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AV-21ETG2
AV-2124EE
Service Manual, Schematics, Parts List
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AV-21ETG2 AV-2124EE
SCHEMATIC DIAGRAMS
COLOUR TELEVISION
AV-21ETG2 AV-2124EE
CD-ROM No.SML200112
BASIC CHASSIS
CG
CONTENTS
NOTE ON USING CIRCUIT DIAGRAMS SEMICONDUCTOR SHAPES BLOCK DIAGRAM CIRCUIT DIAGRAMS PATTERN DIAGRAMS 2-1 2-2 2-3 2-7 2-9
COPYRIGHT
2001 VICTOR COMPANY OF JAPAN, LTD.
No.51893 Nov. 2001
AV-21ETG2 AV-2124EE
AV-21ETG2 AV-2124EE
CONTENTS
SEMICONDUCTOR SHAPES BLOCK DIAGRAM CIRCUIT DIAGRAMS
MAIN PWB CIRCUIT DIAGRAM
2-2 2-3
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. Type No indication MM PP MPP MF TF BP TAN (3)Coils No unit : Original setting position when shipped :DC 20k :H :V :Others /V 20µS/div 5mS/div Sweeping time is specified Others (4)Power Supply :B1 :9V Respective voltage values are indicated (5)Test point :Test point (6)Connecting method :Connector :Wrapping or soldering :Only test point display :B2 (12V) :5V :[ µ H] :As specified :Ceramic capacitor :Metalized mylar capacitor :Polypropylene capacitor :Metalized polypropylene capacitor :Metalized film capacitor :Thin film capacitor :Bipolar electrolytic capacitor :Tantalum capacitor
2-5
PATTERN DIAGRAMS
MAIN PWB & CRT SOCKET PATTERN
2-9
2.SPECIFIED VOLTAGE AND WAVEFORM VALUES
The voltage and waveform values have been measured under the following conditions. (1)Input signal (2)Setting positions of each knob/button and variable resistor (3)Internal resistance of tester (4)Oscilloscope sweeping time : Colour bar signal
SEMICONDUCTOR SHAPES
TRANSISTOR
BOTTOM VIEW FRONT VIEW TOP VIEW CHIP TR
C
(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 (7)Ground symbol :LIVE side ground :ISOLATED(NEUTRAL) side ground :[ ] :[K ] :[M ] :EARTH ground :DIGITAL ground :Receptacle
E C B
E C B
4.INDICATIONS ON THE CIRCUIT DIAGRAM
B C E (G)(D)(S)
E C B
E C B
B
E
(1)Resistors Resistance value No unit
IC
BOTTOM VIEW FRONT VIEW TOP VIEW
K M
1
N
Rated allowable power No indication :1/ 16 [W] Others Type No indication OMR MFR MPR :As specified :Carbon resistor :Oxide metal film resistor :Metal film resistor :Metal plate resistor :Uninflammable resistor :Fusible resistor
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.
OUT E IN
IN E OUT
1 N
1 N
CHIP IC
TOP VIEW
N N
1
UNFR FR (2)Capacitors Capacitance value 1 or higher less than 1
N 1 N
N
Composition resistor 1/2 [W] is specified as 1/2S or Comp.
:[pF] :[µF] :DC50[V] :DC withstand voltage [V]
Withstand voltage No indication Others
AC indicated :AC withstand voltage [V] Electrolytic Capacitors 47/50[Example]:Capacitance value [µF]/withstand voltage[V]
2-2
No.51856
Nov. 2001 No. 51893
BLOCK DIAGRAM
AV-21ETG2 AV-2124EE
AV-21ETG2 AV-2124EE
IF
TU001 TUNER
Q102 IF AMP
SF101
IC651 AUDIO AMP
SP OUT
8
SP
AUDIO 3
SF102
SP
Q103 SW
18.19 SCL/SDA SAW 30 AUDIO OUT
ECO
HEAD PHONE
FRONT IN
VIDEO
REMOCON
37.38 SCL SDA
25 3.58/ OTH
AUDIO
IC201 1 CHIP DECODER
RGB OSD RGB 30.31.32 6.7.8 EXT RGB VIDEO VIDEO AUDIO OUT IN IN 24 38 29 H.OUT 42 V.OUT 46 10.11.12
KEY
IC702 MEMORY
SCL SDA
IC701 MICRO COMPUTER
IND.
CRT SOCKET PWB
R / G /B
REAR
VIDEO
RGB DRV
V01 CRT
IN
AUDIO
VIDEO
OUT
AUDIO V.OUT
IC421
VERT.OUT
DY(V)
REG. D901
RECT
IC971
9V REG.
REG. IC972
5V REG.
H.OUT
Q522
H.OUT
DY(H)
DEF.YOKE
FOCUS
T921
POWER SW
IC921
POWER REG.
SW TRANSF.
B1
B1
T522 HVT
SCREEN EHV
AC IN
CF901
PC921
VOLTAGE FEEDBACK
IC941
ERROR AMP
MAIN PWB
No.51893
2-3
2-4
No.51893
CIRCUIT DIAGRAMS
AV-21ETG2 AV-2124EE
AV-21ETG2 AV-2124EE
MAIN PWB CIRCUIT DIAGRAMS [1/2]
4.9V 4.1V
5.4V
5V 4.9V 4.9V
MAIN PWB
SCG-1292A-H2
[AV-21ETG2]
AT24C08-21DTT2
4.7V 0V 0V 0.7V 4.9V 4.2V 0.1V 2.4V 0V 4.9V 2.9V 4.9V 4.9V 4.9V 0V 4.9V 4.8V 4.9V 4.9V
SCG-1293A-H2
[AV-2124EE]
14.4V 4.9V 4.9V 4.9V
4.9V
12.4V 4.9V 4.9V 1.7V 4.9V 0V 4.1V 4.9V 0V 0V 0V 0V 4.9V 4.7V 4.7V 4.4V 4.4V 4.9V 4.7V 0.1V 0V 0V
5.5V
0.3V 10.5V
10.7V
10.9V
22.1V
15V 15.1V 0V -2.2V 0.6V 0.3V 0V
DIFFERENCE LIST (*PARTS) SCG-1292A-H2 IC701 MN1873287JF SCG-1293A-H2 MN1873287JE
9V 4.9V 4.2V 4.2V
3.3V
2.4V 0V
0.2V 0.1V 0.2V 2.4V
0.8V 0.3V 4V
3.3V
IC301 2
0.6V 4.3V 4.9V 5V 3V 1.1V 3.7V 3.4V 0.9V 6.2V 2.7V 4.3V 4.2V 8.5V 4.2V 4.6V 9V 4.1V 4.2V 3.2V 3.9V 3.6V 3.4V
36
0V
2.4V 0V
3.3V 0.7V 2.4V 0V
0.5V 0.1V 1.7V
4V
4V
0V
IC301
0.1V 0.5V 2.4V 3.3V 4.9V 2.2V 1.5V 4.9V 0.5V 4.1V 0.1V 4.2V 6.2V 3.3V 0V 4.9V 4.9V 4.9V 9V 3.2V 3.1V 3.1V 2.8V 4.1V 9V 3.8V 2.7V 2.7V 1.8V 1.8V 3.6V 3.2V 2.9V 3.4V 4.9V 4.9V 0V 3.8 V 0.1 V
39 2 2.5
42 2.2
46
4.9V
3.7V 0V
0V
32.6V 3.2V 4.9V 1.3V 1.3V 1.2V 1.2V 4.9V
9V 0V 0.2V 9V 2.2V 1.2V 8.1V 4.8V 4.1V 1.8V 1.2V 1.2V 1.3V 1.2V 0V 1.5V 4.3V 4.2V
0.3V 0V
IC301 3
10
IC301 3.4
11
IC301 12 3.4
No.51893
2-5
2-6
No.51893
MAIN PWB CIRCUIT DIAGRAM [2/2]
AV-21ETG2 AV-2124EE
AV-21ETG2 AV-2124EE
PICTURE TUBE
A51KQK99X
IC421 50
5
CRT COCKET
.1 AC275V MPP
IC421 3 25
6
3.7V 24.7 1V V
24.9V 14.6 V
3.7V
470p AC250V
11.8V
9V
Q353 120
C
Q351 120
C
.047 AC275V MPP 470p AC250V
4.9V
CRT SOCKET PWB(1/2)
(Within MAIN PWB)
[AV-21ETG2] [AV-2124EE]
7.2V
AC250V
AC250V
SCG-1292A-H2
0.2V 0.2V
Q352 120
C
11.4V
4.9V 0V
SCG-1293A-H2
5.5V
AC250V
-0.2V
STR-G6653
137.5V 0.1V
15.4V
15.2V
9.7V
14.6V 0.2V
C525 MPP .0097 1.5KVH QFZ0200-972 .33 250V QFZ0197-334 MPP QQLZ026-240
QQH0102-001
16.9V 1V
0.1V 3.9V
Q521 1
B
Q522 2 Q521 20 C
B
1/2W
R582 22K 1/16W NRSA63J-223X
B1
114.5V
114.8V 4.9V 0V 0V 114.5V
2.2 1/4W
16.9V
15.4V
T522
6V 14.3V 114.9V 13.8V
3 70 240
5
-H2
3.9 10W QRT029J -1R2 1.2 2W .22 560K 33K
SCG -1293A-H2 QRF074K -4R7 4.7 7W QRT029J -1R8 1.8 2W .33 X X QQW0124 -001
5.5V 0V
AC250V
0V 4.3V
TP-91 ( B1) TP-E ( )
1 1000 28
7 220
9
1/2W
MAIN PWB (1/2)
SCG-1292A-H2
SCG-1293A-H2
[AV-2124EE] [AV-21ETG2]
QQD0061-001
No.51893
2-7
2-8
No.51893
PATTERN DIAGRAMS
AV-21ETG2 AV-2124EE
AV-21ETG2 AV-2124EE
MAIN PWB & CRT SOKET PWB PATTERN
MAIN PWB
TP-E
FRONT
TP-91 (B1)
CRT SOCKET PWB
TOP
No.51893
2-9
2-10
No.51893
82 ,2$$
VICTOR COMPANY OF JAPAN, LIMITED HOME AV NETWORK BUSINESS UNIT. 12, 3-chome, Moriya-cho, Kanagawa-ku, Yokohama, Kanagawa-prefecture, 221-8528, Japan AV21ETG2-H #4 AV2124EE-H #4
Printed in Japan VP 0111 DP6060