Sony CX-LEM220 Service Manual ▷ View online
26
26
CX-LEM220
CX-LEM220
7-10. PRINTED WIRING BOARD — POWER BOARD —
•
See page 15 for Circuit Boards Location.
:Uses unleaded solder.
MAIN
POWER
TRANSFORMER
(AC IN)
*
SUB POWER
TRANSFORMER
TRANSFORMER
*
NOT REPLACEABLE :
BUILT IN TRANSFORMER
MAIN BOARD
CNB903
E
1-863-866-
POWER BOARD
• Semiconductor
Location
Ref. No.
Location
D905
A-1
D906
A-3
D907
A-2
D908
A-2
D909
A-2
D910
A-3
D911
B-2
D912
A-2
D913
B-2
D914
B-2
D916
B-1
D917
B-1
D918
A-1
D919
B-1
D920
B-2
D921
B-2
D922
A-3
D923
A-3
(Page 20)
27
27
CX-LEM220
CX-LEM220
7-11. SCHEMATIC DIAGRAM — POWER BOARD —
TM
TM
TM
TM
T-77
T-77
T-77
T-77
T-77
T-77
BB
B
B
10E-2
T-77
T-77
T-77
JW914
JW913
*
Not replaceable :
Built in transformer
*
MAIN POWER
TRANSFORMER
SUB POWER
TRANSFORMER
POWER BOARD
MAIN
BOARD
CN901
E
(AC IN)
NOTE:
RXXX
(Page 21)
28
28
CX-LEM220
CX-LEM220
Approx. 400 mVp-p
Approx. 200 mVp-p
0.6 Vp-p
3.4 Vp-p
59 ns
1
IC101
w;
(TEI)
(CD Play mode)
• Waveforms
– BD Board –
– BD Board –
2
IC101
ws
(FEI)
(CD Play mode)
3
IC101
ek
(RFACO)
(CD Play mode)
12.6 Vp-p
12.1
µ
s
5
Q344 collector
(REC mode)
5
µ
s/DIV 5 V/DIV
– MAIN Board –
3.5 Vp-p
30.5
µ
s
3.1 Vp-p
100.6 ns
6
IC801
qd
(O-XT2)
10
µ
s/DIV 1 V/DIV
– CONTROL Board –
7
IC801
qh
(XOUT)
50 ns/DIV 1 V/DIV
•
IC Block Diagrams
– BD Board –
IC101
CXD3058AR
4
IC101
us
(XTAO)
(CD Play mode)
20 ns/DIV 1 V/DIV
XRST
SERVO
INTERFACE
30
RFDCO
32
AC_SUM
33
EQ_IN
31
PDSENS
29
AVDD4
85
LMUT
86
XTSL
87
IOVSS0
88
XTACN
89
SQSO
90
SQCK
91
97
98
SBSO
92
93
94
95
96
99
EXCK
1
MIRR
2
DFCT
3
FOK
9
SFDR
10
SRDR
11
TFDR
12
TRDR
13
FFDR
14
FRDR
18
E
19
F
25
A
26
B
27
C
28
D
20
TEI
22
FEI
21
TEO
23
FEO
24
VC
5
LOCK
6
MDP
7
SSTP
4
VSS
8
IOVSS1
15
IOVDD1
16
AVDD0
17
AVSS0
64 EMPH
62 BCK
63 VDD
67 DOUT
65 EMPHI
66 IOVDD2
60 VSS
59 LRCK
61 PCMD
69 TES1
70 IOVSS2
73 XTAI
71 XVSS
74 XVDD
75 AVDD1
72 XTAO
68 TEST
MIRR
DFCT
FOK
TE
FE
SUM
PWM
GENERATOR
SERVO
DSP
A/D
CONVERTER
DC/DC
CONVERTER
ASYNMMETRY
CORRECTOR
SUB CODE
PROCESSOR
ERROR
CORRECTOR
32k
RAM
D/A
INTERFACE
D/A
COVERTER
SELECTOR
DIGITAL OUT
CPU INTERFACE
CLOCK
GENERATOR
SERVO
AUTO
SEQUENCER
LPF
LPF
DIGITAL
CLV
VC
ATT
36
RFC
EQ
38
RFACO
AMP
34
LD
35
PD
39
RFACI
40
AVDD3
41
BIAS
53
DDVRSEN
54
AVSS5
51
AVDD5
55
DDCR
56
BCKI
52
DDVROUT
42
ASYI
44
VPCO
45
VCTL
46
AVSS3
43
ASYO
DIGITAL
PLL
EFM
DEMODULATOR
48
FILO
47
CLTV
49
FILI
50
PCO
37
AVSS4
APC
105
XPCK
104
XUGF
103
WFCK
102
ATCK
SYSM
VSS
DATA
XLAT
VDD
100
SENS
CLOK
101
SCLK
106
GFS
109
VDD
108
SCOR
107
C2PO
110
C4M
112
COUT
111
WDCK
77 VREFL
78 AVSS1
79 AVSS2
76 AOUT1
81 AOUT2
82 AVDD2
83 IOVDD0
84 RMUT
80 VREFR
57 PCMDI
58 LRCKI
29
CX-LEM220
IC251
BA5947FM
1
LEVEL SHIFT
MUTING
D
15
16
+
–
+
–
D
D
17
18
D
19
20
VREF
21
22
23
24
25
26
27
28
PREVCC
OPOUT
OUTVREF
CH4CAPA
CH4IN
CH3FIN
CH3RIN
GND
MUTE
POWVCC
CH3OUTF
CH3OUTR
CH4OUTF
CH4OUTR
OPIN
–
2
OPIN+
INTERFACE
14
13
D
12
11
D
10
9
8
7
6
CH2FIN
CH2RIN
GND
5
4
CH1FIN
CH1RIN
VREFIN
POWVCC
CH2OUTR
CH2OUTF
CH1OUTR
CH1OUTF
INTERFACE
D
D
3
SW
INTERFACE
IC302
BD3881FV
28
REC1O
27
REC1N
26
REC2N
25
REC2O
24
INC2
23
INC1
22
INB2
21
INB1
20
INA2
19
INA1
18
OUT1
17
BAS1
16
OUT2
15
BAS2
BASS
BASS
13
CONT
14
VEE
12
VDD
11
TRE2
10
TRE1
TREBLE
TREBLE
7
VOLIN1
8
VOLIN2
9
GND
VOLUME
VOLUME
6
PB1O
LOGIC
CONTROL
5
PB2O
4
PB2N
1
PB1N
2
PB1P
3
PB2P
– MAIN Board –
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