JVC AV-1434EE, AV-1434TEE, AV-14F10, AV-14FR10, AV-14FTG2/-A Service Manual

AV-14FR10/AV-14F10

AV-1434TEE/AV-1434EE

AV-14FTT2/AV-14FTG2

SERVICE MANUAL

COLOUR TELEVISION

AV-14FR10/AV-14F10 AV-1434TEE/AV-1434EE AV-14FTT2/AV-14FTG2/-A

BASIC CHASSIS

CG

[ RM-C90 ] [ RM-C364GY ]

CONTENTS

!SPECIFICATIONS 2

!SAFETY PRECAUTIONS 3

!FEATURES 4

!MAIN DIFFERENCE LIST 5

!FUNCTIONS 6

!SPECIFIC SERVICE INSTRUCTIONS 8

!SERVICE ADJUSTMENTS 15

!PARTS LIST 33

OPERATING INSTRUCTIONS

STANDARD CIRCUIT DIAGRAM 2-1

1	COPYRIGHT © 2001 VICTOR COMPANY OF JAPAN, LTD.	No.51865
		Nov..2001

AV-14FR10/AV-14F10

AV-1434TEE/AV-1434EE

AV-14FTT2/AV-14FTG2

SPECIFICATIONS

	ITEM	CONTENT
		AV-14FR10 / AV-1434TEE / AV-14FTT2	AV-14F10 / AV-1434EE / AV-14FTG2/-A
	Dimensions(W×H×D)	462mm×340.5mm×375mm
	Mass	10kg
	TV RF System	B/G, I, D/K, K1,
	RF Mode	PAL / SECAM
	Colour System
	VIDEO Mode	PAL / SECAM / NTSC3.58 / NTSC4.43
	Teletext System	FLOF (UK system )	×
		WST (world standard system)
	Picture Tube	Visible size: 34cm measured diagonally
	High Voltage	22.5kV±1.5kV(at zero beam current)
	Receiving Frequency VHF (VL)	43.75MHz 155.75MHz
	VHF (VH)	155.78MHz 466.25MHz

UHF 466.28MHz 864.75MHz

Cable TVs of Mid (X-Z, S1-S10)

CATV Super (S11-S20) & Hyper (S21-S41)

bands receivable

Intermediate	VIF Carrier	38.0MHz
		32.5MHz(5.5MHz)
Frequency
	SIF Carrier	31.5MHz (6.5MHz)
		32.0MHz (6.0MHz)
		PAL (4.43MHz),
Colour Sub Carrier Frequency		SECAM (4.40625MHz / 4.25MHz)
		NTSC (3.58MHz / 4.43MHz)
Power Input	Rated Voltage	AC220 240V, 50 / 60Hz
		AC110 240V, 50 / 60Hz	AC110 240V, 50 / 60Hz
		[ Only AV-14FTT2 ]	[ Only AV-14FTG2/-A ]
Power Consumption		68W (Max) / 47W(Avg.)
Speaker		5cm×9cm, Oval type×2
Audio Output		2W (monaural)
Aerial Input Terminal		75Ω Unbalanced
Input	Video	1V(p-p), 75Ω, RCA×2 (Front / Rear)
	Audio	500mV(rms) (-4dBs), High impedance,
		RCA×2 (Front / Rear)
Output	Video	1V(p-p), 75Ω, RCA×1
	Audio	500mV(rms) (-4dBs), Low impedance,
		RCA×1
Headphone jack		3.5mm mini jack
Remote Control Unit		RM-C90	RM-C364GY
		(Battery size : AA / R06 / UM-3×2)	(Battery size : AA / R06 / UN-3×2)

Design and specifications are subject to change without notice.

2

No. 51865

AV-14FR10/AV-14F10

AV-1434TEE/AV-1434EE

AV-14FTT2/AV-14FTG2

SAFETY PRECAUTIONS

1.The design of this product contains special hardware, many circuits and components specially for safety purposes. For continued protection, no changes should be made to the original design unless authorized in writing by the manufacturer. Replacement 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 manufacturer of responsibility for personal injury or property damage resulting therefrom.

3.Many electrical and mechanical parts in the products have special safety-related characteristics. These characteristics are often not evident from visual inspection nor can the protection afforded by them necessarily be obtained by using replacement components rated for higher voltage, wattage, etc. Replacement parts which have these special safety characteristics are identified in the parts list of Service manual. Electrical components having such features are identified by shading on the schematics and by (!) on the parts list in Service 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 repairing.

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 ISOLATED(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 broken.

5.If any repair has been made to the chassis, it is recommended that the B1 setting should be checked or adjusted (See ADJUSTMENT 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 component damage, therefore operation under excessive high voltage conditions should be kept to a minimum, or should be prevented. If severe arcing occurs, remove the AC power immediately and determine the cause by visual inspection (incorrect installation, cracked or melted high voltage harness, poor soldering, etc.). To maintain the proper minimum level of soft X-Ray emission, components in the high voltage circuitry including the picture tube must be the exact replacements or alternatives approved by the manufacturer of the complete product.

7.Do not check high voltage by drawing an arc. Use a high voltage meter or a high voltage probe with a VTVM. Discharge the picture tube before attempting meter connection, by connecting a clip lead to the ground frame and connecting the other end of the lead through a 10k! 2W resistor to the anode button.

8.When service is required, observe the original lead dress. Extra 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 components.

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 terminals, video/audio input and output terminals, Control knobs, metal cabinet, screwheads, earphone jack, control shafts, etc.) to be sure the product is safe to operate without danger of electrical 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 having 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 exposed 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 voltmeter having 1000 ohms per volt or more sensitivity in the following manner. Connect a 1500! 10W resistor paralleled by a 0.15"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 voltage measured must not exceed 0.75V AC (r.m.s.). This corresponds 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.).

	AC VOLTMETER
	(HAVING 1000 !/V,
	OR MORE SENSITIVITY)
0.15μF AC-TYPE
	PLACE THIS PROBE
1500 ! 10W	ON EACH EXPOSED
	METAL PART
GOOD EARTH GROUND

No.51865

3

AV-14FR10/AV-14F10

AV-1434TEE/AV-1434EE

AV-14FTT2/AV-14FTG2

FEATURES

!New chassis design enables use of an interactive on-screen control.

!Wide range voltage (110V 240V) AC power input (AV-14FTT2 / AV-14FTG2/-A)

!With AUDIO / VIDEO INPUT & OUTPUT terminal.

!MUTING button can reduce the audio level to zero instantly.

!Functional remote control to operate TV set (for channel select, volume control, power ON/OFF, etc.) from a distance.

!I2C bus control utilizes single chip ICs for IF, V/C, DEF. VSM PRESET, PRESET & TURBO TIMER.

!By means of AUTO PROGRAM, the TV stations can be selected automatically and the TV channels can also be rearranged automatically.

!The TELETEXT SYSTEM has a built-in FASTEXT / WST system (for AV-14FR10 / AV-1434TEE / AV-14FTT2)

!Built-in ECO MODE (ECONOMY, ECOLOGY)

In accordance with the brightness in a room, the brightness and / of contrast of the picture can be adjusted automatically to make the optimum picture which is easy on the eye.

! Built-in ON TIMER, RETURN + & CHILD LOCK.

SYSTEM BLOCK DIAGRAM

IC301

TU001

VIDEO/CHROMA

DECORDER

TUNER

IC702

MEMORY

IC701

SCL1/SDA1

SCL2/SDA2

MICRO

TCL/TDA

COMPUTER

IC821

TEXT DECORDER

(for AV-14FR10 / AV-1434TEE / AV-14FTT2)

4

No. 51865

AV-14FR10/AV-14F10

AV-1434TEE/AV-1434EE

AV-14FTT2/AV-14FTG2

MAIN DIFFERENCE LIST

!	Model Name	AV-14FR10	AV-1434TEE	AV-14FTT2
	Part Name
	MAIN PWB	SCG-1289A-H2		SCG-1290A-H2
!	FRONT CABINET	LC10831-013A-H	LC10831-018A-H	LC10831-017A-H
	PACKING CASE	GG10056-059A-H	GG10056-060A-H	GG10056-058A-H
	REMOTE CONTROL UNIT	RM-C90-1H
!	RATING LABEL	GG20014-002A-H	GG20014-005A-H	LC20377-001B-H
!	INST. BOOK	LCT1028-001A-H	LCT1029-001A-H	LCT0990-001B-H
!	DIGEST MANUAL			LCT0992-001B-H
!	POWER CORD	QMPR340-165-K2	QMP40D0-200J5
			or QMP40D0-200J3
!	Model Name	AV-14F10	AV-1434EE	AV-14FTG2/-A

Part Name

MAIN PWB

!FRONT CABINET PACKING CASE REMOTE CONTROL UNIT

!RATING LABEL

!INST. BOOK

!DIGEST MANUAL

!POWER CORD

SCG-1285A-H2	SCG-1286A-H2			SCG-1024A-H2
LC10831-014A-H	LC10831-015A-H			LC10831-012A-H
GG10056-047A-H	GG10056-045A-H			LC10845-027A-H
RM-C364GY-1H
GG20014-002A-H	GG20014-005A-H			LC20413-002B-H
LCT1039-001A-H	LCT1029-001A-H			LCT0994-001B-H
LCT1034-001A-H				LCT0993-001B-H
QMP40D0-200J5				QMPR010-200-E2
or QMP40D0-200J3				or QMPR010-200-K2

No. 51865

5

AV-14FR10/AV-14F10

AV-1434TEE/AV-1434EE

AV-14FTT2/AV-14FTG2

FUNCTIONS

■FRONT PANEL

■REAR PANEL

2

1

4

5

3

MENU buttons

CHANNEL / buttons

VOLUME / buttons

ECO sensor

REMOTE CONTROL sensor

ON TIMER lamp

POWER lamp

MAIN POWER button

A/V INPUT terminal

HEADPHONE jack

1ANT Terminal

2VIDEO INPUT Terminal

3VIDEO OUTPUT Terminal

4AUDIO INPUT Terminal

5AUDIO OUT PUT Terminal

6

No. 51865

AV-14FR10/AV-14F10

AV-1434TEE/AV-1434EE

AV-14FTT2/AV-14FTG2

■REMOTE CONTROL UNIT

RM-C90 : (AV-14FR10 / AV-1434TEE / AV-14FTT2)

1ECO SENSOR key

2COLOUR SYSTEM key

1

B

3SOUND SYSTEM key

2

C

4DISPLAY key

3

D

5TV/VIDEO key

4

6OFF TIMER key

E

7PICTURE MODE key

5

8CHANNEL SCAN key

9RETURN key

6

F

ACHANNEL / key

7

BPOWER key

8

G

CMUTING key

9

H

DTV/TEXT key

A

EMENU key

MENU ▲/▼ key

I

MENU / key

FNumber (CH.) key

G / key

HVOLUME / key

ITeletext key

RM-C364GY

: (AV-14F10 / AV-1434EE / AV-14FTG2/-A)

1ECO SENSOR key

2SOUND SYSTEM key

3COLOUR SYSTEM key

4TV/VIDEO key

5OFF TIMER key

6CHANNEL SCAN key

7RETURN key

8DISPLAY key

9CHANNEL / key

APOWER key

BPICTURE MODE key

CNumber (CH.) key

D / key

EMUTING key

FMENU key

MENU ▲/▼ key

MENU / key

GVOLUME / key

No. 51865

7

AV-14FR10/AV-14F10

AV-1434TEE/AV-1434EE

AV-14FTT2/AV-14FTG2

SPECIFIC SERVICE INSTRUCTIONS

DISASSEMBLY PROCEDURE

REMOVING THE REAR COVER

1.Unplug the power plug.

2.As shown in figure, remove the 5 screws marked ! and a screw marked ".

3.Withdraw the rear cover toward you.

REMOVING THE MAIN PW BOARD

!After removing the rear cover.

1.Slightly raise the both sides of the MAIN PW BOARD by hand and remove the PWB stopper marked #from the front cabinet.

2.Withdraw the MAIN PW BOARD backward.

(If necessary, take off the wire clamp, connectors etc.)

REMOVING THE SPEAKER

!After removing the rear cover.

1.As shown in figure, remove the 2 screws marked $.

2.Follow the same steps when removing the other hand speaker.

CHECKING THE MAIN PW BOARD

1.To check the back side of the PW Board.

1)Pull out the MAIN PW Board. (Refer to REMOVING THE MAIN PW Board)

2)Erect the PW Board vertically so that you can easily check the

back side of the PW Board. [CAUTION]

!When erecting the PW Board, be careful so that there will be no contacting with other PW Board.

!Before turning on power, make sure that the CRT earth wire and other connector are properly 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.

8

No. 51865

FRONT CABI.

POWER

CORD

AV-14FR10/AV-14F10

AV-1434TEE/AV-1434EE

AV-14FTT2/AV-14FTG2

SPEAKER

D (×2)

CRT SOCKET

PWB

MAIN PWB

C

REAR

COVER

B (×1)

A (×5)

No. 51865

9

AV-14FR10/AV-14F10

AV-1434TEE/AV-1434EE

AV-14FTT2/AV-14FTG2

REPLACEMENT OF MEMORY ICs

1. MEMORY ICs

This model uses memory ICs. This memory IC data are for proper operation of the video and deflection circuits. When replacing memory ICs, be sure to use ICs written with the initial values of data.

2.PROCEDURE FOR REPLACING MEMORY ICs

(1)Power off

Switch the power off and disconnect the power plug from the wall outlet.

(2)Replace ICs

Be sure to use memory ICs written with the initial data values.

(3)Power on

Connect the power plug into the wall outlet and switch the power on.

(4)Check and set SYSTEM CONSTANT SET

It must not adjust without adjustment signals.

1)Press the DISPLAY key and the PICTURE MODE key of the REMOTE CONTROL UNIT simultaneously.

2)The SERVICE MENU screen of Fig. 1 will be displayed.

3)While the SERVICE MENU is displayed, again press the DISPLAY key and PICTURE MODE key simultaneously, and the SYSTEM CONSTANT SET screen of Fig. 2 will be displayed.

4)Check the setting values of the SYSTEM CONSTANT SET of Table 1 If the value is different, select the setting item with the MENU ▼/▲key, and set the correct value with the MENU - / + key.

5)Press the DISPLAY key twice, and return to the normal screen.

(5)Receive channel of setting

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

(6)User Setting

Check the user setting value of Table 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 items of the SERVICE MENU, and reset where necessary. For setting, refer to the SERVICE ADJUSTMENTS.

NOTE

Although the key position of the RM-C90 remote control unit is different from that of the RM-C364 remote control unit, the functions of both units are the same So please use the attached diagram for the RM-C90 remote control unit for the RM-C364.

By the way, MENU -/+ Key functions in the same manner as for /key.

KEY ASSIGNMENT OF REMOTE CONTROL UNIT

							MENU
DISPLAY key
							▼/▲ key
MENU
/ key

				NUMBERS
PICTURE				key
MODE key

SERVICE MENU

1.IF	2.V/C
3.DEF	4.VSM PRESET
5.PRESET
6.TURBO TIMER OFF
1-6 SELECT		DISP : EXIT
***********		**.***
*** **	****	***

Fig.1

SYSTEM CONSTANT-

		SYSTEM CONSTANT SET				1
			COLOUR		: TRIPLE
			BILINGUAL		: NO
			TUNER		: MA
			ECO SENSOR		: ***
			LANGUAGE		: ***
	/			: SELECT	DISP : EXIT
		- / + : OPERATE
			SYSTEM CONSTANT-
		SYSTEM CONSTANT SET				2
				B/B SOUND	: ***
				LOCK	: 180
				COLOUR AUTO	: ***
				QSS	: MINT
				ALC	: NO
				TEXT RATE	: 20
		/		: SELECT	DISP : EXIT
		- / + : OPERATE
			SYSTEM CONSTANT-
		SYSTEM CONSTANT SET				3
				AMP TUNER	: NO
				VNR	: YES
				TEXT TABLE	: ***
		/		: SELECT	DISP : EXIT
		- / + : OPERATE

Fig.2

(RM-C90)

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No. 51865