Sony HCD-CPX11 Service Manual ▷ View online
25
HCD-CPX11
CD SECTION
Note:
1. CD Block is basically constructed to operate without
adjustment.
2. Use YEDS-18 disc (3-702-101-01) unless otherwise indicated.
3. Use an oscilloscope with more than 10 M
3. Use an oscilloscope with more than 10 M
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.
5. Check the focus bias check when optical pick -up block is
replaced.
FOCUS BIAS CHECK
Procedure :
1. Connect oscilloscope to TP (RFAC) and TP (VC) on the
BD81A board.
2. Press the ?/1 button to turn the power ON, and press the Z
(CD) button to open the CD disc tray.
3. Set disc (YEDS-18) on the tray and press the
CD
NX button
to playback.
4. Confirm that oscilloscope waveform is as shown in the figure
below. (eye pattern)
A good eye pattern means that the diamond shape (
A good eye pattern means that the diamond shape (
◊
) in the
center of the waveform can be clearly distinguished.
Checking Location:
IC251
IC101
IC301
TP
(RFAC)
TP
(VC)
– BD81A BOARD (Side B) –
+
–
–
BD81A board
TP (RFAC)
TP (VC)
TP (VC)
oscilloscope
(DC range)
VOLT/DIV: 200 mV
TIME/DIV: 500 ns
TIME/DIV: 500 ns
level:
0.9
0.9
±
0.4 Vp-p
26
HCD-CPX11
MEMO
27
27
HCD-CPX11
SECTION 6
DIAGRAMS
• Circuit Boards Location
For Schematic Diagrams.
Note:
• All capacitors are in
Note:
• All capacitors are in
µ
F unless otherwise noted. (p: pF)
50 WV or less are not indicated except for electrolytics and
tantalums.
tantalums.
• All resistors are in
Ω
and
1
/
4
W or less unless otherwise
specified.
•
f
: internal component.
•
5
: fusible resistor.
•
C
: panel designation.
•
A
: B+ Line.
•
H
: adjustment for repair.
• Voltages and waveforms are dc with respect to ground un-
der no-signal (detuned) conditions.
no mark: TUNER (FM)
( ): CD PLAY
[ ] : TAPE PLAY
no mark: TUNER (FM)
( ): CD PLAY
[ ] : TAPE PLAY
〈〈 〉〉
: REC
• Voltages are taken with a VOM (Input impedance 10 M
Ω
).
Voltage variations may be noted due to normal production
tolerances.
tolerances.
• Waveforms are taken with a oscilloscope.
Voltage variations may be noted due to normal production
tolerances.
tolerances.
• Circled numbers refer to waveforms.
• Signal path.
F
: TUNER (FM/AM)
J
: CD PLAY (ANALOG)
c
: CD PLAY (DIGITAL)
E
: TAPE PLAY
a
: REC
j
: MD (VIDEO) IN
• Abbreviation
AUS
: Australian model.
KR
: Korean model.
For Printed Wiring Boards.
Note:
•
Note:
•
X
: parts extracted from the component side.
•
Y
: parts extracted from the conductor side.
•
W
: indicates side identified with part number.
•
f
: internal component.
•
: Pattern from the side which enables seeing.
(The other layers' patterns are not indicated.)
THIS NOTE IS COMMON FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS.
(In addition to this, the necessary note is printed in each block.)
(In addition to this, the necessary note is printed in each block.)
TC board
PANEL board
SUB PANEL board
S-MASTER AMP board
HP board
SUB POWER board
SP board
PRE AMP board
MAIN board
BD81A board
DRIVER board
BACK LIGHT board
SWITCHING REGULATOR
LCD board
Note: The components identified by mark
0
or dotted
line with mark
0
are critical for safety.
Replace only with part number specified.
Caution:
Pattern face side: Parts on the pattern face side seen from
(Side B) the pattern face are indicated.
Parts face side: Parts on the parts face side seen from
(Side A) the parts face are indicated.
Pattern face side: Parts on the pattern face side seen from
(Side B) the pattern face are indicated.
Parts face side: Parts on the parts face side seen from
(Side A) the parts face are indicated.
• Indication of transistor.
C
B
These are omitted.
E
Q
B
These are omitted.
C
E
Q
B
These are omitted.
C
E
Q
28
28
HCD-CPX11
6-1. BLOCK DIAGRAM — BD/DRIVER SECTION —
: CD PLAY(ANALOG)
• Signal Path
• R-ch is omitted due to same as L-ch.
: CD PLAY(DIGITAL)
OPTICAL PICK-UP
BLOCK
LD
DRIVER
Q10
R-CH
+1.7V
+3.3V
LD
GND
FOCUS
COIL
F+
F
T+
T
TRACKING
COIL
IC251
SW101
X171
16.9MHz
+3.3V
SL/SP MOTOR
DRIVER
IC101
RF AMP
16
7
15
17
18
VR
PD
19
20
21
22
5
9
3
24
MUTE
CH2OUT-F
CH1FIN
CH1RIN
CH2FIN
SFDR
OPIN+
CH2OUT-R
CH1OUT-R
CH1OUT-F
CH4OUT-F
CH4OUT-R
CH3OUT-R
CH3OUT-F
M
M
M102
(SLED)
M101
(SPINDLE)
VCC
VC
A
B
C
D
E
F
DETECTOR
A
B
E
19
F
20
LD
36
PD
37
TFDR
11
SSTP
7
FFDR
13
CH3FIN
30
MPD
6
95
XTACN
100
XRST
102
DATA
104
XLAT
105
CLOCK
86
AOUT2
81
AOUT1
71
DOUT
61
PCMD1
62
LRCK1
63
LRCK
65
PCMD
DIGITAL SIGNAL
IC301
PROCESSOR
21
40
SDO0
11
LRCKIA
16
SFSY/LRCK1B
19
SDIO
14
77 XTAO
78 XTAI
55
VDD
VDD
VDDM
26
27
C
28
D
29
107
SENS
XTACN
XRST
DATA
XLAT
CLOCK
SENS
113
GFS
114
C2PO
2
3
1
FOK
TRDR
12
10
SRDR
CH3RIN
29
CH2RIN
FRDR
14
66
BCK
60
BCK1
BCKIA
15
SBSY/BCK1B
18
6
3.3V
IC303
8
5
1
3
STANBY
36
PO11/BUCK/AD1
8
MIACK
7
MICK
6
MIDIO
4
MICS
5
MILP
2
RESET
23
2
24
25
3
7
5
22
1
21
19
32
37
36
35
33
28
27
26
34
60
115
SCOR
SCOR
REG
MUTING
Q342
OPTICAL
TRANSEIVER
IC450
MUTING CONTROL
SWITCH
Q340,341
CD DIGITAL OUT
OPTICAL
R-CH
CD L-CH
IC300(1/4)
SYSTEM CONTROLLER
MP3STB
MP3REQ
MIACK
MIACK
MP3CLK
MP3 DATA OUT
MILP
MICS
MP3RST
CD SCOR
CD SENS
CD CLK
CD XLT
CD DATA
CD XRST
CD XTCN
CDM SW2
CDM SW1
CDM-LOAD-IN
CDM-LOAD-OUT
CDM SW3
S702
S701
S703
CD MUTE
SCOR
SENS
CLOCK
XLT
DATA
XRST
XTACN
A
MAIN
Section
IC701
(LC)MOTOR DRIVER
4
2
2
9
7
7
RIN
FIN
OUT1
OUT2
M701(LOADING)
M
Click on the first or last page to see other HCD-CPX11 service manuals if exist.