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TX-LR26X10

29

Set A-Board to a dummy set and check the satisfaction with the specified voltage as following table.

Set P-Board to a dummy set and check the satisfaction with the specified voltage as following table.

1. Add a regulated voltage to following TP. 

2. Turn on a MAIN_SW.
3. SUB_ON (TP2767) “High” / Add a regulated voltage to following TP after SUB_ON (TP2767) becomes “High”.

Clearance
x, y : +/-0.005 in Cool Colour Balance, +/-0.010 in Warm/Normal Colour Balance

Power Supply Name

Measurement Point

Specification (V)

SUB1.2V

TP5602

1.22 - 1.32

SUB1.8V

TP5601

1.78 - 1.91

SUB3.3V

TP5600

3.21 - 3.45

SUB9V

TP5409

8.76 - 9.45

SUB5V

TP5405

4.82 - 5.18

BT30V

TP5482

29.3 - 31.5

Power Supply Name

Measurement Point

Normal Condition (V)

Standby Condition (V)

24V

TPP009 (TNP4G459)

24.0 ± 1.2

no care

12V

TPP033

12.0 + 0.6 / -0.45

< 1.0

Audio Vcc

TPP028

16.4 ± 0.7

< 3.0

STBY_6V

TPP012 (TNP4G459)

5.8 ± 0.3

5.8 ± 0.3

Power Supply Name

TP No.

Voltage (V)

5VS

TP2773

5.6 +/- 2%

SUB_TNR_6V

TP2770

5.6 +/- 2%

GND

TP2781

0

TV_SOS

TP5481

0

INVERTER_SOS

TP2761

0

Power Supply Name

TP No.

Voltage (V)

P17V

TP2777

17 +/- 2%

SUB_F_12V

TP2782

12 +/- 2%

Ambient Temp.

Colour Balance

White

Gray

x

y

Y (cd/m2)

x

y

Y (cd/m2)

22.5 - 27.5 deg

Cool

0.271

0.275

>300

0.271

0.275

don’t care

Normal

0.284

0.297

0.284

0.297

Warm

0.314

0.324

>200

0.314

0.324

TX-LR26X10

30

Ref. No

Location

Ref. No

Location

Ref. No

Location

Ref. No

Location

IC1100

K4

IC5441

M9

IC8404

J4

D3015

D7

IC1101

L3

IC5480

J5

IC8405

J3

D4513

H7

IC2750

L2

IC5600

B5

IC8408

J3

D4617

L8

IC2901

K10

IC5601

B5

IC8409

L2

IC2902

K9

IC8004

D4

IC8410

J2

IC3001

D8

IC8301

K8

IC8554

G3

IC4513

G7

IC8302

L8

IC8601

H5

IC5405

B4

IC8401

H2

1

A

B

C

D

E

F

G

H

I

J

K

L

2

3

4

5

6

7

8

9

10

M

TX-LR26X10

31

Ref. No

Location

Ref. No

Location

Ref. No

Location

Ref. No

Location

IC2008

E4

IC4512

G7

IC8002

C8

D3015

E5

IC2301

A4

IC5409

B5

IC8003

D9

IC4510

F5

IC5451

B9

IC8403

F10

IC4511

G7

IC8001

E9

IC8411

L9

1

A

B

C

D

E

F

G

H

I

J

K

L

2

3

4

5

6

7

8

9

10

M

TX-LR26X10

32

1. Resistor

Unit of resistance is OHM [

Ω] (K = 1 000, M = 1 000 000).

2. Capacitor

Unit of capacitance is 

μF unless otherwise noted.

3. Coil

Unit of inductance is 

μF unless otherwise noted.

4. Test Point

: Test Point position

5. Earth Symbol

: Chassis Earth (Cold)

: Line Earth (Hot)

6. Voltage Measurement

Voltage is measured using DC voltmeter.
Conditions of the measurement are the following :
Power Source....................AC AUTO 110-240 V, 50/60 Hz
Receiving Signal................Colour Bar signal (RF)
All customer’s controls.......Maximum positions

7. Number in red circle indicates waveform number.

(See waveform pattern table)

8. When an arrow mark (

) is found, connection is easily found from the direction of the arrow.

9. Indicates the major signal flow: Video 

 Audio 

10. This schematic diagram is the latest at the time of printing and subject to change without notice.

1. The Power Circuit contains a circuit area which uses a separate power supply to isolate the earth connection.

The circuit is defined by HOT and COLD indications in the schematic diagram. Take the following precautions:
All circuits, except the Power Circuit are cold.
Precautions:

a. Do not touch the hot part or the hot and cold parts at the same time or you may be shocked.
b. Do not short-circuit the hot and cold circuits or a fuse may blow and parts may break.

c. Do not connect an instrument such as an oscilloscope to the hot and cold circuits simultaneously or a fuse may blow.

Connect the earth of instruments to the earth connection of the circuit being measured.

d. Make sure to disconnect the power plug before removing the chassis.