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NIGV-41E
SECTION
7
ELECTRICAL ADJUSTMENTS
7-2. POWER
SOURCE
PART CHECKING
(RG-24 board)
See the adjusting parts location diagram from on
page
30 for the adjustment.
7-1, PREPARATION
FOR ADJUSTMENT
The following measurement
instruments
are used for the
electric adjustment.
7-1-1.
Using Instruments
1)
Oscilloscope having two phenomena, band of 10MHz or
more, and the delay mode.
2)
Frequency counter
3)
Pattern generator (having the video output terminal)
4)
Digital voltmeter
5)
Stabilized power source
6)
COMMON voltage adjustment jig (J-6082-024-A)
7)
Video casstte recorder (GV-U5E)
7-1-2.Connection of Instruments
+ Video cassette recorder switch position
LINE
IN/OUT
switch
: IN
VIDEO IN/OUT terminal
A/V iN terminal
(12P)
A/V QUT terminal (12P)
Video cassette
recorder
GV-U5E
DC IN terminal
or BATTERY
terminal
Fig. 7-1
Measuring
instrument
REG
+5V
Measurement
point
POWER ON
Digital voltmeter
check
CN002 Pin @
REG
+13V
check
Meaurement
point
Specified
value
REG
—-8V
Measurement
point
Specified
value
REG
—-20V
Measurement
point
Specified
value
UN
REG
+
Measurement
point
CN002 Pin ©
13. 040, 2Vde
check
CN002
Pin @
—8.0+0. 1Vde
check
CN002 Pin ®
— 2040. 1Vde
6V_
check
CN00L Pin ©
Specified
value
EVER
+5V
Measurement
point
Specified
value
6.00. 5Vde
5. 0O+0.1Vde
{Checking method]
1)
Each specified value should be satisfied.
CN002
Pin @ (GND CNOOl Pin @)
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