Sharp 21SFX10L Schematic

1st Edition

21S-FX10L

SERVICE MANUAL

S2912521SFX10L

COLOUR TELEVISION

Chassis No. GA8S

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

21S-FX10L

Page

ELECTRICAL SPECIFICATIONS

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

POWER RATING .....................................................92W

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 4pcs

(192sq inch)

SPEAKER

SIZE ........................................................ 9 x 5cm, 4pcs

VOICE COIL IMPEDANCE .................32 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.

21S-FX10L

TV21S-FX10LService Manual21S-FX10LMarketE

CHAPTER 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.

21S-FX10L

•

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

SAFETY NOTICE

Many electr ical 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 or iginal 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

21S-FX10L

TV21S-FX10LService Manual21S-FX10LMarketE

CHAPTER 2. LOCATION OF USER'S CONTROL

[1] LOCATION OF USER'S CONTROL

FRONT AV & REAR AV CONTROLS

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REMOTE CONTROL FUNCTION

POWER

Turns the TV on or to Standby mode.

P. I N

Switches M.P. IN mode on or off.

MTS

Allows reception of stereo or billingual (TV sound).

Number buttons

FLASHBACK

Returns to previously viewed channel.

FAVORITE CHANNELS BUTTONS (A/B/C/D)

Operate the Favorite Channel.

SURROUND

Switches between ÒOFFÓo r Ò 10 Ó (during receiving signal stereo).

RESET

Resets all settings.

8 /9 /; /:

Selects the MENU items, adjusts the volume and selects the channel.

DISPLAY

Displays the channel and timer settings on the screen.

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Infrared transmitter window

Aim this window at the infrared sensor window on your TV set.

INPUT

Switches between TV broadcasts and AV input programs.

VOLUME UP/DOWN

Adjusts the volume. Used for MENU setup.

CHANNE

L UP/DOWN

Selects the channel. Used for MENU setup.

AV MODE

Switches between MOVIE, MUSIC and NEWS.

Switches between Closed Caption service type.

MUTE

Mutes the sound and restores sound to previous level.

LANGUAGE

Changes the on-screen display language.

Calls the MENU screen.

To Audio/Video in terminals

2 – 1

TV21S-FX10LService Manual21S-FX10LMarketE

CHAPTER 3. 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.

21S-FX10L

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 and make sure that the voltmeter reads 20 ±1.1V.

5. Apply external 28.5V DC at C602 +ve by using an external DC supply, TV must be shut off.

6. To reset the protector, unplug the AC cord and make a shor t circuit between C602 -ve and C602 +ve. 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.

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 26kV (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

21S-FX10L

TV21S-FX10LService Manual21S-FX10LMarketE

CHAPTER 4. SERVICE MODE

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

2. Service mode is c ancelled by SERVICE key during Service mode.

3. Service mode can be switched to the following 5 modes via MENU k ey:

SERVICE MODE

Adjustment mode

Setting mode

Confirmation mode

Option mode

NVM Edit mode

4䋮During Service mode, AFT operation is prohibited. The setting data for PLL is always set to fo data. 5䋮During Service mode, the following user data are set to default value and stored as last memory.

PICTURE䋯TINT䋯COLOR䋯BRIGHT䋯SHARP䋯COLOR TEMP. BASS䋯TREBLE䋯BALANCE䋯MTS䋯FAO䋯SPEAKER䋯ENERG Y SAVE

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

䊶At display OFF condition, if changing adjustment data, channel, input source, it remains display OFF. 䊶At display OFF condition, if changing adjustment item, it returns to display ON.

7䋮During Service mode, the following operation are prohibited.

CLOSED CAPTION䋯No si gnal BLUE SCREEN

8䋮During Service mode, sound is muted(only MTSIC) except when selecting the following items.

V24, M01

First mode of service when entering by SERVICE key.

First mode of service when entering by 2 local keys.

4 – 1

Adjustment Mode Items

Data Service Mode Function Range Default Data

V01 SUB-CON CONTRAST 0~127 127 V02 SUB-TINT TINT 0~127 64 V03 SUB-COL COLOR 0~127 64 V04 SUB-BRI BRIGHT 0~255 128 V05 SUB-SHP-PRE VIDEO-TONE(PRE) 0~63 41 V06 SUB-SHP-OVER VIDEO-TONE(OVER) 0~63 41 V07 V-SHIFT V-SHIFT 0~7 4 V08 H-SHIFT H-PHASE 0~31 16 V09 RF-AGC RF-DELAY 0~127 127 V10 V-SIZE V-SIZE 0~63 32

V11 V-SHIFT50 V-SHIFT(OFFSET) -7~+7 0 V12 H-SHIFT50 H-PHASE(OFFSET) -15~+15 0 V13 V-SIZE50 V-SIZE(OFFSET) -31~+31 0 V14 VIF-VCO VIF-VCO 0~63 32 V15 R-CUT R-CUTOFF 0~255 127 V16 G-CUT G-CUTOFF 0~255 127 V17 B-CUT B-CUTOFF 0~255 127 V18 R-DRI R-DRIVE 0~127 64 V19 B-DRI B-DRIVE 0~127 64 V20 SUB-COLOR-YUV COLOR 0~127 64 V21 SUB-TINT-YUV BASEBAND-TINT 0~127 64 V22 CC-POS CC-POS 0~255 32 V23 SCREEN CUT OFF CUT OFF 0~2 0

V24 SUB-VOL A-ATT

V25 H-VCO H-VCO 0~7 4 V26 S-TRAP S-TRAP ADJ 0~127 64 V27 VS-CORRECT VS-CORRECTION 0~63 36 V28 VS-CORRECT50 VS-CORRECTION -13~+13 0 V29 V LINEARITY V-LINEARITY 0~63 35 V30 V LINEARITY50 V-LINEARITY -13~+13 0 V31 PARABOLA E/W PARABOLA 0~63 32 V32 PARABOLA50 E/W PARABOLA -13~+13 0 V33 TRAPEZIUM E/W TRAPEZIUM 0~63 32 V34 TRAPEZIUM50 E/W TRAPEZIUM -13~+13 0 V35 H-SIZE E/W H-SIZE 0~63 32 V36 H-SIZE50 E/W H-SIZE -13~+13 0 V37 UPPER CORNER E/W UPPER CORNER 0~63 32 V38 UPPER CORNER50 E/W UPPER CORNER -13~+13 0 V39 LOWER CORNER E/W LOWER CORNER 0~63 32 V40 LOWER CORNER50 E/W LOWER CORNER -13~+13 0 V41 ANGLE ADJ ANGLE ADJ 0~63 31 V42 ANGLE ADJ50 ANGLE ADJ -13~+13 0 V43 BOW ADJ BOW ADJ 0~63 31 V44 BOW ADJ50 BOW ADJ -13~+13 0 V45 S-TRAP ADJ START S-TRAP ADJ 0~127 25 V46 S-TRAP STOP S-TRAP ADJ 0~127 95 M01 MTS-ATT DIRECT OUT LEVEL ADJ 0~15 10

㩷㩷㩷㩷Note 䋱䋩 V23 = "1" … HORIZONTAL MODE

V23 = "2" … Y-MUTE MODE

㩷㩷㩷㩷Note 䋲䋩 V24䋺These registers are set to maximum value.

0~127 (O20=0) 0~255 (O20=1)

21S-FX10L

127 255

4 – 2

21S-FX10L

(

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H-VCO

1. When there is H-VCO auto adjustment key input at item

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

3. H-OUT (1chip) is set by intelligent monitor output.

4. IM input becomes TIM input.

5. H-VCO (1chip) data is changed so that the number is 126 inside 8ms interval.

6. When adjustment is completed, OSD display and H-VCO auto adjustment data of EERPOM are updated.

7. H-FREE

RF-AGC

1. If there is RF-AGC auto adjustment key input at item RF-AGC, auto adjustment will be implemented.

2. AGC-OUT (MONITOR(1chip)is set by intelligent monitor output.

3. IM input becomes AD input.

4. RF-AGC(1chip) is decreased from current RF-AGC value to 0, the maximum AFT input voltage is obtained.

5. RF-AGC(1chip) is increased until at the point of AFT input voltage is (max. 0.3V), adjustment is completed.

6. When adjustment is completed, OSD display and RFGC auto adjustment status in EEPROM are updated.

7. Intelli

AUTO ADJUSTMENT

H-VCO, auto adjustment will be implemented.

1chip), intelligent monitor output, IM input mode are recovered.

ent monitor output, IM input mode are recovered.

PIF-VCO

1. If there is PIF-VCO auto adjustment key input at item PIF- VCO, auto adjustment will be implemented.

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

3. AFT output (1chip) is set by intelligent monitor output.

4. IM input becomes AD input.

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

6. When adjustment is completed, OSD display and PIF-VCO auto adjustment status in EEPROM are updated.

7. VIF-DEF

1chip)intelligent monitor output, IM input mode are recovered.

S-TRAP

1. If there is S-TRAP auto adjustment key input at item S-TRAP, auto adjustment will be implemented.

2. S-TRAP OUTPUT is set by intelligent monitor output.

3. IM input becomes AD input.

4. S-Trap (1chip) is set to the value of V45(S-TRAP ADJ Start).

5. S_Trap_Result is set to the value of V45(S-TRAP ADJ Start).

6. S-Trap (1chip) is increased until the minimum input voltage becomes minimum.

7. Wait 20ms before sampling the new_ AD_data.

8. When adjustment is completed, OSD display and S-TRAP auto adjustment status in EEPROM are updated.

9. S-TRAP

1chip)intelligent monitor output, IM input mode are recovered.

4 – 3

Setting Mode Items

21S-FX10L

Data Service Mode Range Default Data F01 ABCL-Gain 0/1 0 F02 SHP-AV-PRE -16~+16 0 F03 SHP-YUV-PRE -16~+16 0 F04 SHP-P-PRE -31~+31 0 F05 SHP-N3-PRE -31~+31 0 F06 SHP-AV-OVER -16~+16 0 F07 SHP-YUV-OVER -16~+16 0 F08 SHP-P-OVER -31~+31 0 F09 SHP-N3-OVER -31~+31 0 F10 SHP ANT-ON II OFFSET -15~0 -10 F11 RGB-CLIP 0/1 0 F12 E-SAVE 0~63 30

F13 FAO-VOL A-ATT

F14 VIF-G 0~7 5 F15 YDL-TV 0~7 5 F16 YDL-TV-P 0~7 5 F17 YDL-TV-N3 0~7 5 F18 YDL-AV 0~7 5 F19 YDL-AV-P 0~7 5 F20 YDL-AV-N3 0~7 5 F21 YDL-YU F22 TINT-AV -32~+32 6 F23 COL-AV -32~+32 0 F24 COL-P -31~+31 24 F25 COL-N3 -31~+31 0 F26 R-R -32~+32 3 F27 R-B -32~+32 -2 F28 B-R -32~+32 -8 F29 B-B -32~+32 6 F30 GAMM F31 BS-D 0~3 0 F32 BS-C 0~3 0 F33 SL-TV 0~7 2 F34 SL-AV 0~7 2 F35 SL-YUV 0~7 0 F36 AFC2 0/1 0 F37 VD-TV 0~7 5 F38 VD-AV 0~7 7 F39 VD-YUV 0~7 1 F40 AS-TV 0/1 1 F41 AS-AV 0/1 1 F42 AS-YUV 0/1 0 F43 FBP-TV 0/1 0 F44 FBP-AV 0/1 0 F45 FBP-YUV 0/1 0 F46 C.Clip Level 0/1 0 F47 CP 0/1 1 F48 CC LEVEL 0~31 0 F49 OSD POS-H 0~31 0 F50 OSD POS-V50 1~55 38 F51 OSD POS-V60 1~50 23 F52 OFFSET-ADJ-COLO F53 OFFSET-ADJ-TINT -32~+32 2 F54 F55 R-CUT-YU

WAIT㩺 MD㩺 TIMER

V 0~7 0

Function ABCL-G VIDEO-TONE (PRE) VIDEO-TONE (PRE) VIDEO-TONE (PRE) VIDEO-TONE (PRE) VIDEO-TONE (OVER) VIDEO-TONE (OVER) VIDEO-TONE (OVER) VIDEO-TONE (OVER) VIDEO-TONE EXTRGB-CLIP CONTRAST(OFFSET)

VIF-GAIN Y-DELAY Y-DELAY Y-DELAY Y-DELAY Y-DELAY Y-DELAY Y-DELAY TINT(OFFSET) COLOR(OFFSET) COLOR(OFFSET) COLOR(OFFSET) R-DRI(OFFSET) R-DRI(OFFSET) B-DRI(OFFSET) B-DRI(OFFSET) GAMMA BS-DISCHARGE BS-CHARGE S-SLICE DOWN S-SLICE DOWN S-SLICE DOWN AFC2-G VSYNC-DET VSYNC-DET VSYNC-DET AUTO-SLICE AUTO-SLICE AUTO-SLICE FBP VTH FBP VTH FBP VTH C.CLIP LEVEL CP CC LEVEL OSD POS OSD POS OSD POS COLOR TINT (SLOW MODE) R-CUT (OFFSET)

0~127 (O20=0) 120 0~255 (O20=1) 246

0~3 1

-32~+32 10

0/1 1

-63~+63 0

4 – 4

21S-FX10L

F56 G-CUT-YU F57 B-CUT-YUV -63~+63 0 F58 R-DRI-YUV -63~+63 0 F59 B-DRI-YUV -63~+63 0 F60 CONTRAST OFFSE F61 CONTRAST YUV OFFSE F62 BRIGHT OFFSET -63~+63 0 F63 BRIGHT AV2 OFFSET -15~+15 F64 BRIGHT YUV OFFSE F65 TRAP F66 TRAP-P F67 TRAP-N3 F68 AFC1-Gain-TV 0~3 0 F69 AFC1-Gain-AV 0~3 3 F70 AFC1-Gain-YUV 0~3 3 F71 OM-DE F72 䌂䌓䋭䌇䌡䌩䌮 F73 C-ANGLE F74 䌖䋭䌄䌌 F75 䌕䋭䌄䌌 F76 AS-SPEED-DN F77 AS-SPEED-UP F78 CR-PEDESTEL-ADJ F79 CB-PEDESTEL-ADJ F80 SIF-BPF-WIDE F81 SIF-BPF-WIDE-LOW 0/1 0 F82 SIF-BPF-WIDE-HIGH 0/1 0

G-CUT (OFFSET) B-CUT (OFFSET) R-DRI (OFFSET) B-DRI (OFFSET) CONTRAST(OFFSET) CONTRAST(OFFSET) BRIGHT (OFFSET) BRIGHT (OFFSET) BRIGHT (OFFSET) TRAP-FINE TRAP-FINE TRAP-FINE AFC1-G AFC1-G AFC1-G OM-Det BS-Gain C.ANGLE V-DL Fine U-DL Fine AS-SPEED-DN AS-SPEED-UP Cr Pedestal Adj. Cb Pedestal Adj. SIF BPF WIDE SIF BPF WIDE LOW SIF BPF WIDE HIGH

-63~+63 0

-63~+63 0 0~3 2 0~3 2 0~3 2

0/1 0 0/1 0 0/1 0 0~3 0 0~3 0 0/1 0 0/1 0 0~15 8 0~15 8 0~7 3

0: 11XX (AUTO)

F83 COL-SYSTEM COL-SYSTEM

1: 0011 (PAL-M) 2: 0111 (PAL-N) 3: 0110 (N358)

F84 Pow-Storage 0/1 1

F85 SIF45 GAIN DOWN F86 S-TRAP OFF F87 BASS OFFSET F88 MID1 OFFSE F89 MID2 OFFSE F90 MID3 OFFSE F91 TREBLE OFFSET F92 AVL LEVEL

CONTRAST/BRIGHTNESS INCREASE GRADUALLY

SIF45 GAIN DOWN S-Trap BASS AUDIO EQ MID1 AUDIO EQ MID2 AUDIO EQ MID3 TREBLE AUDIO AVL LEVEL

0/1 0 0/1 1

-4~+4 0

-4~+4 0 0~3 0 0:fixto0

F93 AVL OPTION AVL ON

1:fixto1 2: AVL in SOUND MENU

F94 AU-ATT AMP

AU ATTOUT GAIN

0 (0dB)/1(3dB) 0 0: 10% 1: 30% 2: 50% 3: 70%

4: 90% F96 R MTX UP F97 MATRIX ADJ F98 SAP LEVEL F99 STEREO SENS F100 SAP SENS

R MTX UP MATRIX ADJ SAP LEVEL STEREO SENS SAP SENS

0/1 0

0~3 0

0/1 0

3F95 OSD LEVEL OSD LEVEL

4 – 5

21S-FX10L

F101 MER 0~255 70

F102 MEL1 F103 MEL2 F104 MEL3 F105 MEL4 F106 MEL5 F107 MEL6 F108 S-St-Point F109 S-Sp-Point F110 S-Step F111 CONT NEWS F112 CONT MUSIC F113 CONT MOVIE F114 BRIGHT NEWS F115 BRIGHT MUSIC F116 BRIGHT MOVIE F117 COL NEWS F118 COL MUSIC F119 COL MOVIE F120 SHARP NEWS F121 SHARP MUSIC F122 SHARP MOVIE F123 SURR NEWS F124 SURR MUSIC F125 SURR MOVIE F126 TREBLE NEWS F127 TREBLE MUSIC F128 TREBLE MOVIE F129 BASS NEWS F130 BASS MUSIC F131 BASS MOVIE F132 EQ BASS NEWS F133 EQ BASS MUSIC F134 EQ BASS MOVIE F135 EQ MID1 NEWS F136 EQ MID1 MUSIC F137 EQ MID1 MOVIE F138 EQ MID2 NEWS F139 EQ MID2 MUSIC F140 EQ MID2 MOVIE

S-BOOSTER FREQ. CHARACTERISTIC CONTROL

S-BOOSTER LEVEL1 S-BOOSTER LEVEL2 S-BOOSTER LEVEL3 S-BOOSTER LEVEL4 S-BOOSTER LEVEL5 S-BOOSTER LEVEL6 S-BOOSTER START POINT S-BOOSTER STOP POINT S-BOOSTER STEP CONTRAST SETTING- NEWS CONTRAST SETTING- MUSIC CONTRAST SETTING- MOVIE BRIGHTNESS SETTING- NEWS BRIGHTNESS SETTING- MUSIC BRIGHTNESS SETTING- MOVIE COLOUR SETTING- NEWS COLOUR SETTING- MUSIC COLOUR SETTING- MOVIE SHARPNESS SETTING- NEWS SHARPNESS SETTING- MUSIC SHARPNESS SETTING- MOVIE SURROUND SETTING- NEWS SURROUND SETTING- MUSIC SURROUND SETTING- MOVIE TREBLE SETTING- NEWS TREBLE SETTING- MUSIC TREBLE SETTING- MOVIE BASS SETTING- NEWS BASS SETTING- MUSIC BASS SETTING- MOVIE EQ BASS SETTING- NEWS EQ BASS SETTING- MUSIC EQ BASS SETTING- MOVIE EQ MID1 SETTING- NEWS EQ MID1 SETTING- MUSIC EQ MID1 SETTING- MOVIE EQ MID2 SETTING- NEWS EQ MID2 SETTING- MUSIC EQ MID2 SETTING- MOVIE

0~255 150 0~255 156 0~255 163 0~255 165 0~255 170 0~255 180 0~60 0~60 0~60 0~60 0~60 0~60

-30~+30

-30~+30 0(OFF)/1(ON) 0(OFF)/1(ON) 0(OFF)/1(ON)

-10~+10

21 60

7 40 50 60

+10

-10 0 5 0 0 0

-10 0

-5 0

+10

0 0 0 0 0 0 0 0 0-10~+10

4 – 6

21S-FX10L

F141 EQ MID3 NEWS F142 EQ MID3 MUSIC F143 EQ MID3 MOVIE F144 EQ TRE NEWS F145 EQ TRE MUSIC F146 EQ TRE MOVIE F147 S-BOOST NEWS F148 S-BOOST MUSIC F149 S-BOOST MOVIE F150 CORNER UP-LOW EN EW CNUPLOW EN 1 F151 BOW/ANGLE-ON/OFF BOW/ANGLE 1 F152 SHP-NR-OFFSET VIDEO TONE 0 F153 V-FREE60 V-FREE60 1 F154 TAKEOFF TV TAKE-OFF 0 F155 STRAP OFFSET S-TRAP ADJ 0 F156 RGB MUTE TIME 0 F157 H-BLK LEFT H-BLK LEFT 0

EQ MID3 SETTING- NEWS EQ MID3 SETTING- MUSIC EQ MID3 SETTING- MOVIE EQ TRE SETTING- NEWS EQ TRE SETTING- MUSIC EQ TRE SETTING- MOVIE S-BOOSTER SETTING- NEWS S-BOOSTER SETTING- MUSIC S-BOOSTER SETTING- MOVIE

-10~+10

-10~+10 0(OFF)/1(ON) 0(OFF)/1(ON) 0(OFF)/1(ON) 0/1 0(OFF)/1(ON)

-15~0 0/1 0/1

-16~+16 0~8 0~7

F158 H-BLK RIGHT H-BLK RIGHT 00~7

0: 5ms

F159 H-STOP DELAY H-START

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TV21S-FX10LService Manual21S-FX10LMarketE

CHAPTER 5. ADJUSTMENT METHOD

ADJ ITEM: BUS SET UP (1ST & 2ND STAGE SERVICE DATA)

21S-FX10L

SERVICE ITEMS

V05 V06 V20 V21 SUB-TINT-YUV V27 V29 V LINEARIT V43 BOW ADJ F02

F03

F06 F07 F13

SUB-SHP-PRE SUB-SHP-OVER SUB-COLOR-YUV

VS-CORRECT

SHP-AV-PRE

SHP-YUV-PRE SHP-AV-OVER

SHP-YUV-OVER FAO-VOL

34 18 41 54 35 ADJUST IF NECESSARY 37 32

-10

-14

-10

-14 81

F14 VIF-G F20 YDL-AV-N3 F22 TINT-AV F23 COL-AV

-16

+10 F26 R-R +7 F27 F28 F29 F30 F33

R-B B-R B-B GAMMA SL-TV

-20 +9

F36 AFC2 F37

VD-TV

F38 VD-AV F39 VD-YUV 0 F49 F50 F51 F52 F53 F55 F56 F58 F59 F61

OSD POS-H OSD POS-V50 OSD POS-V60 OFFSET-ADJ-COLOR OFFSET-ADJ-TINT R-CUT-YUV G-CUT-YUV R-DRI-YUV B-DRI-YUV CONTRAST YUV OFFSET

13 48 32 +3 +9

-2

-24

-1 +1 +6

F63 BRIGHT AV2 OFFSET +4 F64 BRIGHT YUV OFFSET +17 F65 TRAP 0 F80 SIF-BPF-WIDE 1 F85 SIF45 GAIN DOWN 1 F86 S-TRAP OFF 0 F92 AVL LEVEL 1 F94 AU-ATT AMP 1 F111 CONT NEWS 50 F112 CONT MUSIC 60 F117 F119 F120 F122 F126 F128 F129 F131 F132 F133 F134 F136 F137 F138 F139 F141 F143 F144 F145 F146 F156 F158

COL NEWS COL MOVIE SHARP NEWS SHARP MOVIE TREBLE NEWS TREBLE MOVIE BASS NEWS BASS MOVIE EQ BASS NEWS EQ BASS MUSIC EQ BASS MOVIE EQ MID1 MUSIC EQ MID1 MOVIE EQ MID2 NEWS EQ MID2 MUSIC EQ MID3 NEWS EQ MID3 MOVIE EQ TRE NEWS EQ TRE MUSIC EQ TRE MOVIE RGB MUTE TIME H-BLK RIGHT

-6 +6

-1 +2 +1 +1 +1 +1

-2 +1 +2

-1 +5 +2

REMARK21S-FX10L

TO IMPROVE

7 4

3 1 1 1 2

0 0 0 0

1 3

5 – 1

21S-FX10L

ADJ ITEM: OPTION SET UP (3RD STAGE SERVICE DATA)

SERVICE ITEMS

21S-FX10L

O01 LNA TUNER 0 O02 FAO 1 O03 PON-CH 1 O04

ANTENNA BOOSTER

0 O05 AV 1 O06 AV2 1 O07 MTS 1 O08 COMPONENT 2 O09 TONE-CTRL 2 O10 AUTO-OFF 1 O11 LAST POWER 0 O12 SETUP-FLAG 1 O13 AV MODE 1 O14 MP-IN 1 O15 S-BOOSTER 0 O16 FORCE-COL 0 O17 INIT-LANG 1 O18 LANG-SEL 1 O19 ARROW-KEY 1 O20

VOL-TABLE AUTO-JUDGEMENT

O21 O22 WHITE-OUT O23

H-SYNC JUDGE O24 CHSET COLOR O25 DEMO O26 FLAT

0 1

0 1 0 1

1 O27 F/R-AV 3 O28 SPEAKER 1

O29 VOL-CURVE 1

5 – 2

ADJUSTMENT PRECAUT

CHECKING

DJUSTMEN

PIF A

TMENT POIN

ADJUS

CUS ADJUSTME

1 FOCUS (1) Receive

RF-AGC

KE OVER P

USTMENT (2) Connect t

ADJ

(I2C BUS CONTROL) figure 3-1

UTO & MANUAL

USTMENT POIN

(1) Recei

OINT

DJ)

(3) Call V0

(4) Ch

(5)T

modulationbeat.

(2) Press RESET to set Picture N (3) Adjust the focus control to get the bes

ke sure TV Set is in "NORMAL CON

ION :Ma

ADJUSTMENT CONDITION/PROCEDUR

ve the "US 10 CH HALF Color B

Strength: 56 ± 1dBμV (75 ohm open)

Signal

he oscillos .

0.1V

Bias Box : about 4.5V

9 i

outputpindrop 0.1V b

ge the antenna inpu

onois

rn uptheinput s

cop

OSCILLO

Fig. 3

n service mode. Adjust the V09busdatatoobtain theT

elow maximum voltage.

ignal to 9

ION HEAD Signal

4CHL

ar" signal

oJA402(Tuner's AGC Terminal) as shown in

SCOPE

BIAS BOX

-1

signal to 63 ~67dBμV, and makes

~95dBμVto be sure that the

ADJUSTMENT

(NTSC60Hz).

ORMAL condition.

focusing.

402

SET

re i

NDITION / PROCE

re the

uner

o cross

DITION" b

fore switch to Service Mode for Adj

for Auto ADJ

1)Receive "NTSC C gnal strength :56±1dBμV(75ohmo

ervice mode.

1) Go to s

to servic

2) Go

"Auto-AGC" key and confirm the OK display on the screen

)Ifappear red display w

ep and pleas

4) Proceed step 4 & 5 i

stment.

WAVEFORM OR OTHERS

nal

sig

UR BAR"

data V09 , press R/C to operate

gn, inc

th NG s

e repeat step 2.

WAVE

mode

manual

FORM OR REMARK

Focusing Poin of ce monoscope pattern)

21S-FX10L

en).

rease data some

dedgeof

ter

t(middle

H-VCO, VIF-VCO & S-TRAP fo ADJUSTMENT

ADJUSTMENT POINT

1 H-VCO ADJ

(I2C BUS CONTROL)

(AUTO & MANUAL ADJ)

(Manual Adj)

(1) In No signal (RASTER) condition. (2) Go to service mode, choose service data (3) Connect oscilloscope to IC801 pin13 (H-OUT)

become 15.735 ± 0.2KHz.

(Auto Adj)

(1) In No signal (RASTER) condition. (2) Go to service mode. (3) Choose service data V25,bypressingR/C

at screen.

(4) If appear "NG" pls repeat step 3.

2 VIF-VCO ADJ

(I2C BUS CONTROL)

(AUTO & MANUAL ADJ)

(Manual Adj)

(1) In No signal (RASTER) condition. (2) Go to service mode, choose service data V14 (3) Connect oscilloscope to IC801 pin7 (AFT)

2.5 ± 0.5 V DC (Checking spec : 2.50 ± 1.5 V)

(Auto Adj)

(1) In No signal (RASTER) condition. (2) Go to service mode, choose service data V14. (3) Press the R/C "AUTO PIF-VCO" (4) If appear "NG" pls repeat step 3.

S-TRAP fo ADJ

(Manual ADJ

)

(I2C BUS CONTROL) (1) In No signal (RASTER) condition.

(AUTO & MANUAL ADJ)

(2) Go to service mode, choose service data V26. (3) Connect oscilloscope to TP 801 or IC801 pin 30

ADJUSTMENT CONDITION / PROCEDURE

V25.

,adjV25 until freq

"AUTO H-VCO" key, OSD will appear "OK"

, adj V14 until voltage become

key, OSD will appear "OK" at screen.

, adj V26 until voltage become Min (below 5 V).

WAVEFORM OR OTHERS

*NOTE: This adjustment must be done after aging at least 3 minutes.

(Auto Adj) (1) In No signal (RASTER) condition. (2) Go to service mode, choose service data

V26.

(3) Press the R/C "AUTO S-TRAP" key, OSD will appear "OK" at screen. (4) If appear "NG" pls repeat step 3.

5 – 3

21S-FX10L

HORIZONTAL ,V

DJUSTMENT POINT

V-SHIFT

(I2C BUS CONTRO

V-SIZE

(I2C BUS CONTROL)

(to be done after V-shift adj)

V-LINEARITY

(I2C BUS CONTROL)

VS CORRECTION

(I2C BUS CONTR

5 H-SHIFT

(I2C BUS CONTRO

6 H-SIZE

2C BUS CO

RTICAL,DEFLECTION LOOP ADJUSTMENT (1)

ADJUSTMENT CO

(1) Receive US4 CH LION HEAD Signal (NTSC 60 Hz)

(2) Choose the service data (3) Adjust V

Note: B line (Monoscope middle lin

to the A mark (Tubem

(1) Receive US4 CH LIO (

2) Choose the service data

)AdjustV10

V07

to align the center of the screen to the geometric center of CRT.

e) m

iddle mark),refer t

N HEAD Signal (NTSC 60 Hz

V10

bus data until the overscan become

aution 1: Pls aging TV more th

(1) Receive US4 CH LION HEAD Signal (NTSC 60 Hz). (2) Choose the servic

edata

29.

(3 )Already preset. (Adjust this unless the linearity is achieved.)

(1) Receiv

e US4 CH LION HEAD Signal (NTSC60Hz).

(2) Choose the servic

e data

V27.

(3 )Already preset. (Adjust this unless the linearity is achieved.)

(1) Receiv

NTROL)

e US4 CH LION HEAD Signal (NTSC 60 Hz

(2) Choose the service da

(3) Adjust the

(4)Ifcannotmakeitto

(1) Receive US (2) Choose the service data (

3) Adjust

V35 bus data until the overscan becomes

V08

s data t

A=B

ave a balance posi

, adjust fr

V08 bu

4CHLIONHEAD Signal (NTSC 60 Hz).

V35

NDITION / PROCEDURE

tsameornearesthigher

o the attach drawing

10 ± 2.

5%.

an 10 minutes before adjustment

tion to spec of

A=B

om the best point so that

10 ± 2.5 %.

position

(as attach

drawing).

A slightly smaller than

Figure

AVEFORM OR OTHERS

OK NG

PARABOLA

(I2C BUS CON

(1) Receive CrossHatch Pattern Signal (NTSC 60 Hz).

TROL)

(2) Choose the service data

V31

Adjust the 2nd vertical line from the right end of the crosshatch pattern so that the middle 4 blocks are straight. (3) Ma

ke sure both left / right of 2nd vertical line at optimum point

5 – 4

+ 35 hidden pages