecting Cables
Wall-Mount Bracket
SU-WL500
75-ohm coaxial cable
HD15-HD15 cable

KLV-32L400A/37L400A

5

KLV-32L400A/37L400A

WARNINGS AND CAUTIONS

CAUTION

These servicing instructions are for use by qualifi 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 qualifi ed to do so.

CARRYING THE TV

To avoid dropping the TV and causing serious injury, be sure to follow
these guidelines:

s Before carrying the TV, disconnect all cables.
s Carrying the large size TV requires two or more people.
s When you carry the TV, place your hand as illustrated and hold it

securely. Do not put stress on the LCD panel.

s When lifting or moving the TV, hold it firmly from the bottom. Place

your palm directly under the panel.

s When carrying, do not subject the TV to shocks or vibration, or

excessive force.

s Place your palm directly underneath, but do not squeeze the

panel’s speaker grill area.

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!!

Components identifi ed by shading and ! mark on the schematic diagrams, exploded views, and in the parts list 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 identifi ed in this manual. Follow these procedures whenever critical components are replaced or improper operation is
suspected.

KLV-32L400A/37L400A

6

SAFETY-RELATED COMPONENT WARNING

KLV-32L400A/37L400A

There are critical components used in LCD color TVs that are important for safety. These components are identifi ed with shading and
mark on the schematic diagrams and the electrical parts list. It is essential that these critical parts be replaced only with the part number
specifi ed in the electrical parts list to prevent electric shock, fi 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 guarantee.

!

USE CAUTION WHEN HANDLING THE LCD PANEL

When repairing the LCD panel, be sure you are grounded by using a wrist band.

When installing the LCD panel on a wall, the LCD panel must be secured using the 4 mounting holes on the rear cover.

To avoid damaging the LCD panel:

 do not press on the panel or frame edge to avoid the risk of electric shock.
 do not scratch or press on the panel with any sharp objects.
 do not leave the module in high temperatures or in areas of high humidity for an extended period of time.
 do not expose the LCD panel to direct sunlight.
 avoid contact with water. It may cause a short circuit within the module.
 disconnect the AC adapter when replacing the backlight (CCFL) or inverter circuit.

(High voltage occurs at the inverter circuit at 650Vrms.)

 always clean the LCD panel with a soft cloth material.
 use care when handling the wires or connectors of the inverter circuit. Damaging the wires may cause a short.
 protect the panel from ESD to avoid damaging the electronic circuit (C-MOS).

LEAKAGE CURRENT HOT CHECK CIRCUIT

KLV-32L400A/37L400A

7

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 e.g. H1 etc [ see example ]. The
servicing of these boards requires special precautions to be taken as
outlined below.

KLV-32L400A/37L400A

example 1

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 :

rebmuntraP retemaiD skrameR

91-500-046-7mm3.0gK52.0

02-500-046-7mm4.0gK05.0

12-500-046-7mm5.0gK05.0

22-500-046-7mm6.0gK52.0

32-500-046-7mm8.0gK00.1

42-500-046-7mm0.1gK00.1

52-500-046-7mm2.1gK00.1

62-500-046-7mm6.1gK00.1

Due to the higher 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

KLV-32L400A/37L400A

8

SAFETY CHECK-OUT

KLV-32L400A/37L400A

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.

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).

Leakage Test

0.15 μF

Figure A. Using an AC voltmeter to check AC leakage. Figure B. Checking for earth ground.

To Exposed Metal
Parts on Set

Earth Ground

AC
Voltmeter
(0.75V)

Trouble Light

AC Outlet Box

Ohmmeter

Cold-water Pipe

KLV-32L400A/37L400A

9

KLV-32L400A/37L400A

SELF-DIAGNOSTIC FUNCTION

The units in this manual contain a self-diagnostic function. If an error occurs, the TIMER/PIC OFF LED indicator will automatically begin to fl ash. The
number of times the LED fl ashes translates to a probable source of the problem. A defi nition of the TIMER/PIC OFF LED fl ash 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. Diagnostic Test Indicators

When an error occurs, the TIMER/PIC OFF LED indicator will fl ash a set number of times to indicate the possible cause of the problem. If there is more
than one error, the indicator will identify the fi rst of the problem areas.

Control Buttons

Self Diagnosis

Supported model

Description of LED Indictors

LED LED Type Description

POWER LED Green LED

STANDBY LED Red LED

TIMER/PIC OFF

LED

Display of TIMER/PIC OFF LED Flash Count

Amber/Green LED

2 times

5 times

LED ON 0.3 sec.

LED OFF 0.3 sec.

* Light is green when the TV set is on.
* Light is red when the TV set is in PC standby mode.
* Blinks red when indicating the TV may need servicing
* Light is amber when the timer is set.
* Light is green when the Picture Off feature activated.

LED OFF

3 sec.

KLV-32L400A/37L400A

10

KLV-32L400A/37L400A

Viewing the Self Check Diagnostic List

1. TV must be in standby mode. (Power off).

2. Press the following buttons on the Remote Commander within a second of each other:

DISPLAY

The Self Check list displays. This differs from accessing Service Adjustments.

Results for all of the following diagnostic items are displayed on screen. No error has occurred if the screen displays a “0”

Channel 5 Volume -

TV POWER

.

TV

DC_DET 0
DC_ALERT1 0
DC_ALERT2 0
DC_ALERT3 0
BACKLIGHT 0
TEMPERATURE 0
AUDIO 1
DFE 0

“1” is displayed when an error is detected one or more times.

“0” is displayed when no error has been detected

.

B-ENGINE 0
HFR 0

Failure LED Displays

MONITORING ITEMS NUMBER OF STANDBY LED

(RED) BLINKING TIMES

Main power supply voltage error 2

DC_ALERT 1 3

DC_ALERT 2 4

DC_ALERT 3 5

Backlight error 6

Internal temperature error 7

Audio error 8

Fan error (HFR model only) 9

Digital FE error 10

Trident error 11

*Each of the above blinking is repeated every 2 seconds

LED Displays during Aging

Condition LED Displays

When AGING_TIMER > 0 Green (0.5 Sec) t Off (0.5 sec) t Green (0.5 sec) t Off (0.5 sec)

When AGING_TIMER = 0 Green (3.0 sec) t Off (3.0 sec) t Green (3.0 sec) t Off (3.0 sec)

Clearing the Self Check Diagnostic List

1. In Service Mode, turn the TV off, then on.

KLV-32L400A/37L400A

11

1-1. REAR COVER REMOVAL

1

Remove 14 screws (KLV-32L400A ONLY)

Remove 16 screws (KLV-37L400A ONLY)

2

Remove 2 screws

3

Remove 2 screws from Terminals

KLV-32L400A/37L400A

SECTION 1: DISASSEMBLY

Bezel

1

2

3

1-2. HL1 BOARD REMOVAL

1

Slide out HL1 Block Assembly from bezel

2

Disconnect 1 connector

3

Release hooks and remove HL1 Board

Rear Cover

Bezel

3

KLV-32L400A/37L400A

1

HL1 Board

HL1 Block Assembly

2

12

1-3. UM BOARD AND JACK HOLDER REMOVAL

1

Remove 1 screw

2

Disconnect 1 connector

3

Disconnect 1 wire terminal

4

Remove 2 screws

Bezel

1-4. BG2A BOARD AND RF BRACKET REMOVAL

KLV-32L400A/37L400A

Side Jack Holder

1

2

UM Board

3

4

1

Disconnect 7 connectors

2

Remove 6 screws

3

Remove 1 Hex nut

4

Remove 2 screws

Main Bracket

RF Bracket

4

1

2

3

BG2A Board

KLV-32L400A/37L400A

37L400A-RF Bracket
Mount Position

32L400A-RF Bracket
Mount Position

RF BRACKET MOUNT POSITIONS AND ORIENTATIONS

13

1-5. G BRACKET AND GM BOARD REMOVAL

1

Disconnect 3 connectors (KLV-32L400A ONLY)

2

Remove 3 screws (KLV-32L400A ONLY)

3

Remove 2 screws (KLV-37L400A ONLY)

4

Remove 1 screw (KLV-37L400A ONLY)

5

Remove 3 screws (KLV-37L400A ONLY)

6

Disconnect 4 connectors (KLV-37L400A ONLY)

7

Remove 1 screw (KLV-37L400A ONLY)

Top Bracket (R)

KLV-32L400A/37L400A

G1 Bracket

G1M Board

2

1

KLV-32L400A

G5

Bracket

G5M Board

3

7

6

KLV-37L400A

5

4

KLV-32L400A/37L400A

14

KLV-32L400A/37L400A

1-6. VESA ARMS, UNDER COVER AND TABLE-TOP STAND REMOVAL (KLV-32L400A ONLY)

1

Remove 2 screws from bottom of VESA Arms

2

Remove 3 screws

3

Remove 2 screws

1

VESA Arms

Top Brackets

Table-Top Stand Assembly

2

3

Under Cover

Bottom Bracket

KLV-32L400A/37L400A

15

KLV-32L400A/37L400A

1-7. VESA ARMS, UNDER COVER AND TABLE-TOP STAND REMOVAL (KLV-37L400A ONLY)

1

Remove 2 screws from bottom of VESA Arms

2

Remove 2 screws

3

Remove 4 screws

VESA Arms

1

Under Cover

2

Top Brackets

1-8. SPEAKER, LIGHT GUIDE AND HL5 BOARD REMOVAL

1

Slide out Speakers from Bezel

2

Disconnect one connector

3

Remove 2 screws

Table-Top Stand Assembly

3

KLV-32L400A/37L400A

1

Speakers

2

1

3

HL5 Board

Light Guide

16

1-9. BRACKETS REMOVAL (KLV-32L400A ONLY)

KLV-32L400A/37L400A

1

Remove 4 screws

2

Remove 4 screws

3

Remove 2 screws

4

Remove 2 screws

5

Remove 1 screw

6

Remove 1 screw

7

Remove 2 screws

Bottom Shield

7

6

Top Bracket (L)

Top Bracket (R)

1

1-10. BRACKET REMOVAL (KLV-37L400A ONLY)

2

3

Bottom Bracket

4

5

1

Remove 1 screw from top of both Top Brackets

2

Remove 1 screw from top of both Top Brackets

3

Remove 1 screw from top of both Top Brackets

4

Remove 2 screws

5

Remove 4 screws

6

Remove 2 screws from Bottom Bracket

7

Remove 1 screw from both Frame Brackets

8

Remove 2 screws from both Frame Brackets

9

Remove 2 screws from Bottom Bracket

Support Stay

Top Bracket (L)

Bottom Shield

2

1

5

6

4

3

3

7

8

Frame Bracket

9

Bottom Bracket

KLV-32L400A/37L400A

1

2

Top Bracket (R)

17

KLV-32L400A/37L400A

1-11. LCD PANEL REMOVAL

1

Remove 2 screws (KLV-32L400A ONLY)

2

Remove 1 screw (KLV-32L400A ONLY)

3

Disconnect 1 connector

4

Remove 2 screws from both sides of Stays

(KLV-37L400A ONLY)

1-12. INVERTER BOARD REMOVAL

1

Remove 6 screws from cover

2

Disconnect 7 connectors from board (KVL-32L400A ONLY)

Disconnect 8 connectors from board (KVL-37L400A ONLY)

Side Stay

1

4

2

3

LCD Panel

Side Stay

4

Bezel

KLV-32L400A/37L400A

SHIELD REMOVAL

2

Balancer Board Connectors

REMOVE SCREWS

SECURING

SHIELD

CAUTION!

Disconnect the

1

REMOVE

CONNECTOR AND

PULL BOARD TO

THE RIGHT

18

SECTION 2: SERVICE ADJUSTMENTS

V

KLV-32L400A/37L400A

2-1. USING THE REMOTE COMMANDER

FOR ELECTRICAL ADJUSTMENTS

To adjust various set features, use the Remote Commander to put the
set into service mode to display the service menus and categories.

2-2. ACCESSING SERVICE ADJUSTMENT

MODE

1. TV must be in standby mode. (Power off).

2. Press the following arrows on the Remote Commander within a
second of each other:

DISPLAY

Channel 5 Volume +

DISPLAY

POWER

POWER

.

Onscreen cursor
and select arrow

2-3. VIEWING THE SERVICE MENUS

Use the Remote Commander to view the BE Service Menu options.

1. To display the Service Menu that contains the category you
want to adjust, press the

MAIN VER. 1000
BOOT VER. 1000
PACK VER. 1000
CHECK SUM E918
NVM VER. 1025
USB VER. 0000
ETI1 24h
ETI2 24h

R_DRIVE 256
G_DRIVE 256
B_DRIVE 256
R_BKG 512
G_BKG 512
B_BKG 512
COLOR SAVE

or arrow on the Remote Commander.

TV

5

VOLUME+

MENU

RM-YA008

T

TEST RESET
AGING MODE Off
AUTO SHUT-OFF On
ETI CLEAR 1
ETI CLEAR 2
INFORMATION RESET
SOUND MUTE On
PRODUCTION 111111111
POWER SAVING On
HPD_EXTRA_TIME 0

The fi rst service menu (TV) displays.

KLV-32L400A/37L400A

19

2-4. CHANGING SERVICE DATA

1. Use the or arrows to select the Adjustment Item you want to change

TV

R_DRIVE 256
G_DRIVE 256
B_DRIVE 256
R_BKG 512
G_BKG 512
B_BKG 512
COLOR SAVE

2. To change the data value:

a. To increase the data value, press the arrow.

b. To decrease the data value, press the arrow.

3. To save the data value changes, press to select COLOR SAVE , then
press

button.

2-4-1. EXITING SERVICE MODE

KLV-32L400A/37L400A

After completing the changes, exit service mode.

4. To exit service mode, turn the power off by pressing

POWER

.

2-5. VERIFYING SERVICE DATA CHANGES

1. After completing all adjustments turn the set off with the Remote
Commander and then proceed to the next step.

2. Press the following arrows on the Remote Commander within a second
of each other:

DISPLAY

3. To verify the changes repeat step 1 of 2-4. Changing Service Data.

4. To exit service mode, turn the power off by pressing

Channel 5 Volume +

POWER

POWER

.

.

KLV-32L400A/37L400A

20

3-1. CIRCUIT BOARDS LOCATION

KLV-32L400A/37L400A

SECTION 3: DIAGRAMS

BG2A BOARD

UM BOARD

3-2. PRINTED WIRING

BOARDS AND

SCHEMATIC DIAGRAMS INFORMATION

All capacitors are in μF unless otherwise noted. pF : μμF 50WV or
less are not indicated except for electrolytics and tantalums.

All electrolytics are in 50V unless otherwise specifi ed.

All resistors are in ohms. kΩ=1000Ω, MΩ=1000kΩ

Indication of resistance, which does not have one for rating
electrical power, is as follows: Pitch : 5mm
Rating electrical power :

1

/

W in resistance, 1/

4

W and 1/

10

W in chip resistance.

16

: nonfl ammable resistor

: fusible resistor

: internal component

: panel designation and adjustment for repair

: earth ground

: earth-chassis

All variable and adjustable resistors have characteristic curve B,
unless otherwise noted.

Readings are taken with a color-bar signal input.

Readings are taken with a 10MΩ digital multimeter.

Voltages are DC with respect to ground unless otherwise noted.

Voltage variations may be noted due to normal production
tolerances.

1

/

W

4

HL1 BOARD

G1M BOARD (KLV-32L400A ONLY)
G5M BOARD (KLV-37L400A ONLY)

HL5 BOARD

All voltages are in V.

S : Measurement impossibility.

: B+line.

: B-line. (Actual measured value may be different).

: signal path. (RF)

Circled numbers are waveform references.

The components identifi ed by shading and ! symbol are critical for safety. Replace
only with part number specifi ed.

The symbol indicates a fast operating fuse and is displayed on the component
side of the board. Replace only with fuse of the same rating as marked.

NOTE: The components identifi ed by a red outline and a mark contain confi dential
information. Specifi c instructions must be adhered to whenever these components
are repaired and/or replaced.
See Appendix A: Encryption Key Components in the back of this manual.

KLV-32L400A/37L400A

21

KLV-32L400A/37L400A

REFERENCE INFORMATION

RESISTOR
: RN METAL FILM
: RC SOLID
: FPRD NONFLAMMABLE CARBON
: FUSE NONFLAMMABLE FUSIBLE
: RW NONFLAMMABLE WIREWOUND
: RS NONFLAMMABLE METAL OXIDE
: RB NONFLAMMABLE CEMENT
: ADJUSTMENT RESISTOR

COIL
: LF-8L MICRO INDUCTOR

CAPACITOR
: TA TANTALUM
: PS STYROL
: PP POLYPROPYLENE
: PT MYLAR
: MPS METALIZED POLYESTER
: MPP METALIZED POLYPROPYLENE
: ALB BIPOLAR
: ALT HIGH TEMPERATURE
: ALR HIGH RIPPLE

Terminal name of semiconductors in silk screen
printed circuit ( )

Device Printed symbol Terminal name

Transistor

1

Transistor

2

3

Diode

4

Diode

Diode

5

Diode

6

Diode

7

8

Diode

Diode

9

Diode

0

Diode

!¡

Diode

!™

Transistor

!£

(FET)
Transistor

!¢

(FET)
Transistor

!?

(FET)

Transistor

!§

Transistor

!¶

Transistor

!•

Transistor

!ª

Transistor

@º

Transistor

@¡

Transistor

@™

Transistor

@£

Discrete semiconductot

–

(Chip semiconductors that are not actually used are included.)

*

Collector

Base

Collector

Base

Cathode

Cathode

Anode

Cathode

Anode

Common

Anode

Common

Anode Cathode

Common

Anode

Common

Anode Anode

Common

Cathode

Common

Cathode

Anode
Anode

Cathode

Drain

Drain

B1 E1

C2

B2 C1E2

B2 E2

C1

B1 C2

E1

B2 E2

C1

B1 C2E1

B2 E2

C1

B1 C2E1

E2

B1 E1

C2

(B2)

E1

B1
C1

(B2)

E1

E2
C2

Emitter

Emitter

Anode

(NC)

(NC)

Cathode

Anode

Cathode

Cathode

Cathode
Anode
Anode

Source
Gate

Source
Gate

Source
Drain
Gate

Emitter
Collector
Base

C1(B2)

E2

C2

B1
C1

Circuit

D

G

D

S

B1

B1

B1

B1

B1

B1

D

G

S

S

D

G

C1

E1

C1

E1

E1

C1

E2

C1

C1

G

S

C2

B2

E2

C2

B2

E2

E2

B2

C2

C2C1(B2)

E2
E2E1(B2)

C2
C2E1(B2)

C2

Ver.1.6

KLV-32L400A/37L400A

22

3-3. BLOCK DIAGRAM

KLV-32L400A/37L400A

KLV-32L400A/37L400A

23

3-4. SCHEMATICS AND SUPPORTING INFORMATION

BG2A BOARD SCHEMATIC DIAGRAM (1 OF 8)

1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 |

A

—

B

—

KLV-32L400A/37L400A

C

—

D

—

E

—

F

—

G

—

H

—

I

—

J

—

K

—

L

—

M

—

VideoInput1

VideoInput3

REF.1000~1099

ComponentInput1

ComponentInput2

REF.1100~1199

VD1005

OLD GND_A

34

12

VD1001

J1000

GND

OLD GND_A

GRN

1

2

BLU

3

4

RED

5

6

WHT

7

8

RED

9

10

GRN

11

12

BLU

13

14

RED

15

16

WHT

17

18

RED

19

20

J1101

GND

OLD GND_T OLDGND_A

GS

VD1002

GND

VD1107

R1100

220

1/10W

R1103

220

VD1108VD1109

R1002

220
1/10W
RN-CP

0.5%

GND

OLD GND_T

R1104

220
1/10W
RN-CP

0.5%
1608

R1109

220

1/10W

RN-CP

0.5%

1608

R1116

220
1/10W
RN-CP

0.5%
1608

VD1106

GND

R1007

1/10W
RN-CP

R1120

1/10W
RN-CP

0.5%
1608

R1105

220

220

0.5%

220

R1004

220

1/10W

RN-CP

0.5%

R1115

220

1/10W

R1118

220
1/10W
RN-CP

0.5%
1608

R1126

220
1/10W
RN-CP

0.5%
1608

R1117

R1008

1M

1/16W

CHIP

1005

R1009

1M

1/16W

CHIP

220

R1018

220
1/10W
RN-CP

0.5%

R1119

R1013

1/10W

RN-CP

C1004

1608

R1128

220
1/10W
RN-CP

0.5%
1608

1/10W
RN-CP

R1110

1M

1/16W

CHIP

R1106

1M

1/16W

CHIP

220

R1123

R1107

1M

1/16W

CHIP

R1108

1M

1/16W

CHIP

75

1

10V

X7R

R1014

1/16W

CHIP

R1015

1/16W

CHIP

R1130

220

0.5%
1608

R1127

220

R1005

220
1/10W
RN-CP

0.5%

VD1006

2.2k

2.2k

220

R1028

1/16W

CHIP

R1020

1/10W
RN-CP

R1131

1/10W
RN-CP

0.5%

R1111

2.2k

1/16W

CHIP

R1112

2.2k

1/16W

CHIP

R1113

2.2k

1/16W

CHIP

R1114

2.2k

1/16W

CHIP

1k

220

0.5%

220

1608

VD1113

VD1114

R1129

VD1115

VD1110

VD1111

GND

OLD GND_A

C1104

0.001

C1105

0.001

220

GND

C1106

0.001

C1107

0.001

C1006

0.001

C1007

0.001

VD1112

OLD GND_A

C1013

0.01
25V
X7R

1005

C1014

0.01
25V
X7R
1005

C1015

25V
X7R

2012

C1016

25V
X7R

2012

C1020

0.01
25V
X7R
1005

1

1

R1026

100

1/16W

CHIP

D1000

MAZ8100G0LS0

R1027

100

1/16W

CHIP

D1001

MAZ8100G0LS0

R1030

100

1/16W

CHIP

D1008

MAZ8100G0LS0

C1108

1

25V
X7R
2012

C1109

1

25V
X7R
2012

GND

OLD GND_A

R1135

22

1/16W

CHIP

5%

1005

R1137

22

1/16W

CHIP

5%

1005

R1139

22

1/16W

CHIP

5%

1005

R1134

22

1/16W

CHIP

R1136

22

R1138

22

C1110

1
25V
X7R

2012

C1111

1
25V

X7R
2012

R1029

1k

1/16W

CHIP

D1002

MAZ8100G0LS0

A_V1_IN_SSW

A_V1_IN_Y

A_V1_IN_C

A_V1_IN_S2SW

A_V1_IN_V

A_V1_IN_AU_L

A_V1_IN_AU_R

D1_IN_CB,D1_IN_CR,D1_IN_Y

D1_IN_Y

D1_IN_CB

D1_IN_CR

A_D1_IN_AU_L,A_D1_IN_AU_R

A_D1_IN_AU_L

A_D1_IN_AU_R

D2_IN_CB,D2_IN_CR,D2_IN_Y

A_D2_IN_AU_L,A_D2_IN_AU_R

A_D2_IN_AU_L

A_D2_IN_AU_R

A_V1_IN_C,A_V1_IN_S2SW,A_V1_IN_SSW,A_V1_IN_V,A_V1_IN_Y

A_V1_IN_AU_L,A_V1_IN_AU_R

A_V2_IN_V_UM

GND

R1738

220

R1737

220

R1736

220

C1729

0.01

R1735

100

A_V2_IN_V

A_V2_IN_V

A_AUOUT_AU_L

A_AUOUT_AU_R

R1700

220k
1/16W
CHIP

1005

R1701

220k

1/16W

CHIP

5%

1005

Opt/Audio Output

GND

J1710

J1720

VD1710

GND

OLD GND_T

L

R

OLD GND_T

L

R

J1701

VD1721

GND

VD1711

OLD GND_D

GND

VD1720

OLD GND_D

GND

A_V2_IN_AU_L,A_V2_IN_AU_R

A_HP_OUT_AU_R

A_V2_IN_V_UM

R1710

1M

1/16W

R1721

1M

1/16W

CHIP

1005

A_HP_OUT_AU_L

HP_DET

REF.1700~1799

R1712

2.2k

1/16W

CHIP

R1713

2.2k

1/16W

CHIP

R1711

1M

C1712

C1713

1000p

1000p

JL1403

JL1405

JL1406

C1724

25V
X7R
2012

C1725

25V
X7R
2012

1

A_V2_IN_AU_L

A_V2_IN_AU_R

JL1413

R1720

1M

1/16W

CHIP
1005

R1722

2.2k

1/16W

CHIP

R1723

2.2k

1/16W

CHIP

*R1410

0

C1723

0.001

1005

*R1409

0

C1722

0.001
50V
X7R

1005

50V
X7R

*R1403

0

JL1404

*R1408

0

1

C1715

25V
X7R
2012

1

C1714

1
25V
X7R
2012

*R1402

0

0uH * FB14 00

*FB1401

0uH

*R1406

0

JL1402

PC_IN_L

PC_IN_R

DVI_IN_L

DVI_IN_R

GND_HP

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

V2_IN_AU_L

AU_IN_GND

GND

V2_IN_AU_R

HP_OUT_AU_L

AU_IN_GND

GND

HP_OUT_AU_R

HP_IN_GND

HP_DET

GND

GND

V2_IN_V

GND

*CN1400

TO UM BOARD

R1702

C1702

470

0.001

1/16W

50V

CHIP

X7R

5%

5%

R1703

470

1/16W

CHIP

5%

1005

C1703

0.001

1005

50V
X7R

OLD GND_A

VD1702

VD1703

OLD GND_T

PC_LR IN

AUDIO IN

*R1407

N

—

BG2A 1/8
I/O

GND GND

0

OLD GND_AOLD GND_T

O

—

A-1541-632-A <WAX3B> BG2A-P1

P

KLV-32L400A/37L400A 24