Sony CFD-E10 Service Manual ▷ View online
8
CFD-E10
2-8. Optical Pick-up (KSS-900A)
1
screw
+
P 1.7x2
6
KSS-900A
2
holder
3
GEAR (B)
5
4
MD chassis
9
CFD-E10
SECTION 3
ELECTRICAL ADJUSTMENTS
TUNER SECTION
AM Section
Function switch
Function switch
: AM
MEGA BASS
: OFF
FM Section
Function switch
Function switch
: FM
MEGA BASS
: OFF
Connection:
AM RF signal generator
3% amplitude modulation by 400Hz signal.
Output level : as low as possible
Output level : as low as possible
Put the lead-wire antenna
close to the set.
close to the set.
FM RF signal generator
75kHz frequency deviation (100%) by 1kHz signal.
Output level : as low as possible
Output level : as low as possible
telescopic
antenna
antenna
0.01
µ
F
J301 (
i
jack)
set
32
Ω
level meter
• 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.
no mark : Other models
< >
< >
: US, Tourist models
AM FREQUENCY COVERAGE ADJUSTMENT
Adjust for a maximum reading on level meter.
L4
518
± 5kHz
CV1 (4/4) trimmer
1680
± 30kHz <1780 ± 30kHz>
AM TRACKING ADJUSTMENT
Adjust for a maximum reading on level meter.
L3
620kHz
CV1 (3/4) trimmer
1400kHz
FM FREQUENCY COVERAGE ADJUSTMENT
Adjust for a maximum reading on level meter.
L2
87
± 0.5kHz <85.5 ± 0.5MHz>
CV1 (2/4) trimmer
107.8
± 0.5MHz <109.5 ± 0.5MHz>
FM TRACKING ADJUSTMENT
Adjust for a maximum reading on level meter.
L1
87MHz <86.5MHz>
CV1 (1/4) trimmer
107.8MHz <109.5MHz>
Adjustment Locations:
[TU BOARD]
[TU BOARD]
FM FREQUENCY COVERAGE
ADJUSTMENT
FM FREQUENCY COVERAGE
ADJUSTMENT
L2
IC1
FM TRACKING
ADJUSTMENT
FM TRACKING
ADJUSTMENT
L1
L3
AM TRACKING ADJUSTMENT
AM TRACKING ADJUSTMENT
L4
AM OSC
CV1(4/4)TRIMMER
AM FREQUENCY
COVERAGE
ADJUSTMENT
FM RF
CV1 (1/4) TRIMMER
FM OSC
CV1(2/4)TRIMMER
AM RF
CV1(3/4) TRIMMER
Ver 1.1 2002.09
10
CFD-E10
CD SECTION
Note:
1. CD Block is basically designed to operate without adjustment.
There-fore, check each item in order given.
2. Use YEDS-18 disc (3-702-101-01) unless otherwise indicated.
Use a disc copied from YEDS-18 for CD-RW test.
3. Use an oscilloscope with more than 10M
Ω impedance.
4. Clean the object lens by an applicator with neutral detergent
when the signal level is low than specified value with the
following checks.
following checks.
OP FE Offset Adjustment
Procedure:
1.
1.
Connect a digital multimeter to test point TP704 (FE,Y F X)
and TP703 (VREF) with DC range.
and TP703 (VREF) with DC range.
2.
Turn on the power, while pressing two buttons u and
PLAY MODE simultaneously. “
PLAY MODE simultaneously. “
88” is displayed.
3.
Press the x button,then press the PLAY MODE button.
Adjust the RV701 after the message “
Adjust the RV701 after the message “
82” is displayed.
4.
Press the PLAY MODE twice. Adjust the RV702 after the
message “
82” is displayed and “REP” blinks.
FE Specified value: VREF
± 20mV
REP
VREF
20mV
20mV
OP TE Offset Adjustment
Procedure:
1.
1.
Connect a digital multimeter to test point TP705 (TE,Y T X)
and TP703 (REF) with DC range.
and TP703 (REF) with DC range.
2.
Put the disc (YEDS-18) in.
3.
Press the u button.
4.
Adjust the RV703 after TOC reading.
TE Specified value: VREF – (100
± 20mV)
RF Waveform Check
Procedure:
1.
1.
Connect an oscilloscope to test point TP702 (RF) and TP703
(VREF) on the CD board.
(VREF) on the CD board.
2.
Put the Disc (YEDS-18 or copied from YEDS-18) in.
3.
Press the u button.
4.
Confirm that oscilloscope waveform is clear.
Note:
A clear RF signal waveform means that the shape “
◊” can be clearly
distinguished at the center of the waveform.
• RF signal waveform
VREF
TE
100
±
20mV
Level : 0.7~1.3Vp-p
VOLT/DIV : 200mV
TIME/DIV : 500 ns
TIME/DIV : 500 ns
IC701
IC702
IC801
IC703
TP702
(RF)
TP705 (TE)
(Y T X)
TP703
(VREF)
TP704 (FE)
(Y F X)
OP FE Offset
Adjustment
OP TE Offset Adjustment
RV702
RV701
RV703
Connection and Adjustment Locations:
[CD BOARD]
[CD BOARD]
11
CFD-E10
SECTION 4
DIAGRAMS
Note on Schematic Diagram:
• All capacitors are in µF unless otherwise noted. p: pF.
50 WV or less are not indicated except for electrolytics
and tantalums.
and tantalums.
• All resistors are in Ω and
1
/
4
W or less unless otherwise
specified.
• C : panel designation.
• A : B+ Line.
• H : adjustment for repair.
• Total current is measured with no cassette installed.
• Power voltage is dc 6 V and fed with regulated dc power
• Total current is measured with no cassette installed.
• Power voltage is dc 6 V and fed with regulated dc power
supply from battery terminal.
• Voltages and waveforms are dc with respect to ground
under no-signal (detuned) conditions.
• Voltages are taken with a VOM (Input impedance 10 MΩ).
Voltage variations may be noted due to normal produc-
tion tolerances.
tion tolerances.
• Waveforms are taken with a oscilloscope.
Voltage variations may be noted due to normal produc-
tion tolerances.
tion tolerances.
• Circled numbers refer to waveforms.
• Signal path.
F
: FM
f
: AM
J
: CD
• Abbreviation
JE
: Tourist model.
• Waveforms (CD Play)
Note on Printed Wiring Boards:
• X : parts extracted from the component side.
• Y : parts extracted from the conductor side.
• Y : parts extracted from the conductor side.
•
: Pattern from the side which enables seeing.
(The other layers' patterns are not indicated.)
• Indication of transistor
Note:
The components identified by mark 0 or dotted line
with mark 0 are critical for safety.
Replace only with part number specified.
with mark 0 are critical for safety.
Replace only with part number specified.
Q
C
These are omitted
E
B
C
These are omitted
E
B
59ns
4.2Vp-p
1.1 Vp-p
236ns
3.5Vp-p
8.8 Vp-p
12
µ
s
1
IC701
3
(RFO)
200mV/DIV, 1
µ
s/DIV
2
IC703
ua
(XOUT)
1V/DIV, 40ns/DIV
3
IC801
rl
(OSC1)
1V/DIV, 100ns/DIV
4
Q703 collector
5V/DIV, 4
µ
s/DIV
Ver. 1.5
Click on the first or last page to see other CFD-E10 service manuals if exist.