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Note: Lead is listed as (Pb) in the periodic table of elements.

 

In the information below, Pb will refer to Lead solder, and PbF will refer to Lead Free Solder.

 

The Lead Free Solder used in our manufacturing process and discussed below is (Sn+Ag+Cu).

 

That is Tin (Sn), Silver (Ag) and Copper (Cu) although other types are available.

 

This model uses Pb Free solder in it’s manufacture due to environmental conservation issues. For service and repair work,
we’d suggest the use of Pb free solder as well, although Pb solder may be used.
PCBs manufactured using lead free solder will have the PbF within a leaf Symbol 

             stamped on the back of PCB.

• 

Pb free solder has a higher melting point than standard solder. Typically the melting point is 50 ~ 70 °F (30~40°C)
higher. Please use a high temperature soldering iron and set it to 700 ± 20 °F (370 ± 10 °C).

• 

Pb free solder will tend to splash when heated too high (about 1100 °F or 600 °C).
If you must use Pb solder, please completely remove all of the Pb free solder on the pins or solder area before
applying Pb solder. If this is not practical, be sure to heat the Pb free solder until it melts, before applying Pb solder.

• 

After applying PbF solder to double layered boards, please check the component side for excess solder which may
flow onto the opposite side. (see Fig.3)

There are several kinds of Pb free solder available for purchase. This product uses Sn+Ag+Cu (tin, silver, copper) solder.
However, Sn+Cu (tin, copper), Sn+Zn+Bi (tin, zinc, bismuth) solder can also be used. (see Fig.4)

Lay the main unit face down. (see Fig.5)

Remove the 2 fixing screws and hinge cover. (see Fig.6)

Remove the 4 fixing screws and the pedestal assembly. (see Fig.7)

Remove the 14 fixing screws. (see Fig.8)

Remove the back cover.

Carefully remove the backcover and disconnect two AV3 wires. (see Fig.9)

Board Name

Function

A-Board

Main Board

B-Board

Tuner

H-Board

AV3 Terminal

Key Control

Key Control

K-Board

Mains Input, Power Switch

P-Board

Power Supply

V-Board

Remote Receiver, LED IR, Bats

TP004

C870, + pin

33V 

± 3V

TP005

Connector A7, pin 22

15V

TP006

C1500, + pin

8V 

± 0,3V

TP008

C1700, + pin

5V 

± 0,2V

TP010

C890 - R898

3,3V 

± 0,1V

TP012

Q878, pin 1

3,3V 

± 0,1V

TP017

Connector A7, pin 16

10,5V 

÷ 16V

TP018

IC252, pin 5

10,5V 

÷ 16V

TP019

IC862, pin 1

24V

TP023

Connector A7, pin 12

24V

TP009

C883, + pin

1,8V 

± 0,1V

TP013

C868, + pin

3,3V 

± 0,1V

TP001

Connector P2, pin 20

15V 

± 2V

TP002

Connector P2, pin 8

24V 

± 2V

TP003

Connector P2, pin 9

24V 

± 1V

TP002

Connector P2, pin 8

24V

TP003

Connector P2, pin 9

<2V

P-BOARD

V-BOARD

K-BOARD

A-BOARD

B-BOARD

KEY CONTROL

H-BOARD

Self-check is used to automatically check the bus lines and hexadecimal code of the TV set. To enter Self-Check mode, keep
pressing the STATUS        button on the remote control and press the down (-/v) button on the TV set. To exit Self Check,
switch off the TV set at the power button.

Display

Ref. No.

Description

P.C.B.

E2

IC1120

EAROM

A-Board

DPS

IC1501

DISPLAY PROCESSOR AND SCALER

A-Board

VSP

IC1501

VIDEOSIGNAL PROCESSOR

A-Board

AVSW

IC1501

AV SWITCH

A-Board

TUN

TNR001

TUNER

B-Board

MSP

IC1501

MULTISTANDART SOUND PROCESSOR

A-Board

DPL

---

DOLBY PROLOGIC PROCESSOR

---

MAS

---

MPEG1 AUDIO PROCESSOR

---

If the CCU ports have been checked and found to be incorrect or not located then " - - " will appear in place of "O.K.".

E2

O.K.

DPS

O.K.

VSP

O.K.

AVSW

O.K.

TUN

O.K.

MSP

O.K.

DPL

---

MAS

---

OPTION 1

0F

   0F

OPTION 2

00

   00

OPTION 3

B9

   B9

OPTION 4

11

   11

OPTION 5

00

   00

OPTION 6

15

   15

OPTION 7

FD

   FD

OPTION 8

D2

   52

OPTION 9

00

   00

OPTION 10

00

   00

OPTION 11

13

   13

OPTION 12

20

   20

OPTION 13

38

   38

CHECK

28

   A8