SHARP 21M-FG1L Service Manual

Page1st Edition

21M-FG1L

SERVICE MANUAL

S576821MFG1L

COLOUR TELEVISION

Chassis No. GA6

MODEL

In the interests of user safety (Required by safety regulations in some countries) the set should be restored to its original condition and only parts indentical to those specified should be used.

CONTENTS

IMPORTANT SERVICE SAFETY PRECAUTION ................................................................................................... 1-1

LOCATION OF USER’S CONTROL ...................................................................................................................... 2-1

INSTALLATION AND SERVICE INSTRUCTIONS ................................................................................................. 3-1

SERVICE MODE ..................................................................................................................................................... 4-1

ADJUSTMENT METHOD ........................................................................................................................................ 5-1

WAVEFORMS ......................................................................................................................................................... 6-1

CHASSIS LAYOUT ................................................................................................................................................. 7-1

BLOCK DIAGRAM .................................................................................................................................................. 8-1

DESCRIPTION OF SCHEMATIC DIAGRAM .......................................................................................................... 9-1

SCHEMATIC DIAGRAMS ......................................................................................................................................10-1

PRINTED WIRING BOARD ASSEMBLIES ........................................................................................................... 11-1

Parts Guide

21M-FG1L

Page

ELECTRICAL SPECIFICATIONS

POWER INPUT............................AC 110-220 V, 50/60 Hz

POWER RATING .....................................................85W

PICTURE SIZE .............................1,239 cm

CONVERGENCE ............................................. Magnetic

SWEEP DEFLECTION .................................. .. Magnetic

FOCUS ........................................................ Electrostatic

INTERMEDIATE FREQUENCIES

Picture IF Carrier Frequency ...................... 45.75 MHz

Sound IF Carrier Frequency ...................... 41.25 MHz

Color Sub-Carrier Frequency ......................42.17 MHz

(Nominal) AUDIO POWER

OUTPUT RATING... ...................... 3.0 W(RMS) x 2pcs

(192sq inch)

SPEAKER

SIZE ........................................................ 2” X 3.5”, 2pcs

VOICE COIL IMPEDANCE .................16 ohm at 400 Hz

ANTENNA INPUT IMPEDANCE

VHF/UHF ........................................75 ohm Unbalanced

TUNING RANGES

VHF-Channels ................................................. 2 thru 13

UHF-Channels ................................................14 thru 69

CATV Channels ............................................. 1 thru 125

(EIA, Channel Plan U.S.A.)

Specifications are subject to change without

prior notice.

SHARP CORPORATION

This document has been published to be used for after sales service only. The contents are subject to change without notice.

21M-FG1L

TV21M-FG1LService Manual21M-FG1LMarketE

CHAPTER 1. IMPORTANT SERVICE SAFETY PRECAUTION

[1] IMPORTANT SERVICE SAFETY PRECAUTION

IMPORTANT SERVICE SAFETY PRECAUTION



Service work should be performed only by qualified service technicians who are thoroughly familiar with all safety checks and the servicing guidelines which follow:

WARNING

1. For continued safety, no modification of any circuit should be attempted.

2. Disconnect AC power before servicing.

3. Semiconductor heat sinks are potential shock hazards when the chassis is operating.

4. The chassis in this receiver has two ground systems which are separated by insulating material. The nonisolated (hot) ground system is for the B+ voltage regulator circuit and the horizontal output circuit. The isolated ground system is for the low B+ DC voltages and the secondary circuit of the high voltage transformer. To prevent electrical shock use an isolation transformer between the line cord and power receptacle, when servicing this chassis.

SERVICING OF HIGH VOLTAGE SYSTEM AND PICTURE TUBE

When servicing the high voltage system, remove the static charge by connecting a 10k ohm resistor in series with an insulated wire (such as a test probe) between the picture tube ground and the anode lead. (AC line cord should be disconnected from AC outlet.)

1. Picture tube in this receiver employs integral implosion protection.

2. Replace with tube of the same type number for continued safety.

3. Do not lift picture tube by the neck.

4. Handle the picture tube only when wearing shatterproof goggles and after discharging the high voltage anode completely.

X-RADIATION AND HIGH VOLTAGE LIMITS

1. Be sure all service personnel are aware of the procedures and instructions covering X-radiation. The only potential source of X-ray in current solid state TV receivers is the picture tube. However, the picture tube does not emit measurable X-Ray radiation, if the high voltage is as specified in the "High Voltage Check" instructions. It is only when high voltage is excessive that Xradiation is capable of penetrating the shell of the picture tube including the lead in the glass material. The important precaution is to keep the high voltage below the maximum level specified.

2. It is essential that servicemen have available at all times an accurate high voltage meter. The calibration of this meter should be checked periodically.

3. High voltage should always be kept at the rated value

−no higher. Operation at higher voltages may cause a failure of the picture tube or high voltage circuitry and;also, under certain conditions, may produce radiation in exceeding of desirable levels.

4. When the high voltage regulator is operating properly there is no possibility of an X-radiation problem. Every time a color chassis is serviced, the brightness should be tested while monitoring the high voltage with a meter to be certain that the high voltage does not exceed the specified value and that it is regulating correctly.

5. Do not use a picture tube other than that specified or make unrecommended circuit modifications to the high voltage circuitry.

6. When trouble shooting and taking test measurements on a receiver with excessive high voltage, avoid being unnecessarily close to the receiver. Do not operate the receiver longer than is necessary to locate the cause of excessive voltage.

1 – 1

IMPORTANT SERVICE SAFETY PRECAUTION

(Continued)

BEFORE RETURNING THE RECEIVER

(Fire & Shock Hazard)

Before returning the receiver to the user, perform the following safety checks.

1. Inspect all lead dress to make certain that leads are not pinched or that hardware is not lodged between the chassis and other metal parts in the receiver.

2. Inspect all protective devices such as non-metallic control knobs, insulating materials, cabinet backs, adjustment and compartment covers or shields, isolation resistor-capacity networks, mechanical insulators, etc.

3. To be sure that no shock hazard exists, check for leakage current in the following manner.

•

Plug the AC cord directly into a 110~220 volt AC outlet, (Do not use an isolation transformer for this test).

•

Using two clip leads, connect a 1.5k ohm, 10 watt resistor paralleled by a 0.15µF capacitor in series with all exposed metal cabinet parts and a known earth ground, such as electrical conduit or electrical ground connected to earth ground.

•

Use an AC voltmeter having with 5000 ohm per volt, or higher, sensitivity to measure the AC voltage drop across the resistor.

•

Connect the resistor connection to all exposed metal parts having a return to the chassis (antenna, metal cabinet, screw heads, knobs and control shafts, escutcheon, etc.) and measure the AC voltage drop across the resistor. AII checks must be repeated with the AC line cord plug connection reversed. (If necessary, a nonpolarized adapter plug must be used only for the purpose of completing these check.) Any current measured must not exceed 0.5 milliamp. Any measurements not within the limits outlined above indicate of a potential shock hazard and corrective action must be taken before returning the instrument to the customer.

DVM

AC SCALE

1.5k ohm 10W

21M-FG1L

SAFETY NOTICE

Many electrical and mechanical parts in television receivers have special safety-related characteristics. These characteristics are often not evident from visual inspection, nor can protection afforded by them be necessarily increased by using replacement components rated for higher voltage, wattage, etc. Replacement parts which have these special safety characteristics are identified in this manual; electrical components having such features are identified by " and shaded areas in the Replacement Parts Lists and Schematic Diagrams.

TO EXPOSED METAL PARTS

For continued protection, replacement parts must be identical to those used in the original circuit. The use of substitute replacement parts which do not have the same safety characteristics as the factory recommended replacement parts shown in this service manual, may create shock, fire, X-radiation or other hazards.

CONNECT TO KNOWN EARTH GROUND

1 – 2

21M-FG1L

TV21M-FG1LService Manual21M-FG1LMarketE

CHAPTER 2. LOCATION OF USER'S CONTROL

[1] LOCATION OF USER'S CONTROL

LOCATION OF USER'S CONTROL

Basic Remote Control Functions

POWER

Press

On.

Press again

FLASHBACK

Returns to previous channel.

VOLUME UP/DOWN

(+) Increases sound. (_) Decreases sound.

In menu mode, changes or selects the TV adjustments.

DISPLAY

Press for 4 seconds. Press 2 times Sleep Timer, View Timer and Clock for 4 seconds. Press 3 times

emporarily displays receiving channel mode.

MUTE

Press Press again

CLOSED CAPTION appears when sound is muted.

Off.

Displays receiving channel

Displays Off Timer,

Removes display.

when in Closed Caption

Mutes sound.

Restores sound.

POWER

FLASHBACK

VOL

MUTE DISPLAY

INPUT

100

VOL

Infrared Transmitter Window

INPUT

Switch to external video

Press INPUT mode.

Press 2 times Switch back to the original TV mode.

See page 33.

REMOTE KEYPAD

Accesses any channel from keypad.

CHANNEL UP/DOWN

( ) Selects next higher channel. (

) Selects next lower channel. See pages 27 ~ 29 for channel presetting. Moves the " " mark of the MENU screens.

Accesses MAIN MENU.

Press Press again

Exits MAIN MENU.

2 – 1

TV21M-FG1LService Manual21M-FG1LMarketE

CHAPTER 3. INSTALLATION AND SERVICE INSTRUCTIONS

[1] INSTALLATION AND SERVICE INSTRUCTIONS

INSTALLATION AND SERVICE INSTRUCTIONS

Note: (1) When performing any adjustments to resistor controls and transformers use non-metallic

screwdrivers or TV alignment tools.

(2) Before performing adjustments, the TV set must be on at least 15 minutes.

21M-FG1L

CIRCUIT PROTECTION

The receiver is protected by a 3.15A fuse (F701), mounted on PWB-A, wired into one side of the AC line input.

X-RADIATION PROTECTOR CIRCUIT TEST

After service has been performed on the horizontal deflection system, high voltage system, B+ system, test the X-Radiation protection circuit to ascertain proper operation as follows:

1. Apply 110~220V AC using a variac transformer for accurate input voltage.

2. Allow for warm up and adjust all customer controls for normal picture and sound.

3. Receive a good local channel.

4. Connect a digital voltmeter to C602 +ve Terminal and make sure that the voltmeter reads 20 ±1.1V.

5. Apply external 27V DC at C602 +VE Terminal by

using an

6. To reset the protector, unplug the AC cord and remove external 27V DC at C602 +VE Terminal. Now make sure that normal picture appears on the screen.

7. If the operation of the horizontal oscillator does not stop in step 5, the circuit must be repaired before the set is returned to the customer.

external DC supply, TV must shut off.

HIGH VOLTAGE CHECK

High voltage is not adjustable but must be checked to verify that the receiver is operating within safe and efficient design limitations as specified checks should be as follows:

1. Connect an accurate high voltage meter between ground and anode of picture tube.

2. Operate receiver for at least 15 minutes at 110~220V AC line voltage, with a strong air signal or a properly tuned in test signal.

3. Enter the service mode and set Y-mute ON by using Service R/C.

4. The voltage should be approximately 28KV (at zero beam). If a correct reading cannot be obtained, check circuitry for malfunctioning components. After the voltage test, make Y-mute off to the normal mode.

3 – 1

21M-FG1L

TV21M-FG1LService Manual21M-FG1LMarketE

CHAPTER 4. SERVICE MODE

[1] SERVICE MODE

SERVICE MODE

1. Service mode is switched by SERVICE key, CH UP + VOL DOWN when reset.

2. Service mode is cancelled by SERVICE key during service mode.

3. Service mode can be switched to the following 4 modes via MENU key;

Adjustment mode

Setting mode

Check mode

Option mode

First Mode of Service when entering by SERVICE key.

First Mode of Service when entering by 2 local keys.

4. During Service mode, AFT operation is prohibited. The setting data for PLL is always set to f

5. During Service mode, the following user data are set to default value and stored as last memory.

PICTURE/TINT/COLOR/BRIGHT/SHARP/COLOR TEMP.(FAV.COLOR) BASS/TREBLE/BALANCE/MTS/FAO/SPEAKER/ENERGY SAVE/VIEW TIMER

6. During Service mode, OSD display for ON/OFF is toggled via [CH CALL] key.



At display OFF condition, if changing adjustment data, channel, input source, it remains display OFF.



At display OFF condition, if changing adjustment item, it returns to display ON.

7. During Service mode, the following operation are prohibited. CLOSED CAPTION/No signal BLUE SCREEN/AUTO INPUT

8. During Service mode, sound is muted except when selecting the following items. V23, M01~M06

data.

4 – 1

Memory Map Data

Caution:

to get into the service mode, one of the ways is press direct key for service items.

There is three stage of Service Mode data

First stage data from V01 ~ M06 to go into second stage of service mode data, press MENU key Second stage data from F01 ~ F101 to go into third stage of service mode data, press MENU key Third stage data from O01 ~ O34

Below is the contents of these data

First Stage Data Function Range Default Data V01 CONTRAST 0~127 127 V02 TINT 0~127 64 V03 COLOR 0~127 64 V04 BRIGHT 0~255 128 V05 VIDEO-TONE 0~63 41 V06 V-SHIFT 0~7 4 V07 H-PHASE 0~31 16 V08 RF-DELAY 0~127 127 V09 V-SIZE 0~63 32 V10 V-SHIFT(OFFSET) -7~+7 0 V11 H-PHASE(OFFSET) -15~+15 0 V12 V-SIZE(OFFSET) -31~+31 0 V13 VIF-VCO 0~63 32 V14 R-CUTOFF 0~255 127 V15 G-CUTOFF 0~255 127 V16 B-CUTOFF 0~255 127 V17 R-DRIVE 0~127 64 V18 B-DRIVE 0~127 64 V19 COLOR 0~127 64 V20 BASEBAND-TINT 0~127 64 V21 CC-POS 0~255 32 V22 CUT OFF 0~2 0 V23 A-ATT 0~127 127 V24 H-VCO 0~7 4 V25 S-TRAPFINEADJ 0~15 7 V26 VS-CORRECTION 0~63 36 V27 VS-CORRECTION -13~+13 0 V28 V-LINEARITY 0~63 35 V29 V-LINEARITY -13~+13 0 M01 ATT (MTS) 0~15 10 M02 VCO (MTS) 0~63 32 M03 FILTER (MTS) 0~63 28 M04 WIDEBAND (MTS) 0~63 27 M05 SPECTRAL (MTS) 0~63 32 M06 VOL (MTS) 0~63 63

Auto Adjustment Item

1. H-VCO

2. RF-AGC

3. PIF-VCO

V LINEARITY OFFSET

MTS-WIDEBAND

MTS-SPECTRAL

SUB-VOL

SUB-PICTURE

SUB-TINT

SUB-BRIGHT

SUB-COLOR

Service Mode

SUB-SHARP

V-SHIFT

H-SHIFT

RF-AGC

V-SIZE

PIF-VCO

R-CUTOFF

G-CUTOFF

V-SHIFT50

H-SHIFT50

V-SIZE50

SCREEN CUT OFF

SUB-VOL

B-CUTOFF

R-DRIVE

B-DRIVE

SUB-COLOR(YUV)

SUB-TINT(YUV)

CC-POS

H-VCO

MTS-ATT

MTS-VCO

MTS-FILTER

S-TRAP

VS-CORRECT

VS-CORRECT OFFSET

V LINEARITY

21M-FG1L

4 – 2

21M-FG1L

Second Stage Data Function Range Default Data

F01 V-TONE 0/1 0

F02 V-TONE 0/1 0

F03 V-TONE 0/1 0

F04 ABCL 0/1 0

F05 BS-OFF 0/1 0

F06 ABCL-G 0/1 0

F07 VIDEO-TONE(OFFSET) -16~+16 0

F08 VIDEO-TONE(OFFSET) -16~+16 0

F09 VIDEO-TONE(OFFSET) -31~+31 0

F10 VIDEO-TONE(OFFSET) -31~+31 0

F11 EXTRGB-CLIP 0/1 0

F12 CONTRAST(OFFSET) 0~63 30

F13 A-ATT 0~127 120

F14 VIF-GAIN 0~7 5

F15 Y-DELAY 0~7 5

F16 Y-DELAY 0~7 5

F17 Y-DELAY 0~7 5

F18 Y-DELAY 0~7 5

F19 Y-DELAY 0~7 5

F20 Y-DELAY 0~7 5

F21 Y-DELAY 0~7 0

F22 TINT(OFFSET) -32~+32 +6

F23 COLOR(OFFSET) -32~+32 0

F24 COLOR(OFFSET) -31~+31 +24

F25 COLOR(OFFSET) -31~+31 0

F26 R-DRI(OFFSET) -32~+32 +8

F27 R-DRI(OFFSET) -32~+32 +3

F28 R-DRI(OFFSET) -32~+32 -2

F29 B-DRI(OFFSET) -32~+32 -18

F30 B-DRI(OFFSET) -32~+32 -8

F31 B-DRI(OFFSET) -32~+32 +6

F32 V-FREE 0/1 1

F33 GAMMA 0~3 1

F34 H-FREE 0/1 0

F35 V.WINDOW 0/1 0

F36 V.WINDOW 0/1 1

F37 YSW-LPF 0/1 0

F38 BS-DISCHARGE 0~3 0

F39 BS-CHARGE 0~3 0

F40 S-SLICE DOWN 0~7 2

F41 S-SLICE DOWN 0~7 2

F42 S-SLICE DOWN 0~7 0

F43 AFC2-G 0/1 0

F44 VSYNC-DET 0~3 3

F45 VSYNC-DET 0~3 2

F46 VSYNC-DET 0~3 0

F47 AUTO-SLICE 0/1 1

F48 AUTO-SLICE 0/1 1

F49 AUTO-SLICE 0/1 0

F50 FBP VTH 0/1 0

F51 FBP VTH 0/1 0

F52 FBP VTH 0/1 0

F53 C.CLIP LEVEL 0/1 0

F54 PSW 0/1 0

F55 VOL 0~63 58

F56 CHARGE PUMP 0/1 1

F57 CC LEVEL 0~31 0

F58 OSD POS 0~31 0

F59 OSD POS 1~55 38

F60 OSD POS 1~50 23

F61 COLOR -32~+32 +10

F62 TINT -32~+32 +2

OSD POS-V50

OSD POS-V60

Y-DELAY(AV-N3)

Y-DELAY(YUV)

COL-N3

SHP-P

SHP-N3

Y-DELAY(AV-P)

Service Mode

SHPG

SHPG-P

SHPG-N3

ABCL

ABCL-G

SHP-AV

RGB-CLIP

E-SAVE

FAO-VOL

SHP-YUV

PIF-G

Y-DELAY(TV)

Y-DELAY(AV-P)

Y-DELAY(AV)

Y-DELAY(TV-N3)

TINT-AV

COL-AV

R-DRI(R2)

R-DRI( R)

COL-P

R-DRI(B)

B-DRI(R2)

B-DRI( R)

B-DRI(B)

V-FREE

GAMMA

H-FREE

1W(TV)

1W(AV)

YLPF

BS-D

BS-C

SL(TV)

SL(AV)

AFC2

VD(TV)

VD(AV)

SL(YUV)

VD(YUV)

AS(TV)

AS(AV)

AS(YUV)

FBP(TV)

FBP(AV)

C.CLIP LEVEL

PSW

FBP(YUV)

FAO-VOL

CC LEVEL

OSD POS-H

OFFSET-ADJ-COL

OFFSET-ADJ-TINT

4 – 3

21M-FG1L

F63 BASEBAND-TINT -32~+32 0

F64 (SLOW MODE) 0/1 1

F65 R-CUT(OFFSET) -63~+63 0

F66 G-CUT(OFFSET) -63~+63 0

F67 B-CUT(OFFSET) -63~+63 0

F68 R-DRI(OFFSET) -63~+63 0

F69 B-DRI(OFFSET) -63~+63 0

F70 CONTRAST (OFFSET) -63~+63 0

-63~+63

˞ˮ˥ˣˤ˰

-63~+63

˞ˮ˥ˣˤ˰

0/1

0~15

0/1

Pow-Storage

SIF45 GAIN DOWN

S-TRAP OFF

CR-PEDESTEL-ADJ

CB-PEDESTEL-ADJ

SIF-BPF-WIDE

COL-SYSTEM

MCUVOUT

CTI Adj

AS-SPEED-DN

AS-SPEED-UP

V-STD-YUV

HALF-H KILLER

˲ˉˠ˨

˱ˉˠ˨

C-ANGLE

V-AGC

V-STD-TV

V-STD-AV

F98

COL-SYSTEM

BRIGHT YUV OFFSET

TRAP

TRAP-P

F80

0~3

AFC1-Gain-YUV

F79

0~3

AFC1-Gain-TV

AFC1-Gain-AV

F78

0~3

CONTRAST YUV OFFSET

˞ˮ˥ˣˤ˰

OFFSET

BRIGHT AV2 OFFSET

TRAP-N3

OM-DET

˞˯ˉˣ˽

B-DRI-YUV

CONTRAST OFFSET

R-DRI-YUV

OFFSET-ADJ-TINT-YUV

WAIT MD TIME

R-CUT-YUV

G-CUT-YUV

B-CUT-YUV

4 – 4

21M-FG1L

Third stage Data DATA="0"

DATA =" 1"

Default Data O01 DEMO DISABLE ENABLE 1 O02 V-CHIP OP DISABLE ENABLE 0 O03 V-CHIP DISABLE ENABLE 0 O04 SPEAKER DISABLE ENABLE 1 O05 FAO DISABLE ENABLE 1 O06 P.REF DISABLE ENABLE 1 O07 UNIV+ DISABLE ENABLE 0 O08 VIEW TIMER DISABLE ENABLE 1 O09 EZ-SETUP AUTO PRESET 0 O10 POWER-ON DISABLE ENABLE 0 O11 FAV-COL COL-TEMP 1 O12 COMPONENT DISABLE ENABLE 1 O13 AV DISABLE ENABLE 1 O14 AV1 AV2 1 O15 MTS DISABLE ENABLE 1 O16 S-ADJ DISABLE ENABLE 1 O17 AUTO-OFF DISABLE ENABLE 1 O18 STANDBY MODE

POWER OFF CH

0 O19 NO SET UP AUTO SET UP 1 O20 3 O21 AV3/S-IN DISABLE ENABLE 0 O22 COMB DISABLE ENABLE 0 O23 AUTO-INPUT DISABLE ENABLE 1 O24 CLOCK DISABLE ENABLE 1 O25 SEMEX MODEL SPC MODEL 0 O26 FLAT DISABLE ENABLE 1 O27 BASS BOOST DISABLE ENABLE 0 O28 DSE DISABLE ENABLE 0 O29 SRS DISABLE ENABLE 0 O30 WHITE-OUT DISABLE ENABLE 1

O31 Disable Enable 0

O32 Disable Enable 1

O33

ENGLISH 0

SPANISH 1

PORTUGUESE 2

Bit0:Spanish

Bit1:French

Bit 2: Portuguese

* POWER ON BY CH-UP / DOWN KEY.

FORCE-COL

O34

Range: 1 … 7

LANG-SEL

H-SYNC JUDGE

INIT-LANG

"0"=NO AV "1"=REAR "2"=FRONT "3"=REAR & FRONT

OPTION FUNCTION

DOWNLOAD

DEMO

V-CHIP

SPEAKER

AUTO-OFF

AV2

MTS

UNIV+

VIEW TIMER

TONE-CTRL

FAV-COL

COMPONENT

FAO

P.PREF

EZ-SETUP

*PON-CH

AV3/S-IN

COMB

AUTO-INPUT

LAST POWER

SETUP-FLAG

AV-FR

DSE

SRS

WHITE-OUT

CLOCK

LED

FLAT

BASS BOOST

4 – 5

21M-FG1L



SELF ADJUSTMENT

H-VCO

1. When there is H-VCO self-adjustment key input for adjustment item H-VCO, self-adjustment is performed.

2. H-FREE(1chip) is set to 1.

3. H-OUT is set by intelligent monitor output.

4. IM input is set as TIM input.

5. H-VCO(1chip) data is changed so that the number of input pulse is 125 inside 8ms interval.

6. When adjustment completed, OSD display and H-VCO self-adjustment status data of EEPROM are updated.

7. H-FREE(1chip), intelligent monitor output and IM input mode are recovered.

RF-AGC

1. When there is RF-AGC self-adjustment key input for adjustment item RF-AGC, self-adjustment is performed.

2. AGC-OUT is set by intelligent monitor output.

3. IM input is set as AD input.

4. By decreasing RF-AGC (1chip) data from current RF-AGC adjustment value to 0, AFT input voltage becomes the maximum setting value.

5. Increase RF-AGC(1chip) data, when AFT input voltage is at (max. 0.3V) point, adjustment is completed.

6. When adjustment completed, OSD display and RF-AGC self-adjustment status data of EEPROM are updated.

7. Intelligent monitor output and IM input mode are recovered.

PIF-VCO

1. When there is PIF-VCO self-adjustment key input for adjustment item PIF-VCO, self-adjustment is performed.

2. VIF-DEF(1chip) is set to 1.

3. AFC is set by intelligent monitor output.

4. IM input is set as AD input.

5. VIF-VCO(1chip) data is changed so that input voltage becomes 2.5V.

6. When adjustment completed, OSD display and PIF-VCO self-adjustment status data of EEPROM are updated.

7. VIF-DEF(1chip), intelligent monitor output and IM input mode are recovered.

4 – 6

21M-FG1L

MODEL NAME

ADJUSTMENT ITEM

ADJUSTMENT POSITION

CONTROL

PRE-ADJUST REQUIREMENT

CONTENT

INPUT

CONDITION

OUTPUT

BUS OPTION

FOR THIRD STAGE SERVICE DATA

FUNCTION

O01 O02 O03 O04 O05 O06 O07 O08 O09 O10

DEMO DO WNLOAD V-CHIP SP FAO P.PREF UNI V+ VIEW EZ PON-CH

ADJUSTMENT 21M-FG1L 1 0 0 1 1 0 0 1 0 1 PROCEDURE

DEF

"0"= DISABLE

009 --> "0"= EZ-SETUP "1"= AUTO PRESET

BUS OPTION

FOR THIRD STAGE SERVICE DATA

FUNCTION

O11 O12 O13 O14 O15 O16 O17 O18 O19 O20

FAV-COL COMP AV AV2 MTS TONE AUTO

Last Pow

SETUP AV-FR

21M-FG1L 1 0 1 1 1 1 1 0 1 3

FUNCTION

O21 O22 O23 O24 O25 O26 O27 O28 O29 O30

AV3 COMB A-IN CLOCK LED FLAT BASS DSE SRS WHITE

21M-FG1L 0 0 0 0 1 1 0 0 0 0

FUNCTION

O31 O32

FORCE COL

H-SYNC

21M-FG1L 0 1

DEF O11 --> "0" =FAV-COL "1"= COL-TEMP

O33 --> "0"= ENGLISH "1"= SPANISH "2"=PORTUGUESE O19--> "0"= NO SET UP "1" = AUTO SETUP

O20--> "0"=NO AV "1"=REAR "2"=FRONT "3"=REAR&FRONT

O25--> "0"= SEMEX SPEC "1" = SPC SPEC

O34-->"1"ENGLISH+SPANISH

HISTORY

OF REVISION

SYMBOL

21M-FG1L

OPTION SET UP

REFER AS BELOW

STEP RANGE

REFER AS BELOW

21M-FG1L OSD CHECKING

REVISED CONTENT .

"1"=ENABLE

O33

INITIAL LAN

O34

LANG-SEL

TV21M-FG1LService Manual21M-FG1LMarketE

CHAPTER 5. ADJUSTMENT METHOD

[1] ADJUSTMENT METHOD

5 – 1

MODEL NAME

ADJUSTMENT ITEM

ADJUSTMENT POSITION

CONTROL

PRE-ADJUST REQUIREMENT

CONTENT

INPUT

CONDITION

OUTPUT

DATA SETUP

FOR FIRST AND SECOND STAGE SERVICE DATA

FUNCTION

V05 V26 V28

SHARP VS COR V-LIN

ADJUSTMENT 21M-FG1L 38 37 13 PROCEDURE

DEF

FUNCTION

21M-FG1L

DEF

SYMBOL

F100

F14

F23

F22

TINT-AV

-1

OSD CHECKING

HISTORY

OF REVISION

REVISED CONTENT .

PIF-G

21M-FG1L

BUS SET UP

REFER AS BELOW

STEP RANGE

REFER AS BELOW +2

OFFSET ADJ TINT

SIF45 GAIN DOWN

COL-AV

F61

OFFSET ADJ COL

+14

F62

V25

S-TRAP

F17

Y-DELAY (TY-N3)

21M-FG1L

5 – 2

21M-FG1L

ADJUSTMENT ITEM

ADJUSTMENT POSITION

CONTROL

PRE-ADJUST REQUIREMENT

CONTENT

INPUT

CONDITION

OUTPUT

ADJUSTMENT

PROCEDURE

LEFT AND RIGHT SYMMETRICAL

SYMBOL

I2C BUS CONTROL

OPTION SET UP, BUS SET UP,CRT-PURITY

MODEL NAME

H-POSITION

STEP RANGE

V07

0-31

21M-FG1L

US 4 CH LION HEAD (MONOSCOPE)

AC 220V, US MAGNETIC FIELD

1.ADJUST THE

V07

BUS DATA TO HAVE A BALANCE POSITION TO SPEC OF

A=B

2.IF CANNOT MAKE IT TO

A=B

, ADJ FROM THE BEST POINT SO THATBSLIDELY SMALLER

THAN

[CHECKING SPEC]

CONFIRMATION BY CRT SCREEN

HISTORY

OFREVISION

REVISED CONTENT .

B A

5 – 3

21M-FG1L

ADJUSTMENT ITEM

ADJUSTMENT POSITION

CONTROL

PRE-ADJUST REQUIREMENT

CONTENT

INPUT

CONDITION

OUTPUT

ADJUSTMENT

PROCEDURE

SYMBOL

CONFIRMATION BY CRT SCREEN

ADJUST THE V09 BUS DATA UNTILL THE OVERSCAN BECOME AS SPECIFIED BELOW.

CAUTION:- PLEASE AGING TV MORE THAN 10 MINUTES BEFORE ADJUSTMENT.

[CHECKING SPEC]

OVERSCAN 10 ± 2.5%

I2C CONTROL

OPTION SET UP, BUS SET UP,CRT PURITY, V-PHASE , +B ADJUST

US4CHLIONHEAD

AC 220

MODEL NAME

V-SIZE

V09

STEP RANGE

0~63

21M-FG1L

HISTORY

OFREVISION

REVISED CONTENT .

5 – 4

21M-FG1L

ADJUSTMENT ITEM

ADJUSTMENT POSITION

CONTOROL

PRE-ADJUST REQUIREMENT

CONTENT

INPUT

CONDITION

OUTPUT

ADJUSTMENT

PROCEDURE

SYMBOL

CONFIRMATION ON CRT SCREEN

ADJUST V06 BUS DATA TO HAVE A MOST ACCEPTABLE VERTICAL POSITION.

THE MONOSCOPE PATTERN SHOULD BE BALANCE IN VERTICAL POSITION

NOTE: THE DATA FOR V06 LIMIT AT <= 04,EVEN POSITION NOT GOOD ENOUGH

[CHECKING CONFIRM ATION ]

I2C CONTROL

OPTION SET UP, BUS SET UP, CRT PURITY

US 4 CH LION HEAD (MONOSCOPE PATTERN)

220 V, RF INPUT, ZERO MAGNETIC FIELD

MODEL NAME

V-PHASE

V06

STEP RANGE

0-7

21M-FG1L

HISTORY

OFREVISION

REVISED CONTENT .

5 – 5

21M-FG1L

ADJUSTMENT ITEM

ADJUSTMENT POSITION

CONTROL

PRE-ADJUST REQUIREMENT

CONTENT

INPUT

CONDITION

OUTPUT

ADJUSTMENT

PROCEDURE

LEFT AND RIGHT SYMMETRICAL THEN V21 DATA REDUCE 5 STEP.

SYMBOL

MODEL NAME

CLOSED CAPTION SET UP

V21

STEP RANGE

0-255

21M-FG1L

CONFIRMATION ON CRT DISPLAY.

1)BY SELECTING THE

V21

, BOX BLK TEXT WILL BE APPEARED.

2)ADJUST THE

V21

BUS DATA TO HAVE A BALANCE POSITION TO SPEC OF A=B.

[CHECKING SPEC]

I2C CONTROL

OPTION SET UP, BUS SET UP

US4CHLIONHEAD

AC 220

HISTORY

OFREVISION

REVISED CONTENT .

TEXT BOX BLK

5 – 6

21M-FG1L

ADJUSTMENT ITEM

ADJUSTMENT POSITION

CONTROL

PRE-ADJUST REQUIREMENT

CONTENT

INPUT

CONDITION

OUTPUT

ADJUSTMENT

PROCEDURE

SYMBOL

HISTORY

OF REVISION

REVISED CONTENT .

IC 801 PIN 15

(MANUAL ADJ)

1) GO TO SERVICE MODE,

2) GO TO SERVICE DATA

V24

, ADJ UNTIL FREQ AS BELOW

(SELF ADJ)

1) GO TO SERVICE MODE, BY SELECTING THE SERVICE DATA V24

2) PRESS THE R/C TO OPERATE AUTO H-VCO, OSD APPEAR "OK" AT SCREEN

3) IF APPEAR "NG" PLS REPEAT STEP 2

[CHECKING SPEC]

FREQ = 15.735 ± .02 KHz

I2C CONTROL

OPTION SET UP, BUS SET UP NO SIGNAL (RASTER) CONDITION

AC 220

MODEL NAME

H-VCO

V24

STEP RANGE

0-7

21M-FG1L

5 – 7

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