Sharp 21XF30 Manual de usuario

SHARP CORPORATION

SERVICE MANUAL

21XF30

21XF50

MODELS

In the interests of user-safety (Required by safety regulations in some countries) the set should be re-

stored to its original condition and only parts identical to those specified should be used.

FEATURE

ËWorld Multi 21 System(21XF50)

ËNICAM/A2 (21XF50)

ËMono Bilingual (21XF30)

ËAV Stereo (21XF30)

ËFull Auto Search System

Ë100-CH Program Memory

ËCATV (Hyper Band) Ready

ËSurround System

ËEnglish & Thailand Language OSD

ËON/OFF/Reminder Timer

ËHigh Contrast Picture (Black Stretch Circuit)

ËColour Comb Filter (NTSC only)

ËBlue Back Noise Mute

ËFront AV IN/ Rear AV IN/OUT Terminal

ËHotel Mode

WARNING

The chassis in this receiver is partially hot. Use an isolation transformer between the line cord plug and power

receptacle, when servicing this chassis. To prevent electric shock, do not remove cover. No user – serviceable

parts inside. Refer servicing to qualified service personnel.

»SPECIFICATIONS ........................................... 2

»IMPORTANT SERVICE NOTES ......................2

»ADJUSTMENT PRECAUTIONS .....................3

»MEMORY MAP..............................................13

»HOTEL MODE APPLICATION ......................19

»TROUBLE SHOOTING TABLE......................20

»SOLID STATE DEVICE BASE DIAGRAM .....22

»CHASSIS LAYOUT ........................................24

»BLOCK DIAGRAM.........................................26

»WAVEFORMS ...............................................31

»DESCRIPTION OF SCHEMATIC DIAGRAM .. 31

»SCHEMATIC DIAGRAM

■MAIN UNIT ...............................................32

■CRT UNIT.................................................38

■MONO BILLINGUAL UNIT(21XF30) ........39

■NICAM/A2 UNIT(21XF50) ........................40

»PRINTED WIRING BOARD ASSEMBLIES ...42

»REPLACEMENT PARTS LIST

■ELECTRICAL PARTS...............................48

■MISCELLANEOUS PARTS ......................54

■SUPPLIED ACCESSORIES.....................54

■PACKING PARTS .....................................54

■CABINET PARTS .....................................55

»PACKING OF THE SET ...................................56

Page Page

CONTENTS

COLOURTELEVISION

Chassis No. UAF

S42H621XF30//

21XF30

21XF50

21XF30

21XF50

2-1 2-2

SPECIFICATIONS

Convergence .................................................................Self Convergence System

Focus .......................................................................Quadra-Potential Electrostatic

Sweep Deflection......................................................................................Magnetic

Intermediate Frequencies

Picture IF Carrier ..................................................................................38.9MHz

Sound IF Carrier Frequency

5.74MHz ..........................................................................................33.16MHz

5.50MHz ..........................................................................................33.40MHz

Colour Sub-Carrier Frequency............................................................ 34.47MHz

Power Input..................................................................... 110 ~ 240V AC 50/60 Hz

Power Consumption ............................................ 111W(21XF30), 112W(21XF50)

Audio Power Output Rating ........................................................ 7.5W x 2(at Max.)

Speaker

Size............................................................................................ 12 x 6 cm (2pc)

Voice Coil Impedance ............................................................. 8 ohms at 400 Hz

Aerial Input Impedance

VHF/UHF .......................................................................... 75 ohms Unbalanced

Raceiving System........................................................................... CCIR/PAL B, G

Tuner Ranges

»VHF-Channels .................................................. 48.25 MHz thru 463.25 MHz

»UHF-Channels............................................... 471.25 MHz thru 863.25 MHz

Dimensions................................................................................... Width: 621.0mm

Height: 468.0mm

Depth: 474.0mm

Weight(approx): 25 kg

Cabinet material ....................................................................................All Plastics

Specifications are subject to change without prior notice.

IMPORTANT SERVICE NOTES

Maintenance and repair of this receiver should be done by qualified

service personnel only.

SERVICE OF HIGH VOLTAGE SYSTEM AND PIC-

TURETUBE

When servicing the high voltage system, remove static charge from it by

Connecting a 10K ohm Resistor in series with an insulated wire(such as a

test probe) between picture tube dag and 2nd 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 completely.

X-RAY

This receiver is designed so that any X-Ray radiation is kept to an absolute

Minimum. Since certain malfunctions or servicing may produce potentially

hazardous radiation with prolonged exposure at close range, the followin

precautions should be observed:

1. When repairing the circuit, be sure not to increase the high voltage to more than 30.0kV

(at beam 0

A) for the set.

2. To keep the set in a normal opeartion , be sure to make it function on 27.5kV

1.5kV (at

beam 1,350

A) in the case of the set.The set has been factory - Adjusted to the above-

mentioned high voltage.

∴If there is a possibility that the high voltage fluctuates as a result of the repairs,

never forget to check for such high voltage after the work.

3. Do not substitute a picture tube with unauthorizerd types and/or brands which may

cause excess X-ray radiation.

BEFORE RETURNINGTHE RECEIVER

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 fishpapers,

cabinet backs, adjustment and compartment covers or shields, isolation resistor- ca-

pacity networks, mechanical insulators etc.

21XF30

21XF50

3-1 3-2

ADJUSTMENT PRECAUTIONS

This model’s setting are adjusted in two different ways: through the I

C bus control and in the conventional

analog manner. The adjustments via the I

C bus control include preset-only items and variable data.

1. Setting the service mode by the microprocessor.

1. Short TP1001 & TP1002 to switch to the service mode position, and the microprocessor is in input

mode.(Adjustment through the I2C bus control).(Use JWS Key to set as well).

2. Press the CH DOWN / UP key on the remote controller to get ready to select the mode one by one.

3. Press the CH DOWN / UP key on the remote controller to select the modes reversibly one by one.

4. Using theVOLUME UP/ DOWN key on the remote controller, the data can be modified.

5. Disconnect TP1001 &TP1002 to switch to the normal mode (OFF) position, and the microprocessor is

in out of the service mode.

2. Factory Presetting.

1. Short TP1001 & TP1002 to switch to the service mode position and turn on the main power switch.

Initial values are automatically preset, only when a new EEPROM is used (Judge with the first 4 bytes).

2. The initial data are preset as listed in page E-9, E-10 & E-11.

3. Make sure the data need modify or not (Initial data).

Note: Once the chassis has been assembly together and ready to be POWER ON for the FIRST TIME,

make sure to shortTP1001 &TP1002 to switch to the service mode position first and then turn on

the main power switch (See 2-(1) above).

Precaution: If haven’t done this initiation, it may possibly generate excessive Beam current.

3. For reference please check with memory map

(UAF Series type RH-iX3411CEN5 Attachment)

4. Trouble indications

If the set is interrupted by IIC bus line error, the following indicators work to identify a spot in trouble.

LED (RED) flashing: Flashing time Part's Ref.No. Remarks

2 IC1003 EEP ROM

3 IC801 TV PROCESSOR

4 IC401 AV SWITCH

5 IC305 SOUND PROCESSOR

6 IC2300 NICAM/A2 DECODER

8 TU201 TUNER

SERVICE MODE

(1) In the Service Mode, Key is used to select the mode in the following order.

AGC &

GEOMETRIC

MODE

↓

AGC Take Over Point (AGC)

Vertical Slope (V-LIN)

Vertical Amplitude(V-AMP)

Vertical Shift (V-CENT)

Horizontal shift (H-CENT)

East-West width (H-SIZE)

Horizontal Parallelogram (EW//)

East-west Parabola/Width (PARA)

East-west Upper Corner Parabola (COR(U))

East-west Lower Corner Parabola (COR(L))

East-west Trapezium (TRAPE)

Horizontal Bow (HB)

S-Correction (S-COR)

WHITE POINT

ADJ.

MODE

↓

White point Red Standard white temp.(DRI-RS)

White point Green Standard white temp. (DRI-GS)

White point Blue Standard white temp (DRI-BS)

White point Red Cold white temp. (DRI-RC)

White point Green Cold white temp. (DRI-GC)

White point Blue Cold white temp. (DRI-BC)

White point Red Warm white temp. (DRI-RW)

White point Green Warm white temp. (DRI-GW)

White point Blue Warm white temp. (DRI-BW)

SUB

ADJ.

MODE

↓

Max Volume (SUB-VOL)

Sub Contrast (SUB-CON)

Sub Colour (SUB-COL)

Sub Brightness (SUB-BRI)

Sub Tint (SUB-TINT)

Sub Sharpness (SUB-SHP)

Max Hotel Volume (HTL-VOL)

Hotel Program number (HTL-PRG)

Blue Back Contorast (BB-CON)

OSD RGB Reference (RGB)

Black Level off-set R (CUT-R)

Black Level off-set G (CUT-G)

Cathode Drive Level (CDL)

FORWARD : CH DOWN KEY

REVERSE : CH UP KEY

* ( ) means OSD display.

FORWARD : CH DOWN KEY

REVERSE : CH UP KEY

* ( ) means OSD display.

AGC &

GEOMETRIC

MODE

WHITE POINT

ADJ.

MODE

SUB

ADJ.

MODE

Y-DELAY

ADJ.

MODE

MISC.

OPTION

MODE

OPTION

MODE

OFFSET

ADJ.

MODE

21XF30

21XF50

4-1 4-2

Bass Mix for AN7396K (BM-ON)

Bass Mix Effect for AN7396K (BM-EFF)

AGC for AN7396 or AN5891 (AGC-ON)

AGC Adjust for AN7396K or AN5891

(AGC-ADJ)

NICAM AGC (AGC-N)

NICAM AGC Gain adjust (GAIN-N)

FM Output Level (FM-LV)

IGR Output Level (IGR-LV)

NICAM Output Level (B/G) (BG-NLY)

NICAM Output Level (I) (I-NLV)

NICAM Output Level (D/K) (DK-NLV)

NICAM lower error limit (LOW-ERR)

NICAM upper error limit (UP-ERR)

IGR Stereo R ch gain adjust

(tda9873) (IGR-STR)

Vertical Scan Disable (VSD)

Black Stretch (BKS)

AutomaticVolume Leveling (AVL)

Fast Filter IF-PLL (FFI)

Enable Vertical Guard

(RGB blanking) (EVG)

EHT Tracking mode [HCO] (EHT)

Overscan Switch off (oso)

Auto Colour Limit (ACL)

Forced Colour ON (FCO)

COLOUR OFFSET (PAL) (COL-OP)

COLOUR OFFSET (SECAM) (COL-OS)

COLOUR OFFSET (NTSC358) (COL-O3)

COLOUR OFFSET (NTSC443) (COL-O4)

SHARPNESS OFFSET(PAL) (SHP-OP)

SHARPNESS OFFSET(SECAM) (SHP-OS)

SHARPNESS OFFSET(NTSC358) (SHP-O3)

SHARPNESS OFFSET(NTSC443) (SHP-O4)

Y-DELAY

ADJ.

MODE

↓

Y-Delay time for PAL (TV)

(DL-PT)

Y-Delay time for SECAM (TV)

(DL-ST)

Y-Delay time for N358 (TV)

(DL-3T)

Y-Delay time for N443 (TV)

(DL-4T)

Y-Delay time for B/W (TV)

(DL-TV)

Y-Delay time for PAL (AV)

(DL-PA)

Y-Delay time for SECAM (AV)

(DL-SA)

Y-Delay time for N358 (AV)

(DL-3A)

Y-Delay time for N443 (AV)

(DL-4A)

Y-Delay time for B/W (AV)

(DL-AV)

OFFSET

ADJ.

MODE

↓

Sound system M (S-M)

Sound system DK (S-DK)

Sound system I (S-I)

Sound system BG (S-BG)

Playback SECAM (P-SECAM)

FE (RF) NTSC 3.58 (F-N358)

FE (RF) NTSC 4.43 (F-N443)

FE (RF) SECAM (F-SECAM)

Video Mute at Ident loss (VMI)

Video Mute at program

/source Change (VMC)

Hotel mode (HTL)

Reduced FM demodulator Gain

(for BTSC sig) (BTSC)

Number of external AV sources (AV)

FM Window Selection (FMWS)

Sound Mute bit 0 (SM0)

Sound Mute bit 1 (SM1)

Thai language (THA)

Arabic language (ARA)

Malay language (MAL)

Chinese language (CHI)

French language (FRE)

Russian language (RUS)

ForcedV-SYNC slicing level (FSL)

Sync of OSD (HP2)

IF AGC speed bit0 (AGC0)

IF AGC speed bit1 (AGC1)

Phi 1 time constant for FE(RF) (FOA-FE)

Phi 2 time constant for FE(RF) (FOB-FE)

Phi 1 time constant for AV (FOA-AV)

Phi 2 time constant for AV (FOB-AV)

Teletext (TXT)

Teletext Western or Eastern characters (TXT-WE)

Teletext pan-European language (TXT-EURO)

IF frequency selection (IF-38.0)

Charge pump (CP)

AN5890 Sound processor present (AN5890)

AN5891 sound processor present (AN5891)

AN7396 sound processor present (AN7396)

NICAM decoding enabled (NICAM)

IGR decoding enabled (IGR)

GAME mode enabled (GAME)

BIL enabled (BIL)

LED Blink Speed When On-Timer is active (LED-F)

PWM Volume Table for mono (MSA)

Output Vertical Guard (NDF)

OSD "IGR" or "A2" display (A2)

MISC.

OPTION

MODE

↓

21XF30

21XF50

5-1 5-2

USER DATA

CONTRAST MAX (64/64)

COLOUR CENT (32/64)

BRIGHTNESS CENT (32/64)

TINT CENT (32/64)

SHARPNESS CENT (32/64)

WHITETEMP CENT (32/64)

TREBLE CENT (32/64)

BASS CENT (32/64)

SURROUND OFF

BALANCE CENT (32/64)

S-VOLUME MIN (1/64)

BLUE BACK OFF

C SYSTEM AUTO

S SYSTEM *1

USER DATA IN SERVICE MODE

* While SERVICE mode ON, EEPROM DATA will switch to the service data.

Also, once SERVICE mode OFF, EEPROM will switch back to previous USER DATA.

* In the service mode, the user data establish as below,

* Direct Key-in

MODE KEY-IN KEY

AGC FUNCTION

SUB-BRI BRIGHTNESS UP

DRI-GS TEXT

DRI-BS PICTURE

CUT-R SKIP

CUT-G F2

V-LIN CONTRAST DOWN

V-CENT BRIGHTNESS DOWN

V-AMP COLOUR DOWN

H-CENT TINT DOWN

H-SIZE BALANCE RIGHT

PARA TREBLE UP

TRAPE BASS UP

EW// SHARPNESS DOWN

SUB-COL COLOUR UP

SUB-TINT TINT UP

*1: For each CH,data is same as before

switch to Service Mode

EEPROM ITEMS OSD DATA LENGTH

INITIAL DATA

FIX/ADJ REMARK

AGCTake Over Point AGC 0 ~ 63 14 (20) ADJ

Vertical Slope V-LIN 0 ~ 63 32 ADJ

Vertical Amplitude V-AMP 0 ~ 63 32 ADJ

Vertical Shift V-CENT 0 ~ 63 32 (15) ADJ

Horizontal shift H-CENT 0 ~ 63 32 ADJ

East-West width H-SIZE 0 ~ 63 32 FIX

Horizontal Parallelogram EW / / 0 ~ 63 32 FIX

East-west Parabola/Width PARA 0 ~ 63 32 FIX

East-west Upper Corner Parabola COR (U) 0 ~ 63 32 FIX

East-west Lower Corner Parabola COR (L) 0 ~ 63 32 FIX

East-westTrapezium TRAPE 0 ~ 63 32 FIX

Horizontal Bow HB 0 ~ 63 32 FIX

S-Correction S-COR 0 ~ 63 0(24) FIX

White point Red Standard white temp. DRI-RS 0 ~ 63 32 FIX

White point Green Standard white temp. DRI-GS 0 ~ 63 32 ADJ

White point Blue Standard white temp DRI-BS 0 ~ 63 32 ADJ

White point Red Cold white temp. DRI-RC 0 ~ 63 25 FIX

White point Green Cold white temp. DRI-GC 0 ~ 63 32 ADJ (DRI-GS)-7 DATA

White point Blue Cold white temp. DRI-BC 0 ~ 63 32 ADJ (DRI-BS) DATA

White point Red Warm white temp. DRI-RW 0 ~ 63 32 FIX

White point Green Warm white temp. DRI-GW 0 ~ 63 32 ADJ (DRI-GS)-7 DATA

White point Blue Warm white temp. DRI-BW 0 ~ 63 32 ADJ (DRI-BS)-7 DATA

Max Volume SUB-VOL 0 ~ 60 60 FIX

Sub Contrast SUB-CON 0 ~ 63 63 FIX

Sub Colour SUB-COL 0 ~ 63 32 (20) ADJ *2

Sub Brightness SUB-BRI 0 ~ 63 32 (20) ADJ

Sub Tint SUB-TINT 0 ~ 63 32 (30) ADJ

Sub Sharpness SUB-SHP 0 ~ 63 32 (25) FIX

Max Hotel Volume HTL-VOL 0 ~ 60 30 FIX

Hotel Program number HTL-PRG

0 ~ 99 OR >99 FOR NONE

255 FIX

Blue Back Contorast BB-CON 0 ~ 15 10 FIX

OSD RGB Reference RGB 0 ~ 15 15(8) FIX

Black Level off-set R CUT-R 0 ~ 63 32 ADJ

Black Level off-set G CUT-G 0 ~ 63 32 ADJ

Cathode Drive Level CDL 0 ~ 15 0 (9) FIX

Y-Delay time for PAL (TV) DL-PT 0 ~ 15 12 FIX

Y-Delay time for SECAM (TV) DL-ST 0 ~ 15 15 FIX

Y-Delay time for N358 (TV) DL-3T 0 ~ 15 12(5) FIX

Y-Delay time for N443 (TV) DL-4T 0 ~ 15 12(5) FIX

Y-Delay time for B/W (TV) DL-TV 0 ~ 15 12 FIX

Y-Delay time for PAL (AV) DL-PA 0 ~ 15 12 FIX

Y-Delay time for SECAM (AV) DL-SA 0 ~ 15 15 FIX

Y-Delay time for N358 (AV) DL-3A 0 ~ 15 12(5) FIX

Y-Delay time for N443 (AV) DL-4A 0 ~ 15 12(5) FIX

Y-Delay time for B/W (AV) DL-AV 0 ~ 15 12 FIX

After short TP1001 & TP1002, and turn on the MAIN POWER switch, read data from EEPROM address

00H ~ 03H, and compare to the list below, if different, initialize the EEPROM.

Address : Data Address : Data

00H : 55H 02H : 53H

01H : 4IH 03H : 54H

21XF30

21XF50

6-1 6-2

EEPROM ITEMS OSD DATA LENGTH

INITIAL DATA

FIX/ADJ REMARK

COLOUR OFFSET (PAL) COL-OP 0 ~ 15 8 FIX

COLOUR OFFSET (SECAM) COL-OS 0 ~ 15 8 FIX

COLOUR OFFSET (NTSC358) COL-O3 0 ~ 15 4 FIX

COLOUR OFFSET (NTSC443) COL-O4 0 ~ 15 4 FIX

SHARPNESS OFFSET(PAL) SHP-OP 0 ~ 15 8 FIX

SHARPNESS OFFSET(SECAM) SHP-OS 0 ~ 15 4 FIX

SHARPNESS OFFSET(NTSC358) SHP-O3 0 ~ 15 12 FIX

SHARPNESS OFFSET(NTSC443) SHP-O4 0 ~ 15 8 FIX

Bass Mix for AN7396K BM-ON

0(DISABLE)/1(ENABLE)

0 FIX

Bass Mix Effect for AN7396K BM-EFF 0 ~ 3 2 FIX

AGC for AN7396 or AN5891 AGC-ON

0(DISABLE)/1(ENABLE)

1 FIX

AGC Adjust for AN7396K or AN5891 AGC-ADJ 0 ~ 3 3 FIX

NICAM AGC AGC-N

0(DISABLE)/1(ENABLE)

0 FIX

NICAM AGC Gain adjust GAIN-N 0 ~ 31 0 FIX

FM Output Level FM-LV 0 ~ 30 15 (22) FIX

IGR Output Level IGR-LV 0 ~ 30 16 (23) FIX

NICAM Output Level (B/G) BG-NLV 0 ~ 30 13 (26) FIX

NICAM Output Level (I) I-NLV 0 ~ 30 18 (25) FIX

NICAM Output Level (D/K) DK-NLV 0 ~ 30 13 (20) FIX

NICAM lower error limit LOW-ERR 0 ~ 255 35 FIX

NICAM upper error limit UP-ERR 0 ~ 255 70 FIX

IGR Stereo R ch gain adjust(tda9873) IGR-STR 0 ~ 13 6 FIX

Vertical Scan Disable VSD

0 or 1 (not Stored)

0FIX

Black Stretch BKS

0(DISABLE)/1(ENABLE)

1FIX

Automatic Volume Leveling AVL

0(DISABLE)/1(ENABLE)

1 FIX

Fast Filter IF-PLL FFI

0(DISABLE)/1(ENABLE)

0FIX

EnableVertical Guard (RGB blanking) EVG

0(DISABLE)/1(ENABLE)

1FIX

EHT Tracking mode [HCO] EHT

0(DISABLE)/1(ENABLE)

1 FIX

Overscan Switch Off OSO

0(DISABLE)/1(ENABLE)

0FIX

Auto Colour Limit ACL

0(DISABLE)/1(ENABLE)

0 (1) FIX

Forced Colour ON FCO

0(DISABLE)/1(ENABLE)

0 FIX

Sound system M S-M

0(DISABLE)/1(ENABLE)

*1 FIX

Sound system DK S-DK

0(DISABLE)/1(ENABLE)

*1 FIX

Sound system I S-I

0(DISABLE)/1(ENABLE)

*1 FIX

Sound system BG S-BG

0(DISABLE)/1(ENABLE)

*1 FIX

Playback SECAM P-SECAM

0(DISABLE)/1(ENABLE)

*1 FIX

FE (RF) NTSC 3.58 F-N358

0(DISABLE)/1(ENABLE)

*1 FIX

FE (RF) NTSC 4.43 F-N443

0(DISABLE)/1(ENABLE)

*1 FIX

FE (RF) SECAM F-SECAM

0(DISABLE)/1(ENABLE)

*1 FIX

Video Mute at Ident loss VMI

0(DISABLE)/1(ENABLE)

1FIX

Video Mute at program/source Change VMC

0(DISABLE)/1(ENABLE)

1FIX

Hotel mode HTL

0(DISABLE)/1(ENABLE)

0FIX

Reduced FM demodulator Gain (for BTSC sig) BTSC

0(DISABLE)/1(ENABLE)

0FIX

Number of external AV sources AV

0 FOR 1 AV / 1 FOR 2 AV

1FIX

FM Window Selection FMWS

0(DISABLE)/1(ENABLE)

0FIX

Sound Mute bit 0 SM0

0(DISABLE)/1(ENABLE)

1FIX

Sound Mute bit 1 SM1

0(DISABLE)/1(ENABLE)

0FIX

Thai language THA

0(DISABLE)/1(ENABLE)

0 (1) FIX

Arabic language ARA

0(DISABLE)/1(ENABLE)

1 (0) FIX

Malay language MAL

0(DISABLE)/1(ENABLE)

1 (0) FIX

Chinese language CHI

0(DISABLE)/1(ENABLE)

1 (0) FIX

French language FRE

0(DISABLE)/1(ENABLE)

1 (0) FIX

Russian language RUS

0(DISABLE)/1(ENABLE)

1 (0) FIX

NOTE :

Please set the EEPROM initial data according to the value in parenthesis () before adjustment.

Fixed data, please do not change without specific instruction.

*1: Please refer the following table.

*2: After Adjust SUB-COL Level, Add 6 Steps into the value of SUB-COL.

[New SUB-COL = SUB-COL(After Adjust SUB-COL Level)+6]

EEPROM ITEMS OSD DATA LENGTH INITIAL DATA

21XF50 21XF30

Sound system M S-M 0(DISABLE)/1(ENABLE) 0(1) 0

Sound system DK S-DK 0(DISABLE)/1(ENABLE) 1 1(0)

Sound system I S-I 0(DISABLE)/1(ENABLE) 1 1(0)

Sound system BG S-BG 0(DISABLE)/1(ENABLE) 11

Playback SECAM P-SECAM 0(DISABLE)/1(ENABLE) 1 1(0)

FE (RF) NTSC 3.58 F-N358 0(DISABLE)/1(ENABLE) 0(1) 0

FE (RF) NTSC 4.43 F-N443 0(DISABLE)/1(ENABLE) 1 1(0)

FE (RF) SECAM F-SECAM 0(DISABLE)/1(ENABLE) 1 1(0)

NICAM decoding enabled NICAM 0(DISABLE)/1(ENABLE) 0(1) 0

IGR decoding enabled IGR 0(DISABLE)/1(ENABLE) 0(1) 0

BIL enabled BIL 0(DISABLE)/1(ENABLE) 0 0(1)

OSD "IGR" or "A2" display A2 0(display IGR)/1(display A2) 0(1) 0

EEPROM ITEMS OSD DATA LENGTH

INITIAL DATA

FIX/ADJ REMARK

ForcedV-SYNC slicing level FSL

0(DISABLE)/1(ENABLE)

0 FIX

Sync of OSD HP2

0 FOR Ph1 / 1 FOR Ph2

0 FIX

IF AGC speed bit0 AGC0

0(DISABLE)/1(ENABLE)

1 FIX

IF AGC speed bit1 AGC1

0(DISABLE)/1(ENABLE)

0 FIX

Phi 1 time constant for FE(RF) FOA-FE

0(DISABLE)/1(ENABLE)

0 FIX

Phi 2 time constant for FE(RF) FOB-FE

0(DISABLE)/1(ENABLE)

0 FIX

Phi 1 time constant for AV FOA-AV

0(DISABLE)/1(ENABLE)

1 FIX

Phi 2 time constant for AV FOB-AV

0(DISABLE)/1(ENABLE)

1 FIX

Teletext TXT

0(DISABLE)/1(ENABLE)

0 FIX

Teletext Western or Eastern characters TXT-WE

0(DISABLE)/1(ENABLE)

0 FIX

0 (teletext pan-

Teletext pan-European language TXT-EURO

european language) /

0 FIX

depends on delivery

(Arabic/Russian))

IF frequency selection IF-38.0

0 (IF FREQUENCY 38.9) /

0 FIX

1 (IF FREQUENCY 38.0)

0 (FAST TUNING) /

Charge pump CP

1 (MODERATE

0(1) FIX

SPEED TUNING)

AN5890 Sound processor present AN5890

0(DISABLE)/1(ENABLE)

1 (0) FIX

AN5891 sound processor present AN5891

0(DISABLE)/1(ENABLE)

0 (1) FIX

AN7396 sound processor present AN7396

0(DISABLE)/1(ENABLE)

0 FIX

NICAM decoding enabled NICAM

0(DISABLE)/1(ENABLE)

*1 FIX

IGR decoding enabled IGR

0(DISABLE)/1(ENABLE)

*1 FIX

GAME mode enabled GAME

0(DISABLE)/1(ENABLE)

0 FIX

BIL enabled BIL

0(DISABLE)/1(ENABLE)

*1 FIX

LED blink Speed when On-Timer is active LED-F

0(62.5Hz)/1(1Hz)

0 FIX

PWM volume table for MONO MSA

0(original table)/1(new table)

0 FIX

Output Vertical Guard NDF

0(ignore)/1(accept)

0(1) FIX

OSD "IGR" or "A2" displayA2

0(display IGR)/1(display A2)

*1 FIX

21XF30

21XF50

7-1 7-2

MCL2

CH-NO Fv (MHz) SOUND SYS

0 590.25 B/G

1 46.25 B/G

2 64.25 B/G

3 86.25 B/G

4 95.25 B/G

5 138.25 B/G

6 175.25 B/G

7 182.25 B/G

8 189.25 B/G

9 196.25 B/G

10 209.25 B/G

11 216.25 B/G

28 527.25 B/G

37 590.25 B/G

41 48.25 B/G

42 62.25 B/G

43 77.25 D/K

44 175.25 B/G

45 183.25 D/K

46 191.25 D/K

47 210.25 B/G

48 224.25 B/G

49 487.25 I

50 503.25 B/G

51 575.25 B/G

52 599.25 B/G

53 621.25 M

54 639.25 D/K

55 735.25 I

56 767.25 B/G

57 815.25 B/G

58 855.25 I

59 91.25 M

60 183.25 M

MCL1

CH-NO Fv (MHz) SOUND SYS

1 48.25 B/G

2 62.25 B/G

3 77.25 D/K

4 175.25 B/G

5 182.25 B/G

6 183.25 D/K

7 191.25 D/K

8 196.25 B/G

9 199.25 M

10 210.25 B/G

11 224.25 B/G

12 471.25 B/G

13 487.25 I

14 503.25 B/G

15 575.25 B/G

16 583.25 B/G

17 599.25 B/G

18 621.25 M

19 639.25 D/K

20 703.25 B/G

21 735.25 I

22 767.25 B/G

23 815.25 B/G

24 855.25 I

25 855.25 B/G

26 55.25 M

27 83.25 M

28 183.25 M

29 193.25 M

30 217.25 M

31 471.25 M

32 477.25 M

33 693.25 M

34 885.25 M

35 112.25 B/G

36 168.25 B/G

38 294.25 B/G

39 463.25 B/G

41 647.25 B/G

42 663.25 B/G

43 679.25 B/G

44 174.95 B/G

45 175.55 B/G

MCL2

CH-NO Fv (MHz) SOUND SYS

61 193.25 M

62 217.25 M

63 471.25 M

64 693.25 M

65 112.25 B/G

66 168.25 B/G

67 294.25 B/G

68 463.25 B/G

69 174.95 B/G

70 175.55 B/G

INITIAL SETTING

In service mode, after execute select POS 1, store the following tuning data in EEPROM.

SHIPPING SETTING & CHECKING

THE FOLLOWING DEFAULT DATA HAS BEEN FACTORY-SET FOR THE EEPROM.

ITEMS DATA SETTING

LAST PROGRAM/CHANNEL 1

FLASHBACK PROGRAM/CH 1

DIGIT 2

C-SYSTEM AUTO

S-SYSTEM B/G

SKIP OFF

AFC ON

VOLUME 1

CONTRAST 60 (MAX)

COLOUR 0 (CENTER)

BRIGHTNESS 0 (CENTER)

TINT 0 (CENTER)

SHARPNESS 0 (CENTER)

WHITE TEMP STANDARD

TREBLE 0 (CENTER)

BASS 0 (CENTER)

SURROUND OFF

SURROUND LEVEL 0 (CENTER)

BALANCE 0 (CENTER)

REMINDER TIMER

IN-ACTIVE, “—:—”

ON TIMER

IN-ACTIVE, “—:—”

OFF TIMER

IN-ACTIVE, “—:—”

R/C POWER POWER-ON

LANGUAGE THAI

BLUE BACK MUTE ON

HOTEL MODE OFF

0 CHANNEL SKIP ON*

LAST TV/AV TV

FACTORY SETTING BY MODEL

(Reference: Geomagnetism Adjustment)

MODEL MAGNEIC FIELD(V, H) nT BACKGROUND LANG. S-SYS

21XF30/50 10,000 40,000 12300K THAI B/G

* NOTE FOR OSD TYPE ENGLISH/THAILAND

21XF30

21XF50

8-1 8-2

PIF ADJUSTMENT

No. Adjusting point Adjusting procedure/conditions Waveform and others

Tuner IFT

( PRESET )

11. Get the tuner ready to receive the CH. E - 9

signal,but with no signal input.

Adjust the PLL data.

2. Connect the sweep generator's output cable to

the tuner antenna. ( RF SWEEP )

3. Adjust the sweep generator's to 80dBµV.

4. Connect the response lead ( use LOW IMPED-

ANCE probe with wave detector ; see Fig.1 ) to

the tuner's IF output terminal. ( This terminal

must have the probe alone connected ).

5. Set the RF AGC to 0 - 6V with no saturation with

the waveform.

6. Adjust the tuner IF coil to obtain the waveform as

shown in Fig.2.

Note: Be sure to keep the tuner cover in posi-

tion during this adjustment.

RF-AGC

TAKE OVER

POINT AD-

JUSTMENT

(I2C BUS

CONTROL)

1. Receive "PAL COLOUR BAR" signal.

»Signal Strength: 56 ±1 dBµV (75 ohm open)

2. Connect the oscilloscope to TP201 (Tuner’s AGC

Terminal) as shown in Fig. 3.

3. Call "AGC" mode in service mode. Adjust the

"AGC" bus data to obtain the Tuner output pin drop

0.1V below maximum voltage.

4. Change the antenna input signal to 63~67dBµV,

and make sure there is no noise.

5. Turn up the input signal to 90~95 dBµV to be sure

that there is no cross modulation beat.

Fig. 3

Fig.1

Fig.2

Note: For the 50 ohm signal

strength gauge, when not us-

ing 50/75 impedance adapter,

signal strength is

54±1dBµV(75 ohm open), in-

stead of 56±1dBµV (75 ohm

open).

Precaution:The loss of using

impedance adapter.

E-9 CH

P C

10k

100k

1n60

75ohm

IF OUT

-1.5+/-0.8dB

1000p

Oscilloscope

»Bias box: About 4.5 V

Oscilloscope

0.1V

TV Set

Bias box

TP201+

—

SIF (NICAM/A2) ADJUSTMENT

No. Adjusting point Adjusting procedure/conditions Waveform and others

VCO COIL

T2300

11. Recieve "PAL colour bar" signal.(E-69)

(Set AFT ON 855.25MHz frequency).

2. Connect DC Voltmeter to TP202 (MAIN BOARD

TEST POINT).

3. Check and turn T2300 counter-clockwise (Left)

to 0V and then turn it clockwise (Right) untilTP202

become 5V.

Afterthat, turnT2300counter-clockwise(Left) until

TP202 became 2.5 ±0.1Vdc.

*UNIT BOARD ADJUSTMENT

Vcc 5V ±0.1V

IF Input Frequency 38.9MHz ±0.1V

Adjust T2300 unit TP2300(NICAM/A2 BOARD

TEST POINT) become 2.5 ±1.0V

Check after assembly NICAM/A2 BOARD

Test point:TP202 (IN MAIN BOARD).

Preset selected reception frequency (AFT OFF)

Check Voltage 2.5V ±1.0Vdc.

Precaution: The Vcc, fo and other factors are

considered in the unit board of the

1.0V tolerance which differ from the

adjustment accuracy.

21XF30

21XF50

9-1 9-2

PURITY ADJUSTMENT

No. Adjusting point Adjusting procedure/conditions Waveform and others

PURITY ADJ. 1. Receive the GREEN-ONLY signal. Adjust the

beam current to ~700 µA.

2. Degauss the CRT enough with the degausing coil.

Note: Follow the Job Instruction Sheet to ad-

just the magnetic field.

Vertical Bv: +0.010 mT (0.10 gauss)

Horizontal Bh: +0.040 mT (0.40 gauss)

(Reference: page E-13)

3. Maintain the purity magnet at the zero magnetic

field and keep the static convergence roughly

adjusted.

4. Observe the points a, b as shown in Fig. 4-1

through the microscope.Adjust the landing to the

A rank requirements.

5. Orient the raster rotation to 0 eastward.

6. Tighten up the deflection coil screws.

»Tightening torque: 108 ±20 N (11 ±2 kgf)

7. Make sure the CRT corners landing meet the A

rank requirements.If not, stick the magnet sheet

to correct it.

Note: This adjustment must be done after

warming up the unit for 30 minutes or

longer with a beam current over 700

Note: Set the service mode by TP1001 &

TP1002 (short) then press factory proc-

ess R/C RGB key to change to RGB

mono colour mode.

* For the following colours press R/C RGB key to

change.

Fig. 4-1

Fig. 4-2

Fig. 4-3

* Press R/C RGB key for 1 sec-

ond in NORMAL MODE, the

colour will change to RGB

mono colour mode.

Text Key“ R.G.Cy “ Key can be

directly use to change to other

colours screen.

Signal-colour

screen cleared

GREEN

ONLY BLUE

ONLY RED

ONLY

30mm 30mm

A = B

Rank "A"

(on the right of the CRT)

Rank "A"

(on the left of the CRT)

CONVERGENCE ADJUSTMENT

No. Adjusting point Adjusting procedure/conditions Waveform and others

CONVERGENC

ADJ.

(To be done

after the purity

adjustment.

1. Receive the "Crosshatch Pattern" signal.

2. Using the remote controller, call NORMAL mode.

Static convergence

1. Turn the 4-pole magnet to a proper opening an-

gle in order to superpose the blue and red col-

ours.

2. Turn the 6-pole magnet to a proper opening an-

gle in order to superpose the green colour over

the blue and red colours.

Dynamic convergence

1. Adjust the convergence on the fringes of the

screen in the following steps.

a) Fig. 5-1:Drive the wedge at point "a" and swing

the deflection coil upward.

b) Fig.5-2: Drive the wedge at points "b" and "c"

and swing the deflection coil downward.

c) Fig.5-3: Drive the "c" wedge deeper and swing

the deflection coil rightward.

d)Fig. 5-4: Drive the "b" wedge deeper and

swing the deflection coil leftward.

2. Fix all the wedges on the CRT and apply glass

tape over them.

3. Apply lacquer to the deflection yoke lock screw,

magnet unit (purity, 4-pole, 6-pole magnets) and

magnet unit lock screw.

Finally received the Red-only and Blue-only sig-

nals to make sure there is no other colours on the

screen.

Fig. 5-1

Fig. 5-2

Fig. 5-3

Fig. 5-4

Fig. 5-5

Fig. 5-6

RGB

BGR

RGB

BGR

Lacquer

Wedge "a"

Wedge

"b" Wedge

"c"

About

100Deg

About

100Deg

4-pole magnet

6-pole magnet

CRT neck

20mm

Lacquer

Purity magnet

21XF30

21XF50

10-1 10-2

CUT-OFF, BACKGROUND AND SUB-CONTRAST ADJUSTMENT

No. Adjusting point Adjusting procedure/conditions Waveform and others

CRT CUTOFF

ADJUSTMENT 1. Switch TV toVIDEO mode,BLUE BACK OFF, without VIDEO

signal.

2. Press R/C to set Picture Normal condition.

3. First off the screen by adjust screen variable resistor.

*4.Next, check AKB circuit function by slowly increase screen

variable resistor until colour raster suddenly On and Off (AKB

start function).

5 Then continue adjust until retrace line appear.

6.Finally, slowly decrease the screen variable resistor until screen

retrace line (Not Raster) Cut Off.

*NOTE: Must comfirm the AKB function in set before continue

the next adjustment.

REMARK:

1). Before CRT Cutoff adjustment, SUB-BRIGHT, DRI-RS/RC/

RW, DRI-GS/GC/GW, DRI-BS/BC/BW, CUT-R and CUT-G

must be in initial data.

2).CRT Cutoff adjustment must be done inside a dark room.

SUB-BRIGHT-

NESS ADJUST-

MENT (I2C BUS

CONTROL)

1. Call " SUB-BRI" in service mode. (Receive Crosshatch pat-

tern with 5 black level windows)

2. Adjust the " SUB BRIGHT " bus data in order that the line 1

and 2 have the same darkness wherelse line 3 is one step

(data) brighter than line 2.

Finally data minus 1 to make line 1,2 and 3 are in same level

darkness.

Line 3 is one step (data) brighter than line 2.

Fig. 6

Fig. 7

* Alternative Procedure :

(1) Step (1),(2),(3) and (4) are same as

beside procedure.

(2) Then continue adjust until retrace line

appear and make sure the colour

appear wheather red, green or blue.

(3) Connect the oscilloscope to related

test points as below which is based

on colour appear at (2).

(4) Then adjust SCREEN VR until the tip

of signal reach 3Vdc±0.1Vdc.

Colour Appear Test Point

RED

GREEN

BLUE

TP 851

TP 852

TP 853

Fig. 8

20mS

3.0 0.1 Vdc

1 2 3 4 5

HORIZONTAL ANDVERTICAL DEFLECTION LOOP ADJUSTMENT

No. Adjusting point Adjusting procedure/conditions Waveform and others

V-LINEARITY (I2C

BUS CONTROL)

V-CENTER

(I2C BUS CON-

TROL)

V - AMP (I2C BUS

CONTROL)

H-CENTER (I2C

BUS CONTROL)

S-CORRECTION

(I2C BUS CON-

TROL)

1. Receive Monoscope Pattern Signal.

2. Call the "V-LIN" mode.

3. Increase or decrease "V-LIN" byVolume key till the horizontal

line in the center of monoscope is just at the position where

the blanking starts.

1. Call the "V-CENT" mode.

2. Increase or decrease "V-CENT" byVolume key till the picture

is centered.

1. Call the "V-AMP" mode.

2. Increase or decrease "V - AMP" by Volume key to set overscan

of 8.5% typical.

Adjustment Spec 8.5% range +1% -1%.

1. Call the "H-CENT" mode.

2. Increase or decrease "H-CENT" by Volume key to center the

picture horizontal.

1. 24 (FIX DATA)

Maximum beam

check

1. Receive the "Monoscope Pattern" signal.

2. Press R/C to set Picture NORMAL condition.

3. Connect the DC miliammeter between TP603 (+) andTP602

(–).

(Full Scale: 3 mA Range)

4. Beam current must be within 1,350 ±100 µA.

WHITE BALANCE

SERVICE MODE

ADJ. (I2C BUS

CONTROL)

1. Receive the "WHITE" pattern with BURST signal.

2. Press R/C to set Picture NORMAL condition.

3. Connect the DC miliammeter between TP602 (-) and TP603

(+).

4. Check Beam current should be around 1,350 µA.

5. Set it to service mode and adjust the " DRI-GS" (White Point-

G), "DRI-BS" (White Point-B) data to have a colour tempera-

ture of 12,300°K (white). * Note .

6. Receive "WHITE" pattern, with BURST signal, and set Bright-

nessY by generator, to **10cd/m

Minolta CA-100) by reduc-

ing LuminateY signal.

7. Adjust "CUT-R" & "CUT-G" to get 12,300°K . Then go back

normal mode (High Bright)** to check colour temperature. If

out of range, back to 1.

Note: This adjustment must be done after warming up

the unit for 30 minutes or longer with a beam cur-

rent over 700

A).

* Adjust DRI-GC/GW, DRI-BC/BW as following data, after finish-

ing DRI-GS and DRI-BS:

DRI-GC/GW DATA = “DRI-GS”-7 DATA

DRI-RC = 25; DRI-BC = DRI-BS; DRI-RW = 32

DRI-BW DATA = “DRI-BS”-7 DATA

3Refer to Page E13.

* 12300°K X : 0.272

Y : 0.275

(MINOLTA COLOUR ANALYZER CA-100)

*Note: Above Data can be UP/DOWN by

Volume key.

Low High

**Note: 10cd/m

180cd/m

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