Page 1
SCHEMATIC DIAGRAMS
COLOUR TELEVISION
AV-21PS
AV-21PS
AV-21PS
++−
−
■ APPLICABLE MODELS
This standard circuit diagram is applicable to the following models.
However, there will be dif ferences between this model and the following applicable models. For the differences,
please refer to "PARTS DIFFERENCE TABLE" in the service manual of the following applicable models.
Basic Model (this Model)
AV-21PS
(Service Manual: No. 56018, Jun. 2000)
AV-DX21(HK) (Service Manual: No. 56019, Jun. 2000)
AV-21PS(AU) (Service Manual: No. 56020, Jun. 2000)
AV-21P9(BK) (Service Manual: No. 56021, Jun. 2000)
AV-21P8TEE (Service Manual: No. 56038, Jun. 2000)
Applicable Models
COPYRIGHT 2000 VICTOR COMPANY OF JAPAN, LTD.
No. 56018 2-1
No. 56018
Jun. 2000
Page 2
STANDARD CIRCUIT DIAGRAM
AV-21PS
■ NOTE ON USING CIRCUIT DIAGRAMS
1. SAFETY
The components identified by the
critical for safety. For continued safety replace safety critical
components only with manufactures recommended parts.
2. SPECIFIED VOL T AGE AND W AVEFORM V ALUES
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 20kΩ/V
(4)Oscilloscope sweeping time : H ➞ 20µS/div
(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 : [Ω]
K: [KΩ]
M : [MΩ]
● Rated allowable power
No indication : 1/4 [W]
Others : As specified
● Type
No indication : Carbon resistor
OMR : Oxide metal film resistor
MFR : Metal film resistor
MPR : Metal plate resistor
UNFR : Non-flammable resistor
FR : Fusible resistor
* Composition resistor 1/2 [W] is specified as 1/2S or Comp.
(2)Capacitors
● Capacitance value
1 or higher : [pF]
less than 1 : [µF]
● Withstand voltage
No indication : DC50 [V]
AC indicated : AC withstand voltage [V]
Others : DC withstand voltage [V]
* Electrolytic Capacitors
47/50 [Example]: Capacitance value [µF]/withstand voltage [V]
!!
! symbol and shading are
!!
: Original setting position when
shipped
: V ➞ 5mS/div
: Others ➞ Sweeping time is
specified.
● Type
No indication : Ceramic capacitor
MY : Mylar capacitor
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 : [µH]
Others : As specified
(4)Power Supply
: B1
: 12V
: 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
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 ISOLA TED (NEU-
TRAL) side GND or never 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.
No. 56018 2-3
Page 3
AV-21PS
CONTENTS
SEMICONDUCTOR SHAPES ........................................................... 2-4
BLOCK DIAGRAM ............................................................................ 2-5
CIRCUIT DIAGRAMS
MAIN PWB CIRCUIT DIAGRAM............................................................................................... 2-7
AV SW PWB CIRCUIT DIAGRAM ............................................................................................ 2-9
IF PWB CIRCUIT DIAGRAM................................................................................................... 2-11
FRONT CONTROL PWB CIRCUIT DIAGRAM....................................................................... 2-13
CRT SOCKET PWB CIRCUIT DIAGRAM .............................................................................. 2-15
INNER PIN PWB CIRCUIT DIAGRAM.................................................................................... 2-17
ALC PWB CIRCUIT DIAGRAM .............................................................................................. 2-18
PATTERN DIAGRAMS
MAIN PWB PATTERN............................................................................................................. 2-19
AV SW PWB PATTERN........................................................................................................... 2-21
IF PWB PATTERN................................................................................................................... 2-23
FRONT CONTROL PWB PATTERN ....................................................................................... 2-24
CRT SOCKET PWB PATTERN............................................................................................... 2-25
INNER PIN PWB PATTERN.................................................................................................... 2-26
ALC PWB PATTERN............................................................................................................... 2-27
SEMICONDUCTOR SHAPES
TRANSISTOR
BOTTOM VIEW
E
C
B
IC
BOTTOM VIEW
OUT
E
IN
CHIP IC
E
CB
IN E OUT
B
(G)C(D)E(S)
FRONT VIEW
1N
TOP VIEW
TOP VIEW
CHIP TR
C
E
CB
E
CB
1N
BE
TOP VIEWFRONT VIEW
1N
N
N
N
1
N
2-4 No. 56018
1
N
Page 4
BLOCK DIAGRAM
AV-21PS AV-21PS
IN
S/VIDEO-1
S1
IN
VIDEO-2
LINE
OUT
V1
L1
R1
3
YC
V2
L2
R2
V
L
R
IF PWB
4
Q101
IF AMP
Y
C
AV SW PWB
Q102
SW
1
2
4
7
8
10
9
11
13
14
16
29
28
26
TU001
V
L
R
SF101
MAIN IC107
N3/OTH
IF
ENA,DATA,CLOCK,LOCK
IC401
VIDEO
SW
C.OUT
Y.OUT
L.OUT
R.OUT
V.OUT
TV.L
TV.R
TV.V
C.IN
Y.IN
48
46
47
45
43
39
38
40
35
37
4
V.IN
5
V.IN
Q151
BUFFER
18
V.OUT
IC101
PIF/SIF
DET.
13
SIF OUT
SIF
Q101
IF AMP
ALC PWB
IC604 ALC
7
CTL
1
L IN L OUT
10
IC301 COMB FILTER Y/C SW
R OUT
R IN
578 10 1112
CF106
6.0
TRAP
IC702
MEMORY
SF101
SF102
8
13
19
CF103
4.5
TRAP
SCL
SDA
5
6
IC601
SURROUND
C.OUT
Y.OUT
CF104 5.5
CF105 6.5
TRAP
MICRO COMPUTER
IC101
P.IF/S.IF
SELECTOR
(L)
311
(R)
5
Q302
BUFFER
4
V.IN
3
Q103
BUFFER
IC701
ALC
35
17
Q105-Q107
BUFFER
IC602
VOL & TONE
6
NTSC COMB FILTER
DL301
1
Q107
BUFFER
TV.V
17(L)
16(R)
OSD
V/C DEF.
PROCESSOR
YC
45 42 29
60
SIF
58
MULTI SOUND
IC603(1/2)
D901
RECT
TRANSF.
IC921
POWER
REG.
MAIN PWB
IC201
VM
IC501
PROCESSOR
L
IC603(2/2)
T921
SW
4
H.OUT
53
V.OUT
12,13,14
RGB
LR
34 33
R
Q971
LOW-B SW
Q973
LOW-B SW
IC941
ERROR AMP
PC921
VOLTAGE
FEEDBACK
IC973
5V REG
FRONT CONTROL
PWB
F901
ECO
REMOCON
KEY
IND.
P SW
SP01
SP02
HEADPHONE
FRONT IN
VIDEO-3
V
L
R
AC IN
IC681
AUDIO AMP
LR
113
6
L
8
R
CRT SOCKET
PWB
R/G/B
B1
Q302
VM AMP
IC451
VERT. DRV
Q522
H.OUT
IC421
VERT. OUT
IC974
5V REG
IC971
12V REG
IC972
9V REG
5V
5V
12V
9V
V.OUT
H.OUT
T522
HVT
RGB
DRV
VM
FOCUS
SCREEN
EHV
D507
V01
CRT
DY(V)
DY(H)
DEF.YOKE
INNER PIN PWB
No. 56018 No. 560182-62-5
Page 5
CIRCUIT DIAGRAMS
MAIN PWB CIRCUIT DIAGRAM
AV-21PS AV-21PS
ALC PWB ASS’ Y
FRONT PANEL
PWB ASS’ Y
CRT SOCKET
PWB ASS’ Y
CRT SOCKET
PWB ASS’ Y
AV-21PS AV-21PS
SCM-1612A-H2 (AV-21PS)
No. 56018 2-7 No. 560182-8
Page 6
AV SW PWB CIRCUIT DIAGRAM
AV-21PS AV-21PS
FRONT CONTROL
PWB ASS’ Y
ALC PWB ASS’ Y
ALC
PWB
ASS’ Y
MAIN PWB
ASS’ Y
MAIN PWB
ASS’ Y
No. 56018 No. 560182-62-5
SCM0Y501A-H2 (AV-21PS)
2-102-9
Page 7
IF PWB CIRCUIT DIAGRAM
AV-21PS AV-21PS
SCM0F301A-H2 (AV-21PS)
AV-21PS
AV-21PS
AV-21PS
AV-21PS
No. 56018 2-7 No. 560182-8
2-11
2-12
Page 8
FRONT CONTROL PWB CIRCUIT DIAGRAM
AV-21PS AV-21PS
QMP40D0-200J5/
QMP40D0-200J3
SCM-8302A-H2 (AV-21PS)
L01
DEG COIL
QQW0052-001
AV-21PS
No. 56018 No. 560182-62-5
2-142-13
Page 9
CRT SOCKET PWB CIRCUIT DIAGRAM
AV-21PS AV-21PS
CRT SOCKET
SCM-3302A-H2 (AV-21PS)
No. 56018 2-7 No. 560182-8
2-15
2-16
Page 10
AV-21PS AV-21PS
AV SW PWB ASS’ Y
AV SW PWB ASS’ Y
MAIN PWB ASS’ Y
ALC PWB ASS’ Y
SCM0A105A-H2 (AV-21PS)
ALC PWB CIRCUIT DIAGRAMINNER PIN PWB CIRCUIT DIAGRAM
SCM-2102A-H2 (AV-21PS)
No. 56018 No. 560182-62-5
2-182-17
Page 11
AV-21PS AV-21PS
PATTERN DIAGRAMS
MAIN PWB PATTERN
( )
TP-E
TP-91
(B1)
FRONT
( )
No. 56018 2-7 No. 560182-8
2-19
2-20
Page 12
AV SW PWB PATTERN
AV-21PS AV-21PS
TOP
No. 56018 No. 560182-62-5
( )
2-222-21
Page 13
TOP
AV-21PS AV-21PS
FRONT CONTROL PWB PATTERNIF PWB PATTERN
( )
( )
FRONT
No. 56018 2-7 No. 560182-8
2-242-23
Page 14
AV-21PS AV-21PS
FRONT
( )
CRT SOCKET PWB PATTERN INNER PIN PWB PATTERN
TOP
( )
No. 56018 No. 560182-62-5
2-262-25
Page 15
ALC PWB PATTERN
AV-21PS
( )
TOP
No. 56018 2-27
Page 16
AV-21PS
VICTOR COMPANY OF JAPAN, LIMITED
TELEVISION RECEIVER DIVISION 1106 Heta, Iwai-city, Ibaraki-prefecture, 306-0698, Japan
No. 560182-PB
Printed in Japan
CTH 0006
CRT
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