JVC TK-1280E - Page 49

STANDARD CIRCUIT
BOARDS
mw NOTE ON USING CIRCUIT DIAGRAMS
1.SAFETY
The components identified by the Z\symbot 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)Camera head
elllumination :Hlumination condition during standard
adjustment
© Object JVC Gray scale pattern (y = 2.2, 11steps)
tris :Set the VIDEO OUT wave form level! to
714MVpp.we (AGC OFF) with IRIS switch (at
the lens side)
@ Switch ‘AGC = OFF
SHUTTER = NORM
WHITE BALANCE = @(AUTO)
(2)Voltage values
(3)Wavetorm
:All DC voltage values
:Usually a probe of 10:1 is used
3.INDICATION OF PARTS SYMBOL[EXAMPLE]
@in the PW board:CAS-1502A
R1001—R?1 or RO1
C1023-C23
@Module PW board:CAS-A502A
ICA001-1C1
QA023Q23
4.COLOR OF P.C.BOARD PATTEN
TK-1280E/-1180E/-1281EG
DIAGRAMS AND
5.INDICATIONS ON THE CIRCUIT DIAGRAM
{1)Resistors
Resistance value
No unit {Q]
K {KQ]
M {MQ}
Rated allowable power
No indication :1/10[W]
Others :As specified
eType
No indication :Carbon resistor or Chip resistor
OMR :Oxide metal film resistor
FR :Fusible resistor
(2)Capacitors
Capacitance value
tor higher :[pF]
fess than 1 ‘[pF]
eWithstand voltage
No indication :DCS50[V]
Others :DC withstand voltage[V]
AC indicated :AC withstand voltage[V]
eElectrolytic Capacitors
47/50{Example]:Capacitance value[pF)/withstand voltage[V]
eType
No indication :Ceramic capacitor
MY :Mylar capacitor
PP :Polypropylene capacitor
TF :Thin film capacitor
BP ‘Bipolar electrolytic capacitor
TAN ‘Tantalum capacitor
(3)Coits
No unit :[pH)
Others :As specified
(4)Power Supply
mm 7+ 15V ——s - 1)
ESR + 12V nen | OV
JSmClmc +9.5V omens ACL
wow + 85) wenn + 1/7 V
Cercle. :+7V
onorirm :+5V
monoin -:9V
(5)Test Point
© Since the circuit diagram is a standard one, the
circuit and circuit constants may be subject to
change for improvement without any notice.
(No.6647) 23