Read Sony ZS-RS09CP Service Manual online
ZS-RS09CP
10
SECTION 3
ELECTRICAL ADJUSTMENTS
• AM Section
Setting:
RADIO BAND•AUTO PRESET button: AM
Setting:
RADIO BAND•AUTO PRESET button: AM
Put the lead-wire
antenna close to
the set.
antenna close to
the set.
AM RF signal
generator
generator
30% amplitude
modulation by
400 Hz signal
modulation by
400 Hz signal
• FM Section
Setting:
RADIO BAND•AUTO PRESET button: FM
Setting:
RADIO BAND•AUTO PRESET button: FM
CN1
FM RF signal
generator
generator
75 kHz frequency
deviation by 1 kHz signal
output level : as low as possible
deviation by 1 kHz signal
output level : as low as possible
0.01
PF
set
• Connecting Level Meter (FM, AM)
i jack (J301)
set
32
:
level meter
(range: 0.5–5 V ac)
(range: 0.5–5 V ac)
AM FREQUENCY COVERAGE CHECK (E92, MX)
Frequency Display
530 kHz
1,710 kHz
Adjustment Part
<confi rmation>
AM FREQUENCY COVERAGE CHECK (EXCEPT E92, MX)
Frequency Display
Frequency Display
531 kHz
1,602 kHz
Adjustment Part
<confi rmation>
FM FREQUENCY COVERAGE CHECK
Frequency Display
87.5 MHz
108 MHz
Adjustment Part
<confi rmation>
• Abbreviation
E92
E92
: 120V AC area in E model
MX
: Mexican model
TUNER SECTION
0 dB = 1
μV
CD section adjustments are done automatically in this set.
In case of operation check, confi rm that focus bias.
In case of operation check, confi rm that focus bias.
FOCUS BIAS CHECK
1. Connect the oscilloscope between IC701 pin 2 and pin qa or
1. Connect the oscilloscope between IC701 pin 2 and pin qa or
RF OUT and VC.
2. Insert the disc (PATD-012 (Tr 15)). (Part No. : 4-225-203-01)
3. Press
3. Press
the
N
X
(CD) button.
4. Confi rm that the oscilloscope waveform is as shown in the fi g-
ure below. (eye pattern)
A good eye pattern means that the diamond shape (◊) in the
center of the waveform can be clearly distinguished.
center of the waveform can be clearly distinguished.
• RF signal reference waveform (eye pattern)
RF level :
1.5 ± 0.2 Vp-p
1.5 ± 0.2 Vp-p
VOLT/DIV : 50 mV (10 : 1 probe in use)
TIME/DIV : 500 nS
TIME/DIV : 500 nS
When observing the eye pattern, set the oscilloscope for AC range
and raise vertical sensitivity.
and raise vertical sensitivity.
Test Point:
– CD BOARD (Side B) –
– CD BOARD (Side B) –
CD SECTION
R533
C710
C709
R723
C764
C708
C703
C702
C721
C722
R701
R733
R736
C728
C724
C729
R732
C759
C754
X701
CN701
1
16
1
1
20
21
40
41
80
81
100
3
C701
C712
C711
C704
C716
C719
C725
C726
C726
R724
R728
C715
R721
R717
R719
C714
Q701
R534
IC701
1-883-771-
11
(11)
TE
FE
VC
RF OUT
RF OUT
VC
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