Polaroid PLA-4200M Service manual

42” Plasma Color Television

Model: PLA-4200M

Service Manual

PDP TV SERVICE MANUAL

Contents

1.Safety instruction…………………………….……………2

2.Specification………………………………….……………4

3.Signal processing and system block diagram….…………..5

4.Part list ……………………………….…………………….7

5.General assembly drawing …………….………………...10

6.General connection diagram………………………………11

7.Failures analysis…………………………….………….….15

8.Description of main ICs and components ….……………..19

1


Notice: This service manual is only read and used by professionals. The repairman should review the part of safety precaution before work.

1.Safety instruction

TO PREVENT POSSIBLE DANGER,DAMAGE, AND BODILY HARM, PLEASE CONSIDER

AND OBSERVE ALL CAUTIONS CONTAINED IN THIS PARAGRAPH.

A.Warning

If you don’t consider the following warning before maintenance, it could result in death or serious injury.

(1) The PDP module is controlled by voltage about 350V. If you need to handle the module during operation or just after power-off, you must take proper precautions against electric shock and never touch the drive circuit portion and metallic part of PDP module.

The capacitors in the drive circuit portion remain temporarily charged even after the power off. After turning off the power, you must be sure to wait at least one minute before touching the module. If the remainder of voltage is strong enough, it could result in electric shock.

(2) Do not use any other power supply voltage than the specified voltage in this product specifications. If you use deviated power voltage from the specifications, it could result in fire hazard or product failure.

(3) Do not operate or install under the deviated surrounding from the environmental specification such as in moisture or rain; near water-for example, bath tub, laundry tub, kitchen sink; in a wet basement; or near a swimming pool; and also near fire or heater for example, near or over radiator heat resistor; or where it is exposed to direct sunlight; or somewhere like that. If you use the PDP module in places above, it could result in electric shock, fire hazard or product failure.

(4) If any foreign objects (e.g. water, liquid and metallic chip or dust) entered the PDP module, the power supply voltage to the PDP module must be turned off immediately. Also never push objects of any kind into the PDP module as they may touch dangerous voltage point or make short circuits that could result in fire hazard or electric shock.

(5) If smoke, offensive smell or unusual noise should come from the PDP module, the power supply voltage to the

PDP module must be turned off immediately.

Also, when the PDP screen cannot display any picture after the power-on or during operation, the power supply must be turned off immediately. Never continue to operate the PDP module under these conditions.

6 Do not disconnect or connect the PDP module’s connector while the power supply is on, or just after power off.

Because the PDP module is operated by high voltage, and the capacitors in drive circuit remain temporarily changed even after the power is turned off. If you need to disconnect it, you have to wait at least one minute after power off.

7 Do not disconnect or connect the power connector by wet hands. The voltage of the product may be strong enough to cause an electric shock..

2


8

Do not damage the power cable of the PDP module, also do not modify it.

When the power cable or connector is damaged or frayed, do not use it.

When the power connector is covered with dust, please wipe it with a dry cloth before the power on.

Caution

If you don’t consider the following cautions, it may result in personal injury or damage to the product.

Do not set the PDP module on an unstable place, vibrating place or inclined place. The PDP module may fall or drop, and it may cause serious injury to a person, and serious damage to the product.

If you need to remove the PDP module to another place, you must turn off the power supply and detach the interface cable and power cable from the PDP module, and watch your steps during the work. If the cable has a damage, it may result in fire hazard or electric shock. Also if the PDP module drop or fall, it may result in personal injury.

When you draw or insert the PDP’s cable, you must turn off the power supply and do it with holding the connector. If you draw the cable, the electric wire in the cable could be exposed or broken. It may result in fire hazard or electric shock.

To carry the PDP module, it be done by two workers in order to avoid unexpected accidents.

The PDP module has a glass-plate. If the PDP module is inflicted with excessive stress for example; shock, vibration, bending and heat-shock, the glass plate could break. It may result in personal injury. And also, do not press or strike the glass surface.

If the glass plate was broken, do not touch it with bare hand. It may result in a cut injury.

Do not place any object on the glass plate. It may scratch or break the glass plate.

Do not place any object on the PDP module. It may result in personal injury due to its fall or drop.

3


2.Specifications

Type

System of the broadcasting

System of the video signal

Number of stored programs

Scope of the channel

Signal intensity

Audio input

Speaker output

Visual angle (Max)

Resolution

Power supply

Energy consumption

Dimensions (W*H*D)

Size of screen

Aspect ration

Weight

Ambient temperature

Ambient humidity

Ambient air pressure

PLA-4200M

NTSC-M

PAL/NTSC/SECAM

125

Air: CH2 to CH69,

Cable: CATV1 to CATV125

70dB

Input impedance>10k ,

Input voltage 0.1-0.5 V(rms)

2*5W

160

852*480

AC 100V-240V (50Hz/60Hz)

350W(typ).3W (stand by)

46.1*29.1*5.2 inch

42 inch

16:9

110 lb.

0-35

20%-70%RH

86-106Kpa

4

3.Signal processing and system block diagram

A. Image signal processing block diagram


VGA IN

J201

R G B H V

S-VHS IN

V1 IN

V2 IN

J4

J3

U202

AD9883A

A/D Convertor

Digital RGB

Y

UV

U101 U531

PW166B scale

R(0,7)

G(0,7)

B(0,7)

THC63LVD823

LVDS

PDP

Panel

U31

SST39VF800A

U301 U302

Flash

Y

VPC3230

PW1230

Decoder

UV De-interlace

AC Card

SAMP

+5V +9V +12V

YCbCr IN

J2

U1

Zilog Z86229

CCD

V-Chip

MEMORY

BUFFER

U303

Cable/air IN

A1 IN

A2 IN

TCPN9082DC

27D(T)

TUNER

EXT Audio IN

EXT Audio IN

U3

MSP 3450G

MTS Process

U4

TDA8944

Audio Amp

Speaker

Speaker

+12V

DC/DC

+5V

+3..3V

5

B. PDP DISPLAY SCREEN BLOCK DIAGRAM


6


4.Part list

Part Number

A904008

Included in A904008

SPW5.069.166

SPW5.969.003

A920008

B135011

SPW8.339.008

E143221JF

E143222JH

E143461

E143463

E144231

E144431

E690220

E690221

E690223

E690230

E690420

E690660

E690670

S070183

G330170

Description

Polaroid PLA-4200M Plasma Display Panel

Polaroid PLA-4200M Cable L=150mm

Polaroid PLA-4200M YPbPr Circuit Board

Polaroid PLA-4200M Remote Control Circuit Board

Polaroid PLA-4200M Zinnia PDP Control Circuit Board

Polaroid PLA-4200M Main Power Button

Polaroid PLA-4200M Tapping Screw ST3*8F

Polaroid PLA-4200M Tapping Screw ST3*8 (black)

Polaroid PLA-4200M Tapping Screw ST4*16

Polaroid PLA-4200M Tapping Screw ST4*16 (black)



Polaroid PLA-4200M SEMS Screw M3*8

Polaroid PLA-4200M SEMS Screw M3*8 (black)






Polaroid PLA-4200M Power Switch KDC-A04-1

Polaroid PLA-4200M Remote Control

Qty.

1

6

16

6

30

3

1

1

1

1

8

1

2

1

1

2

14

10

4

16

6

15

7

4.Part list

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8

4.Part list

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9

5.General assembly drawing


10


6.General connection diagram

W2 7-31

X1001

Receiving Unit for

Remote control

SPW.5.969.003

1

15

W17

6-15

J5 (LVDS 1/F)

1 31

CN

(TTL 1/F)

CN6

Main board

(OSD)

13

J1

Power

1

J2

Power

9

1

J7

6

1

CN1

Connector

J6

CN2

Tuner board

W3

4-6

W4

2-13

W5

1-9

LA03

CON8011

CON8009

Plasma Display Panel

S42SD-YD

Power filter board

CN6

(DV1)

J8

12 1

5-3

CN8702

CN8701 CON8002

Right

SWITCH

5-3

Speaker

YPbPr Board

Left

9-1

Speaker

3-12

YPbPr Socket

SPW5.069.166

16-1

11

220V~IN

Power supply socket


B. Input Power Voltage Source and Pin Assignment

Connector Name: SA J1(W4)

to The Image Board

Voltage Source Usage Pin no

1 5Vsb Vcc5-SB-PDP

2 GND GND

3 GND-D GND

4 B5d1 NC

5 RELAY PDP-RELAY

6 TH-DET NC

7 FAN-DET NC

8 GND-A GND

9 GND-A GND

10 NC

11 V12A

NC

NC

12 V5a Vcc5-PDP

13 NC NC

Connector Name: AUDIO J2(W5)

Pin no to The Audio Amp Board

Voltage Source Usage

1 V5A Vcc5-PDP

2 GND-A GND

3 12VCC Vcc12-FAN

4 V9A Vcc9-PDP

5 GND-A GND

8 GNDS GND-AUD

9 GNDS GND-AUD

13


Pin no

Connector Name:

OSD(W17)

Usage

1 Vcc5

2 KPAD0

3 KPAD1

4 KPAD2

5 KPAD3

6 LED-RED

7 LED-GREEN

8 Vcc5-SB

9 GND

10 POWER-SW

11 IR

12 KPAD4

13 KPAD5

14 KPAD6

15 KPAD7

Connector Name:

SPEAKER(W3)

Pin no Usage

1 SPEAKER-SW

2 SPK-OUT1-

3 SPK-OUT1+

4 GND

5 SPK-OUT2-

6 SPK-OUT2+

14


7.Failures analysis

Without raster

Judge input voltage and frequency whether

they are right

Judge whether this product is in standby mode by remote control

Check whether the current received signal is right

Turn off for 2 minutes, then turn on again to check whether the picture emerges input the voltage and frequency according to the specification

Press power key to turn on

Check the external signal source

if it is ok, maybe failure results from poor contact

Open the rear cover then enter power-on mode to check the

CON8002-220v voltage of PDP

Replace power supply switch or filter with poor performance

15


Check the output voltage

CON8011 / CON8009 of power board

Check and repair display screen power board voltage

Check the input voltage J1

/ J3 connector of main board

Check and transpose the line of connector

Check the supply voltages of mainboard:Vcc5-SUB(IC-U

15-4#),Vcc3(IC-U8-2#)

Check

OR transpose

U15-1.#IN , D1,CE21,CE26.

U8-2#IN, C198, CE33.

C heck or transpose the signal data line of connector check and transpose the main board check the driver board of PDP display screen, and the slices of soft IC etc.

Check the other circuits

16

Display image but without sound

Turn on to check whether there is noise exchange tuner board


Check whether the volume is correctly set

Read the operating instruction, and set the volume again

Check J7 waveform of Speaker's audio output

Check and exchange speaker

Check IC U4 whether input or output signal is ok.

Check IC U3 Whether input-60#/output-27#

28# signal is OK

Check and exchange IC U4

Check and exchange IC

U3

17


Check whether there is audio output in connector

CN1/CN2- 40#pin

Check and exchange the connector which is not good.

Check whether there is audio output in tuner board

(U5-14#)

Exchange the tuner board

or the tuner.

18

8.Description of main ICs and components

(1) M52790SP/FP

AV SWITCH with I

2

C BUS CONTROL

DESCRIPTION

The M52790 is AV switch semiconductor integrated circuit with I

2

C bus control .

This IC contains 2-channels of 4-input audio switches and

2-channels of 4-input video switches. Each channel can be controled independently .

The video switches contain amplifiers can be controled a gain of output 0dB or 6dB .

FEATURES

•Video and stereo sound switches in one package

•Wide frequency range (video switch) ...........DC-20MHz

•High separation ( video switch ).................Crosstalk

-60dB ( typ. ) at 1MHz

•Two types of packages are provided : SDIP with a lead pitch of 1.778mm ( M52790SP ) ; and SSOP with a lead pitch of 0.8mm ( M52790FP ) .

APPLICATION

Video equipment

RECOMMENDED OPERATING

CONDITION

Supply voltage 4.7V ~ 9.3V

Rated supply voltage 5V,9V

Maximum output current 63mA(at 9V)


19


20


(2) MSP3450G

Multistandard Sound Processor Family

Release Note: Revision bars indicate significant changes to the previous edition. The hardware and software description in this document is valid for the MSP 3450G version B5 and following versions.

Introduction

The MSP 3450G family of single-chip Multistandard Sound Processors covers the sound processing of all analog

TV-Standards worldwide, as well as the NICAM digital sound standards. The full TV sound processing, starting with analog sound IF signal-in, down to processed analog AF-out, is performed on a single chip. Figure4 shows a simplified functional block diagram of the MSP 3450G.

This new generation of TV sound processing ICs now includes versions for processing the multichannel television sound (MTS) signal conforming to the standard recommended by the Broadcast Television Systems Committee

(BTSC). The DBX noise reduction, or alternatively, MICRONAS Noise Reduction (MNR) is performed alignment free.

Other processed standards are the Japanese FM-FM multiplex standard (EIA-J) and the FM Stereo Radio standard.

Current ICs have to perform adjustment procedures in order to achieve good stereo separation for BTSC and EIA-J.

The MSP 3450G has optimum stereo performance without any adjustments.

All MSP 3450G versions are pin and software downward-compatible to the MSP 3450D. The MSP 34x0G further simplifies controlling software. Standard selection requires a single I

2

C transmission only.

The MSP 34x0G has built-in automatic functions: The IC is able to detect the actual sound standard automatically

(Automatic Standard Detection). Furthermore, pilot levels and identification signals can be evaluated internally with subsequent switching between mono/ stereo/bilingual; no I

2

C interaction is necessary (Automatic Sound Selection).

The ICs are produced in submicron CMOS technology. The MSP 34x0G is available in the following packages:

PLCC68, PSDIP64, PSDIP52, PQFP80, and PLQFP64.

Fig. 4: Simplified functional block diagram of the MSP 3450G

21


(3) VPC323OD

PRELIMINARY DATA SHEET

Comb Filter Video Processor

Introduction

The VPC 3230D is a high-quality, single-chip video front-end, which is targeted for 4:3 and 16:9, 50/60-Hz and

100/120 Hz TV sets. It can be combined with other members of the DIGIT3000 IC family (such as DDP 331x) and/or it can be used with 3rd-party products.

The main features of the VPC 3230D are

– high-performance adaptive 4H comb filter Y/C separator with adjustable vertical peaking

– multi-standard color decoder PAL/NTSC/SECAM including all substandards

– four CVBS, one S-VHS input, one CVBS output

– two RGB/YC r

C b component inputs, one Fast Blank (FB) input

– integrated high-quality A/D converters and associated clamp and AGC circuits

– multi-standard sync processing

– linear horizontal scaling (0.25 ... 4), as well as non-linear horizontal scaling ‘Panoramavision’

– PAL+ preprocessing

– line-locked clock, data and sync, or 656-output interface

– peaking, contrast, brightness, color saturation and tint for RGB/YC r

C b and CVBS/S-VHS

– high-quality soft mixer controlled by Fast Blank

– PIP processing for four picture sizes (1/4,1/9,1/16, or1/36 of normal size) with 8-bit resolution

– 15 predefined PIP display configurations and expert mode (fully programmable)

– control interface for external field memory

– I

2

C-bus interface

– one 20.25-MHz crystal, few external components

– 80-pin PQFP package

System Architecture

Fig.5 shows the block diagram of the video processor

Fig. 5: Block diagram of the VPC 3230D

22

Pin Configuration


Fig.6: 80-pin PQFP package

23

(4) Z86229

NTSC LINE 21 CCD DECODER


GENERAL DESCRIPTION

Capable of processing Vertical Blanking Interval (VBI) data from both fields of the video frame in data, the

Z86229 Line 21 Decoder offers a feature-rich solution for any television or set-top application. The robust nature of the Z86229 helps the device conformto the transmission format defined in the Television Decoder Circuits

Act of 1990, and in accordance with the Electronics Industry Association specification 608 (EIA–608).

The Line 21 data streamcan consistof data fromseveral data channels multiplexed together. Field 1 consists of four data channels: two Captions and two Texts. Field 2 consists of five additional data channels: two Captions, two Texts, and Extended Data Services (XDS). The XDS data structure is defined in EIA–608. The Z86229 can recover and display data transmitted on any of these nine data channels.

The Z86229 can recover and output to a host processor via the I

2

C serial bus. The recovered XDS data packet is further defined in the EIA–608 specification. The on-chip XDS filters in the Z86229 are fully programmable, enabling recovery of only thoseXDSdata packets selected by the user. This functionality allows the device to extract the required XDS information with proper XDS filter setup for compatibility in a variety of TVs, VCRs, and Set-Top boxes.

In addition, the Z86229 is ideally suited to monitor Line 21 video displayed in a PiP window for violence blocking, CCD, and other XDS data services.

24


25

(5) HY57V641620HG

DRAM


26


27

(6) TDA8944J

STEREO AUDIO AMPLIFIER


28


Fig 9. Block diagram

29

(7) PW166 ImageProcessor

XGA/SXGA Flat Panel Display Controller IC


30


Fig11.PW166 Pin Diagram - Top View

31

ImageProcessor Pin Descriptions


32

ImageProcessor Pin Descriptions (continued)


33



34



35



36



37



38

Polaroid PLA-4200M Service manual

Assistant Bot

42” Plasma Color Television

Model: PLA-4200M

Service Manual

Contents

Notice: This service manual is only read and used by professionals. The repairman should review the part of safety precaution before work.

1.Safety instruction

2.Specifications

3.Signal processing and system block diagram

4.Part list

4.Part list

4.Part list

5.General assembly drawing

6.General connection diagram

7.Failures analysis

8.Description of main ICs and components

AV SWITCH with I

C BUS CONTROL

Related manuals

Polaroid PLA-4200M Service manual

Assistant Bot

42” Plasma Color Television

Model: PLA-4200M

Service Manual

Contents

Notice: This service manual is only read and used by professionals. The repairman should review the part of safety precaution before work.

1.Safety instruction

2.Specifications

3.Signal processing and system block diagram

4.Part list

4.Part list

4.Part list

5.General assembly drawing

6.General connection diagram

7.Failures analysis

8.Description of main ICs and components

AV SWITCH with I

C BUS CONTROL

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