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AV-14AM
AV-14AM STANDARD CIRCUIT DIAGRAM
n 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 MY MM PP MPP MF TF BP TAN (3)Coils No unit Others (4)Power Supply :Ceramic capacitor :Mylar capacitor :Metalized mylar capacitor :Polypropylene capacitor :Metalized polypropylene capacitor :Metalized film capacitor :Thin film capacitor :Bipolar electrolytic capacitor :Tantalum capacitor :[µH] :As specified :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
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 :Original setting position when shipped (3)Internal resistance of tester (4)Oscilloscope sweeping time :DC 20k¶/V :H :V Ë 20µS/div Ë 5mS/div each knob/button and variable resistor : Colour bar signal
:Others Ë Sweeping time is specified (5)Voltage values :All DC voltage values S ince 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 K M :[¶] :[K¶] :[M¶]
(7)Ground symbol :LIVE side ground
:ISOLATED(NEUTRAL) side ground :EARTH ground :DIGITAL ground
Rated allowable power No indication :1/16[W] Others Type No indication OMR MFR MPR UNFR FR (2)Capacitors Capacitance value 1 or higher less than 1 Withstand voltage No indication AC indicated Others :DC50[V] :AC withstand voltage [V] :DC withstand voltage [V] :[pF] :[µF] :As specified :Carbon resistor :Oxide metal film resistor :Metal film resistor :Metal plate resistor :Uninflammable resistor :Fusible resistor
5.NOTE FOR REPAIRING SERVICE
This models 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 ( 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.
*Composition resistor 1/2 [W] is specified as 1/2S or Comp.
*Electrolytic Capacitors 47/50[Example]:Capacitance value [µF]/withstand voltage[V]
VP0009 DP5054
Sep. 2000 Jun. 1998 1 No.56091
AV-14AM
AV-14AM
CONTENTS
SEMICONDUCTOR SHAPES BLOCK DIAGRAM CIRCUIT DIAGRAMS PATTERN DIAGRAMS
MAIN PWB PATTERN 2-9 CRT SOCKET PWB PATTERN 2-11 2-2 2-3
CRT SOCKET PWB PATTERN(Within MAIN PWB)
MAIN PWB CIRCUIT DIAGRAMS(Inc. CRT SOCKET PWB) 2-5
TOP
SEMICONDUCTOR SHAPES
TRANSISTOR
BOTTOM VIEW FRONT VIEW TOP VIEW CHIP TR
C
+ *
- + *
* + /,5
- + *
- + *
B
E
IC
BOTTOM VIEW FRONT VIEW TOP VIEW
1
OUT E IN
IN E OUT
1 N
1 N
N
CHIP IC
TOP VIEW
N N
1
N
1 N
N
2-2
No.56091
No.56091
2-11
AV-14AM
AV-14AM
BLOCK DIAGRAM
TU001 TUNER
IF
Q102 IF AMP
SF101
IC651 AUDIO AMP
AUDIO 3
SP OUT
8
SP
SF102
Q103 SW
18.19 SCL/SDA 37.38 SCL SDA 25 3.58/ OTH SAW 30 AUDIO OUT
HEAD PHONE
FRONT IN
VIDEO AUDIO
REMOCON
IC702 MEMORY
SCL SDA
IC701 MICRO COMPUTER
IC201 1 CHIP DECODER
OSD RGB EXT RGB VIDEO VIDEO AUDIO OUT IN IN 24 38 29 H.OUT 42 RGB 10.11.12
KEY IND.
30.31.32
6.7.8
V.OUT 46
CRT SOCKET PWB
R / G /B
REAR
VIDEO
RGB DRV
V01 CRT
IN
AUDIO
VIDEO
OUT
AUDIO
V.OUT
REG. D901
RECT
VERT.OUT
DY(V)
H.OUT
IC421
5/9V REG.
B1
IC901
H.OUT
Q522
DY(H)
DEF.YOKE
POWER SW
POWER REG.
IC921
SW TRANSF.
T921
FOCUS B1
T522 HVT
SCREEN EHV
AC IN
CF901
VOLTAGE FEEDBACK
PC921
ERROR AMP
IC941
MAIN PWB
No.56091
2-3
2-4
No.56091
AV-14AM
AV-14AM
CIRCUIT DIAGRAMS
MAIN PWB CIRCUIT DIAGRAM [1/2]
No.56091
2-5
2-6
No.56091
AV-14AM
AV-14AM
MAIN PWB CIRCUIT DIAGRAM [2/2]
No.56091
2-7
2-8
No.56091
AV-14AM
AV-14AM
PATTERN DIAGRAMS
MAIN PWB PATTERN
TP-E
FRONT
TP-91 (B1)
No.56091
2-9
2-10
No.56091