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AV28BT5EES / AV28BT5EEB
SERVICE MANUAL, PARTS LIST, SCHEMATICS
JVC COLOUR TELEVISION
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AV28BT5ENS / AV28BT5ENB AV28BT5EES / AV28BT5EEB
SCHEMATIC DIAGRAMS
COLOUR TELEVISION
AV28BT5ENS / AV28BT5ENB AV28BT5EES / AV28BT5EEB
CD-ROM No.SML200201
CONTENTS
NOTE ON USING CIRCUIT DIAGRAMS SEMICONDUCTOR SHAPES BLOCK DIAGRAM WAVEFORM DIAGRAMS CIRCUIT DIAGRAMS PATTERN DIAGRAMS VOLTAGE TABLE 2-1 2-2 2-3 2-4 2-5 2-11 2-15
COPYRIGHT
2001 VICTOR COMPANY OF JAPAN, LTD.
No.51881 Dec. 2001
WAVEFORM DIAGRAMS MAIN PWB Q802
8Vp-p(H)
AV28BT5ENS / AV28BT5ENB AV28BT5EES / AV28BT5EEB
AV28BT5ENS / AV28BT5ENB AV28BT5EES / AV28BT5EEB
STANDARD CIRCUIT DIAGRAM
NOTE ON USING CIRCUIT DIAGRAMS IC401
1.7Vp-p(H)
D
6pin
IC050
0.7Vp-p(H)
6pin
IC050
17pin
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.
1.4Vp-p(H)
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
Type No indication MM PP MPP MF TF BP TAN (3)Coils No unit
:Ceramic capacitor :Metalized mylar capacitor :Polypropylene capacitor :Metalized polypropylene capacitor :Metalized film capacitor :Thin film capacitor :Bipolar electrolytic capacitor :Tantalum capacitor :[ µ H] :As specified
IC401
17pin
IC401
30pin
IC401
29pin
IC401
2Vp-p(H)
19pin
: Original setting position when shipped :DC 20k :H :V :Others /V 20µS/div 5mS/div Sweeping time is specified
Others (4)Power Supply
0.7Vp-p(H)
0.8Vp-p(H)
0.9Vp-p(H)
:B1 :9V Respective voltage values are indicated (5)Test point :Test point (6)Connecting method :Connector :Only test point display
:B2 (12V) :5V
(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.
IC401
2Vp-p(H)
20pin
IC401
2Vp-p(H)
21pin
IC401
1Vp-p(H)
40pin
Q605
450Vp-p(H)
C
:Wrapping or soldering
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
4.INDICATIONS ON THE CIRCUIT DIAGRAM
(1)Resistors Resistance value No unit K M
IC401
47pin
IC701
4.8Vp-p(V)
1pin
IC701
0.5Vp-p(V)
9pin
IC501
1.2Vp-p
34pin
Rated allowable power No indication :1/ 16 [W] Others Type No indication OMR MFR MPR UNFR FR (2)Capacitors Capacitance value :Carbon resistor :Oxide metal film resistor :Metal film resistor :Metal plate resistor :Uninflammable resistor :Fusible resistor :As specified
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.
0.6Vp-p(V)
Composition resistor 1/2 [W] is specified as 1/2S or Comp.
CRT SOCKET PWB IC901
35Vp-p(H)
7pin
IC901
35Vp-p(H)
8pin
IC901
35Vp-p(H)
9pin
1 or higher less than 1 Withstand voltage No indication Others
:[pF] :[µF] :DC50[V] :DC withstand voltage [V]
AC indicated :AC withstand voltage [V] Electrolytic Capacitors 47/50[Example]:Capacitance value [µF]/withstand voltage[V]
2-4
No.51881
Dec. 2001 No. 51881
AV28BT5ENS / AV28BT5ENB AV28BT5EES / AV28BT5EEB
CONTENTS
SEMICONDUCTOR SHAPES BLOCK DIAGRAM WAVEFORM DIAGRAMS CIRCUIT DIAGRAMS
MAIN PWB CIRCUIT DIAGRAM MULTISOUND PWB CIRCUIT DIAGRAM CRT SOCKET PWB CIRCUIT DIAGRAM FRONT CONTROL PWB CIRCUIT DIAGRAM HEADPHONE JACK PWB CIRCUIT DIAGRAM
2-2 2-3 2-4
BLOCK DIAGRAM
8R 6/12W 8R 6/12W
AV28BT5ENS / AV28BT5ENB AV28BT5EES / AV28BT5EEB
SPEAKERS
AUDIO OUTPUTS TDA2615/6 TDA2614(MONO)
MAIN, FRONT CONTROL & HEAD PHONE JACK PWB PATTERN MULTISOUND & CRT SOCKET
2-11 2-13 2-15
VOLTAGE TABLE SEMICONDUCTOR SHAPES
TRANSISTOR
BOTTOM VIEW FRONT VIEW TOP VIEW CHIP TR
C
DIGITAL SOUND PROCESSOR
SCART2
VIDEO PROCESSOR TDA 884X
MSP 34X0D
CTI & COMB FILTER
VIDEO SWITCH TEA6415
E C B
E C B
E C B
B
E
IC
BOTTOM VIEW FRONT VIEW TOP VIEW
FRONTAV
SCART1
E C B
B C E (G)(D)(S)
1
N
IN
IN E OUT
1 N
1
N
I2C
OUT E
TV-TEXT CONTROLLER SDA 555X
TOP VIEW
N N
1
PLL TUNER UV1315/6
N
1 N
N
SERVICE CONNECTOR
2-2
No.51881
No.51881
NVM
KEYPAD
SMPS (Mc44604)
CHIP IC
IR.
115/150VDC +12VDCAud. -12VDCAud. 12VDC 8VDC 5VDC 3.3V st-by 2.5V st-by
VERTICAL OUTPUT TDA8351/6
HORIZONTAL OUTPUT
PATTERN DIAGRAMS
RGB AMP. TDA 6108
2-5 2-7 2-9 2-9 2-9
CRT
SVHS
FBT
2-3
CIRCUIT DIAGRAMS
MAIN PWB CIRCUIT DIAGRAM
AV28BT5ENS / AV28BT5ENB AV28BT5EES / AV28BT5EEB
AV28BT5ENS / AV28BT5ENB AV28BT5EES / AV28BT5EEB
MAIN PWB VE-20073447(AV28BT5EES/EEB) VE-20073586(AV28BT5ENS/ENB)
No.51881 2-5 2-6 No.51881
AV28BT5ENS / AV28BT5ENB AV28BT5EES / AV28BT5EEB
AV28BT5ENS / AV28BT5ENB AV28BT5EES / AV28BT5EEB
MULTISOUND PWB CIRCUIT DIAGRAM
MULTISOUND PWB VE-20078991(AV28BT5ENS/ENB, AV28BT5EES/EEB)
No.51881 2-7 2-8 No.51881
AV28BT5ENS / AV28BT5ENB AV28BT5EES / AV28BT5EEB
AV28BT5ENS / AV28BT5ENB AV28BT5EES / AV28BT5EEB
CRT SOCKET PWB CIRCUIT DIAGRAM
CRT SOCKET PWB VE-20074437
HEADPHONE JACK PWB CIRCUIT DIAGRAM
FRONT CONTROL PWB CIRCUIT DIAGRAM
HEAD PHONE JACK PWB VE-2005472
FRONT CONTROL PWB VE-20079113
No.51881
2-9
2-10
No.51881
AV28BT5ENS / AV28BT5ENB AV28BT5EES / AV28BT5EEB
PATTERN DIAGRAMS
AV28BT5ENS / AV28BT5ENB AV28BT5EES / AV28BT5EEB
FRONT CONTROL PWB PATTERN
MAIN PWB PATTERN
TOP
FRONT
HEADPHONE JACK PWB PATTERN
TOP
No.51881
2-11
2-12
No.51881
AV28BT5ENS / AV28BT5ENB AV28BT5EES / AV28BT5EEB
AV28BT5ENS / AV28BT5ENB AV28BT5EES / AV28BT5EEB
MULTISOUND PWB PATTERN
CRT SOCKET PATTERN
TOP
TOP
No.51881
2-13
2-14
No.51881
AV28BT5ENS / AV28BT5ENB AV28BT5EES / AV28BT5EEB
VOLTAGE TABLE
MAIN PWB
IC050
PIN NO. 1 2 3 4 5 6 7 8 9 10 VOLTAGE 2.8 4.5 2.9 4.8 2.9 3.2 0 2.9 7.9 4.0 VOLTAGE 0.3 3.7 0 0 2.5 3.0 4.5 4.5 6.7 0.1 3.7 7.8 4.0 0 3.0 0 3.7 5.4 3.5 3.1 3.4 2.1 3.5 3.5 3.5 0.1 3.0 3.0 PIN NO. 11 12 13 14 15 16 17 18 19 20 PIN NO. 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 VOLTAGE 3.0 0 4.0 2.8 4.0 4.0 4.0 4.0 0 3.7 VOLTAGE 2.4 2.4 2.4 2.4 0.3 2.5 2.5 4.7 7.8 2.8 5.0 0.1 0.9 3.1 4.0 0 3.0 2.3 2.3 4.6 4.6 2.0 3.8 3.8 4.3 2.3 2.9 3.3
AV28BT5ENS / AV28BT5ENB AV28BT5EES / AV28BT5EEB
IF PWB
IC701
PIN NO. 1 2 3 4 5 VOLTAGE 2.3 2.3 15 7.5 0 PIN NO. 6 7 8 9 VOLTAGE 45.2 7.7 0 7.5 Note) Although the symbol numbers of the level drive transistor and level output transistor are indicated as Q604 and Q606 on the wiring diagram, the numbers are indicated as Q601 and Q605 on the substrate, respectively. The following table shows the silk-printed symbol numbers on the substrate.
IC301
PIN NO. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 VOLTAGE 2.5 0 0 4.9 0 0 4.9 0 4.5 4.5 2.4 2.4 2.4 0.1 0.1 0.1 0 4.8 0 0 0 0 0 4.9 0.1 0.1 0 0 0 0 0 0 PIN NO. 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 VOLTAGE 3.7 3.7 0 3.7 3.7 6.8 7.8 6.5 0 3.6 3.7 3.7 0 3.7 3.7 0 3.7 3.7 0 3.7 3.7 2.6 3.7 0 4.9 0.1 0.1 0.1 0 2.3 2.3 0
IC100
PIN NO. 1 2 3 4 5 VOLTAGE 0 12.7 0 0 -12.6 PIN NO. 6 7 8 9 VOLTAGE 0 12.6 0 0
IC401
PIN NO. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28
IC501
PIN NO. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 VOLTAGE 0 0 0 3.3 3.3 3.3 3.3 0 2.4 0 3.3 0.9 2.4 0 0.1 0 0 2.4 0.3 0.1 0 2.1 3.3 3.5 3.1 3.1 PIN NO. 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 VOLTAGE 0 0 0 3.3 3.3 3.3 3.3 0.5 0.5 0 2.4 0.3 0.2 0.3 0 2.4 0 3.3 0 3.3 3.3 3.3 3.3 3.3 3.3 3.3
Q055 Q100 Q501 Q503 Q512 Q514 Q515 Q516 Q517 Q518 Q601 Q603 Q605 Q701 Q702 Q802 Q805 Q806 Q807
E(D) 2.4 0 11.9 3.3 5.4 0 4.8 3.2 4.5 3.2 0 15.2 0 0.1 0 167 0 0 0
C(S) 7.8 12.6 0 3.3 3.4 4.8 3.2 4.8 3.2 4.8 0 0 --0 0 0 0 0 11.5
B(G) 3.0 0 0 2.5 4.8 0 2.4 2.4 2.4 2.4 0.1 3.1 0 0.4 0.6 0.1 0.6 0.6 0
Q809 Cathode:11.3V Anode:0V Control terminal:2.4V
IC304
PIN NO. 1 2 3 4 VOLTAGE 2.4 2.4 2.4 0 PIN NO. 5 6 7 8 VOLTAGE 4.9 2.4 2.4 2.4
IC307
PIN NO. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 VOLTAGE 3.2 3.2 4.9 0 0.1 2.4 2.4 2.2 0 2.7 0 2.1 5.0 0 PIN NO. 15 16 17 18 19 20 21 22 23 24 25 26 27 28 VOLTAGE 0.1 0 4.3 3.0 3.5 3.3 3.3 3.3 3.5 4.5 0 3.4 0.1 0.1
IC801
PIN NO. 1 2 3 VOLTAGE 12.5 11.5 0 PIN NO. 4 5 6 VOLTAGE 2.6 12.4 0.1
IC502
PIN NO. 1 2 3 4 VOLTAGE 0 0 0 0 PIN NO. 5 6 7 8 VOLTAGE 0.1 0.1 3.3 3.3
IC802
PIN NO. 1 2 3 4 5 6 7 8 VOLTAGE 12.4 12.1 0.1 0 0.9 0.1 0.2 0.2 PIN NO. 9 10 11 12 13 14 15 16 VOLTAGE 0.8 2.6 2.3 0.2 3.0 2.4 2.6 2.4
IC804
PIN NO. 1 2 3 VOLTAGE 2.1 12.5 3.3
IC805
PIN NO. 1 2 3 VOLTAGE 12.4 0 7.9
Q301
E(D) C(S) B(G) 4.8 4.8 4.1
CRT SOCKET PWB
IC901
PIN NO. 1 2 3 4 5 VOLTAGE 3.2 2.9 3.2 0 6.0 PIN NO. 6 7 8 9 VOLTAGE 0.1 0.1 0.1 0.1
IC807
PIN NO. 1 2 3 VOLTAGE 9.1 0 5
No.51881
2-15
2-16
No.51881
AV28BT5ENS / AV28BT5ENB AV28BT5EES / AV28BT5EEB
VICTOR COMPANY OF JAPAN, LIMITED HOME AV NETWORK BUSINESS UNIT. 12, 3-chome, Moriya-cho, Kanagawa-ku, Yokohama, Kanagawa-prefecture, 221-8528, Japan
Printed in Japan VP 0112 DP2080