Read Sony CHC-P11 / CHC-P11J / HCD-H11 / HCD-H11J Service Manual online
– 13 –
TUNER SECTION
Precautions in Repairing
Note. 1 :
The adjustment should be performed in the publication.
(MW
n FM n SW)
Note. 2 :
As a front-end (FE1) is difficult to repair if faulty, replace it
with new one.
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Abbreviation
AUS : Australian
IT
: Italian
G
: German
AR
: Argentine
EA
: Saudi Arabia
HK
: Hong Kong
MX
: Mexican.
SP
: Singapore
MY
: Malaysia
TW
: Taiwan
EE
: East European
E2
: Tuner sections SW BAND do not exist.
E3
: Tuner sections SW BAND exist.
MW Tuned Indication Lighting Level
Setting :
Band : MW
Setting :
Band : MW
set
AM RF signal
generator
generator
loop antenna A
loop antenna B
Carrier frequency : 999kHz (at 9kHz step) or
1,050kHz (at 10kHz step)
Modulation
: 400Hz 30% modulation
Procedure :
1. Set loop antenna A so that the loop antenna B input level becomes
1. Set loop antenna A so that the loop antenna B input level becomes
55dB
µ
/m (0.6mV/m)
2. Tune the set to 999kHz (at 9kHz step) or 1,050kHz (at 10kHz
step).
3. Adjust RV41 so that the TUNED indicatior goes on.
Adjustment Location : TCB board (see page 14)
FM Tuned Indication Lighting Level
Note :
Always make the tuning level adjustment first.
(Since it affects the FM tuning level.)
Setting :
Band : FW
Band : FW
FM RF stereo signal
generator
generator
75
Ω
coaxial
FM ANTENNA terminal
set
Carrier frequency : 98MHz
Modulation
Modulation
: 1kHz, 75kHz (100%)
Output level
: 0.018mV (25dB )
µ
Procedure :
1. Tune the set to 98MHz.
2. Adjust RV42 so that the TUNED indicator goes on.
1. Tune the set to 98MHz.
2. Adjust RV42 so that the TUNED indicator goes on.
Adjustment Location : TCB board (see page 14)
SW Control Voltage Adjustment
(Frequency Coverge Adjustment)
(E3,EA,MY,SP,HK,TW model)
Setting :
(Frequency Coverge Adjustment)
(E3,EA,MY,SP,HK,TW model)
Setting :
Band : SW
Procedure :
1. Connect digital Voltmeter to diode D1 center lead and ground.
2. Adjust for a following value reading on digital Voltmeter.
1. Connect digital Voltmeter to diode D1 center lead and ground.
2. Adjust for a following value reading on digital Voltmeter.
Set frequency
Adjustment
part
Reading on digital
voltmeter
SW
5.95MHz
T2
1.2Vdc
17.9MHz
CV2
8.5Vdc
Adjustment Location : TCB board (see page 14)
SW Tracking Adjustment
(E3,EA,MY,SP,HK,TW model)
Setting :
(E3,EA,MY,SP,HK,TW model)
Setting :
Band : SW
+
–
AM RF signal
generator
generator
AM ANTENNA terminal
SPEAKER terminal
Modulation : 400Hz
30% modulation
set
Level meter
Procedure :
Adjust for maximum reading on Level mater.
Adjust for maximum reading on Level mater.
Set frequency
Adjustment
part
SW
7MHz
T1
17MHz
CV1
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Repeat the procedures is each adjustment several times, and the
frequency coverage and tracking adjustment should be finally done
by the trimmer capacitors.
by the trimmer capacitors.
Adjustment Location : TCB board (see page 14)
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