JVC AV32X10EUS User manual

No.51780
A
V32X10EUS
A
V28X10EUS
A
V28X10EKS
A
V28X10EIS
1COPYRIGHT © 2001 VICTOR COMPANY OF JAPAN, LTD. May. 2001
AV32X10EUS
AV28X10EUS
AV28X10EKS
AV28X10EIS
CONTENTS
!SPECIFICATIONS ････････････････････････････････
････････････････････････････････････････････････････････････････
････････････････････････････････ ･････････････････････････････
･･････････････････････････････････････････････････････････
･････････････････････････････ 2
!SAFETY PRECAUTIONS(EU) ････････････････････････････････
････････････････････････････････････････････････････････････････
････････････････････････････････ ･･･････････････････
･･････････････････････････････････････
･･･････････････････ 4
!SAFETY PRECAUTIONS(EK/EI) ････････････････････････････････
････････････････････････････････････････････････････････････････
････････････････････････････････ ･････････････････
･･････････････････････････････････
･････････････････ 5
!FEATURES････････････････････････････････
････････････････････････････････････････････････････････････････
････････････････････････････････ ････････････････････････････････
････････････････････････････････････････････････････････････････
････････････････････････････････ ･･･
･･････
･･･ 6
!FUNCTIONS････････････････････････････････
････････････････････････････････････････････････････････････････
････････････････････････････････ ････････････････････････････････
････････････････････････････････････････････････････････････････
････････････････････････････････ ･･
････
･･ 6
!MAIN DIFFERENCE LIST ････････････････････････････････
････････････････････････････････････････････････････････････････
････････････････････････････････ ･･･････････････････････
･･････････････････････････････････････････････
･･･････････････････････ 7
!SPECIFIC SERVICE INSTRUCTIONS ････････････････････････････････
････････････････････････････････････････････････････････････････
････････････････････････････････ ･････････････
･･････････････････････････
･････････････ 8
!SERVICE ADJUSTMENTS ････････････････････････････････
････････････････････････････････････････････････････････････････
････････････････････････････････ ･････････････････････
･･････････････････････････････････････････
･････････････････････ 14
!PARTS LIST････････････････････････････････
････････････････････････････････････････････････････････････････
････････････････････････････････ ････････････････････････････････
････････････････････････････････････････････････････････････････
････････････････････････････････ ･
･･
･33
★
OPERATING INSTRUCTIONS
★
STANDARD CIRCUIT DIAGRAM ････････････････････････････････
････････････････････････････････････････････････････････････････
････････････････････････････････ ････････････････
････････････････････････････････
････････････････ 2-1
SERVICE MANUAL
COLOUR TELEVISION
BASIC CHASSIS
MF

No.51780
A
V32X10EUS
A
V28X10EUS
A
V28X10EKS
A
V28X10EIS
2
SPECIFICATIONS
Content
Item AV32X10EUS / AV28X10EUS AV28X10EKS / AV28X10EIS
(32”) : 85.5cm×55.0cm×56.8cm
Dimensions ( W×
××
×H×
××
×D )
(28”) : 78.0cm×50.9cm×49.9cm 78.0cm×50.9cm×49.9cm
Mass (32”) : 54.2kg / (28”) : 40.2kg 40.2kg
TV RF System CCIR ( B/G, D/K, L, L’,I) CCIR ( I )
Colour System PAL / SECAM / NTSC (Only in EXT mode) PAL / NTSC (Only in EXT mode)
Stereo System A2 (B/G, D/K) / NICAM (B/G, I, D/K, L) NICAM ( I )
Teletext System Fastext (UK system) / TOP (German system)
WST(world standard system) Fastext (UK system)
WST(world standard system)
VHF : 47MHz ～470MHz VHF : 47MHz ～470MHz ( EI model )
UHF : 470MHz ～862MHz UHF : 470MHz ～862MHz ( EK / EI model )
Receiving Frequency
!French cable TV channel of broadcast frequencies
116～172MHz & 220～469MHz
VIF Carrier : 38.9MHz(B/G, D/K, I, L) / 33.95MHz (L’) VIF Carrier : 38.9MHz
SIF Carrier : 33.4MHz(5.5MHz : B/G) SIF Carrier : 32.9MHz (6.0MHz )
32.9MHz(6.0MHz : I )
Intermediate Frequency
32.4MHz(6.5MHz : L, D/K)
40.45MHz (6.5MHz : L’)
PAL : 4.43MHz PAL : 4.43MHz
SECAM : 4.40625MHz / 4.25MHz
Colour Sub Carrier Freq.
NTSC : 3.58MHz / 4.43MHz NTSC : 3.58MHz / 4.43MHz
Power Input AC 220V～240V , 50Hz
Power Consumption (32") (28”) 183W(Max) , 127W(Avg)
Aerial Input Term 75Ωunbalanced, Coaxial
(32”) : Viewable area 76cm ( measured diagonally)
Picture Tube
(28”) : Viewable area 66cm ( measured diagonally) Viewable area 66cm ( measured diagonally)
High Voltage 31.0kV (at zero beam current)
Speaker 16cm×4cm, Oval type×2
Audio Output 7.5W + 7.5W
EXT-1/EXT-2/EXT-3 (IN/OUT) 21-pin Euro connector (SCART socket)×3
Video : Vp-p 75Ω(RCA pin jack)
Audio(L/R) : 500mVrms(-4dBs), High Impedance (RCA pin jack)
S / Video Y : 1Vp-p POSITIVE (Negative sync Provided, when terminated with 75Ω)
EXT-4 (Input)
C : 0.3Vp-p (Burst signal, when terminated with 75Ω)
AUDIO OUT (Variable) 0～1Vrms, Low Impedance (RCA pin jack×2)
Headphone jack Stereo mini jack (φ3.5mm )
Remote Control Unit RM-C54 (AAA/R03 dry cell battery×2) RM-C55 (AAA/R03 dry cell battery×2)
Design & specifications are subject to change without notice.
+1.0kV
-1.5kV
183W(Max)
127W(Avg)
189W(Max)
140W(Avg)

No.51780
A
V32X10EUS
A
V28X10EUS
A
V28X10EKS
A
V28X10EIS
3
■
■■
■21-pin Euro connector (SCART socket) : EXT-1 / EXT-2 / EXT-3
(P-P= Peak to Peak, B-W= Blanking to white peak)
Pin
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
8 FUNCTON SW
(SLOW SW)
Low : 0-3V, High : 8-12V, High
impedance ○○○
9 GND (G) ○○○
10 SCL3 NC ○NC
11 G input 700mVB-W, 75Ω○○
NC
12 SDA3 NC ○NC
13 GND (R) ○○○
14 GND (YS)○○ NC
15 R / C input R : 700mVB-W, 75Ω
C : 300mVP-P, 75Ω
○
(only R)
○○
(only C)
16 Ys input Low : 0 - 0.4, High : 1 - 3V, 75Ω○ ○ 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 assignment]

No.51780
A
V32X10EUS
A
V28X10EUS
4
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)
AV32X10EUS / AV28X10EUS

No.51780
A
V28X10EKS
A
V28X10EIS
5
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.
AV28X10EKS / AV28X10EIS

No. 51780
A
V32X10EUS
A
V28X10EUS
A
V28X10EKS
A
V28X10EIS
6
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.
"Pure FLAT CRT reproduce fine textured.
"Digi Pure pro : Auto digi pure with motion picture compensation.
"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.
"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 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.
FUNCTIONS
(FRONT)
①EXT-4 (INPUT) terminals
②Headphone jack (mini jack)
③(Volume) button
④Function (P∨/∧buttons / -/+ buttons )
⑤Remote control sensor
⑥ECO sensor
⑦Hyper Sound lamp
⑧ECO lamp
⑨Sleep timer lamp
⑩Power lamp
⑪Main power button
TV EXT-1 EXT-3
EXT-2
EXT-4
1 42 5 6 7 8 9 10 113

No. 51780
A
V32X10EUS
A
V28X10EUS
A
V28X10EKS
A
V28X10EIS
7
(REAR PANEL) (REMOTE CONTROL UNIT)
①
EXT-1(IN/OUT) Terminal
②
EXT-2(IN/OUT) Terminal
③
EXT-3(IN/OUT) Terminal
④
Aerial Socket
⑤
Audio out put terminal
①
Muting Key
②
Number Key
③
ZOOM Key
④
Hyper Sound Key
⑤
Information Key
⑥
TV Key
⑦
Volume -/+ Key
⑧
Standby (power) Key
⑨
Colour Key
⑩
TEXT Key
⑪
K/MENU Key
⑫
PR Channel ∨/∧Key
⑬
FUNCTION ( / / P∧/ P∨) Key
MAIN DIFFERENCE LIST
!
!!
!Model name
Part name
AV32X10EUS AV28X10EUS AV28X10EIS AV28X10EKS
MAIN PWB SMF-1006A-U2 SMF-1007A-U2 SMF-1903A-U2
POWER & DEF. PWB SMF-2002A-U2 SNF-2003A-U2
FRONT CONTROL PWB SMF-8006A-U2 SMF-8004A-U2
CRT SOCKET PWB SMF-3003A-U2 SMF-3004A-U2
!PICTURE TUBE (V01) W76ERF041X044 W66QDE891XA25
!DEG COIL (L01) QQW0066-001 QQW0101-001
!ROTATION COIL (L03) CELD904-001
!FBT (SERVICE) QQH0091-002-I2 QQH0091-003-I2
!POWER CORD QMPK160-185-JC QMPN130-185-JC
!FRONT CABINET ASS’Y LC10376-012A-U LC10662-009B-U
!REAR COVER LC10378-004A-U LC10664-003A-U
!RATING LABEL LC20380-010A-U
LC20079-010A-U LC20380-009A-U LC20379-009A-U LC20080-013A-U LC20091-021A-U
PACKING CASE AM1002-070-E AEM1002-A68-E
CUSHION ASS’Y LC10384-002C-U LC10722-002A-U
EURO LABEL AEM1039-090-E AEM1039-091-E
REMOTE CONTROL UNIT RM-C54-1C RM-C55-1C
!INST BOOK LCT0887-001A-U
LCT0888-001A-U
LCT0889-001A-U LCT0893-001A-U
S. DIAGRAM 2832X10EUS-HSAE
X-RAY CARD AEM1059-001A-E AEM1057-001A-E
REG. SHEET AEM3148-001-E
+ -
4
32
5
1
4
2
3
8
13
9
6
510
11
12
7
1

No.51780
A
V32X10EUS
A
V28X10EUS
A
V28X10EKS
A
V28X10EIS
8
SPECIFIC SERVICE INSTRUCTIONS
DISASSEMBLY PROCEDURE
REMOVING THE REAR COVER
1. Unplug the power cord.
2. [32inch]
Remove the 13 screws marked !
!!
!as shown in the Fig. 1.
[28inch]
Remove the 12 screws marked !
!!
!as shown in the Fig. 1.
3. Withdraw the rear cover toward you.
REMOVING THE AV TERMINAL BOARD
"After removing the rear cover.
1. Remove the 3 screws marked "
""
"as shown in the Fig. 1.
2. Remove the 2 claws marked #
##
#under the CHASSIS as shown
in Fig. 2.
3. Remove the AV TERMINAL BOARD slightly in the direction of
arrow $
$$
$as shown in Fig. 2.
REMOVING THE CHASSIS
"After removing 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.)
REMOVING THE SPEAKER
"After removing the rear cover.
1. Remove the 2 screws marked %
%%
%as shown in Fig. 1.
NOTE : When removing the screws marked %
%%
%of the speaker
remove the lower side screw first, and then remove the
upper one.
2. Remove the 2 screws &
&&
&attaching the speaker.
3. Follow the same steps when removing the other hand speaker.
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.
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.
Fig. 2
AV SW PWB
E
F
A
V TERMINAL
BOARD
E

No.51780
A
V32X10EUS
A
V28X10EUS
A
V28X10EKS
A
V28X10EIS
9
FRONT CABINET
CRT
SOCKET
PWB
POWER & DEF
PWB
CLAW
CLAW
MAIN PWB
CONTROL
BASE
CHASSIS
REAR COVER
Fig. 1
A
V SW PWB
D
B
A
D
C
SPEAKER
AV TERMINAL
BOARD
(×3)
100Hz
PWB
(×13)
POWER CORD
FRONT
CONTROL
PWB (R)
C
MICON
PWB
CONTROL
BASE
*This exploded view describes about the AV32X10EUS (32inch).
Although the 28inch is slightly different from this figure, you can use the exploded view for disassembling the 28inch
in the same step as for this one.
FRONT
CONTROL
PWB (L)
SPEAKER

No. 51780
A
V32X10EUS
A
V28X10EUS
A
V28X10EKS
A
V28X10EIS
10
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).
2. While keeping the surface of CRT down, mount the TV set on the
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. (Fig.3)
$About CRT Spacer (Fig.4)
An appropriate CRT spacer should be used in the corresponding
CRT in accordance with the type of the CRT.
When a CRT is replaced, special attention should be paid to this
matter.
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 CHANGE TABLE
CLOTH
A
PPROX.
35cm
Fig. 3
Fig. 6 Fig. 7
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
Fig. 5
CRT
CABINET CRT
CHANGE TABLE
Fig. 4

No. 51780
A
V32X10EUS
A
V28X10EUS
A
V28X10EKS
A
V28X10EIS
11
REPLACEMENT OF MEMORY ICs
1. Memory ICs
This TV use memory ICs. In the memory ICs, there are memorized data
for correctly operating the video and deflection circuits. When replacing
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 the power off and unplug the power cord from the wall outlet.
(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 without signal.
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, 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 -/+ key.
5) Press the MENU(OK) key to memorize the setting value.
6) Press the INFORMATION key, and return to the normal screen.
(5) Setting of receive channels
Set the receive channel.
For setting, refer to the OPERATING INSTRUCTIONS.
(6) Setting of SERVICE MENU
Verify the setting items of the SERVICE MENU of Table 2, and reset
where necessary.
For setting, refer to the SERVICE ADJUSTMENTS.
(7) User settings
Check the user setting values of Table 3, and if setting value is
different, set the correct value.
For setting, refer to the OPERATING INSTRUCTIONS.
Names of key
i
ii
i
▼
▼
▼
▼
INFORMATION
MUTING
FUNCTION UP/DOWN
MENU
FUNCTION -/+
key
OK
TV TV
+
NAME OF REMOTE CONTROL KEY
SERVICE MENU
1. IF 2. V/C
3. AUDIO 4. DEF
5. VSM PRESET 6. STATUS
7. PIP 8. - - -
9. SHIPPING (OFF) 0. BUS FREE
1-9 : SELECT : EXITi
Fig.1
SYSTEM CONSTANT SET
+ : STORE : EXIT
1. DESTINATION
**
OK
i
Fig.2
2. CRT TYPE 16 : 9
3. PURITY NO
4. PICTURE TILT YES
5. DIGIPURE PRO YES
6. PIP NO
7. PIC & TEXT YES
8. DOLBY NO
9. BBE YES
10. PROGRESSIVE YES
11. TDA9178 YES
12. TONE IC NO
13. FLAT YES

No. 51780
A
V32X10EUS
A
V28X10EUS
A
V28X10EKS
A
V28X10EIS
12
SETTING VALUES OF SYSTEM CONSTANT SET (TABLE 1)
Setting value
AV
3
2X1
0
E
US
Setting item Setting content AV28X10EUS AV28X10EIS AV28X10EKS
1. DESTINATION EU EI EK
2. CRT TYPE 16 : 9
3. PURITY NO
4. PICTURE TILT YES
5. DIGIPURE PRO YES
6. PIP NO
7. PIC & TEXT YES
8. DOLBY NO
9. BBE YES
10. PROGRESSIVE YES
11. TDA9178 YES
12. TONE IC NO
13. FLAT YES
SERVICE MENU SETTING ITEMS (TABLE 2)
Setting item Setting value Setting item Setting value
1. IF 1. VCO 4. DEF. 1. V-SHIFT
2. V-SIZE
3. H-CENT
4. H-SIZE
5. TRAPEZ
6. EW-PIN
7. COR-PIN
8. COR-UP
9. COR-LO
10. ANGLE
11. BOW
12. V-S.CR
13. V.LIN
2. V / C 1. RGB BLK
2. WDR R
3. WDR G
4. WDR B
5. BRIGHT
6. CONTRAST
7. COLOUR
8. HUE
9. SHARP
10. VCO ADJUSTMENT
11. VIDEO AGC
12. SYNC SLICE
5. VSM PRESET
COOL
NORMAL
WARM
1. CONT.
2. BRIGHT
3. SHARP
4. COLOUR
5. HUE
6. WDR R
7. WDR G
8. WDR B
3. AUDIO
(Do not adjust) 1. ERR LIMIT
2. A2 ID THR 6. STATUS
(Do not adjust) VPS
PDC
EK EU EI
16 : 9 4 : 3
YES NO
YES NO
YES NO
YES NO
YES NO
YES NO
YES NO
YES NO
YES NO
YES NO
1 TUNER 2 TUNER NO

No. 51780
A
V32X10EUS
A
V28X10EUS
A
V28X10EKS
A
V28X10EIS
13
USER SETTING VALUES (TABLE 3)
Setting item Setting value Setting item Setting value
SUB POWER ON VOLUME Appropriate sound volume
SHIPPING CHANNEL PR1 DISPLAY INDICATED
PRESET CHANNEL See ; OPERATING
INSTRUCTIONS. ZOOM MODE PANORAMIC
PICTURE SETTING EXT SETTING
TINT
CONTRAST
BRIGHT
SHARP
COLOUR
ECO MODE
COOL
REFER to VSM SETTING
REFER to VSM SETTING
REFER to VSM SETTING
REFER to VSM SETTING
OFF
ID
DUBBING BLANK
EXT-1→EXT-2
PICTURE FEATURES FEATURES
DIGITAL VNR
DIGIPURE PRO
COLOUR SYSTEM
4:3 AUTO ASPECT
AUTO
AUTO
TV : According to preset CH
EXT : AUTO
PANORAMIC
SLEEP TIMER
BLUE BLACK
CHILD LOCK
DECODER (EXT-2)
OFF
ON
ID : No.0000, ALL CH : OFF
ALL CH : OFF
SOUND SETTING INSTALL
BASS
TREBLE
BALANCE
TV SPEAKER
HYPER SOUND
BBE
CENTER
CENTER
CENTER
L / R
OFF
ON
LANGUAGE
EDIT ENGLISH PR CHANNEL ONLY
OTHERS : BLANK

No. 51780
A
V32X10EUS
A
V28X10EUS
A
V28X10EKS
A
V28X10EIS
14
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 setting (adjustment) using the REMOTE CONTROL
UNIT is made on the basis of the initial setting values. The
setting values which adjust the screen to the optimum
condition can be different from the initial setting values.
3. Make sure that connection is correctly made to AC power
source.
4. Turn on the power of the TV and measuring instrument for
warming up for at least 30 minutes before starting adjustment.
5. If the receive or input signal is not specified, use the most
appropriate signal for adjustment.
6. Never touch parts (such as variable resistors, transformers and
condensers) not shown in the adjustment items of this service
adjustment.
7. Preparation for adjustment (presetting):
Unless otherwise specified in the adjustment items, preset the
following functions with the REMOTE CONTROL UNIT:
"Setting position
PICTURE MODE (VSM) NORMAL
SLEEP TIMER OFF
BALANCE CENTER
ECO OFF
ZOOM PANORAMIC
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
●Checking items.
●Adjustment of FOCUS.
●VSM preset setting.
●VIDEO / CHROMA circuit adjustment.
●DEFLECTION circuit adjustment.
●AUDIO circuit adjustment. (Do not adjust)

No. 51780
A
V32X10EUS
A
V28X10EUS
A
V28X10EKS
A
V28X10EIS
15
ADJUSTMENT LOCATIONS
E1
TP-47R
CN014
CN013
CRT SOCKET PWB
(
SOLDER SIDE
)
TOP
MAIN PWB POWER&DEF PWB
CN001
AV SW PWB
TUNER
CN002 WDEG
1pin:B1
(
TP-91
)
2pin:NC
3pin:X-RAY
4pin:X-RAY
5pin:GND
5
1
X
FRONT CONTROL PWB
(
R
)
FRONT
HV
SCREEN VR
FOCUS 1 VR
TP-47G
TP-47B
CN014
L
CN003
FRONT CONTROL PWB
(
L
)
FOCUS 2 VR
HVT
CN004
CN005
CN006
C2
TP-E
MICON PWB
100Hz PWB
CN007
CN013
AUDIO
OUT(L/R) EXT 1 2 3
IN-OUT IN
ANT-IN
VM
CRT VM
FRONT
FRONT
VIDEO
HEAD
PHONE
J
F
(
L
)
(
R
)
CH
DOWN MENU
CH
UP EXT- 4 S-IN
W
CN002
PW
FUSE
POWER
SW J
POWER
TIMER ECO HYPER
SOUND CDS

No. 51780
A
V32X10EUS
A
V28X10EUS
A
V28X10EKS
A
V28X10EIS
16
BASIC OPERATION SERVICE MENU
1. TOOL OF SERVICE MENU OPERATION
Operate the SERVICE MENU with the REMOTE CONTROL UNIT.
2. SERVICE MENU ITEMS
With the SERVICE MENU, various settings (adjustments) can be made, and they are broadly classified in the following items of settings
(adjustments):
(1) 1. IF ･･･････････････････････ This mode adjusts the setting values of the IF circuit.
(2) 2.V/C ･･････････････････････ This mode adjusts the setting values of the VIDEO / CHROMA circuit.
(3) 3.AUDIO･･･････････････････ This mode adjusts the setting values of the multiplicity SOUND circuit.
(4) 4.DEF ･････････････････････ This mode adjusts the setting values of the DEFLECTION circuit for each aspect mode given below.
ASPECT V. FREQ.
FULL 100Hzi / 60HzP / 120Hzi
PANORAMIC ↑
SUBTITLE ↑
(5) 5.VSM PRESET･････････････ This mode adjusts the initial setting values of COOL,NOMAL and WARM.
(VSM : Video Status Memory)
3. BASIC OPERATION OF SERVICE MENU
(1) How to enter SERVICE MENU
Press the INFORMATION key and the MUTING key of the
REMOTE CONTROL UNIT simultaneously, and the
SERVICE MENU screen of Fig. 1 will be displayed.
(2) Selection of SUB MENU SCREEN
Press one of keys 1～5 of the REMOTE CONTROL UNIT
and select the SUB MENU SCREEN (See Fig. 3), form the
SERVICE MENU.
SERVICE MENU →SUB MENU
1. IF
2. V / C
3. AUDIO
4. DEF.
5. VSM PRESET
6. STATUS
7. PIP
8. - - -
9. SHIPPING (OFF)
0. BUSS FREE
SERVICE MENU
SERVICE MENU
1. IF 2. V/C
3. AUDIO 4. DEF
5. VSM PRESET 6. STATUS
7. PIP 8. - - -
9. SHIPPING (OFF) 0. BUS FREE
1-9 : SELECT : EXITi
Fig.1
NAME OF REMOTE CONTROL KEY
Names of key
i
ii
i
▼
▼
▼
▼
INFORMATION
MUTING
FUNCTION UP/DOWN
MENU
FUNCTION -/+
key
OK
TV TV
+
Fig.2
DO NOT
WORK

No. 51780
A
V32X10EUS
A
V28X10EUS
A
V28X10EKS
A
V28X10EIS
17
COOL
NORMAL
WARM
1. RGB BLK
2. WDR R
3. WDR G
4. WDR B
5. BRIGHT
6. CONTRAST
7. COLOUR
8. HUE
9. SHARP
10.VCO ADJUSTMENT
11. VIDEO AGC
12. SYNC SLICE
1.ERR LIMIT
2. A2 ID THR
Fig. 3 SUB MENU SCREEN
SERVICE MENU
SERVICE MENU
1. IF 2. V/C
3. AUDIO 4. DEF
5. VSM PRESET 6. STATUS
7. PIP 8. - - -
9. SHIPPING(OFF) 0. BUS FREE
1-9 : SELECT i : EXIT
SUB MENU 3. AUDIO (Do not adjust)
DEF FULL
**
****
**
Hz
1. V-SHIFT
SUB MENU 4. DEF
***
(
**
)
- / +
: STORE i : EXIT
OK
1. V-SHIFT
2. V-SIZE
3. H-CENT
4. H-SIZE
5. H-TRAPEZ
6. EW-PIN
7. COR-PIN
8. COR-UP
9. COR-LO
10. ANGLE
11. BOW
12. V-S.CR
13. V.LIN
1. CONT.
2. BRIGHT
3. SHARP
4. COLOUR
5. HUE
6. WDR R
7. WDR G
8. WDR B
SUB MENU 1.IF (CW)
V/C
1. RGB. BLK
****
SUB MENU 2. V/C
PAL
- / +
: STORE i : EXIT
OK
AUDIO
1. ERR LIMIT 10H
C AD BITS =
********
- / +
: STORE i : EXIT
OK
IF SERVICE MENU
1. VCO
2. ATT ON / OFF
1-2 : SELECT i : EXIT
SUB MENU 5. VSM PRESET
VSM PRESET NORMAL
1.CONT
***
- / +
: STORE i : EXIT
OK
VCO (CW)
**
****
**.
..
.**
****
**
MHz
MAIN
TOO HIGH
ABOVE REF
JUST REF
BELOW REF
TOO LOW
i : EXIT
Do not move.

No. 51780
A
V32X10EUS
A
V28X10EUS
A
V28X10EKS
A
V28X10EIS
18
(3) Method of Setting
"Method of Setting 1.IF
[VCO] ･･･････････････････････････ *It must not adjust without signal
①1 Key･････････････････････････ Select 1.IF.
②1 Key ････････････････････････ Select 1. VCO (CW)
Check the arrow position between the ABOVE REF. and BELOW REF.
③INFORMATION ( ) Key ･･････ Return to the SERVICE MENU screen.
"Method of setting 2.V/C, 3.AUDIO, 4.DEF and 5.VSM PRESET.
①2～5 Key･･････････････････････ Select one from 2. V/C, 3. AUDIO, 4. DEF and 5. VSM PRESET.
②FUNCTION UP/DOWN Key ･････ Select setting items.
③FUNCTION -/+･････････････････ Set (adjust) the setting values of the setting items.
④MENU (OK) 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.)
⑤INFORMATION ( ) Key ･･････ Return to the SERVICE MENU screen.
"Can not setting 6. STATUS, 7. PIP, 8. --- , 9. SHIPPING(ON) & 0. BUS FREE.
(4) Release of SERVICE MENU
1) After completing the setting, return to the SERVICE MENU, then again press the INFORMATION (OK) key.
i
i

No. 51780
A
V32X10EUS
A
V28X10EUS
A
V28X10EKS
A
V28X10EIS
19
ADJUSTMENT
CHECKING ITEM
Item Measuring
instrument Test point Adjustment part Description
Check of B1
Power Supply Signal Generator
DC voltmeter
Remote
Control unit
TP-91(B1)
TP-E(#
##
#)
[X connector
on POWER
DEF PWB]
1. RGB BLK 1. Receive any broadcast.
2. Press the ZOOM key and select the FULL mode.
3. Select 2. V/C from the SERVICE MENU.
4. Select 1. RGB BLK with function UP / DOWN key.
5. Press the function +( ) key to find the cut off screen (Black
screen).
6. Connect a DC voltmeter to TP-91(B1) and TP-E(#).
7. Make sure that the voltage is DC139.9 ±2.0V.
8. Press the function – ( ) key to return to service menu.
Check of High
Voltage Signal Generator
DC volunteer
Remote
Control unit
CRT anode
Chassis GND
1. RGB BLK 1. Receive any broadcast.
2. Press the ZOOM key and select the FULL mode.
3. Select 2. V/C from the SERVICE MENU.
4. Select 1. RGB BLK with function UP / DOWN key.
5. Press the function +( ) key to find the cut off screen (Black
screen).
6. Connect a DC voltmeter to CRT ANODE and chassis GND.
7. Make sure that the voltage is DC 31.0kV .
8. Press the function – ( ) key to return to service menu.
Check of VCO Remote
control unit 1. VCO "Under normal conditions, no adjustment is required.
"Confirmation adjustment.
1. Select 1.IF from the SERVICE MENU.
2. Then select 1.VCO from the IF SERVICE MENU.
3. Receive any broadcast.
4. Check the arrow ( ) position between the ABOVE REF. and
BELOW REF.
+1kV
-1.5kV
TOO HIGH
ABOVE REF
JUST REF
BELOW REF
TOO LOW i : EXIT
VCO
(
CW
)
****
MHz
MAIN
1. VCO
2. ATT ON/OFF
i: EXIT
IF SERVICE MENU
1-2 : SELECT
(Do not move)

No. 51780
A
V32X10EUS
A
V28X10EUS
A
V28X10EKS
A
V28X10EIS
20
ADJUSTMENT OF FOCUS & SCREEN
Item Measuring
instrument Test point Adjustment part Description
Adjustment of
FOCUS Signal generator FOCUS 1 VR
FOCUS 2 VR
[In HVT]
1. Receive a cross-hatch signal.
2. By turning the FOCUS 2 VR, adjust the to make the vertical
lines as fine and sharp as possible.
3. By turning the FOCUS 2 VR, adjust the picture so that the 5th
vertical line from left side of the cross-hatch picture becomes
thinnest.
4. By turning the FOCUS 1 VR, adjust the 3rd horizontal line from
the upper side may become uniform at the line center and its
periphery.
5. Carry out adjustment by repeating the steps 2,3 and 4 about.
6. Make sure that when the screen is darkened, the lines remain
in good focus.
Adjustment of
SCREEN VR Signal generator SCREEN VR (In HVT) 1. Receive a whole black signal .
2. Press the ZOOM key and select the FULL mode.
3. Select 2. V/C from the SERVICE MENU.
4. Rotate the SCREEN VR clockwise from the full
counterclockwise position and stop it at the point where
“CLOW” status (marked in Fig.) changes from 1 to 0
(which is indicated at the 3rdcolumn from the right.)
*“CLOW” : control loopout of window.
VSM PRESET SETTING
Item Measuring
instrument Test point Adjustment part Description
Setting of
VSM PRESET Remote control unit 1.CONT. 2. BRIGHT
3. SHARP
4. COLOUR
5. HUE
6. WDR R
7. WDR G
8. WDR B
1. Select 5.VSM PRESET from the SERVICE MENU.
2. Select COOL with the MENU key of the remote control unit.
3. Adjust the FUNCTION UP/DOWN and -/+ key to bring the set
values of 1.CONT ～8. WDR B to the values shown in the
table.
4. Press the MENU key and memorize the set value.
5. Respectively select the VSM PRESET mode for NORMAL and
WARM, and make similar adjustment as in 3 above.
6. Press the MENU key and memorize the set value.
$Refer to OPERATING INSTRUCTIONS for the PICTURE
MODE.
Setting item
VSM preset mode 1. CONT. 2. BRIGHT 3. SHARP 4. COLOUR 5. HUE 6. WDR R 7. WDR G 8. WDR B
COOL [phone]
NORMAL 00-1200000
WARM -13 0 -12 -1 0 +5 0 0
SETTING VALUES OF VSM PRESET
V/C
1. RGB BLK
00
SERVICE MODE SCREEN
CLOW
status
- / + : STORE i : EXIT
OK
0 0 0 0 0 1 0 0
PAL
SCREEN VR
FOCUS 1 VR
FOCUS 2 VR
HVT
FOCUS 1 VR
FOCUS 2 VR