JVC AV-30W475/S, AV-30W475/Y Schematics
SCHEMATIC DIAGRAMS
COLOR TELEVISION
AV-30W475 /S,
AV-30W475
CD-ROM No.SML200408
/Y
BASIC CHASSIS
GW
COPYRIGHT © 2004 Victor Company of Japan, Limited.
No.YA095
2004/7
AV-30W475
/S
, AV-30W475
/Y
STANDARD CIRCUIT DIAGRAM
NOTE ON USING CIRCUIT DIAGRAMS
1.SAFETY
The components identified by the symbol and shading are
critical for safety. For continued safety replace safety ciritical
components only with manufactures recommended parts.
2.SPECIFIED VOLTAGE AND WAVEFORM VALUES
The voltage and waveform values have been measured under the
following conditions.
(1)Input signal : Colour bar signal
(2)Setting positions of
each knob/button and
variable resistor
(3)Internal resistance of tester
(4)Oscilloscope sweeping time
(5)Voltage values
Since the voltage values of signal circuit vary to some extent
according to adjustments, use them as reference values.
: Original setting position
when shipped
: DC 20kΩ/V
: H
: V
: Othters
: All DC voltage values
20µs / div
5ms / div
Sweeping time is
specified
3.INDICATION OF PARTS SYMBOL [EXAMPLE]
In the PW board
: R1209
R209
Type
No indication
MM
PP
MPP
MF
TF
BP
TAN
(3)Coils
No unit
Others
(4)Power Supply
Respective voltage values are indicated
(5)Test point
: Test point
(6)Connecting method
: Ceramic capacitor
: Metalized mylar capacitor
: Polypropylene capacitor
: Metalized polypropylene capacitor
: Metalized film capacitor
: Thin film capacitor
: Bipolar electrolytic capacitor
: Tantalum capacitor
: [µH]
: As specified
: B1
: 9V
: Connector
: Receptacle
: Only test point display
: Wrapping or soldering
: B2 (12V
: 5V
)
4.INDICATIONS ON THE CIRCUIT DIAGRAM
(1)Resistors
Resistance value
No unit : [Ω]
K
M
Rated allowable power
No indication : 1/16 [W]
Others : As specified
Type
No indication
OMR
MFR
MPR
UNFR
FR
Composition resistor 1/2 [W] is specified as 1/2S or Comp.
(2)Capacitors
Capacitance value
1 or higher : [pF]
less than 1
Withstand voltage
No indication : DC50[V]
Others : DC withstand voltage [V]
AC indicated
Electrolytic Capacitors
47/50[Example]: Capacitance value [µF]/withstand voltage[V]
: [kΩ]
: [MΩ]
: Carbon resistor
: Oxide metal film resistor
: Metal film resistor
: Metal plate resistor
: Uninflammable resistor
: Fusible resistor
: [µF]
: AC withstand voltage [V]
(7)Ground symbol
: LIVE side ground
: ISOLATED(NEUTRAL) side ground
: EARTH ground
: DIGITAL ground
5.NOTE FOR REPAIRING SERVICE
This model's power circuit is partly different in the GND. The
difference of the GND is shown by the LIVE : ( ) side GND and the
ISOLATED(NEUTRAL) : ( ) side GND. Therefore, care must be
taken for the following points.
(1)Do not touch the LIVE side GND or the LIVE side GND and the
ISOLATED(NEUTRAL) side GND simultaneously. if the above
caution is not respected, an electric shock may be caused.
Therefore, make sure that the power cord is surely removed from
the receptacle when, for example, the chassis is pulled out.
(2)Do not short between the LIVE side GND and ISOLATED(NEUTRAL
side GND or never measure with a measuring apparatus measure
with a measuring apparatus ( oscilloscope, etc.) the LIVE side GND
and ISOLATED(NEUTRAL) side GND at the same time.
If the above precaution is not respected, a fuse or any parts will be broken.
Since the circuit diagram is a standard one, the circuit and
circuit constants may be subject to change for improvement
without any notice.
NOTE
Due improvement in performance, some part numbers show
in the circuit diagram may not agree with those indicated in
the part list.
When ordering parts, please use the numbers that appear
in the Parts List.
)
(No.YA095)2-1
CONTENTS
SEMICONDUCTOR SHAPES ......................................................................2-2
BLOCK DIAGRAM........................................................................................2-3
CIRCUIT DIAGRAMS....................................................................................2-5
MAIN PWB CIRCUIT DIAGRAM (1/2) ........................................................................................................ 2-5
MAIN PWB CIRCUIT DIAGRAM (2/2) ........................................................................................................ 2-7
AV SELECTOR PWB CIRCUIT DIAGRAM ................................................................................................. 2-9
CRT SOCKET PWB CIRCUIT DIAGRAM .................................................................................................. 2-11
SIDE CONTROL PWB CIRCUIT DIAGRAM ............................................................................................. 2-13
FRONT CONTROL PWB CIRCUIT DIAGRAM .......................................................................................... 2-15
PATTERN DIAGRAMS .............................................................................. 2-17
MAIN PWB PATTERN .............................................................................................................................. 2-17
AV SELECTOR PWB PATTERN ............................................................................................................... 2-19
CRT SOCKET PWB PATTERN ................................................................................................................. 2-20
SIDE CONTROL PWB PATTERN ............................................................................................................. 2-21
FRONT CONTROL PWB PATTERN ......................................................................................................... 2-22
CHANNEL CHART (US) ............................................................................. 2-23
CHANNEL CHART (CA)............................................................................. 2-24
SEMICONDUCTOR SHAPES
TRANSISTOR
BOTTOM VIEW FRONT VIEW TOP VIEW
CHIP TR
E
C
B
ECB
B
(G)E(S)C(D)
ECB
ECB
IC
BOTTOM VIEW FRONT VIEW TOP VIEW
OUT
E
IN
IN OUTE
1 N
1 N
1
CHIP IC
TOP VIEW
N
N
N
1
N
1
N
C
BE
N
2-2(No.YA095)
BLOCK DIAGRAM
INPUT 3
INPUT 1
INPUT 2
AUDIO
OUT
V3
L3
R3
SIDE CONTROL
PWB
VTV
V1
V2
V3
Y/C
V1
L1
R1
L2
R2
L
R
AUDIO OUT L/R
L1/R1
L2/R2
MPX
Y/C
IC5501
AV SW
Y/C
L3/R3
V
Y/C
IC5001
TV SW
MTS DECODE
IC5201
3L DIGITAL
COMB
FILTER
MTS DECODE/AUDIO CONTROL/AUDIO SELECT
SURROUND
AV SELECTOR PWB
TONE
CONTROL
VOLUME
CONTROL
L/R
Q5901~Q5908
ROTATION
DRIVE
IC5701
D-A CONVERT.
ROTATION COIL
CRT SOCKET PWB
Q3304
R/G/B
Q3306
RGB OUT
Q3103
Q3107
VM AMP
Q3109
VM
CRT
VM COIL
INPUT 2
COMPONENT
VIDEO
Y/V2 V2
Pb
Y, R-Y, B-Y
Pr
LF901
TU001
TUNER
IF
D901
IC101
IF / DET
VTV
V2
Y, R-Y, B-Y
IC911 IC921
POWER REG ERROR AMP
T921
SW
TRANSF.
Y IN
Y
FEEDBACK
C IN
PC921
VOLTAGE
B1
CHROMA
PROCESS
Y PROCESS
Pb, Pr
Y/C
SYNC.
SEP
VM
SVM_OUT
BASE BAND
PROCESS
R/G/B
CUTOFF
DRIVE
HORIZONTAL
PROCESS
H_OUT
H
RGB
SW
IC201
MAIN CPU/CLOSED CAPTION DECODE/
VIDEO PROCESS/RGB PROCESS/
SYNC. SEP/DEF PROCESS
OSD R/G/B/Ys/I
GENERATE
CLOSED
CAPTION
DECODER
VERTICAL
PROCESS
V_OUT
V
EW
PROCESS
EW
SDA0
MICOM
SDA1
SCL0
SCL1
V
H
MEMORY
L / R
IC421
VERT OUT
Q511
H OUT
IC641
SURROUND
B1
IC651
BBE
Q541~Q543
SIDE PIN OUT
T502
HVT
AUDIO OUT
FOCUS
SCREEN
IC621
SPEAKER L
SPEAKER R
DEF
YOKE
V
H
MAIN PWB
2-4(No.YA095)(No.YA095)2-3
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