Hitachi PANO0162 Service Manual

DP23/23G/24

SAFETY PRECAUTIONS ......................................................................................................2

TECHNICAL CAUTIONS ......................................................................................................3

SPECIFICATIONS..................................................................................................................4

GENERAL INFORMATION ....................................................................................................5

CUSTOMIZED PICTURE AND SOUND ADJUSTMENTS....................................................6

SERVICE ADJUSTMENTS..................................................................................................17

DC VOLTAGE ......................................................................................................................36

BASIC CIRCUIT DIAGRAM ................................................................................................51

PRINTED CIRCUIT BOARDS ............................................................................................72

BLOCK DIAGRAM ..............................................................................................................74

WIRING DIAGRAM..............................................................................................................76

FINAL WIRING DRAWING ..................................................................................................78

EXPLODED VIEW ..............................................................................................................84

EXPLODED VIEW PARTS LIST ..........................................................................................90

QUICK REFERENCE PARTS LIST ....................................................................................95

REPLACEMENT PARTS LIST ............................................................................................96

DISASSEMBLY INSTRUCTIONS ......................................................................................117

TROUBLESHOOTING BLOCK DIAGRAMS......................................................................125

No. 0162

NTSC

DP23/DP23G/DP24

R/C: CLU-4321UG

SPECIFICATIONS AND PARTS ARE SUBJECT TO CHANGE FOR IMPROVEMENT

JUNE 2002 HHEA-MANUFACTURING DIVISION

51UWX20B DP23 57UWX20B DP23 51GWX20B DP23G 57GWX20B DP23G 43FWX20B DP24

SERVICE MANUAL

This addendum gives differences between DP23/DP23G/DP24 and the DP27/DP27D chassis models. For any other information, see the DP27/DP27D chassis Service Manual PA No. 0160 issued in MAY 2002.

CAUTION: Before servicing this chassis, it is important that the service technician read the

”Safety Precautions” and “Servicing Precautions” in Service Manual PA No. 0160.

PROJECTION COLOR TELEVISION

TO GO TO A CHAPTER, CLICK ON ITS HEADING BELOW

DP23/23G/24

Components having special safety characteristics are identified by a on the schematics and on the parts list in this service manual and its supplements and bulletins. Before servicing this chassis, it is important that the service technician read and follow the “Important Safety Instructions” in this Service Manual.

For continued X-Radiation protection, replace picture tube with original type or Hitachi approved equivalent type.

This Service Manual is intended for qualified service technicians; it is not meant for the casual do-it-yourselfer. Qualified technicians have the necessary test equipment and tools, and have been trained to properly and safely repair complex products such as those covered by this manual. Improperly performed repairs can adversely affect the safety and reliability of the product and may void warranty. If you are not qualified to perform the repair of this product properly and safely, you should not risk trying to do so and refer the repair to a qualified service technician.

WARNING

Lead in solder used in this product is listed by the California Health and Welfare agency as a known reproductive toxicant which may cause birth defects or other reproductive harm (California Health and Safety Code, Section 25249.5).

When servicing or handling circuit boards and other components which contain lead in solder, avoid unprotected skin contact with solder. Also, when soldering do not inhale any smoke or fumes produced.

This television receiver provides display of television closed captioning in accordance with section 15.119 of the FCC rules.

FEDERAL COMMUNICATIONS COMMISSION NOTICE

This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:

• Reorient or relocate the receiving antenna.

• Increase the separation between the equipment and the receiver.

• Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.

• Consult the dealer or an experienced radio/television technician for help.

IMPORTANT SAFETY INSTRUCTIONS

USE ISOLATION TRANSFORMER WHEN SERVICING

DP23/23G/24

High Voltage limiter circuit operation check.

1. Turn off TV and connect jig as shown in Figure 2. Adjust jig fully counter-clockwise for minimum resistance.

2. Set the AC input to 120V AC and turn on TV.

3. Confirm test pattern on CRT is a usable picture, then slowly adjust jig until the picture disappears and TV shuts down.

4. When the limiter circuit is operating properly, High Voltage will be less than 30.5 kV at 1.4mA when TV shuts down.

5. Turn off set immediately after checking circuit operation.

6. Unplug set for one minute to reset shutdown circuit. Remove jig and voltmeter.

TECHNICAL CAUTIONS

(TH01)

WHITE side

GND side

TESTER

C901

R901

EF901

F901

KP01

X901

R903

C981

R980

AC CORD POLARITY

This check is based on the UL standard. Use the jigs specified by the production technology section. The GND side (wider blade) of the AC power cord should be connected to K9Y1

DP23/23G/24

Models: 51UWX20B 51GWX20B

57UWX20B 57GWX20B

43FWX20B

Cathode-Ray Tube:

51/57UWX20B R=P16LXL00RFA(U)

51/57GWX20B G=P16LXL00HHA(U)

B=P16LXL00BMB(U)

43FWX20B R=P16LXS00RFA(U)

G=P16LXS00HHA(U)

B=P16LXS00MBM(U)

Power Input: 120 volts AC, 60 Hz

Power Consumption:

• Stand-By Power

51/57UWX20 . . . . . . . . . . . . . . . . . . .0.96W

43FWX20B/51/57GWX20B . . . . . . . . .0.96W

•Power Consumption (operating)

51/57UWX20 . . . . . . . . . . . . . . . . . . .188W

43FWX20B/51/57GWX20B . . . . . . . . . .203W

•Power Consumption (maximum)

51/57UWX20 . . . . . . . . . . . . . . . . . . .227W

43FWX20B/51/57GWX20B . . . . . . . . . .248W

Antenna Impedance: 75 Ohm Unbalanced

VHF / UHF / CATV

Receiving Channel: BAND CH

VHF 2~13

UHF 14~69

EXT. Mid (A-5)~(A-1), 4+

CATV Mid. A~I

CATV Super J~W

CATV Hyper (W+1)~(W+28)

CATV Ultra (W+29)~(W+84)

Intermediate Frequency: Picture l-F Carrier 45.75 MHz

Sound l-F Carrier 41.25 MHz

Color Sub Carrier 42.17 MHz

Video Input: 1 Volt p-p, 75 Ohm

Video Output: 1 Volt p-p, 75 ohm

Audio Input: 470 mVrms, 47 k Ohm

Stereo Audio Output: 470 mVrms, 1 k Ohm Audio Output Power:

Front: 12 watts per channel at 10% distortion,

8 ohm Impedance. Max output – 24 watts.

Anode Voltage: DP23/DP23G/DP24

30.2±0.3kv (1.20±0.2mA)

Brightness: 51” 57” 43”

(white screen) 220cd/m

180cd/m

300cd/m

Speakers: 2 Woofers - 5 inch (12 cm) round

Dimension:

43” 51” 57”

Height (in.) 38 31/32 50 1/8 54 3/16

Width (in.) 41 7/32 44 1/2 54 1/64

Depth (in.) 20 5/8 25 1/32 25 1/32

Weight (Ibs.) 153 238 265

Circuit Board Assemblies:

C.P. T. (B) P.W.B. IR P.W.B.

C.P. T. (G) P.W.B. IR Sub P.W.B.

C.P. T. (R) P.W.B. Terminal P.W.B.

Power Supply P.W.B. Signal P.W.B.

Control P.W.B. Def/Convergence P.W.B.

Sensor Distribution P.W.B.

CIRCUIT PROTECTION

CAUTION: Below is an EXAMPLE only. See Replacement Parts List for details.The following symbol near the fuse

indicates fast operation fuse (to be replaced). Fuse ratings appear within the symbol.

Example:

SPECIFICATIONS

“RISK OF FIRE - REPLACE FUSE AS MARKED”

The rating of fuse F901 is 6A - 125V. Replace with the same type fuse for continued protection against fire.

6 A 125V

125V

GENERAL INFORMATION

 Antenna Input/Output  S-VIDEO Inputs 3 and 4  Audio/Video Inputs 1, 2, 3 and 4  Component Input Y-P

BPR

 MONITOR OUT  DVI-HDTV Input (Input 1)  AUDIO TO HI-FI Output (UWX and GWX Models Only)













ANT A

TO CONVERTER

ANT B

(MONO)/L

AUDIO TO HI-FI

S-VIDEO

Y/VIDEO

(MONO)/L

(MONO)/L VIDEO

LVIDEO

INPUT 1

INPUT 2

INPUT 3

INPUT 4

MONITOR

OUT

AUDIO

DVI-HDTV













AUDIO TO HI-FI



ANT A

TO CONVERTER

ANT B

(MONO)/L

S-VIDEO

Y/VIDEO

(MONO)/L

(MONO)/L VIDEO

LVIDEO

INPUT 1

INPUT 2

INPUT 3

INPUT 4

MONITOR

OUT

AUDIO

INPUT 5

S-VIDEO

VIDEO

-AUDIO-

L/MONO

EXIT

INPUT

SELECT

MAGIC FOCUS

VOL- VOL+ CH- CH+



POWER

PULL

Models: 51GWX20B/57GWX20B/51UWX20B/57UWX20B

INPUT 3

S-VIDEO

VIDEO

AUDIO

L/MONO

EXIT

INPUT

SELECT

MAGIC FOCUS

VOL- VOL+ CH-

CURSOR









POWER

PUSH

Model: 43FWX20B

CH+

FRONT CONTROL PANEL

REAR PANEL JACKS

DP23/23G/24

REMOTE CONTROL

123

456

789

ANT INFO

VOL CH

POWER

TV CBL/SAT DVD/VCR

PIP

SWAP PIP MODE

FREEZE

VIDEO

PIP CH

MUTE

EXIT

LAST CH

REC

ASPECT

VIRTUAL HD

SELECT

CLU-4321UG

VID1

VID2

VID3 VID4

VID5

CLU-4321UG

DP23/23G/24

Select VIDEO to adjust picture settings and improve picture quality.

THUMB

STICK

THUMB

STICK

SELECT

Setup

Locks

Ch. Manager

Audio

Video

Move

SEL

Sel

Color

Brightness

Contrast

Picture Mode

Video

Move

SEL

Select

Vertical Position

Sharpness

Tint

Advanced Settings

Color System

100%

50%

Magic Focus

Sports

CUSTOMIZED PICTURE AND SOUND ADJUSTMENTS

Use this function to change the contrast between black and white levels in the picture. This adjustment will only affect the picture when ADVANCED SETTINGS DIMMER is OFF.

Use the THUMB STICK  or  to highlight the function to be adjusted. Press the THUMB STICK  or  to adjust the function. Press down on THUMB STICK to select the function settings. Press MENU to return to main menu or select PICTURE MODE to return to previous menu. Press EXIT to quit menu.

Use this function to adjust the level of color in the picture.

Use this function to adjust overall picture brightness.

This function allows you to select when aspect style is either 4:3 EXPANDED/ZOOM1/ZOOM2. Vertical position can be changed with this mode. Adjustable range is -10 (video center is toward bottom of screen) to +10 (video center is toward top of screen).

Contrast

Color

Brightness

Vertical Position

NOTES: 1. If CONTRAST is selected, you are adjusting CONTRAST. The additional menu items BRIGHTNESS, COLOR, TINT,

and SHARPNESS can be selected and adjusted in the same manner.

2. It may be necessary to adjust TINT to obtain optimum picture quality when using the COMPONENT VIDEO Y-PBP R

input jacks.

3. If you are using the COMPONENT VIDEO input jacks (Y-PBPR) and notice that the TINT and COLOR are abnormal,

check to make sure that VIDEO- Color System is set properly.

Use this function to adjust flesh tones so they appear natural.

Tint

Use this function to adjust the amount of fine detail in the picture.

Sharpness

Video

DP23/23G/24

MAGIC FOCUS

Auto Digital Convergence Adjustment

Please turn ON your television for at least 20 minutes before using this feature.

The Magic Focus button will not work when Adjustment Mode is set to Manual (see page 9).

Your HITACHI Projection TV has three color projection tubes: one for red, one for green, one for blue. When mixed together in the proper proportion, the output of these three color tubes can produce any color. To produce these colors, however, the beams must be precisely aligned over each other so that the colors can be mixed. The process of aligning these picture beams is called “convergence”.

Over a period of time, the picture tubes can drift out of alignment due to normal bumps and vibrations or moving the TV. If you move your TV, or if, after a time, you notice color rings or halos around objects in the picture, you may want to converge (align) the colors.

Properly converged, the lines appear white, which is actually a combination of the outputs of the three color tubes. The output of the green tube is stationary. The outputs of the red and blue tubes can be adjusted. When properly aligned, the outputs of all three tubes should be directly over each other to produce the white lines.

To simplify convergence, HITACHI incorporates a function called MAGIC FOCUS located on the front control panel, which allows the TV to self-adjust. Press this MAGIC FOCUS button and the convergence self adjustment will start and this process will take approximately 20 seconds. If this button is pressed during this process, no change in picture quality will occur. After this 20 second self-adjust period, picture quality will be optimum. (Do not move the TV during self-adjust.)

You may also select Magic Focus from the VIDEO menu.

Magic Focus

NOTES: Only a momentary press of the MAGIC FOCUS button is necessary to start AUTO DIGITAL CONVERGENCE. At any

time during this convergence correction process, you may press the MAGIC FOCUS button to exit the MAGIC FOCUS mode. However, the convergence correction process needs to be completed to SAVE the new corrected convergence data.

Magic Focus

Video

Move

SEL

Return

Aligns the Red, Green, and Blue colors to correct for Magnetic Influences.

Auto

Manual

THUMB

STICK

THUMB

STICK

SELECT

Setup

Locks

Ch. Manager

Audio

Video

Move

SEL

Sel

Color

Brightness

Contrast

Picture Mode

Video

Move

SEL

Select

Vertical Position

Sharpness

Tint

Advanced Settings

Color System

100%

50%

Magic Focus

Sports

THUMB

STICK

SELECT

Adjustment Mode

If you want to adjust now

THUMB

STICK

THUMB

STICK

SELECT

Start

MAGIC FOCUS

CUSTOMIZED PICTURE AND SOUND ADJUSTMENTS

DP23/23G/24

NOTES: 1. Please turn ON your television for at least 20 minutes before using this feature.

2. Auto Adjustment Mode is recommended. If convergence is still not acceptable, use the Manual Adjustment Mode. DO NOT press MAGIC FOCUS or use Auto Adjustment Mode after using Manual Adjustment Mode.

Manual Convergence Adjustment Mode

Using the Remote Control, select VIDEO-MAGIC FOCUS-MANUAL ADJUSTMENT MODE-START to access convergence crosshatch pattern. The adjustment point is indicated by the Adjustment Point Cursor.

To Move Adjustment Point

To move adjustment point, the Adjustment Cursor must be WHITE. Use the THUMB STICK to move the Adjustment Cursor. Another way to move the Adjustment Point Cursor is to press the followiing buttons: [2] up, [4] left, [5] down, [6] right. If you use the number buttons while the adjustment point is WHITE, it will change to RED.

To Change the Color of Adjustment Point

Press the SELECT button repeatedly (WHITE-RED-BLUE-WHITE...). Green color is fixed and cannot be adjusted.

To Adjust the Convergence

Move the Adjustment Cursor to the point to be adjusted. Use the THUMB STICK to match the RED and BLUE colors to GREEN (reference color). Properly aligned, all three colors should appear white.

If convergence is acceptable after Manual Convergence adjustment, press EXIT button to access menu mode.

Press the [1] button on the remote control to SAVE adjusted data and return to main picture. Press the [2] button on the remote control to CANCEL adjusted data and return to main picture. Press the [3] button on the remote control to recall the factory pre-set convergence data. Press the [4] button on the remote control to return to the manual convergence adjustment mode (crosshatch pattern). Press the [9] button on the remote control to read the SAVED data.

Magic Focus

Video

Move

SEL

Return

Aligns the Red, Green, and Blue colors to correct for Magnetic Influences.

Auto

Manual

THUMB

STICK

THUMB

STICK

SELECT

Setup

Locks

Ch. Manager

Audio

Video

Move

SEL

Sel

Color

Brightness

Contrast

Picture Mode

Video

Move

SEL

Select

Vertical Position

Sharpness

Tint

Advanced Settings

Color System

100%

50%

Magic Focus

Sports

THUMB

STICK

SELECT

Adjustment Mode

If you want to adjust now

THUMB

STICK

THUMB

STICK

SELECT

Start

EXIT

DONE : [1] CANCEL : [2] INI. RESET : [3] BACK : [4]

CUSTOMIZED PICTURE AND SOUND ADJUSTMENTS

DP23/23G/24

Select AUDIO to adjust the TV to your preference and to improve the sound quality.

Audio

THUMB

STICK

THUMB

STICK

SELECT

THUMB

STICK

SELECT

Setup

Locks

Ch. Manager

Audio

Video

Move

SEL

Sel

Next/Prev Change Value Return

SEL

Sound Enhancement

Balance

Bass

Treble

Audio

Move

SEL

Return

50%

Sound Enhancement

Balance

Bass

Treble

Audio

Move

SEL

Select

50%

Treble

50%

THUMB

STICK

Advanced Settings

This function controls the low frequency audio to all speakers.

Use THUMB STICK to highlight functions. Press down on THUMB STICK to select the function setting. Press THUMB STICK  or  to adjust the function. Press EXIT to quit MENU, or select Audio to return to the main menu.

NOTE: If TREBLE is selected you are adjusting treble. The additional menu items Bass and Balance can be selected

and adjusted in the same manner.

This function controls the high frequency audio to all speakers.

This function will control the left to right balance of the TV internal speakers and the AUDIO TO HIFI output.

Bass

Balance

Treble

CUSTOMIZED PICTURE AND SOUND ADJUSTMENTS

DP23/23G/24

REAR PANEL CONNECTIONS

NOTE: 1.

Connect only 1 component to each input jack.

2. Follow connections that pertain to your personal entertainment system.

3. Standard video signal (Composite Video) can be input to all video inputs (Video1~Video5).

TYPICAL FULL-FEATURE SETUP

(51/57UWX20B and 51/57GWX20B MODELS)

Outside antenna or cable TV coaxial cable

2-Way signal splitter

ANT A

TO CONVERTER

ANT B

AUDIO TO HI-FI

DVD Player

B/CBPR/CR

OUTPUT

INPUT 1

INPUT 2

INPUT 3

INPUT 4

MONITOR

OUT

L R

AUDIO

DVI-HDTV

(MONO)/L

AUDIO

(MONO)/L

AUDIO

(MONO)/L VIDEO

L VIDEO

Y/VIDEO

HDTV Set-Top Box

Y P

S-VIDEO

OUTPUT

L R

ANT IN

OUTPUT CAPABILITY

DIGITAL OUTPUT

VCR #1

OUTPUT

VL R

S-VIDEO

DIGITAL

OUTPUT

INPUT

Cable TV Box

LR INPUT

S-VIDEO

VCR #2

V L R

INPUT

Stereo System Amplifier

V L R

S-VIDEO

OUTPUT

Laserdisc player, VCR, camcorder, etc.

DP23/23G/24

REAR PANEL CONNECTIONS

NOTE: 1.

Connect only 1 component to each input jack.

2. Follow connections that pertain to your personal entertainment system.

3. Standard video signal (Composite Video) can be input to all video inputs (Video1~Video5).

Outside antenna or

TYPICAL FULL-FEATURE SETUP

(43FWX20B)

cable TV coaxial cable

2-Way signal splitter

ANT A

TO CONVERTER

ANT B

AUDIO TO HI-FI

DVD Player

B/CBPR/CR

OUTPUT

INPUT 1

INPUT 2

INPUT 3

INPUT 4

MONITOR

OUT

L R

AUDIO

(MONO)/L

AUDIO

(MONO)/L

AUDIO

(MONO)/L VIDEO

L VIDEO

Y/VIDEO

HDTV Set-Top Box

Y P

S-VIDEO

OUTPUT

L R

VCR #1

OUTPUT

ANT IN

S-VIDEO

VL R

OUTPUT

INPUT

Cable TV Box

INPUT

S-VIDEO

VCR #2

V L R

INPUT

Stereo System Amplifier

V L R

S-VIDEO

OUTPUT

Laserdisc player, VCR, camcorder, etc.

DP23/23G/24

CONNECTING EXTERNAL VIDEO SOURCES

CONNECTING A STEREO SOURCE TO INPUT2~INPUT5

1. Connect the cable from the VIDEO OUT of the VCR or the laserdisc player to the INPUT (VIDEO) jack, as shown on the TV set below.

2. Connect the cable from the AUDIO OUT R of the VCR or the laserdisc player to the INPUT (AUDIO/R) jack.

3. Connect the cable from the AUDIO OUT L of the VCR or the laserdisc player to the INPUT (AUDIO/L) jack.

4. Press the VID2~VID5 button to view the program from the VCR or laserdisc player. The VIDEO label disappears automatically after approximately four seconds.

5. Press the ANT button to return to the previous channel.

NOTES: 1. Completely insert the connection cord plugs when connecting to rear panel jacks. The picture and sound that is

played back will be abnormal if the connection is loose.

2. A single VCR can be used for VCR #1 and VCR #2, but note that a VCR cannot record its own video or line output. (INPUT: 3 in example on page 11 or 12) Refer to your VCR operating guide for more information on line input-output connections.

VCR

OUTPUT

RL V

ANT A

TO CONVERTER

ANT B

(MONO)/L

S-VIDEO

Y/VIDEO

(MONO)/L

(MONO)/L VIDEO

L VIDEO

INPUT 1

INPUT 2

INPUT 3

INPUT 4

MONITOR

OUT

VCR

OUTPUT

RL V

ANT A

TO CONVERTER

ANT B

(MONO)/L

S-VIDEO

Y/VIDEO

(MONO)/L

(MONO)/L VIDEO

L VIDEO

INPUT 1

INPUT 2

INPUT 3

INPUT 4

MONITOR

OUT

AUDIO

AUDIO TO HI-FI

AUDIO

AUDIO TO HI-FI

DVI-HDTV

Models: 51/57UWX20B

51/57GWX20B

Model: 43UWX20B

DP23/23G/24

CONNECTING EXTERNAL VIDEO SOURCES

CONNECTING AN S-VIDEO SOURCE TO INPUT 3, 4 AND 5

1. Connect the cable from the S-VIDEO OUT of the VCR or the laserdisc player to the INPUT (S-VIDEO) jack, as shown on the TV set below.

2. Connect the cable from the AUDIO OUT R of the VCR or the laserdisc player to the INPUT (AUDIO/R) jack.

3. Connect the cable from the AUDIO OUT L of the VCR or the laserdisc player to the INPUT (AUDIO/L) jack.

4. Press the VID3~VID5 button to view the program from the VCR or laserdisc player. The VIDEO label disappears automatically after approximately four seconds.

5. Press the ANT button to return to the previous channel.

NOTES: 1. Completely insert the connection cord plugs when connecting to rear panel jacks. The picture and sound that is

played back will be abnormal if the connection is loose.

Model: 43FWX20B

Models: 51/57UWX20B

51/57GWX20B

ANT A

TO CONVERTER

ANT B

AUDIO TO HI-FI

INPUT 1

INPUT 2

INPUT 3

INPUT 4

MONITOR

OUT

(MONO)/L

AUDIO

(MONO)/L

AUDIO

(MONO)/L VIDEO

L VIDEO

AUDIO

OUTPUT

RL V

VCR

Y/VIDEO

S-VIDEO

ANT A

TO CONVERTER

ANT B

AUDIO TO HI-FI

INPUT 1

INPUT 2

INPUT 3

INPUT 4

MONITOR

OUT

DVI-HDTV

(MONO)/L

AUDIO

(MONO)/L

AUDIO

(MONO)/L VIDEO

L VIDEO

AUDIO

OUTPUT

RL V

VCR

Y/VIDEO

S-VIDEO

DP23/23G/24

CONNECTING EXTERNAL VIDEO SOURCES

CONNECTING A COMPONENT SOURCE WITH DVI-HDTV CAPABILITY TO INPUT 1.

1. Connect the DVI connection cable from the output of the HDTV set top box or DVD player to the DVI-HDTV input as shown on the TV set at right.

2. Connect the cable from the AUDIO OUT R of the HDTV set top box or DVD player to the INPUT (AUDIO/R) jack.

3. Connect the cable from the AUDIO OUT L of the HDTV set top box or DVD player to the INPUT (AUDIO/L) jack.

4. Press the VID1 button to view the program from theHDTV set top box or DVD player. The VIDEO label disappears automatically

after approximately four seconds.

5. Press ANT button to return to the previous channel.

DVI-HDTV

ANT A

TO CONVERTER

ANT B

(MONO)/L

AUDIO TO HI-FI

S-VIDEO

Y/VIDEO

(MONO)/L

(MONO)/L VIDEO

L VIDEO

INPUT 1

INPUT 2

INPUT 3

INPUT 4

MONITOR

OUT

DIGITAL

OUTPUT CAPABILITY

DIGITAL OUTPUT

OUTPUT

AUDIO

Models: 51/57UWX20B

51/57GWX20B

DP23/23G/24

CONNECTING EXTERNAL VIDEO SOURCES

CONNECTING A COMPONENT SOURCE TO INPUT 1 OR 2: Y-PBPR.

1. Connect the cable from the Y OUT of the Laserdisc/DVD player or HDTV set top box to the INPUT (Y) jack, as shown on the TV set at right.

2. Connect the cable from the CB/PBOUT or B-Y OUT of the Laserdisc/DVD player or HDTV set top box to the INPUT (PB)jack.

3. Connect the cable from the CR/PROUT or R-Y OUT of the Laserdisc/DVD player or HDTV set top box to the INPUT (PR) jack.

4. Connect the cable from the AUDIO OUT R of the Laserdisc/DVD player or HDTV set top box to the INPUT (AUDIO/R) jack.

5. Connect the cable from the AUDIO OUT L of the Laserdisc/DVD player or HDTV set top box to the INPUT (AUDIO/L) jack.

6. Press the VID1~VID2 button, to view the program from the Laserdisc/DVD player or HDTV set top box. The VIDEO label disappears automatically after approximately four seconds.

7. Press the ANT button to return to the previous channel.

NOTE: Completely insert the connection cord plugs when connecting to rear panel jacks. The picture and sound that is

played back will be abnormal if the connection is loose.

DVI-HDTV

DVD Player

OUTPUT

RPB

L R

AUDIO

ANT A

TO CONVERTER

ANT B

(MONO)/L

S-VIDEO

Y/VIDEO

(MONO)/L

(MONO)/L VIDEO

L VIDEO

INPUT 1

INPUT 2

INPUT 3

INPUT 4

MONITOR

OUT

DVD Player

OUTPUT

RPB

L R

AUDIO

ANT A

TO CONVERTER

ANT B

(MONO)/L

S-VIDEO

Y/VIDEO

(MONO)/L

(MONO)/L VIDEO

L VIDEO

INPUT 1

INPUT 2

INPUT 3

INPUT 4

MONITOR

OUT

AUDIO TO HI-FI

Model: 43FWX20B

Models: 51/57UWX20B

51/57GWX20B

DP23/23G/24

1717

SERVICE ADJUSTMENTS

1. ASSEMBLED P.W.B ADJUSTMENT..................................................................................................................18

1-1. PIP Key Operation ..................................................................................................................................18

2. FINAL ASSEMBLY ADJUSTMENT (Adjustment should be according to below order) ..............................20

2-1. Cut Off Adjustment..................................................................................................................................20

2-2. DCU Phase Data Setting ......................................................................................................................20

2-3. Raster Position........................................................................................................................................20

2-4. Vertical Size ..........................................................................................................................................21

2-5. Horizontal Size ......................................................................................................................................21

2-6. Lens Focus..............................................................................................................................................21

2-7. Digital Convergence ..............................................................................................................................23

2-7-1. Magic Focus Character Set Up ....................................................................................................24

2-7-2. Magic Focus Pattern Set Up ........................................................................................................24

2-7-3. Convergence Jig Screen Specification ........................................................................................26

2-7-4. Raster Position Adjsutment ..........................................................................................................27

2-7-5. Convergence Point Adjustment ....................................................................................................27

2-7-6. Magic Focus Initialize....................................................................................................................28

2-8. Blue Defocus ..........................................................................................................................................29

2-9. White Balance ........................................................................................................................................29

2-10. Raster Distortion Check ........................................................................................................................32

3. ADJUSTMENT POINT ........................................................................................................................................34

3-1. Control PWB (DP23/DP23G) ..................................................................................................................34

Control PWB (DP24) ..............................................................................................................................35

*IMPORTANT For many of the above adjustments, it is necessary to have an HDTV (1080i or 720P) signal generator, SDTV (480P) signal generator, as well as the usual NTSC (480i) signal generator. Hitachi recognizes that few companies offer HDTV or SDTV signal generators and that the cost of these generators is sometimes prohibitive. For this reason, we suggest the use of a set-top-box for HDTV and SDTV adjustments. Usually, there is a switch on the set-top-box which enables it to output HDTV (1080i or 720P) or SDTV (480P) signals even with no input. In this case, the sync is automatically detected by the TV (at the Y-P

BPR

Inputs on the rear panel).

TO GO TO A SECTION, CLICK ON ITS HEADING BELOW

DP23/23G/24

1818

181818

PIP Key Operation FWX/GWX/UWX Model

Main

ANT A

SUB

Main

1080i

Main

All

Sub

All

Main

NTSC

480i

PIP Key

Main

PIP Key

NTSC 480i

Main

Moving

SUB

Main

Moving

Sub

Frozen

Main

NTSC

480i

PIP Key

Main

PIP Key

Sub Frozen

Sub Strobe

FREEZE Key Operation FWX/GWX/UWX Model

BACK TO ADJUSTMENTS

DP23/23G/24

PIP Key Operation FWX/GWX/UWX Model PIP ON Mode

Main

ANT A

SUB

Main

All

Sub

All

Main

NTSC

480i

NTSC 480i

Main

Moving

SUB

Main

Moviing

Main

1080i

PIP Mode key

Rating On

PIP Mode key

Main

Moving

Sub

Frozen

PIP Mode key

Sub Strobe

Sub Frozen

FREEZE Key Operation FWX/GWX/UWX Model FREEZE Mode

BACK TO ADJUSTMENTS

2.3 Raster position adjustment

Adjustment prepar

ation (1) The set can face east or west. (2) Input the single cross test signal. (3) Set video conditions to factory preset. (4) The static focus should have been coarse

adjusted.

(5) The digital convergence RAM should be cleared

(uncorrected state). With the TV set off, press and hold the service switch located on the DEF./CONV. PWB and then press the power button.

(6) Start adjustment 20 minutes or more after TV is

turned on.

Adjustment procedure (1) Turn the centering magnets for red, green, and

blue to satisfy the condition below. The red and blue horizontal lines should match with green.

(RED) (BLUE)

43” 25 30

51” 20 35

57” 20 35

Tolerance: ± 2mm

Geometric center of the screen

(2) Upon completion of adjustment, fix centering

magnets with white paint.

NOTES: (1) If internal cross-hatch does not appear

after clearing RAM data, press service switch again.

(2) To restore old RAM data, turn TV off and

on.

Units = millimeters

25.4mm = 1in.

DP23/23G/24

2. FINAL ASSEMBLY ADJUSTMENT

2.1 Cut Off Adjustment

Adjustment preparation (1) Adjust screen VR’s on Focus Pack fully

counterclockwise.

(2) Adjust Focus VR’s on Focus Pack fully

clockwise. (3) Set video conditions to factory preset. (4) The vertical incident illumination on the screen

should be 20 lux or less (room should be dark).

Adjustment procedure (1) Press and hold INPUT key on control panel and

then POWER ON to access I

C adjustment

mode. (2) Choose “SERVICE” item from I

C adjustment

menu by pressing THUMB STICK . (3) Screen VR should be turned clockwise gradually

and set so that retrace line begins to appear. (4) Return to “NORMAL” mode by THUMB STICK 

again. (5) Adjust Focus VR’s so that focus is even all

around screen.

2.2 DCU Phase Data Setting

Adjustment preparation (1) Cut off adjustment should be finished. (2) Set video conditions to factory preset.

Adjustment procedure (1) Receive any NTSC signal. (2) Push “SERVICE ONLY” SW on DEF./CONV.

PWB. (Enter to DCU ADJ. mode).

(3) Push VID2 KEY IN [CBL/SAT] on R/C. (Green

cross hatch is displayed).

Then push EXIT key on R/C. (Character pattern

is displayed. This is the PHASE setting mode). (4) Set PH-H phase data as shown below by using

4 and 6 key on R/C.

(5) Set PH-V phase data as shown below by using

2 and 5 key on R/C.

(6) Set CR-H phase data as shown below by using

THUMB STICK  and  key on R/C.

(7) Set CR-V phase data as shown below by using

THUMB STICK and  key on R/C.

(8) Push VID2 KEY IN [CBL/SAT] on R/C to exit

from the PHASE mode.

(9) Push PIP MODE key 2 times on R/C to write the

phase data to memory.

(10) When Green dots are displayed, push MUTE

key to return to DCU ADJ. mode.

(11)Push “SERVICE ONLY” SW to return to RF or

VIDEO mode.

PHASE MODE

PH-H :CD

PH-V: 04 CR-H: 35 CR-V: 0A

Static Focus VR

Screen VR

Focus VR

Screen VR

FOCUS PACK

BACK TO ADJUSTMENTS

Adjustment procedure (1) Receive any NTSC signal. (2) Press the SERVICE ONLY SW on DEF./CONV.

PWB and POWER to display DCU uncorrected converge data.

(3) Locate the horizontal size VR (R711 on

POWER/DEF PWB). Adjust horizontal size to the table below.

Notes: (1) Once Normal mode Horizontal size adj. is

done. To restore old RAM data, turn TV off and on.

(2) After adjustment, press SERVICE ONLY

switch to exit DCU crosshatch.

(3) H. SIZE adjustment is only done in

NORMAL MODE (NTSC).

NORMAL MODE

43” 870

51” 1020

57” 1140

Tolerance: ± 5mm

2.5 Horizontal size adjustment

Adjustment preparation (1) The set can face east or west. (2) Set video conditions to factory preset. (3) The STATIC FOCUS adjustment should have

been coarse adjusted. (4) Convergence should not be corrected. (5) Start adjustment 20 minutes or more after TV is

turned on.

The 6th line from center

Between the vertical lines at the left and right end.

Units = millimeters

25.4mm = 1in.

Notes:(1) If internal cross-hatch does not

appear after clearing RAM data, press service switch again (on DEF./CONV. PWB).

(2) To restore old RAM data, turn TV

off and on.

(3) V-Size is only done in NORMAL

mode (NTSC).

NORMAL MODE

43” 460

51” 560

57” 625

Tolerance: ± 5mm

2.4 Vertical size adjustment

Adjustment preparation (1) The set can face east or west. (2) Set video conditions to factory preset. (3) Convergence should not be corrected. (4) Start adjustment 20 minutes or more after TV is

turned on.

Adjustment procedure

(1) Receive any NTSC signal. (2) Press the SERVICE ONLY SW on DEF./CONV.

PWB and POWER to display DCU uncorrected convergence data.

Between the horizontal lines at the top and bottom

(3) Locate the vertical size VR (R607) on

DEFLECTION PWB. Adjust the vertical size according to the following table.

The 5th line from center

Units = millimeters

25.4mm = 1in.

DP23/23G/24

(Be careful the lens cylinder does not turn after having tightened the screw or wing nuts. If it is tightened too much, lens may tilt or screw may break.)

(2) Apply covers to each color of R, G and B lenses.

And project a single color on the screen and adjust in sequence. (The adjustment order of G, R and B is only an example.)

(3) If the lens adjustment knob is turned clockwise

viewed from the front, the color Aberration change as follows.

(NOTE 1)

Fixing Screw

(NOTE 2)

Fixing Wing Nut

TYPE 1 TYPE 2

Lens Assy

Adjustment procedure (1) Loosen the fixing screw or wing nut on the lens

cylinder so that the lens cylinder can be turned. (Be careful not to loosen too much). After completing steps (4), (5), (6) below, tighten the fixing screws or wing nuts for each lens with a torque of 1.18N.m (12Kgf cm) ~ 1.67N.m (17Kgf cm).

2.6 LENS FOCUS ADJUSTMENT

Adjustment preparation (1) The orientation of PTV set is arbitrary, west,

east, north and south.

(2) Centering DY inclination should have been

adjusted.

(3) Static focus adjustment should have been

coarse adjusted.

(4) Drive VR location adjustment should have been

completed. (Red : 12 O’clock, Green : 1~2

O’clock). (5) Receive the cross-hatch pattern signal. (6) Refer to setup below.

CONTRAST : HALF of full scale.

BRIGHTNESS : minimum

BACK TO ADJUSTMENTS

DP23/23G/24

OPTICAL FOCUSING ADJUSTMENT RED

(6) In case of B lens. Set the position where the

chromatic aberration changes from purple to green. As shown below, observe the vertical bright line and adjust lens focus where the purple or green chromatic aberration slightly appears inside and purple or green outside (reference value : 1~3mm) at the point specified in table below. Change the signal and fineadjust in the same way as the G lens.

NOTE: Setting the center between Red and crimson

is optimum.

(5) In case of R lens. Set the position where the

chromatic aberration changes from red to crimson. As shown below, observe the vertical bright line and adjust lens focus where the crimson or red chromatic aberration slightly appears inside, and crimson or red outside (reference value : 1~3mm) at the point specified in table below. Change the signal and fineadjust the same way as the G lens.

OPTICAL FOCUSING ADJUSTMENT GREEN

Change the signal to the circle pattern and fine adjust. Observe the corner part of the screen, especially observe number in the small circle when adjusting. If the focus performance at the screen center exceeds the lower limit, it is acceptable.

CHASSIS DP24 DP23/DP23G

SCREEN SIZE 43” 51” 57”

L1 and L2

(PITCHES from CENTER) 3.0 1.0 1.0

BETWEEN

L1&L2 * * *

COLOR * * *

ABERRATION I 3.0mm MAX 2.0mm MAX 3.0mm MAX

****

O 3.0mm MAX 3.5mm MAX 3.0mm MAX

(NOTE) * Slightly reddish or no color

** Slightly bluish or no color

Small circle of circle pattern

NOTES: 1. Since the G light is very important for

picture quality and performance, pay special attention in its adjustment.

2. Be careful not to touch the lens with your fingers when adjusting.

CHASSIS DP24 DP23/DP23G

SCREEN SIZE 43” 51” 57”

L1 and L2

(PITCHES from CENTER) 3.0 3.0 3.0

BETWEEN

L1&L2 * * *

COLOR * * *

ABERRATION I 3.5mm MAX 2.0mm MAX 3.0mm MAX

** ** *

O 3.5mm MAX 2.0mm MAX 3.0mm MAX

(NOTE) * Slightly reddish or no color

** Slightly crimson or no color

Color

Aberration

Cross-Hatch

Change of Color Aberration

Short focus Long focus

RED LENS Orange Scarlet

GREEN LENS Blue Red

BLUE LENS Purple Green

(4) In case of G lens. Set to the point where the

chromatic aberration switches from blue to red. If the chromatic aberration appearing all over the screen is not the same, observe the vertical bright line and adjust lens focus as specified in table below. When the red chromatic aberration appearing at both sides of the bright line is not equal, observe the side with larger chromatic aberration when adjusting.

BACK TO ADJUSTMENTS

DP23/23G/24

NOTE: Setting to the center between purple and

crimson is optimum.

(7) After all colors have been adjusted, display all

colors with the cross-hatch pattern signal and check the focus performance.

(8) Then, select the circle pattern signal and check

the focus performance of each color and all colors together.

(9) If the focus performance is not acceptable re-

adjust step (1) to (6).

OPTICAL FOCUSING ADJUSTMENT BLUE

CHASSIS DP24 DP23/DP23G

SCREEN SIZE 43” 51” 57”

L1 and L2

(PITCHES from CENTER) 3.0 3.0 3.0

BETWEEN

L1&L2 * * *

COLOR * * *

ABERRATION I 3.5mm MAX 2.0mm MAX 3.0mm MAX

****

O 3.5mm MAX 2.0mm MAX 3.0mm MAX

(NOTE) * Slightly reddish or no color

** Slightly greenish or no color

2.7 Digital convergence adjustment

Note: 1. If replacing a PRT, DY, etc. perform auto-

digital convergence first. (Press front panel MAGIC FOCUS switch.) This can eliminate the need for a complete digital convergence alignment.

2. To enter digital convergence adjustment mode without removing the front speaker grill, please do the following:

1) Press “Magic Focus” button on the front panel.

2) While “Magic Focus” is running, press Magic Focus button again to “Stop”.

3) Press INFO button after “STOP” OSD appears on the screen to enter digital convergence mode.

4) Proceed with convergence adjustment and save the data.

5) Do MAGIC FOCUS sensor initialization.

6) To exit, press POWER button on the front panel.

Adjustment prepar

ation (1) Receive an RF or video signal. (2) Set controls to factory preset. (3) Install jig screen on the set. (4) Note the center of the video pattern displayed.

This is necessary to match dotted lines (adjustment point viewed) and actual point that is adjusted and displayed by the video signal.

(5) Press the service only switch (on DEF./CONV.

PWB). The pattern displayed is now the digital convergence mode.

(6) When performing a complete digital

convergence adjustment CLEAR DATA in RAM. (With the TV set off, press and hold the service switch located on the DEF./CONV. P.W.B. and then press the POWER button).

Adjustment Point

BACK TO ADJUSTMENTS

2.7.2 MAGIC FOCUS Pattern Set-Up

NOTE: (1) This instruction should be applied when a

new DCU is being replaced.

(2) This instruction shows how to set up the

pattern position for MAGIC FOCUS.

Parameter Normal Normal ADJ. DISP 77 77 DEMO WAIT 2F 2F INT. START 03 03 V. SQUEEZE F0 F0 INT STEP 1 02 02 INT STEP 2 06 06 INT BAR 28 25 INT DELAY 01 01 MGF STEP 1 00 00 MGF STEP 2 06 06 MGF BAR 1B 1B MGF DELAY 01 01 SEL. STAT. 00 00 LINE WID 1F 1F ADD LINE 09 09 SENSOR CK 00 00 PORT 0 07 07 PORT 1 06 06 PORT 2 05 05 PORT 3 04 04 PORT 4 03 03 PORT 5 02 02 PORT 6 01 01 PORT 7 00 00 AD LEVEL 03 03 CENT. BAL 00 01 E. DISPLAY 00 00 ADJ. TIMS 60 60 AD LEVEL 05 05 AD NOISE 0A 0A PHASE MOT 60 60 H. BLK-RV 00 00 H. BLK-GV 01 01 H. BLK-BV 00 00 H. BLK-H 00 00 PON DELAY 0C 0C IR-CODE 00 00 INITIAL 50 9E 9E MGF 50 96 96 CENTER 50 FE FE STAT 50 FE FE DYNA 50 9F 9F

DP23/DP23G DP24

TABLE 1. - DCU PARAMETER

Adjustment Procedure (1) Receive NTSC RF or video signal. (2) With Power off, PRESS and HOLD the

SERVICE ONLY button on DEF./CONV. PWB, then press the Power On/Off, when picture appears release SERVICE ONLY button. (Internal crosshatch is displayed without conv. correction data.)

DP23/23G/24

2.7.1 MAGIC FOCUS Character Set-Up

This instruction should be applied when a new DCU is being replaced.

Adjustment Prepar

ation (1) Receive NTSC RF or video signal. (2) With Power off, PRESS and HOLD the

SERVICE ONLY button on DEF./CONV. PWB, then press the Power On/Off, when picture appears release SERVICE ONLY switch. (Internal crosshatch is displayed without conv. correction data.)

(3) Press the SWAP button 2 times for ROM READ

operation. Picture will appear with convergence correction data.

Adjustment Procedure

(1) Press FREEZE key on R/C. (One additional line

appears near the top and near the bottom.)

(2) Press PIPCH key, then ADJ. PARAMETER

mode is displayed as following.

(3) Press THUMBSTICK  or  to change the ADJ.

DISP. data.

(4) Press THUMBSTICK  to access DCU

Parameter. Change the data as shown on Table 1 - DCU Parameter Data.

(5) Press PIP MODE key 2 times to write changed

data into EEPROM. (First press ADJ. PARAMETER/ROM WRITE? is displayed for alarm. 2nd press, writes data into EEPROM. Green dots appear after completion of operation.)

(6) Press MUTE key 3 times to exit from ADJ.

PARAMETER mode.

ADJ. PARAMETER ADJ. DISP.: 77 DEMO WAIT: 2F INT. START: 03 V. SQUEEZE: F0

BACK TO ADJUSTMENTS

DP23/23G/24

(7) Press PIP MODE key 2 times to write the changed

data in EEPROM. (First press, ADJ. PATTERN/ROM WRITE ? 2nd press, writes data into EEPROM. Green dots appear after completion of operation.)

(8) Press MUTE key to exit from PATTERN mode.

Adjustment Procedure (1) Press FREEZE key on R/C. (One addtional line

appears near the top and near the bottom.)

(2) Press VID2 key in [CBL/SAT] on R/C, then MAGIC

FOCUS PATTERN mode is displayed as follows:

(3) Use [6] key on remote control to rotate the arrow.

Arrow indicates each sensor position. (Upper left corner, middle top, upper right corner, right middle, in this order).

(4) Use the keys to switch color of pattern.

INFO : Green pattern 0 : Red pattern ANT : Blue pattern

(5) Press THUMBSTICK  or  to change the data

value to the horizontal direction. Press THUMBSTICK  or  to change the data value to the vertical direction.

(6) Set the data as shown below:

RH : 0A RV : FF

0123 4567 RH 04 02 FC FE FC 02 02 02 RV 03 00 07 01 FB 01 FE 01 GH 04 00 FE 00 FE 00 02 02 GV 04 00 06 01 FC 01 FE 01 BH 06 FE FC 00 FE FE 04 02 BV 06 00 04 01 FE 01 FB 01

Pattern Position

Normal Mode (DP23/DP23G)

0123 4567 RH 04 02 FE 00 FE 02 04 02 RV 03 01 06 01 FC 01 FF 01 GH 04 00 FE 00 FE 00 02 02 GV 04 01 05 01 FD 01 FD 01 BH 04 FE FE 02 00 FE 04 02 BV 06 01 04 01 FF 01 FD 01

Normal Mode (DP24)

BACK TO ADJUSTMENTS

DP23/23G/24

19.7 90.8 90.8 90.8 90.8 90.8 90.8 90.8 90.8 90.8 90.8 90.8 90.8 19.7

30.5

41.0

30.5

41.0

82.0

1129

635

51UWX20B/51GWX20B (Part Number H312272) 51” DP2X Jig Screen

22 101.5 101.5 101.5 101.5 101.5 101.5 101.5 101.5 101.5 101.5 101.5 101.5 22

34.1

45.8

91.7

1262

710

57UWX20B/57GWX20B (Part Number H312273) 57” DP2X Jig Screen

91.7

45.8

34.1

17.0 76.5 76.5 76.5 76.5 76.5 76.5 76.5 76.5 76.5 76.5 76.5 76.5 17.0

25.7

34.5

25.7

34.5

69.1

952

535

43FWX20B (Part Number H312271)

H312271

H312272

H312273

57” Wide

51” Wide

43” Wide

2.7.3 Convergence Jig Screen Specifications

BACK TO ADJUSTMENTS

DP23/23G/24

Note: If only minor adjustments to convergence are

needed, the jig screen is not necessary. Use digital data stored in memory and one color as a reference (red, green, or blue). DO NOT CLEAR DATA and WRITE to ROM memory.

2.7.4 Raster position adjustment

Adjustment preparation (1) Position adjustment - This will move an entire

color. Use this adjustment to match colors at the center of the screen. (Active video center from external signal and physical screen center should now match from phase adjustment).

(2) Use the buttons below to switch color to adjust.

“INFO” - Green “0” - Red “ANT” - Blue

Adjustment procedure (1) Press the FREEZE button. Extra horizontal lines

appear to confirm raster position mode. (2) Use the thumb stick to adjust position. (3) Press FREEZE again to exit raster position

mode.

Notes: (1) Other functions cannot be accessed when

in raster position adjustment mode. Press FREEZE and confirm extra horizontal lines disappear to exit raster position mode.

(2) Press MENU to remove colors displayed.

2.7.5 Convergence point adjustment

Adjustment prepar

ation

(1) Select color to adjust.

“INFO” - Green

“0” - Red

“ANT” - Blue (2) Use 4, 6, 2, and 5 to move the cursor position

(dotted lines). (3) Use thumb stick to move the convergence point. (4) Three adjustment modes are available:

1. (3x3) Press “INFO” 5 times (only works when DCU is in uncorrected state)

2. (7x5) Press “0” 5 times

3. (13x9) Press “ANT” 5 times

For touch-up, only the (13x9) mode is necessary. This will adjust every cross-hatch intersection point on the screen.

For complete adjustment, start with (3x3) mode. This will adjust center point and eight edge points only, but will greatly reduce adjustment time. Then use (7x5) mode, and finally (13x9) mode to finish convergence.

If “S” distortion appears between cross-hatch lines repeat (7x5) mode to change calculation process while adjusting to remove distortion, then return to (13x9) mode to finish touch-up convergence.

Adjustment procedure (1) Receive any NTSC signal. (2) Start adjustment at the center of the screen. (3) Continue adjustment at next closest position. (4) Adjust center area first, ending with edge sections. (5) Press INFO button to perform calculation operation.

This process will take about 1 second and no picture will be seen at this time.

(6) After interpolation, check convergence again and

repeat (1)-(5) if necessary.

(7) When convergence is acceptable, press PIP MODE

to write data to ROM memory. ROM WRITE? is displayed to alarm system that ROM will be overwritten with new data. Press the PIP MODE button again to write displayed data to ROM.

(8) DATA WRITE TO ROM will take approximately 4

seconds and no picture will be displayed.

(9) Green dots will be displayed when operation is

completed.

(10) Press MUTE to return to convergence pattern, then

confirm again convergence is acceptable.

(11) Press PIP MODE (ROM WRITE) mode, then press

PIP CH to initialize sensor data positions.

Notes: (1) Display only green for easier adjustment and

match to jig screen. Press “MENU”, THEN PRESS “INFO”.

(2) Perform interpolation and data write to ROM

after green adjustment. Once green has been confirmed to match jig screen, the jig screen can be removed. Do not readjust the green color after jig screen has been removed. This is now your reference color.

(3) Display green and red only and match red to

green.

(4) Display all colors and match blue to green and

red. Touch-up red color if necessary.

(5) Existing DATA in ROM can be read by pressing

the SWAP button 2 times. This data can be used after replacing a component (CRT, DY, etc.) Where complete convergence adjustment is not necessary, be careful not to overwrite this data. DO NOT write cleared RAM data into ROM or a complete convergence adjustment will be necessary. Remember to try MAGIC FOCUS before starting convergence adjustment to minimize adjustment time.

(6) To confirm and fine tune the convergence at the

edge of the screen, press the PIP CH button on the remote control while in the digital convergence adjustment mode (DCAM) for additional lines at the edge of the screen. Fine tune the edge convergence as necessary. To exit, press PIP CH again.

BACK TO ADJUSTMENTS

DP23/23G/24

Digital Convergence Remote Control

123

456

789

ANT INFO

VOL CH

POWER

TV CBL/SAT DVD/VCR

PIP

SWAP PIP MODE

FREEZE

VIDEO

PIP CH

MUTE

EXIT

LAST CH

REC

ASPECT

VIRTUAL HD

SELECT

CLU-4321UG

VID1

VID2

VID3 VID4

VID5

ROM READ

PHASE

CALCULATION R/C must be in VCR mode.

GREEN

ADJUSTMENT

CURSOR LEFT

CURSOR DOWN

BLUE (13x9)

REMOVE COLOR

ROM WRITE

RASTER

POSITION

CROSSHATCH

VIDEO

CURSOR UP

CURSOR

RIGHT

RED

(7x5)

INITIALIZE

2.7.6 Magic Focus Initialize

Adjustment Preparation (1) Receive any NTSC signal. (2) Digital convergence adjustment should have been

completed. (3) Set is in DCU adjustment mode. Adjustment Procedure (1) Press “PIP MODE” and then “PIP CH” to initialize

Magic Focus. The initialize operation starts and

several windows appear during this operation. It

takes about 30 seconds or less. (2) When green dots appear, initialize operation is

finished. (3) Turn power OFF on TV set.

REMARKS

Another way to start the initialize operation: (1) Press “SERVICE ONLY” Sw. on DEF./CONV. PWB to

set DCU adj. mode. (2) Press [PIP MODE] key on R/C. Then “ROM

WRITE?” is displayed for alarm. Next, press [PIP

CH] key on R/C to start initialization. When green

dots appear, initalization operation is finished.

NOTE: If there is an error message, red dots or an error

code, refer to page 57, CONVERGENCE

ERRORS.

Initialization Operation

BACK TO ADJUSTMENTS

*INITIAL:N*

DP23/23G/24

Condition: User controls are set to the initial set

positions (for shipment)

Measuring point-Screen center.

STICKING OUT OF BLUE

UNEVENNESS SPECIFICATION: ±1cd/m

Defocus sticking out specification

Screen Size Blue sticking out

43” 1.0mm

51” 1.0mm

57” 1.0mm

2.8 Blue defocus adjustment

Adjustment Preparation (1) Optical and electrical focus adjustment should

have been completed.

(2) The convergence adjustment should have been

completed. (3) Set Video conditions to factory preset. (4) Input the cross-hatch signal.

Adjustment procedure (1) Tu rn the B Focus VR (Focus Pack) fully

clockwise. (2) Adjust sticking out level of blue to specification

shown in table below, by turning the (B) FOCUS

VR counter clockwise.

2.9 White balance adjustment

(1) Screen adjustment (2) High light white balance. (3) Low light white balance.

C data for High light white balance

Green : G DRIVE (HIGH) 3F (initial data)(Adjustable) Red : R DRIVE (HIGH) 3F (initial data)(Adjustable) Blue : on FOCUS PACK UFPK

C data for Low light white balance

Green : G CUT OFF (HIGH) 7F (initial) (Fixed data)

Red : R CUT OFF (HIGH) 7F (initial) (Adj. data)

Blue : B CUT OFF (HIGH) 7F (initial) (Adj. data)

Adjustment Prepar

ation

(1) Adjustment should start 20 min. or more after the TV

power is turned ON.

(2) CUT OFF ADJ. should be finished. (3) VIDEO control : Contrast is MAX., Others are center. (4) Color temp. : HIGH

(5) Signal:

* Hight Light white Balance Adj.

White raster 0.715Vpp (w/o sync., termination incidence : 75ohm.) 100IRE

*Low Light white balance ADJ.

White raster 0.180Vpp (w/o sync., termination incidence : 75ohm.) 25 IRE (The brightness equal to 20cd/m

at screen center on 53” 4:3

model) (6) BLUE defocus ADJ. should be finished. (7) The vertical incident illumination on the screen

should be 20 Lux. or less.

(8) Picture Format is 16:9 Standard Mode. (9) Sub Brightness adjustment should be finished. (10)Go into I

C service mode.

Ta ble 1: White Balance Adjustment Signal

Ta ble 1 shows amplitude of White raster (without sync,

termination impedence: 75ohm).

Adjustment Procedure A. High Light W/B adjustment (1) Receive signal for High Light white balance ADJ. (2) Adjust white balance to 10800K-7 MPCD

(x=0.278±0.004; y=0.280±0.004) at center of screen, using R DRV/ G DRV with remote control.

B. Low Light W/B adjustment (1) Receive signal for Low Light white balance ADJ. (2) Adjust white balance to 21000K-25 MPCD (x

=0.260±0.010, y=0.245±0.010) at center of screen, using R CUT OFF/G CUT OFF/B CUT OFF with remote control. Do not touch screen VRs.

(3) Take Green color as a reference color, then adjust

Low Light W/B by increasing other two colors CUT OFF data. Do not change GREEN CUT OFF data. CA-100 Probe should be set to a direction as shown below.

Repeat A & B two or three times, until no adjustment is needed (white balance tracking-GOOD). If W/B tracking is not good, set all data (Both DRV and CUT OFF) to inital data, and change reference color to different color.

Note: If Low Light adj. spec cannot be followed, apply

previous adj. spec. (adjust by eye.)

Screen Size 43” 51” 57” High light [IRE] 100

[Vpp] 0.715

Low light [IRE] 15.0 17.5 20.0

[Vpp] 0.105 0.123 0.140

Set probe to above direction. (Screw hole side should be on the left side)

Top view of CA-100 Probe

Screen

Screw Hole

Flat Face

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DP23/23G/24

Adjustment preparation

(1) Start adjustment after the power is turned on for

20 minutes or more.

(2) The vertical incident illumination on the screen

should be 20 lux or less. (Room should be dark).

(3) Set the video settings (CONTRAST: max,

others: center) to standard condition.

(4) The blue defocus and cut off adjustments should

be completed.

(5) For low light white balance adjustment, input a

white raster signal level of 0.180 Vp-p (Video input level).

(6) For high light white balance adjustment, input a

white raster signal level of 0.715Vp-p (Video

input level). (7) Confirm R and G Drive (cool) data is 3F. (8) Set Video Advanced Settings-Color Temp-

erature to HIGH.

Adjustment procedure

(1) Select the input signal for high brightness (Video

level = 0.715Vpp). (2) Adjust the high brightness white balance by

changing I

C menu (R and B DRV HIGH mode

only). (3) Select the signal for low brightness (Video level

= 0.105Vpp; 0.123 Vpp; 0.140Vpp) (4) Adjust the low brightness white balance. (5) Check that high brightness white balance is still

obtained. If it is not, return to step (2).

White balance = 10800° K -7 MPCD

Color coordinate = x …… 0.278±0.004

y …… 0.280±0.004

Normal: 7200˚K

Warm: 6500˚K

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