SCHEMATIC DIAGRAMS
COLOUR TELEVISION
No.52027
Aug. 2002
COPYRIGHT 2002 VICTOR COMPANY OF JAPAN, LTD.
AV-21Q3/D / AV-21Q3/AU
AV-21Q3/HK / AV-21QMG3
AV-21QMG3/-A / AV-21QMG3/U
AV-2115EE
AV-21Q3
AV-21QMG3
AV-2115EE
NOTE ON USING CIRCUIT DIAGRAMS
SEMICONDUCTOR SHAPES
BLOCK DIAGRAM
CIRCUIT DIAGRAMS
PATTERN DIAGRAMS
2-1
2-2
2-3
2-5
2-13
CD-ROM No.SML200209
BASIC CHASSIS
CG
CONTENTS
POWER
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1
No.52027
AV-21Q3
AV-21QMG3
AV-2115EE
AV-21Q3
AV-21QMG3
AV-2115EE
Aug. 2002 No. 520272-16
STANDARD CIRCUIT DIAGRAM
AV-21Q3/D, AV-21Q3/AU, AV-21Q3/HK,
AV-21QMG3, AV-21QMG3
/-A, AV-21QMG3/U
AV-2115EE
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 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
: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.INDICATIONS 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
:Uninflammable resistor
FR
:Fusible resistor
Composition resistor 1/2 [W] is specified as 1/2S or Comp.
(2)Capacitors
: Original setting position
when shipped
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.
Type
MM
:Metalized mylar capacitor
PP
:Polypropylene capacitor
MPP
:Metalized polypropylene capacitor
MF
:Metalized film capacitor
TF
:Thin film capacitor
BP
:Bipolar electrolytic capacitor
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
:Test point
:Only test point display
(6)Connecting method
:Connector
:Wrapping or soldering
:Receptacle
(7)Ground symbol
:LIVE side ground
:ISOLATED(NEUTRAL) side ground
:EARTH ground
:DIGITAL ground
:[M ]
Capacitance value
1 or higher :[pF]
less than 1
:[µF]
Withstand voltage
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)
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No.52027No.52027
2
AV-21Q3
AV-21QMG3
AV-2115EE
AV-21Q3
AV-21QMG3
AV-2115EE
B
G1
RK
H
1
4
E
U
MARK
C
GK
G1
HE
H
BK
G2 GK
RK
HE
BK
G1
G2
E1
SCREEN
Q351
Q352
Q353
R364
R369
R360
R361
R362
C357
L351
L354
R3
55
R356
R359
R366
C354
TP-E
R351
Y303
W611
SK351
Y304
R346
W338
R349
TP-47B
D352
D351
D356
UL MARK
5
1
MARK
T
C
B
C
B
E
/2!
E
CKF1674-BH1-1
W337
R363
R365
C352
C351
52
L3
L353
K351
W336
353
R
R354
R357
R358
R367
R368
C355
C356
R352
R345
R347
R348
W576
D353
D354
D355
TP-47G/R
TP-47R/G
2-2
TOP
CRT SOCKET PWB PATTERN
2-15
CONTENTS
SEMICONDUCTOR SHAPES
2-2
BLOCK DIAGRAM
2-3
CIRCUIT DIAGRAMS
MAIN PWB CIRCUIT DIAGRAMS
2-5
PATTERN DIAGRAMS
MAIN PWB PATTERN
2-13
SEMICONDUCTOR SHAPES
TRANSISTOR
BOTTOM VIEW
FRONT VI EW
TOP VIEW
CHIP TR
IC
BOTTOM VIEW FRONT VIEW TOP VIEW
CHIP IC
TOP VIEW
1 N
N
1
OUT
E
IN
IN OUTE
1 N
N
1
N
N
N
1
N
E
C
B
ECB
C
BE
BCE
(G)(D)(S )
ECB
ECB
CRT SOCKET PWB PATTERN
2-15
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