Sanyo C21LF41 Bedienungsanleitung

SERVICE MANUAL Colour Television

Product Code: 13007604

13007605

Original Version

Chassis Series: LA6-A

BC2E

FILE NO.

Model No. C21LF41

C21LF41B

Service Ref. No. C21LF41-00

C21LF41B-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

Aerial Input Impedance . . 75

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

Output Terminals

Video Monitor Output: Phono jack ✕1

฀฀฀฀Audio Monitor Output: Phono jack (R/L) ✕1

Headphone Jack: Mini stereo jack ✕1

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

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

Dimensions . . . . . . . . . 596(W) X 493(H) X462(D) mm

Weight . . . . . . . . . . . . . approx. 22 Kg

Specifications subject to change without notice.

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JXMRR

POWER

-8-

Service Adjustments

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.)

йȉǯǋǊÎࠔÏǯǞǌțശ

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

-11-

Service Adjustments

No Item Initial value Range Description

76 HL-TON 00 0~3 HALF TONE LEVEL

77 AVNCON 64 00~127 AV CONTRAST(No Signal in AV)

78 AVNBRI 64 00~127 BRIGHT (No Signal in AV)

79 POMT 12 00~127 Power Mute Time

80 CHMT 05 00~31 CH Mute Time

81 SYST 03 00~255 System N

82 RELAY 125 00~255 Power relay on time(8msec)

83 CCD 35 1~63 CAPTION Horizontal Remark Position

84 AVTVTM 01 0~255 FEATHER MENU AV/TV CHAGNE

85 FM-G 01 00~01 FM Gain

86 VSHIFT 02 0~15 V.SHIFT

87 CTRAP 04 0~7 C.TRAP ADJUST

88 CBPF 00 0~3 C.BPF ADJUST

89 C-KILL 00 0~1 C_KILL ON

90 G-YAMP 08 0~15 G-Y AMP

91 B-YDPM 0 -16~+15 Difference value of PALM B-Y DC Level

92 R-YDPM 0 -16~+15 Difference value of PALM R-Y DC Level

93 YTH 00 0~3 Y TH

94 YGAIN 00 0~3 Y Gain

95 RWIDTH 00 0~3 R Width

96 ROFSET 00 0~3 R Offset

97 BWIDTH 00 0~3 B Width

98 BOFSET 00 0~3 B Offset

99 RGBTMP 00 0~1 RGB TEMP SW

100 VCOPLM 02 00~07 C.VCO Adjust (PAL-M corresponding)

101 OSDPIC 00 00~127 OSD MENU PICTURES H-POSITION

102 OPTPOW 00 0~1 LAST POWER STATUS OPTION

103 OPTAVN 00 0~1 1AV OR 2AV SYSTEM OPTION

104 VER VERSION AND DATE

-12--12-

Service Adjustments

Important Notice:

Do not attempt to adjust service adjustments not listed on below otherwise it may cause loss of performance and for

correct operation.

Item 01 [RFAGC] AGC

NOTE: Do not attempt this adjustment with weak signal.

1. Tune the receiver to most clearest (or strongest) VHF

station in your area. Set the brightness and contrast

controls to maximum. Set the colour control to mini-

mum.

2. Select Item No. 01 [RFAGC] in the service mode.

3. Change value until the snow noise just disappears.

4. Exit from the service mode.

1. Receive a monochrome circular pattern.

2. Set the brightness and contrast to normal.

3. Select Item No. 02 [H-PHA] in the service mode.

4. Change value to be optimum horizontal centre posi-

tion.

5. Exit from the service mode.

1. Receive a monochrome circular pattern.

2. Set the brightness and contrast to maximum.

3. Select Item No. 03 [V-DC] in the service mode.

4. Change value to be optimum vertical centre position.

5. Exit from the service mode.

Item 04 [V-SIZ] VERTICAL SIZE

1. Receive a monochrome circular pattern.

2. Set the brightness and contrast to maximum.

3. Select Item No. 04 [V-SIZ] in the service mode.

4. Change value to be optimum vertical size.

5. Exit from the service mode.

1. Receive a monochrome circular pattern.

2. Set the brightness and contrast to normal.

3. Select Item No. 12 [OSDHP] in the service mode.

4. Change value to be proper OSD position.

5. Exit from the service mode.

1. Tune receiver to a caption channel.

2. Check that CAPTION position is in the horizontal

center of the screen. If CAPTION center is too right or

left, perform steps 3-6. (See figure below.)

3. Select Item No. 85 [CCD] in the service mode.

4. Adjust data with + or - key for proper horizontal center.

5. Exit from the service mode.

Vertical centre

Vertical size

XXX XXXX XXXX XXX

Caption H-position Adj.

A=B

Item 02 [H-PHA] HORIZONTAL CENTRE

Item 12 [OSDHP] OSD POSITION

Horizontal centre

Item 03 [V-DC] VERTICAL CENTRE

±Item 85 [CCD] CAPTION H-POSITION ADJ.

-13-

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JXMRR

-13-

Items 16-23 GREY SCALE

(1) Receive a monochrome circular pattern.

(2) Set the brightness and colour to normal, contrast to maximum.

(3) Enter to the service mode.

(4) Set each value of Item-16 RBIAS, 17 GBIAS, 18 BBIAS mode to 00. Set each value of Item-19 RDRIV, 21 BDRIV

mode to 63, 20 GDRIV to 07.

(5) Select Item-22 mode to be one horizontal scanning line and turn the screen volume on the FBT to obtain just vis-

ible one coloured line.

(6) Press the 1 (Red Bias +), 4 (Red Bias

), 2 (Green Bias +), 5 (Green Bias

), 3 (Blue Bias +) or 6 (Blue Bias

)

button to adjust the brightness of each colour until a dim white line produced. Please see the control button alloca-

tions in this mode.

(7) Select Item-23 DRV mode to enter the white balance adjusting mode.

(8) Press the 7 (Red Drive +), RECALL (Red Drive

), 8 (Green Drive +) or 0 (Green Drive

) button, 9 (Blue

Drive +) or SLEEP TIMER (Blue Drive

) alternately to produce normal black and white picture.

(9) Exit from the service mode.

(10) Check for proper grey scale tracking at all brightness levels.

NOTE: If the grey scale adjustment is made after picture tube replacement, check the high voltage.

Service Adjustments

Red Bias

Red Bias +

Green Bias

Blue Bias +

Red Drive +

Green Drive

Blue Drive +

Green Bias +

Blue Bias

Press the MENU button to exit from

service mode

Red Drive

Green Drive +

Blue Drive

SCREEN VR

(Under side)

MAIN BOARD

-14-

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Service Adjustments

-14-

Service Adjustment-2 (MTS Adjustment)

1. Enter the Service Menu

While pressing the MENU button on the televi-

sion, press the Number Key 3 on the remote control

unit. The Service Menu now appear.

[ MTS Adjustment Mode ]

INPUT LEVEL 08

HI SEPARATION 21

LOW SEPARATION 34

ADJUST: - /+

CHOOSE: ▲▼

EXIT : MENU

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.

[ Entering the Service Menu ]

[ Service Adjustment ]

[ Exit from the Service Menu ]

йȉǯǋǊÎࠔÏǯǞǌțശ

VOLUME +

VOLUME

CHANNEL UP

CHANNEL DOWN

-15-

Service Adjustments

-15-

INPUT LEVEL 08

HI SEPARATION 21

LOW SEPARATION 34

ADJUST: - /+

CHOOSE: ▲▼

EXIT : MENU

SOUND LEVEL ADJUSTMENT

1. Connect a signal to the antenna terminal with audio signal

of 1KHz at 100% modulated.

2. Connect a DC Volt-Meter to TP-317 ( pin-38 of IC3401)

and the ground.

3. Switch the TV set on, and set the Surround OFF.

Press and hold the MENU button on the TV set, and

press “3” button on the remote control transmitter to enter

to the service mode.

5. Adjust voltage to become DC 400mVrms±20mVrms at

TP317 by pressing the VOLUME(+/-) button on the remote

control or TV set.

6. To exit from the service mode, press the MENU button.

STEREO SEPARATION ADJUSTMENT

1. Connect an oscilloscope:

Probe-A to TP-317 (pin-38 of IC3401) and the ground.

Probe-B to TP-318 (pin-39 of IC3401) and the ground.

Turn on the TV set, and receive the multi sound programme.

3. Press and hold the MENU button on the TV set, and press

“3” button on the remote control transmitter to enter the

service mode.

4. Select “LOW SEPARATION” by pressing the CHANNEL

UP/DOWN button on the remote control or TV set.

TP-317

(pin-38 of IC3401)

MAIN BOARD

(Solder side)

TP-318 (pin-39 of IC3401)

INPUT LEVEL 08

HI SEPARATION 21

LOW SEPARATION 34

ADJUST: - /+

CHOOSE: ▲▼

EXIT : MENU

5. Adjust the level of 300Hz at TP-317 (pin-38 of IC3401)

to become minimum level by pressing the VOLUME(+/ -)

button on the remote control or TV set.

Minimum leakage

TP-317(R)

300Hz

TP-317

(pin-38 of IC3401)

MAIN BOARD

(Solder side)

IC3401

-16-

Service Adjustments

-16-

To return to normal TV mode, press the MENU button on

the TV set or remote control handset. (Or will automati-

cally return to normal TV mode after 5 seconds.)

FINE TUNING

Fine tuning service mode

Fine tuning data value will be automatically stored in memory.

Service Adjustment-3

FINE TUNING

This adjustment is used to do a fine tuning of the channels with poor reception after they have been stored by the

automatic tuning.

This function is available for one channel only and the fine-tuned channel is memorized into IC802 (EEPROM).

1. Enter the Service Menu

While pressing the MENU button on the television,

press the “4” or MENU button on the remote control

unit. The Service Menu now appear.

2. Service Adjustments:

Press and hold the VOLUME + or VOLUME

button

on the remote control handset or TV set to make fine

tuning adjustment. Press and hold the VOLUME +

button for higher frequency tuning, and press and hold

the VOLUME

for lower frequency tuning.

[ Entering the Service Menu ]

[ Exit from the Service Menu ]

[ Service Adjustment ]

6. Select “HI SEPARATION” by pressing the CHANNEL

UP/DOWN button on the remote control or TV set.

7. Adjust the level of 4KHz at TP-318 (pin-39 of IC3401)

to become minimum level by pressing the VOLUME (+/-)

button on the remote control or TV set.

8. To exit from the service mode, press the MENU button.

TP-318 (L) Minimum leakage

4KHz

INPUT LEVEL 08

HI SEPARATION 21

LOW SEPARATION 34

ADJUST: - /+

CHOOSE: ▲▼

EXIT : MENU

йȉǯǋǊÎࠔÏǯǞǌțശ

VOLUME +

VOLUME

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