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KDL-32/40S2000 (K)     5

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).

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).

0.15 µF

Trouble Light

AC Outlet Box

Ohmmeter

Cold-water Pipe

KDL-32/40S2000 (K)     6

1-1. REAR CABINET ASSY REMOVAL ................... 1-1

1-2. STAND ASSY REMOVAL ................................... 1-2

1-3. H1U BOARD REMOVAL .................................... 1-3

1-4. H2U BOARD REMOVAL .................................... 1-3

1-5. G1 AND G2 BOARDS REMOVAL ..................... 1-4

1-6. DTT SHIELD ......................................................... 1-4

1-7. QT BOARD REMOVAL ....................................... 1-5

1-8. AU BOARD REMOVAL ...................................... 1-5

1-9. BU AND QS BOARDS REMOVAL .................... 1-6

1-10. AC INLET REMOVAL ......................................... 1-7

1-11. SPEAKER AND H3U BOARD REMOVAL ........ 1-7

1-12. LCD PANEL REMOVAL ..................................... 1-8

(1)

KDL-32S2000 .................................................. 1-8

(2)

KDL-40S2000 .................................................. 1-9

2-1. REMOTE ADJUSTMENT BUTTONS AND

INDICATORS ........................................................ 2-1

2-2. ACCESSING SERVICE ADJUSTMENTS .......... 2-1

2-2-1.

ACCESSING THE DIGITAL SERVICE

ADJUSTMENT MENUS ................................ 2-1

2-2-2.

VIEWING THE DIGITAL MODULE BOX

(Q-BOX) SERVICE ITEMS ........................... 2-2

2-2-3.

ACCESSING THE ANALOG SERVICE

ADJUSTMENT MENUS ................................ 2-2

2-3. RESETTING THE USER MENU-FACTORY

RESET .................................................................... 2-3

2-4. AGING MODE ...................................................... 2-3

2-5. WHITE BALANCE ADJUSTMENT .................... 2-4

3-1. BLOCK DIAGRAMS ............................................ 3-1

(1)

QS and QT Boards ........................................... 3-1

(2)

AU and H2U Boards ........................................ 3-2

(3)

BU, H1U and H3U Boards .............................. 3-3

(4)

G1 Board (KDL-32S2000 ONLY) .................. 3-4

(5)

G2 Board (KDL-40S2000 ONLY) .................. 3-5

3-2. FRAME DIAGRAMS ............................................ 3-6

(1)

KDL-32S2000 .................................................. 3-6

(2)

KDL-40S2000 .................................................. 3-7

3-3. CIRCUIT BOARDS LOCATION ......................... 3-8

3-4. SCHEMATIC  DIAGRAMS  AND  PRINTED

WIRING  BOARDS ............................................... 3-8

(1)

Schematic Diagrams of AU Board ................. 3-9

(2)

Schematic Diagrams of BU Board ............... 3-13

(3)

Schematic Diagram of G1 Board

(KDL-32S2000 ONLY) ................................. 3-22

(4)

Schematic Diagram of G2 Board

(KDL-40S2000 ONLY) ................................ 3-24

(5)

Schematic Diagram of H1U Board ............... 3-26

(6)

Schematic Diagram of H2U Board ............... 3-27

(7)

Schematic Diagram of H3U Board ............... 3-28

(8)

Schematic Diagrams of QS Board ................. 3-29

(9)

Schematic Diagram of QT Board .................. 3-35

3-5. SEMICONDUCTORS ......................................... 3-37

4-1. REAR CABINET ASSY AND STAND ASSY .... 4-2

4-2. FRAME AND COVER .......................................... 4-3

4-3. CHASSIS-1 ............................................................ 4-4

4-4. CHASSIS-2 ............................................................ 4-5

4-5. H3 BOARD AND SPEAKER ............................... 4-6

4-6. BEZEL ASSY AND LCD PANEL ....................... 4-7

4-7. PACKING MATERIALS (KDL-32S2000) .......... 4-8

4-8. PACKING MATERIALS (KDL-40S2000) .......... 4-9

KDL-32/40S2000 (K)     7

f

LED

LED Type

Description

*Light green when the TV set is on

POWER LED

Red/Green LED

*Functions as failure indicator
*Blinks green in aging mode

TIMER LED

Red LED

Lights when timer is set

PIC OFF LED

Green LED

Lights when power saving setting is set to picture off (See Instruction Manual)

KDL-32/40S2000 (K)     8

SATAUS

POWER LED

TIMER LED/

STANDBY LED

REMARKS

PICTURE OFF LED

Power off using the power switch or remote
control.

Power Off

Off

Off

Off

NOTE: Standby state does not exist in this model;
however, the microcomputer does enter into sleep
mode.

Power Off

Lights Green

Off

Off

Microcomputer working normally.

Failure

Blinks Red

Off

Off

Failue causes are classified by the number of time
the red light blinks.

Aging

Blinks Green

Off

Off

Aging mode is classified by a blinking green light.

Picture Off

Lights Green

Lights Green

Off

No display (black screen).

SLEEP TIMER

Lights Green

Lights Orange

Off

When SLEEP TIMER is set during power on.

Lights Green

Lights Green

Off

When SLEEP TIMER is set in Picture Off mode.

Off

Lights Orange

Off

When ON TIMER is set and power is off.

ON TIMER

Lights Green

Lights Orange

Off

When ON TIMER is set and power is on.

Lights Green

Lights Green

Off

When ON TIMER is set in Picture Off mode.

PC STANDBY

Off

Off

Lights Red

PC STANDBY/

Off

Lights Orange

Lights Red

TIMER ON

The units manual contain a self-diagnosis function. If an error occurs, the POWER LED will automatically begin to flash. The number of
times the LED flashes translates to a probable source of the problem. A definition of POWER LED flash indicators is listed in the
instruction manual for the user’s knowledge and reference. If an error symptom is difficult to reproduced use the Remote Commander to
display the record that is stored at the internal NVM to specify the cause of failure.

When an error occures, the POWER 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. If the errors occur simultaneously, the one that corresponds to the
fewest flashes is identified first. Results for all of the following diagnostic items are displayed on screen. No error has occurred if the
screen display a “0”.

Number of Times

Monitoring Item

POWER LED Blinks

1 Time

Abnormal AU Power Voltage (DCALERT 3)

2 Times

Abnormal D5V/A9V Power Voltage (DCALERT 2)

3 Times

Abnormal Panel Voltage (DCALERT 1)

4 Times

Backlight Failure

5 Times

Abnormal Main Power Voltage

6 Times

Abnormal Speaker Voltage

7 Times

Internal Temperature Rise (mainly on the panel side)

8 Times

IC5000