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AV-28WFT1EPG/EPS/EIS
AV-28WFT1EKS/EK
AV-32WFT1EPG/EPS
AV-28WFT1EPG/EPS/EIS
AV-28WFT1EKS/EK
AV-32WFT1EPG/EPS
AV-32WFT1EKS
AV-32WFT1EKS
STANDARD
CIRCUIT DIAGRAM
@ NOTE ON USING CIRCUIT DIAGRAMS
1.
SAFETY
The components identified by the4\ 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
:PAL Colour bar signal
(2)Setting
positions
of
each
knob/button
and
variable resistor
:Original setting position
when shipped
(3)Internal resistance of tester
:DC 20kQ2/V
(4)Oscilloscope sweeping time
:H
=> 20uS/div
V
=
5mS/div
'Others
=> Sweeping time is
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]
@|n the PW board
:R1209—R209
4.INDICATIONS ON THE CIRCUIT DIAGRAM
(1)Resistors
@Resistance value
No unit
[Q]
K
[KQ]
M
{1M Q]
@Rated allowable power
No indication
AHMO[W]
Others
'As specified
@Type
'No indication
:Carbon resistor
OMR
:Oxide metal film resistor
MFR
:Metal film resistor
MPR
:Metal plate resistor
UNFR
:'Uninflammble resistor
FR
:Fusible resistor
*Composition resistor 1/2 [W] is specified as 1/2S or Comp.
(2)Capacitors
@ Capacitance value
41 or higher
'[pF]
less than 1
[UF]
@Withstand voitage
No indication
:DC50[V]
AC indicated
:AC withstand voltage [V]
Others
'DC withstand voltage [V]
*Electrolytic Capacitors
47/50[Example]:Capacitance value [yF]/withstand. voltage[V]
@Type
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)Coils
No unit
:{uH]
Others
'As specified
(4)Power Supply
SEs
«SOB
m= of
Ef
:12V(B2)
mm
ov
DIPIP
It
sy
*Respective voltage values are indicated
(5)Test point
'Test point
v
:Only test point display
(6)Connecting method
{J
:Connector
'Wrapping or soldering
—>-
t+
'Receptacle
(7)Ground symbol
:LIVE side ground
:ISOLATED(NEUTRAL) side ground
'EARTH ground
:DIGITAL ground
5.NOTE FOR REPAIRING SERVICE
This model's
power circuit is partly different in the GND.
The
ISOLATED(NEUTRAL)
: (4,) side GND. Therefore, care must be
taken for the following points.
(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.
Fire
R
}Since the circuit diagram is a standard one, the circuit and
circuit constants may be subject to change for improvement
without any notice.
Feb. 2000 No.51694
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