JVC AV-32WP2EN User manual

AV-32WP2EN
AV-32WP2EP
JVC
ERVICE MANUA
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AV-32WP2EN
e AV-32WP2EP
CONTENTS
@ SPECIFICATIONS ----- esc e etter teeter eee nent e reece nee e ene seeneeneeeseneeee
™@ SAFETY PRECAUTIONS --+<- cert tert etter eee erence eens ee enn eeenenseneeee
@ SPECIFIC SERVICE INSTRUCTIONS
m DISASSEMBLY PROCEDURE -------+*+*rrert es: PrTrree Tre ree eee ee
@ SERVICE ADJUSTMENTS <««ccc ctr ett terete cece ete ene eeneeeennecessscanee |
M MAIN PARTS LIST: --<ctr rece tcc tet te eee eee e ence ee eeeeseneceenrsssarssaaes 2G
3k STANDARD CIRCUIT DIAGRAM <--es secretes etter erent tne e ere t eee e ene enees Qaf
oN OH & BD
No. 51237
COPYRIGHT © 1997 VICTOR COMPANY OF JAPAN, LTD. Aug. 1997

AV-32WP2EN
AV-32WP2EP
SPECIFICATIONS
Dimensions (WxHxD) 805mm x 550mm x 550mm
Mass 54.8kg
TV RF System CCIR(B/G,I,L) EN MODEL:B/G ONLY
Colour System PAL / SECAM / NTSC( Only in EXT mode )
Stereo System A2/NICAM
Teletext System TOP/FLOF
Receiving Frequency
VHF | 47MHz~ 470MHz
UHF | 470MHz~862MHz
Intermediate Frequency
VIF Carrier | 38.9MHz( B/G,I,L ) EN MODEL:B/G ONLY
SIF Carrier | 33.4( 5.SMHz ),33.5(6.0MHz) EN MODEL: 5.5MHz ONLY
Colour Sub Carrier Freq.
PAL | 4.43MHz
SECAM | 4.0625MHz / 4.25MHz
NTSC | 3.58MHz / 4.43MHz
Power Input AC 220V~240V , 50Hz
Power Consumption 266W( Max ) /161W( Avg )
Picture Tube Visible size : 76cm, Measured diagonally
High Voltage 31.0Kv +1kV (at Zero beam current)
-1.5kV
Speaker 10cm round (82) x2
Audio Output 20W + 20W
EXT-1/EXT-2/EXT-3 21-pin Euro connector( SCART socket )
(Input/Output)
EXT4(Input) Video | 1Vp-p 75Q( RCA pin jack )
Audio(U/R) | SoomVrms( -4dBs ), High Impedance ( RCA pin jack )
Aerial Input Term 75 Q unbalanced, Coaxial
Headphone jack Stereo mini jack (¢3.5mm )
Remote Control Unit RM-C791
AAA( RO3 ) dry battery x 2
Design & specification are subject to change without notice.
%* Manufactured under license from Dolby Laboratories Licensing Corporation.
“Dolby” and the double-D symbol [][] are trademarks of Dolby Laboratories Licensing Corporation.
2 No.51237

AV-32WP2EN
AV-32WP2EP
@ 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)
[| sowvcimmn [weave [oes [ea [oe
AUDIO R output S00mVrms(Nominal), Oo Oo NC
res mipeganece (TV OUT) (LINE OUT)
2 AUDIO R input 500mVrms(Nominal),
High impedance
AUDIO L output 500mVrms(Nominal), oO
Poe mEerence (TV OUT) (LINE OUT)
2
a
eetiet rermeme |
High impedance
Froomvew.76@ ——+| =O —*
iese Oi]
wo
FUNCTON SW Low : 0-3V, High : 8-12V,
(SLOW
SW)
High
impedance
Oo
cn
- NC
oO
0m
Sa
Fn
Se
Sa
Ea eee
NC
NC
14 [6ND
O
NC
Cc
NC
NC
R/C input R : 700mVew, 752 O oO
C : 300MVp.p, 752 {only R) (only C) (only C)
Ys input Low : 0 - 0.4, High : 1 - 3V,
75Q
7 | GND(VIDEO output)
re Se
VIDEO output 1Vsw(Negative going sync), Oo Oo N
7SQ (TV) (LINE OUT)
7 ‘ ~ so aA oe kee ee
75Q
nN
=
[Pin assignment]
20 18 16 14 12 10 8 6 4 2
UOUUUOUUUU
WOUUOUUUUUUO
21°19 17 15 13°14 9 7 5
No.51237 3

AV-32WP2EN
AV-32WP2EP
scouted PRCATIONS
The design of this product contains special hardware, many
circuits and components speciaily 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.
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.
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 voitage, 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 (A\) 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.
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 : (.L) 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.
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).
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
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.).
@ 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 15002 10W resistor paralleled by a 0.15uF
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 0.35V AC (r.m.s.). This corresponds to 0.5mA
AC (r.m.s.).
AC VOLTMETER
(HAVING 1000 2/V,
OR MORE SENSITIVITY)
voltage conditions should be kept to a minimum, or should be PLACE THIS PROBE
prevented. If severe arcing occurs, remove the AC power ON EACH EXPOSED
1500 Q 10W METAL PART
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.
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 10kQ 2W resistor to the anode button.
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.
No.51237
GOOD EARTH GROUND

AV-32WP2EN
AV-32WP2EP
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. Donot 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 2. How to instal! Chip parts
@ Resistors, capacitors, etc @ Resistors, capacitors, etc
(1) As shown in the figure, push the part with tweezers and (1) Apply solder to the pattern as indicated in the figure.
alternately melt the solder at each end.
_f
(2) Grasp the chip part with tweezers and place it on the solder.
(2) Shift with tweezers and remove the chip part. Then heat and melt the solder at both ends of the chip part.
@ Transistors, diodes, variable resistors, etc @ Transistors, diodes, variable resistors, etc
(1) Apply extra solder to each lead. (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 A as indicated in the figure.
A
B
Cc
(4) Then solder leads B and C.
A
B
Cc
No.51237 5
SOLDER SOLDER
(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.

AV-32WP2EN
AV-32WP2EP
FEATURES
@ By preference, users can select the picture size from
PANORAMIC, REGULAR, FULL, 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 TOP and FLOF system.
@ Thanks to the newly employed DSP control micro computer,
users can select 3D-PHONIC, and enjoy Surround effect at each
mode.
© 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 VTR dubbing of picture and sound by controlling
the AV selector to select an optional source at the EXT-2 output
shown in figure.
DISASSEMBLY PROCEDURE
REMOVING THE REAR COVER
1. Unplug the power cord.
2. Remove the 13 screws marked “A” as shown in the Fig. 1.
3. Withdraw the rear cover toward you.
REMOVING THE CHASSIS
@ After removing the rear cover.
1. Slightly raise the both sides of the chassis by hand and remove
the two 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.)
REMOVING THE AV TERMINAL BOARD
@ After removing the rear cover.
1. Remove the 6 screws marked “B” as shown in the Fig. 1.
2. While raising the claw marked “C” , remove the top of the AV
TERMINAL BOARD slightly in the direction of arrow “D” as
shown in Fig. 2.
REMOVING THE SPEAKER BOX
@ After removing the rear cover.
1, Remove the 2 screws marked “E” as shown in Fig. 1.
2. Follow the same steps when removing the other hand speaker
box.
NOTE: When removing the screws marked “E” of the speaker
box, remove the lower side screw first, and then remove
the upper screw.
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. Besure 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.
6 No.51237.

AV-32WP2EN
AV-32WP2EP
FRONT CABINET
REAR COVER
Fig. 1
No.51237 7

AV-32WP2EN
AV-32WP2EP
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.3). mae i: HY APPROX.
2. While keeping the surface of CRT down, mount the TV set on the Gi x Y
CRT change table balanced will as shown in Fig.4.
3. Remove 4 screws marked by arrows with a box type screw driver as
shown in Fig.4.
» 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.
» 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
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.6.
Wipe around the anode button with clean and dry cloth. (Fig.6)
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.7)
* Silicon grease product No. KS - 650N
CRT
Anode
button
Approx.
Silicon
grease
20mm
(Do
not
should
be
coated
coat
grease
on
by
S5mm
or
more
this
section
from
the
outside
diameter of
anode cap.
rf
Anode
button
Silicon
grease
(No
sticking
of
?
Coating
position
coating silicon grease) of silicon grease
Anode cap
Fig. 6 Fig. 7
8 J0.51237

REPLACEMENT OF MEMORY ICs
1. Memory ICs
This TV use memory ICs (EEP-ROM IC). In the memory ICs, there are
memorized data for correctly operating the video and deflection circuits.
When replacing memory ICs, be sure to use [Cs written with the initial
values of data.
2. Procedure for replacing memory ICs
PROCEDURE
Power off
Switch the power off and unplug the power code from the outlet.
Replace ICs.
Be sure to use memory ICs written with the initial data values.
Power on
Plug the power code into the outlet and switch the power on.
(4) Check and set SYSTEM CONSTANT SET:
1) Press the INFORMATION key and the MUTE 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, press the INFORMATION
key and MUTE key simultaneously, and the SYSTEM CONSTANT
SET screen of Fig. 2 will be displayed.
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 -/+ key.
Press the MENU key to memorize the setting value.
Press the INFORMATION key twice, and return to the normal
screen.
(5) Setting of receive channels
Set the receive channel.
For setting, refer to the OPERATING INSTRUCTIONS.
User settings
Check the user setting values of Table 2, and if setting value is
different, set the correct value.
For setting, refer to the OPERATING INSTRUCTIONS.
Setting of SERVICE MENU
Verify the setting items of the SERVICE MENU of Tabie 3, and reset
where necessary.
For setting, refer to the SERVICE ADJUSTMENTS.
No.51237
AV-32WP2EN
AV-32WP2EP
SERVICE MENU
SERVICE MENU
1. 1F 2. VIC
3. AUDIO 4. DEF
5. VSM PRESET 6. VPS
7. PIP
8. AUTO PROGRAM (OFF)
4-8: SELECT @: exit
Fig.1
SYSTEM CONSTANT SET
SYSTEM CONSTANT SET
SOFT VER.=(V*.**"*)
COUNTRY ‘EP
INCH 32
MODEL ‘wP2
-+ (x): STORE @: Exit
JVC MB WIDE VOO
M3720 7MF~XXXSP
Fig.2
[AV-32WP2EN]
NAME OF REMOTE CONTROL KEY
INFORMATION
MENU
FUNCTION UP/DOWN
FUNCTION -/+

AV-32WP2EN
AV-32WP2EP
SETTING VALUES OF SYSTEM CONSTANT SET (TABLE 1)
Setting item Setting content
COUNTRY > EN—»EP —»>EK
\
1.
2. INCH —p> 28» 32 -—p 24 —
3. MODEL > WP2 —--_» WZ2 —
USER SETTING VALUES (TABLE 2)
SUB POWER
CHANNEL 1 POSITION
See;OPERATING
EOUNE LP Eees INSTRUCTUONS.
VOLUME Appropriate sound volume |
DISPLAY CHANNEL DISPLAY
PROLOGIC
3D PHONIC
TV SPEAKER
ZOOM MODE REGULAR | TEST TONE
| DOLBY PRO
we or [soe | cenren
4:3 AUTO |
Aes PANORAMIC | INSTALL LANGUAGE ENGLISH
PICTURE
COLOR
TV:No
Setting
ID:NO
INPUT
FEATURE SYSTEM EXT:AUTO | SETTING S-IN:NO INPUT
EXT SOURCE
DUBBING EXT-1—-EXT-2
1D NO.0000
SHIED LOK all channel off
Posmion | UeperRant |
morure | ‘2rerures |
mor
ae
SPEAKER
HEAD
PHONE |
SOUND VOLUME
SETTING
FEATURES
MAIN |
HEAD
PHONE TV OFF
SPEAKER
DIGITAL SRROUND OFF
10 No.51237