Haier NS-F27C Service Manual

COLOUR TELEVISION

SERVICE MANUAL

Models

NS-F27C Canada

 Features

 DIGITAL IC

BUS CONTROL

 AUTO SEARCH TUNING, 181PROGRAMS STORED  FULL INFRARED REMOTE CONTROL  MULTI-PICTURE MODES SELECTION  MULTI-FUNCTION TIMER, APPOINTING PROGRAMME

Serial Number: 0010540329 Version:00.00

Edition: 2007-04-06

COLOR TELEVISION Model:NS-F27C

1. Product code illumination and series introduction

29 F A1

PUREFLAT CRT

CRT catercorner 29

Appearance serial

Product code illumination and series introduction

Insignia NS-F27C 27" Flat Tube TV

www.insignia-products.com

Remote

Installing remote control batteries

To install batteries in the remote control:

1 Remove the battery cover. 2 Insert two AA batteries into the battery

compartment. Make sure that the + and – symbols on the batteries match the + and – marks inside the battery compartment.

3 Replace the battery cover.

No. Button Description

1 INPUT Press to select TV, AV1, AV2,

S-Video, or Component input.

2 DISPLAY Press to display channel

information.

3 MTS/SAP Press to select MTS, SAP, or

Mono audio.

4 Number buttons Press to enter channel

numbers

5 RECALL Press to return to the

previous channel or source.

6 PICTURE Press to select Personal,

Mild, Standard, or Vivid picture mode.

7 MENU Press to open the on-screen

display (OSD).

8 VOL+/VOL– Press to increase o r

decrease the volume.

9 SCAN Press to scan through

memorized TV channels.

10 SLEEP Press to set the sleep timer.

POWER

Press to turn your TV on and off or to bring your TV out of standby mode.

INPUT

DISPLAY

POWER

ZOOM

MUTE

MTS/SAP

RECALL

PICTURE

CCD

AUDIO

VOL VOL

SCAN

EXIT

SLEEP

12 ZOOM Press to select Normal,

Enlarged, or 16:9 zoom mode.

13 MUTE Press to mute the sound.

Press again to restore the sound.

14 CCD Press to turn close captions

on or off.

15 AUDIO Press to select an audio

mode.

16 CH+/CH– Press to change to a channel

with a higher or lower number.

17 EXIT Press to turn off the channel

display and to exit system menus.

Warning

Do not throw the batteries into fire. Dispose of used batteries as hazardous waste.

Caution

Do not drop or disassemble the remote control. Do not get the remote control wet.

Important

If you insert the batteries incorrectly, you will not damage the remote control, but the remote control will not work.

Note

When the remote control will not be used for a long period of time or when the batteries are worn out, remove the batteries to prevent leakage.

No. Button Description

2. Remote controller

3. Specifications

Specificatio

NO. FUNCTION

Main IC

OM8378

CRT

Color system

NTSC

Audio system

NO.of channels

218

OSD language

E/F/S

PIC

Multi-picture modes

YES

AV stereo

YES

Super woofer

ＹＥＳ

Surrounding sound YES

Treble/bass boost

Left/right balancer

YES

NICAM

Multi-audio modes

YES

Tone adjuster

MTS/SAP

ＹＥＳ

AUDIO

Auto-volume leveling

ＹＥＳ

AV input

YES

AV output

YES

DVD terminal

YES

S-video jack

YES

Headphone socket

JIC

SCART socket

Digital curtain

Slow fading on & off

Semitransparent menu

ＹＥＳ　

Non-flshing channel changing

ZOOM

YES

16:9 mode

YES

Games

Calendar

YES

Child-lock

YES

Multi-functional lock

ＹＥＳ　

No-picture listening

Background light

Auto-timer on

YES

CCD

ＹＥＳ

SOFTWARE

V-CHIP

ＹＥＳ

NO. FUNCTION

NO. of built-in speakers

Audio output power(W)

5W+5W

Total power input

140

Voltage range

120V

Power frequency

50/60HZ

Time of sleep timer(MINS)

Net weight(KG)

Gross weight(KG)

Net dimension(MM)

Packaged dimension(MM)

Quantity for 20' container

Quantity for 40' container

PARAMETER

Quantiry for 40' high container

Acquired certificate

APPROVAL

Suitable market

SAFETY PRECAUTIONS

4.SAFETY PRECAUTIONS

INPORTANT SAFETY NOTICE

These parts are identified by many electrical and mechanical parts in this chassis have special safety-related characteristics.

It is essential that these special safety parts should be replaced with the same components as recommended in this manual to prevent X-RADIATION, Shock, Fire, or other Hazards.

Do not modify the original design without permission of the manufacturer.

General Guidance

An Isolation Transformer should always be used during the servicing of a receiver whose chassis is not isolated from the AC power line. Use a transformer of adequate power rating as this protects the technician from accidents that might result in personal injury caused by electrical shocks.

It will also protect the receiver and it’s components from being damaged by accidental shorts of the circuitry that might be inadvertently introduced during the service operation.

If any fuse (or Fusible Resistor) in this TV receiver is blown, replace it with a specified one.

When replacing a high wattage resistor (Oxide Metal Film Resistor, over 1W), keep the resistor 10mm away from PCB.

Keep wires away from high voltage or high temperature parts. Due to the high vacuum and large surface area of the picture tube, extreme care

should be taken in handling the Picture Tube. Do not lift the Picture Tube by its Neck. X-RAY Radiation

Warning:

The source of X-RAY RADIATION in this TV receiver is the High Voltage Section and the Picture Tube.

For continued X-RAY RADIATION protection, the replacement tube must be of the same type as specified in the Replacement Parts List.

Before returning the receiver to the customer, Always perform an AC leakage current check on the exposed metallic parts of the

cabinet, such as antennas, terminals, etc., to make sure that the set is safe to operate without any danger of electrical shock.

5.Warning and Cautions

1. When you clean the TV set, please pull out the power plug from AC outlet. Don't clean the cabinet and the screen w ith benz ene, pet rol and other chemicals .

4. To prevent the TV set from fi ring and elect ric shock, don't make the TV set rain or moisture.

In orde r t o prolong th e us i n g l ife of the TV set, please place it on a ventilated place.

5. Don't open the bac k cover, otherw ise it is poss ible to da mage the c ompon ents in the TV set an d harm you.

Don't place the

TV set in the sunshine or near heat source .

6. When the TV se t i s n't going to be used for long time or it is in thunder and lightening, please pull out the plug from AC outle t and the antenn a plug fro m the co ver of the TV set.

Warning and Cautions

Figure 1

Explanation on the display tube

Warning and Cautions

Generally, it is not needed to clean the tube surface. However, if necessary, its surface can be cleaned with a dry cotton cloth after cutting off the power. Don’t use any cleanser. If using hard cloth, the tube surface will be damaged.

CAUTION: Before servicing receivers covered by this service manual and its supplements and addenda, read and follow the SAFETY PRECAUTIONS.

NOTE: If unforeseen circumstances create conflict between the following servicing precautions and any of the safety precautions, always follow the safety precautions.

Remember : Safety First. General Servicing Precautions

1. Always unplug the receiver AC power cord from the AC power source before: a. Removing or reinstalling any component, circuit board module or any other

assembly of the receiver.

b. Disconnecting or reconnecting any receiver electrical plug or other electrical

connection.

c. Connecting a test substitute in parallel with an electrolytic capacitor in the

receiver. CAUTION: A wrong substitution part or incorrect installation polarity of

electrolytic capacitors may result in an explosion hazard.

d. Discharging the picture tube anode.

2. Test high voltage only by measuring it with an appropriate high voltage meter or

other voltage-measuring device (DVM, FETVOM, etc.) equipped with a suitable high voltage probe. Do not test high voltage by “drawing an arc”.

3. Discharge the picture tube anode only by (a) first connecting one end of an

insulated clip lead to the degaussing or kine aquadag grounding system shield at the point where the picture tube socket ground lead is connected, and then (b) touch the other end of the insulated clip lead to the picture tube anode button, using an insulating handle to avoid personal contact with high voltage.

4. Do not spray chemicals on or near this receiver or any of its assemblies.

5. Unless specified otherwise in this service manual, clean electrical contacts only by

applying the following mixture to the contacts with a pipe cleaner, cotton-tipped stick or comparable nonabrasive applicator; 10% (by volume) Acetone and 90% (by volume) isopropyl alcohol (90%-99% strength)

CAUTION: This is a flammable mixture. Unless specified otherwise in this service manual, lubrication of contacts is not

required.

6. Do not defeat any plug / socket B+ voltage interlocks with which receivers covered

by this service manual might be equipped.

Warning and Cautions

7. Do not apply AC power to this instrument and/or any of its electrical assemblies

unless all solid-state device heat sinks are correctly installed.

8. Always connect the test receiver ground lead to the receiver chassis ground before

connecting the test receiver positive lead. Always remove the test receiver ground lead last.

9. Use with this receiver only the test fixtures specified in this service manual.

CAUTION: Do not connect the test fixture ground strap to any heat sink in this receiver.

Electrostatically Sensitive (ES) Devices

Some semiconductor (solid state) devices can be damaged easily by static electricity. Such components are usually called Electrostatically Sensitive (ES) Devices. Examples of typical ES devices are integrated circuits and some field effect transistors and semiconductor “chip” components. The following techniques should be used to help reduce the incidence of component damage caused by static electricity.

1. Immediately before handling any semiconductor component or semiconductor-

equipped assembly, drain off any electrostatic charge on your body by touching a known earth ground. Alternatively, obtain and wear a commercially available discharging wrist strap device, which should be removed to prevent potential shock prior to applying power to the unit under test.

2. After removing an electrical assembly equipped with ES devices, place the

assembly on a conductive surface such as aluminum foil, to prevent electrostatic charge buildup or exposure of the assembly.

3. Use only a grounded-tip soldering iron to solder or unsolder ES devices.

4. Use only an anti-static type folder removal device. Some solder removal devices

not classified as “anti-static” can generate electrical charges sufficient to damage ES devices.

5. Do not use freon-propelled chemicals. These can generate electrical charges

sufficient to damage ES devices.

6. Do not remove a replacement ES device from its protective package until

immediately before you are ready to install it. (Most replacement ES devices are packaged with leads electrically shorted together by conductive foam, aluminum foil or comparable conductive material).

7. Immediately before removing the protective material from the leads of a

replacement ES device, touch the protective material to the chassis or circuit assembly into which the device will be installed.

CAUTION: Be sure no power is applied to the chassis or circuit, and observe all other safety precautions.

8. Minimize bodily motions when handling unpackaged replacement ES devices.

(Otherwise even some normally harmless motions such as mutual brushing of your clothes’ fabric or lifting of your foot from a carpeted floor might generate static electricity sufficient to damage an ES device.)

General Soldering Guidelines

1. Use a grounded-tip, low-wattage soldering iron and appropriate tip size and shape

that will maintain tip temperature within the range of 500

f to 600 of.

2. Use an appropriate gauge of RMA resin-core solder composed of 60 parts tin/40

parts lead.

3. Keep the soldering iron tip clean and well tinned.

4. Thoroughly clean the surfaces to be soldered. Use a mall wire bristle (0.5 inch, or

1.25cm) brush with a metal handle. Do not use freon-propelled spay-on cleaners.

5. Use the following unsoldering technique

a. Allow the soldering iron tip to reach normal temperature.(500

F to 600o F) b. Heating the component lead until the solder melts. c. Quickly draw the melted solder with an anti-static, suction-type solder removal

device with solder braid. CAUTION: Work quickly to avoid overheating the circuit board printed foil.

6. Use the following unsoldering technique a. Allow the soldering iron tip to reach normal temperature.(500

F to 600o F )

b. First, hold the soldering iron tip and solder the strand against the component

lead until the solder melts.

c. Quickly move the soldering iron tip to the junction of the component lead and

the printed circuit foil, and hold it there only until the solder flows onto and around both the component lead and the foil.

CAUTION: Work quickly to avoid overheating the circuit board printed foil.

d. Closely inspect the solder area and remove any excess or splashed solder

with a small wire-bristle brush.

Remove /Replacement

Some chassis circuit boards have slotted holes (oblong) through which the IC leads are inserted and then bent flat against the circuit foil. When holes are of slotted type, the following technique should be used to remove and replace the IC. When working with

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Haier NS-F27C Service Manual

Specifications and Main Features

Frequently Asked Questions

User Manual