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AV-14F1P

No. 56084

3

SAFETY PRECAUTIONS

8.

When service is required, observe the original lead dress. Ex-
tra precaution should be given to assure correct lead dress in
the high voltage circuit area. Where a short circuit has occurred,
those components that indicate evidence of overheating should
be replaced. Always use the manufacturer's replacement com-
ponents.

9.

Isolation Check
(Safety for Electrical Shock Hazard)
After re-assembling the product, always perform an isolation
check on the exposed metal parts of the cabinet (antenna ter-
minals, video/audio input and output terminals, Control knobs,
metal cabinet, screw heads, earphone jack, control shafts, etc.)
to be sure the product is safe to operate without danger of elec-
trical shock.

(1) Dielectric Strength Test

The isolation between the AC primary circuit and all metal parts
exposed to the user, particularly any exposed metal part hav-
ing a return path to the chassis should withstand a voltage of
3000V AC (r.m.s.) for a period of one second.
(. . . . Withstand a voltage of 1100V AC (r.m.s.) to an appliance
rated up to 120V, and 3000V AC (r.m.s.) to an appliance rated
200V or more, for a period of one second.)
This method of test requires a test equipment not generally
found in the service trade.

(2) Leakage Current Check

Plug the AC line cord directly into the AC outlet (do not use a
line isolation transformer during this check.). Using a "Leakage
Current Tester", measure the leakage current from each ex-
posed metal part of the cabinet, particularly any exposed metal
part having a return path to the chassis, to a known good earth
ground (water pipe, etc.). Any leakage current must not exceed
0.5mA AC (r.m.s.).
However, in tropical area, this must not exceed 0.2mA AC
(r.m.s.).

 Alternate Check Method

Plug the AC line cord directly into the AC outlet (do not use a
line isolation transformer during this check.). Use an AC volt-
meter having 1000 ohms per volt or more sensitivity in the fol-
lowing manner. Connect a 1500

 10W resistor paralleled by a

0.15

µ

F AC-type capacitor between an exposed metal part and

a known good earth ground (water pipe, etc.). Measure the AC
voltage across the resistor with the AC voltmeter. Move the
resistor connection to each exposed metal part, particularly any
exposed metal part having a return path to the chassis, and
measure the AC voltage across the resistor. Now, reverse the
plug in the AC outlet and repeat each measurement. Any volt-
age measured must not exceed 0.75V AC (r.m.s.).  This corre-
sponds to 0.5mA AC (r.m.s.).
However, in tropical area, this must not exceed 0.3V AC (r.m.s.).
This corresponds to 0.2mA AC (r.m.s.).

1.

The design of this product contains special hardware, many
circuits and components specially for safety purposes. For con-
tinued protection, no changes should be made to the original
design unless authorized in writing by the manufacturer. Re-
placement parts must be identical to those used in the 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 have spe-
cial safety-related characteristics. These characteristics are of-
ten not evident from visual inspection nor can the protection
afforded by them necessarily be obtained by using replace-
ment components rated for higher voltage, wattage, etc. Re-
placement parts which have these special safety characteris-
tics are identified in the parts list of Service manual. Electrical
components having such features are identified by shad-
ing on the schematics and by (

!

) on the parts list in Ser-

vice manual. The use of a substitute replacement which does
not have the same safety characteristics as the recommended
replacement part shown in the parts list of Service manual may
cause shock, fire, or other hazards.

4.

Don't short between the LIVE side ground and ISOLATED
(NEUTRAL) side ground or EARTH side ground when re-
pairing.
Some model's power circuit is partly different in the GND. The
difference of the GND is shown by the LIVE : (

#

) side GND,

the ISOLATED (NEUTRAL) : (

"

) side GND and EARTH : (

$

)

side GND. Don't short between the LIVE side GND and ISO-
LATED (NEUTRAL) side GND or EARTH side GND and never
measure with a measuring apparatus (oscilloscope etc.) the
LIVE side GND and ISOLATED (NEUTRAL) side GND or
EARTH side GND at the same time.
If above note will not be kept, a fuse or any parts will be bro-
ken.

5.

If any repair has been made to the chassis, it is recommended
that the B1 setting should be checked or adjusted (See AD-
JUSTMENT OF B1 POWER SUPPLY).

6.

The high voltage applied to the picture tube must conform with
that specified in Service manual. Excessive high voltage can
cause an increase in X-Ray emission, arcing and possible com-
ponent damage, therefore operation under excessive high volt-
age conditions should be kept to a minimum, or should be pre-
vented. If severe arcing occurs, remove the AC power immedi-
ately and determine the cause by visual inspection (incorrect
installation, cracked or melted high voltage harness, poor sol-
dering, etc.). To maintain the proper minimum level of soft X-
Ray emission, components in the high voltage circuitry includ-
ing the picture tube must be the exact replacements or alterna-
tives approved by the manufacturer of the complete product.

7.

Do not check high voltage by drawing an arc. Use a high volt-
age meter or a high voltage probe with a VTVM. Discharge the
picture tube before attempting meter connection, by connect-
ing a clip lead to the ground frame and connecting the other
end of the lead through a 10k

 2W resistor to the anode but-

ton.

AC VOLTMETER
(HAVING 1000

/V,

OR MORE SENSITIVITY)

PLACE THIS PROBE
ON EACH EXPOSED
METAL PART

1500

 10W

0.15

µ

F AC-TYPE

GOOD EARTH GROUND

Summary of Contents for AV-14F1P(PH)

Page 1: ... 4 OPERATING INSTRUCTIONS APPENDED 1 1 SPECIFIC SERVICE INSTRUCTIONS 4 SERVICE ADJUSTMENTS 10 STANDARD CIRCUIT DIAGRAM APPENDED 2 1 PARTS LIST 27 BASIC CHASSIS GA2 AV 14F1P COPYRIGHT 2000 VICTOR COMPANY OF JAPAN LTD No 56084 Sep 2000 SERVICE MANUAL COLOR TELEVISION AV 14F1P PH ...

Page 2: ...y VIF Carrier 45 75MHz SIF 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 42W Picture Tube Visible size 34cm measured diagonally High Voltage 22 5kV 1kV at zero beam current Speaker 5cm 9 cm Oval type 2 Audio Output 2...

Page 3: ...ical to those used in the 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 mechanic...

Page 4: ... you can easily check its back side CAUTION When erecting 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 wire...

Page 5: ...AV 14F1P No 56084 5 5 2 2 2 CRT SOCKET PWB Within MAIN PWB MAIN PWB SPEAKER REAR COVER A B D D SPEAKER FRONT CABINET C ...

Page 6: ...TANT 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...

Page 7: ...ontents Setting value VIDEO 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 BRIGH...

Page 8: ...I 10 EXT COL 11 EXT TINT 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 ...

Page 9: ...sistors diodes variable 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 patt...

Page 10: ... adjustment 7 Preparation 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...

Page 11: ... 1 4 key Press to select 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 VC...

Page 12: ...BY IT TINT G DRIVE COLOR 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 M...

Page 13: ...04 IC701 MENU F901 PW TU001 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 ...

Page 14: ... mode and TV mode are linked 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 giv...

Page 15: ...63 023 2 OSD VP 000 015 012 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 ...

Page 16: ... menu screen VCO CW from 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 yel...

Page 17: ...if necessary 60Hz 1 Receive 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 ...

Page 18: ...control unit to produce 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 pro...

Page 19: ...e make fine adjustment until 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 t...

Page 20: ...nal 75 white 2 In the sub 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 8V 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 an...

Page 21: ...Cy Y W G B Measuring Item 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...

Page 22: ...rom the X connector 6 Plug 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 15 0kΩ or less in parallel with R562 the voltage at point A is increased D562...

Page 23: ...a green raster signal from 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...

Page 24: ...ta red blue 3 Using 6 pole 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...

Page 25: ...ver current for speaker 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 t...

Page 26: ...AV 14F1P No 56084 26 ...

Page 27: ...AV 14F1P No 56084 36 CTH 0009 CRT AV14F1PPH SK 3 VICTOR COMPANY OF JAPAN LIMITED TELEVISION RECEIVER DIVISION 1106 Heta Iwai city Ibaraki prefecture 306 0698 Japan ...

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