JVC AV-14AMG3/U Schematics
SCHEMATIC DIAGRAMS
COLOR TELEVISION
BASIC CHASSIS
AV-14AMG3/U
CD-ROM No.SML200209
AV-14AMG3
CG
CONTENTS
NOTE ON USING CIRCUIT DIAGRAMS
SEMICONDUCTOR SHAPES
BLOCK DIAGRAM
CIRCUIT DIAGRAMS
PATTERN DIAGRAMS
COPYRIGHT 2002 VICTOR COMPANY OF JAPAN, LTD.
2-1
2-2
2-3
2-5
2-9
No.52069
Aug. 2002
AV-14AMG3
STANDARD CIRCUIT DIAGRAM
AV-14AMG3
/U
NOTE ON USING CIRCUIT DIAGRAMS
1.SAFETY
The components identified by the symbol and shading are
critical for safety. For continued safety replace safety critical
components only with manufactures recommende d parts.
2.SPECIFIED VOLTAGE AND WAVEFORM VALUES
The voltage and waveform values have been measured under the
following con ditions.
(1)Input signal : Colour bar signal
(2)Setting positions of
each knob/button and
variable resistor
(3)Internal resistance of test er
:DC 20k
/V
(4)Oscilloscope sweeping time
:H
20µS/div
:V
5mS/div
:Others
Sweeping time is
specified
(5)Voltage values
:All DC voltage values
Since the voltage values of signal circuit vary to some extent
according to adjustments, use them as reference values.
3.INDICATION OF PARTS SYMBOL [EXAMPLE]
In the PW board
:R1209
R209
4.IND ICATIONS ON THE CIRCUIT DIAGRAM
(1)Resistors
Resistance value
No unit :[
]
K
:[K
]
M
Rated allowable power
No indication :1/ 16 [W]
Others :As specified
Type
No indication
:Carbon resistor
OMR
:Oxide metal film resistor
MFR
:Metal film resistor
MPR
:Metal plate resistor
UNFR
:Uninf lammable resistor
FR
:Fusible resistor
Composition resi stor 1/2 [W] is specified as 1/2S o r Comp.
(2)Capacitors
: Original setting position
when shipped
5.NOT E FOR REPAIRING SERVI CE
This mode l's p ower circu it is pa rtly diffe rent in th e 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 ci rcuit 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, pl ease use t he numbers t hat appear
in the Parts List.
Type
MM
:M eta lized mylar cap ac i tor
PP
:Polypropylene capacitor
MPP
:Metalized polypropylene capacitor
MF
:Metalized film capacitor
TF
:Thin film capacitor
BP
:Bipolar electrolytic capaci tor
TAN
:Tantalum capacitor
(3)Coils
No unit
:[
µ
H]
Others
:As specified
(4)Power Supply
:B1
:9V
:5V
Respective voltage values are indicated
(5)Test point
:T est point
:Only test point display
(6)Connecting method
:Connector
:Wrapping or soldering
:Receptacle
(7)Ground symbol
:LIVE side ground
:ISOLATED(NEUTRAL) side gro und
:EARTH ground
:DIGITAL ground
:[M ]
Capacitance value
1 or higher :[pF]
less than 1
:[µF]
Withstand v oltage
No indication :DC50[V]
Others :DC withstand voltage [V]
AC indicated
:AC withstand voltage [V]
Electrolytic Capacitors
47/50[Example]:Capacitance value [µF]/withstand voltage[V]
No indication
:Ceramic capacitor
:B2 (12V)
A V-14AMG3
No.52069
Aug. 2002 No. 520692-12
A V-14AMG3
CONTENTS
A V-14AMG3
CRT SOCKET PWB PATTERN
SEMICONDUCTOR SHAPES
BLOCK DIA GRAM
CIRCUIT DIAGRAMS
MAI N PWB CIRCUI T DIAGRAM S
P ATTERN DIAGRAMS
MAIN PW B PAT TERN
CRT SOCKET PWB PATTERN
SEMICONDUCTOR SHAPES
TRANSISTOR
BOTTOM VIEW
E
C
B
ECB
BCE
(G)(D)(S )
FRONT VIEW
ECB
ECB
TO P VI EW
CHIP TR
C
BE
2-2
2-3
2-5
2-9
2-11
W611
R354
C354
R357
TP-47G/R
R363
L351
Q351
R366
R360
TP-47R/G
W336
SCREEN
R368
C352
C351
R356
R
353
R359
TOP
EB
C356
Q353
C
L353
SK351
R365
L354
MARK
R362
R369
41
U
IC
B O TT OM VI EW F R O NT V IEW TO P VI EW
OUT
E
IN
IN OUTE
1 N
1 N
CHIP IC
TO P VI EW
N
N
N
1
N
1
N
364
R
TP-47B
L3
52
R352
D353
R351
R345
B
R347
R349
W576
R348
Q352
E
R3
R361
55
C355
D354
R367
W338
5
R358
K351
MARK
1
T
Y304
D355
D351
CKF1700-AH1-1
TP-E
Y303
E1
\402/2\41
R346
1
N
C357
D356
D352
W337
2-2
No.52069No.52069
2-11
Loading...