1. ELECTRICAL ADJUSTMENTS 1.1 Supply Voltage Adjustment Connect a digital voltmeter to the cathode of diode D607 at the AV mode of the TV and set the screen voltage to the minimum with the screen potentiometer. Adjust the main supply voltage (B+) with P607 potentiometer to the following value (after supply adjustment, readjust Screen and focus voltage). 14 : 105 VDC (for A33EKC01X01) 20 : 118 VDC (for A48EJW011X21) 21 : 110 VDC (for A51EFS83X191) 2. SERVICE ADJUSTMENTS To enter the Service Mode, Service In/Out button on the Service Remote Control or activate the Picture Menu with the user remote control and press "9301" (or "8500" on some models). Press 0 buttonto exit the Service Mode). Red , Green, Yellow and Blue Teletext buttons are for Feature Setup, Geometry, White Balance and IF menus respectively.

2.1 IF Adjustments 2.1.1 PAL SECAM BG/DK/I

Supply a 471.25 MHz BG system colour bar RF signal to the set by a pattern generator and find this signal in setup menu (C21).

In order to deactivate AFT loop, shift value of fine tuning from central point by one unit and then shiftback to the central point again (2 small vertical lines are seen in scale on central point). Store the channel by selecting Store and pressing OK button.

Switch on the Service Menu and press Blue teletext button. Check that value of PVC38 is 07. Adjust the coil LC101 until the the OK is seen. Press OK button on the Remote Control. Exit from the service menu.

Note: PVF38 is for fine tuning. However, it is automatically applied when OK button is pressed at PVC38 item. Thus any manual adjustment is not required.

2.1.2 SECAM L/L

They would not to be adjusted . PVC33 and PVF33 were reserved for Secam LL. 2.2 AGC Adjustment

Apply a signal with amplitude 701 dBuV to the antenna input of TV with a pattern generator (switch sound carrier to Off and switch Video Ext to On).

Switch on the Service Menu and press Red teletext button. Find the AGC with P+ / P- buttons. Measure the amplitude of 38.9 MHz sinusoidal signal on pin 11 (IF2) of Tuner with an oscilloscope. Change AGC to get 640 20 mVpp. Add 5 to AGC value and change 2.AGC to this value. Exit from the service menu.

2.3 Screen Adjustment

Switch on the Service Menu and press Yellow teletext button. Find item SCRN in the menu. Apply color bar pattern

Manuel AlvesBEKO Chassis 12.7

For 14 sets: Adjust the Screen potentiometre until the voltage across the pin of R727 (that is connected CRT cathode) and ground is 1393 VDC.

For 20-21 sets: Adjust the Screen potentiometre until the voltage across the pin of R727 (that is connected CRT cathode) and ground is 1643 VDC (For 20Ekranas CPT, adjustment value is1543 VDC )

Exit from the service menu 2.4 White Balance Adjustment

Apply a white pattern with a pattern generator to the antenna input. Enter the Service Menu and and press Yellow teletext button. Select B.DRV option with P+ / P- buttons and change its value to 32 with V+ / V- button. Adjust R.DRV and G.DRV for white balance. Adjust R.CUT and G. CUT for red and green cut off (There is no blue cut off adjustment). If white balance can not be adjusted properly change B.DRV value. Exit from Service menu.

2.5 Geometry Adjustments

Apply the cross hatch pattern with a pattern generator to the antenna input. Enter Service Menu and press Green teletext button. Adjust Vertical Amplitude with V.4:3 option. Add 18 to V.4:3 value and change V.16:9 to this value. Adjust vertical position with V.POS, vertical linearity with LNRTY, horizontal position with

H.POS. Substract 14 from V.4:3 value and change V1. 60 to this value. Add 4 to V.4:3 value and change V2. 60 to this value. Set VP.60 to the same value of V.POS. Set LN.60 to the same value ofLNRTY . OSD window position can be centered on the screen with OSD.H and OSD.V. Exit from the Service Menu.

Note that: There is no horizontal width adjustment in this chassis. It can be adjusted by changing power supply voltage in the interval of -1 and +1 V.

2.6 Feature Setup Enter the Service Menu with the Service RC and and press Red and Blue teletext button. Check that below features match with the set. TUNER : Phillips, Sharp&Alps, Panasonic, Temic ST.BY : YES (Automatic switch off is active, default value), NO (can be used during repair) AV2 : YES (Front AV is available), NO CLR.S : PAL, PAL/NTSC3.5 (+NTSC Playback), PAL/SECAM, PAL/SECAM/NTSC3.5 (NTSC Pback) SND.S : BG, I, BG+DK, BG+LL QSS/I : INTERCARRIER (default value) , QSS TEXT : NON TEXT, DEFAULT (Teletext), FASTTEXT LANG : A (West Europe), B (East Europe) HOTEL : NORMAL TV, HOTEL TV RGBIN : YES (When Scart RGB exists, aerial isnt showedfor only for some Hotel TVs), NO (Default) APR : ON (Auto RGB level control is available, default value) , OFF B.STR : ON (Black level control is available), OFF (default value) ATS : YES (Automatic tuning system is on), NO

Note : ATS must be NO for non-teletext sets. For Hotel TVs, ATS can not selectes YES. AVL : YES (Automatic Volume Limiter is on, default value), NO ZPG : YES (Timer Programmed channel switching function is on), NO ZAPP : YES (One button channel switching function is on), NO It is selected YES for Hotel TV. 4-KEY : NO (3-button version), YES (4-button version) - Note: after SW version SC1120-05. GAME : YES (Tetris game available), NO - Note : available in Software Version SC1120-G1 BBACK : YES (Blueback available), NO - Note : available in Software Version SC1120-G1

2.7 Hotel Mode If Hotel option in the Service Menu is selected as HOTEL TV, the setup menu is get by entering 4658 in the Features Menu. The setup menu includes the following items: 1. HOTEL MODE : On/off selection and end of TV channels (start is 00) 2. RADIO MODE : On/off selection and start of Radio channels (end is 99). 3. MAX VOLUME : Maximum allowed volume level 4. RESET ADJ. : Sound and picture preset values that will be applied after reset operation 5. MESSAGE : Welcome Message can be edited (max. 148 character long) 6. INFO SCREEN : Information Message can be edited (3 pages, each 500 character long) Customer gets these pages by pressing INFO button of Remote Control 7. LOAD DATA : Loads data from the Smart loader to a TV 8. SAVE DATA : Save data from master TV to the Smart Loader 2.8 Factory Settings for Service Mode Values given in Table 1 are typical values and can vary according to the CRT type.

14" 20" 21" AGC Automatic Gain Control 1 32 32 322.AGC Automatic Gain Control 2 AGC + 5 AGC + 5 AGC + 5ST.BY Standby YES YES YESPVC38 VOC Coarse (BG/I/DK) 07 07 07PVF38 VCO Fine (BG/I/DK) 68 62 62PVC33 VOC Coarse (LL') 07 13 13PVF33 VCO Fine (LL') 64 64 64APR Auto RGB level control ON ON ONB.STR Black level control OFF OFF OFFQSS/I QSS/Intercarrier INTERCARRIER INTERCARRIER INTERCARRIERG.DRV Green level 32 32 32R.DRV Red level 40 40 32B.DRV Blue level 32 32 32R.CUT Black level offset red 36 36 32G.CUT Black level offset green 32 32 32SCRN Screen (used for screen adj.) 0 0 0HPOS Horizontal shift 30 32 32VPOS Vertical shift 12 11 07V.4:3 Vertical amplitude 4/3 PAL/SEC 23 32 36V.16:9 Vertical amplitude 16/9 PAL/SEC V.4:3 + 18 V.4:3 + 18 V.4:3 + 18LNRTY Vertical linearity 51 13 49VP.60 Vertical amplitude NTSC 12 11 07V1.60 Vertical amplitude 4/3 NTSC V.4:3 - 14 V.4:3 14 V.4:3 14V2.60 Vertical amplitude 16/9 NTSC V.4:3 + 4 V.4:3 + 4 V.4:3 + 4LN.60 Linearity NTSC 51 13 49OSD.H OSD Horizontal Shift 31 31 29OSD.V OSD Vertical Shift 39 39 38 Table 1 2.8 Exit from Service Menu During exit from service menu, the software version and feature options (hexadecimal number) are shown on the screen. For example: SC1.120-01 66F3 T03030702

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SC

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SD

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+5V

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n.c.

8

+33V

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IF1

10

IF2

11

GND4 15

GND3 14

GND2 13

GND1 12

TU101 TUNER

R441

220RR442

220R

R4362.7k

R43739k

C43347u/16V

L40518uH

C4351n

C43047u/16V

C4291nF

R220

1k

R214

100R

T202BC848

R2231k

C207

47u/16V

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560RR208

560R

R209100R

R210 1k

R212

1k

R21115k

R213

15k

R201

15kR2023.9k

R20575R

R20475R

R20375R

R20675R

R21775R

R2162.2k

T201BC848

C2011n C2021n

C203220p

C205220p

C204470p

C206470p

R215

68R

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

1618

20

2119

17

SK201SCART

STAND_BY1

2

MUTE3

LED4

5

6

7

8

VDD_2.5V9

VSS10

VDD_3.3V11

CVBS12

VDDA_2.5V13

VSSA14

KEY15

STATUS16

17

POWER_CTRL18

H_SYNC19

V_SYNC20

21

22

23

IR24

AV_SEL25

SERVICE26 SDA1 27

SCL1 28

VSS 29

VDD_3.3V 30

31

32

RESET 33

XTAL2 34

XTAL1 35

VSSA 36

VDDA_2.5V 37

R_OSD 38

G_OSD 39

B_OSD 40

FBL_OSD 41

VDD_2.5V 42

VSS 43

VDD_3.3V 44

45

46

47

SCL0 48

SDA0 49

V_LIN 50

51

52

IC401

SDA5552

E01

E12

E2 3

GND 4SDA5

SCL6

MODE_WC7

VCC8

IC402

24C04

VDD_3.3V

R4013.3k

R4051k

R404

10k

R406270R

R4114.7k

R412

4.7k

C42147n

C40647n

C42247n

C40347n

3.3V

3.3V

T401BC858

D401LED

VDD_2.5V

VDD_2.5V

C40247u/16V

D4021N4148 L401

10uH

3.3V

C40547u/16V

L40210uH

3.3VVDD_3.3V

VDD_3.3V

C42347n

C42433p

C42533p

Q4016MHz

R4648.2k

C42610u/16V

3.3V

VDD_3.3V

R469

100RR470

100R

R4674.7k

R4714.7k

T415BC848

T416BC848

3.3V 5V

3.3V 5V

R4724.7k

R4684.7k

D406

1N4148

D4071N4148

C428100p

C436100p

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SERVICEX402

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C418

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R432

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R431

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P2

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C41547u/16V

C413220p

T403

BC848

R41810k

R423

1k

3.3V

R4202.2k

R419 10k

C41247n

8V

C40910n

D4041N4148

VDD_2.5V'

R413

1k

SW401SW402SW403

R409

1.5k

R410

680R

R4081.5k

C40447n

3.3V

C40847n

C40747u/16V

L40310uHD403

1N4148

3.3V

R4071M

AV_SEL

STATUS

SDA

SCL

CVBS_TXT

5V

1

2

X601

MAINS

1

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X602

DEGAUSS

L601

LINE FILTER

F601T 2.5AH 250V

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3

1

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SW601

POWER SWITCH

C601

100n/275V

C602100n/275V

R601

2.7R 5WC603

1n/1kV

C6041n/1kV

D601RF2007

D602RF2007

D603RF2007

D604RF2007

-R604PTCC607

22n/250V

C60568u/400V

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2

6

10

12

14

9

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R603

68k 1

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C60633n/630V

D605RGP10J

C608470p/2kV

T601STP3NB60FP

R605

22R 0.5W

L602

47uH

D6061N4148

C61122u/50V

C61010n

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PCS2

RZI3

SRC4

OCI5

FC26

SYNC7 PMO 8

REF 9

FC1 10

PVC 11

GND 12

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VCC 14IC601

TDA16846

R612

15k

R6096.8k

P6012.2k

C61356p

C612560p C609

2.2n

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R606

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R608

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C61847u/160V

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R615

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GNDIC603 7805

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C62647n

C62110n C622

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C62947n C631

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C627

220u/16V

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T602BC848

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5V

3.3V

R56682R 3W

T504BU808DFI

R557330R

R570

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2.2uHC553

47u/35V

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12.5V

C5556.8n/1.5kV

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C554390n/250V

C5564.7u/160V

R56922k 0.5W

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D556BA157

C563

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C562100n/63V

R52622k

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C56010u/250V

33V

1

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C43868p

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R4442.7k

R41727k

R4165.6k

R415

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R41410k

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STAND_BY

ST_BY

B+

STATUS

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AV_SEL

FB_EXT

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CVBS1

SC_CVBS_OUT

AUD_IN1

AUD_OUT

STATUS

AGC

IF

FB

R

G

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CVBS1

SC_Vid_out

Aud_in1

Aud_out

GND

IF

AGC

1

2

3

4

5

F101

G1968M

R142

220R

8V

Q101

4.43MHz

R13847k

R181470R

R458470R

R459470R

R116

470R

ZD1016.2V

T108BC848

8V

R1332.2k

123456

X101CRT

R137

270RR136

270RR135

270R

CVBS_TXT

H_OUT

BCL

V_OUT

L1041uH

R1121k

SIFIN11

SIFIN22

AGCSIFCAP3

IFVREF4

AGCPIFCAP5

PIFIN16

PIFIN27

AGC8

IFPLL9

GNDIF10

AMFMOUT11

VCCIF12

INTCVBSO13

EXTAUDIN14

PIFLC115

PIFLC216

VCC217

CVBSIN118

GND219

CVBSIN220

BS21

Y_CVBSIN322

CHR23

APR24

B_EXT25

G_EXT26

R_EXT27

FB_EXT28 NC 29

B_OUT 30

G_OUT 31

R_OUT 32

ICATH 33

BOSD 34

GOSD 35

ROSD 36

FBOSD 37

XTAL3 38

XTAL2 39

XTAL1 40

CLPF 41

VAMP 42

GND1 43

CVBSO1 44

VCC1 45

BCLSAF 46

VERT 47

HOUT 48

LBF_SSC 49

SLPF 50

SCL 51

SDA 52

VCCD 53

GND0 54

AUDIOOUT 55

FMCAP 56

IC101

STV2246

C122

100n

C121100n

C120100nR131

330kC137

1u/16V

C139

1u/16V

C136

1u/16V

C1231n

C134

47u/16V

LC101

C1021u/16V

R113

150R

L103

6.8uH

F103

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R1051k5

C11347u/16V

C1141nFL101

10uH

5V

5V'

8V

C1101n

C109

330nR102150R

C1011u/16V

C10510u/16V

C108

22n

C11847n

C11747n

C11647n

R4562.2k

R4552.2k

R4542.2k

Q102

3.58MHz

C119100n

C1294.7n

C1251u/16V

R10127k

D110

1N4148

R175

330kR176330k

C1241n

C135100u/16V

ZD1028.2V

R183

1k

D1071N4148

R13056k

R119

100RR1348.2k

R132

2.2k

C12622u/16V

LFB

C1284.7n

C1302.2u/16V

R122

15k

R118

100R

C115

1n

C127

10u/16V L102

10uH

5V

C103

1u/16V C107

1u/16V

FB_OSD

B_OSD

R_OSD

G_OSD

V_AMP

C504

220uF / 25V

220uF / 25V

470uF / 25V

C555

6.8nF / 1.6kV

7.1nF / 1.6kV

8.2nF / 1.6kV

R527

680K

680K

-----------

R510

150R

100R

47R

R509

2.2R

1.8R

1.5R

R520

100K

1K

1K

R560

0.47R

0.68R

0.47R

C564

1000uF / 16V

470uF / 16V

220uF / 16V

R563

10K

8.2K

8.2K

C185

22n

R184

680R

C181

100p

C182

100p

C1801n

8V

R4575k6

C184

220pF

SC_CVBS_OUT

CVBS1

C138

1u/16V C183

100p

CVBS2

FB_EXT

R_EXT

G_EXT

B_EXT

FB

R

G

B

AUD_OUT

IF

IF

AGC

FRONT AV

BLUE_o

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GREE

N_out

RED_

out

R450

220R

R451

220R

R452

220R

R453

5.6k

8V

R13910k

SCL

SDA

5V'

1 2 3 4

X201FRONT_AV

R17075R

R1725.6K

R171100KC1701n

CVBS2AUD_IN2

FRONT AVOPTION

T101BC848

R14710k

R150

10k

8V

C14010u/16V

R148

33k

T102BC848

D105

1N4148

D106

1N4148

C11210u/16V

T107BC848

R108180k

R1571k

8V

R15856k

C133

22u/16VR149

100kR10668k

R1562k2

R159

OR

C131

22u/16V

AV_SEL

EXT_AUD_IN

AUD_IN2

AUD_IN1

AV_SEL

FRONT AVOPTION

R305

10k

R302

15kR3014.7k

+INA1

NC2

-INA3

GND4

GND5

OUTA6

NC7

VCC8 NC 9

NC 10

OUTB 11

GND 12

GND 13

-INB 14

NC 15

+INB 16IC301

TDA2822

C304

2n2

MUTE

C306100n

C307100n

1

2

3

X301SPEAKER

C308470u/16V

C30310n

12.5V

R309

3.3R 1W

T303BC848B

C301

10u/16V

R3074R7

R3064R7

12.5V

R310

1.8k

T301BC848B

T302BC848B

R303

68kR3048.2k

8V

MUTE

R50322R 0.5W

C508A33n

C501220n/100V

R5012.2R 0.5W

1

2

X501

VERTI

CAL

C511

1u/16V

R524

3.9k

R506150k

C5051u/16V

R521100k

R527680k

R52356k

R51310k

D502

RF2007

C5121u/16V

C510100u/50V

V_SYN

C

V_OUT

R502470R 0.5W

R5191k

R5041k

R516

1k6

C50610u/16V

T501

BC848

T502 BC848

R518

82k

R522

56k

R5201k

R509TABLE 0.5W

C508 15n

C509

470p C513

100n

1 2

HS501

VERTICAL HEATSINK

R505150k

PWR

1

OUT

2

TRIG

3

H_AD

J4

VREF

_DEC

5

GND

6

RAMP

7

BUFF

ER8

INV

9

VCC

10

FLYB

ACK

11

IC501TDA8174AW

V_AMP

D5031N4148

12.5V

R512

1k8R5081k8

R510TABLE

R511

2.7k

C503

1000u/35V

C504220u/25V

V_LINV_LIN

D560

RGP10JC564

TABLE

U_VREF

U_V_SUPP

FB_OSD

B_OSD

G_OSD

R_OSD

L103A

6.8uH

R568

1k

C558

47n

C570

10nR564

560R

D5571N4148

D558

1N4148

R56510K

5V

LFB

Position

14 EK3

20 VC1

21 GS7

Audio_GND

R185

0R

R2180R

L109

18uH

CABLE3A

CABLE4A

SDA_E

SCL_E

IF1

4

5

6

7 89

10

11

12n.c.

G1

GREEN

G2RED

HT

HT

BLUE

GND

GND

X703 CRT SOKET

1

3456

2

X701RGB

crt

R702220R

C701

47p

T701BF422

R71015k

155V

R711390R

crt

C703 390p

R712100R

crt

R7132.7k

8V_

D702 1N4148

C705

470pT702BF421

R7141k

R703

220R

C706

47p

T703

BF422

R71515k

155V

R716390R

crt

C707 390p

R717100R

crt

R718

2.7k

8V_

D703 1N4148

C708

470pT704BF421

R7191k

R704220R

C709

47p

T705

BF422

R72015k

155V

R721390R

crt

C710

390pR722100R

crt

R7232.7k

8V_

D704 1N4148

C711

470p

T706BF421

R7241k

8V_

R725

1.5K

R7261.5K

R7271.5K

C7122.2n

C713100n/250V

crt

155V

1

2

3

X702CRT

CRT BOARD

G2

AQUA SMPS

R701

100R

R706

220R

R707220R

R709

220R

C70210u/250V D701

1N4007

155V

Blue

Green

Red

Icatch

R728100k 1/2W

poza1

POZA

8V

TEST1

G70.820

12.7 CTV CHASSIS

C20810n

C634220u/16V

Subject to change without notice

R107

0R