Zenith P40V22 Service Manual

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1. Application Object

These instructions are applied to all of the PDP monitor, NP­00LE.

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 instrument.
(2) Adjustment must be done in the correct order.
(3) The adjustment must be performed in the circumstance 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 must keep 110~240V,

50/60Hz in adjusting.
(5) The receiver must be operated for about 15 minutes prior

to the adjustment.

¤ After receiving 100% white pattern(06CH), the receiver

must be operate prior to adjustment.(Or white condition
in HEAT-RUN mode)

¤ŁEnter into HEAT-RUN mode

- Select the HEAT-RUN OFF by pressing ADJ button on
Remote Control for adjustment.

- Press the VOL + button in HEAT-RUN OFF.

(OSD display HEAT-RUN WHITE and screen display
100% full WHITE PATTERN)

¤ØSet is activated HEAT-RUN without SET TOP BOX or

signal generator in this mode.

[ Single color pattern of HEAT-RUN mode uses to check

PANEL.(RED/BLUE/GREEN)

[Caution] If you turn on a still screen more than 20 minutes, a

afterinage may be occur in the black level part of the
screen.

3. POWER PCB Assy Voltage Adjustment

[ Replace PDP Module or Power Board, adjust certainly Power

PCB Assy Voltage.

3-1. Test Equipment

D.M.M 1EA

3-2. Connection Diagram for Measuring

Refer to Fig 1.

3-3. Adjustment Method

(1) Va Adjusment(Address Voltage Adjusment)

¤ Connect pin 1 of P814 to (+) jack of D.M.M.
¤ŁAfter turning the VR803(Va Adj), voltage of D.M.M

adjustment as same as Va voltage which on label of
panel right/bottom.(Deviation : ±0.5V)

(2) Vs Adjustment

¤ Connect pin of P803 to (+) jack of D.M.M.
¤ŁAfter turning the VR804(Vs Adj), voltage of D.M.M

adjust as same as Vs voltage which indicated on label
of panel right/bottom.(Deviation : ±0.5V)

(3) VSC Adjustment

¤ Connect pin 4 of P802 to (+) jack of D.M.M.
¤ŁAfter turning the VR806(VSC Adj), voltage of D.M.M

adjust as same as Vs voltage which indicated on label
of panel right/bottom.(Deviation : ±0.5V)

(4) VSETUP Adjustment

¤ Connect pin 1 of P802 to (+) jack of D.M.M.
¤ŁAfter turning the VR805(VSETUP Adj),voltage of D.M.M

adjust as same as Vs voltage which indicated on label
of panel right/bottom.(Deviation : ±0.5V)

4. Adjustment of RGB Cut-off and
White Balance

4-1. Required Equipment

Color analyzer(CA-100 or same production)

4-2. Connection Diagram of Equipment for

Measuring

ADJUSTMENT INSTRUCTIONS

VSETUP

VR806

VR805

VR804

DMM

VSC

VA

VSC CTL

V

A CTL

P814

VR803

GND

V

SETUP CTL

V

S CTL

V

S

<Fig 1> Connection Diagram of Power Adjustment for Measuring

Refer to Typical Voltage

Va

Vs

Vsc

Vsetup

75V

188V

90V

230V

Address Voltage

Sustain Voltage

Scan Voltage

Setup Voltage

COLOR

ANALYZER

TYPE; CA-100

Window Pattern

CVBS Signal Input

High Light

120±4cd/m2

Low Light
6±1cd/m2

PDP MONITOR

MSPG-2100 or
MSTG-5200

<Fig 2> Connection Diagram of Automatic Adjustment

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4-3. Adjustment of RGB CUT OFF

(1) Select RGB cut-off(adjustment 1) by pressing ADJ button

on Remote Control for adjustment. (If it enter to adjustment

mode, it is selected RF 13CH automatically)
(2) Press the VOL + or VOL - button.
(3) It displayed all of the black on the screen and then

adjustment is started.
(4) If adjustment is finished, exit from adjustment mode by

pressing enter button.

4-4. Adjustment of White Balance

¥ White Balance should be done after RGB cut-off become

adjustment.

¥ Operate the Zero-calibration of the CAÑ100, then stick

sensor to PDP module surface when you adjust.

(1) Select WHITE PATTERN of HEAT RUN mode by pressing

ADJ button on Remote Control for adjustment then operate

HEAT RUN more than 15 minute.
(2) Supply 10 step gray scale bar signal or window pattern in

pattern generater. (When using the STB, input RF 13CH, it

does not use, input AV.)

[ When adjustment is operated manually, perate process (3)

to (6) regular sequence, when adjustment is operated

automatically perate process (1) to (2).

(3) To adjust Low Light, stick sensor to 9th pattern(Dark),

select the R cut(adjustment 8)/B cut(adjustment 10) by

pressing ADJ button on Remote Control for adjustment

and adjust it until color coordination becomes

X=0.280±0.003, Y=0.310±0.003 and color temperature

becomes 8.800

cK ± 500cK by pressing VOL+, - button. (G-

cut fixation)
(4) To adjust High Light, stick sensor to 2th pattern(White).

Select the R Gain(adjustment 5)/G Gain(adjustment 6) by

pressing ADJ button on Remote Control for adjustment

and adjust R Gain/G Gain until color coordination becomes

X=0.280±0.003, Y=0.310±0.003 and color temperature

becomes 8.800cK ± 500cK.(B-Gain fixation)
(5) Confirm the result of the High Light adjustment.

If the deviation of High Light occur, operate the adjustment

of Low Light and High Light again.
(6) Exit adjustment mode using Enter button.

5. Color Temperature of STB
White Balance Adjustment

5-1. Required Equipment

Color Analyzer(CA-110, CA-100 or same production)

5-2. Connection diagram of equipment for

measuring

(1) To adjust the deviation of the STB signal output.
(2) Use regular PDP Monitor(JIG).

5-3. Adjustment Method

¥ Connect the STB to regular PDP Monitor.
¥ Operate the zero-calibration of the CA-100, then stick

sensor to surface of PDP module when you adjust.

(1) Select ITE PATTERN of HEAT RUN mode by pressing

ADJ button on Remote Control for adjustment, then
operate HEAT RUN more than 15 minute.
(Operate the HEAT RUN to adjust the STB at first, then if
OFF hour donÕt keep more than 3 minutes, operate next
adjustment of the STB without HEAT RUN.)

(2) Supply 10 step gray scale bar signal or window pattern in

pattern generator(RF 13CH or AV1)

[ When adjustment is operated manually, perate process (3)

to (7) regular sequence, when adjustment is operated
automatically perate process (1) to (2).

CVBS Signal Input

CVBS 

Signal Input

Adjustment Adjustment

<Fig 3> Connection Diagram of Manual Adjustment

COLOR

ANALYZER

TYPE; CA-100

CVBS Signal Input

PDP MONITOR

SETTOP BOX

Window Pattern

MSPG-2100 or MSTG-5200

High Light

120±4cd/m2

Low Light
6±1cd/m2

<Fig 4> Connection Diagram of STB Automatic Adjustment

Signal Input

Adjustment Adjustment

<Fig 5> Connection Diagram of STB Manual Adjustment

(3) Select CXA2101 ADJ STB(CH+/- button) by pressing

INSTART button on Remote Control for adjustment.
Select adjustment mode with VOL+ or VOL-.(Adjustment
0~4)

(4) To adjust Low Light, stick sensor to 9th pattern(Dark).

Select the B Cut(adjustment 0)/R Cut(adjustment 1), then
adjust the B Cut/R Cut until color coordination becomes
X=0.280±0.003, Y=0.310±0.003 and color temperature
becomes 8.800cK ± 500cK by pressing VOL+, - button.

(5) To adjust High Light, stick sensor to 2th pattern(White).

Select the R Gain(adjustment 2)/G Gain(adjustment 3),
then adjust the R Gain/G Gain until color coordination
becomes X=0.280±0.003, Y=0.310±0.003 and color
temperature becomes 8.800cK ±500cK. (B-Gain fixation)

(6) Confirm the result of the High Light adjustment.

If the deviation of High Light occur, operate the adjustment
of Low Light and High Light again.

(7) Exit adjustment mode using Enter button.

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- 10 -

TROUBLESHOOTING

Phenomenon

No Power

No Raster

Abnormal Picture

An example of
abnormal picture.

No Sound

PSU(Power Supply Unit) is dead.

PSU operates protect mode, when the power
lines of the boards of module or VSC(Video
Scan Converter) is short.

When the connecters of Y_board or z_board
are not inserted in a wafer or electrically
opened, the picture of monitor is very dim.

When the connecters of X_boards are not
inserted in a wafer or electrically opened,
three tenths or two tenths of picture of monitor
is not present.

In case of the connecter of
Left_Bottom_X_board is open.

PSU 12V power line is short. Or the VSC 12V
power line short.

The 41p connecter assembly(PD501), from
VSC to control board of Module, is open.

The regulators of VSC Board are wrong
condition.

In case of the clocks of Scaler(MX88L284,
IC401) or AD Converter(THS8083, IC301) are
not present.

In case of one of two connecters(P006A and
P007A) is not connected with a proper wafer,
or opened.

The regulator of VSC Board is wrong
condition.

Replace PSU.

1) Remove all connecter assemblies from PSU to X_board,
Y_board & Z_board.

2) Turn on power.

3) If PSU repeatedly operates protect mode, then replace
VSC board.

4) Otherwise, check the power lines of Module.

5) Power lines of Module are short, replace the board of
module or module.

Find the connecters, insert into a wafer or replace the
connecter.

Find the connecters, insert into a wafer or replace the
connecter.

Replace PSU. Or replace VSC board.

Check the 41p connecter assembly.
If the 41p connecter assembly is internally open, replace.

Check the regulators of VSC(IC201, 202, 205, 301, 302, 404
and 406). If these are wrong inserted or shorted to GND,
then replace.

Check clock output pin of each IC.
If output is not present,

1) Check Power line of the IC.

2) Check Crystals(X301, X401).

3) Replace IC.

Check P006A & P007A.
If it is internally open, then replace.

Check the regulator of VSC(IC601).
If these are wrong inserted or shorted to GND, then replace.

Root Cause/Responsibility Solution

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BLOCK DIAGRAM

1. VSC Board

Chip for flat panel display application

VGA SVGA scale up/down

Triple 8Bit, 80MSPS, 3.3V Video&Graphic Digitizer

with Digital PLL

Analog R/G/B 3X8 Digital R/G/B

Display Processor & Scan Rate Converter

(Format Converter)

Interlace

Progressive

15KHz 31KHz(2H X 1V)

Comb Filter Video Process

TV CVBS(Composite Video Baseband

Signal) Y/C(Y,U,V)

P101

V/R/L

P102

DVD

DS102

DS101

IC203

VPC3230

Decoder

80Pin

IC203

VPC3230

Decoder

80Pin

3

Y,Cb,Cr

CVBS

(A)

1

IC204

SDA9410

Deinterlace &

D/A

100Pin

IC204

SDA9410

Deinterlace &

D/A

100Pin

8 LU0-7

8

CHR0-7

IC303

CXA2101AQ

Video&

80Pin

IC303

CXA2101AQ

Video & Chroma

80Pin

STB-R/G/B/HS/VS(A )

5

PC-R/G/B/HS/VS(A)

5

DTV-Y/ Pb/Pr (A)

3

TV-Y/U/ V/ HVs

(A)

4

IC304

THS8083

100Pin

IC304

THS8083

100Pin

3 CXA-R/G/B(A )

IC401

MX88L284

3X2M

Scan converter

208Pin

IC401

MX88L284

3X2M

Scan converter

208Pin

IC001

M37270

EEPROM

IC001

M37280

EEPROM

Micro-Com

IC403

2M

SDRAM

IC402

2M SDRAM

(R/G/B)(D)

CAX-HS/VS

2

2

16

D0-16

A0-10

D16-31

11

16

OSD_R/G/B/YS

4

IC501

74F541

IC502

74F541

IC503

74F541



IC504

74F541

OSD_HS/VS

2

HS/VS_OUT

2

8

DOR0-7

8

DOG0-7

8

DOB0-7

STB-POWER

(A) : Analog Signal

(D) : Digital Signal

VSC DET/POWER

HDSTB_DET

STB_SCL/SDA

ANA_STB_DET

7

PVS/PHS_OUT

2

PAR0-7

8

PAG0-7

8

PAB0-7

8

PD501

(41Pin)

PDP Module

(D)

3X8

Multi-Component Processor

(Baseband Video Signal Processor)

STB, PC, DTV, TV Analog R/G/B

D-sub

25

D-sub

15

IC604

LA7222

(Audio S/W)

(A)

P601

L/R

STB/PC/DTV1

AV/DVD/DTV2

IC602

CXA2022S

(Tone Control)

IC602

CXA2022S

(Tone Control)

IC603

TDA2616

Audio Amp.

(12Wx2)

IC603

LA4282

Audio Amp.

(12Wx2)

Lout

Rout

P007A

(Spk. Jack)

I C Bus

IC002

24C08