Sanyo 29F5BA Schematic

Specifications

Power Source . . . . . . . . .AC220V, 50Hz / 60Hz

Receiving System . . . . . .PAL (N/N, M/M), NTSC (M/M)

Channel Coverage

Antenna mode VHF:02-13, UHF: 14-69

CATV mode VHF band: 01-13, Mid band: 14-22

Super band: 23-36, Hyper band: 37-94 Ultra band: 100-125

Low mid band: 01 and 95-99

Video IF . . . . . . . . . . . . .45.75MHz

Sound IF . . . . . . . . . . . .41.25MHz

Aerial Input Impedance . .75

Ω

Ext.Terminals

Video inputs: Phono jack

✕ 2(1Vp - p, 75Ω)

S-Video terminal (DIN 4 pin, separate Y/C signal input) ✕ 1 Audio inputs: Phono jack (R/L) ✕ 2 (436mVrms, more than 40KΩ) Video monitor outputs: Phono jack ✕ 1(1Vp - p, 75Ω) Audio monitor outputs:Phono jack (R/L) ✕ 1 (436mVrms, less than 600Ω) Variable Audio Output: Phono jack (R/L) ✕ 1 (less than 1 KΩ)

Sound Output (RMS) . . .5W + 5W

Dimensions . . . . . . . . . . 768(W) ✕ 617.5(H) ✕ 487(D)mm

Weight . . . . . . . . . . . . . . approx. 35.7Kg

Specifications subject to change without notice.

Product Code: 1 113 338 00

Original Ver sion Chassis Series: LB1-A

F5BA/F5BAS

Give complete “SERVICE REF. NO.” for parts order or servicing. It is shown on the rating plate at the cabinet back of the unit.

This T.V. receiver will not work properly in foreign countries where the television transmission system and power source differ from the design specifications.Refer to the specification table.

VIDEO

POWER

DISPLAY

CH-RECALL

1

23

456

789

0

CH

VOL

IMAGE

MENU

MUTE

SLEEP

CH

JXVD

SERVICE MANUAL Colour Television

FILE NO.

Model No. 29-F5BA

Service Ref. No. 29-F5BA-00

29-F5BA-01

(Argentina)

Contents

-2-

Safety Notice . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Chassis Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4

IC Block Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-8

Service Adjustments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9-10

Service Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Adjustment in the Service Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-14

Mechanical Disassemblies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Cabinet Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Chassis Electrical Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17-26

Safety Notice

SAFETY PRECAUTIONS

1: An isolation transformer should be connected in the

power line between the receiver and the AC line when a service is performed on the primary of the converter transformer of the set.

2: Comply with all caution and safety-related notes pro-

vided on the cabinet back, inside the cabinet, on the chassis or the picture tube.

3: When replacing a chassis in the cabinet, always be

certain that all the protective devices are installed properly, such as, control knobs, adjustment covers or shields, barriers, isolation resistor-capacitor networks etc.. Before returning any television to the customer, the service technician must be sure that it is completely safe to operate without danger of electrical shock.

X-RADIATION PRECAUTION

The primary source of X-RADIATION in television receiver is the picture tube.The picture tube is specially constructed to limit X-RADIATION emissions. For continued X-RADIATION protection, the replacement tube must be the same type as the original including suffix letter.Excessive high voltage may produce potentially hazardous X

- RADIATION.T o a void such hazards, the high voltage must be maintained within specified limit.Refer to this service manual, high voltage adjustment for specific high voltage limit. If high voltage exceeds specified limits, take necessary corrective action.Carefully follow the instructions f or + B1 volt power supply adjustment, and high voltage check to maintain the high voltage within the specified limits.

PRODUCT SAFETY NOTICE

Product safety should be considered when a component replacement is made in any area of a receiver. Components indicated by mark in the parts list and the schematic diagram designate components in which safety can be of special significance. It is particularly recommended that only par ts designated on the par ts list in this manual be used for component replacement designated by mark . No deviations from resistance wattage or voltage ratings may be made for replacement items designated by mark .

Chassis Block Diagrams (Main Signal Processing Circuit)

-3-

IC802

MEMORY

BUS SDA

BUS SCL

5

6

2

3

IC801

CPU

23

24

27

28

29

A101

TUNER

IC201

IF/VIDEO/CHROMA

SIF

FILTER

4.5MHz

32

8

18

1

19

47/48

35

34

33

14 13

31

30

29

10

51

25

16

R (OSD)

G (OSD)

B (OSD)

SOUND

CARRIER

TRAP

4.5MHz

ANALOGUE-BUS DATA

ANALOGUE-BUS ADDRESS

SIF IN

IF IN

VIDEO OUT

(WITH SIF CARRIER)

INT. VIDEO IN

B IN

R IN

G IN

S-CHROMA IN

7

3

1

IC1101

AV SW

AV2 VIDEO

AV1 VIDEO

IC001

AUDIO

AMP.

8

10

5

1

37

40

41

25

26

39

38

23

22

7

36

AUDIO OUT

SP901

SP902

R-OUT

L-OUT

L R

VARIABLE

AUDIO OUT

(REAR)

L R V

MONITOR OUT

(REAR)

IC3401

MTS DECODER

R-OUT

L-OUT

SDA

SCL

V L R

AV2 INPUT

(FRONT)

V L R

AV1 INPUT

(REAR)

S-CHROMA

Y

S-TERMINAL

POWER

SUPPLY

CIRCUIT

AC

IC651

REG.

5V

1

3

15V

9V

30V (AUDIO)

130V

(MAIN HIGH)

24V (VERT.)

T611

CONVERTER

TRANS.

IIC BUS

R

-

Y

-

Y

B

-

Y

G

-

Y

R

OUT

B OUT

G OUT

Q705

Q701

Q703

Q901

CRT

IC501

VERT. OUT

Q431

Q432

FOCUS

SCREEN

T451

FBT

DY

20

VERT. DRIVE

12

2

VERT. DY

HORIZ. DY

HORIZ.

DRIVE

VIDEO MONITOR OUT

H.V.

EXT. VIDEO

IN

HORIZ.

DRIVE

HORIZ.

OUT

X161

SAW FILTER

39

36

37

38

7

315

R

-

Y

B

-

Y

R

-

Y

B

-

Y

IC271

1H DELAY

-4-

IC801

CPU

32

ON-TIMER LED DRIVE

2

3

IC802

MEMORY

7

8

X'TAL SW-1

X'TAL SW-2

TO IC201

POWER ON/OFF

1

10

11

X'TAL

OSC for

CPU

13

AFT SIGNAL IN

15

KEY SCAN IN

KEY SWITCHES

16

OPTION SW IN

17

RESET IN

18

19

OSC for

OSD

23

ANALOGUE BUS DATA

24

ANALOGUE BUS ADDRESS

TO IC201

25

26

V-PULSE IN

H-PULSE IN

Q816

Q815

Q817

POWER

SUPPLY

CIRCUIT

D1003

Q681

24V

Q661

9V

D683

41

POWER FAILURE

DETECTION

VERTICAL

DEFLECTION

FLYBACK

TRANS.

D483

D500

POWER FAILURE

Q691

A101

TUNER

IC201

IF/VIDEO/

CHROMA

IC3401

MTS

DECODER

IC001

AUDIP

AMP.

52

PLL ENABLE OUT

(ENABLE=HIGH)

5

PLL CLOCK OUT

6

PLL DATA OUT

IF IN

51

CAPTION ENABLE (ENABLE=LOW)

49

PIP ENABLE (ENABLE=LOW)

48

CAPTION OPTION (CAPTION=LOW)

47

PIP OPTION (PIP=LOW)

46

IF IDENT IN (NO SIGNAL=LOW)

44

RC SIGNAL IN (ACTIVE=LOW)

43

COLOR KILLER IN (COLOR ID=HIGH)

42

SYNC. ID IN (NO SYNC.=HIGH)

45

AC SWITCH OPTION

(MECHA.SW=LOW, SOFT SW=HIGH))

40

TV/AV SW OUT (TV=LOW)

39

AV1/AV2 SW OUT (AV1=HIGHT)

35

RELAY ON/OFF FOR DEGAUSSING COIL OUT

34

SOUND MUTE OUT (MUTE=HIGH)

30

BLANKING OUT

29

OSD B-OUT

28

OSD G-OUT

27

OSD R-OUT

AUDIO

Chassis Block Diagrams (System Control)

IC Block Diagrams

-5-

LA7687N < IF/Video/chroma/Def. > IC201

APC

DET

LIM

AMP

FM

DET

IDENT

INT/EXT

RF

AGC

AG

AGC

DEF COIN

BUZZ

CANCEL

VIDEO

DET

VCO

AFT

VIDEO

AMP

AV-SW

SECAM

VIF

AMP

ACC

KILLER

S-SW

V-SW

C-BPF

SWITCH

1ST

BPA

APC

VCO

2ND

BPA

TINT

FILTER

ADJUST

C-TRAP

DELAY

APA-CON

(YNR)

IDENT

X-TAL

IDENT

DET

F/F

PAL

SW

MEMO

RB OUT

ADD

LPF ALC

CONT-

RAST

V/C

BUS

OSD SWITCH

RB AMP

G-Y MATRIX

BRIGHT

CLAMP

SYNC

SEP

VER

SYNC SEP

VER

C/D

IDENT

DET

H & V

BLANK

OSD

AFC 1

HOR

C/D

HOR

OSC

CLOCK

OUT

AFC 2

PHASE

SHIFTER

F.B.P.

DET

HOR

DRIVER

LA7687

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26

37 36 35 34 33 32 31 30 29 28 2743 42 41 40 39 38

45 4451 50 49 48 47 4652

AV-SW/SECAM

ID OUT

AFT OUT

ACL

S-SW

S-CHROMA

EXT-VIDEO

VCC 5V

KILLER

BUS 1

BUS 2

V-OUT

50/60Hz

H-VCC

FBP

SC

COIN

BLK-IN

B-IN

G-IN

R-IN

-Y OUT

B-Y OUT

G-Y OUT

R-Y OUT

V/C VCC

CCD 1H DL

L-SECAM

A-OUT

RF AGC

VIF IN

SAW

IF AGC

IF GND

GND

4.5MHz

5.5MHz

3.58MHz

4.43MHz

R-Y OUT

B-Y OUT

R-Y IN

B-Y IN

ABL

VIDEO OUT

SOUND TRAP

9.5MHz

IC Block Diagrams

-6-

LC89950 < IH DL > IC271

LC89950

CLAMP

AUTO-BIAS

CLAMP

BGP

CCD

254.5bit

ø1

ø2

CCD

254.5bit

ø1

ø2

4MHz OUT

DUTY

COMPENSATION

CLOCK DRIVER

TIMING GENERATOR

VCO

256 DIVIDER

PHASE COMPARATOR

PULSE SHAPER

BGP DETECTOR

BGP

OUTPUT S&G, AMP

LEVEL INCREASER

OUTPUT S&G, AMP

B-Y IN

Vdd

R-Y IN

4MHz OUT

COMP

VCO IN

PC OUT

Vdd

BGP IN

R-Y OUT

RD

B-Y OUT

Vss

5

6

7

8

9

10

11

12

13

1

2

3

4

Vss

14

LA7838 < V-OUTPUT > IC501

VERT. TRIGGER INPUT

ONE SHOT MULTI

RAMP GENERATOR

V-SIZE CONTROL SWITCH

DRIVE

THERMAL PROTECTION

OUTPUT

PUMP UP

1 2 3

4 5 6 7 8 9 10 11 12 13

LA7837

Vcc1 Vcc2

DY

Vcc2

FEED BACK

V.TRIGER

INPUT

50/60HZ SW.

IC Block Diagrams

-7-

7

12

8

9

10

11

15

18 14

13 17 16 20

Noise BPF

Noise

Detector

I

2

C Bus

Interface

SAP Demodulation Block

Composite

Signal Input

2.2µF

0.1µF

0.047µF

SAP Signal

Detector

SAP Offset

Absorption

0.47µF

0.1 µF

68KΩ

5.1

KΩ

16.6

KΩ

Noise

Detector

+

23

22

24 46 3

5

4.7µF

1µF

0.1µF

+

1KΩ

2

22µF

+

1/2Vcc

42

1µF

+

34

35

38

36

39

37

41

40

Filter

Control

Stereo

Demodulation

Block

fH

LPF

fH

Trap

Switch

75

µS

De-emphasis

Offset

Absorption

dbx Noise

Reduction

Block

Matrix

Selector

Block

Surround

Block

Tone Control Block

Volume Control Block

33

32

31

26

25

21

28

29

302719

1

2.2µF

+

0.1µF 2200pF

+

Vcc

+

10 µF

D/A

2.2µF

+

0.1µF

+

2200pF

0.022µF

4.7µF

+

1 µF

+

10 µF

+

3.3 µF

+

1 µF

+

1 µF

+

3

KΩ

1 µF

+

D/A

Input

Attenuator

I

2

C Bus

Interface

D/A

Filter

Power Supply

Reference Voltage

Pilot Detector 1

Pilot Detector 2

Phase Detector 1

Phase Detector 2

SAP Signal Output

SAP Signal Input

Spectral Timing Setting

VCA Offset Absorption

Wide-band Timing Setting

Wide-band RMS Setting

Spectral RMS Setting

Variable Emphasis Input Offset Absorption

Variable Emphasis Offset Absorption

Analog Ground

Timing Current Setting

SDA

SCL

GND(

I

2

C bus)

R-channel

Output

L-channel

Output

Surround Timing Setting

R-channel Offset Absorption

R-channel Capacity of High Frequency Band Width

R-channel Capacity of Low Frequency Band Width

L-channel Offset Absorption

L-channel Capacity of High Frequency Band Width

L-channel Capacity of Low Frequency Band Width

External R-channel Input 3

External L-channel Input 3

External R-channel Input 1

External R-channel Input 2

External L-channel Input 1

External L-channel Input 2

L-channel Fixed Output

Monaural Offset Absorption

R-channel Fixed Output

UPC1851< MTS> IC3401

IC Block Diagrams

-8-

STR81145A < Double Rectifier > IC631

2

3

Pin Function 1 Delay 2 T1 3 T2 4 Gate 5 Common

4

5

1

STR81145A

r1

r2 r3

Z1

Q1

Z2

Q3

Q2

Triac

1

2

3

MUTE

REFERENCES

NON INVERTING INPUT (1)

INVERTING INPUT (1)

SUR/MUTING

TURN ON

AND OFF

9

5

10

8

4

6

Vcc

NON INVERTING INPUT (2)

INVERTING INPUT (2)

L

R

-

+

-

+

GND

RF I 27K

SC

PROTECTION

Tj

TH

PROTECTION

OUTPUT-L

OUTPUT-R

TDA7263M

TDA7263M < AUDIO AMP.> IC001

-9-

Service Adjustments

Q251

KB

TP-G

TP-H

VR465 H-WIDTH

VR510 V-SIZE

R436

L430

T431

Q431

HORIZ. DRIVE

Q432

HORIZ. OUT

L430

T451

F.B.T.

FOCUS

SCREEN

KDY

L441

L472

IC501 VERT.

OUT

Q526

C521

Q462

Q461

C510

C515

KZ

K1111

AUDIO IN

VIDEO IN

(R)

(L)

C631

C632

IC631

L602

PS602

R632

R631

RL640

L601

KE

Q613

POWER

SWITCHING

F601

KAC

Q612

POWER

DRIVE

Q611

Q693

D615

Q692

C652

C672

Q681

Q651

VR651

+B ADJ.

KL

KM

Q141

Q140

Q202

Q201

Q691

Q252

Q861

Q862

Q021

Q684

Q111

Q243

Q242

Q261

AV BOARD

IC3401

MTS

KI

KY

IC1101

Q661

C017

IC001

AUDIO

AMP.

IC201

IF/VIDEO/CHROMA

KU

VR191

AGC

KQ

TP-D

X131

X141

TP-A

L171

KP

Q131

L161

X242

X161

A101 TUNER

VR351

H-CENTER

X243

X241

IC201

1H DELAY

IC651

KS

KG

KJ

Q852

Q815

Q871

Q816

Q817

Q646

IC803

X801

IC802

MEMORY

IC801

CPU

KC

KN

KA

KAA

KH

KD

T611

CONVERTER

TRANS.

SW1902 SW1903

SW1904

SW1905 SW1906

VOL. +

MENUCH DOWN

CH UPVOL.

-

R528

R527

TP-B

D651

Horizontal Centring Adjustment

1. Receive the mono-chrome circular pattern.

2. Adjust VR351 for optimum horizontal centre position.

Horizontal Centre

Vertical Centring Adjustment

1.Tune the receiver to an active channel. Check that the picture is in the centre of TV screen.

2. If the picture is too low, change a resistor R528 from 1KΩ, 1/2W to 470Ω, 1W. If the picture is too high, delete a resistor R528 (1KΩ, 1/2W).

Vertical centre

Horizontal Width Adjustment

1. Receive the mono-chrome circular pattern.

2. Adjust V465 for optimum horizontal width.

RF AGC Adjustment

1.Tune the receiver to most clearest (or strongest) VHF station in your area.

2. Set the brightness and contrast control to maximum. Set the colour control to minimum.

3.Turn AGC control (VR191) in the direction which causes snow to appear, then in the opposite direction until the snow just disappears.

+B Power Supply Adjustment

1. Connect DC volt-meter to “TP-B” and the ground.Set the +B adjustment control (VR651) to mid-range. (Mains voltage AC220 ± 2 volt)

2. Set brightness and contrast to minimum.Tune the receiver to an active channel and synchronized picture.

3. Adjust +B adjustment control (VR651) for 130 ± 1.0 volt DC.

Focus Adjustment

Adjust focus control for well defined scanning lines.

Vertical Size Adjustment

1.Tune the receiver to the mono-chrome circular pattern.

2. Adjust vertical size control (VR510) for full scan.