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CDX-GT50W/GT500/GT500EE/GT550
CDX-GT50W/GT500/GT500EE/GT550
3-1. BLOCK DIAGRAM — CD SECTION —
SECTION 3
DIAGRAMS
89
RFO
RF AMP,DIGITAL SERVO,
DIGITAL SIGNAL PROCESSOR
IC2
83
RFEQO
3
RFRP
6
TEI
81
RFI
82
RFRPI
2
RFZI
7
TEZI
9
F0O
PD1
PD2
E
F
I-V AMP
PD LD
DETECTOR
88
AGCI
94
96
95
97
100
98
TNI
FPI1
FNI1
FPI2
FNI2
TPI
91
LDO
92
MDI
(FOCUS)
(TRACKING)
2-AXIS DEVICE
OPTICAL
PICK-UP BLOCK
(KSS1000E)
• Signal Path
: CD PLAY
LASER DIODE
M
M
M
18
17
VO3–
VO3+
14
13
VO1+
VO1–
12
11
VO2–
VO2+
10
9
VOL+
VOL–
FWD
REV
1
28
OPIN4–
26
OPOUT4
25
10
TRO
OPIN3–
23
OPOUT3
22
12
FMO
OPOUT1
4
13
DMO
OPOUT2
7
MUTE
21
16
15
VO4–
VO4+
M903
(LOADING)
M901
(SPINDLE)
M902
(SLED)
FOCUS/TRACKING COIL DRIVE,
SLED/SPINDLE/LOADING
MOTOR DRIVE
IC1
51
PIO3
48
PIO0
36
MSTBY
58
ZDET
37
/RST
43
/CCE
42
BUCK
41
BUS3
CD-L
MAIN
SECTION
A
30
LO
27
RO
R-CH
27
DEC SSTBY
15
CD ZDET
14
CD XRST
13
CD XCCE
53
MEC_SELFSW
45
MEC_INSW
42
MEC_LIMIT
12
CD BUCK
11
CD BUS3
40
BUS2
10
CD BUS2
39
BUS1
8
CD BUS1
38
BUS0
7
CD BUS0
81
X1
80
X0
MEC LOAD
43
DRVON
6
MEC EJECT
44
CD
SYSTEM CONTROL
IC3
+1.5V REG
IC6
SYSTEM CONTROL
IC711 (1/3)
37
DEC XMUTE
30
DEC INT
SW2
(SELF)
46
MEC_DSW
SW1
(DOWN)
SW3
(DISC IN)
SW4
(LIMIT)
56
UNISI
25
RXD
57
UNISO
58
UNICKI
50
BUS ON
51
BU IN
75
RSTX
61
EJECT OK
67
MECON CHK
1
CDON
1500MV
63
MECON
64
CDON
66
ZMUTE
60
A ATT
26
TXD
PD1
E
F
LD
MON OUT
FCS+
FCS–
TRK+
TRK–
PD2
AUTOMATIC
POWER
CONTROL
Q21
+1.5V ON/OFF
SWITCH
Q2,3
• R-ch is omitted due to same as L-ch.
24
23
X2
16.9344MHz
X1
12MHz
XI
XO
DISPLAY
SECTION
C
MAIN
SECTION
B
EJECT OK SW
UNI SI
UNI SO
59
LINK OFF
LINK OFF
ATT
UNI CLK
BUS ON
B/U CHECK
SYS RST
89
CD ON
VOUT
98
CDM ON
99
Z MUTE
MECHA+6V
93
68
CDON CHK
15
VDD
3
CE
D+3.3V
+1.5V
+1.5V
BU+3.3V
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