SCHEMATIC DIAGRAMS
COLOR TELEVISION
AV-20320
AV-20321
AV-20320/S
AV-20321/S
CD-ROM No.SML200203
BASIC CHASSIS
FV5
CONTENTS
NOTE ON USING CIRCUIT DIAGRAMS
SEMICONDUCTOR SHAPES
BLOCK DIAGRAM
CIRCUIT DIAGRAMS
PATTERN DIAGRAMS
CHANNEL CHART
COPYRIGHT 2002 VICTOR COMPANY OF JAPAN, LTD.
2-1
2-2
2-3
2-5
2-9
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No.51964
Mar. 2002
AV-20320
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 critical
components only with manufactures recommended parts.
2.SPECIFIED VOLTAGE AND WAVEFORM VALUES
The voltage and waveform values have been measured under the
foll owin g condition s.
(1)Input signal : Color bar signal
(2)Setting positions of
each knob/button and
variable resistor
(3)Internal resistance of tester
:DC 20k
/V
(4)Oscil loscope sweeping time
:H
20µS/div
:V
5mS/div
:Others
Sweeping time is
specified
(5)Voltage values
:All DC voltage values
Sin ce the voltage values of si gnal 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
Ty pe
No indication
:Carbon resistor
OM R
:Oxi de metal film resi stor
MFR
:Met al film resi stor
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 s hown 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 e xample, 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 a ny n otice.
NOTE
Due improvement in performance, some par t numbers show
in th e ci rcuit dia gram may not agree wi th those indicated i n
the part list.
When ordering parts, please use the numbers that appear
in the Part s List .
Ty pe
MM
:Metalized mylar capacitor
PP
:Polypropylene capacitor
MPP
:Metalized polypropylene capacitor
MF
:Metalized film capa citor
TF
:Thin film capacitor
BP
:Bipolar electrolytic capacitor
TAN
:Tantalum capacitor
(3) Coi ls
No unit
:[
µ
H]
Others
:As specified
(4)Power Supply
:B1
:9V
:5V
Respective voltage values are indicated
(5)Test point
:Test p oint
:Only test point display
(6)Connecti ng me thod
:Connector
:Wrapping or soldering
:Receptacle
(7)Ground symbol
:LIVE side ground
:ISOLATED(NEUTRAL) side ground
:EARTH ground
:DIGITAL ground
:[M ]
Capacitance valu e
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 C apacitors
47/50[Example]:Capacitance value [µF]/withstand voltage[V]
No indication
:Ceramic capacitor
:B2 (12V)
AV-20320
/S
,AV-20321
/S
AV-20321
CHANNEL CHART (CA)
MODE CHANNEL
TV CATV
2-12
BAND
MID E 18
SUPER P 29
HYPER W+15 51
ULTRA W+31 67
REAL DISP
02
VL 04
VH 10
03
05
06
07
08
09
11
12
13
A14
B15
C16
D17
F19
G20
H21
I22
J23
K24
L25
M26
W+1 37
W+2 38
W+3 39
W+4 40
W+5 41
W+6 42
W+7 43
W+8 44
W+9 45
W+10 46
W+11 47
W+12 48
W+13 49
W+14 50
W+16 52
W+17 53
W+18 54
W+19 55
W+20 56
W+21 57
W+22 58
W+23 59
W+24 60
W+25 61
W+26 62
W+27 63
W+28 64
W+29 65
W+30 66
W+32 68
W+33 69
W+34 70
N27
O28
Q30
R31
S32
T33
U34
V35
W36
TUNER
BAND
.
MODE CHANNEL
TV CATV REAL DISP
NOTE:
TO RECEIVE THE SUBSCRIPTION OR
PREMIUM PROGRAMMING FROM CERTAIN
CABLE COMPANIES.
SPECIAL ADAPTERS MAY BE REQUIRED.
No.51964
BAND
W+35 71
W+36 72
W+37 73
W+38 74
W+39 75
W+40 76
W+41 77
W+42 78
W+43 79
W+44 80
ULTRA W+60 101
SUB
MID
UHF
TOTAL 180CH
W+45 81
W+46 82
W+47 83
W+48 84
W+49 85
W+50 86
W+51 87
W+52 88
W+53 89
W+54 90
W+55 91
W+56 92
W+57 93
W+58 94
W+59 100
W+61 102
W+62 103
W+63 104
W+64 105
W+65 106
W+66 107
W+67 108
W+68 109
W+69 110
W+70 111
W+71 112
W+72 113
W+73 114
W+74 115
W+75 116
W+76 117
W+77 118
W+78 119
W+79 120
W+80 121
W+81 122
W+82 123
W+83 124
W+84 125
A-8 01
A-4 96
A-3 97
A-2 98
A-1 99
VHF 124CH
UHF 56CH
14
69
TUNER
BAND
.
82 !
,2$$
AV-20320
AV-20321
Mar. 2002 No. 51964
AV-20320
CHANNEL CHART (US)
MODE CHANNEL
TV CATV
BAND
REAL DISP
.
TUNER
BAND
02
03
VL 04
05
06
07
08
09
VH 10
11
12
13
A14
B15
C16
D17
MID E 18
F19
G20
H21
I22
J23
K24
L25
M26
N27
O28
P29
SUPER Q 30
R31
S32
T33
U34
V35
W36
W+1 37
W+2 38
W+3 39
W+4 40
W+5 41
W+6 42
W+7 43
W+8 44
W+9 45
W+10 46
W+11 47
W+12 48
W+13 49
W+14 50
HYPER W+15 51
W+16 52
W+17 53
W+18 54
W+19 55
W+20 56
W+21 57
W+22 58
W+23 59
W+24 60
W+25 61
W+26 62
W+27 63
W+28 64
W+29 65
W+30 66
ULTRA W+31 67
W+32 68
W+33 69
W+34 70
MODE CHANNEL
TUNER
TV CATV REAL DISP
.
BAND
W+35 71
W+36 72
W+37 73
W+38 74
W+39 75
W+40 76
W+41 77
W+42 78
W+43 79
W+44 80
W+45 81
W+46 82
W+47 83
W+48 84
W+49 85
W+50 86
W+51 87
W+52 88
W+53 89
W+54 90
W+55 91
W+56 92
W+57 93
W+58 94
W+59 100
ULTRA W+60 101
W+61 102
W+62 103
W+63 104
W+64 105
W+65 106
W+66 107
W+67 108
W+68 109
W+69 110
W+70 111
W+71 112
W+72 113
W+73 114
W+74 115
W+75 116
W+76 117
W+77 118
W+78 119
W+79 120
W+80 121
W+81 122
W+82 123
W+83 124
W+84 125
A-8 01
A-4 96
SUB A-3 97
MID A-2 98
A-1 99
14
UHF
69
TOTAL 180CH
VHF 124CH
UHF 56CH
NOTE:
TO RECEIVE THE SUBSCRIPTION OR
PREMIUM PROGRAMMING FROM CERTAIN
CABLE COMPANIES.
SPECIAL ADAPTERS MAY BE REQUIRED.
BAND
AV-20321
CONTENTS
AV-20320
AV-20321
SEMICONDUCTOR SHAPES
BLOCK DIAGRAM
CIRCUIT DIAGRAMS
MAIN PWB CIRCU IT DIAGRAM
PATTERN DIAGRAMS
MAIN PWB & CRT SOCKET PATTERN
CHANNEL CHART
SEMICONDUCTOR SHAPES
TRANSISTOR
BOTTOM V IEW
IC
CHIP IC
2-2
BOTTOM VIEW FRONT VIEW TOP VIEW
N
N
E
C
B
OUT
E
IN
N
1
N
ECB
IN OUTE
BCE
(G)(D)(S )
FRONT VI EW
1 N
TOP VIEW
ECB
1
N
ECB
1 N
CHIP TR
1
TOP VIEW
C
BE
N
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No.51964No.51964
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