JVC AV-28WFT1EPG User manual

AV-28WFT1EPG AV-28WFT1EIS
AV-28WFT1EPS AV-32WFT1EPG
AV-28WFT1EKS AV-32WFT1EPS
AV-28WFT1EK AV-32WFT1EKS
JVC
_ SERVICE MANUAL
N Wn
BASIC CHASSIS
AV-28WFT1EPG AV-32WFT1EPG
AV-28WFT1EPS AV-32WFT1EPS
AV-28WFT1EIS AV-32WFT1EKS
AV-28WFT1EKS
AV-28WFT1EK
CONTENTS
M SPECIFICATIONS «+ sect etter eee eee eee eee eee eee 2
M SAFETY PRECAUTIONS «cect c tcc t treet rete eee e ene pee e nee ene nena 5
M FEATURES: ccc c etter ence eee eee eee eee eee eee eee eee eee e tenes 7
M MAIN DIFFERENCE PARTS LIST- «+s tcc tc cette teen e nen cree enna 8
PU) \ e400) ee - 10
@ SPECIFIC SERVICE INSTRUCTIONS «eer etr etter terete terrence ee teen eenneee 11
@ SERVICE ADJUSTMENTS «sccrt tte t terete eee ee tenner eee e eens 16
% STANDARD CIRCUIT DIAGRAM «sere c tert t terete tenet eee eee eee e eee eens 2-1
M PARTS LIST cc ccc tcc rece eee e eens eee e eee e anne ee eee ea nesses enees - 37
COPYRIGHT © 2000 VICTOR COMPANY OF JAPAN, LTD.
F322
No.51694
Feb. 2000

AV-28WFT1EPG AV-28WFTI1EIS
AV-28WFT1EPS
AV-28WFT1EKS
AV-28WFT1EK
SPECIFICATIONS
Content
AV-28WFT1EPG/AV-28WFTIEPS | AV-28WFT1EK/AV-28WFT1EKS AV-28WFT1EIS
Dimensions (WxHxD) | 780mm x 509mm x 499mm <_—— <+_—
Mass 39.0kg <+—_—_- <—_——-
) )
TV RF System CCIR (B/G, | JL CCIR (1) CCIR (I
PAL / SECAM / PAL / NTSC (Only in EXT mode) PAL / NTSC (Only in EXT mode)
NTSC (Only in EXT mode)
Stereo System A2/NICAM NICAM NICAM
Fastext (United Kingdom system) Fastext (United Kingdom system)
TOP (German system) WST(Standard system)
WST(Standard system)
Colour System
Teletext System
Receiving Frequency
VHF
UHF
French CA TV
47MHz ~ 470MHz
470MHz ~ 862MHz
47MHz ~ 470MHz
470MHz ~ 862MHz
116MHz ~ 172MHz/
220MHz ~ 469MHz
470MHz ~ 862MHz
Intermediate Frequency
VIF Carrier
SIF Carrier
38.9MHz (1)
32.9MHz (6.0MHz:1)
38.9MHz (1)
32.9MHz (6.0MHz:1)
38.9MHz (B/G, | ,L)/ 33.95MHz (L’)
33.4MHz (5.5MHz:B/G) / 32.9MHz
(6.0MHz:l) / 32.4MHz (6.5MHz:L) /
27.45MHz (6.5MHz:L’)
Colour Sub Carrier Freq.
PAL
SECAM
NTSC
4.43MHz 4.43MHz 4.43MHz
4.40625MHz / 4.25MHz
3.58MHz / 4.43MHz
AC 220V~240V , 50Hz
168W (Max) / 115W (Avg),
31.0Kv ~
current) ~
115W/h(ITALY)
+
) |
Speaker
_
16
x
4cm
Oval
Type
x
2
;
Audio Output 7.5W +7.5W
La
=;
|
fewot 2 ea tel
3.58MHz / 4.43MHz 3.58MHz / 4.43MHz
Power Input
Power Consumption
Aerial Input Term
Visible size : 66cm, Measured
diagonally
Picture Tube
High Voltage (at zero beam
EXT-1/EXT-2/EXT-3 21-pin Euro connector
(Input / Output) (SCART socket)
AUDIO OUT (Variable) 0~1Vrms, Low Impedance
(RCA pin jack x 2)
75Q unbalanced, Coaxial
EXT-4 (Input) Video| 1Vp-p 75 (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 75Q)
C : 0.286Vp-p (Burst signal, when
terminated with 75 Q)
~—_——
<«_
<+\__
<+——_.
<+——_
<+—_
Headphone jack Stereo mini jack (@3.5mm )
Remote Control Unit RM-C50 (AAA/RO3 dry battery x 2) | RM-C51 (AAA/RO3 dry battery x 2)
Design & specifications are subject to change without notice.
2 No.51694

AV-32WFT1EPG
AV-32WFT1EPS
AV-32WFT1EKS
SPECIFICATIONS
AV-32WFT1EPG/AV-32WFT1EPS
AV-32WFT1EKS
Dimensions
(WxHxD)
|
855mmx
550mm
x
568mm
—_——
Mass
56.5kg
—_
TV
RF
System
CCIR
(B/G,
|
,L)
CCIR
(1)
PAL / SECAM /
Colour S PAL /
SOUS yeeon NTSC (Only in EXT mode)
Stereo
System
A2/
NICAM
NICAM
Teletext
System
Fastext
(United
Kingdom
system)
Fastext
(United
Kingdom
system)
TOP
(German
system)
WST(Standard
system)
WST(Standard system)
Receiving Frequency
VHF
47MHz ~ 470MHz
UHF | 470MHz ~ 862MHz
French CA TV} 116MHz ~ 172MHz/220MHz ~ 469MHz
Intermediate Frequency
VIF Carrier
SIF Carrier
470MHz ~ 862MHz
38.9MHz (B/G, | ,L) / 33.95MHz (L’)
33.4MHz (5.5MHz:B/G) / 32.9MHz (6.0MHz:l) /
32.4MHz (6.5MHz:L) / 27.45MHz (6.5MHz:L’)
Colour Sub Carrier Freq.
PAL
SECAM
NTSC
38.9MHz (1)
32.9MHz (6.0MHz:1)
4.43MHz 4.43MHz
4.40625MHz / 4.25MHz
3.58MHz / 4.43MHz
AC 220V-~240V , 50Hz
472W (Max) / 121W (Avg)
3.58MHz / 4.43MHz
Power Input
Power Consumption
121W/h(ITALY)
Aerial Input Term 75 Q unbalanced, Coaxial
Visible size : 76cm, Measured diagonally
+1kV <—___
31.0KV _4 5,y (at Zero beam current)
Speaker @ 10cm round x 2 ‘
Audio Output 7.5W + 7.5W
EXT-1/EXT-2/EXT-3
21-pin
Euro
connector
<
(Input / Output) (SCART socket)
EXT-4 (Input) Video| 1Vp-p 75Q(RCA pin jack)
Audio(L/R)| 500mVrms( -4dBs ), High Impedance ( RCA pin jack )
Y : 1Vp-p POSITIVE (Negative sync Provided, when
S/ Video! terminated with 75Q)
C : 0.286Vp-p (Burst signal, when terminated with 75
Q)
Picture Tube
High Voltage
AUDIO OUT 0~1Vrms, Low Impedance
(RCA pin jack)
<<
Headphone jack Stereo mini jack (¢3.5mm )
Remote
Control
Unit
RM-C50
(AAA/RO3
dry
battery
x
2)
RM-C51
(AAA/RO3
dry
battery
x
2)
No.51694 . 3

AV-28WFT1EPG AV-28WFTI1EIS
AV-28WFTIEPS AV-32WFT1EPG
AV-28WFTIEKS AV-32WFTIEPS
AV-28WFT1EK AV-32WFT1EKS
@ 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)
6
AUDIO R output 500mVrms(Nominal),
a
High impedance
AUDIO L output poomyons! (Nominal), oO oO
AUDIO GND ee Oe
oS
oi
GN
High baie:
FUNCTON SW Low : 0-3V, High : 8-12V, High
eS ee
Pe
pa Oe]
Poe Oe |
a
0
> &
ee
a
fewer
R/C input R: 700MVaw, 752 Oo O Oo
C:300MVp.p, 75Q (only R) (only C) (only C)
Low: 0- 0.4, High : 1 - 3V, 75Q
VIDEO output 1Vp.p(Negative going sync), 75 @
(TV) (LINE OUT)
= ©
No
mre herd [RE Se ee | es ee pe
o-) o a} BR] wo] nh ro) “
0 | VIDEO/Y input 1Vp.p(Negative going sync), 75Q Pre? OOc hy. Oe — 4
[Pin assignment]
20 18 16 14 12 10 8 6 4
MOOOOOUOOL
ee
21°19 17 15 13 11 9 7
4 No.51694

SAFETY PRECAUTIONS)
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.
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.
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
WARNING
The
equipment
has
been
designed
and
manufactured
to
meet
international
safety
standards.
itis
the
legal
responsibility
of
the
repairer
to
ensure
that
these
safety
standards
are
maintained.
aoPRONS=
Repairs must be made in accordance with the relevant safety standards.
AV-28WFT1EIS
AV-28WFT1EKS
AV-28WFT1EK _AV-32WFT1EKS
A WF “4EKS | AV-2
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
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.
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.
Itis essential that safety critical components are replaced by approved parts.
\f mains voltage selector is provided, check setting for local voltage.
No.51694