Sony MDS-JE440 Service Manual ▷ View online
29
5-14. ERROR RATE CHECK
5-14-1. CD Error Rate Check
Checking Procedure :
1. Load a check disc (MD) TDYS-1.
2. Rotate the AMS knob and display “CPLAY1 MODE”.
3. Press the YES button twice and display “CPLAY1 MID”.
4. The display changes to “C1 =
1. Load a check disc (MD) TDYS-1.
2. Rotate the AMS knob and display “CPLAY1 MODE”.
3. Press the YES button twice and display “CPLAY1 MID”.
4. The display changes to “C1 =
AD =
”.
5. Check that the C1 error rate is below 20.
6. Press the MENU/NO button, stop playback, press the A but-
6. Press the MENU/NO button, stop playback, press the A but-
ton, and remove the test disc.
5-14-2. MO Error Rate Check
Checking Procedure :
1. Load a continuously recorded test disc (MDW-74/GA-1).
1. Load a continuously recorded test disc (MDW-74/GA-1).
(Refer to “5-5. Using the Continuously Recorded Disc”.)
2. Rotate the AMS knob and display “CPLAY1 MODE”.
3. Press the YES button and display “CPLAY1 MID”.
4. The display changes to “C1 =
3. Press the YES button and display “CPLAY1 MID”.
4. The display changes to “C1 =
AD =
”.
5. If the C1 error rate is below 20, check that ADER is 00.
6. Press the MENU/NO button, stop playback, press the A but-
6. Press the MENU/NO button, stop playback, press the A but-
ton, and remove the test disc.
5-15. FOCUS BIAS CHECK
Change the focus bias and check the focus tolerance amount.
Checking Procedure :
1. Load a continuously recorded test disc (MDW-74/GA-1).
Checking Procedure :
1. Load a continuously recorded test disc (MDW-74/GA-1).
(Refer to “5-5. Using the Continuously Recorded Disc”.)
2. Rotate the AMS knob and display “CPLAY1 MODE”.
3. Press the YES button twice and display “CPLAY1 MID”.
4. Press the MENU/NO button when “C1 =
3. Press the YES button twice and display “CPLAY1 MID”.
4. Press the MENU/NO button when “C1 =
AD =
” is
displayed.
5. Rotate the AMS knob and display “FBIAS CHECK”.
6. Press the YES button and display “
6. Press the YES button and display “
/
c =
”.
The first four digits indicate the C1 error rate, the two digits
after [/] indicate ADR, and the 2 digits after [c =] indicate the
focus bias value.
Check that the C1 error is below 20 and ADER is below 2.
after [/] indicate ADR, and the 2 digits after [c =] indicate the
focus bias value.
Check that the C1 error is below 20 and ADER is below 2.
7. Press the YES button and display “
/
b =
”.
Check that the C1 error is below 100 and ADER is below 2.
8. Press the YES button and display “
/
a =
”.
Check that the C1 error is below 100 and ADER is below 2
9. Press the MENU/NO button, next press the A button, and
remove the continuously recorded disc.
Note 1 : If the C1 error and ADER are above other than the speci-
fied value at points a (step 8. in the above) or b (step 7. in
the above), the focus bias adjustment may not have been
carried out properly. Adjust perform the beginning again.
the above), the focus bias adjustment may not have been
carried out properly. Adjust perform the beginning again.
5-16. AUTO GAIN CONTROL OUTPUT LEVEL
ADJUSTMENT
Be sure to perform this adjustment when the Optical pick-up is re-
placed.
If the adjustment results becomes “Adjust NG!”, the Optical pick-
up may be faulty or the servo system circuits may be abnormal.
placed.
If the adjustment results becomes “Adjust NG!”, the Optical pick-
up may be faulty or the servo system circuits may be abnormal.
5-16-1. CD Auto Gain Control Output Level Adjustment
Adjusting Procedure :
1. Insert the check disc (MD) TDYS-1.
2. Rotate the AMS knob to display “AG Set (CD)”.
3. When the YES button is pressed, the adjustment will be
1. Insert the check disc (MD) TDYS-1.
2. Rotate the AMS knob to display “AG Set (CD)”.
3. When the YES button is pressed, the adjustment will be
performed automatically.
“Complete!!” will then be displayed momentarily when the value
is recorded in the non-volatile memory, after which the display
changes to “AG Set (CD)”.
“Complete!!” will then be displayed momentarily when the value
is recorded in the non-volatile memory, after which the display
changes to “AG Set (CD)”.
4. Press the A button to remove the disc.
5-16-2. MO Auto Gain Control Output Level Adjustment
Adjusting Procedure :
1. Insert the reference disc (MDW-74/GA-1) for recording.
2. Rotate the AMS knob to display “AG Set (MO)”.
3. When the YES button is pressed, the adjustment will be
1. Insert the reference disc (MDW-74/GA-1) for recording.
2. Rotate the AMS knob to display “AG Set (MO)”.
3. When the YES button is pressed, the adjustment will be
performed automatically.
“Complete!!” will then be displayed momentarily when the value
is recorded in the non-volatile memory, after which the display
changes to “AG Set (MO)”.
“Complete!!” will then be displayed momentarily when the value
is recorded in the non-volatile memory, after which the display
changes to “AG Set (MO)”.
4. Press the A button to remove the disc.
30
NOTE:It is useful to use the jig. for checking the waveform. (Refer
to Servicing Note on page 6.)
[BD BOARD] (SIDE B)
D101
IC151
23
1 27
1
1
7
IC101
CN101
CN103
CN102
IC195
IC190
CN105
IC102
*
NOTE
5-17. ADJUSTING POINTS AND CONNECTING POINTS
[BD BOARD] (SIDE A)
31
31
SECTION 6
DIAGRAMS
6-1. CIRCUIT BOARDS LOCATION
THIS NOTE IS COMMON FOR PRINTED WIRING
BOARDS AND SCHEMATIC DIAGRAMS.
(In addition to this, the necessary note is printed
in each block.)
BOARDS AND SCHEMATIC DIAGRAMS.
(In addition to this, the necessary note is printed
in each block.)
For schematic diagrams.
Note:
• All capacitors are in µF unless otherwise noted. pF: µµF
• All capacitors are in µF unless otherwise noted. pF: µµF
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.
•
f
: internal component.
•
2
: nonflammable resistor.
•
1
: fusible resistor.
•
C
: panel designation.
For printed wiring boards.
Note:
• X
: parts extracted from the component side.
• Y
: parts extracted from the conductor side.
•
a
: Through hole.
• b
: Pattern from the side which enables seeing.
(The other layers' patterns are not indicated.)
•
U
: B+ Line.
•
V
: B– Line.
•
H
: adjustment for repair.
• Voltages and waveforms are dc with respect to ground
under no-signal (detuned) conditions.
• Voltages are taken with a VOM (Input impedance 10 M
Ω
).
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.
• Signal path.
E
: PB
j
: REC
p
: PB (DIGITAL OUT)
l
: REC (DIGITAL IN)
• Abbreviation
CND : Canadian model
SP
SP
: Singapore model
MY
: Malaysia model
HK
: Hong Kong model
AUS
: Australian model
Caution:
Pattern face side: Parts on the pattern face side seen from the
(Side B)
Pattern face side: Parts on the pattern face side seen from the
(Side B)
pattern face are indicated.
Parts face side:
Parts on the parts face side seen from the
(Side A)
parts face are indicated.
• Indication of transistor
C
B
These are omitted.
E
Q
B
These are omitted.
C
E
B
These are omitted.
C
E
BD board
DISPLAY board
KEY-SW board
PT board
VOL-SEL board
MAIN board
(SP, MY model)
Note:
The components identi-
fied by mark
The components identi-
fied by mark
0
or dotted
line with mark
0
are criti-
cal for safety.
Replace only with part
number specified.
Replace only with part
number specified.
Note:
Les composants identifiés par
une marque
Les composants identifiés par
une marque
0
sont critiques
pour la sécurité.
Ne les remplacer que par une
piéce por tant le numéro
spécifié.
Ne les remplacer que par une
piéce por tant le numéro
spécifié.
MDS-JE440
32
32
6-2. BLOCK DIAGRAMS – BD SECTION –
F
C
B
D
A
E
I
J
J
I
B
A
C
D
E
F
DETECTOR
J
I
A
B
C
D
D
E
F
LD
PD
LASER DIODE
ILCC
PD
OPTICAL PICK-UP
(KMS-260B/J1N)
AUTOMATIC
POWER CONTROL
Q121, 122
APC
PD
APCREF
AT
AMP
B.P.F.
WBL
ADFM
ADIN
ADFG
ABCD
AMP
ABCD
FE
TE
SE
F0CNT
WBL
3T
EQ
COMMAND
SWDT
SCLK
XLAT
RFO
RF AGC
& EQ
AGCI
EQ
RF
RF AMP,
FOCUS/TRACKING ERROR AMP
IC101
TEMP
MORFO
MORFI
3T
WBL
AUX
PEAK
BOTM
FOCUS/TRACKING COIL DRIVE,
SPINDLE/SLED MOTOR DRIVE
IC141
OUT4F
OUT4R
M101
(SPINDLE)
OUT2F
OUT2R
M102
(SLED)
OUT1F
OUT1R
OUT3F
OUT3R
FCS+
FCS–
TRK+
TRK–
2-AXIS
DEVICE
(TRACKING)
(FOCUS)
IN4R
IN4F
IN2F
IN2R
IN1F
IN1R
IN3F
IN3R
MOD
SPFD
SPRD
APCREF
SFDR
SRDR
FFDR
FRDR
TFDR
TRDR
PSB
PWM GENERATOR
FROM CPU
INTERFACE
DIGITAL SERVO
SIGNAL PROCESSOR
IC151 (2/2)
RECP
AUX1
ABCD
FE
TE
SE
PEAK
BOTM
XLRF
CKRF
DTRF
XLAT
SCLK
SWDT
FILI
PCO
CLTV
FILO
EFMO
ADDT
DATAI
DIVIDER
IC171
IC151 (1/2)
TX
ASYO
ASYI
RFI
SCTX
HR901
OVER WRITE HEAD
ADFG
F0CNT
SPFD
SPRD
SAMPLING
RATE
CONVERTER
DIGITAL
AUDIO
INTERFACE
DIN0
DIGITAL SIGNAL PROCESSOR,
EFM/ACIRC ENCODER/DECODER,
SHOCK PROOF MEMORY CONTROLLER,
ATRAC ENCODER/DECODER
IC151 (1/2)
INTERNAL BUS
DADT
XBCK
LRCK
FS256
OSCI
OSCO
DQSY
SQSY
XINT
SENS
SRDT
SWDT
SCLK
XLAT
MNT0
MNT1
MNT2
MNT3
SHOCK
XBUSY
SWDT
SCLK
SWDT
SCLK
XLATCH
MNT1 (SHOCK)
MNT2 (XBUSY)
DIG-RST
SQSY
DQSY
LDON
WR-PWR
MOD
XINT
SENS
SRDT
LDIN
LDOUT
09
IN1
IN2
OUT1
OUT2
VZ
LOADING
MOTOR DRIVE
IC440
M103
(LOADING)
DQ1
–
DQ4
A0
–
A9
D0
–
D3
A00
–
A09
XOE
XWE
XRAS
XCAS
OE
WE
RAS
CAS
D-RAM
IC153
DIN1
SYSTEM CONTROLLER
IC1 (1/2)
HF MODULE
ADDT
DADT, BCK, LRCK
(Page 33)
1024FS
(Page 33)
(Page 33)
SWDT, SCLK
(Page 33)
LRCK
REFLECT
PROTECT
LD-LOW
UNREG
+5V
11
LIMIT-IN
OUT-SW
S101
(LIMIT IN)
PLAY-SW
• SIGNAL PATH
: PLAY (ANALOG OUT)
: PLAY (DIGITAL OUT)
: PLAY (DIGITAL OUT)
: REC (ANALOG IN)
: REC (DIGITAL IN)
S103
(OUT SW)
S104
(PLAY SW)
REC-P
S105
(REC POSITION)
XBCKI
LRCKI
S102
(REFLECT/PROTECT DETECT)
HIGH REFELECT RATE/
WRITE PROTECT
LOW REFELECT RATE/
UN-PROTECT
OVER WRITE
HEAD DRIVE
IC181, Q181, 182
WAVE
SHAPER
IC600 (1/2)
OPTICAL
RECEIVER
IC611
DIGITAL IN
OPT
11
9
8
4
1
2
48
47
46
40
33
38
37
36
32
35
34
26
28
18
17
16
20
12
30
29
5
6
7
10
LASER ON
SWITCH
Q101
LD/PD
AMP
I-V
AMP
I-V
AMP
FOCUS
ERROR AMP
TRACKING
ERROR AMP
RF AMP
B.P.F.
PEAK &
BOTTOM
6
8
92
91
88
89
86
85
81
80
83
13
67 65 66 75 74 63 64
82
27
25
21
23
12
10
14
15
19
18
29
30
3
4
16
M
M
M
AUTOMATIC
POWER
CONTROL
DIGITAL SERVO
SIGNAL
PROCESS
ANALOG MUX
A/D CONVERTER
SERIAL/PARALLEL
CONVERTER,
DECODER
AUTO
SEQUENCER
V-I
CONVERTER
HF MODULE
SWITCH
IC102, Q131 – 134
100
60
59
62
61
53
54
57
78
79
94 93
10
12 11
14
9
8
5 6 7
1 2 3 4
43
47
16
29
27
28
26
20
19
23
24
22
25
17
46
44
22
3
4
23
15
ADIP
DEMODULATOR/
DECODER
SPINDLE
SERVO
COMPA-
RATOR
PLL
FILTER
SUBCODE
PROCESSOR
EFM/ACIRC
ENCODER/DECODER
SHOCK PROOF
MEMORY CONTROLLER
ATRAC
ENCODER/DECODER
CPU
INTERFACE
MONITOR
CONTROL
CONTROL
25
29
47
35
14
27
32
48 40
42 50
58 56
38
XRST
CLOCK
GENERATOR
49, 48, 50, 51
1, 2, 24, 25
34
–
31, 36
–
40, 45
5, 9
–
12, 14
–
18
C
D
B
A
12 13
5
6
4
2
10
30
51
49
43
67
68
34
CLIP DATA 44
CLIP CLK 46
M
REFERENCE
VOLTAGE SWITCH
Q440, 444
LRCK1
DATA1
XBCK1
XBCK1
LRCK1
DATA1
XBCK1
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