Sony CFD-E10 Service Manual ▷ View online
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
12
CFD-E10
4-1. IC Pin Function Description
• IC801 BU24591-7B System Control (CD Board)
Pin No.
1 to 5
6 to 12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56 to 58
59
60
61 to 64
Pin Name
SEG00 to SEG04
SEG05 to SEG11
FOK CON
SEG13
SEG14
XRESET
NC
NC
GSW
AMUTE
ZSENS
YMDATA
YMCLK
NC
MOTOR MUTE
GFS TM
TEST
DEF MODE
ADJSEL
YMLD
XRESET
SLED
SENSE
BUSY
2SPD
MMUTE
ESP
RW
SUB-Q
COMMAND
MCK
SUBSYQ
LID
INNER
HOLD
PLAY/PAUSE
RESET
GND
OSC1
OSC2
VDD
GFS
FOK
T UP
F UP
NC
KEY0
TEST
COM0 to COM3
I/O
O
O
O
O
O
O
O
O
O
O
I
O
O
—
O
I
I
I
I
O
O
I
I
I
O
O
—
O
I
O
O
I
I
I
I
I
I
—
I
O
—
I
I
I
I
I
I
I
O
Description
Segment drive signal output to the liquid crystal display
Segment drive signal output to the liquid crystal display Not used (open)
FOK control signal output (for all discs)
FOK control signal output (for CD-RW disc) Not used (open)
Motor/coil driver muting signal output Not used (open)
Reset signal output to the DSP (IC703) and RAM CONT (IC704)
Not used (open)
Not used (open)
Gain control signal output to the RF amplifier (IC701) and the switches for CD-RW disc
Audio muting control signal output “H” : muting on
ZSENS signal input from the RAM CONT (IC704)
Data output to the RAM CONT (IC704)
Clock output to the RAM CONT (IC704)
Not used (open)
Motor/coil driver muting signal output “H” : muting on
GFS detect time setting terminal “H” : 300ms, “L” : 30ms
Test key terminal
Focus servo mode signal input at defect “Open “ : gain down, “Ground” : hold
Automatic adjustment setting terminal “Open” : automatic adjustment on, “Ground” : automatic adjustment off
YMLD signal output to the RAM CONT (IC704)
Reset signal output to the RAM CONT (IC704)
Sled mode setting terminal “H” : normal mode, “L” : intermittent mode (fixed at “H”)
SENSE signal input from the DSP (IC703)
BUSYsignal input from the DSP (IC703)
Normal/double speed selection signal output “L” : double speed
Motor/coil driver muting signal output “H” : muting on
Not used (open)
Data send/receive control signal output to the DSP “H” : receive data from the DSP, “L” : send data to the DSP
SUB-Q signal input from the DSP (IC703)
COMMAND signal output to the DSP (IC703)
Bit clock for SUB-Q and COMMAND output to the DSP (IC703)
Sub-code sync signal input from the DSP (IC703)
CD lid open/close detection switch signal input “H” : open
Mechanism inner limit switch signal input “L” : on
Hold switch signal input
Key input from the S801 (u ) “L” : on
CPU reset signal input “L” : reset
Ground
CPU clock input (4.23MHz)
CPU clock output Not used (open)
Power supply
GFS signal input from the DSP (IC703)
Focus OK signal input from the RF amplifier (IC701)
Tracking gain up setting terminal “H” : normal, “L” : gain up (fixed at “H”)
Focus gain up setting terminal “H” : normal, “L” : gain up (fixed at “H”)
Not used (fixed at “H”)
Key input from the S802 to S805 (x, PLAY MODE, >, .)
IC test terminal Not used (open)
Common drive signal output to the liquid crystal display
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