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AV-21F1P

No. 56033

6

REPLACEMENT OF MEMORY IC

1.

MEMORY IC

This TV uses the following memory IC.

Memory IC: IC1704 on MAIN PW Board

The memory IC memorizes data for correctly operating the
video and deflection circuits. When replacing the memory IC,
be sure to use the same type IC written with the initial values
of data. In other words, use the specific IC listed in "PRINTED
WIRING BOARD PARTS LIST". For its mounting location, re-
fer to "ADJUSTMENT LOCATIONS".

2.

PROCEDURE FOR REPLACING MEMORY IC

(1) Power off

Switch the power off and unplug the power cord from the
wall outlet.

(2) Replacing the memory IC

Replace the memory IC with new one. Be sure to use the
memory IC written with the initial data values.

(3) Power on

Plug the power cord into the wall outlet and switch the
power on.

(4) Check and setting of SYSTEM CONSTANT SET:

1) Press the DISPLAY key and the VIDEO STATU key on

the remote control unit simultaneously.
The SERVICE MENU screen will be displayed. (See
Fig. 1.)

2) In the SERVICE MENU, again press the DISPLAY key

and the VIDEO STATU key simultaneously. Then, the
SYSTEM CONSTANT SET screen will be displayed.
(See Fig. 2.)

3) Check whether the setting values of the SYSTEM CON-

STANT SET are the same as those indicated in Table
1. If the value is different, select the setting item with
the MENU

1

/

4

key, and set the correct value with the

MENU

2

/

3

key.

(The selected value will be stored in memory when the
MENU

2

/

3

key is released.)

4) Press the EXIT key twice to return to the normal screen.

NAME OF REMOTE CONTROL KEYS

Fig. 1

SERVICE MENU

SELECT BY
OPERATE BY

EXIT BY

IT

PICTURE
VIDEO STATUS

OTHERS

LOW LIGHT

HIGH LIGHT

RF AFC CHK
VCO (CW)

I2C BUS CTRL

EXIT

Fig. 2

SYSTEM CONSTANT

SELECT BY
OPERATE BY

EXIT BY

IT

VIDEO

:

1

AUDIO

:

MONO

VARI. OUT

:

NO

GAME

:

YES

CINEMA

:

YES

EXIT

SYSTEM CONSTANT

CCD

:

YES

:

YES

SURROUND

:

NO

✽✽✽✽✽✽✽✽ ✽✽✽✽✽

SYSTEM CONSTANT-

I

SYSTEM CONSTANT-

II

SELECT BY
OPERATE BY

EXIT BY

IT

EXIT

+

−

POWER

DISPLAY

VIDEO

STATUS

COLOUR

SYSTEM

EXIT

1

4

5

6

2

3

7

8

100+

9

MENU

CHANNEL

VOLUME

MENU

MENU

MENU

DISPLAY

MENU

TV/VIDEO

CLOSED

CAPTION

SLEEP
TIMER

MUTING

VIDEO STATUS

EXIT

0

PICTURE

BOOSTER

(5) Receive channel setting

Refer to the OPERATING INSTRUCTIONS and set the
receive channels (channels preset).

(6) User settings

Check the user setting items in Tables 2-1 and 2-2, and if
setting value is different, set the correct value.
For setting, refer to the OPERATING INSTRUCTIONS.

(7) Setting of SERVICE MENU

Verify the setting for each setting item in the SERVICE
MENU. (See Table 3.) If readjustment is necessary, per-
form adjustment referring to "SERVICE ADJUSTMENTS".

This Manual: http://www.manuallib.com/file/2595095

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Содержание AV-21F1P

Страница 1: ...m ManualLib com ManualLib com collects and classifies the global product instrunction manuals to help users access anytime and anywhere helping users make better use of products Home http www manuallib com Chinese http www shuomingshuku com This Manual http www manuallib com file 2595095 ...

Страница 2: ...S APPENDED 1 1 SPECIFIC SERVICE INSTRUCTIONS 4 SERVICE ADJUSTMENTS 10 STANDARD CIRCUIT DIAGRAM APPENDED 2 1 PARTS LIST 27 BASIC CHASSIS GA2 AV 21F1P COPYRIGHT 2000 VICTOR COMPANY OF JAPAN LTD No 56033 Jul 2000 SERVICE MANUAL COLOR TELEVISION AV 21F1P PH This Manual http www manuallib com file 2595095 ...

Страница 3: ...F Carrier 41 25MHz 4 5MHz Color Sub Carrier Frequency NTSC 3 579545MHz PAL M 3 57561149MHz PAL N 3 58205625MHz Aerial Input Terminal 75Ω Unbalanced Power Input Rating AC110 240V 50 60Hz Operating AC90 260V 50 60Hz Power Consumption 66W Picture Tube Visible size 51cm measured diagonally High Voltage 26 5kV 1kV at zero beam current Speaker 6cm 12 cm Oval type 2 Audio Output 2W Monaural Input Video 1...

Страница 4: ...e original circuits Service should be performed by qualified personnel only 2 Alterations of the design or circuitry of the products should not be made Any design alterations or additions will void the manufacturer s warranty and will further relieve the manufac turer of responsibility for personal injury or property damage resulting therefrom 3 Many electrical and mechanical parts in the products...

Страница 5: ...ting the Main PW Board be careful so that there will be no contacting with other PW Board Before turning on power make sure that all connectors are prop erly connected WIRE CLAMPING AND CABLE TYING 1 Be sure to clamp the wire 2 Never remove the cable tie used for tying the wires together Should it be inadvertently removed be sure to tie the wires with a new cable tie FEATURES New chassis design en...

Страница 6: ...AV 21F1P No 56033 5 DY01 CRT SOCKET PWB Within MAIN PWB 19 18 MAIN PWB SPEAKER REAR COVER A B C C SPEAKER FRONT CABINET 6 2 2 2 This Manual http www manuallib com file 2595095 ...

Страница 7: ... those indicated in Table 1 If the value is different select the setting item with the MENU 1 4 key and set the correct value with the MENU 2 3 key The selected value will be stored in memory when the MENU 2 3 key is released 4 Press the EXIT key twice to return to the normal screen NAME OF REMOTE CONTROL KEYS Fig 1 SERVICE MENU SELECT BY OPERATE BY EXIT BY IT PICTURE VIDEO STATUS OTHERS LOW LIGHT...

Страница 8: ...DEO 1 AUDIO MONO VARI OUT NO GAME YES CINEMA YES CCD YES RETURN YES SURROUND NO SETTING OF SYSTEM CONSTANT SET Table 1 1 2 MONO PH MONO MTS YES NO YES NO YES NO YES NO YES NO YES NO Setting of Menu Table 2 2 Setting item Setting value Setting item Setting value TINT CENTER SET LOCK CODE Unnecessary to set COLOR CENTER CHILD LOCK OFF PICTURE CENTER AUTO TUNER SETUP AIR BRIGHT CENTER NOISE MUTING OF...

Страница 9: ... 12 EXT DTL 13 P N KILL 14 Y S CONT 15 TV Y DL 16 EXT Y DL 17 WPL SW 18 Y GAMMA 19 P N G P 20 COL L SW 21 COL LMT 22 PN C ATT 23 OFST SW 24 OFST B Y 25 OFST R Y 26 C TOF SW 27 TV T FO 28 TV T Q 29 EXT T FO 30 EXT T Q 31 C TRAP 32 C TR FO 33 C TRAP Q 34 FIX B W 35 APA P FO 36 DC TRAN 37 B ST SW 38 B ST PO 39 ABL GAIN 40 ABL PO 41 HALF T 42 DRV G SW 43 NT COMB 44 COIN DET 45 NOISE L 46 VCD MODE 47 V...

Страница 10: ...resistors etc 1 Apply extra solder to each lead 2 As shown in the figure while pushing the chip part with twee zers alternately melt the solder at its each lead Then shift and remove the chip part Note After removing the part remove remaining solder from the pattern REPLACEMENT OF CHIP COMPONENT 2 How to install Chip parts Resistors capacitors etc 1 Apply solder to the pattern as indicated in the ...

Страница 11: ...n for adjustment presetting Unless otherwise specified in the adjustment items preset the following functions with the remote control unit BASIC OPERATION IN SERVICE MENU 1 TOOL OF SERVICE MENU OPERATION Operate the SERVICE MENU with the remote control unit 2 SERVICE MENU ITEMS With the SERVICE MENU various settings adjustments can be made and they are broadly classified in the following items of ...

Страница 12: ... an item in the Sub Menu 2 3 key Press to select the value of the selected item EXIT key Press to return to the previous screen VIDEO STATUS key In the VIDEO STATUS sub menu screen press to switch between VIDEO STA TUS GAME and VIDEO STATUS CINEMA 2 LOW LIGHT HIGH LIGHT Setting will be done by using the numeral key on the re mote control unit 3 RF AFC CHK Do not adjust 4 VCO CW Setting will be don...

Страница 13: ... B DRIVE PICTURE R CUT BRIGHT G CUT DETAIL B CUT EXIT GAME SELECT BY OPERATE BY EXIT BY IT TINT G DRIVE COLOR B DRIVE PICTURE R CUT BRIGHT G CUT DETAIL B CUT EXIT BRIGHT BRIGHT EXIT BY IT EXIT SELECT BY OPERATE BY EXIT BY IT 1 PICTURE EXIT SELECT BY OPERATE BY EXIT BY IT 1 OSD HP EXIT SERVICE MENU MAIN MENU SCREEN A SUB MENU PICTURE SUB MENU HIGH LIGHT SUB MENU OTHERS SUB MENU RF AFC CHK SUB MENU ...

Страница 14: ...001 POWER SW S901 DEG HVT UPPER FOCUS LOWER SCREEN REMOCON RECEIVER POWER ON TIMER VOL CH T FRONT MAIN PWB CRT SOCKET PWB SOLDER SIDE 1 Pin TP 91 B1 2 Pin NC 3 Pin TP E 1 3 IC201 VCO T111 C X 1 3 TP E E1 TP 47B T U CRT EARTH BRAIDED ASS Y TOP This Manual http www manuallib com file 2595095 ...

Страница 15: ...nked each other Video mode 8 EXT PIC 9 EXT BRI 10 EXT COL and 11 EXT TINT TV mode 1 PICTURE 2 BRIGHT 5 COL NTSC and 6 TINT When the setting items in the TV mode are adjusted the same values will be set to the linking items in the video mode For example if the value of 1 PICTURE is changed the value of 8 EXT PIC will also be changed accordingly The initial setting values given in are offset values ...

Страница 16: ...012 3 H CK SW 000 001 000 Setting item Variable range Initial setting value R CUTOFF 000 255 020 G CUTOFF 000 255 020 B CUTOFF 000 255 020 LOW LIGHT Setting item Variable range Initial setting value G DRIVE 000 255 128 B DRIVE 000 255 128 HIGH LIGHT Do not adjust Do not adjust Do not adjust Setting item Variable range Initial setting value RF AFC ON OFF ON FINE 77 77 xx RF AFC CHK Do not adjust Se...

Страница 17: ... the SERVICE MENU More specifically in the SERVICE MENU press the MENU 1 4 key to select VCO CW and then press the MENU 2 3 key to enter the sub menu screen VCO CW 3 Confirm that the color of TOO HIGH and TOO LOW changes in yellow as you turn the CW TRANSF At this time check that SYNC YES appears on the screen 4 Slowly turn the CW TRANSF until BELOW REFERENCE changes to yellow Also at this time ch...

Страница 18: ...ive a cross hatch signal NTSC or PAL M 2 Select the sub menu screen PICTURE from the SERVICE MENU 3 Select 54 H POS 60 with the MENU 1 4 key 4 Confirm the initial setting value of 54 H POS 60 5 Adjust 54 H POS 60 so that the screen will be horizontally cen tered with the MENU 2 3 key 50Hz 1 Receive a cross hatch signal PAL N 2 In the sub menu screen PICTURE select 48 H POS 50 with the MENU 1 4 key...

Страница 19: ...a single horizontal line 5 Turn the SCREEN VR fully counterclockwise then slowly turn it clockwise to where a red blue or green color is faintly vis ible 6 Use keys 4 9 on the remote control unit and adjust the other 2 colors to where the single horizontal line becomes white 7 Turn the SCREEN VR to where the single horizontal line glows faintly 8 Press the 2 key to stop producing a single horizont...

Страница 20: ...ntil you get the best contrast with the MENU 2 3 key Method of adjustment without measuring instrument PAL M COLOR 1 Receive a PAL M broadcast 2 Select the sub menu screen PICTURE from the SERVICE MENU 3 Select 3 COL PALM with the MENU 1 4 key and confirm its initial setting value 4 If the color is not the best with the initial set value make fine adjustment until you get the best color with the M...

Страница 21: ... menu screen PICTURE select 4 COL PALN with the MENU 1 4 key and confirm its initial setting value 3 Connect the oscilloscope between TP 47B and TP E 4 Adjust 4 COL PALN to set the value A in the figure to 10V W B with the MENU 2 3 key NTSC COLOR 1 Receive a NTSC full field color bar signal 75 white 2 In the sub menu screen PICTURE select 5 COL NTSC with the MENU 1 4 key and confirm its initial se...

Страница 22: ...m Test point Adjustment part instrument Setting Remote TINT of control unit COLOR VIDEO PICTURE STATUS BRIGHT DETAIL G DRIVE B DRIVE R CUT G CUT B CUT Description NOTE Do not adjust Each value should be set to the initial value 1 Select the sub menu screen VIDEO STATUS CINEMA from the SERVICE MENU 2 Select TINT B CUT with the MENU 1 4 key and reset each value to the initial setting value on page 1...

Страница 23: ...ug the AC power cord and make sure that the picture ap pears normally X Ray Protector Operation Normally the voltage at point A does not exceed the Zener volt age of D562 The voltage at point A will be determined by divid ing the voltage from HVT FBT by R562 and R563 When you connect a resistor of 17 2kΩ or less in parallel with R562 the voltage at point A is increased D562 turns ON and the X ray ...

Страница 24: ...om the signal generator and turn the screen to green raster 5 Move the deflection yoke backward 6 Bring the long lug of the purity magnets on the short lug and position them horizontally Fig 2 7 Adjust the gap between two lugs so that the green raster will come into the center of the screen Fig 3 8 Move the deflection yoke forward and fix the position of the deflection yoke so that the whole scree...

Страница 25: ...le convergence magnets overlap the magenta red blue and green lines in the center of the screen to turn them to white 4 Repeat 2 and 3 above and make best convergence DYNAMIC CONVERGENCE ADJUSTMENT 1 Move the deflection yoke up and down and overlap the lines in the periphery Fig 2 2 Move the deflection yoke left to right and overlap the lines in the periphery Fig 3 3 Repeat 1 and 2 above and make ...

Страница 26: ...drive is detected Operation of CRT NECK protec tion circuit Operation of X ray protection cir cuit Method of detection The microcomputer detects the possible abnormality at 1 sec intervals If NG state is detected for more than 1 ms the microcomputer judges that there is an abnormal ity DITTO DITTO State of abnormality When an abnormality has been detected the SUB POWER is turned off While the SUB ...

Страница 27: ...age V Electrolytic Capacitors 47 50 Example Capacitance value µF withstand voltage V Type No indication Ceramic capacitor MY Mylar capacitor MM Metalized mylar capacitor PP Polypropylene capacitor MPP Metalized polypropylene capacitor MF Metalized film capacitor TF Thin film capacitor BP Bipolar electrolytic capacitor TAN Tantalum capacitor 3 Coils No unit µH Others As specified 4 Power Supply B1 ...

Страница 28: ... IC CHIP IC TOP VIEW CHIP TR FRONT VIEW BOTTOM VIEW TRANSISTOR E C B B G C D E S C B E N N N 1 N 1 N SEMICONDUCTOR SHAPES CONTENTS SEMICONDUCTOR SHAPES 2 4 BLOCK DIAGRAM 2 5 CIRCUIT DIAGRAMS MAIN PWB CIRCUIT DIAGRAM Including CRT SOCKET PWB 2 7 PATTERN DIAGRAMS MAIN PWB PATTERN 2 11 CRT SOCKET PWB PATTERN 2 13 ...

Страница 29: ...OUT F901 POWER SW Q351 Q353 RESET 5V REG RESET SF101 CF131 SAW FILTER 4 5MHz TRAP IF AMP VIF IN VIF IN RF AGC OUT V OUT TV M IC101 IF 18 FM OUT 10 Q131 BUFFER 13 16 SIF OUT 11 SIF IN 4 5MHz FILTER VCO CW VCO 15 VCO CF161 SIF AMP Q161 T111 25 30 32 SEL1 2 IC704 IC702 MEMORY STB 12V RF AFC IC401 AUDIO 7 2 L H 4 IC651 AUDIO SW AUDIO REAR IN VIDEO AUDIO 1 4 4 53 14 13 12 R G B Q941 STB 12V A VCC 4 2 8...

Страница 30: ...No 56033 2 7 No 56033 2 8 AV 21F1P AV 21F1P DIAGRAMS MAIN PWB CIRCUIT DIAGRAM 1 2 A H2 AV 21F1P PH This Manual http www manuallib com file 2595095 ...

Страница 31: ...No 56033 No 56033 2 6 2 5 AV 21F1P AV 21F1P 2 10 2 9 PWB CIRCUIT DIAGRAM 2 2 SGA 1047A H2 AV 21F1P PH WITHIN MAIN PWB This Manual http www manuallib com file 2595095 ...

Страница 32: ... Resistor MF CAP Metalized Film Capacitor MF R Metal Film Resistor MM CAP Metalized Mylar Capacitor MG R Metal Glazed Resistor MP CAP Metalized Polystyrol Capacitor MP R Metal Plate Resistor PP CAP Polypropylene Capacitor OM R Metal Oxide Film Resistor PS CAP Polystyrol Capacitor CMF R Coating Metal Film Resistor TF CAP Thin Film Capacitor UNF R Non Flammable Resistor MPP CAP Metalized Polypropyle...

Страница 33: ... 3 LC30617 001C H E E WINDOW 4 LC30616 004A H POWER KNOB 5 CM35235 006 H SPRING 6 LC20292 004A H CONTROL KNOB 7 LC30618 001A H LED LENS 8 A48457 4 S SPRING 9 CHGB0016 0B GS BRAIDED ASSY 10 CM36623 B01 H CHASSIS RAIL 2 11 QAS0036 001 SPEAKER 2 SP01 12 CM47005 A01 H CORD CLAMP 13 QMPR010 200 E2 POWER CORD or QMPR010 200 K2 14 LC10448 003A HK REAR COVER 15 GG20003 006A H RATING LABEL 16 QYSBSF3010Z T...

Страница 34: ...No 56033 29 AV 21F1P EXPLODED VIEW 15 17 16 13 12 T1522 11 11 8 L01 9 DY01 14 V01 CRT SOCKET PWB Within MAIN PWB 10 10 19 18 MAIN PWB 1 6 7 2 3 4 5 This Manual http www manuallib com file 2595095 ...

Страница 35: ...Z C R 1 5kΩ 1 2W K R1362 QRZ0107 152Z C R 1 5kΩ 1 2W K R1363 QRL029J 123 OM R 12kΩ 2W J R1364 QRL029J 123 OM R 12kΩ 2W J R1365 QRL029J 123 OM R 12kΩ 2W J R1366 NRSA02J 272X CH MG R 2 7kΩ 1 10W J R1367 NRSA02J 272X CH MG R 2 7kΩ 1 10W J RESISTOR R1368 NRSA02J 272X CH MG R 2 7kΩ 1 10W J R1401 NRSA02J 103X CH MG R 10kΩ 1 10W J R1402 NRSA02J 682X CH MG R 6 8kΩ 1 10W J R1403 NRSA02J 0R0X CH MG R 0 0Ω 1...

Страница 36: ... C R 3 3kΩ 1 2W J R1932 QRE121J 4R7Y C R 4 7Ω 1 2W J R1942 NRSA02J 223X CH MG R 22kΩ 1 10W J R1943 QRE121J 152Y C R 1 5kΩ 1 2W J R1944 NRSA02J 103X CH MG R 10kΩ 1 10W J R1945 NRSA02J 332X CH MG R 3 3kΩ 1 10W J RESISTOR R1946 NRSA02J 123X CH MG R 12kΩ 1 10W J R1947 QRE121J 470Y C R 47Ω 1 2W J R1948 NRSA02J 152X CH MG R 1 5kΩ 1 10W J R1949 NRSA02J 153X CH MG R 15kΩ 1 10W J R1950 NRSA02J 103X CH MG R...

Страница 37: ...J 151X CH C CAP 150pF 50V J C1712 NCB21HK 104X CH C CAP 0 1µF 50V K C1713 QETN1HM 105Z E CAP 1µF 50V M C1714 NDC21HJ 221X CH C CAP 220pF 50V J C1715 NCB21HK 102X CH C CAP 1000pF 50V K C1716 QENC1HM 474Z BP E CAP 0 47µF 50V M C1717 NDC21HJ 180X CH C CAP 18pF 50V J C1718 NDC21HJ 220X CH C CAP 22pF 50V J C1719 QETN1CM 107Z E CAP 100µF 16V M CAPACITOR C1720 NCB21HK 104X CH C CAP 0 1µF 50V K C1723 NDC2...

Страница 38: ...C4544 LB POWER TRANSISTOR Q1352 2SC4544 LB POWER TRANSISTOR Q1353 2SC4544 LB POWER TRANSISTOR Q1401 2SC2412K QR X CHIP TRANSISTOR Q1511 2SC2785 JH T SI TRANSISTOR TRANSISTOR Q1521 BSN304 T TRANSISTOR Q1522 2SD1878 YD PW TRANSISTOR H OUT Q1602 DTC323TK X DIGI TRANSISTOR Q1603 2SA1037AK QR X SI TRANSISTOR Q1606 2SA1037AK QR X SI TRANSISTOR Q1607 2SC2412K QR X CHIP TRANSISTOR Q1608 2SC2412K QR X CHIP...

Страница 39: ...OL S1703 QSW0619 003Z PUSH SWITCH CH S1704 QSW0619 003Z PUSH SWITCH CH S1705 QSW0619 003Z PUSH SWITCH MENU S1901 QSP4K21 C01 PUSH SWITCH POWER SF1101 QAX0324 002 SAW FILTER SK1351 CE42535 001J1 CRT SOCKET TH1901 QAD0101 9R0 P THERMISTOR TU1001 QAU0190 001 TUNER VA1901 ERZV10V621CS VARISTOR X1301 QAX0305 001Z X TAL X1701 QAX0468 001Z X TAL This Manual http www manuallib com file 2595095 ...

Страница 40: ...CP30967 003 H POLY BAG 4 RM C372 1H REMOCON UNIT 5 CP30966 001 H POLY BAG 6 LCT0808 001A H INST BOOK 7 CP30902 040 R POS SERIAL LABEL PACKING PARTS LIST PACKING 4 2 1 2 5 6 3 7 REMOTE CONTROL UNIT PARTS LIST RM C372 1H Ref No Part No Part Name Description Local 3139 224 20073 BATTERY COVER This Manual http www manuallib com file 2595095 ...

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