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AV-2 7508S ws
AV-2 7608S ws
JV
NOTICE
The voltage reading and wavetoun are measured at Bach
point with a multi-meter and an oscilloscope while receiv-
ing a service color bar gignal with a sufficient: sensitivity:
The measurements
were
made
with each VR under the
~ condition just after the shipment. The figures of the signal
circuits may be more or less different after adjustments, so
use the figures simply for reference.
Multimeter used
DC 20kQ/V
Given figures are all DC galaues
Sweep speed of oscilloscope
H.—
20 pS/div.
V —
5 mS/div.
Others —
sweep speed specified
Since the schematic diagram is a standard one, the circuit
and circuit constants
may
be subject to change for im-
, provement without any notice.
- SAFETY
.
FR (ek
) denotes a fusible resistor which operates as a
fuse. When replacing fusible resistors parts indicated with
black shading ( #@@
) in the circuit diagrams, be sure to en-
sure safety by using designated parts.
_As to other
parts too,
use designated
parts to maintain
safety and performance. .
"INDICATION
OF PARTS
SYMBOL
Inside board
(Example)
SGX-1004A
R1209-—R209
Outside board
(Example).
ROOO1—RO1
SCHEMATIC
DIAGRAM
INDICATION
Resistor
,
© Resistance value
Without unit: [Q]
K':
©
Rated allowable power
. Without indication : 1/6W
-
' Others Indicated
° - Type
{kQ]
M
: [MQ]
_ Without indication
: Carbon resistor
OMR
are
: Oxide metal film resistor
UNFR
: Unflammable resistor
MFR
: Metal film: resistor
FR
: Fusible resistor
*Composition
resistor 4/2
{W] is indicated
as
1/258 or
Comp.
Capacitor
©
Capacitance
Above 1: [pF]
Below
1:
[uF]
©
Withstand Voltage
Without madigsuon
: DC 50 [V]
* Others
_: DC*withstand voltage {VJ
AC indicated
"+ AC withstand voltage [V] ~
©
Indications for electrolytic Rapechets:: are as COONS:
(Example)
47/50 —~ capeciane un / withstand te
we
°o
Type
;
Without indication
: 'Cetamie capacitor
MY
: Mylar capacitor
—
MM
_:
Metalized mylat capacitor
PP
~
" +
""Polypropyléne capacitor '~
MPP
,
_ .
1. Metalized polypropylene capacitor
NP
: Nonpolar electrolytic Capacitor
BP
;
: Bipolar electrolytic capacitor
TAN.
: Tantalum capacitor
JVC
VICTOR
COMPANY
OF JAPAN,
Ltd.
\
- -The difference of the GND
is shown by the LIVE { pri-
~ AV-2750S
®
INBPY (a0
SCHEMATIC DIAGRAM
Col
|
Without unit
> [wH]
Power Supply
:B1(130V)
mcm
19)
'witeeient "Bola Vv)
weeom
:5V
: TT
«Each voltage reading specified.
Connection method
{—_]: Connector
>
+h-: Receptacle
°C:
Wrapping or soldering
Test point
& GND. symbol.
@ : Test point by miniature GT pin
Q : Only test point display
a. : Live (Primary) side ground
my:
Neutral (Secondary) side ground
= DECODING
CHIP PARTS CONSTANT TERMS
< CHIP METAL GLAZE RESISTOR >
EE
[7 Multiplier
TS
Cansant term
;
12 x 10° = 12000 {Q] = 12 [kQ] (Resistance)
< CHIP CERAMIC CAPACITOR >
K, M,Z,
P...
Tolerance of ordinary type
| N
<x | | C, PR, asic is Temperature coefficient of
-S, 7, U
temperature compensation
type
co
Multiplier
Constant term
-NOTE FOR SERVICE
This model's power circuit is partly different in the GND.
mary: =k.) side GND
and the NEUTRAL
(secondary: _ | .
zr) side GND.
.
"Don't. short between the LIVE side GND
and NEU- -
TRAL: side GND
or never
measure
with
a measuring
apparatus
(oscilloscope
etc.) the LIVE
side GND
and
NEUTRAL side GND at the same time.
If above note will not be kept, a fuse or any parts will be
broken.
:
9004 VP
gD)
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