JVC AV-32D104/AMA, AV-32D104/ARA, AV-32D104/AYA, AV-32D304/AMA, AV-32D304/ARA Service Manual

SERVICE MANUAL

COLOR TELEVISION

AV-32D104/AYA, AV-32D104/ARA,

AV-32D104/AMA, AV-32D304/AYA,

AV-32D304/ARA, AV-32D304/AMA

BASIC CHASSIS

GE3

AV-32D104 AV-32D304 [RM-C1255G] [RM-C1253G]

TABLE OF CONTENTS

1 PRECAUTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3 2 SPECIFIC SERVICE INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4 3 DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-9 4 ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-15 5 TROUBLE SHOOTING. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-35

COPYRIGHT © 2003 VICTOR COMPANY OF JAPAN, LIMITED

No.52121

2003/5

SPECIFICATION

Items		Contents
		AV-32D104		AV-32D304
Dimensions (W × H × D)		85.9 cm × 68.4 cm × 54.8 cm (33-7/8" ×	27" × 21-5/8")
Mass		52.0kg (114.4Ibs)
TV RF System		CCIR(M)
Color System		NTSC
Sound System		BTSC (Multi Channel Sound)
TV Receiving Channels	VHF LOW	02ch~06ch : 54MHz~88MHz
and Frequency
	VHF HIGH	07ch~13ch : 174MHz~216MHz
	UHF	14ch~69ch : 470MHz~806MHz
	CATV	54MHz~804MHz
		Low Band : 02~06, A-8 by 02~06&01
		High Band : 07~13 by 07~13
		Mid Band : A~I by 14~22
		Super Band : J~W by 23~36
		Hyper Band : W+1~W+28 by 37~64
		Ultra Band : W+29~W+84 by 65~125
		Sub Mid Band : A8, A4~A1 by 01, 96~99
TV / CATV Total Channel		180 Channels
Intermediate Frequency	Video IF Carrier	45.75 MHz
	Sound IF Carrier	41.25 MHz (4.5MHz)
Color Sub Carrier		3.58 MHz
Power Input		AC120V , 60Hz
Power Consumption		128W
Picture Tube		Full square Visible size:80cm (32") measured diagonally, (W65.6 cm × H49.6 cm)
High Voltage		31kV ±1.3kV (at zero beam current)
Speaker		5cm × 12cm (2" × 4-3/4"), Oval type × 2
Audio Power Output		5W + 5W
Antenna Terminal (VHF / UHF)		75 Ω unbalanced coaxial, F-type connector
INPUT1 (Rear)	VIDEO	1V(p-p), negative sync, 75 Ω , RCA pin jack × 1
	S-VIDEO	Mini DIN 4-pin × 1
		Y : 1V(p-p), negative sync, 75 Ω
		C : 0.286V(p-p), (burst signal), 75 Ω
	AUDIO (L/MONO, R)	500mVrms(-4dBs), high impedance, RCA pin jack × 2
INPUT2 (Rear)	VIDEO	---------		1V(p-p), negative sync, 75 Ω , RCA pin
				jack × 1
	COMPONENT VIDEO	Y&Video : 1V(p-p), negative sync, 75 Ω	,	Y : 1V(p-p), negative sync, 75 Ω ,
		RCA pin jack × 1		RCA pin jack × 1
		Pb/Pr : 0.7V(p-p), 75 Ω , RCA pin jack ×	2	Pb/Pr : 0.7V(p-p), 75 Ω , RCA pin jack × 2
	AUDIO (L / MONO, R)	500mVrms(-4dBs), high impedance, RCA pin jack × 2
INPUT3 (Front)	VIDEO	1V(p-p), negative sync, 75 Ω , RCA pin jack × 1
	AUDIO (L / MONO, R)	500mV(rms)(-4dBs), high impedance, RCA pin jack × 2
AUDIO OUTPUT (L / R)		500mV(rms)(-4dBs)low Impedance, (400kHz when modulated 100%) ,
		RCA pin jack × 2
AV COMPULINK lll		---------		3.5mm mini jack × 1
Remote Control Unit		RM-C1255G (AA/R6/UM-3 battery × 2)		RM-C1253G (AA/R6/UM-3 battery × 2)

Design & specifications are subject to change without notice.

1-2 (No.52121)

SECTION 1 PRECAUTION

1.1SAFETY 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)Use isolation transformer when hot chassis.

The chassis and any sub-chassis contained in some products are connected to one side of the AC power line. An isolation transformer of adequate capacity should be inserted between the product and the AC power supply point while performing any service on some products when the HOT chassis is exposed.

(5)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 the LIVE side GND and ISOLATED (NEUTRAL) side GND or EARTH side GND at the same time with a measuring apparatus (oscilloscope etc.). If above note will not be kept, a fuse or any parts will be broken.

(6)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).

(7)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.

(8)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 10kΩ 2W resistor to the anode button.

(9)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.

(10)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, screw heads, earphone jack, control shafts, etc.) to be sure the product is safe to operate without danger of electrical shock.

a)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.

b)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 1000Ω per volt or more sensitivity in the following manner. Connect a 1500Ω 10W resistor paralleled by a 0.15µF 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)

	0.15 F AC-TYPE
			PLACE THIS PROBE
	1500	10W	ON EACH EXPOSED
			METAL PART

GOOD EARTH GROUND

(11)High voltage hold down circuit check.

After repair of the high voltage hold down circuit, this circuit shall be checked to operate correctly.See item "How to check the high voltage hold down circuit".

This mark shows a fast operating fuse, the letters indicated below show the rating.

A V

POWER CORD REPLACEMENT WARNING.

Connecting the white line side of power cord to "WHT" character side.

PWB

White line side

PW

WHT

(No.52121)1-3

SECTION 2

SPECIFIC SERVICE INSTRUCTIONS

2.1FEATURES

•Title CLOSED CAPTION broadcast of C1~C4 and T1~T4 formula is receivable.

•The voice multiplex function of the MTS system is built in.

•By the 3-line digital comb filter, the refreshed image can be seen.

•Expression of a favorite screen can be chosen by the VIDEO STATUS function.

•A program can be enjoyed with a powerful sound by the HYPER SURROUND function.

•Since the V-chip is built in, it can choose, view and listen to a healthy program.

•The RETURN + function is built-in.

•A quick favorite program can be looked for by the HYPER-SCAN function.

•Since the component signal input terminal is equipped, it reappears direct without deteriorating the signal from DVD.

•By the THEATER PRO function, a reality to which it is viewing and listening in the movie theater can be tasted. (AV-32D304 only)

•By the COMPULINK III function, operation interlocked with the DVD deck can be performed from remote control. (AV-32D304 only)

2.2HOW TO IDENTIFY MODELS

How to recognize from the appearance of the model concerned is written below.

Please distinguish from several contents currently printed on the rating label.

MODEL NAME

AV-32D104 or AV-32D304

***********

DISTINGUISH NAME

AYA , ARA or AMA

1-4 (No.52121)

2.3MAIN DIFFERENCE LIST

Item	AV-32D104/AYA	AV-32D104/ARA	AV-32D104/AMA	AV-32D304/AYA	AV-32D304/ARA	AV-32D304/AMA
THEATER PRO BUTTON		NON			YES
WHITE BLANCE		NON			YES
(COLOR TEMP.)
GAME BUTTON		YES			NON
BBE SYSTEM		NON			YES
VIDEO-IN	NON (comnon use to Component-Y)				YES
(INPUT-2:REAR-TERMINAL)
AV COMPULINK lll		NON			YES
REMOTE CONTROL UNIT		RM-C1255G			RM-C1253G
ILLUMINATION		NON			YES
(REMOTE CONTROL UNIT)
MAIN PWB ASS'Y	SGE-1505A-M2	SGE-1509A-M2	SGE-1501A-M2	SGE-1507A-M2	SGE-1511A-M2	SGE-1503A-M2
CRT SOCKET PWB ASS'Y	SGE-3503A-M2	SGE-3505A-M2	SGE-3501A-M2	SGE-3503A-M2	SGE-3505A-M2	SGE-3501A-M2
AV SELECT PWB ASS'Y	SGE-5501A-M2	←	←	SGE-5502A-M2	←	←
FRONT CABINET ASS'Y	LC10641-006A-A	←	←	LC10641-005C-A	←	←
TERMINAL BOARD	LC20899-006A-A	←	←	LC20899-004A-A	←	←
PICTURE TUBE (ITC)	A80AKB50X04	A80AEJ15X01	A80JUA061X06	A80AKB50X04	A80AEJ15X01	A80JUA061X15

2.4FUNCTIONS

FRONT PANEL CONTROLS

					6
				MENU	- CHANNEL +	- VOLUME +	POWER	ON TIMER
INPUT3
					OPERATE
VIDEO	L/MONO-AUDIO-R
1	2	3		4	5	7	8		9	10
	1	INPUT 3 : VIDEO
	2	INPUT 3 : AUDIO L/MONO						6	CHANNEL (-/+) BUTTON
	3	INPUT 3 : AUDIO R						7	VOLUME (-/+) BUTTON
								8	POWER SW BUTTON
	4	MENU (	) BUTTON					9	ON TIMER / POWER INDICATOR
	5	OPERATE (		/	) BUTTON			10	REMOTE CONTROL SENSOR

(No.52121)1-5

REAR TERMINAL

									AV-32D104
							A	INPUT 1 TERMINAL
							1		S-VIDEO
		3	2	1	A	B	2		VIDEO
	AUDIO		VIDEO	S-VIDEO			3		AUDIO-L/MONO
	R	L/MONO	OVER				4		AUDIO-R
4				INPUT 1
7				INPUT 2
							B
				COMPONENT				INPUT 2 TERMINAL
6				VIDEO-IN
							6		AUDIO-L/MONO
				Y		75
	R	L
				VIDEO		(VHF / UHF)
							7		AUDIO-R
	AUDIO OUT			PB
							8		COMPONENT-Y / VIDEO-IN
				PR			9	COMPONENT-PB
							10 COMPONENT-PR
C	12	11		9		14
			8	10			C AUDIO OUTPUT TERMINAL (Fixed)
							11		AUDIO-L
							12		AUDIO-R
							14 ANTENNA TERMINAL
									758*( 7*(
									AV-32D304

					A	INPUT 1 TERMINAL
					1	S-VIDEO
4	3	2	1	A B	2	VIDEO
					3	AUDIO-L/MONO
AUDIO		VIDEO	S-VIDEO
R	L/MONO	OVER			4	AUDIO-R
			INPUT 1
5
7			INPUT 2
					B	INPUT 2 TERMINAL
6			COMPONENT		5	VIDEO
R	L		Y	75
				(VHF / UHF)	6	AUDIO-L/MONO
AUDIO OUT			PB		7	AUDIO-R
AV CONPULINK			PR		8	COMPONENT-Y
					9 COMPONENT-PB
C 12	11	13	9	14	10 COMPONENT-PR
		8	10

C AUDIO OUTPUT TERMINAL (Fixed)

11 AUDIO-L

12 AUDIO-R

13 COMPULINK TERMINAL

14 ANTENNA TERMINAL

758*( 7*(

1-6 (No.52121)

REMOTE CONTROL UNIT

								RM-C1255G [AV-32D104]
			1	VCR/ DVD KEY
1			2	TV/ CATV KEY
			3	INPUT KEY:	TV VIDEO1	VIDO2		V2-COMPONENT	VIDEO3
2	11		4	DISPLAY KEY
			5	SLEEP TIMER KEY: 0		15	30	165 180
3			6	HYPER SURROUND KEY
4	12			Hyper Surround Can be Changed ON/OFF
5			7	VIDEO STATUS KEY: STANDARD DYNAMIC THEATER						GAME
6			8	MUTING KEY
7	18		9	VOLUME (+/-) KEY / VOL. (			/	) KEY
19	13		10	MENU KEY:	PICTURE ADJUST SOUND ADJUST
					INITIAL SETUP		CLOCK/TIMERS
8	14		11	POWER KEY
		15
9			12	CHANNEL NUMBER KEY
10	16		13	GAME KEY
			14	C.C. (CLOSED CAPTION) KEY:			OFF	CAPTION TEXT
	17		15	CHANNEL (+/-) KEY / CH. (			/	) KEY
			16	EXIT KEY
			17	VCR CONTROL KEY
			18	RETURN + KEY
			19	100+KEY
								RM-C1253G [AV-32D304]

1

2

3

4

5

6

7

8

9

10

11

12

13

20

19

14

15

17

18

1VCR/ DVD KEY

2TV/ CATV KEY

3 INPUT KEY: TV VIDEO1VIDO2V2-COMPONENTVIDEO3

4DISPLAY KEY

5SLEEP TIMER KEY: 01530 165180

6SOUND KEY

HYPER SORRUND and BBE Can be Changed ON/OFF

7VIDEO STATUS KEY: STANDARD DYNAMICTHEATERGAME

8THEATER PRO KEY

9MUTING KEY

10 VOLUME +/- KEY / VOL. ( / ) KEY

16	11	MENU KEY	PICTURE ADJUST					SOUND ADJUST
				INITIAL SETUP			CLOCK/TIMERS

12POWER KEY

13CHANNEL NUMBER KEY

14LIGHT KEY

15C.C. (CLOSED CAPTION) KEY: OFFCAPTIONTEXT

16CHANNEL (+/-)KEY / CH. (/) KEY

17EXIT KEY

18VCR CONTROL KEY

19RETURN + KEY

20100+KEY

(No.52121)1-7

2.5SYSTEM BLOCK DIAGRAM

IC702

MEMORY

S C L 1

S D A 1

MAIN MI-COM	REMOCON
IC201
(MICOM/V/C/DEF)	A F T 1

SCL0	SDA0

IC7701

REMOCON RECEIVER

IC101

IF DET

S C L 0

S D A 0

S C L 0

S D A 0

S C L 0

S D A 0

S C L 0

S D A 0

IC501		IC5501		TU001		IC5201
MTS		AV SW		TUNER		3L Y/C

2.6MAIN MI-COM (CPU) PIN FUNCTION

	Pin	Pin name	I/O	Function
	No.
	1	LED/ADC8Bit	I	AFT control2
	2	ADC8bit	I	AFT control1
	3	ADC8bit/TC1/Int2	I	Key IN
	4	uPLDVss	-	GND
	5	Reset	I	RESET,RESET:[L]
	6	Xout	O	8MHz OSC
	7	Xin	I	8MHz OSC
	8	TEST	-	GND
	9	uP DVdd	-	5V
	10	AGC_MUTE	O	AGC_MUTE,MUTING:[L],NORMALY:[H]
	11	UP VVss	-	GND
	12	TV HGND	-	GND
	13	FBP in	I	FBP
	14	Hout	O	H OUT
	15	HVcc	-	9V
	16	HAFC 1	-	H AFC
	17	Vsaw	-	GND
	18	Vout	O	V OUT
	19	EW out	O	EW OUT
	20	Xray	I	X RAY
	21	Ys	I	YS
	22	Cb in	I	Cb INPUT
	23	Y in	I	Y INPUT
	24	Cr in	I	Cr INPUT
	25	TV DVcc	-	3.3V
	26	V3in/Cin	I	V3 IN
	27	EHTin	I	EHT IN
	28	V2in/Yin	I	V2 IN

	Pin	Pin name		I/O	Function
	No.
	29	TV DGND		I	GND
	30	V1in		I	V1 IN
	31	ABCL		O	ABCL IN
	32	Moni OUT		-	MONITOR
	33	Black Det		O	BLACK DETECTION
	34	SVMout		-	SVM OUT
	35	APL DET		-	APL FILTER
	36	Chroma PLL		O	APL FILTER
	37	fsc out		-	3.58MHz
	38	TV YC Vcc		O	5V
	39	R out		O	R OUT
	40	G out		O	G OUT
	41	B out		-	B OUT
	42	RGB Vcc		I	9V
	43	IK in		-	IK INPUT
	44	TV AGND		-	GND
	45	uP AGND		-	GND
	46	uP Avdd		O	5V
	47	MAIN-POWER		O	MAIN POWER:ON:[L],OFF[H]
	48	HAZARD		I	SELFCHECK:HAZARD:[H],NORMALY:[L]
	49	SDA	SDAO	I/O	SCA0
	50	SDA	SDAO	O	SCL0
	51	PWM7Bit/TC2/Int0		I/O	SDA1(EEPROM)
	52	PWM14bit		O	AGC ADJUST
	53	Int5/Stop		O	SCL1(EEPROM)
	54	Int4/TC3		O	LED,ON:[L],OFF:[H]
	55	Int3/RXIN		I	REMOCON INPUT
	56	LED2/CSOUT		I	COMPULINK

1-8 (No.52121)

SECTION 3

DISASSEMBLY

3.1DISASSEMBLY PROCEDURE

3.1.1 REMOVING THE REAR COVER

•Unplug the power plug.

(1)As shown in Fig.2, take out the 14 screws [A].

(2)Remove the REAR COVER toward you.

NOTE :

When reinstalling the REAR COVER, carefully push it inward after inserting the chassis into the REAR COVER groove.

3.1.2 REMOVING THE CHASSIS BASE

•Remove the REAR COVER.

(1)Slightly raise the both sides of the CHASSIS BASE by hand, and teka out the 2 claws [B] (Fig.1 and Fig.2) under the both sides of the chassis from the chassis rail.

(2)As shown in Fig.1, draw the CHASSIS BASE backward along the chassis rail [C] (Fig.1) in the arrow direction [D] (Fig.2).

(If necessary, detach the wire clamp, connector's etc.)

NOTE :

When conducting a check with power supplied, be sure to confirm that the CRT earth wire is connected to the CRT SOCKET PWB and the MAIN PWB.

3.1.3REMOVING THE TERMINAL BOARD

• Remove the REAR COVER.

(1) As shown in Fig.2, take out the 4 screws [E].

(2) When you pull out the TERMINAL BOARD, it can be removed.

3.1.4REMOVING THE FRONT CONTROL PW BOARD

•Remove the REAR COVER.

•Remove the CHASSIS BASE.

(1)As shown in Fig.2, take out the 3 screws [F] attached the FRONT CONTROL PWB with the front cabinet.

(2)Then remove the FRONT CONTROL PWB.

3.1.5 REMOVING THE FRONT TERMINAL PW BOARD

•Remove the REAR COVER.

•Remove the CHASSIS BASE.

(1)As shown in Fig.2, take out the 2 screws [G].

(2)Then remove the FRONT TERMINAL PWB.

3.1.6REMOVING THE SPEAKER

• Remove the REAR COVER.

• Remove the CHASSIS BASE.

(1) As shown in Fig.2, take out the 4 screws [H].

(2) Follow the same steps when removing the other hand SPEAKER.

3.1.7CHECKING THE MAIN PW BOARD

•To check the backside of the MAIN PWB.

(1)Pull out the CHASSIS BASE. (Refer to REMOVING THE CHASSIS BASE).

(2)Erect the chassis vertically so that you can easily check from the backside of the MAIN PWB.

CAUTION :

•When erecting the chassis, be careful so that there will be no contacting with other PWB.

•Before turning on power, make sure that the CRT earth wire and other connectors are properly connected.

3.1.8 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.

FRONT CABINET

	MAIN PWB
C
CHASSIS BASE	B
Fig.1

(No.52121)1-9

FRONT CABINET

CRT

SPEAKER

H

POWER CORD

CRT SOCKET PWB

FRONT TERMINAL PWB

CLAW B

MAIN PWB

HTV

G

CHASSIS BASE

H

FRONT

CONTROL F

PWB

SPEAKER

CLAW B	D

AV SEL PWB	E
	TERMINAL BOARD
REAR COVER

NOTE

This illustration describes about AV-32D304. Although the AV-32D104 is slightly different from this illustration, it can

use for AV-32D104 in the same steps as this illustration.

A

Fig.2

1-10 (No.52121)

3.2REMOVING THE CRT

NOTE:

•Replacement of the CRT should be performed by 2 or more persons.

•After removing the REAR COVER, CHASSIS etc.,

(1)Putting the CRT change table on soft cloth, the CRT change table should also be covered with such soft cloth (shown in Fig. 3).

(2)While keeping the surface of CRT down, mount the TV set on the CRT change table balanced will as shown in Fig. 3.

(3)Remove 4 screws marked by arrows with a box type screwdriver as shown in Fig. 4.

NOTE:

Since the cabinet will drop when screws have been removed, be sure to support the cabinet with hands.

(4)After 4 screws have been removed, put the cabinet slowly on cloth (At this time, be carefully so as not to damage the front

surface of the cabinet) shown in Fig. 5.

NOTE:

•The CRT should be assembled according to the opposite sequence of its dismounting steps.

•The CRT change table should preferably be smaller that the CRT surface, and its height be about 35cm.

CRT CHANGE TABLE

APPROX.

35cm

CLOTH

Fig.3

CRT

CRT CHANGE TABLE

BOX

TYPE SCREW DRIVER

Fig.4

CRT

	CABINET	CRT
		CHANGE TABLE

Fig.5

(No.52121)1-11