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AV-35750
AV-35770
AV-357 70s)
mNOTE ON USING CIRCUIT DIAGRAMS
1.SAFETY
The components identified by the
Z\symbol and shading
are critical for safety. For continued safety replace safety
critical components only with manufactures recommended
parts.
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/bulton
and variable resistor
:Color bar signal
:Original
setting
position
when shipped
:DC 20kQ/V
(4)Oscilloscope sweeping lime
'H
=> 20)NS/div
iV
=>5mSidiv
:Othors => Sweeping time is
(3)Internal resistance of tesler
specified
(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
eResistance value
No unit
:[Q]
K
{[KQ]
M
[MQ]
eRated allowable power
No indication
:1/6{W]
Others
:As specified
eType
No indication
:Carbon resistor
OMR
:Oxide metal film resistor
MFR
:Metal film resistor
MPR
:Metal plate resistor
UNFR
'Uninflammable resistor
FR
'Fusible resistor
* Composition resistor 1/2 [W] is specified as 1/2S or Comp.
(2)Capacitors
eCapacilance value
tor higher
'[pF]
less than 1
[pF]
eWithstand voltage
No indication
:DC5O0[V]
Others
:DC withstand voltage[V]
AC indicated
:AC withstand voltage[V]
* Electrolytic Capacitors
47/S50[Example}:Capacitance value[pF]/withstand voltage[V]}
eType
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)Coiis
No unit
'{pH}
Others
:As specified
(4)Power Supply
momen
°51(1396V)
Sms ee
7B 2(12V)
me
Cle
:oV
JOC
:5V
* Respective vollage values are indicated.
(5)Test Point
: Test point
: Only test point display
(6)Connecting method
CI
: Connector
O
: Wrapping or soldering
—>>—
-
: Receptacle
(7)Ground symboi
: LIVE side ground
: ISOLATED(NEUTRAL) side ground
: EARTH ground
: DIGITAL ground
FiyP
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 : (L) side GND and
the ISOLATED(NEUTRAL) : ( tr) 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
belween
the
LIVE
side
GND
and
ISOLATED(NEUTRAL)
side GND or never measure
with a
measuring apparalus (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 circult constants may be subject to
change for improvement without any notice.
Jul.1996
No51130
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