Sony ZSS2IPW - Electrical Adjustments; Tuner Section Adjustments

15
ZS-S2iP
TUNER SECTION 0 dB = 1 µV
• AM Section
Setting:
RADIO BAND•AUTO PRESET button: AM
• FM Section
Setting:
RADIO BAND•AUTO PRESET button: FM
• Connecting Level Meter (FM, AM)
• Connecting Digital Voltmeter (FM, AM)
•Repeat the procedures in each adjustment several times, and the
frequency coverage and tracking adjustments should be finally
done by the trimmer capacitors.
Put the lead-wire
antenna close to
the set.
AM RF signal
generator
30% amplitude
modulation by
400 Hz signal
ANT2
FM RF signal
generator
75 kHz frequency
deviation by 1 kHz signal
output level : as low as possible
0.01
µ F
set
i jack (J321)
set
32
Ω
level meter
(range: 0.5–5 V ac
)
digital
voltmeter
100 k
Ω
TP (VT)
AM IF ADJUSTMENT
Adjust for a maximum reading on level meter.
T1
450 kHz
AM FREQUENCY COVERAGE CHECK
Frequency Display 530 kHz 1,710 kHz
Reading on Digital voltmeter 0.8 ± 0.3 V 5.8 ± 0.1 V
Adjustment Part L3 <confirmation>
AM TRACKING ADJUSTMENT
Adjust for a maximum reading on level meter.
ANT1 CT3
620 kHz 1,400 kHz
FM IF ADJUSTMENT
Adjust for a maximum reading on level meter.
L6
10.7 MHz
FM FREQUENCY COVERAGE ADJUSTMENT
Frequency Display 87.5 MHz 108 MHz
Reading on Digital voltmeter 1.5 ± 0.3 V 3.0 ± 0.2 V
Adjustment Part <confirmation> L2
FM TRACKING ADJUSTMENT
Adjust for a maximum reading on level meter.
L1 CT1
87.5 MHz 108 MHz
Adjustment Location: See page 16.
SECTION 4
ELECTRICAL ADJUSTMENTS