Sony CX-LFA500 / XR-FA500 Service Manual ▷ View online
17
17
CX-LFA500
SECTION 6
DIAGRAMS
• 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.
•
f
: internal component.
•
: Pattern from the side which enables seeing.
•
A
: B+ Line.
•
B
: B– Line.
• 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.
F
: TUNER
J
: CD
d
: AUX
E
: PB (TAPE)
a
: REC (TAPE)
Note: The components identified by mark
0
or dotted line
with mark
0
are critical for safety.
Replace only with part number specified.
• Indication of transistor
C
B
These are omitted.
E
Q
B
These are omitted.
C
E
• Waveforms
– CD Board –
– CD Board –
1.1Vp-p
1
IC103
qg
(RFAC)
(CD Play Mode)
(CD Play Mode)
2
IC101
el
(FE)
(CD Play Mode)
(CD Play Mode)
200mV/DIV, 1
µ
s
/DIV
50mV/DIV, 200
µ
s
/DIV
100mV/DIV, 200
µ
s
/DIV
1V/DIV, 20ns/DIV
200mVp-p
250mVp-p
3
IC101
ra
(TE)
(CD Play Mode)
(CD Play Mode)
4
IC101
yj
(XTAO)
5.4Vp-p
59ns
MAIN BOARD
CD BOARD
LOADING BOARD
PHONE BOARD
CONTROL BOARD
POWER BOARD
6
IC601
qh
(XOUT)
1V/DIV, 40ns/DIV
1V/DIV, 20
µ
s
/DIV
5
IC601
qd
(O-XT2)
5.5Vp-p
30.5
µ
s
2.7Vp-p
116ns
7
Q301 collector (Rec mode)
5V/DIV, 4
µ
s
/DIV
11.8Vp-p
11.7
µ
s
– FRONT Board –
– MAIN Board –
18
18
CX-LFA500
6-1. Block Diagram – CD Section –
: CD
• Signal Path
SQSO
SQCK
A/D
CONVERTER
CH1OUTF
CH1OUTR
6
7
8
9
16
18
11
10
12
2
1
51
49
48
43
24
41
40
39
64 15
28
29
30
31
32
33
24
25
23
5
6
2
3
17
18
15
16
E
B
C
D
A
CD +5V
F
DETECTOR
A
B
C
D
RF
SUMMING
AMP
FOCUS
ERROR AMP
TRACKING
ERROR AMP
RFAC
FE
IC103
RF AMP,
FOCUS/TRACKING ERROR AMP
TE
E
F
F I-V AMP
E I-V AMP
Q101
AUTOMATIC
POWER
CONTROL
APC LD
AMP
LD
LD
PD
LASER DIODE
RFAC
ASYO
ASYI
ASYMMETRY
CORRECTION
CORRECTION
DIGITAL
PLL
IC101 (1/2)
DIGITAL SIGNAL PROCESSOR,
DIGITAL FILTER, D/A CONVERTER
DATA
XLAT
CLOK
14
5
6
MDP
26
7
8
XLON
3
XRST
DIGITAL
CLV
D/A
INTERFACE
SE
TE
FE
RFDC
FOCUS/TRACKING/SLED
SERVO DSP
FOCUS/TRACKING/SLED
PWM GENERATOR
SFDR
CH3FIN
CH4SIN
CH3RIN
CH3OUTF
CH3OUTR
CH2FIN
CH2RIN
CH1FIN
CH1RIN
20
MUTE
SRDR
TFDR
TRDR
FFDR
FRDR
S101
(LIMIT)
EMPH
WFCK
GFS
MIRR/DFCT/
FOK
DETECTOR
SERVO AUTO
SEQUENCER
SERVO
INTERFACE
CPU INTERFACE
18
63
62
61
19
19
SENS
20
86
97
87
94
3
SCOR
C-SQSO
C-SQCK
C-XLT
C-CLK
C-DATA
C-SENS
C-SCOR
1 2
96 88
SCLK
COUT
9 21
SSTP
27
FOK
22
23
MIRR
DFCT
TO SERVO INTERFACE
CH4OUTF
CH4OUTR
(SPINDLE)
MOTOR
DRIVE
MOTOR
DRIVE
CH2OUTF
CH2OUTR
M
M
(SLED)
IC102
FOCUS/TRACKING COIL DRIVE,
SPINDLE/SLED MOTOR DRIVE
2-AXIS
DEVICE
(TRACKING)
(FOCUS)
IC101 (2/2)
DIGITAL SERVO
PROCESSOR
OPTICAL PICK-UP
BLOCK
KSM-213D
SW
PD
I-V AMP
12
11
13
14
54
56 53
55
FILTER
FILO
PCO
CLTV
FILI
EFM
DEMODULATOR
SERIAL
IN
INTERFACE
DIGITAL
FILTER,
NOISE SHAPER
PWM
&
INTEGRATOR
BUFFER
CLOCK
GENERATOR
TIMING
LOGIC
DIGITAL
OUT
INTERNAL BUS
16K
RAM
ERROR
CORRECTOR
SUBCODE
PROCESSOR
60
85
C-XRST
XTAI
X101
16.9344MHz
AIN1
AIN2
AOUT1
AOUT2
TO MIRR/DFCT/
FOK DETECTOR
FOK DETECTOR
PCMD
BCK
LRCK
C2PO
C2PO
DOUT
66
XTAO
67
70
77
LOUT1
LOUT2
R-CH
72
75
71
76
A
MAIN SECTION
EQ
IN
15
3
4
EQ
AC
SUM
17
FEI
RF DC
AMP
28
RFDCO
29
RFDCI
COIL
DRIVE
COIL
DRIVE
2
1
C-PWM2
C-PWM1
PWM3
PWM2
PWM3
PWM2
95 C-LD ON
IC601 (1/2)
CD
L-CH
RFAC
VCA
+7V
+7V
+5V
SYSTEM CONTROLLER
+3.3V
REG
Q102
CD +5V
REG
Q419
Ver 1.2 2003.11
19
19
CX-LFA500
6-2. Block Diagram – Main Section –
: TUNER
: CD
• Signal Path
• R-CH is omitted due to same as L-CH.
: AUX
: PB (TAPE)
: REC (TAPE)
R-CH
BIAS
OSC
Q301
Q302
Q302
+VM
ERASE
HEAD
REC/PB
HEAD
DECK
Q609
PB
SWITCH
R COUNT
99
R CLK
100
R CE
84
SYSTEM CONTROLLER
IC601(2/2)
R DATA
98
L
R
AUX
J201
MUTE CONT
Q263
J601
HEADPHONES
R CH
R CH
L
R
L
R
FUCTION
KEY
REMOTE
CONTROL
RECEIVER
IC602
S601-607
D603
ECO
TUNER UNIT
L-CH
R-CH
R-CH
D OUT
D IN
CLK
CE
TUNED
R-CH
R TUNED
93
Q310,311
REC
SWITCH
Q305,306,307
L301
REC BIAS
Q303
Q304
MECHA BLOCK
SW1
PLAY
T SOL
DRIVE
DRIVE
Q608
MOTOR
DRIVE
Q606
T REC
77
BIAS
81
T SW
24
XT1
12
XT2
13
X601
32.768kHz
X IN
15
X OUT
16
X602
8.64MHz
MUTE
Q261
9
P AMP MUTE
Q221,253
Q214,216-220
Q223,225,229
Q223,225,229
29
RMC
FUCTION
KEY
S608-613
19
KEY2
BASE
ENCODER
S614
20
BASE ENC
75
LED CONT
3
1
RESET
SWITCH
Q601
11
RESET
RESET
IC603
2
1
D610
25
SH DET
D801-804
RELAY
DRIVE
AC
IN
PT802
ECO
CD POWER
CONTROL
Q420
Q401
RY801
18
KEY1
82
CD FU
REG
Q312
+10V
+5V
+VM
PB/REC EQ AMP
IC301
AUX L
19
18
OUT L
TU L
23
TAPE L
2
CD L
21
16
OUT R
R-CH
13
CONT
28
REC OUT
R MUTE
80
RDS SIG
23
RDS DATA
91
R ST
92
STEREO
MUTE
FM SOUT
R DATA
R INT
RDS CLK
27
R-CH
R-CH
SW2
R REC
SW3
F REC
SW4
PACK
SW5
PEND
M
M1
DECK
MOTOR
L OUT2
R-CH
L OUT1
F DATA
10
T PLAY SW
79
T MTR CONT
6
T END SW
5
T SOL
4
MOTOR DRIVE
IC604
OUT1
4
7
FIN
OUT2
2
9
RIN
OPEN
M
TRY
MOTOR
CLOSE
CD OPEN/CLOSE
28 CD DOOR SE
74 OPEN
73 CLOSE
Q222
DC
DET
PRE
AMP
POWER
AMP
R CH
J203
SPEAKERS
45
47
50
.
52
66
.
SEG1
SEG20
34
45
GRID1
GRID11
FLUORESCENT
DISPLAY
FL601
FIL1
FIL2
TREBLE
ENCODER
S615
21
TREBLE ENC
VOLUME
ENCODER
S616
22
VOL ENC
POWER
CONTROL
D602
+5V
REG
Q602-604
µCON +B
V ECO
D608
POWER
SWITCH
8
P CONT
Q605
Q610
LINE
FILTER
L801
V ECO
PT801
POWER
TRANS
FIL2
FIL1
D402
D404-407
2 TIMES
DET
D409,410
-VFL
REG
REG
Q413
-VFL
-VP
+VP
+7V
REG
Q416-418
+7V
+VM
REG
Q402,403,405
+VM
+VCC
REG
Q406,407
+VCC
D417
AC
DET
Q412
DC
DET
Q408,409
HOLD
Q411
OVER
CURRENT
DET
Q201,243
25
HOLD
L-CH
A
CD SECTION
20
20
CX-LFA500
6-3. Printed Wiring Board – CD Section –
IC102
IC101
IC103
TP (VC)
TP (RFAC)
TP (DVC)
CN303
22
1-680-849-
(
)
1
2
A
B
C
D
E
F
G
3
4
5
6
7
8
Ref. No.
Location
D101
F-5
IC101
E-4
IC102
C-5
IC103
D-2
Q101
C-2
Q102
G-5
• Semiconductor
Location
• See page 17 for Circuit Boards Location.
Ver 1.2 2003.11
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