Zenith Z42PX2D User Manual

SERVICE MANUAL

Product Type: PLASMA
Chassis: AF-05FC
Manual Series:
Manual Part #:
Model Line:
Product Year: 2005

Z42PX2D

Model Series:

CONTENTS

Description of Controls .................................................4

Specifications ..............................................................8

Adjustment Instructions ................................................9

Diagrams ...................................................................14

Parts List ...................................................................17

Schematics ....................................................................

Published Oct. 2003

by Technical Publications

LG Electronics USA, Inc.

201 James Record Road,

Huntsville, Alabama 35824-1513

Copyright © 2003 by Zenith Electronics Corporation

Printed in Korea

http//www.zenithservice.com

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IMPORTANT SAFETY NOTICE

This manual was prepared for use only by properly trained audio-visual service
technicians.

When servicing this product, under no circumstances should the original design
be modified or altered without permission from Zenith Electronics Corporation.
All components should be replaced only with types identical to those in the
original circuit and their physical location, wiring and lead dress must conform
to original layout upon completion of repairs.

CAUTION: Do not attempt to modify this product in any way.

Never perform customized installations without manufacturer’s
approval.
Unauthorized modifications will not only void the warranty, but may
lead to property damage or user injury.

Service work should be performed only after you are thoroughly familiar with
these safety checks and servicing guidelines.

GRAPHIC SYMBOLS

The exclamation point within an equilateral triangle is intended to
alert the service personnel to important safety information in the
service literature.

The lightning flash with arrowhead symbol within an equilateral
triangle is intended to alert the service personnel to the presence
of noninsulated “dangerous voltage” that may be of sufficient
magnitude to constitute a risk of electric shock.

The pictorial representation of a fuse and its rating within an
equilateral triangle is intended to convey to the service personnel
the following fuse replacement caution notice:
CAUTION: FOR CONTINUED PROTECTION AGAINST RISK
OF FIRE, REPLACE ALL FUSES WITH THE SAME TYPE AND
RATING AS MARKED NEAR EACH FUSE.

SERVICE INFORMATION

While servicing, use an isolation transformer for protection from AC line shock.
After the original service problem has been corrected, make a check of the
following:

FIRE AND SHOCK HAZARD

1. Be sure that all components are positioned to avoid a possibility of adjacent
component shorts. This is especially important on items transported to and
from the repair shop.

2. Verify that all protective devices such as insulators, barriers, covers, shields,
strain reliefs, power supply cords, and other hardware have been reinstalled
per the original design. Be sure that the safety purpose of the polarized line
plug has not been defeated.

3. Soldering must be inspected to discover possible cold solder joints, solder
splashes, or sharp solder points. Be certain to remove all loose foreign particles.

4. Check for physical evidence of damage or deterioration to parts and
components, for frayed leads or damaged insulation (including the AC cord),
and replace if necessary.

5. No lead or component should touch a receiving tube or a resistor rated at 1
watt or more. Lead tension around protruding metal surfaces must be avoided.

6. After reassembly of the set, always perform an AC leakage test on all
exposed metallic parts of the cabinet (the channel selector knobs, antenna
terminals, handle and screws) to be sure that set is safe to operate without
danger of electrical shock. DO NOT USE A LINE ISOLATION
TRANSFORMER DURING THIS TEST. Use an AC voltmeter having 5000
ohms per volt or more sensitivity in the following manner: Connect a 1500
ohm, 10 watt resistor, paralleled by a .15 mfd 150V AC type capacitor
between a known good earth ground water pipe, conduit, etc.) and the
exposed metallic parts, one at a time.
Measure the AC voltage across the combination of 1500 ohm resistor and
.15 mfd capacitor. Reverse the AC plug by using a non-polarized adaptor
and repeat AC voltage measurements for each exposed metallic part.
Voltage measured must not exceed 0.75 volts RMS. This corresponds to 0.5
milliamp AC. Any value exceeding this limit constitutes a potential shock
hazard and must be corrected immediately.

TIPS ON PROPER INSTALLATION

1. Never install any receiver in a closed-in recess, cubbyhole, or closely fitting
shelf space over, or close to, a heat duct, or in the path of heated air flow.

2. Avoid conditions of high humidity such as: outdoor patio installations where
dew is a factor, near steam radiators where steam leakage is a factor, etc.

3. Avoid placement where draperies may obstruct venting. The customer
should also avoid the use of decorative scarves or other coverings that might
obstruct ventilation.

4. Wall- and shelf-mounted installations using a commercial mounting kit must
follow the factory-approved mounting instructions. A product mounted to a
shelf or platform must retain its original feet (or the equivalent thickness in
spacers) to provide adequate air flow across the bottom. Bolts or screws
used for fasteners must not touch any parts or wiring. Perform leakage tests
on customized installations.

5. Caution customers against mounting a product on a sloping shelf or in a tilted
position, unless the receiver is properly secured.

6. A product on a roll-about cart should be stable in its mounting to the cart.
Caution the customer on the hazards of trying to roll a cart with small casters
across thresholds or deep pile carpets.

7. Caution customers against using a cart or stand that has not been listed by
Underwriters Laboratories, Inc. for use with its specific model of television
receiver or generically approved for use with TVs of the same or larger screen
size.

8. Caution customers against using extension cords. Explain that a forest of
extensions, sprouting from a single outlet, can lead to disastrous
consequences to home and family.

AV

PRODUCT SAFETY GUIDELINES

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DESCRIPTION OF CONTROLS...........................................4

SPECIFICATIONS.................................................................8

ADJUSTMENT INSTRUCTIONS ..........................................9

BLOCK DIAGRAM...............................................................14

EXPLODED VIEW...............................................................16

EXPLODED VIEW PARTS LIST.........................................17

REPLACEMENT PARTS LIST............................................18

SCHEMATIC DIAGRAM..........................................................

PRINTED CIRCUIT BOARDS.................................................

TABLE OF CONTENTS

- 4 -

- This is a simplified representation of front panel.
Here shown may be somewhat different from your TV.

Controls

Controls

Front Panel Controls

Front Panel Controls

TV/VIDEO

MENU

VOL CH

POWER Button

Remote Control Sensor

VOLUME (

FF,GG

) Buttons

Power Standby Indicator

Illuminates red in standby mode,
Illuminates green when the TV is
turned on.

CHANNEL (EE, DD) Buttons

MENU Button

TV/VIDEO Button

DESCRIPTION OF CONTROLS

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R

S-VIDEO VIDEO

L / MONO

AUDIO

FRONT

A/V INPUT

RS-232C INPUT

(CONTROL/SERVICE)

AUDIO

R

L

DIGITAL AUDIO

(OPTICAL)

DVI

INPUT

COMPONENT2
INPUT

OUTPUT

AUDIO
INPUT

RGB INPUT

VIDEO

HDMI /DVI

COMPONENT INPUT 1

R

L

(MONO)

CABLE

ANTENNA

AC INPUT

DVD
/DTV
INPUT

COMPONENT INPUT 2

MONITOR OUTPUT

A/V INPUT

VIDEO

AUDIO

Cable

S-VIDEO

REMOTE
CONTROL

S-VIDEO Input

A connection available to provide bet­ter picture quality than the video input.

CableCARD™

Used for
CableCARD™
received from
Cable Service
Provider.

VIDEO Input

Connects the video signal from a
video device.

AUDIO Input

Use to connect to hear stereo sound
from an external device.

Antenna Inputs

Connect antenna
signals to the TV.

RGB/AUDIO INPUT

Connect the monitor output connector
from a PC to the appropriate input port.

Digital Audio (DVI:
Digital Visual
Interface/Component2)
Input/
Digital Audio Output

Connect digital audio
from various types of
equipment.

Note: In
standby mode,
these ports will not
work.

DVD/DTV Input
(Component 1-2)

Connect a DVHS, a
MicroMV Camcorder, or
a Set-Top Box to one of
IEEE1394 connectors.

Monitor Output

Connect a second
TV or Monitor.

Remote Control Port

Connect your wired
remote control here.

S-Video Input

Connect S­Video out from
an S-VIDEO
device to the S­VIDEO input.

CABLE Inputs

Connect cable signals to the
TV, either directly or through

your cable box.

RS-232C INPUT (CON-

TROL/SERVICE) PORT

Connect to the RS-232C
port on a PC.

HDMI/DVI

connect a
DVI(Video)
signal to
HDMI/DVI.

Audio/Video Input

Connect audio/video
output from an
external device to
these jacks.

Power Cord Socket

This TV operates on an AC power. The voltage

is indicated on the Specifications page. Never

attempt to operate the TV on DC power.

Connection Options

Connection Options

Back Connection Panel

Back Connection Panel

DESCRIPTION OF CONTROLS

- 6 -

- When using the remote control, aim it at the remote control sensor on the TV.

MODE

DAY -

DAY +

FLASHBK

TIMER

FREEZE

TV INPUT

TV/VIDEO

EXIT

GUIDE

CC

TV INPUT

• Rotates the input mode between Antenna
and Cable.

• External input modes: Video, Front Video,
Component 1-2, RGB-DTV (or RGB-PC)

and HDMI/DVI input sources.

MUTE

Switches the sound on or off.

MODE

Selects the remote operating mode: TV,

DVD, VCR, AUDIO, CABLE or STB. Select

a mode other than TV, for the remote to

operate an external device.

FLASHBK

Tunes to the recent channels.

EXIT

Clears all on-screen displays and returns to

TV viewing from any menu.

TIMER

Lets you select the amount of time before

your TV turns itself off automatically.

MENU

Brings up the main menu to the screen.

Enters or exits a Panel Menu in the TV Guide

On Screen system.

EZ PIC

Selects a factory preset picture mode

depending on the viewing environment.

FREEZE

Freezes the currently-viewed picture.
Main picture is frozen.

TV/VIDEO

External input modes rotate in regular
sequence: Video, Front Video,
Component 1-2, RGB-DTV (or RGB-PC)
and HDMI/DVI input sources.
(Video, Front Video, Component 1-2 input
sources are linked automatically, only if
these are connected )

RATIO

Changes the aspect ratio.

INFO

When you watch the TV, information dis­plays on top of the screen. Not available
in Component 1-2, RGB and HDMI/DVI
mode.

FAV

Scroll the Favorite channels.

EZ SOUND

Selects the sound appropriate for the

program's character.

Installing Batteries

• Open the battery compartment cover on the back side and install the batteries
matching correct polarity (+ with +, - with -).

• Install two 1.5V AAbatteries. Don’t mix old or used batteries with new ones.

Replace cover.

Remote Control Key Functions

Remote Control Key Functions

DESCRIPTION OF CONTROLS

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DAY+/DAY-

Moves forward or backward in 24 hour
increments in the Listings Grid.

MODE

DAY -

DAY +

FLASHBK

TIMER

FREEZE

TV INPUT

TV/VIDEO

EXIT

GUIDE

CC

NUMBER buttons

VCR/DVD BUTTONS

• Control some video cassette recorders
or DVD players. ("RECORD" button is not
available for DVD players.)

POWER

Turns your TV or any other programmed

equipment on or off, depending on mode.

CC

Select a closed caption:

Off, CC1~4, Text1~4.

THUMBSTICK (Up/Down/Left/Right/ENTER)

Allows you to navigate the on-screen menus

and adjust the system settings to your pref-

erence.

CHANNEL UP/DOWN

Selects available channels found with EZ
scan.

PAGE UP/PAGE DOWN

Moves from one full set of screen infor­mation to the next one.

EZ SOUND

Selects the sound appropriate for the pro-

gram's character.

SAP

Selects MTS sound: Mono, Stereo, and
SAP in Analog mode. Change the audio
language in DTV mode.

LIGHT

Illuminates the remote control

buttons of selected mode.

VOLUME UP/DOWN

Increases/decreases the sound level.

GUIDE

Shows programme schedule.

ADJUST

Adjusts screen position, size, and phase in

PC mode.

Remote Control Key Functions

Remote Control Key Functions

DESCRIPTION OF CONTROLS

- 8 -

• The specifications shown above may be changed without prior notice for quality improvement.

MODELS

AC100-240V ~ 60Hz

NTSC-M, ATSC

VHF 2 ~ 13, UHF 14 ~ 69, CATV 1 ~ 135, CADTV 1 ~ 135. DTV 2 ~ 69

75 Ω

16,770,000 (256 steps of each R, G and B)

32 ~ 104°F (0 ~ 40°C)

Less than 80%

6561 feet (2000m)

48.4 / 1210

27.6 / 701

11.6 / 295
79 / 35.9

852 x 480 (Dot)

Width (inches / mm)

Height (inches / mm)

Depth (inches / mm)

Weight (pounds / kg)

Resolution

Power requirement

Television System

Program Coverage

External Antenna Impedance

Color

Operating Temperature Range

Operating Humidity Range

Maximum Elevation

Z42PX2D/Z42PX21D

SPECIFICATIONS

1. Application Object

These instructions are applied to all of the PDP TV, AF-05FC.

2. Notes

(1) Because this is not a hot chassis, it is not necessary to use

an isolation transformer. However, the use of isolation

transformer will help protect test equipment.
(2) Adjustments must be done in the correct order.
(3) The adjustments must be performed in the conditions of

25±5°C of temperature and 65±10% of relative humidity if

there is no specific designation.
(4) The input voltage of the receiver be must kept 110V, 60Hz

during adjustment.
(5) The receiver must be operational for about 15 minutes

prior to the adjustments.

1) After receiving 100% white pattern, the receiver must be
operated 15 minutes prior to adjustment. (Or 8. White
Pattern condition in EZ - Adjust)

2) Enter into White Pattern

- Pressing POWER ON Key on Service Remote Control

(S R/C)

- Enter the Ez - Adjust by pressing ADJ Key on Service

Remote Control (S R/C).

- Select the 7. White Pattern using CH +/- Key and

press the Enter(

Y) Key.

Display the 100% Full White Pattern.

[ The set will display white screen without a signal

generator in this mode.

If you turn on a still screen more than 20 minutes (Especially
Digital pattern, Cross Hatch Pattern), an afterimage may occur
in the black level part of the screen.

3. EPLD Download

(1) Test Equipment: PC, Jig for download
(2) Connect the power of VSC B/D.
(3) Execute download program(iMPACK) of PC.
(4) After executing the hot key on the Programmer, click icon
(5) End after confirming

4. POD Certificate Download

4-1. Preparation for Adjustment

(1) Connect the MEMORY JIG and PC.
(2) Turn on the JIG MAIN POWER SWITCH.
(3) After turn on the PC and MONITOR, execute the

‘Certificate Downloader v1.4’ from the screen.

4-2. Adjustment Sequence

(1) After open the ‘Certificate Downloader v1.4’, enter

Connection set and set the as same below.
The port settings are determined by each PC's setup.

(2) Select ‘Connection’ and SET connected to RS-232C.
(3) After clicking "Enter", confirm that "Enter Password:"

appears.

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ADJUSTMENT INSTRUCTIONS

PC

VSC

B/D

<Fig 1> Connection Diagram of EPLD Download

- 10 -

ADJUSTMENT INSTRUCTIONS

(4) Click the "OpenFile - Download" button from CP Data

Download, ‘select Private Key’ appears and click ENTER.

(5) After clicking ENTER, the ‘opens Private key' window

appears and select the Private key applied to the SET.
The Private Key file name is on the Label of the Digital
Board.

(6) When the Dialog window appears, click OK and the write

work will begin.

(7) When completed, click ‘CP Data Download: OK’

[ When ‘CP Data Download: OK’ does not appear, certificate

has not Download correctly.
SET is rebooted and certificate Download work must be
repeated.

5. Cable Operation Confirmation

(1) Confirm that the Cable Card is inserted in the slot.
(2) Enter the EZ adjust menu by pressing Adjust on the

Service Remote Control (S R/C).

(3) Go to number 2 Cable Check and press the Right key (

G) .

(4) Confirm items below.

Name

Descrambler

Check

CableCARD

OOB Path
FDC_SNR

Video Signal

Normal

OK

CableCARD

TM

is inserted.

OK(Lock)

OK(20dB above)

Normal Screen

Defective

Not OK

CableCARD

TM

is removed.

Not OK(Unlock)

Not OK(20dB under)

Black Screen

(No Picture)