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8-1
.
POWER BLOCK ADJUSTMENT AND
CHECK
8
-1-1.
Unregulated Power Supply Voltage Check
(
PS-181
Board)
Mode
I
Power
off
Measuring
Instrument
I
Digital
voltmeter
MT UNREG B
Measurment
Point
I
Pin @ of
CN101
Specified
Value
I
6.0
±
0.1 Vdc
MT
UNREG
A
Measurement Point
I
Pin
®
of CNlOl
Specified Value
j
6.0
±
0.1 Vdc
SV UNREG
Measurement Point
I
Pin® of
CN101
Specified Value
I
5.9 ± 0.1 Vdc
AU
UNREG
Measurement
Point
I
Pin
®
of CNlOl
Specified Value
I
5.9
±
0.1 Vdc
BL UNREG
Measurement Point
I
Pin
@
of CN102
Specified Value
j
s.8
±
0.1 Vdc
Adjusting method :
1)
Adjust
the
stabilized
power supply
output
voltage
so
that
voltage
between Pin
®
(BATT
6V)
and
Pin
<D
of CN103 becomes 6.0
± 0.05 Vdc.
2) Confirm
that
voltage
at
every
check point
meets
the
specifications.
8-1-2.
Oscillation Frequency Adjustment
(
PS-181
Board)
Mode
Stop
(power
on)
Measurement Point
Collector of Q106
Measuring Instrument Frequency counter
Adjusting Element
RVlOl
Specified Value
475
±
5
kHz
Adjusting
method
:
1)
Adjust
oscillation frequency
to 475 ±
5
kHz
with
RVlOl.
8-1-3.
Switch 5V Adjustment
(
PS-181
Board)
Mode
Stop
(power on)
Measurement Point
Pin
(!)
of CNlOl
Measuring
Instrument
Digital voltmeter
Adjusting Element
RV102
Specified Value
4.95
±
0.05 V de
Adjusting
method :
1)
Adjust
to 4.95
±
0.05 Vdc
with
RV102.
8-1-4.
-
SV Adjustment
(
PS-181
Board)
Mode
Stop
(power
on)
Measurement
Point
Pin
®
of CN102
Measuring Instrument
Digital
voltmeter
Adjusting
Element
RV103
Specified Value
-
8.3
±
0.1
Vdc
Adjusting method
:
1)
Adjust
to
- 8.3 ±
0.1
Vdc
with
RV103.
8-1-5.
TV Power Voltage Check (PS-181
Board)
Mode
I
Stop
(power on)
Measuring
Instrument
I
Digital
voltmeter
-
-
TV
5V
Measunnent
Point
I
Pin
@
of CN102
Specified Value
I
4.95
±
0.05 Vdc
+
13V
Measurement
Point
I
Pin®
of
CN102
Specified
Value
j
13.0
±
0.5 Vdc
-
20V
Measurement
Point
I
Pin@
of CN102
Specified
Value
I
-
20.0
±
0.5 Vdc
+
30
Vdc
Measurement
Point
I
Pin
@ of CN102
Specified Value
I
33.0
±
2.0 Vdc
Checking
method
:
1)
Confirm
that
voltage a
t
every
check
point meets
the specifications.
-
151
-
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