JVC AV-20320/S, AV-20321/S Schematics

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
BLOCK DIAGRAM
CIRCUIT DIAGRAMS
PATTERN DIAGRAMS
CHANNEL CHART
COPYRIGHT 2002 VICTOR COMPANY OF JAPAN, LTD.
2-1
2-2
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2-11
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
.
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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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