Sony PMC-107, Руководство по обслуживанию

Страница: 14 / 51

– 14 –
phones jack
set
32
Ω
level meter
(range: 0.5–5 V ac)
digital
voltmeter
100 k Ω
TP (VT)
Put the lead-wire
antenna close to
the supplied MW/LW
loop antenna.
AM RF signal
generator
TP (FM ANT)
FM RF signal
generator
0.01
µ
F
set
FM FREQUENCY COVERAGE
ADJUSTMENT
Frequency Display 87.6 MHz 108 MHz
Reading on Digital voltmeter 1.8
±
0.2 V 5.6
±
0.2V
Adjustment Part L6 <confirmation>
FM TRACKING ADJUSTMENT
Adjust for a maximum reading on level meter.
L5 CT1
87.6 MHz 108 MHz
AM FREQUENCY COVERAGE
ADJUSTMENT
Frequency Display
530 kHz 1,710 kHz
(531 kHz) (1,611 kHz)
Reading on Digital voltmeter 0.9
±
0.2 V
6.5
±
0.2V
(5.6
±
0.2V)
Adjustment Part L2 CT2
AM TRACKING ADJUSTMENT
Adjust for a maximum reading on level meter.
L9 CT4
620 kHz (621 kHz) 1,400 kHz (1,404 kHz)
( ) : Australian model.
Adjustment Location: See page 15.
TUNER SECTION 0 dB = 1
µ
V
• FM Section
Setting:
BAND switch: FM
22.5 kHz frequency
deviation by 400 Hz signal
output level : as low as possible
• AM Section
Setting:
BAND switch: AM
30% amplitude
modulation by
400 Hz signal
• Connecting Level Meter (FM and AM)
• Connecting Digital Voltmeter (FM and AM)
• Repeat the procedures in each adjustment several times, and the
frequency coverage and tracking adjustments should be finally
done by the trimmer capacitors.