JVC AV-32WL1EU User manual

No.51733
Jun. 2000
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3COPYRIGHT © 2000 VICTOR COMPANY OF JAPAN, LTD.
AV-32WL1EU
AV-32WL1EI
AV-32WL1EK
CONTENTS
!SPECIFICATIONS ・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・
・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・
・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ ・・・・・・・・・・・・・・・・・・・・・・・・・・・・・
・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・
・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ 2
!SAFETY PRECAUTIONS ・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・
・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・
・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ ・・・・・・・・・・・・・・・・・・・・・・・
・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・
・・・・・・・・・・・・・・・・・・・・・・・ 4
!FEATURES / FUNCTIONS ・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・
・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・
・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ ・・・・・・・・・・・・・・・・・・・・・・
・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・
・・・・・・・・・・・・・・・・・・・・・・ 6
!MAIN DIFFERENCE PARTS LIST・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・
・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・
・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ ・・・・・・・・・・・・・・・・・
・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・
・・・・・・・・・・・・・・・・・ 8
!SPECIFIC SERVICE INSTRUCTIONS ・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・
・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・
・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ ・・・・・・・・・・・・
・・・・・・・・・・・・・・・・・・・・・・・・
・・・・・・・・・・・・ 10
!SERVICE ADJUSTMENTS ・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・
・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・
・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ ・・・・・・・・・・・・・・・・・・・・・
・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・
・・・・・・・・・・・・・・・・・・・・・ 16
★
STANDARD CIRCUIT DIAGRAM (APPENDIX) ・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・
・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・
・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ ・・・・・
・・・・・・・・・・
・・・・・ 2-1
!PARTS LIST・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・
・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・
・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ ・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・
・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・
・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ ・
・・
・35
SERVICE MANUAL
COLOUR TELEVISION
BASIC CHASSIS
MD

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SPECIFICATIONS
Content
Item AV-32WL1EU
AV-32WL1EI AV-32WL1EK
Dimensions ( W×
××
×H×
××
×D ) 901mm×556mm×557mm 901mm×556mm×557mm
Mass 54.7kg 54.7kg
TV RF System CCIR B/G, I, D/K, L CCIR I
Colour System PAL / SECAM
NTSC 3.58 / 4.43(Play back only)
PAL
NTSC3.58 / 4.43(Play back only)
Stereo System A2 / (B/G, D/K) , NICAM (B/G, I, D/K, L ) NICAM(I)
Teletext System Fastext(United Kingdom system)
TOP(German system)
WST(Standard system)
Fastext(United Kingdom system)
WST(Standard system)
Receiving Frequency VHF 47MHz~470MHz
UHF 470MHz~862MHz 470MHz~862MHz
French CATV 116MHz~172MHz / 220MHz~469MHz
Intermediate Frequency
VIF Carrier 38.9MHz(B/G, D/K, I, L) / 34.10MHz(Ľ) 39.5MHz(I)
SIF Carrier 33.4MHz(5.5MHz : B/G) / 32.9MHz(6.0MHz : I) /
32.4MHz(6.5MHz : L, D/K) / 40.6MHz(6.5MHz : Ľ)33.5MHZ(6.0MHz : I)
Colour Sub Carrier PAL 4.43MHz 4.43MHz
SECAM 4.40625MHz / 4.25MHz
NTSC 3.58MHz / 4.43MHz 3.58MHz / 4.43<Hz
Power Input AC 220V~240V , 50Hz
Power Consumption 195W(Max), 145W(Avg)
Picture Tube Visible size : 76cm, Measured diagonally
High Voltage 31.5kV (at zero beam current)
Speaker 16cm×4cm oval×2
Audio Output 7.5W+7.5W
EXT-1/EXT-2/EXT-3
(Input / Output) 21-pin Euro connector (SCART socket)
Video 1Vp-p 75Ω(RCA pin jack)
Audio(L/R) 500mVrms(-4dBs), High Impedance(RCA pin jack)
EXT4 (Input)
S-VIDEO Y : 1Vp-p Positive (negative sync provided, when
terminated with 75Ω)
C : 0.286Vp-p (burst signal, when terminated with
75Ω)
AUDIO OUT Variable 0-1 Vrms, low impedance
Aerial Input 75Ωunbalanced, Coaxial
Headphone jack Stereo mini jack (φ3.5mm )
Remote Control Unit RM-C54 (AAA/R03 dry battery×2 : AV-32WL1EU)
RM-C55 (AAA/R03 dry battery×2 : AV-32WL1EI) RM-C55 (AAA/R03 dry battery×2)
Design & specifications are subject to change without notice.
+1kV
-1.5kV

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■
■■
■21-pin Euro connector (SCART socket) : EXT-1 / EXT-2 / EXT-3
(P-P= Peak to Peak, S-W= Sync tip to white peak, B-W= Blanking to white peak)
No. Signal Designation Matching Value EXT-1 EXT-2 EXT-3
1 AUDIO R output 500mVrms(Nominal),
Low impedance ○
(TV OUT) ○
(LINE OUT) NC
2 AUDIO R input 500mVrms(Nominal),
High impedance ○○
○
3 AUDIO L output 500mVrms(Nominal),
Low impedance ○
(TV OUT) ○
(LINE OUT) NC
4 AUDIO GND ○○○
5 GND (B) ○○○
6 AUDIO L input 500mVrms(Nominal),
High impedance ○○○
7Binput 700mVB-W, 75Ω○NC NC
8FUNCTON SW
(SLOW SW) Low : 0-3V, High : 8-12V, High
impedance ○○○
9 GND (G) ○○○
10 SCL3 NC ○
(T-V LINK) NC
11 G input 700mVB-W, 75Ω○NC NC
12 SDA3 NC ○NC
13 GND (R) ○○○
14 GND (YS)○NC NC
15 R / C input R : 700mVB-W, 75Ω
C : 300mVP-P, 75Ω
○
(only R) ○
(only C) ○
(only C)
16 Ys input Low : 0 - 0.4, High : 1 - 3V, 75Ω○NC NC
17 GND(VIDEO output) ○○○
18 GND(VIDEO input) ○○○
19 VIDEO output 1VP-P(Negative going sync), 75Ω○
(TV) ○
(LINE OUT) NC
20 VIDEO / Y input 1VP-P(Negative going sync), 75Ω○○○
21 COMMON GND ○○○
[PIN ASSINGMENT]

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SAFETY PRECAUTIONS
1. The design of this product contains special hardware and 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 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 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 the 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. 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 should 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.
AV-32WL1EI / AV-32WL1EK

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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.).
0.15
μ
F AC-TYPE
1500
!
10W
GOOD EARTH GROUND
PLACE THIS PROBE
ON EACH EXPOSED
METAL PART
AC VOLTMETER
(HAVING 1000
!
/V,
OR MORE SENSITIVITY)
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FEATURES
"By preference, users can select the picture size from REGULAR,
PANORAMIC, 14:9 ZOOM, 16:9 ZOOM, 16:9 ZOOM SUBTITLE,
FULL modes. When the TV unit received WSS picture signal, the
picture can be changed to 16:9 mode automatically.
"The TELETEXT SYSTEM has a built-in Fastext, TOP and WST
system (TOP systems are except for AV-32WL1EK).
"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.
"In accordance with the brightness in a room, the brightness
and/or contrast of the picture can be adjusted automatically to
make the optimum picture which is easy on the eye.
"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.
"Built-in T-V LINK.
FUNCTIONS-Ⅰ
ⅠⅠ
Ⅰ
EXT TERMINAL SWITCHING SYSTEM
TV EXT-1 EXT-3
EXT-2
EXT-4
①MUTING key
②NUMBER key
③ZOOM key
④HYPER SOUND key
⑤INFORMATION key
⑥TV key
⑦VOLUME -/+ key (FUNCTION LEFT/RIGHT key)
⑧STANDBY key
⑨COLOUR buttons key
⑩OK / MENU key
⑪PR∧/∨key (FUNCTION UP/DOWN key)
⑫VCR/TELETEXT/DVD control key
⑬VCR/TELETEXT/DVD key

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FUNCTIONS-Ⅱ
ⅡⅡ
Ⅱ
■
■■
■FRONT PANEL & SIDE CONTROL JACK
■
■■
■REAR PANEL
1
11
1Remote control sensor
2
22
2ECO sensor
3
33
3Power lamp
4
44
4Main power button
5
55
5Head phone jack
6
66
6P △
△△
△/▽
▽▽
▽button (-/+ buttons)
7
77
7Volume button
8
88
8EXT-4 terminal (S, V, L, R)
1
11
12
22
23
33
34
44
45
55
56
66
67
77
78
88
8
9
99
9Aerial socket
⑩
⑩⑩
⑩EXT-1 terminal
⑪
⑪⑪
⑪EXT-2 terminal
9
99
9⑩
⑩⑩
⑩⑪
⑪⑪
⑪⑫
⑫⑫
⑫
⑬
⑬⑬
⑬
⑫
⑫⑫
⑫EXT-3 terminal
⑬
⑬⑬
⑬AUDIO OUT terminal

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MAIN DIFFERENCE PARTS LIST
!
!!
!
Model Name
Part Name AV-32WL1EU AV-32WL1EI AV-32WL1EK
MAIN PWB SMD-1006A-U2 ←SMD-1903A-U2
IF PWB SMD0F003A-U2 ←SMD0F903A-U2
!POWER CORD QMPK160-185-JC QMPN130-185-JC ←
!RATING LABEL LC20379-006A-U
LC20380-006A-U LC20080-009A-U LC20075-030A-U
REMOCON UNIT RM-C54-1C RM-C55-1C ←
EURO LABEL AEM1039-093-E AEM1052-002-E AEM1052-001-E
WARNING LABEL LC30789-002A-U
!INST BOOK LCT0803-001A-U
LCT0804-001A-U
LCT0805-001A-U LCT0807-001A-U LCT0806-001A-U
X-RAY CARD AEM1054-001-E
S. DIAGRAM 32WL1EU-HSAE

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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 part after removing it.
!SOLDERING IRON
1. Use a high insulation soldering iron with a thin pointed end of it.
2. A 30w soldering iron is recommended for easily removing parts.
!REPLACEMENT STEPS
1. How to remove Chip parts
#
##
#Resistors, capacitors, etc
(1) As shown in the figure, push the part with tweezers and
alternately melt the solder at each end.
(2) Shift with tweezers and remove the chip part.
#
##
#Transistors, diodes, variable resistors, etc
(1) Apply extra solder to each lead.
(2) As shown in the figure, push the part with tweezers and
alternately melt the solder at each lead. Shift and remove the
chip part.
Note : After removing the part, remove remaining solder from the
pattern.
2. How to install Chip parts
#
##
#Resistors, capacitors, 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.
Then heat and melt the solder at both ends of the 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 Aas indicated in the figure.
(4) Then solder leads
Band C.
SOLDER SOLDER
AB
C
A
B
C

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SPECIFIC SERVICE INSTRUCTIONS
DISASSEMBLY PROCEDURE
REMOVING THE REAR COVER
1. Unplug the power cord plug from wall outlet.
2. As shown in Fig.4, remove the 11 screws marked A
AA
A.
3. Withdraw the REAR COVER toward you.
REMOVING THE CHASSIS BASE
"After removing the REAR COVER.
1. Slightly raise the both sides of the chassis base by hand and
remove the 2 claws under the both sides of the chassis base
from the FRONT CABINET.
2. Withdraw the chassis base backward.
(If necessary, take off the wire clamp, connectors etc.)
REMOVING THE AV BOARD
"After removing the REAR COVER.
1. As shown in Fig.4, remove the 4screws marked B
BB
B.
2. As shown in Fig.1, remove the claws marked C
CC
Cunder the
chassis.
3. As shown in Fig.1, while raising the claw marked D
DD
D, remove
the top of the AV BOARD slightly in the direction of arrow E
EE
E.
REMOVING THE SPEAKER BOX
"After removing the REAR COVER.
1. As shown in Fig.4, remove the 2screws marked F
FF
F, then
remove the SPEAKER BOX from FRONT CABINET.
2. Follow the same steps when removing the other hand SPEAKER
BOX.
REMOVING THE CONTROL BASE
"After removing the CHASSIS.
1. As shown in Fig.2, while pushing down the claws marked G
GG
G,
remove the CONTROL BASE in the arrow direction H
HH
H.
REMOVING THE FRONT COVER
"After removing the REAR COVER.
1. As shown in Fig.3, remove the 12 claws, marked J
JJ
J.
2. Withdraw the FRONT COVER forward front.
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.
WIRE CLAMPING AND CABLE TYING
1. Be sure to clamp the wire. 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.
E
EE
E
D
DD
DC
CC
C
C
CC
C
AV BOARD
AV TERMINAL
PWB
Fig.1
G
GG
G
H
HH
HCONTROL BASE
CHASSIS
Fig.2Fig.3
FRONT
CABINET
FRONT
COVER
J
JJ
J
J
JJ
J

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This exploded view describes about AV-32WL1EU.
A
lthough AV-32WL1EI/EK has some different from this
figure, you can use the exploded view for disassembling the
A
V-32WL1EU in the same steps.
Fig.4
FRONT CABINET
CRT
SPEAKER
A
DAPTER
F
FF
F
CRT SOCKET PWB
SPEAKER
SPEAKER BOX
POWER & DEF PWB
CLAW
CLAW
SUB MICON & AUTO
PANORAMA PWB
Fig.2
FRONT
CONTROL
PWB
100Hz PWB
AV TERMINAL PWB
BBE PWB
AV BOARD
IF PWB
MAIN PWB B
BB
B
POWER
CORD
SIDE CONTROL
JACK PWB
SPEAKER
ADAPTER
SPEAKER
SPEAKER BOX
REAR COVER
SCREW CAP
SCREW CAP
F
FF
F
A
AA
A
CHASSIS BASE

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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.5).
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 screw
driver as shown in Fig.6.
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.7.
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.
COATING OF SILICON GREASE FOR ELECTRICAL
INSULATION ON THE CRT ANODE CAP SECTION.
Subsequent to replacement of the CRT and HV transformer or
repair of the anode cap, etc. by dismounting them, be sure to
coat silicon grease for electrical insulation as shown in Fig.8.
Wipe around the anode button with clean and dry cloth. (Fig.8)
Coat silicon grease on the section around the anode button. At
this time, take care so that any silicon greases dose not stick to
the anode button. (Fig.9)
★
★★
★Silicon grease product No. KS - 650N
CRT CHANGE TABLE
CLOTH
A
PPROX.
35cm
CRT
CRT
CHANGE
TABLE BOX
TYPE
SCREW
DRIVER
Fig. 5
Fig. 6
Fig. 7
CRT
CABINET CRT
CHANGE TABLE
Fig. 8 Fig. 9
A
pprox.
20mm (Do not
coat grease on
this section
Silicon grease
should be coated
by 5mm or more
from the outside
diameter of
anode cap.
A
node button
(No sticking of
silicon grease) Coating position
of silicon grease
A
node cap
A
node button
CRT
Silicon grease
coating

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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, be sure to
use ICs written with the initial values of data.
2. Procedure for replacing memory ICs
PROCEDURE
(1) Power off
Switch off the power and disconnect the power plug from the wall
outlet.
(2) Replace the memory IC
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 INFORMATION key and the MUTING 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
INFORMATION key and MUTING 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
FUNCTION UP/DOWN key, and set the correct value with the
FUNCTION LEFT/RIGHT key.
5) Press the
OK key to memorize the setting value.
6) Press the
INFORMATION key twice, and return to the normal
screen.
(5) Receive channel setting
Refer to the OPERATING INSTRUCTIONS, and set the receive
channels as described.
(6) User settings
Check the user setting items according to Table 2.
Where these do not agree, refer to the OPERATING
INSTRUCTIONS.
(7) SERVICE MENU setting
Verify what to set in the SERVICE MENU, and set whatever is
necessary.
For setting, refer to the SERVICE ADJUSTMENTS.
SERVICE MENU
SERVICE MENU
1.IF 2.V/C
3.AUDIO 4.DEF
5.VSM PRESET 6.STATUS
7.PIP 8.TEXT
9.SHIPPING(OFF)
1-9 : SELECT :EXIT
Fig.1
SYSTEM CONSTANT SET
SYSTEM CONSTANT SET
SOFT VER.=(V*.****)
COUNTRY :**
INCH :**
PIP : NO
ALC : NO
PURITY : NO
- / + :STORE :EXIT
OK
********-*****
JVC MD CHASSIS V**
Fig.2
KEY ASSIGNMENT OF REMOTE CONTROL UNIT
MUTING key
INFORMATION
ke
y
(VOLUME -/+ key)
OK/MENU key
UP/DOWN key
FUNCTION
LEFT/RIGHT key FUNCTION
(PR ∧
∧∧
∧/
///∨
∨∨
∨key)

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SETTING VALUES OF SYSTEM CONSTANT SET (TABLE 1)
Setting value
Setting item Setting content AV-32WL1EU
AV-32WL1EI AV-32WL1EK
COUNTRY EU / EI EK
INCH 32
PIP NO
ALC NO
PURITY NO
USER SETTING VALUES (TABLE 2)
Setting item Setting value Setting item Setting value
SUB POWER ON VOLUME Appropriate sound volume
CHANNEL 1 POSITION DISPLAY CHANNEL NUMBER DISPLAY
CHANNEL PRESET See OPERATING INSTRUCTUONS. ZOOM REGULAR
PICTURE SETTING EXT SETTING
TINT
CONTRAST
BRIGHT
SHARP
COLOUR
HUE
ECO MODE
COOL
All CENTER
OFF
DUBBING EXT1→EXT2
PICTURE FEATURES FEATURES
DIGITAL VNR
DigiPure
COLOUR SYSTEM
4:3 AUTO ASPECT
PICTURE TILT
AUTO
AUTO
TV : According to preset CH
EXT : AUTO
PANORAMIC
CENTER
SLEEP TIMER
BLUE BACK
CHILD LOCK
DECORDER(EXT-2)
OFF
ON
ID : No.0000
ALL CH OFF
OFF
SOUND SETTING INSTALL
LANGUAGE
AUTO PROGRAM
EDIT / MANUAL
ENGLISH
INDEX
STEREO /Ⅰ・Ⅱ
BASS
TREBLE
BALANCE
BBE
HYPER SOUND
SPEAKER
(STEREO SOUND)
CENTER
ON
OFF
ON
DEMO
ENEK
29
32
28
EP EU/EI
ER
YES NO
YES NO
YES NO

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SERVICE MENU SETTING ITEMS (TABLE 3)
Setting item Setting value Setting item Setting value
1. IF 1.VCO
2.DELAY POINT
3.LV LEVEL
5. VSM PRESET
COOL
NORMAL
WARM
1. BRIGHT
2. CONT
3. COLOUR
4. SHARP
5. HUE
6. WDR R
7. WDR G
8. WDR B
9. BASS
10. TREBLE
2. V / C 1. RGB BLK
2. WDR R
3. WDR G
4. WDR B
5. CUT R
6. CUT G
7. CUT B
8. BRIGHT
9. CONT.
10. COLOUR
11. HUE
12. CONT LIMIT
6. STATUS
(Do not adjust) VPS
PDC 8/30/L
AUTO
SUB
SUB VER
MTEXT
3. AUDIO
(Do not adjust)
1. CONC LIMIT
2. A2 ID THR 7. PIP
(Do not adjust)
This model doesn’t have PIP
function. It is no requirement for
adjustment.
8. TEXT 1.TEXT MONO H4. DEF. 1. V-SHIFT
2. V-SIZE
3. H-CENT
4. H-SIZE
5. EW-PIN
6. TRAPEZ
7. COR-UP
8. COR-LO
9. ANGLE
10. BOW
11. V-S.CR
12. V-LIN
9. SHIPPING
(Do not adjust) OFF
ON

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SERVICE ADJUSTMENTS
BEFORE STARTING SERVICE ADJUSTMENT
1. There are 2 ways of adjusting this TV: One is with the
REMOTE CONTROL UNIT and the other is the conventional
method using adjustment parts and components.
2. The adjustment with the REMOTE CONTROL UNIT is made
on the basis of the initial setting values. The setting values
which adjust the screen to its optimum condition may differ
from the initial setting values.
3. Make sure that connection is correctly made to AC power
source.
4. Turn on the power of the set and equipment before use, and start
the adjustment procedures after waiting at least 30 minuets.
5. Unless otherwise specified, prepare the most suitable reception
or input signal for adjustment.
6. Never touch any adjustment parts, which are not specified in
the list for this adjustment variable resistors, transforms,
condensers, etc.
7. Preparation for adjustment (presetting):
Unless otherwise specified in the adjustment instructions, preset
the following functions with the REMOTE CONTROL UNIT:
User mode setting condition
PICTURE SETTING TINT COOL
CONTRAST CENTER
BRIGHT CENTER
SHARP CENTER
COLOUR CENTER
HUE CENTER
DIGITAL VNR OFF
DIGI PURE AUTO
4:3 ASPECT PANORAMIC
PICTURE TILT CENTER
BBE OFF
HYPER SOUND OFF
SPEAKER ON
ZOOM FULL
SLEEP TIMER OFF
BLUE BACK OFF
ECO MODE OFF
MEASURING INSTRUMENT AND FIXTURES
1. DC voltmeter (or digital voltmeter)
2. Oscilloscope
3. Signal generator (Pattern generator) [PAL / SECAM / NTSC]
4. Remote control unit
ADJUSTMENT ITEMS
●CHECK ITEMS BEFORE ADJUSTMENT
●FOCUS ADJUSTMENT
●IF CIRCUIT ADJUSTMENT
●VSM PRESETTING
●VIDEO / CHROMA CIRCUIT ADJUSTMENT
●DEFLECTION CIRCUIT ADJUSTMENT
●TEXT CIRCUIT ADJUSTMENT
●AUDIO CIRCUIT ADJUSTMENT (Do not adjust)

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ADJUSTMENT LOCATIONS
FRONT CONTROL PWB
CN016
W
F901
PW
E1
TP-47B
CN014
CN013
TP-E
CRT SOCKET PWB(SOLDER SIDE)
TOP
IF PWB TOP
IC010
S.L-VL CW
P.CW
S.CW
P.L-VL CW
CN003
MAIN PWB POWER&DEF PWB
CN008
AV TERMINAL
PWB
CN001
BBE PWB
IF PWB
TUNER
CN007
CN002
IC701 IC703
MEMORY
SDEG
51
X
HV
100Hz PWB
SUB MICON & AUTO
PANORAMA PWB
F
SCREEN1
FOCUS2
FOCUS1
FRONT FRONT
FRONT
POWER
SW
CN002
TOP
SIDE CONTROL JACK PWB
1pin:B1(TP-91)
2pin:NC
3pin:NC
4pin:NC
5pin:GND(TP-E)

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BASIC OPERATION OF SERVICE MENU
1. The adjustment using SERVICE MENU
The following adjustment items use the SERVICE MENU in the series of the adjustment. The adjustments are made on the basis of the
initial setting values. The adjustment values which adjust the screen to the optimum condition can be different from the initial setting values.
With the SERVICE NEMU, various settings can be made, and they are broadly classified in the following items of settings.
IF ・・・・・・・・・・・・・・・・・・・・・・・・・ Adjustment of the IF circuits.
V/C ・・・・・・・・・・・・・・・・・・・・・・・ Adjustment of the VIDEO/CHROMA circuit.
AUDIO ・・・・・・・・・・・・・・・・・・・・ Adjustment of the sound circuit [Do not adjust].
DEF・・・・・・・・・・・・・・・・・・・・・・・ Adjustment of the DEFLECTION circuit for each aspect mode given below.
FULL (100/120Hz) 16:9 ZOOM SUBTITLE (100/120Hz)
PANORAMIC (100/120Hz)
VSM PRESET ・・・・・・・・・・・・・・ Adjustment of the initial setting values of VSM condition as COOL, NORMAL and WARM.
(VSM : Video Status Memory)
STATUS・・・・・・・・・・・・・・・・・・・ Shows the monitor of the VPS [Do not adjust].
(VPS : Video Program System)
PIP・・・・・・・・・・・・・・・・・・・・・・・・ Adjustment of the PIP circuit. But this model does not build in PIP system, because do not adjust.
TEXT・・・・・・・・・・・・・・・・・・・・・・ Adjustment of the TEXT mode.
SHIPPING ・・・・・・・・・・・・・・・・・ Setting the user setting values to initial condition [Do not adjust].
2. Key operation of the SERVICE MENU
[Enter to SERVICE MENU]
Press the INFORMATION key and the MUTING key of the REMOTE CONTROL UNIT
simultaneously. Then enter the SERVICE MENU mode as shown in Fig.1.
[Exit from SERVICE MENU]
When complete the adjustment work, press the INFORMATION key to return to the
SERVICE MENU.
And then press the INFORMATION key again, return to the normal screen.
[Select from main menu]
In main SERVICE MENU, press the number (1~9) key of the remote control unit, to
select any of the adjustment items.
The colours which selected item characters are changed.
SERVICE MENU
SERVICE MENU
1.IF 2.V/C
3.AUDIO 4.DEF
5.VSM PRESET 6.STATUS
7.PIP 8.TEXT
9.SHIPPING(OFF)
1-9 : SELECT :EXIT
①MUTING key
②NUMBER key
③ZOOM key
④HYPER SOUND key
⑤INFORMATION key
⑥TV key
⑦VOLUME -/+ key (FUNCTION LEFT/RIGHT key)
⑧STANDBY key
⑨COLOUR buttons key
⑩OK / MENU key
⑪PR∧/∨key (FUNCTION UP/DOWN key)
⑫VCR/TELETEXT/DVD control key
⑬VCR/TELETEXT/DVD key

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[Method of setting]
1. IF
[1. VCO]
①1 Key・・・・・・・・・・・・・・・・・・・・・・・・・・ Select 1.IF.
②1 Key・・・・・・・・・・・・・・・・・・・・・・・・・・ Select 1.VCO
③The VCO (CW) screen will be displayed a allow mark when the AFC voltage is at a certain level.
④INFORMATION Key ・・・・・・・・・・・・・ As you press this twice, you will return to the SERVICE MENU.
[2. DELAY POINT]
①1 Key・・・・・・・・・・・・・・・・・・・・・・・・・・ Select 1.IF.
②2 Key・・・・・・・・・・・・・・・・・・・・・・・・・・ Select 2.DELAY POINT.
③FUNCTION LEFT/RIGHT ・・・・・・・・ Set (adjust) the setting values of the setting items.
④OK Key・・・・・・・・・・・・・・・・・・・・・・・・ Memorize the set value.
(Before storing the setting values in memory, do not press the CH, TV, POWER ON / OFF
keys - if you do, the values will not be stored in memory.)
⑤INFORMATION Key ・・・・・・・・・・・・・ When this is pressed twice, you will return to the SERVICE MENU.
[3. LV LEVEL]
①1 Key・・・・・・・・・・・・・・・・・・・・・・・・・・ Select 1.IF.
②3 Key・・・・・・・・・・・・・・・・・・・・・・・・・・ Select 3.LV LEVEL.
③FUNCTION LEFT/RIGHT Key・・・・・ Set (adjust) the setting values of the setting items.
④OK Key ・・・・・・・・・・・・・・・・・・・・・・・・ Memorize the set value.
(Before storing the setting values in memory, do not press the CH, TV, POWER ON / OFF keys
- if you do, the values will not be stored in memory.)
⑤INFORMATION Key ・・・・・・・・・・・・・ When this is pressed twice, you will return to the SERVICE MENU.
2.V/C, 4.DEF, 5.VSM PRESET and 8.TEXT
①2, 4, 5, 8 Key ・・・・・・・・・・・・・・・・・・・ Select one from 2. V/C, 4. DEF, 5. VSM PRESET and 8.TEXT.
②FUNCTION UP/DOUN Key ・・・・・・・ Select setting items.
③FUNCTION LEFT/RIGHT・・・・・・・・・ Set (adjust) the setting values of the setting items.
(When 1.RGB BLK of 2.V/C is selected, press the FUNCTION-/+ key, and the whole will
change to a black picture. Press the FUNCTION-/+ or 2 key, and the screen will return to the
original screen.)
④OK Key ・・・・・・・・・・・・・・・・・・・・・・・・ Memorize the setting value.
(Before storing the setting values in memory, do not press the CH, TV, POWER ON / OFF key -
if you do, the values will not be stored in memory.)
⑤INFOMATION Key・・・・・・・・・・・・・・・ Return to the SERVICE MENU screen.
3.AUDIO, 6.STATUS and 9.SHIPPING
3.AUDIO (Do not adjust) ・・・・・・・・・・ It is no requirement to adjustment.
6.STATUS (Do not adjust)・・・・・・・・・ This mode displayed monitor of VPS. (Video Program Systems)
9.SHIPPING (Do not adjust) ・・・・・・・ This mode is set the initial setting value of user setting values, you need not to use it for service.

No. 51733
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SUB MENU 1. IF
IF
1. VCO
2. DELAY POINT
3. LV LEVEL
1-3 : SELECT : EXIT
COOL
NORMAL
WARM
1. BRIGHT
2. CONT
3. COLOUR
4. SHARP
5. HUE
6. WDR R
7. WDR G
8. WDR B
9. BASS
10. TREBLE
1. RGB BLK 10.COLOUR
2. WDR R 11.HUE
3. WDR G 12.CONT LIMIT
4. WDR B
5. CUT R
6. CUT G
7. CUT B
8. BRIGHT
9. CONT.
1. CONC LIMIT
2. A2 ID THR
1. V-SHIFT
2. V-SIZE
3. H-CENT
4. H-SIZE
5. EW-PIN
6. TRAPE
7. COR-UP
8. COR-LO
9. ANGLE
10. BOW
11. V-S.CR
12. V-LIN
SUB MENU SCREEN
SERVICE MENU
SUB MENU 5. VSM PRESET
VSM PRESET NORMAL
1.BRIGHT ***
-/+ : STORE : EXIT
OK
VCO (CW)=MAIN *
**
**
**
**
**
*.
..
.*
**
**
**
*
MHz
TOO HIGH
ABOVE REF
JUST REF
BELOW REF
TOO LOW
: EXIT
SUB MENU 6. STATUS (Do not adjust)
STATUS
VPS = *****(---)
PDC 8 / 30 / 1 = *****
AUTO = ********
SUB = ********
SUB VER ******
MTEXT **** : EXIT
V/C PAL
1.RGB BLK
-/+ : STORE : EXIT
SUB MENU 2. V/C
AUDIO
-/+ : STORE : EXIT
SUB MENU 3. AUDIO(Do not adjust)
1. CONC LIMIT 0AH
C AD BITS = 00000000
OK
DEF FULL *
**
**
**
**
**
*Hz
1. V-SHIFT ****
(****)
-/+ : STORE : EXIT
SUB MENU 4. DEF
OK
DELAY POINT
AGC TAKE-OVER
MAIN **
-/+ : STORE : EXIT
OK
SERVICE MENU
1. IF 2. V/C
3. AUDIO 4. DEF
5. VSM PRESET 6. STATUS
7. PIP 8.TEXT
9. SHIPPING(OFF)
1-9 : SELECT : EXIT
MAIN
L.V. LEVEL
MAIN **
-/+ : STORE : EXIT
OK
3. LV LEVEL
1. VCO
2. DELAY POINT
OK
SUB MENU 9. SHIPPING (Do not adjust)
9. SHIPPING (OFF)
TEXT
1. TEXT MONO H ***
- + : STORE : EXIT
SUB MENU 8. TEXT
OK
This manual suits for next models
2
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