Hitachi C43-FD5000 User manual

CAUTION: Before servicing this chassis, it is important that the service technician read the “Safety Precaution”

and “Safety Notice” in this Service Manual.

SAFETY NOTICE

USE ISOLATION TRANSFORMER WHEN SERVICING

Components having special characteristics are identified by a ! on the schematics and on the parts list in this

service data and its supplements and bulletins. Before servicing the chassis, it is important that the service

technician read and follow the “Safety Precautions” and “Safety Notice” in this Service Manual.

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

SPECIFICATIONS AND PARTS ARE SUBJECT TO CHANGE FOR IMPROVEMENT

CONTENTS

SAFETY NOTICE···························································································· 2

SAFETY PRECAUTIONS··················································································· 3

TECHNICAL CAUTIONS···················································································· 6

SPECIFICATIONS···························································································· 7

CIRCUIT PROTECTION····················································································· 7

GENERAL INFORMATION·················································································· 8

CAUTIONS WHEN CONNECTING/DISCONNECTING THE HV CONNECTOR······················· 10

SERVICE ADJUSTMENTS················································································· 11

TROUBLE SHOOTING······················································································ 51

PROTECTION CIRCUIT BLOCK DIAGRAM······························································ 55

EXPLODED VIEW··························································································· 56

REPLACEMENT PARTS LIST·············································································· 60

BLOCK DIAGRAM··························································································· 96

BASIC CIRCUIT DIAGRAM················································································· 97

PRINTED CIRCUIT BOARD················································································· 112

WIRING DIAGRAM···························································································120

SERVICE MANUAL

MODEL: C43-FD5000 C50-FD5000

MULTI SYSTEM

DP3M CHASSIS

PROJECTION COLOR TELEVISION

D

ec

2

003

P7

966

1

39

A

CODE: FH-0302E

2

SAFETY NOTICE

USE ISOLATION TRANSFORMER WHEN SERVICING

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-yourself. 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.

Improper 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

When servicing or handling circuit boards and other components that contain lead in solder, avoid

unprotected skin contact with solder. Also, when soldering does not inhale any smoke or fumes

produced.

3

SAFETY PRECAUTIONS

1. Before returning an instrument to the customer,

always make a safety check of the entire instrument,

including but not limited to the following items:

a) Be sure that no built-in protective devices are

defective and/or have been deleted during servicing.

(1) Protective shields are provided on this chassis to

protect both the technician and the customer.

Correctly replace all missing protective shields,

including any removal for servicing convenience.

(2) When reinstalling the chassis and/or other

assembly in the cabinet, be sure to put back in place

all protective devices, including but not limited to

nonmetallic control knobs, insulating fish-paper,

adjustment and compartment covers shields, and

isolation resistor/capacitor networks. Do not operate

this instrument or permit it to be operated

without all protective devices correctly installed

and functioning. Service technician who

disregard safety features or fail to perform safety

checks may be liable for any resulting damage.

b) Be sure that there are no cabinet openings through

which an adult or child might be able to insert their

fingers and contact a hazardous voltage. Such

openings include, but are not limited to

(1) spacing between the picture tube and cabinet

mask,

(2) excessively wide cabinet ventilation slots, and

(3) an improperly fitted and/or incorrectly secured

cabinet back cover.

c) Antenna Cold Check - With the instrument AC plug

source, connect an electrical jumper across the two

AC plug prongs. Place the instrument AC switch in

the ON position. Connect one lead of an ammeter to

the AC plug prongs tied together and touch the other

ohmmeter lead to each tuner antenna input,

exposed terminal screw and, if applicable, to the

coaxial connector in sequence. If the measured

resistance is less than 4.0 megohm or greater than

10 megohm, an abnormality exists that must be

corrected before the instrument is returned to the

customer. Repeat this test with the instrument AC

switch in the OFF position.

d) Leakage Current Hot Check - With the instrument

completely reassembled, plug the AC line cord

directly into a 220V outlet. (Do not use an isolation

transformer during this test.) Use a leakage current

tester or a metering system with the instrument AC

switch first in the ON position and then in the OFF

position, measure from a known earth ground (metal

water-pipe, conduit, etc.), to all exposed metal parts

of the instrument (antennas, handle bracket, metal

cabinet, screw heads, metallic overlays, control

shafts, etc.), especially any exposed metal parts that

offer an electrical return path to the chassis. Any

current measured must not exceed 0.7 milliamps.

Reverse the instrument power cord plug in the outlet

and repeat test. (See the following connection

diagram)

AC Leakage Test

ANY MEASUREMENTS NOT WITHIN THE LIMITS

SPECIFIED HEREIN INDICATE A POTENTIAL

SHOCK HAZARD THAT MUST BE ELIMINATED

BEFORE RETURNING THE INSTRUMENT TO THE

CUSTOMER OR BEFORE CONNECTING THE

ANTENNA OR ACCESSORIES

e) High Voltage - This receiver is provided with a hold

down clearly indicating that voltage has increased in

excess of a predetermined value. Comply with all

notes described in this Service Manual regarding

this hold down circuit when servicing, so that this

hold down circuit may correctly be operated.

f) Service Warning - With maximum contrast,

operating high voltage in this receiver is lower than

31.0kV. In case if any component having influence

on high voltage is replaced, confirm that the high

voltage with maximum contrast is lower than 31.6kV.

To measure H.V use a high impedance H.V. meter.

Connect (-) to chassis earth and (+) to the CRT

anode button. (See the following connection

diagram).

Note: Must turn power switch off before the connection

to the anode button is made.

(TH01)

INSTRUMENT

UNDER TEST

4

SAFETY PRECAUTIONS

Fig. 1 X-ray shield plates

g) X-radiation (TUBE) -The primary source of

X-radiation in this receiver is the picture tube. The tube

utilized for the above mentioned function in this

chassis is specially constructed to limit X-radiation

emissions.

For continued X-radiation protection, the replacement

tube must be the same type as the original. HITACHI

approved type.

When troubleshooting and making test measurements

in a receiver with a problem of excessive high voltage,

avoid being unnecessarily close to the picture tube

and the high voltage component.

Do not operate the chassis longer than is necessary

to locate the cause of excessive voltage.

h) X-radiation Shield -This receiver is provided with

X-ray shield plates for protection against X-radiation.

Do not remove X-ray shield plates A, B, C, or D

shown in Fig.1 unnecessarily, when troubleshooting

and/or making test measurements.

To prevent X-radiation, after replacement of picture

tube and lens, confirm these components to be fixed

correctly to bracket and cabinet, and not to be taken

off easily.

5

SAFETY PRECAUTIONS

2. Read and comply with all caution and safety-related

notes on or inside the receiver cabinet, on the

receiver chassis, or on the picture tube.

3. Design Alteration Warning - Do not alter or add to

the mechanical or electrical design of this TV receiver.

Design alterations and additions, including but not

limited to circuit modifications and the addition of

items such as auxiliary audio and/or video output

connectors, might alter the safety characteristics of

this receiver and create a hazard to the user. Any

design alterations or additions may void the

manufacturer’s warranty and may make you, the

servicer, responsible for personal injury or property

damage resulting therefrom.

4. Picture Tube Implosion Protection Warning - The

picture tube in this receiver employs integral

implosion protection. For continued implosion

protection, replace the picture tube only with one of

the same type number. Do not remove, install, or

otherwise handle the picture tube in any manner

without first putting on shatterproof goggles equipped

with side shields. People not so equipped must be

kept safely away while picture tubes are handled.

Keep the picture tube away from your body. Do not

handle the picture tube by its neck.

5. Hot Chassis Warning

a) Some TV receiver chassis are electrically connected

directly to one conductor of the AC power cord and

may be safely serviced without an isolation

transformer only if the AC power plug is inserted so

that the chassis is connected to the ground side of the

AC power source. Confirm that the AC power plug is

inserted correctly with an AC voltmeter by measuring

between the chassis and a known earth ground. If a

voltage reading in excess of 1.0V is obtained, remove

and reinsert the AC power plug in the opposite polarity

and again measure the voltage potential between the

chassis and a known earth ground.

b) Some TV receiver chassis normally have 85V AC

(RMS) between chassis and earth ground regardless

of the AC plug polarity. These chassis can be safely

serviced only with an isolation transformer inserted in

the power line between the receiver and the AC power

source, for both personnel and test equipment

protection.

c) Some TV receiver chassis have a secondary ground

system in addition to the main chassis ground. This

secondary ground system is not isolated from the AC

power line. The two ground systems are electrically

separated by insulating material that must not be

defeated or altered.

6. Observe original lead dress. Take extra care to assure

correct lead dress (the AC supply, high voltage and

antenna wiring) in the following areas:

a) Near sharp edges

b) Near thermally hot parts

Be sure that leads and components do not touch

thermally hot parts. Always inspect in all areas for

pinched, out-of -plate, or frayed wiring; Do not

change spacing between components and the printed

circuit board; Check AC power cord for damage.

7. Components, parts, and/or wiring that appear to have

overheated or are otherwise damaged should be

replaced with components, parts or wiring that meet

original specifications. Additionally, determine the

cause of overheating and/or damage and, if

necessary, take corrective action to remove any

potential safety hazard.

8. PRODUCT SAFETY NOTICE - Many TV electrical

and mechanical parts have special safety-related

characteristics some of which are often not evident

from visual inspection, nor can the protection they

give necessarily be obtained by replacing them with

components rated for higher voltage, wattage, etc.

Parts that have special safety characteristics are

identified by a

! in the replacement parts list. Use of

substitute replacement that does not have the same

safety characteristics as the recommended

replacement part in the parts list might create shock,

fire, and/or other hazards. Product safety is under

review continuously and new instructions are issued

whenever appropriate. For the latest information,

always consult the appropriate current service

literature. A subscription to, or additional copies of

service literature may be obtained at a nominal

charge from manufacturer.

6

TECHNICAL CAUTIONS

High Voltage limiter circuit operation check

1. Turn off TV and delete Resistor RH19（82KΩ）n the PWB .Add jig A to the RH19 position in the PWB，set 50 KΩ

VR fully clockwise(maximum resistance).

2. Set the AC input to 242V AC and turn on TV.

3. Confirm test pattern on PRT is a usable picture，then slowly adjust 50 KΩVR until the picture disappears and TV

shuts down.

4. When the limiter circuit is operating properly, High Voltage will be less than 36.8KV at 1.6mA when TV shuts down.

5. Turn off TV immediately after checking High Voltage limiter circuit operation. Unplug TV for one minute to reset

shutdown circuit. Remove the jig A，and the

n add resistor RH19（82KΩ）to the P.W.B.

Fig.2 High Voltage limiter circuit operation check

FBT

TH01

Jig A

50 KΩ VR

33KΩ

Connect Jig A to P.W.B between RH19.

Deflection/Convergence P.W.B

FBT

RH19

50 KΩ VR

33KΩ

RH17

7

SPECIFICATIONS

CIRCUIT PROTECTION

Fuse (or Device) Circuit Protected Physical Location

F9C1 (T6.3AL/250V) Main Primary Fuse Power PWB

F903 (T3.15AL/250V) Primary Fuse Power PWB

E901 7A Fuse Protector Over Current Protector (Audio +38.5V Power Supply) Power PWB

E902 7A Fuse Protector Over Current Protector (SW +10V Power Supply) Power PWB

E903 4A Fuse Protector Over Current Protector (SW +220V Power Supply) Power PWB

E904 10 A Fuse Protector Over Current Protector (SW +28V Power Supply) Power PWB

E905 10A Fuse Protector Over Current Protector (SW -28V Power Supply) Power PWB

E906 0.5A Fuse Protector Over Current Protector (+B Error AMP) Power PWB

E907 3A Fuse Protector Over Current Protector (+B Power Supply) Power PWB

Model

C43-FD5000 C50-FD5000

Screen size

109cm 127cm

Cathode Ray Tube

R: P16LXL00RFA(C)

G: P16LXL00HHA(C)

B: P16LXL00BMB(C)

R: P16LXL00RFA(C)

G: P16LXL00HHA(C)

B: P16LXL00BMB(C)

Lens HSA SCB

Anode voltage 30.7KV 30.7KV

Power supply

Power consumption

Refer to the values as indicated on the rating label pasted at the back of the TV set.

PAL B.G/I/D.K

SECAM B.G/D.K

NTSC 50

M/NTSC

NTSC3.58-5.5/6.0/6.5

NTSC4.43-5.5/6.0/6.5

RF/VIDEO

PAL/SECAM 60

Reception

system

COMPONENT 525i/525p/625i/625p/750p/1125i

Fre

q

uenc

y

ran

g

e 44MHz-863 MHz

VHF Not less than 250uVReception

se

n

s

itivit

y

U

HF N

o

t l

ess

th

a

n

350u

V

Antenna input impedance 75 Ohm non balance type

S

p

eake

r

Φ12×2 、Φ5×2

Sound out

p

ut

20 W×2

Comb filter 3L(PAL)/3D(NTSC)

Digital convergence Yes Yes

Ma

g

ic focus Yes Yes

Perfect volume Yes Yes

NICAM/A2 Yes Yes

BBE Yes Yes

SRS Yes Yes

P in P Yes Yes

Teletext Yes Yes

S-VIDEO input

1

(

side

)

，2

(

back

)

1

(

side

)

，2

(

back

)

VIDEO input 1 (side)，4(back) 1 (side)，4(back)

Component input

(Y, P

B

/C

B

, P

R

/C

R

)

2 (back) 2 (back)

AUDIO (L, R) input 1 (side)，4(back) 1 (side)，4(back)

VIDEO output

(

MONITOR OUT

)

1(back) 1(back)

AUDIO(L,R)output

(MONITOR OUT)

1(back) 1(back)

Headphone output jack 2 (side) 2 (side)

Variable audio

(

L、R

)

out

p

ut

1(back) 1(back)

Shielding Yes Yes

Memory card slot No No

Weight 55Kg 62.5Kg

Dimension (mm)

(width×depth×height)

969 ㎜×534 ㎜×1237 ㎜ 1119 ㎜×535 ㎜×1362 ㎜

8

GENERAL INFORMATION

Control panel and side panel

POWER

PROGRAM

VOLUME

TV/VIDEO

MENU/RETURN

Power ON/OFF switch

Power/ standby indicator

Remote control sensor

PROGRAM UP/DOWN buttons (When

the menu appears on the screen, press

PROGRAM UP/DOWN buttons to

select the menu up and down.)

VOLUME UP/DOWN buttons (When the

menu appears on the screen, press

VOLUME UP/DOWN buttons to select

the menu right and left.)

MENU/RETURN button

TV/VIDEO selector

POWER

5

I

P

T

U

N

Main headphone jack

Sub headphone jack

Magic focus button

Side panel input jacks

(For AV5 input)

9

GENERAL INFORMATION

REAR PANEL

AUDIO OUT

MONITOR

R

L

OUT

AUDIO

R

LVIDEO

S-VIDEO

VARIABLE

R

(MONO)

L

INPUT 4

INPUT 3

R

L

(MONO)

INPUT 2

L

R

AUDIO

(MONO)

VIDEO S-VIDEO

VIDEO

S-VIDEO

VIDEO

B

C

INPUT 1

P

C

RR

BP

C

AUDIO

R

(MONO)

L

C

P

RR

PB

Y

VIDEO

Y

B

Variable Audio output terminals

A

ntenna terminal

Monitor output terminals

A

udio/Video input & Component

in

p

ut terminals 1

,

2

A

udio/Video input terminals 3,4

10

CAUTIONS WHEN CONNECTING/DISCONNECTING THE HV CONNECTOR

O

L L

L

Perform the following when the

HV connector (anode connector)

is removed or inserted for PRT

replacement, etc.

During Insertion

1. Please refer to direction for insertion as shown in Fig. 4 (L position). Insert connector until “CLICK” sound is heard.

2. Make sure the connector is pressed right in, so that it has a good contact with the spring.

3. Confirm the contact by pulling the connector slightly. (Don’t pull hard because it may damage the connector).

4. Cover the high voltage output by carefully pushing silicon cover onto it. (Don’t turn the connector).

(REMARK)

1. Make sure the silicon cover is

covering the high voltage output.

During Removal

1. Roll out silicon cover from FBT’s contact area slowly.

2. While turning the connector about 90 degrees following the

arrow (from L position to O position), push the connecto

r

slightly towards the case. (Fig .3)

3. Remove the connector slowly by pulling it away from the

case.

Fig. 3 Remove the anode connector

Fig. 4 Insert the anode connector

11

SERVICE ADJUSTMENTS

SERVICE ADJUSTMENT ITEMS

1.ASSEMBLED P.W.B ADJUSTMENT……………………………………………………… (12)

1.1 MEMORY INITIALIZE…………………………………………………………………… (12)

1.2 MAIN AGC ADJUSTMENT………………………………………………………………

(12)

1.3 SUB AGC ADJUSTMENT………………………………………………………………..(13)

2.FINAL ASSEMBLY ADJUSTMENT…………………………………………………………(13)

2.1 CUT OFF ADJUSTMENT……………………………………………………………….. (13)

2.2 RASTER TILT ADJUSTMENT…………………………………………………………..(14)

2.3 DCU PHASE DATA SETTING………………………………………………………….. (14)

2.4 BEAM ALIGNMENT…………………………..…………………………………………..(15)

2.5 RASTER POSITION ADJUSTMENT………..………………………………………….(16)

2.6 SIDE PIN DISTORTION ADJUSTMENT………..……………………………………...(17)

2.7 VERTICAL SIZE ADJUSTMENT………..………………………………………………(18)

2.8 HORIZONTAL SIZE ADJUSTMENT………..…………………………………………. (19)

2.9 TRAPEZOID DISTORTION ADJUSTMENT………..………………………………….

(20)

2.10 BEAM FORM ADJUSTMENT………..………………………………………………...(21)

2.11 LENS FOCUS ADJUSTMENT………..………………………………………………..(21)

2.12 STATIC FOCUS ADJUSTMENT………..……………………………………………..(24)

2.13 DYNAMIC FOCUS CHECK………..…………………………………………………..

(24)

2.14 DIGITAL CONVERGENCE ADJUSTMENT………..………………………………...(25)

2.15 SCANNING AREA CHECK………..…………….…………………………………... ..(34)

2.16 BLUE DEFOCUS ADJUSTMENT………..…………………………………………... (36)

2.17 WHITE BALANCE ADJUSTMENT………..………………………………………..... (36)

2.17.1 CHECK CUT OFF ADJUSTMENT………..……………………………….…..

(36)

2.17.2 WHITE BALANCE ADJUSTMENT………..…………………………………...(36)

2.18 SUB BRIGHTNESS ADJUSTMENT………..………………………………………...

(38)

2.19 SUB PICTURE WHITE BALANCE ADJUSTMENT………..………………………..

(39)

2.20 TINT ADJUSTMENT………..………………………………..……………………….. .(39)

2.21 MAGIC FOCUS INITIALIZE………..…………………………………..………….…..

(40)

2.21.1 MAGIC FOCUS INITIALIZE………..……………………………………….…. (40)

2.21.2 CONVERGENCE ERRORS………..…………………….…………….……... (41)

3. ADJUSTMENT POINT………..…………………………………..………………………....

(42)

3.1 PRT CABINET LOCATIONS…………..…..………………………………………..…..

(42)

3.2 FOCUS PACK………..……………………………………………………………….…..

(42)

3.3 MAIN P.W.B. ………..…………………………………….………………………….…..

(43)

4. SERVICE MENU………..……………………………………………………….…………....(49)

4.1 ADJUSTMENT PROCEDURE………..…………………………………………….….. (49)

4.2 SERVICE MENU………..…………………………………………………………….…..(49)

12

SERVICE ADJUSTMENTS

● Before performing SERVICE ADJUSTMENTS, please refer to the item “TROUBLE SHOOTING”.

1. ASSEMBLED P.W.B ADJUSTMENT

1.1 MEMORY INITIALIZE

Adjustment Procedure by R/C Jig.

(1) Select item No.612 (set2) in service menu, press and hold the [RECALL] key on the remote handset until the

OSD background changes to yellow. (It takes about 3 seconds.)

(2) Wait until the OSD background color becomes normal, this means initialize is completed and each settings

become factory preset condition.

Do not unplug the outlet or perform any key operation until the initialize is completed.

Note: Other method for memory initialize: Link the PRST① and PRST② for longer than 3 seconds.

(3) Change initial-setting values according to the INITIAL-SETTING CHANGE TABLE.

(4) After set the above items in service menu, set to SHIPMENT by following method.

Select

item (set1) in service menu, press the [ENTER] key or [MUTE] key on the remote handset.

(5)

Check the setting state displayed on the upper right of a service menu.

1.2 MAIN AGC ADJUSTMENT

Adjustment Preparation

(1) To prevent circuit temperature drift, the set must apply heat run for more then 10 minutes.

(2) Check the RF signal frequency and level accuracy. (e.g. 623.25MHz, -50dBm)

(3) Confirm the function of antenna attenuation is set to OFF.

N

o. Data V203－007－898C－000112100

Color:PAL Sound:6.5

0: 0

1: 1

2: 0

3: 0

The state of Model Select setting

From the left to the 1st figure：The state of Model Select1

…

From the left to the 9th figure：The state of Model Select9

Items

C43-FD5000 C50-FD5000

1

Model Select1：ASPECT

0 0

2

Model Select2：HD

0 0

3

Model Select3：MULTI_PICTURE

0 0

4

Model Select4：DESTINATION

1 1

5

Model Select5：LANGUAGE

1 1

6

Model Select6：SOUND_SYS/COLOR_SYS

2 2

7

Model Select7：TEXT

1 1

8

Model Select8：PHOTO_MC

0 0

9

Model Select9：LIGHT

0 0

13

SERVICE ADJUSTMENTS

Adjustment Procedure

(1) Receive ch27 China or ch40 CCIR. (623.25MHz, -50dBm) in service mode.

(2) Select item No.11 in service menu by [▲] or [▼] key.

(3-1) When the value of AGC (NO.11 in service menu) is 235 or less than 235.

(3-1-1) Push [►] key of remote control and set AGC value becomes 235 or greater than 235.

(3-1-2) Push the "MUTE" button of remote control, and then AGC adjustment is completed.

(3-2) When the value of AGC (NO.11 in service menu) is 235 or greater than 235.

(3-2-1) Set the value of AGC by [◄] key of remote control to smaller than 235.

(3-2-2) Then push [►] key of remote control and set the AGC value again to greater than and as close as 235.

(3-2-3) Push the "MUTE" button of remote control, and then AGC adjustment is completed.

1.3 SUB AGC ADJUSTMENT

Adjustment Preparation

(1) To prevent circuit temperature drift, the set must be warmed up before alignment longer than 10 minutes.

(2) Check the RF signal frequency and level accuracy. (e.g. 623.25MHz, -50dBm)

Adjustment Procedure

(1) Press [PIP] button to display sub picture, and receive the signal, ch27 China or ch40 CCIR (623.25MHz,

-50dBm) in adjustment mode.

(2) Select item No.12 in service menu by [▲] or [▼] key.

(3-1) When the value of AGC (NO.12 in service menu) is 235 or less than 235.

(3-1-1) Push [►] key of remote control and set AGC value becomes 235 or greater than 235.

(3-1-2) Push the "MUTE" button of remote control, and then AGC adjustment is completed.

(3-2) When the value of AGC (NO.12 in service menu) is 235 or greater than 235.

(3-2-1) Set the value of AGC by [◄] key of remote control to smaller than 235.

(3-2-2) Then push [►] key of remote control and set the AGC value again to greater than and as close as 235.

(3-2-3) Push the "MUTE" button of remote control, and then SUB AGC adjustment is completed.

2. FINAL ASSEMBLY ADJUSTMENT

2.1 CUT OFF ADJUSTMENT

Adjustment Preparation

(1) Pre-set (turn counterclockwise to the end) the screen VR (R, G and B) on FOCUS PACK. Then pre-heat the

set.

(2) Confirm item No. 47、48 and 49 are set to 127 in service menu.

No. V0XX

11 34 235

12 54 234

13 64

14 32

Value of AGC

14

SERVICE ADJUSTMENTS

L

1

Adjustment Procedure

(1) Enter “SERVICE MENU” and select item No.10. Press [►] key to enter CUT OFF adjustment mode.

(2) Turn screen VR (R, G and B) clockwise gradually until each horizontal line (R, G or B) begins to appear.

(3) Press [◄] key to return normal mode.

2.2 RASTER TILT ADJUSTMENT

Adjustment Preparation

(1) Face the set East or West.

(2) Receive the NTSC cross-hatch signal.

(3) Contrast should be set maximum and the other controls should be set center.

(4) The lens focus should be coarsely adjusted.

(5) The electrical focus should be coarsely adjusted.

(6) The digital convergence should not be corrected.

(7) Turn the Main power switch off.

(8) Press and hold the “SERVICE ONLY” switch on CONVERGENCE/FOCUS P.W.B. and switch on the Main

power.

Adjustment Procedure

(1) Apply covers to the R and B lenses or short the TS (2P SUB MINI Connector) on R and B on CPT P.W.B. to

project only green beam.

(2) Turn the G deflection yoke and adjust the Vertical raster inclination. (Fig. 5)

(3) Remove the cover of R or B lens and display blue light and green light together on the screen.

(4) Turn the deflection yoke of R or B and adjust the inclination of R or B light with reference to the green light as

shown on Fig. 6.

(5) After the adjustment, fix the screw of each DY with a torque of 1.18 Nm (12kgfcm).

2.3 DCU PHASE DATA SETTING

Adjustment Preparation

(1) Complete cut off adjustment.

Adjustment Procedure

(1) Receive any PAL signal and Set to 100HZ mode. (RF or VIDEO)

L

2

L

1

, L

2

≦±2mm

R or B

G

L≦±2mm

Vertical center axis of cross-hatch signal

Fig. 5 Raster inclination (G)

Fig. 6 Raster inclination (R or B)

15

SERVICE ADJUSTMENTS

(2) Contrast should be set center and the other controls should be set standard.

(3) Push the “SERVICE ONLY” switch on the CONVERGENCE P.W.B. to set the digital convergence unit to the

adjustment mode.

(4) Phase set

1) Press the [ REVEAL] key on R/C to display the green cross-hatch pattern.

2) Press the [ CHⅠ /Ⅱ ] key to recall the phase DATA on screen.

PAL 100i mode PAL 50p mode NTSC 60p mode

3) If phase data is not same as above, change the DATA by using the following R/C keys.

Press [4] or [6] key to adjust the PH-H

Press [2] or [5] key to adjust the PH-V

Press [◄] or [►] key to adjust the CR-H

Press [▲] or [▼] key to adjust the CR-V

4) Press the [REVEAL] key to exit from phase mode.

5) Press [INDEX] key on R/C twice to write the data into ROM.

6) Push the “SERVICE ONLY” switch on the CONVER P.W.B. twice to exit from adjustment mode of the

digital convergence unit.

(4) Change to PAL50p mode (Set DCU the PAL50p mode) and repeat procedure (2)-(3) for PAL50p mode.

(5) Change to NTSC mode (Set DCU to the NTSC mode) and repeat procedure (2)-(3) for NTSC mode.

2.4 BEAM ALIGNMENT

Preparation for adjustment

(1) Pre-heat 30 minutes or more before the adjustment.

(2) The static convergence data should be cleared.

(3) Raster inclination should be adjusted. Optical focus should be coarsely adjusted.

(4) Contrast should be set MAX and the other control should be set Center.

(5) Receive the NTSC cross-hatch pattern signal or Dot pattern signal.

(6) Discharge static charge from metallic parts on PRT NECK by using Short-clip-JIG.

Adjustment procedure

(1) Green (G) tube alignment: Short-circuit 2P sub-mini connectors on the red ( R ) and blue (B) CPT P.W.B.s and

project the only green beam.

(2) Set the G tube beam alignment magnet to the cancel state as shown on right.

PHASE MODE: 1

PH-H: E7

PH-V: 0C

CR-H: 35

CR-V: 1C

PHASE MODE: 6

PH-H: DD

PH-V: 07

CR-H: 33

CR-

V

: 14

PHASE MODE: 5

PH-H: E7

PH-V: 16

CR-H: 35

CR-

V

: 1C

16

SERVICE ADJUSTMENTS

(3) Turn the static focus VR*

1

for Green fully counterclockwise and check the cross-hatch center position on the

screen.

Note : Halo state

(4) Turn the static focus VR*

1

for Green fully clockwise.

(5) Turn 2 sheets of the alignment magnet in either direction and move the cross-hatch center to the position

where is checked in step (3).

(6) Turn the static focus VR*

1

for Green and check if the picture position moves or not.

(7) Repeat steps (2) to (6) until the picture position does not move during step (6)

(8) In the same manner, adjust the Red ( VR )*

2

and the Blue (VR)*

3

tube alignments.

(9) Fix the beam alignment magnet with white paint after the alignment is completed.

VR*

1

VR*

2

Static Focus VR is on focus pack UFPK

VR*

3

2.5 RASTER POSITION ADJUSTMENT

Preparation for adjustment

(1) Place the set facing east or west.

(2) Receive the NTSC Hitachi circle pattern signal. (Set the NTSC mode)

(3) Contrast control should be set Maximum and the other controls should be set Center.

(4) The raster inclination and beam alignment should be adjusted.

The lens focus and electric focus adjustment should be coarsely adjusted.

(5) The convergence should be uncorrected state.

(6) Turn the Main power SW off.

(7) Press and hold the “SERVICE ONLY” SW. on CONV./FOCUS P.W.B. and switch on the Main power.

(8) Press “SERVICE ONLY” SW again to display the DCU’s cross-hatch pattern.

Adjustment procedure

(1) Turn the centering magnets for R, G and B to get the center point of the cross-hatch position

within specification as shown below.

R B

Geometric center of the screen

G

[Horizontal direction] Unit：mm

R: Ｌ

1

to the left from the geometric center of the screen,L

1

±2mm

B: Ｌ

2

to the right from the geometric center of the screen,L

2

±2mm

G: To geometric center of screen.

4:3 L

1

L

2

43” 20 30

50” 20 30

Ｌ

2

Ｌ

1

17

SERVICE ADJUSTMENTS

[Vertical direction]

Both of the distance between the central horizontal line of R, B and the geometric center of the screen should be

within ±2mm.

(2) After the adjustment is completed, fix the R, G and B centering magnets using white paint.

2.6 SIDE PIN DISTORTION ADJUSTMENT

Adjustment Preparation

(1) VIDEO control should be set to Factory Preset condition.

(2) Place the set facing east.

(3) DCU ROM CHECK should be completed.

Adjustment Procedure

PAL 100i MODE I

2

C No.15

(1) Input any PAL signal.

(2) Press [MENU] key.

(3) Choose FUNCTION and SCAN, and set to 100Hz mode.

(4) Press [MENU] key twice to exit from FUNCTION.

(5) Press and hold the SERVICE ONLY SW. on CONV./FOCUS P.W.B. and press [MUTE] key of Hands

-et. Green DCU cross-hatch are appeared with Conv. Data cleared.

(6) Press the [TV/VIDEO] button on the control panel, then SERVICE MENU appears.

(7) Choose SIDE PIN (EW parabola) item by using Handset up/down cursor key.

(8) Adjust SIDE PIN as following by using Handset left/right cursor key.

(9) Press [MUTE] key of handset to write the adjusted data.

(10) After adjustment, press SERVICE ONLY SW. to exit from SERVICE mode.

PAL 50Hz PROGRESSIVE MODE I

2

C No.19

(1) Input any PAL signal.

(2) Press [MENU] key.

(3) Choose FUNCTION and SCAN, and set to Progressive mode.

(4) Press [MENU] key to exit from FUNCTION.

(5) Adjust the same items as (5)-(10) of setting PAL 100i MODE.

NTSC 60Hz PROGRESSIVE MODE I

2

C No.23

(1) Input any NTSC signal.

(2) Adjust the same items as (5)-(10) of setting PAL 100i MODE.

Edge of vertical DCU cross-hatch line

should be straight condition.

Note: If it’s impossible to adjust the

straight line, set a little pin condition.

18

SERVICE ADJUSTMENTS

2.7 VERTICAL SIZE ADJUSTMENT

Adjustment Preparation

(1) VIDEO control should be set to Factory Preset condition.

(2) DCU ROM CHECK should be completed.

(3) Place the set facing east.

Adjustment Procedure

PAL 100i MODE I

2

C No.13

(1) Input any PAL signal.

(2) Press [MENU] key.

(3) Choose FUNCTION and SCAN, and set to 100Hz mode.

(4) Press [MENU] key to exit from FUNCTION.

(5) Press and hold the SERVICE ONLY SW. on CONV./FOCUS P.W.B. and [MUTE] key of Handset.

Green DCU cross-hatch are appeared with Conv. Data cleared.

(6) Press the input selector, then SERVICE MENU appears.

(7) Choose V.SIZE (amplitude) item by using Handset up/down cursor key.

(8) Adjust V.SIZE (amplitude) as following by using Handset left/right cursor key.

So that the distance between the topmost horizontal line and the bottommost horizontal line of DCU’s

cross-hatch pattern is L.

(9) Press [MUTE] key of handset to write the data.

(10) After adjustment, press SERVICE ONLY SW. for exit from SERVICE mode.

PAL 50Hz PROGRESSIVE MODE I

2

C No.17

(1) Input any PAL signal.

(2) Press [MENU] key.

(3) Choose FUNCTION and SCAN, and set to Progressive mode.

(4) Press [MENU] key to exit from FUNCTION.

(5) Adjust the same items as (5)-(10) of setting PAL 100i MODE.

NTSC 60Hz PROGRESSIVE MODE I

2

C No.21

(1) Input any NTSC signal.

(2) Adjust the same items as (5)-(10) of setting PAL 100i MODE.

Unit: mm Tolerance: ±5mm

L PAL 100i mode PAL 50p mode NTSC 60p mode

43” 525 525 560

50” 610 610 650

L

The distance between the topmost

horizontal line and the bottommost

horizontal line

19

SERVICE ADJUSTMENTS

2.8 HORIZONTAL SIZE ADJUSTMENT

Adjustment Preparation

(1) VIDEO control should be set to Factory Preset condition.

(2) DCU ROM CHECK should be completed.

(3) Place the set facing east.

Adjustment Procedure

PAL 100i MODE I

2

C No.14

(1) Input any PAL signal.

(2) Press [MENU] key.

(3) Choose FUNCTION and SCAN, and set to 100Hz mode.

(4) Press [MENU] key twice to exit from FUNCTION.

(5) Press and hold the SERVICE ONLY SW. on CONV./FOCUS P.W.B. and [MUTE] key of Handset.

Green DCU cross-hatch are appeared with Conv. Data cleared.

(6) Press the input selector, then SERVICE MENU appears.

(7) Choose H.SIZE (EW SIZE) item by using Handset up/down cursor key.

(8) Adjust H.SIZE (EW SIZE) as following by using Handset left/right cursor key.

So that the distance between the left vertical line and the right vertical line of DCU’s cross-hatch

pattern is L.

(9) Press “MUTE” key of handset to write the data.

(10) After adjustment, press SERVICE ONLY SW. for exit from SERVICE mode.

PAL 50Hz PROGRESSIVE MODE I

2

C No. 18

(1) Input any PAL signal.

(2) Press [MENU] key.

(3) Choose FUNCTION and SCAN, and set to Progressive mode.

(4) Press [MENU] key to exit from FUNCTION.

(5) Adjust the same items as (5)-(10) of setting PAL 100i MODE.

NTSC 60Hz PROGRESSIVE MODE I

2

C No.22

(1) Input any NTSC signal.

(2) Adjust the same items as (5)-(10) of setting PAL 100i MODE.

Unit: mm Tolerance: ±5mm

L PAL 100i MODE PAL 50p MODE NTSC 60p MODE

43” 830 830 830

50” 965 965 965

L

The left line

The right line

20

SERVICE ADJUSTMENTS

2.9 TRAPEZOID DISTORTION ADJUSTMENT

Adjustment Preparation

(1) VIDEO control should be set to Factory Preset condition.

(2) HORIZONTAL SIZE adjustment should be completed.

(3) Place the set facing east.

Adjustment Procedure

PAL 100i MODE I

2

C No.16

(1) Input any PAL signal.

(2) Press [MENU] key.

(3) Choose FUNCTION and SCAN, and set to 100i mode.

(4) Press [MENU] key twice to exit from FUNCTION.

(5) Press and hold the SERVICE ONLY SW. on CONV./FOCUS P.W.B. and [MUTE] key of Handset.

Green DCU cross-hatch are appeared with Conv. Data cleared.

(6) Press the input selector, then SERVICE MENU appears.

(7) Choose TRAPEZOID item by using Handset up/down cursor key.

(8) Adjust TRAPEZOID as following by using Handset left/right cursor key.

(9) Press “MUTE” key of handset to write the data.

(10) After adjustment, press SERVICE ONLY SW. for exit from SERVICE mode.

PAL 50Hz PROGRESSIVE MODE I

2

C No.20

(1) Input any PAL signal.

(2) Press [MENU] key.

(3) Choose FUNCTION and SCAN, and set to 50P mode.

(4) Press [MENU] key to exit from FUNCTION.

(5) Adjust the same items as (5)-(10) of setting PAL 100i MODE.

NTSC 60Hz PROGRESSIVE MODE I

2

C No.24

(1) Input any NTSC signal.

(2) Adjust the same items as (5)-(10) of setting PAL 100i MODE.

Vertical Screen frame line & edge

of vertical DCU cross-hatch line

should be parallel condition.

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