Sanyo C21LB30S Bedienungsanleitung

SERVICE MANUAL Colour Television

Product Code: 13007304

Original Version

Chassis Series: LA6-A

BC6E

FILE NO.

Model No. C21LB30S

Service Ref. No. C21LB30S-00

(Argentina)

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 trans-

mission system and power source differ from

the design specifications. Refer to the speci-

fication table.

Specifications

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

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

Channel Coverage

Antenna mode VHF: CH02-CH13, UHF: CH14-CH69

CATV mode VHF band: CH01-CH13, Mid band: CH14-CH22

Super band: CH23-CH36, Hyper band: CH37-CH64

Ultra band: CH65-CH94 and CH100-CH125

Low mid band: CH95-CH99

Input Terminals

AV1 (Video): Phono jack ✕1

AV1 (Audio): Phono jack (R/L) ✕1 set

AV2 (Video): Phono jack ✕1

AV2 (Audio): Phono jack (R/L) ✕1 set

Sound Output (RMS) . . . . 3W + 3W

Speakers . . . . . . . . . . . 5cm x 9cm x 2 pcs.

Dimensions . . . . . . . . . 606(W) ✕479 (H) ✕ 483(D) mm

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

Specifications subject to change without notice.

映像メディア（事）デザイン部

JXMRR

MENUtCHs

VOLUME

VIDEO

L-AUDIO-R

Contents

-2-

SafetyNotice ........................................................................... 2

ChassisBlockDiagram ................................................................. 3-4

ICBlockDiagrams..................................................................... 5-7

ServiceAdjustments................................................................... 8-17

PurityandConvergenceAdjustment....................................................... 18

CabinetPartsList....................................................................... 19

ChassisElectricalPartsList............................................................ 20-27

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

provided 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, adjust-

ment covers or shields, barriers, isolation resistor-

capacitor networks etc.. Before returning any

television to the customer, the service techni-

cian 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 con-

structed 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 hazard-

ous X - RADIATION. To avoid 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 for + 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 parts designated on the parts 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

-3-

MAIN SIGNAL PROCESSING CIRCUIT

AERIAL

KEY SW R/G/B CRT

12 RCRT DRIVE

26 13 G+180V

14 BHV/Fo/Sc

R/C PRE-AMP

TUNER BUS 21 H-OUT DY-H

(LA76931A

IF V

)

HORIZ-DRIVE HORIZ-OUT

SAW FILTER

44 FBT PULSE

AV1 46 SUSOC

AV2 54

VIDEO SW-AUDIO SW 17 V-OUT (LA78041

MONITOR OUT VIDEO 52 F.B. / LA78040)

MONITOR OUT AUDIO VERT-OUT

BUS

5FM NVM

AC220V (SANKEN) AUDIO

SPEAK(L)

L/R L

(CXA2234QP)

WF (LA42032 R

/LA42031) SPEAK(R)

POWER AUDIO-OUT

63/64

STR-W6754

/STR-W675

38/39

+9VA(AUDIO)

+9VA

Chassis Block Diagrams

-4-

POWER SUPPLY IC (STRW6753)

FUNCTIONAL BLOCK DIAGRAM

IC Block Diagrams

-5-

IC201 < IF/Video/Chroma/Def./CPU > LA76931

IC Block Diagrams

-6-

S ample application cir cuits

S ample applicati on cir cui ts2

L A78040B /040/041/045

Vr ef

+V cc

1 2 3 4 5 6 7

L A78040B /040/041/045

Vr ef

+V cc

1 2 3 4 5 6 7

-V cc

123 4 5 6 7

G ND

Ver.OU T P UT

OU T PU T S TAG E V cc

N ON I N V.I N P UT

IN V E R T I N G I N P UT

V c

P U M P U P O UT

P ump

AMP

T her mal

P r otecti on

L A78040B /040/041/045

+V cc(24V)

1 2 3 4 5 6 7

10K 33K

10K

11K

4.7u

1000u1.0

330

1.0 0.1u

100u

10K

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IC001<AUDIO AMP> LA42032

IC Block Diagrams

-7-

IC3401 <MTS> CXA2234QP

-8-

Service Adjustments

MENUtCHs

VOLUME+

VIDEO

L-AUDIO-R

S1.11100101 S2.11111000

ADDRESS DATA

02 H-PHA 08

Item No. Item Data value

General

This set has an On-screen Service Menu system included in the CPU that allows remote operation for most of the

service adjustments.

2. Service Adjustments:

Press the CHANNEL UP or CHANNEL DOWN

button on the remote control handset to select the

desired service menu item you want to adjust.

Use the VOLUME + or

to adjust the data. The + or

button will increase or decrease the data

sequentially.

3. Exit from the Service Menu

Press the MENU button to turn off the Service Menu

display.

The data which is set in the service mode is stored

into the memory IC automatically.

[ Service Mode Display ]

Service Adjustment-1

1. Enter the Service Menu

While pressing the MENU button on the television, press the Number Key 2 on the remote control unit.

The Service Menu now appear.

IC802 (EEPROM) Replacement

When IC802 (EEPROM) is replaced, IC801 (CPU) will automatically write the initial reference data into IC802 for basic TV operation.

However, the bus data should be checked and some bus data should be set up before attempting the service adjustments. (See

pages 9 ~ 10 for detailed information.)

映像メディア（事）デザイン部

JXMRR

映像メディア（事）デザイン部

JXMRR

VOLUME +

VOLUME

CHANNEL UP

CHANNEL DOWN

-9-

Service Adjustments

On-screen Service Menu

Following table shows the initial values which have been stored in the CPU ROM, and items for the service adjustments.

When IC802 (EEPROM) is replaced, check the bus data to confirm they are the same as below. The shaded menu should be

checked and be set up or readjusted according to the procedures described in the following pages.

Initial Setup Data marked with an * should be changed from Initial Value Data.

No Item Initial value Range Description

1 RFAGC 13 00~63 RF AGC adjustment

2 H-PHA 12 00~31 H-PHASE adjustment(50Hz)

3 V-DC 28 00~63 V-POSITION adjustment(50Hz)

4 V-SIZ 79 00~127 V-SIZE adjustment(50Hz)

5 V-SCO 18 00~31 Vertical-S compensation(50Hz)

6 V-LIN 15 00~31 Vertical linearity adjustment(50Hz)

7 H-P60 +3 -16~+15 Difference value of H-PHASE adjustment(60Hz)

8 V-P60 0 -32~+31 Difference value of V-POSITION adjustment(60Hz)

9 V-S60 0 -64~+63 Difference value of V-SIZE adjustment(60Hz)

10 VSC60 0 -16~+15 Difference value of Vertical-"S" compensation(60Hz)

11 VLI60 0 -16~+15 Difference value of Vertical linearity adjustment(60Hz)

12 OSDHP 37 01~255 OSD horizontal remark position

13 OSDC 04 00~07 OSD Contrast

14 V-SCP 03 0~7 V-SIZE COMP

15 SBIAS 31 00~127 Sub Bias adjustment

16 RBIAS 00 00~255 Red Bias adjustment

17 GBIAS 00 00~255 Green Bias adjustment

18 BBIAS 00 00~255 Blue Bias adjustment

19 RDRIV 64 00~127 Red Drive adjustment

20 GDRIV 08 00~15 Green Drive adjustment

21 BDRIV 64 00~127 Blue Drive adjustment

22 White balance (a lateral line)

23 DRV Bright and Dark of White balance adjustment

24 B-YD 11 00~15 B-Y DC Level

25 R-YD 11 00~15 R-Y DC Level

26 B-YDN 0 -16~+15 Difference value of NTSC B-Y DC Level

27 R-YDN 0 -16~+15 Difference value of NTSC R-Y DC Level

28 G-YA 00 00~01 G-Y Angle

29 RBGB 10 00~15 R-Y/ B-Y Gain Balance

30 RBAG 08 00~15 R-Y/ B-Y Angle

31 G-YAN 00 00~01 NTSC G-Y Angle

32 RBGBN -8 -8~+7 Difference value of NTSC R-Y/ B-Y Gain Balance

33 RBAGN +4 -8~+7 Difference value of NTSC R-Y/ B-Y Angle

34 COGV 03 00~03 Coring Gain

35 BLKS 00 00~03 Blk.str.start(W/Defeat)

-10-

Service Adjustments

No Item Initial value Range Description

36 BLKG 00 00~03 Blk.STR.gain

37 BRTA 00 00~01 Brt. Abl. Def

38 BRST 00 00~01 Mid. Stp. Def

39 BRTH 00 00~07 Bright. Abl. Threshold

40 WPL 00 00~03 WPL Ope. Point (W/ Defeat)

41 YGAM 00 00~03 Y Gamma Start

42 PRES 02 00~03 AV Mode Pre Shoot adj

43 OVERS 03 00~03 AV Mode Over Shoot adj

44 RFCO +1 -2~+1 Difference value of RF Coring Gain

45 PRESN 00 00~03 RF Mode Pre Shoot adj

46 OVERSN 03 00~03 RF Mode Over Shoot adj

47 TINT 0 -16~+15 Tint

48 SHRF +5 -16~+15 Difference value of RF sharpness

49 RFCOL +10 -16~+15 Difference value of TV color

50 TEXC +2 -4~+3 OSD TEXT Contrast

51 AUFL 00 00~01 Auto. Flesh

52 COOP 07 00~07 Color Killer opt.

53 VCOFRQ 00 0~255 VCO Freq

54 DEEM 00 00~01 De-emphasis TC

55 V-LVL 06 00~07 Video Lvel

56 STRAP 04 00~07 S.Trap Adjust

57 IFOM-S 00 00~01 OVER MODURATION SW

58 IFMN-S 00 00~01 AUDIO MONITOR SW MONITOR OR FM

59 IFTRPS 00 00~01 IC built-in SIF TRAP SW ON-OFF

60 OVMLVL 08 00~15 OVER MOD LEVEL

61 VBSW 00 00~01 VBLK SW

62 FBTS 00 00~01 FBPBLK. SW

63 HBLKL 05 00~07 H-Blanking Control Left

64 HBLKR 03 00~07 H-Blanking Control Right

65 AFCRF 00 00~01 Adj. of AFC Gain & gate (RF)

66 VSURF 00 00~01 Adjustment of Vertical Sync.Separation Sensitivity

(RF)

67 CDMRF 00 00~07 Vertial Count Down Loop Adjustment (RF)

68 AFCAV 01 00~01 Adj. of AFC Gain & gate (AV)

69 VSUAV 00 00~01 Adjustment of Vertical Sync.Separation Sensitivity

(AV)

70 CDMAV 00 00~07 Vertial Count Down Loop Adjustment (AV)

71 HLK-T 00 0,1 Hlock,Vdet(RF)

72 HLK-V 00 0,1 Hlock,Vdet(AV)

73 VCOADJ 04 00~07 C.VCO Adjust (NTSC PAL-N corresponding)

74 GRAY 00 0,1 GRAY MODE

75 CROSS 00 0~3 CROSS B/W

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