JVC AV32S2EIGR, AV32S2EKBL, AV32SEKGR Service Manual

SER VICE MANUAL

COLOUR TELEVISION

V32S2EKG

V32S2EKBL

V32S2EIG

BASIC CHASSIS

AV32S2EKGR AV32S2EKBL AV32S2EIGR

CONTENTS

SPECIFICATIONS

SAFETY PRECAUTIONS

WARNING

FEATURES

MAIN DIFFERENCE PARTS LIST

SPECIFIC SERVICE INSTRUCTIONS

SERVICE ADJUSTMENTS

PARTS LIST

★

OPERATING INSTRUCTIONS

★

STANDARD CIRCUIT DIAGRAM

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･･･

･････････

･･････

2 4 4 5 5

6 12 31

1-1 2-1

No.51804

pr. 2001

V32S2EKGR

V32S2EKBL V32S2EIGR

SPECIFICATIONS

Item

AV32S2EKGR AV32S2EKBL

Content

AV32S2EIGR

Dimensions ( W Mass

TV RF System Colour System

Stereo System Teletext System FLOF (Fastext)/WST(Word Standard system) Receiving Frequency

Intermediate Frequency

Colour Sub Carrier Freq.

Power Input Power Consumption Aerial Input Term

Picture Tube High Voltage

Speaker

××××H××××

VIF Carrier SIF Carrier

NTSC

901mm×556mm×557mm

D )

57.4kg CCIR ( I )

PAL / NTSC (Only in EXT mode) NICAM ( I )

VHF

470MHz ～ 862MHz 470MHz ～ 862MHz

UHF

38.9MHz ( I )

32.9MHz (6.0MHz:I)

4.43MHz

PAL

3.58MHz / 4.43MHz AC 230V , 50Hz

172W(Max) / 121W(Avg), 75Ωunbalanced, Coaxial

Visible size : 76cm, Measured diagonally

31.0kV (at zero beam current)

20cm×4cm ,Oval type×2

1kV

-1.5kV

47MHz ～ 470MHz

Audio Output EXT-1/EXT-2/EXT-3

(Input / Output) EXT-4 (Input)

Video

Audio(L/R)

S / Video

AUDIO OUT (Variable)

Headphone jack Remote Control Unit

7.5W + 7.5W 21-pin Euro connector

(SCART socket)

1Vp-p 75Ω(RCA pin j ac k) 500mVrms(-4dBs), High Impedance (RCA pin jack)

Y : 1Vp-p PO SITIVE ( Negat ive sync P rovided , when

terminated with 75Ω)

C : 0.28 6Vp-p

(Burst signal, when terminated with 75Ω)

0～1Vrms, Low Impedance (RCA pin jack×2)

Stereo mini jack (φ3.5mm ) RM-C55 (AAA/R03 dry cell battery×2)

Design & specifications are subject to change without notice

No.51804

■■■■

21-pin Euro connector (SCART socket) : EXT-1 / EXT-2 / EXT-3

(P-P= Peak to Peak, S-W = Sy nc ti p to whit e peak , B-W = Blanking to whit e peak )

V32S2EKGR

V32S2EKBL

V32S2EIGR

Pin No.

Signal Designation Matching Value EXT-1 EXT-2 EXT-3

1 AUDIO R output 500mVrms(Nominal),

Low impedance

2 AUDIO R input 500mVrms(Nominal),

High impedance

3 AUDIO L output 500mVrms(Nominal),

Low impedance

4 AUDIO GND 5 GND (B) 6 AUDIO L input 500mVrms(Nominal),

High impedance

7B input 8 FUNCTON SW

(SLOW SW)

9 GND (G) 10 SCL3 NC 11 G input 12 SDA3 NC 13 GND (R) 14 GND (YS) 15 R / C input

16 Ys input 17 GND(VIDEO output) 18 GND(VIDEO input) 19 VIDEO out pu t

20 VIDEO / Y input 21 COMMON GND

700mV Low : 0-3V, High : 8-12V, High

impedance

700mV

R : 700mV C : 300mV Low : 0 - 0.4, High : 1 - 3V, 75

, 75

Ω○

B-W

, 75

Ω○

B-W

, 75

B-W

, 75

P-P

(Neg ati ve g oin g s ync ) , 75

P-P

(Neg ati ve g oin g s ync ) , 75

P-P

Ω○

Ω○ ○ ○

(TV OUT)

(only R)

(TV)

○

○○○

○

○○○

○

○○○

○

(LINE OUT)

○

(LINE OUT)

NC NC

○

NC NC

○

NC NC

○

(only C)

NC NC

○

(LINE OUT)

○

(only C)

Pin assignment

[

]

No.51804

V32S2EKGR

V32S2EKBL V32S2EIGR

SAFETY PRECAUTIONS

1. The design of this pr oduc t contains speci al hardw are and man y 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. Alter at i ons of the d esi g n or c irc uitry of the pr oduct s h oul d n ot b e made. Any design alterations or additions will void the manuf act urer's warr anty and will fur t her reliev e the manuf actur er of responsi bility f or person al injury or pr operty dam age res ulting therefrom.

3. Many electrical and mechanical parts in the product have special safety-related characteristics. These characteristics are often not evident from visu al ins pec tion n or can th e protect i on aff orded by them nec essar y be obtain ed by usi ng repl acemen t comp onent s rated for hi gher volt age, wattag e, etc. R eplacem ent parts whic h

WARNING

have these special safety characteristics are identified in the Parts List of S er vice Man ual. El ec t rical comp onents h avi n g s u ch features ar e i d entifi ed b y s h ad ing on th e s c h em at ic s an d b y (!) on the P arts Lis t in th e Ser vic e Man ual. Th e us e of a subst itu te replacement which does not have the same safety charact erist ics as the rec omm ended r eplacem ent par t shown in the Par ts L i s t of S ervice Man u al m ay cause shoc k, fire, or ot her hazards.

4. The leads in the products are routed and dressed with ties, clamps, tubing’s , bar riers and the like to b e separ ated fr om li ve parts, high temperature parts, moving parts and / or sharp edges for the prevention of electric shock and fire hazard. When servic e is r eq uired, t he origin al l ead routi ng and dr ess s h ou ld be observed, and it should be confirmed that they have been return ed t o nor m al , after re-as sembli ng.

1. The equipment has been designed and manufactured to meet international safety standards.

2. It is the legal responsibility of the repairer to ensure that these safety standards are maintained.

3. Repairs must be made in accordance with the re levant safety standards.

4. It is essential that safety critical components are replaced by approved parts.

5. If mains voltage selector is provided, check setting for local voltage.

No.51804

FEATURES

V32S2EKGR

V32S2EKBL

V32S2EIGR

By preference, users c an select t h e p ic ture si z e from RE G ULA R ,

PANORAMIC, FUL L, 14 :9 ZOOM , 16: 9 ZOOM, 16:9 ZOOM SUB TITLE modes. When the TV unit received WSS picture signal, the picture can be changed to 16:9 ZOOM mode automatically.

The TELETEXT SYSTEM has a built-in FASTEXT and WST

system.

B ecause this TV uni t corresp onds t o multipl ex broadc ast, us ers

can enjo y music pr ograms an d spor ting ev ents wit h live real ism. In additi on, BILINGUAL programs c an be heard in their original language.

TV EXT-1 EXT-3

EXT-2

Built-in ECO (ECONOMY, ECOLOGY) MODE.

In accordance with the brightness in a room, the brightness and/or contrast of the picture can be adjusted automatically to make th e opti mu m pictur e wh ic h is eas y on th e ey e.

Users can make VCR dubbing of picture and sound by controlling

the AV select or to sel ect an opti onal sour ce at the E XT-2 output shown in figure.

EXT-4

MAIN DIFFERENCE PARTS LIST

Model Name

!!!!

Part Name

MAIN PWB SJK-1914A-U2

AV SEL. PWB SJK0S914A-U2

FRONT FRAME LC10851-002B-U LC10851-003A-U LC10851-002B-U

RATING LABEL LC20091-034A-U LC20091-035A-U LC20091-036A-U

INST BOOK LCT0895-001A-U

REG. SHEET AEM3148-001-E

AV32S2EKGR AV32S2EKBL AV32S2EIGR

←

←×

SJK-1714A-U2

SJK0S714A-U2

LCT0896-001A-U

No.51804

V32S2EKGR

V32S2EKBL V32S2EIGR

SPECIFIC SERVICE INSTRUCTIONS

DISASSEMBLY PROCEDURE

REMOVING THE REAR COVER

1. Unplug the power cord.

2. Remove the 4 screw caps from rear cover as shown in Fig.1.

3. Then remove 11 screws marked ”A” as shown in the Fig. 1.

4. Withdraw the rear cover toward you.

REMOVING THE SIDE C ON TRO L JACK ASSEMBLY

After removing the re ar cover.

1. Remo ve th e sc rew marked B as shown in the Fig.1.

2. While sli ghtly r aise th e s id e control jac k assembl y, r em o ve the 2 claws under the side control jack assembly.

3. Disconnec t t he c onn ector “SR”, “SL”, “S”, “F” and “K” as shown in Fig 2.

REMOVING THE SIDE CONTROL PWB

After removing the rear cover and side control jack assembly.

1. Remove the 3 c laws “C” f rom b ack s i d e of t h e s i d e co n tro l j ac k assembly as shown in Fig.2.

2. Pull out the SIDE CONTROL PWB.

REMOVING THE CHASSIS

After removing the re ar cover.

1. Slightl y rais e the b ot h sid es of the c hass is b y h and and r em ove the two c laws und er th e both s id es of the c has sis from the f r ont cabinet.

2. Withdraw the chassis backward. (If necessary, take off the wire clamp, connectors etc.)

REMOVING THE SPEAKER BOX

After removing the re ar cover.

1. Remove the 2 screws marked ”D” as shown in Fig. 1.

: When removi ng the scr ews marked D of th e speaker b ox

NOTE

assembly, remove the lower side screw first, and then remove the upper one.

2. Remove the 2 screws “E” attaching the speaker box.

3. Remove the 2 screws “F” attaching the speaker.

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

REMOVING THE AV TERMINAL BOARD

After removing the re ar cover.

1. Remove the 3 screws marked ”G” as shown in the Fig. 1.

2. Remo ve th e c laws m arked “H” under t he CH ASS IS as sh own in Fig. 3.

3. While raising the claw marked “I”, remove the top of the AV TERMINAL BOARD slightly in the direction of arrow ”J” as shown in Fig. 3.

CHECKING THE PW BOARD

To check the back side of the PW Board.

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

2) Erect t he ch assis vertic ally s o that you c an easi ly ch eck th e back side of the PW Board.

[CAUTION]

When erecting the chassis, be careful so that there will be no

co n tac ti ng wit h oth e r PW B o ard .

Before turning on power, make sure that the wire connector is

properly connected.

When conducting a check with power supplied, be sure to confirm

that the CRT EARTH WIRE (BRAID ED ASS’Y) is conn ected to the CRT SOCKET PW board.

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 inad ver tent l y remov ed, b e sur e to ti e th e wir es with a new cable tie.

Connector

SR SL S

Fig. 2

V TERMINAL

BOARD

SIDE CONTROL PWB

AV SEL. PWB

Fig. 3

No.51804

FRONT CABINET

CRT SOCKET PWB

FRONT CONTROL PWB

SPEAKER

V32S2EKGR

V32S2EKBL

V32S2EIGR

SPEAKER BOX

Fig. 2

SIDE CONTROL JACK ASSEMBLY

AV SEL. PWB

CONTROL BASE

CLAW

AV TERMINAL BOARD

POWER & DEF. P WB

MAIN PWB

CHASSIS

SPEAKER

SPEAKER BOX

SCREW CAP

REAR COVER

Fig. 1

No.51804

SCREW CAP

V32S2EKGR

A A

V32S2EKBL V32S2EIGR

REMOVING THE CRT

Replacement of the CRT should be performed by 2 or more

persons.

After removing the 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.4).

2. While keeping the surface of CRT down, mount the TV set on the CRT change table balanced will as shown in Fig.5.

3. Remove 4 sc rews mark ed by arr ows w ith a b ox type screw dri ver as shown in Fig.5.

Sinc e t h e cabin et will drop wh en s c rews have been rem o ved , be

sure to support the cabinet with hands.

4. After 4 sc rews have been removed, put th e cabinet sl owly on cloth (At this time, be carefully so as not to damage the front surface of the cabinet) shown in Fig.6.

The CRT should be assembled according to the opposite

sequence of its dis m oun ti ng steps.

T he CRT ch ang e table shoul d pr eferabl y be smal l er th at th e CRT

surfac e, and its heig ht b e ab out 35cm.

CRT CHANGE TABLE

PPROX.

35cm

CLOTH

Fig. 4

COAT ING OF SILICON GREASE FO R ELECTRICAL INSULATION ON THE CRT ANODE CAP SECTION.

Subs equent t o replac ement of the CRT and HV tr ansformer or

repair of the anode c ap, etc. by dismou nting them, be sure to coat silicon greas e f or el ec trical insulati on as sh own in F i g. 7. Wipe around the anode button with clean and dry cloth. (Fig.7) Coat sil icon gr eas e on t he s ection arou nd the anod e but ton. A t this ti me, t ak e c are s o th at an y si lic on gr eas es d os e not s tic k to the anode button. (Fig.8)

Silicon grease product No. KS - 650N

★★★★

CRT

node button

Silicon gr ease

coating

CABINET

pprox. 20mm (Do not coat grease on this section

node button (No sticking of silicon grease)

Fig. 5

CRT

CRT CHANGE TABLE

Fig. 6

Silicon gr ease should b e c oat ed by 5mm or mor e from the outside diamet er of anode cap.

Coating positi on of silicon grease

node cap

Fig. 7 Fig. 8

No. 51804

REPLACEMENT OF CHIP COMPONENT

CAUTIONS

1. Avoid heating for more than 3 seconds.

2. Do not rub the electrodes and the resist parts of the pattern.

3. When removing a chip part, melt the solder adequately.

4. Do not reuse a chip p art af t er r em ovi ng it.

SOLDERING IRON

1. Use a high ins ul ati on solderin g iron with a thi n p oint ed end of it.

2. A 30w soldering iron is recommended for easily removing parts.

REPLACEMEN T STEPS

How to remove Chip parts

1. Resistors, capacitors, etc

####

(1) As shown in the figure, push the part with tweezers and

alternately m elt th e s older at each en d.

(2) S hif t wi th tweezers and remo ve th e ch ip part.

Transistors, diodes, variable resistors, etc

####

(1) Apply extra solder to each lead.

V32S2EKGR

V32S2EKBL

V32S2EIGR

2. Ho w to install Chip parts

Resistors, capacitors, etc

####

(1) Apply solder to the pattern as indicated in the figure.

(2) Grasp th e chip part with tw eezers and pl ace it on th e sold er.

Then heat an d m elt t h e s old er at b oth en ds of th e chip part .

Transistors, diodes, variable resistors, etc

####

(1) Apply solder to the pattern as indicated in the figure. (2) Grasp the chip part with tweezers and place it on the solder. (3) First solder lead

as indicated in the figure.

SOLDER

(2) As shown in the figure, push the part with tweezers and

alternat el y melt t he s old er at each lead . Shif t and r emov e th e chip part.

Note : After removing the part, remove remaining solder from the

pattern.

SOLDER

No.51804

(4) Then solder leads

and C.

V32S2EKGR

V32S2EKBL V32S2EIGR

REPLACEMENT OF MEMORY ICs

1. Memory ICs

This TV use mem ory ICs . In the mem or y ICs, there ar e memor iz ed dat a for cor rectl y op er ating th e vi deo an d def l ection cir cu its. W h en r epl acing memory ICs, be sure to use ICs written with the initial values of data.

2. Procedure for replacing memory ICs

PROCEDURE

(1)

Power off

Switch th e p ow er off and unpl ug the p ow er c ord from the w all ou tl et.

(2)

Replace ICs

Be sure to use memory ICs 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 set SYSTEM CONSTANT SET:

It must not adjust with ou t sign al.

****

1) Press the INFORMATION key and the MUTING key of the REMOTE CONTROL UNIT simultaneously.

2) T he SERVICE MEN U scr een of F ig . 1 wil l b e dis pl ay ed.

3) While the SERVICE MENU is displayed, press the INFORM ATION key and MUT ING key s imultan eousl y, and th e SYSTEM CONSTANT SET screen of Fig. 2 wi ll b e dis pl ay ed .

4) Ch eck t he s etti ng valu es of th e SYS TE M CON STA NT S ET of Table 1. If the valu e is dif f erent , s elect the s et ting item wi th th e FUNCTION UP/DOWN key, and set th e correct value with the FUNCTION -/+ key.

5) Press the MENU key to memorize the setting value.

6) Press the INFORM ATION key twice, and return to the normal screen.

SERVICE MENU

1. IF 2. V/C

3. AUDIO 4. DEF

5. VSM PRESET 6. STATUS

7. SHIPPING (OF F)

1-7 : SELECT : EXIT

Fig.1

SYSTEM CONSTANT SET

MODEL=JK_EURO (V

COUNTRY : INCH : MODEL :

- + : STORE : EXIT

JVC JK EURO V00

******** - *****

Fig.2

*.****

** ** **

)

(5)

Setting o f re ce iv e channel s

Set the receive channel.

NAME OF REMOTE CONTROL KEY

Names of key

key

For setting, refer to the OPERATING INSTRUCTIONS.

(6)

User setti n gs

Check th e us er s ett in g values of T abl e 2, and if setti ng v al ue is

INFORMATION

MUTING

iiii

different, set the correct value. For setting, refer to the OPERATING INSTRUCTIONS.

▼

(7)

Setting of SERVICE MENU

Verif y the s etting items of th e wh ere neces sary .

SERVICE MENU

of Table 3, and reset

FUNCTION UP/DOWN

For setting, refer to the SERVICE ADJUSTMENTS.

▼

FUNCTION -/+

No. 51804

▼

+ 22 hidden pages