JVC AV-32H35SUE, AV-32X35HKE, AV-32X35HUE, AV-32X37HIE, AV-32X37HKE Service Manual

...

52107200304

AV-32X37SUE AV-32X37HKE

AV-32X37HIE AV-32X35HUE

AV-32X35HKE AV-32H35SUE

SERVICE MANUAL

COLOUR TELEVISION

1 2 3

4 5 6

7 8 9

TV OK

AV-32X37SUE, AV-32X37HKE, AV-32X37HIE, AV-32X35HUE,

BASIC CHASSIS

AV-32X35HKE, AV-32H35SUE

<RM-C54H> <RM-C55H>

AV-32X35HUE AV-32X35HKE AV-32H35SUE

AV-32X37SUE AV-32X37HKE AV-32X37HIE

TABLE OF CONTENTS

1 PRECAUTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4

2 SPECIFIC SERVICE INSTRUCTIONS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6

3 ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-14

No.52107

2003/04

AV-32X37SUE AV-32X37HKE AV-32X37HIE AV-32X35HUE AV-32X35HKE AV-32H35SUE

SPECIFICATION

Content

Item

Dimensions ( W x H x D ) Mass 52.8kg

TV RF System CCIR (B/G, D/K, I , L/L') CCIR (I) Colour System PAL / SECAM / NTSC (Only in EXT mode) PAL Stereo System A2 (B/G, D/K) / NICAM (B/G, I, D/K, L) NICAM (I) Teletext System FLOF (Fastext)

Receiving Frequency

Intermediate Frequency

Colour Sub Carrier Frequency

Power Input AC220V ~ AC240V, 50Hz Power Consumption 195W(Max) / 130W(Avg), standby : 2.5W Aerial Input Terminal 75ohm unbalanced, coaxial Picture Tube Visible size : 76cm (Measured diagonally) H : 67.4cm x V : 38.4cm High Voltage 31.0kV (+1kV / -1.5kV) (CRT cutoff, FULL mode) Speaker 13cm x 6.5cm oval type x 2 Audio Power Output 10W + 10W EXT-1 / EXT-2 / EXT-3

(Input / Output) EXT-4 (Input) Video 1V(p-p) 75ohm (RCA pin jack x 1)

AUDIO OUT (Variable) 0~1000mV(rms), Low impedance (RCA pin jack x 2) Headphone Jack Stereo mini jack (Ø3.5mm) x 1 Remote Control Unit RM-C54H (AAA/R03 dry battery x 2) RM-C55H (AAA/R03 dry battery x 2)

Design & specifications are subject to change without notice.

VHF 47MHz ~ 470MHz Not avairable Not avairable

UHF 470MHz ~ 862MHz French CATV 116MHz ~ 172MHz / 220MHz ~ 469MHz VIF Carrier 38.9MHz (B/G, D/K, I , L) / 33.95MHz (L') 38.9MHz (I) SIF Carrier 33.4MHz (5.5MHz:B/G)

PAL 4.43MHz SECAM 4.40625MHz / 4.25MHz NTSC 3.58MHz / 4.43MHz 3.58MHz

Audio (L/R) 500mV(rms) (-4dBs), High impedance (RCA pin jack x 2) S-Video Mini din 4 pin x 1

AV-32X35HUE AV-32H35SUE

94.8cm x 56.2cm x 54.7cm 94.8cm x 56.2cm x 55.0cm 94.8cm x 56.2cm x 54.7cm 94.8cm x 56.2cm x 55.0cm

(AV-32X35HUE)

51.8kg (AV-32H35SUE)

TOP (German system) WST(World standard system)

AV-32X37SUE AV-32X35HKE

52.5kg 52.8kg 52.5kg

FLOF (Fastext) WST(World standard system)

--------

32.9MHz (6.0MHz:I) / 32.9MHz (6.0MHz:I) / 32.4MHz (6.5MHz:L, D/K) / 40.45MHz (6.5MHz:L')

--------

21-pin Euro connector (SCART socket x 3)

Y : 1V(p-p) positive (negative sync provided, when terminated with 75ohm ) C : 0.3V(p-p) (Burst signal, when terminated with 75ohm )

AV-32X37HKE

AV-32X37HIE

(AV-32X37HKE) 47MHz ~ 470MHz (AV-32X37HIE)

1-2 (No.52107)

AV-32X37SUE AV-32X37HKE

AV-32X37HIE AV-32X35HUE

AV-32X35HKE AV-32H35SUE

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

PinNo. Sig nal Designation Matching Value EXT-1 EXT-2 PinNo. EXT-3

1 AUDIO R output 500mV(rms) (Nominal),

Used (TV OUT) Used (LINE OUT) 22 NC

Low impedance

2 AUDIO R input 500mV(rms) (Nominal),

Used (R1) Used (R2) 23 Used (R3)

High impedance

3 AUDIO L output 500mV(rms) (Nominal),

Used (TV OUT) Used (LINE OUT) 24 Not used

Low impedance 4 AUDIO GND Used Used 25 Used 5 GND (B) Used Used 26 Used 6 AUDIO L input 500mV(rms) (Nominal),

Used (L1) Used (L2) 27 Used (L3)

High impedance 7 B input 700mV 8 FUNCTION SW

(SLOW SW)

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

High impedance

, 75 ohm Used Used 28 Not used

(B-W)

Used Used 29 Used

9 GND (G) Used Used 30 Used

10 SCL / T-V LINK Not used Used (SCL2

31 Not used

/ TV-LINK)

11 G input 700mV

, 75 ohm Used Used 32 Not used

(B-W)

12 SDA Not used Used(SDA2) 33 Not used 13 GND (R) U sed Used 34 Used 14 GND (YS) Used Not used 35 Not used 15 R / C input R : 700mV

C : 300mV

16 Ys input

(FAST SW)

Low : 0V-0.4V, High : 1V-3V,

75 ohm

(B-W) (P-P)

, 75 ohm

Used (R) Used (C2/R) 36 Used (C3)

Used Used 37 Not used

17 GND (VIDEO output) Used Used 38 Used 18 GND (VIDEO input) Used Used 39 Used 19 VIDEO output 1V

(Negative sync),

(P-P)

Used (TV OUT) Used (LINE OUT) 40 Not used

75 ohm

20 VIDEO / Y input 1V

(Negative sync),

(P-P)

Used Used 41 Used

75 ohm

21 COMMON GND Used Used 42 Used

(P-P= Peak to Peak, B-W= Blanking to white peak)

[Pin assignment]

20 18 16 14 12 10 8 6 4 2

21 19 17 15 13 11 9 7 5 3 1

(No.52107)1-3

AV-32X37SUE AV-32X37HKE AV-32X37HIE AV-32X35HUE AV-32X35HKE AV-32H35SUE

SECTION 1

PRECAUTIONS

1.1 SAFETY PRECAUTIONS [EXCEPT FOR UK]

(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 sh ading on the schematics and by ( ) on the parts list in Service manual. The use of a substitute repl acement 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 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.

(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, 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 1000 ohms per volt or more sensitivity in the following manner. Connect a 1500 ohm 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

GOOD EARTH GROUND

ON EACH EXPOSED METAL PART

1-4 (No.52107)

AV-32X37SUE AV-32X37HKE

AV-32X37HIE AV-32X35HUE

AV-32X35HKE AV-32H35SUE

1.2 SAFETY PRECAUTIONS [FOR UK]

(1) The design of this product contains special hardware and many circu its and components specially for safety purposes. For

continued protection, no changes should be made to the original design unl ess authorized in writing by the manufacturer. Replacement parts must be identical to those used in the original circuits. Service sh ould be performed by q ualified personn el only.

(2) Alterations of the design or circuitry of the product 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 product have special safety-related characteristics. These characteristics are often

not evident from visual inspection nor can the protection afforded by them necessary be obtained by using replacement components rated for higher voltage, wattage, etc. Replacement parts which have these special safety characteri stics 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 the Service Manual. The u se of a substitute replacement whi ch 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) The leads in the products are routed and dressed with ties, clamps, tubing’s, barriers and the like to be separated from live parts,

high temperature parts, moving parts and / or sharp edges for the prevention of electric shock and fire hazard. When service is required, the original lead routing and dress should be observed, and it shoul d be confirmed that they have been returned to normal, after re-assembling.

WARNING

(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 relevant 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.52107)1-5

AV-32X37SUE AV-32X37HKE AV-32X37HIE AV-32X35HUE AV-32X35HKE AV-32H35SUE

SPECIFIC SERVICE INSTRUCTIONS

2.1 FEATURES

• New chassis design enable use of an interactive on screen control.

• The TELETEXT SYSTEM has a built-in FASTEXT (UK system), TOP (German system) and WST (world standard system) system.

• Because this TV unit corresponds to multiplex broadcast, users can enjoy music programs and sporting events with live realism. In addition, BILINGUAL programs can be heard in their original language.

SECTION 2

• Users can make VCR dubbing of picture and sound by controlling the AV selector to select an optional source at the EXT-2 output shown in figure.

TV EXT-1 EXT-3

EXT-2

2.2 MAIN DIFFERENCE LIST AV-32X37SUE

Part Name

MAIN PWB ASSY SML-1001A-U2 SML-1901A-U2 SML-1001A-U2 MICOM&100Hz

PWB ASSY

FRONT CABINET ASSY LC11563-001A-U [AV-32X37SUE]

REAR COVER LC11316-001B-U

REMOTE CONTROL UNIT

SML0Z001A-U2 SML0Z002A-U2 [Only AV-32H35SUE]

LC11360-008A-U [AV-32X35HUE] LC11360-007A-U [AV-32H35SUE]

LC11316-001C-U [Only AV-32X35HUE]

RM-C54H-1C RM-C55H-1C RM-C55H-1C

AV-32X35HUE AV-32H35SUE

SML0Z001A-U2 SML0Z001A-U2

LC11563-002A-U [AV-32X37HKE] LC11315-008A-U [AV-32X35HKE]

LC11316-001B-U LC11316-001B-U

EXT-4

AV-32X37HKE AV-32X35HKE

LC11563-002A-U

AV-32X37HIE

1-6 (No.52107)

2.3 DISASSEMBLY PROCEDURE

2.3.1 REMOVING THE REAR COVER

(1) Unplug the power cord. (2) Remove the 13 screws [A] as shown in the Fig. 1. (3) Withdraw the REAR COVER toward you.

2.3.2 REMOVING THE SIDE CONTROL JACK ASSEMBLY

• Remove the REAR COVER. (1) Remove the 1 screw [B] as shown in the Fig.1. (2) While slightly raise the SIDE CONTROL JACK ASSY,

remove the 2 claws under the SIDE CONTROL JACK ASSY.

(3) Disconnect the connector [F] and [K] as shown in Fig. 2.

2.3.3 REMOVING THE SIDE CONTROL PWB

• Remove the REAR COVER.

• Remove the SIDE CONTROL JACK ASSY. (1) Remove the 3 claws [C] from back side of the side control

jack assembly as shown in Fig. 2.

(2) Pull out the SIDE CONTROL PWB.

2.3.4 REMOVING THE CHASSIS

• Remove the REAR COVER. (1) Slightly raise the both sides of the chassis by hand and

remove the 2 claws under the both sides of the CHASSIS from the front cabinet.

(2) Withdraw the CHASSIS backward.

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

AV-32X37SUE AV-32X37HKE

AV-32X37HIE AV-32X35HUE

AV-32X35HKE AV-32H35SUE

2.3.8 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 the CHASSIS vertically so that you can easily check

the back side of the PW Board.

CAUTION:

• When erecting the CHASSIS, be careful so that there will be

no contacting with other PW Board.

• 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 (BRAIDED ASS’Y) is connected to the CRT SOCKET PW board.

2.3.9 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.

Connector

2.3.5 REMOVING THE POWER & DEF. PWB

• Remove the REAR COVER.

• Remove the CHASSIS. (1) Remove the 3 screws [D] as shown in Fig. 1. (2) Remove the POWER & DEF. PWB upper.

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

2.3.6 REMOVING THE SIDE SPEAKER

• Remove the REAR COVER. (1) Remove the 2 screws [E], and remove the SPEAKER

ADAPTER as shown in Fig. 1.

NOTE :

When removing the 2 screws [E] of the speaker holder remove the lower side screw first, and then remove the

upper one. (2) Remove the 4 screws [F] attaching the SPEAKER. (3) Follow the same steps when removing the other hand

SPEAKER.

2.3.7 REMOVING THE AV TERMINAL BOARD

• Remove the REAR COVER. (1) Remove the 3 screws [G] as shown in the Fig. 1. (2) Remove the 2 claws [H] under the CHASSIS as shown in

Fig. 3.

(3) Remove the AV TERMINAL BOARD slightly in the

direction of arrow [I] as shown in Fig. 3.

TERMINAL

BOARD

SIDE

CONTROL

PWB

(Back view)

Fig.2

AV SW PWB

Fig.3

(No.52107)1-7

AV-32X37SUE AV-32X37HKE AV-32X37HIE AV-32X35HUE AV-32X35HKE AV-32H35SUE

FRONT CABINET

( x 2)

( x 4)

SIDE CONTROL JACK

ASSEMBLY

REAR COVER

CRT SOCKET

PWB

FRONT

CONTROL

PWB

MAIN PWB

CLAW

SPEAKER ADAPTER

( x 3)

AV SW

PWB

CLAW

SPEAKER

POWER & DEF. PWB

CHASSIS BASE

AV TERMINAL

BOARD

MICOM

PWB

( x 3)

POWER CORD

1-8 (No.52107)

This exploded view describes about AV-32X37SUE. Although other models are slightly different from this figure you can use the exploded view for disassembling other models in same step as AV32X37SUE.

( x 13)

Fig.1

AV-32X37SUE AV-32X37HKE

AV-32X37HIE AV-32X35HUE

AV-32X35HKE AV-32H35SUE

2.3.10 REMOVING 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. 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 screws marked by arrows with a box type

screwdriver as shown in Fig. 5.

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. 6.

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

CLOTH

CRT CHANGE TABLE

Fig.4

CRT

Fig.5

APPROX. 35cm

BOX TYPE SCREW DRIVER

CABINET

CRT

CRT CHANGE T ABLE

Fig.6

(No.52107)1-9

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