Note On Using Circuit Diagrams - JVC AV-2771S Service Manual

| AV-2771S
AV-2771Sws) STANDARD CIRCUIT DIAGRAM
u NOTE ON USING CIRCUIT DIAGRAMS
1.SAFETY eType
The components identified by the 4\symbol and shading No indication :Ceramic capacitor
are critical for safety. For continued safety replace safety MY :Mylar capacitor
critical components only with manufactures recommended MM :Metalized mylar capacitor
Parts. PP :Polypropylene capacitor
MPP :Metalized polypropylene capacitor
2.SPECIFIED VOLTAGE AND WAVEFORM ME :Metalized film capacitor
VALUES TF 'Thin film capacitor
The voltage and waveform values have been measured under BP 'Bipolar electrolytic capacitor
the following conditions. TAN 'Tantalum capacitor
(1)Input signal :Color bar signal (3)Coils
(2)Setting positions No unit [pH]
of each knob/button Others :As specified
and variable resistor :Original setting position (4)Power Supply
when shipped mma (8 1(129.3V)
(3)Internal resistance of tester :BDC 20kQ/VV me me 3B2(12V)
(4)Oscilloscope sweeping time tH => 20pS/div mom :9V
iV =>5mS/div omor. sv
'Others => Sweeping time is * Respective voltage values are indicated.
specified (5) Test Point
(5)Voltage values :All DC voltage values ? : Test point
* Since the voltage values of signal circuit vary to some extent
(6)Connecting method
eRated allowable power
No indication :1/6[W]
5.NOTE FOR REPAIRING SERVICE
Others :As specified
out.
(2) Do not short between the LIVE side GND and NEUTRAL
side GND or never measure with a measuring apparatus
eWithstand voltage
(oscilloscope, etc.) the LIVE side GND and NEUTRAL side
No indication
:DC50[V]
GND
at the same time. If the above precaution
is not
Others
:DC withstand voltage[V]
respected, a fuse or any parts will be broken.
AC indicated :AC withstand voltage[V]
* Electrolytic Capacitors
47/50{Example]:Capacitance value[pF]/withstand voltage[V]
eCapacitance value
jor higher —:[pF]
less than 1 [pF]
© Since the. circuit diagram is a standard one, the
circuit and circuit constants may be subject to
change for improvement without any notice.
|
1
|
|
:
caution is not respected, an electric shock may be caused.
Jul. 1991 No.50577