Toshiba 26hf85 User manual

SERVICE MANUAL

COLOR TELEVISION

DOCUMENT CREATED IN JAPAN, March, 2005

26HF85

(MFR’S VERSION A)

FILE NO. 050-200509

SERVICING NOTICES ON CHECKING

6. AVOID AN X-RAY1. KEEP THE NOTICES

As for the places which need special attentions,

they are indicated with the labels or seals on the

cabinet, chassis and parts. Make sure to keep the

indications and notices in the operation manual.

3. USE THE DESIGNATED PARTS

5. TAKE CARE TO DEAL WITH THE

CATHODE-RAY TUBE

Safety is secured against an X-ray by consider-

ing about the cathode-ray tube and the high

voltage peripheral circuit, etc.

Therefore, when repairing the high voltage pe-

ripheral circuit, use the designated parts and

make sure not modify the circuit.

Repairing except indicates causes rising of high

voltage, and it emits an X-ray from the cathode-

ray tube.

Please include the following informations when you order parts. (Particularly the VERSION LETTER.)

1. MODEL NUMBER and VERSION LETTER

The MODEL NUMBER can be found on the back of each product and the VERSION LETTER can be

found at the end of the SERIAL NUMBER.

2. PART NO. and DESCRIPTION

You can find it in your SERVICE MANUAL.

HOW TO ORDER PARTS

When you exchange IC and Transistor with a heat sink, apply silicon grease on the contact section of

the heat sink. Befor applying new silicon grease, remove all the old silicon grease. (Old grease may

cause damages to the IC and Transistor.)

IMPORTANT

2. AVOID AN ELECTRIC SHOCK

There is a high voltage part inside. Avoid an

electric shock while the electric current is

flowing.

The parts in this equipment have the specific

characters of incombustibility and withstand

voltage for safety. Therefore, the part which is

replaced should be used the part which has

the same character.

Especially as to the important parts for safety

which is indicated in the circuit diagram or the

table of parts as a mark, the designated

parts must be used.

4. PUT PARTS AND WIRES IN THE

ORIGINAL POSITION AFTER

ASSEMBLING OR WIRING

There are parts which use the insulation

material such as a tube or tape for safety, or

which are assembled in the condition that

these do not contact with the printed board.

The inside wiring is designed not to get closer

to the pyrogenic parts and high voltage parts.

Therefore, put these parts in the original

positions.

In the condition that an explosion-proof cathode-

ray tube is set in this equipment, safety is

secured against implosion. However, when

removing it or serving from backward, it is

dangerous to give a shock. Take enough care to

deal with it.

PERFORM A SAFETY CHECK AFTER

SERVICING

Confirm that the screws, parts and wiring which

were removed in order to service are put in the

original positions, or whether there are the

portions which are deteriorated around the

serviced places serviced or not. Check the

insulation between the antenna terminal or

external metal and the AC cord plug blades.

And be sure the safety of that.

(INSULATION CHECK PROCEDURE)

Unplug the plug from the AC outlet.

Remove the antenna terminal on TV and turn

on the TV.

Insulation resistance between the cord plug

terminals and the eternal exposure metal

[Note 2] should be more than 1M ohm by

using the 500V insulation resistance meter

[Note 1].

If the insulation resistance is less than 1M

ohm, the inspection repair should be

required.

[Note 1]

If you have not the 500V insulation

resistance meter, use a Tester.

[Note 2]

External exposure metal: Antenna terminal

Headphone jack

A1-1

Licensed by BBE Sound, Inc. under USP5510752 and 5736897.

BBE and BBE symbol are registered trademarks of BBE

Sound, Inc.

PCBs (manufactured) using lead free solder will have a PbF printing on the PCB.

(Please refer to figures.)

Caution:

Pb free solder has a higher melting point than standard solder;

Typically the melting point is 50°F~70°F(30°C~40°C) higher.

Please use a soldering iron with temperature control and adjust it to 650°F ±20°F (350°C ±10°C).

In case of using high temperature soldering iron, please be carefull not to heat too long.

Pb free solder will tend to splash when heated too high (about 1100°F/ 600°C).

All products with the printed circuit board with PbF printing must be serviced with lead free solder.

When soldering or unsoldering, completely remove all of the solder from the pins or solder area,

and be sure to heat the soldering points with the lead free solder until it melts sufficiently.

Distinction of PbF PCB:

Recommendations

Recommended lead free solder composition is Sn-3.0Ag-0.5Cu.

ABOUT LEAD FREE SOLDER (PbF)

•

A1-2

TABLE OF CONTENTS

SERVICING NOTICES ON CHECKING.....................................................................................

HOW TO ORDER PARTS ..........................................................................................................

IMPORTANT ...............................................................................................................................

ABOUT LEAD FREE SOLDER (PbF)........................................................................................

TABLE OF CONTENTS..............................................................................................................

GENERAL SPECIFICATIONS ...................................................................................................

DISASSEMBLY INSTRUCTIONS

1. REMOVAL OF ANODE CAP ...............................................................................................

2. REMOVAL AND INSTALLATION OF FLAT PACKAGE IC ................................................

SERVICE MODE LIST ................................................................................................................

CONFIRMATION OF HOURS USED .........................................................................................

WHEN REPLACING EEPROM (MEMORY) IC ..........................................................................

ELECTRICAL ADJUSTMENTS..................................................................................................

BLOCK DIAGRAMS

TV.............................................................................................................................................

SOUND AMP/FRONT JACK ...................................................................................................

MICON1/STEREO ...................................................................................................................

AV/SYNC COUNT/CONNECTOR...........................................................................................

INTERFACE.............................................................................................................................

MICON2 ...................................................................................................................................

SCALER ..................................................................................................................................

PRINTED CIRCUIT BOARDS

MAIN/FRONT JACK ................................................................................................................

AV ............................................................................................................................................

HD-MI.......................................................................................................................................

CRT/VM COIL/SCALER ..........................................................................................................

SCHEMATIC DIAGRAMS

CHROMA/PROGRESSIVE/PIN ..............................................................................................

DEFLECTION ..........................................................................................................................

TV POWER..............................................................................................................................

OPERATION............................................................................................................................

SOUND AMP/FRONT AV........................................................................................................

MICON1 ...................................................................................................................................

STEREO ..................................................................................................................................

TUNER/AV...............................................................................................................................

REGURATOR ..........................................................................................................................

SYNC COUNT/CONECTOR ...................................................................................................

CRT/SVM.................................................................................................................................

INTERFACE.............................................................................................................................

MICON2 ...................................................................................................................................

ANALOG/DIGITAL CONVERTER...........................................................................................

SCALER...................................................................................................................................

DIGITAL COMB .......................................................................................................................

SDRAM ....................................................................................................................................

IN/OUT/REGULATOR .............................................................................................................

WAVEFORMS .............................................................................................................................

MECHANICAL EXPLODED VIEWS...........................................................................................

MECHANICAL REPLACEMENT PARTS LIST .........................................................................

ELECTRICAL REPLACEMENT PARTS LIST...........................................................................

A1-1

A1-2

A2-1

A3-1~A3-5

B1-1

B2-1, B2-2

C-1

C-2, C-3

D-1~D-6

E-1, E-2

E-3, E-4

E-5, E-6

E-7, E-8

E-9, E-10

E-11, E-12

E-13, E-14

F-1~F-4

F-5, F-6

F-7, F-8

F-9, F-10

G-1, G-2

G-3, G-4

G-5, G-6

G-7, G-8

G-9, G-10

G-11, G-12

G-13, G-14

G-15, G-16

G-17, G-18

G-19, G-20

G-21, G-22

G-23, G-24

G-25, G-26

G-27, G-28

G-29, G-30

G-31, G-32

G-33, G-34

G-35, G-36

H-1~H-4

I-1~I-3

J1-1

J2-1~J2-8

A2-1

GENERAL SPECIFICATIONS

TV CRT CRT Size / Visual Size 26 inch / 656.7mmV

System CRT Type Flat (16:9)

Magnetic Field BV/BH +0.45G/0.18G

Color System NTSC

Display Capability 1080i/540p

Speaker 2 Speaker

Position Front Bottom

Size 1.8 x 3.9 Inch

Impedance 8 ohm

Sound Output MAX 5.0W+5.0W

10%(Typical) -W

NTSC3.58+4.43 /PAL60Hz No

G-2 Tuning Broadcasting System US System M

System Tuner and System 1Tuner

Receive CH Destination USA(W/ CABLE)

2 - 69, 4A, A-5 - A-1,

CH Coverage A - I, J - W, W+1 - W+84

Intermediate Picture(FP) 45.75MHz

Frequency Sound(FS) 41.25MHz

FP-FS 4.50MHz

Preset CH No

Stereo/Dual TV Sound Yes

Tuner Sound Muting Yes

G-3 Power Power Source AC 120V AC 60Hz

Power Consumption at AC 175 W at AC 120 V 60 Hz

Stand by (at AC) 1 W at AC 120 V 60 Hz

Per Year -- kWh/Year

Protector Power Fuse Yes

Safety Circuit Yes

IC Protector(Micro Fuse) Yes

G-4 Regulation Safety UL

Radiation FCC

X-Radiation DHHS

G-5 Temperature Operation +5oC ~ +40oC

Storage -20oC ~ +60oC

G-6 Operating Humidity Less than 80% RH

A3-1

GENERAL SPECIFICATIONS

G-7 On Screen Menu Yes

Display Menu Type Icon

Picture Yes

Mode(Picture preference) Yes

Brightness Yes

Contrast Yes

Color Yes

Tint Yes

Sharpness Yes

Color Temperature Yes

Display Format Yes

Cable Clear Yes

SVM Yes

Reset Yes

Audio Yes

MTS Yes

Bass Yes

Treble Yes

Balance Yes

Stable Sound Yes

Speakers On/Off Yes

Dolby Virtual No

WOW SRS 3D No

WOW Focus No

WOW Tru Bass No

BBE Yes

HDMI1 Yes

HDMI2 No

Reset Yes

Setup Yes

Language Yes

Clock Set Yes

TV/CABLE Yes

CH Program Yes

Add/ Erase Yes

Closed Caption Yes

Picture Size Yes

Picture Scroll Yes

Cinema Mode Yes

Aspect Yes

Image Tilt Yes

Option Yes

On/Off Timer Yes

Favorite CH Yes

CH Label Yes

VIDEO Label Yes

Locks Yes

V-Chip Yes

Lock Yes

New Password Yes

Front Panel Lock Yes

Control Level Yes

Volume Yes

Contrast Yes

Brightness Yes

Color Yes

Tint Yes

Sharpness Yes

Bass Yes

Treble Yes

Balance Yes

Image Tilt Yes

Picture Scroll Yes

Stereo, SAP, Mono Yes

Video Yes

Color Stream(Component) Yes

HDMI Yes

Channel(TV/Cable) Yes

CH Label Yes

Video Label Yes

Clock Yes

Game Timer Yes

Front Panel Lock Yes

On Timer/Off Timer Yes

Sleep Timer Yes

Reset Yes

Sound Mute Yes

V-chip Rating Yes

NOT AVAILABLE Yes

Picture Size Yes

A3-2

GENERAL SPECIFICATIONS

G-8 OSD Language English French Spanish

G-9 Clock and Sleep Timer Max Time 120 Min

Timer Step 10 Min

On/Off Timer Program Yes

Wake Up Timer No

Timer Back-up (at Power Off Mode) more than -- Min Sec

G-10 Remote Unit RC-KK

Control Glow in Dark Remocon Yes

Back Light Remocon No

Remocon Format Toshiba

Format Toshiba

Custom Code TV:40-BFh

Power Source Voltage(D.C) 3V

UM size x pcs UM-4 x 2 pcs

Total Keys 44 Keys

Keys Power Yes

1 Yes

2 Yes

3 Yes

4 Yes

5 Yes

6 Yes

7 Yes

8 Yes

9 Yes

0 Yes

100 /+10 Yes

CH Up Yes

CH Down Yes

Volume Up Yes

Volume Down Yes

TV/Video(Input Select) Yes

ENT,CH RTN(Quick View) Yes

Menu > / FAV Up Yes

Menu < / FAV Down Yes

Menu Up Yes

Menu Down Yes

Mute Yes

PIC SIZE (16:9) Yes

Sleep Yes

Exit Yes

Light No

Multi Brand Keys TV Yes

CBL/SAT Yes

VCR Yes

DVD Yes

(DVD Keys) Enter Yes

DVD Clear Yes

Top MENU Yes

(TV / DVD Keys) RECALL(Call) / (Display) Yes

Menu/Enter / DVD MENU Yes

(DVD / VCR Keys) Pause/Still Yes

FF Yes

Rew Yes

Play Yes

Stop Yes

<</Skip / Search Forward Yes

>>/Skip / Search Forward Yes

(VCR Keys) Rec Yes

TV/VCR Yes

A3-3

GENERAL SPECIFICATIONS

G-11 Features Auto Shut Off Yes

CABLE Yes

Power On Memory Yes

Memory(Last CH) Yes

Memory(Last Volume) Yes

V-Chip Yes

Type USA, ORION Type

SRS WOW(SRS 3D/Focus/Tru Bass) No

Virtual Dolby No

BBE Yes(Digital)

Timer(On Timer /Off Timer/Sleep Timer) Yes

Aspect Yes

Cinema Mode Yes

Image Tilt Yes

Direct Input Selection Yes

Auto Search No

CH Lock Yes

CH Program Yes

CH Label Yes

SAP Yes

Just Clock Function No

VIDEO Label Yes

SVM Circuit Yes

Comb Filter Yes

3 -D

Super Wide Band AMP No

Cable Clear Yes

Hotel Lock No

Closed Caption Yes

Stable Sound Yes

FBT Leak Test Protect Yes

Video Lock Yes

Game Timer(Max Time:120Min) Yes

Energy Star Yes

Favorite CH Yes

Variable Audio Out Yes

Picture Size Yes

Color Temperature Control Yes

Mode(Picture Preference) Yes

Front Panel Lock Yes

Available Scan Rates (Component/HDMI) 480i/480p/720p/1080i

Menu=Volume Up+Volume Down Yes

Auto Setup(Language/CH Program) Yes

G-12 Accessories Owner's Manual Language English / Spanish

W/ Warranty Yes

Remote Control Unit Yes

Rod Antenna No

Poles

Terminal

Loop Antenna No

Terminal -

U/V Mixer No

DC Car Cord (Center+) No

Guarantee Card No

Warning Sheet No

Circuit Diagram No

Antenna Change Plug No

Service Station List No

Important Safety Instruction No

Dew/AHC Caution Sheet No

AC Plug Adapter No

Quick Set-up Sheet No

Battery Yes

UM size x pcs UM-4 x 2

OEM Brand No

AC Cord No

AV Cord (2Pin-1Pin) No

Registration Card (NDL Card) Yes

PTB Sheet No

ESP Card No

300 ohm to 75 ohm Antenna Adapter No

Information Sheet(for HDMI) No

A3-4

GENERAL SPECIFICATIONS

G-13 Interface Switch Front Power Yes

Channel Up/Menu Up Yes

Channel Down/Menu Down Yes

Volume Up/Menu > Yes

Volume Down/Menu < Yes

Indicator Power Yes(RED)

Stand-by No

On Timer No

Terminals Front Video Input = VIDEO3 RCA

Audio Input = VIDEO3 RCA x 2

S Input = VIDEO3 Yes

Other Terminal No

Rear Video Input(Rear1) = VIDEO1 RCA

Video Input(Rear2) = VIDEO2 RCA

S Input = VIDEO1 Yes

S Input = VIDEO2 Yes

Audio Input(Rear1) = VIDEO1 RCA x 2

Audio Input(Rear2) = VIDEO2 RCA x 2

Video Output RCA

Audio Output RCA x 2 (Variable)

Component Input1(w/ Analog Audio L/R) RCA x 5

Component Input2(w/ Analog Audio L/R) RCA x 5

HDMI Input1(w/ Analog Audio L/R) HDMI x 1(RCA x 2)

HDMI Input2(w/ Analog Audio L/R) No

Diversity No

Ext Speaker No

VHF/UHF Antenna Input F Type

AC Outlet No

G-14 Set Size Approx. W x D x H (mm) 700 x 502 x 495.5

G-15 Weight Net (Approx.) 36.0 kg

(

79.4 lbs

)

Gross (Approx.) 41.5kg

(

91.5lbs

)

G-16 Carton Master Carton No

Content ---- Sets

Material -- /--

Dimensions W x D x H(mm) -- x -- x --

Description of Origin No

Gift Box Material Double/Brown

Dimensions W x D x H(mm) 840 x 620 x 627

Description of Origin Yes

Drop Test Natural Dropping At 1 Corner / 2 Edges / 4

Surfaces

Height (cm) 60 (ORION SPEC:31)

Container Stuffing 156 Sets/40' container

G-17 Cabinet Material Cabinet Cabinet Front PS 94V0 DECABROM

Cabinet Rear PS 94V0 NON-DECABROM

PCB Non-Halogen Demand No

Eyelet Demand Yes

G-18 Environment Pb-free Soldering Yes

Parts Specifica

Yes

A3-5

B1-1

1. REMOVAL OF ANODE CAP

Read the following NOTED items before starting work.

After turning the power off there might still be a potential

voltage that is very dangerous. When removing the

Anode Cap, make sure to discharge the Anode Cap's

potential voltage.

Do not use pliers to loosen or tighten the Anode Cap

terminal, this may cause the spring to be damaged.

REMOVAL

1. Follow the steps as follows to discharge the Anode Cap.

(Refer to Fig. 1-1.)

Connect one end of an Alligator Clip to the metal part of a

flat-blade screwdriver and the other end to ground.

While holding the plastic part of the insulated Screwdriver,

touch the support of the Anode with the tip of the

Screwdriver.

A cracking noise will be heard as the voltage is discharged.

Flip up the sides of the Rubber Cap in the direction of the

arrow and remove one side of the support.

(Refer to Fig. 1-2.)

DISASSEMBLY INSTRUCTIONS

GND on the CRT

Screwdriver

Alligator Clip

Support CRT

GND on the CRT

Rubber Cap

CRT Support

Fig. 1-1

Fig. 1-2

3. After one side is removed, pull in the opposite direction to

remove the other.

NOTE

Take care not to damage the Rubber Cap.

INSTALLATION

1. Clean the spot where the cap was located with a small

amount of alcohol. (Refer to Fig. 1-3.)

Location of Anode Cap

Fig. 1-3

NOTE

Confirm that there is no dirt, dust, etc. at the spot where

the cap was located.

Arrange the wire of the Anode Cap and make sure the

wire is not twisted.

Turn over the Rubber Cap. (Refer to Fig. 1-4.)

Fig. 1-4

4. Insert one end of the Anode Support into the anode button,

then the other as shown in Fig. 1-5.

6. Confirm that the Support is securely connected.

Put on the Rubber Cap without moving any parts.

CRT Support Fig. 1-5

B2-1

Masking Tape

(Cotton Tape)

DISASSEMBLY INSTRUCTIONS

REMOVAL

Put Masking Tape (cotton tape) around the Flat Package

IC to protect other parts from any damage.

(Refer to Fig. 2-1.)

Fig. 2-1

NOTE

REMOVAL AND INSTALLATION OF

FLAT PACKAGE IC

Some ICs on the PCB are affixed with glue, so be

careful not to break or damage the foil of each IC leads

or solder lands under the IC when removing it.

NOTE

Masking is carried out on all the parts located within 10

mm distance from IC leads.

Blower type IC

desoldering machine

Heat the IC leads using a blower type IC desoldering

machine. (Refer to Fig. 2-2.)

Fig. 2-2

NOTE

Do not rotate or move the IC back and forth , until IC

can move back and forth easily after desoldering the

leads completely.

When IC starts moving back and forth easily after

desoldering completely, pickup the corner of the IC using a

tweezers and remove the IC by moving with the IC

desoldering machine. (Refer to Fig. 2-3.)

Blower type IC

desoldering

machine

IC Fig. 2-3

Tweezers

Peel off the Masking Tape.4.

Absorb the solder left on the pattern using the Braided

Shield Wire. (Refer to Fig. 2-4.)

NOTE

Do not move the Braided Shield Wire in the vertical

direction towards the IC pattern.

Braided Shield Wire

Soldering Iron

Fig. 2-4

IC pattern

B2-2

DISASSEMBLY INSTRUCTIONS

Supply soldering

from upper position

to lower position

Supply the solder from the upper position of IC leads

sliding to the lower position of the IC leads.

(Refer to Fig. 2-6.)

Fig. 2-6

Soldering IronSolder

Absorb the solder left on the lead using the Braided Shield

Wire. (Refer to Fig. 2-7.)

Fig. 2-7

Soldering Iron

Braided Shield Wire

NOTE

Do not absorb the solder to excess.

When bridge-soldering between terminals and/or the

soldering amount are not enough, resolder using a Thin-tip

Soldering Iron. (Refer to Fig. 2-8.)

Fig. 2-8

Thin-tip Soldering Iron

NOTE

When the IC leads are bent during soldering and/or

repairing, do not repair the bending of leads. If the

bending of leads are repaired, the pattern may be

damaged. So, always be sure to replace the IC in this

case.

Finally, confirm the soldering status on four sides of the IC

using a magnifying glass.

Confirm that no abnormality is found on the soldering

position and installation position of the parts around the IC.

If some abnormality is found, correct by resoldering.

Solder temporarily

Soldering Iron

INSTALLATION

Take care of the polarity of new IC and then install the new

IC fitting on the printed circuit pattern. Then solder each

lead on the diagonal positions of IC temporarily.

(Refer to Fig. 2-5.)

Fig. 2-5

Solder temporarily

C-1

SERVICE MODE LIST

This unit provided with the following SERVICE MODES so you can repair, examine and adjust easily.

To enter to the Service Mode, press both set key and remote control key for more than 2 seconds.

Set Key Remocon Key Operations

VOL. (-) MIN 0Releasing of V-CHIP PASSWORD.

VOL. (-) MIN 1

Initialization of factory data.

NOTE: Do not use this for the normal servicing.

If you set a factory initialization, the memories are reset such as the channel setting,

and the POWER ON total hours.

VOL. (-) MIN 6

POWER ON total hours is displayed on the screen.

Refer to the "CONFIRMATION OF HOURS USED".

Can be checked of the INITIAL DATA of MEMORY IC.

Refer to the "WHEN REPLACING EEPROM (MEMORY) IC".

VOL. (-) MIN Display of the Adjustment MENU on the screen.

Refer to the "ELECTRICAL ADJUSTMENT" (On-Screen Display Adjustment).

CONFIRMATION OF HOURS USED

POWER ON total hours can be checked on the screen. Total hours are displayed in 16 system of notation.

NOTE: If you set a factory initialization, the total hours is reset to "0".

Set the VOLUME to minimum.

Press both VOL. DOWN button on the set and Channel

button (6) on the remote control for more than 2 seconds.

After the confirmation of using hours, turn off the power.

ADDRESS DATA

INIT 000 DF

CRT ON 0010

OEC7118A_32

FIG. 1

Initial setting content of MEMORY IC.

POWER ON total hours.

= (16 x 16 x 16 x thousands digit value)

+ (16 x 16 x hundreds digit value)

+ (16 x tens digit value)

+ (ones digit value)

MICON Version

C-2

WHEN REPLACING EEPROM (MEMORY) IC

If a service repair is undertaken where it has been required to change the MEMORY IC, the following steps should be taken to

ensure correct data settings while making reference to TABLE 1.

ADDRESS DATA

INIT 000 DF

CRT ON 0010

OEC7118A_32

FIG. 1

FF A2 05 C1 E6 1C 87 98 42 E4

+0 +1 +2 +3 +4 +5 +6 +7 +8 +9 +A +B +C +D +E +FINI

01 1F 24 40 45 5D 62 45 4A

88 00 00 00 00 00 00 00 00 1A

77 05 07 22 10 07 00 22 74 81

8F 40 00 27 0A 0A 00 13 40

B3 03 0D 36 03 0500

10 05 67 0F 15 0A AA 64

20 00 5A 98 33 04 76

30 01 07 06 40 40 40

40 C0 00 51 70 72 99 59

68 59 00 73 14 1F 2D 24 16

08 D6 D9 DB 15 00 00 26 06 07

50 99 00 00 00 00 00 FE

60 09 00 C9 C8 E8 BC

40 00 21 66 77 00 00 00 0F

FF C0 52 50 8B 00 06 06 22 00

11 F0 00 07 00 00 00 B6 01 48

33 39 3C 3F 42 45 48 4B 4E

70 0F 1D 6D FF FF FA FA

80 96 8B 6C 90 22 00

90 33 23 27 2A 2D 30

A0 36 51 53 55 57 58 59

5A 5C 5D 5E 5F 61 63 65 67

B0 5B 69 6A 6B 6C 6D 6E

6F 71 71 72 72 73 73 74 74

76 76 77 77 77 77 78 78 78 78

15 18 11 14 E0 E6 F5 2B 38 FF

54 --- --- --- --- --- --- --- ---

C0 70 75 75 75 75 76 76

D0 79 42 00 00 00 0B

E0 17 31 36 40 00 3F

F0 --- --- --- --- --- --- ---

DC 21 66 66 0C 71 69 33 00

69 33 00 44 00 77 5E 99 59 03

100 F1 0E 38 22 66 DA 71

110 82 88 88 00 82 01

00 82 03 82 0F 85 00 82 8D

00 82 00 82 0D 00 05 11 00 11

00 73 00 00 00 25 1E F4 05 16

120 03 83 00 82 D0 01 82

130 00 11 1A 00 1C 00

140 A4 03 03 00 7F 7F

Table 1

00 7E 0E 0A 00 00 00 00 84150 7E 00 00 00 00 00 83

00 00 00 00 20 0F FF F3 EC

160 00 FF FF FF FF FF FF

FF FB 00 10 01 FB 00 20 01

2A 01 FB 00 10 01 FB 00 05 01

42 01 FB 00 27 01 FB 00 05 01

170 FF FB 00 4D 01 FB 00

180 FB 00 19 01 FB 00

190 77 77 77 --- --- ---

C-3

10.

11.

The unit will now have the correct DATA for the new MEMORY IC.

Enter DATA SET mode by setting VOLUME to minimum.

Press both VOL. DOWN button on the set and Channel button (6) on the remote control for more than 2 seconds.

ADDRESS and DATA should appear as FIG 1.

ADDRESS is now selected and should "blink". Using the UP/DOWN button on the remote, step through the ADDRESS until

required ADDRESS to be changed is reached.

Press RIGHT/LEFT button to select DATA. When DATA is selected, it will "blink".

Again, step through the DATA using UP/DOWN button until required DATA value has been selected.

Pressing RIGHT/LEFT button will take you back to ADDRESS for further selection if necessary.

Repeat steps 3 to 6 until all data has been checked.

When satisfied correct DATA has been entered, turn POWER off (return to STANDBY MODE) to finish DATA input.

After the data input, set to the initializing of shipping.

Turn POWER on.

Press both VOL. DOWN button on the set and Channel button (1) on the remote control for more than 2 seconds.

After the finishing of the initializing of shipping, the unit will turn off automatically.

WHEN REPLACING EEPROM (MEMORY) IC

ELECTRICAL ADJUSTMENTS

D-1

1. ADJUSTMENT PROCEDURE

Read and perform these adjustments when repairing the

circuits or replacing electrical parts or PCB assemblies.

CAUTION

•

Use an isolation transformer when performing any service

on this chassis.

Before removing the anode cap, discharge electricity

because it contains high voltage.

When removing a PCB or related component, after

unfastening or changing a wire, be sure to put the wire

back in its original position.

When you exchange IC and Transistor with a heat sink,

apply silicon grease on the contact section of the heat

sink. Before applying new silicon grease, remove all the

old silicon grease. (Old grease may cause damages to the

IC and Transistor.) 2. BASIC ADJUSTMENTS

Prepare the following measurement tools for electrical

adjustments.

1. Oscilloscope

2. Digital Voltmeter

3. Multi-sound Generator

4. Pattern Generator

On-Screen Display Adjustment

1. In the condition of NO indication on the screen.

Press the VOL. DOWN button on the set and the Channel

button (9) on the remote control for more than 2 seconds to

appear the adjustment mode on the screen as shown in

Fig. 1-1.

Fig. 1-1

Use the Channel UP/DOWN button or Channel button

(0-9) on the remote control to select the options shown

in Fig. 1-2.

Press the MENU button on the remote control to end the

adjustments.

To display the adjustment screen for AV, CS and HD-

MI mode, press the TV/VIDEO button on the remote

control to set to the AV, CS and HD-MI mode. Press

the VOL.DOWN button on the set and the channel (9)

on the remote control for more than 2 seconds.

00 OSD H

2-2: WHITE BALANCE

NOTE: Adjust after performing CUT OFF adjustment.

Place the set in Aging Test for more than 10 minutes.

Receive the gray scale pattern from the Pattern Generator.

Using the remote control, set the brightness and contrast

to normal position.

Activate the adjustment mode display of Fig. 1-1 and

press the channel button (24) on the remote control to

select “R.BIAS”.

Press the CH. UP/DOWN button on the remote control to

select the “R.BIAS”, “G.BIAS”, “B.BIAS”, “R/G.DRV”, “B/

R.DRV”, “R.BIAS(C)”, “G.BIAS(C)”, “B.BIAS(C)”, “R/

G.DRV(C)”, “B/R.DRV(C)”, “R.BIAS(W)”, “G.BIAS(W)”,

“B.BIAS(W)”, “R/G.DRV(W)” or “B/R.DRV(W)”.

Adjust the VOL. UP/DOWN button on the remote control

to whiten the R.BIAS(C), G.BIAS(C), B.BIAS(C), R/

G.DRV(C), B/R.DRV(C), R.BIAS(W), G.BIAS(W),

B.BIAS(W), R/G.DRV(W) and B/R.DRV(W)”at each step

tone sections equally.

Perform the above adjustments 5 and 6 until the white

color is achieved.

2-1: CUT OFF

Place the set in Aging Test for more than 15 minutes.

Place the set in AV MODE without signal.

Using the remote control, set the brightness and contrast

to normal position.

Activate the adjustment mode display of Fig. 1-1 and

press the channel button (01) on the remote control to

select "CUT OFF".

Adjust the Screen Volume until a dim raster is obtained.

Fig. 1-2

FUNCTION

OSD H

CUT OFF

H.POSI

V.POSI

H. SIZE

V. SIZE

V. LIN

V-EHT

H-EHT

V-BLK P

V-BLK S

V.CENT

V.LIMIT

V.CORR

V.S.CORR

EW PARA

TRAPEZIUM

COR.TOP

COR.BTM

S.CORR

NO.

FUNCTION

CORNER

C.PARA

C.SAW

V.SYMM

R.BIAS

G.BIAS

B.BIAS

R/G.DRV

B/R.DRV

R.BIAS(C)

G.BIAS(C)

B.BIAS(C)

R/G.DRV(C)

B/R.DRV(C)

R.BIAS(W)

G.BIAS(W)

B.BIAS(W)

R/G.DRV(W)

B/R.DRV(W)

R-Y GAIN

NO.

FUNCTION

R-Y PHASE

G-Y GAIN

G-Y PHASE

BRI.CENT

BRI.MAX

BRI.MIN

CONT.CENT

CONT.MAX

CONT.MIN

COL.CENT

COL.MAX

COL.MIN

SUB CONT

TINT

SHARP.CENT

SHARP.MAX

SHARP.MIN

TILT.CENT

TEST STEREO

TEST AUDIO

THEATER WIDEA I

ELECTRICAL ADJUSTMENTS

D-2

2-6: VERTICAL CENT/ VERTICAL SIZE

10.

11.

Receive the monoscope pattern.

Press the MENU button. And, then press the LEFT/

RIGHT button on the remote control until the PICTURE

menu appears.

Press the LEFT/RIGHT button on the remote control to

highlight DISPLAY FORMAT.

Press the LEFT/RIGHT button on the remote control to

select 1080i.

Set the screen mode to FULL.

Using the remote control, set the brightness and contrast

to normal position.

Activate the adjustment mode display of Fig. 1-1 and

press the channel button (11) on the remote control to

select “V. CENT”.

Press the VOL. UP/DOWN button on the remote control

until the horizontal line becomes fit to the notch of the

shadow mask.

Receive the monoscope pattern.

Activate the adjustment mode display of Fig. 1-1 and

press the channel button (05) on the remote control to

select “V. SIZE”.

Press the VOL. UP/DOWN button on the remote control

until the SHIFT quantity of the OVER SCAN on upside and

downside becomes 8%.

2-4: OSD HORIZONTAL

Receive the monoscope pattern from the Pattern

Generator.

Using the remote control, set the brightness and

contrast to normal position.

Activate the adjustment mode display of Fig. 1-1 and

press the channel button (00) on the remote control to

select "OSD H".

Press the LEFT/RIGHT button on the remote control

until the difference of A and B becomes minimum.

(Refer to Fig. 2-1)

2-5: HORIZONTAL POSITION/ HORIZONTAL SIZE

10.

Receive the monoscope pattern.

Press the MENU button. And, then press the LEFT/

RIGHT button on the remote control until the PICTURE

menu appears.

Press the LEFT/RIGHT button on the remote control to

highlight DISPLAY FORMAT.

Press the LEFT/RIGHT button on the remote control to

select 1080i.

Set the screen mode to FULL.

Activate the adjustment mode display of Fig. 1-1 and

press the channel button (02) on the remote control to

select "H.POSI".

Press the VOL. UP/DOWN button on the remote

control until the SHIFT quantity of the OVER SCAN on

right and left becomes becomes minimum.

Receive the monoscope pattern.

Activate the adjustment mode display of Fig. 1-1 and

press the channel button (04) on the remote control to

select “H. SIZE”.

Press the VOL. UP/DOWN button on the remote control

until the SHIFT quantity of the OVER SCAN on right and

left becomes 7.5%.

2-7: VERTICAL LINEARITY

NOTE: Adjust after performing adjustments in section 2-6.

After the adjustment of Vertical Linearity, reconfirm

the Vertical Position and Vertical Size adjustments.

Receive the monoscope pattern.

Press the MENU button. And, then press the LEFT/

RIGHT button on the remote control until the PICTURE

menu appears.

Press the LEFT/RIGHT button on the remote control to

highlight DISPLAY FORMAT.

Press the LEFT/RIGHT button on the remote control to

select 1080i.

Set the screen mode to FULL.

Using the remote control, set the brightness and contrast

to normal position.

Activate the adjustment mode display of Fig. 1-1 and

press the channel button (06) on the remote control to

select “V. LIN”.

Press the VOL. UP/DOWN button on the remote control

until the SHIFT quantity of the OVER SCAN on upside and

downside becomes 8%.

Fig. 2-1

00 OSD H

THEATER WIDEA I

2-3: FOCUS

Receive the monoscope pattern.

Turn the Focus Volume fully counterclockwise once.

Adjust the Focus Volume until picture is distinct.

ELECTRICAL ADJUSTMENTS

D-3

2-9: SUB CONTRAST

10.

11.

12.

Set the screen mode to FULL.

Activate the adjustment mode display of Fig. 1-1 and

press the channel button (52) on the remote control to

select "SUB CONT".

Check if the step No. SUB CONT is "14".

Receive a broadcast and check if the picture is normal.

Press the TV/VIDEO button on the remote control to set to

the AV mode. Then perform the above adjustments 2~4.

Receive a broadcast and check if the picture is normal.

Press the TV/VIDEO button on the remote control to set to

the CS mode.Then perform the above adjustments 2~4.

Receive a broadcast and check if the picture is normal.

Press the TV/VIDEO button on the remote control to set to

the HD-MI mode.

Activate the adjustment mode display of Fig. 1-1 and

press the channel button (52) on the remote control to

select "SUB CONT".

Check if the step No. SUB CONT is "16".

Receive a broadcast and check if the picture is normal.

2-8: BRIGHT CENT

10.

11.

Receive the monoscope pattern. (RF Input)

Set the screen mode to FULL.

Using the remote control, set the brightness and contrast

to normal position.

Activate the adjustment mode display of Fig. 1-1 and

press the channel button (43) on the remote control to

select "BRI CENT".

Press the VOL. UP/DOWN button on the remote control

until the white 2.7% is starting to be visible

Receive the monoscope pattern. (Audio Video Input)

Press the TV/VIDEO button on the remote control to set

to the AV mode. Then perform the above adjustments

2~5.

Receive the monoscope pattern.

Press the TV/VIDEO button on the remote control to set

to the CS mode.Then perform the above adjustments

2~5.

Receive the monoscope pattern.

Press the TV/VIDEO button on the remote control to set

to the HD-MI mode.Then perform the above adjustments

2~5.

Receive the crosshatch signal from the Pattern Generator.

Set the screen mode to FULL.

Using the remote control, set the brightness and contrast

to normal position.

Activate the adjustment mode display of Fig. 1-1 and

press the channel button (15) on the remote control to

select “E W PARA”.

Press the VOL. UP/DOWN button on the remote control

until the both ends vertical lines become straight.

Set the screen mode to 4:3.

Press the VOL. UP/DOWN button on the remote control

until the both ends vertical lines of the screen become

parallel.

2-10: E/W PARA

2-11: TRAPEZIUM

Receive the crosshatch signal from the Pattern Generator.

Press the MENU button. And, then press the LEFT/

RIGHT button on the remote control until the PICTURE

menu appears.

Press the LEFT/RIGHT button on the remote control to

highlight DISPLAY FORMAT.

Press the LEFT/RIGHT button on the remote control to

select 1080i.

Set the screen mode to FULL.

Using the remote control, set the brightness and contrast

to normal position.

Activate the adjustment mode display of Fig. 1-1 and

press the channel button (16) on the remote control to

select “TRAPEZIUM”.

Press the VOL. UP/DOWN button on the remote control

until the both ends vertical lines of the screen become

parallel.

2-12: COR TOP/BTM

Receive the crosshatch signal from the Pattern Generator.

Set the screen mode to FULL.

Using the remote control, set the brightness and contrast

to normal position.

Activate the adjustment mode display of Fig. 1-1 and

press the channel button (17) on the remote control to

select “COR. TOP”.

Press the VOL. UP/DOWN button on the remote control

until the both ends vertical lines become straight.

Activate the adjustment mode display of Fig. 1-1 and

press the channel button (18) on the remote control to

select “COR. BTM”.

Press the VOL. UP/DOWN button on the remote control

until the both ends vertical lines of the screen become

parallel.

2-13: SEMSOR SAW

Receive the crosshatch signal from the Pattern Generator.

Press the MENU button. And, then press the LEFT/

RIGHT button on the remote control until the PICTURE

menu appears.

Press the LEFT/RIGHT button on the remote control to

highlight DISPLAY FORMAT.

Press the LEFT/RIGHT button on the remote control to

select 1080i.

Set the screen mode to FULL.

Activate the adjustment mode display of Fig. 1-1 and

press the channel button (22) on the remote control to

select “C.SAW”.

Press the VOL. UP/DOWN button on the remote control

until the both ends vertical lines of the screen become

parallel.

ELECTRICAL ADJUSTMENTS

D-4

2-15: TINT/COLOR CENT

10.

11.

12.

13.

14.

Receive the color bar pattern.

Connect the oscilloscope to TP806.

Activate the adjustment mode display of Fig. 1-1 and

press the channel button (53) on the remote control to

select "TINT".

Press the VOL. UP/DOWN button on the remote control

until the section "A" becomes as straight line.

(Refer to Fig. 2-2)

Connect the oscilloscope to TP805.

Activate the adjustment mode display of Fig. 1-1 and

press the channel button (49) on the remote control to

select "COL.CENT".

Press the VOL. UP/DOWN button on the remote control

until the red color level is adjusted to 105 ±10% of the

white level. (Refer to Fig. 2-3)

Please check whether the waveform of TP806 is straight

line. If is not a straight line, adjust to TINT again.

Receive the color bar pattern. (Audio Video Input)

Press the TV/VIDEO button on the remote control to set to

the AV mode. Then perform the above adjustments 2~8.

Receive the color bar pattern.

Press the TV/VIDEO button on the remote control to set to

the CS mode. Then perform the above adjustments 2~8.

Receive the color bar pattern.

Press the TV/VIDEO button on the remote control to set to

the HD-MI mode. Then perform the above adjustments

2~8.

Fig. 2-2

"A"

2-17: Confirmation of Fixed Value (Step No.)

Please check if the fixed values of the each adjustment

items are set correctly referring below.

FUNCTION

V.POSI

V-EHT

H-EHT

V-BLK P

V-BLK S

V.LIMIT

V.CORR

C.S.CORR

S.CORR

CORNER

V.SYMM

R-Y GAIN

R-Y PHASE

G-Y GAIN

G-Y PHASE

BRI.MAX

BRI.MIN

CONT.CENT

CONT.MAX

CONT.MIN

COL.MAX

COL.MIN

SHARP.CENT

SHARP.MAX

SHARP.MIN

TEST STEREO

TEST AUVIO

NO.

128

240

100

128

240

110

100

128

240

100

2-16: TILT

Connect the digital voltmeter between W843 and W844.

Receive the crosshatch signal from the Pattern Generator.

Press the PIC SIZE button on the remote control to select

the FULL screen mode.

Using the remote control, set the brightness and contrast

to normal position.

Activate the adjustment mode display of Fig. 1-1 and

press the channel button (57) on the remote control to

select “TILT CENT”.

Press the VOL. UP/DOWN button on the remote control

until the voltage become minimum(0V).

HD-MI

128

240

110

100

100%120%

"A"

2-14: SEMSOR PARA

Receive the crosshatch signal from the Pattern Generator.

Press the MENU button. And, then press the LEFT/

RIGHT button on the remote control until the PICTURE

menu appears.

Press the LEFT/RIGHT button on the remote control to

highlight DISPLAY FORMAT.

Press the LEFT/RIGHT button on the remote control to

select 1080i.

Set the screen mode to FULL.

Activate the adjustment mode display of Fig. 1-1 and

press the channel button (21) on the remote control to

select “C.PARA”.

Press the VOL. UP/DOWN button on the remote control

until the both ends vertical lines become straight.

Fig. 2-3

ELECTRICAL ADJUSTMENTS

D-5

3. PURITY AND CONVERGENCE

ADJUSTMENTS

NOTE

Turn the unit on and let it warm up for at least 30

minutes before performing the following adjustments.

Place the CRT surface facing east or west to reduce the

terrestrial magnetism.

Turn ON the unit and demagnetize with a Degauss Coil.

3-1: STATIC CONVERGENCE (ROUGH ADJUSTMENT)

Tighten the screw for the magnet. Refer to the adjusted

CRT for the position. (Refer to Fig. 3-1)

If the deflection yoke and magnet are in one body,

untighten the screw for the body.

Receive the green raster pattern from the color bar

generator.

Slide the deflection yoke until it touches the funnel side

of the CRT.

Adjust center of screen to green, with red and blue on

the sides, using the pair of purity magnets.

Switch the color bar generator from the green raster

pattern to the crosshatch pattern.

Combine red and blue of the 3 color crosshatch

pattern on the center of the screen by adjusting the pair

of 4 pole magnets.

Combine red/blue (magenta) and green by adjusting the

pair of 6 pole magnets.

Adjust the crosshatch pattern to change to white by

repeating steps 6 and 7.

3-2: PURITY

NOTE

Adjust after performing adjustments in section 3-1.

Receive the green raster pattern from color bar generator.

Adjust the pair of purity magnets to center the color on

the screen.

Adjust the pair of purity magnets so the color at the ends

are equally wide.

Move the deflection yoke backward (to neck side)

slowly, and stop it at the position when the whole screen

is green.

Confirm red and blue color.

Adjust the slant of the deflection yoke while watching the

screen, then tighten the fixing screw.

DEFLECTION YOKE

DEFLECTION YOKE SCREW

MAGNET SCREW

PURITY MAGNETS

6 POLE MAGNETS

4 POLE MAGNETS

Fig. 3-1

3-3: STATIC CONVERGENCE

NOTE

Adjust after performing adjustments in section 3-2.

Receive the crosshatch pattern from the color bar

generator.

Combine red and blue of the 3 color crosshatch

pattern on the center of the screen by adjusting the pair

of 4 pole magnets.

Combine red/blue (magenta) and green by adjusting the

pair of 6 pole magnets.

3-4: DYNAMIC CONVERGENCE

NOTE

Adjust after performing adjustments in section 3-3.

Adjust the differences around the screen by moving the

deflection yoke upward/downward and right/left.

(Refer to Fig. 3-2-a)

Insert three wedges between the deflection yoke and

CRT funnel to fix the deflection yoke.

(Refer to Fig. 3-2-b)

R G B

UPWARD/DOWNWARD SLANT RIGHT/LEFT SLANT

Fig. 3-2-a

WEDGE WEDGE

WEDGE

WEDGE POSITION

Fig. 3-2-b

Other manuals for 26HF85

Table of contents

Popular CRT TV manuals by other brands

Philips

Philips 28PW9515 - annexe 1 Product highlights

Magnavox

Magnavox MS1940B owner's manual

Magnavox

Magnavox 20MS233S - 20" Color Tv Stereo brochure

Philips

Philips 28PW8806 Product highlights

Hitachi

Hitachi C28W460N instruction manual

Philips

Philips PR1909B brochure

RCA

RCA 36V550T Specifications

Philips

Philips 14PT1353 manual

Philips

Philips 29PT9467S Specifications

Philips

Philips 4000 Series 21PT4628/V7 quick guide

Samsung

Samsung CT17K10 Owner's instructions

Sylvania

Sylvania SRT2227S Service manual

Philips

Philips 15PT2967/05S user manual

THOMSON

THOMSON 21 DC 320 B Specfications

Philips

Philips 21PT2404 Specifications

Hitachi

Hitachi CG2026S instruction manual

Philips

Philips PR1389X brochure

LG 30FS4D owner's manual

Toshiba 26HF85 User manual

Popular CRT TV manuals by other brands