Read Sony CMT-E301 / HCD-E301 Service Manual online
12
HCD-E301
Adjustment Location and Connecting Points
– MAIN BOARD (Component Side) –
L104 FM Frequency
Coverage Adjustment
Coverage Adjustment
T102
AM Frequency Coverage Adjustment
TC102
}
AM Tracking
L110
Adjustment
L103
FM Tracking
TC101
}
Adjustment
– MAIN BOARD (Conductor Side) –
TP10
(FM VT)
TP11
(AM VT)
IC101
AM FREQUENCY COVERAGE ADJUSTMENT
Adjustment Part
Frequency Display
Reading on Digital Voltmeter
Confirmation
531 kHz
1.5
±
0.2 V
T102
1,602 kHz
7.3
±
0.3 V
AM TRACKING ADJUSTMENT
Adjust for a maximum reading on level meter
L110
603 kHz
TC102
1,404 kHz
FM FREQUENCY COVERAGE ADJUSTMENT
Adjustment Part
Frequency Display
Reading on Digital Voltmeter
L104
87.6 MHz
2.1
±
0.2 V
Confirmation
108 MHz
7.0
±
0.4 V
FM TRACKING ADJUSTMENT
Adjust for a maximum reading on level meter
L103
89.9 MHz
TC101
105.9 MHz
TUNER SECTION
0 dB=1
µ
V
[AM]
Setting:
Function
Function
: TUNER
Band switch : AM
[FM]
Setting:
Function
Function
: TUNER
Band switch : FM
• Repeat the procedures in each adjustment several times, and the
frequency coverage and tracking adjustments should be finally
done by the trimmer capacitors.
done by the trimmer capacitors.
AM RF signal
generator
30% amplitude
modulation by
400 Hz signal
Output level: as low as possible
modulation by
400 Hz signal
Output level: as low as possible
Put the lead-wire
antenna close to
the set.
antenna close to
the set.
+
–
–
level meter
set
32
Ω
HEADPHONE board
PHONES jack (JK401)
PHONES jack (JK401)
FM RF signal
generator
22.5 kHz frequency
deviation by 400 Hz
signal
Output level: as low as possible
deviation by 400 Hz
signal
Output level: as low as possible
+
–
–
level meter
set
32
Ω
0.01
µ
F
MAIN board
FM ANT
FM ANT
HEADPHONE board
PHONES jack (JK401)
PHONES jack (JK401)
digital voltmeter
100 k
Ω
MAIN board
TP10 (FM VT)
TP11 (AM VT)
TP11 (AM VT)
Click on the first or last page to see other CMT-E301 / HCD-E301 service manuals if exist.