Diagrams; Block Diagram - Cd Section - Sony ICF-CD873 Service Manual

6-1. BLOCK DIAGRAM – CD Section –
MAIN BOARD (1/3)
CN501
PD1 I-V AMP
12 5
PHD1
35
DETECTOR
PD2 I-V AMP
A D
13 4
PHD2
36
10 7
B C
11 6
F
9 8
E
14 3
OPTICAL PICK-UP
(KSS-213B)
38
39
LASER DIODE
AUTOMATIC
7 10
POWER CONTROL 33
Q502
PD LD
5 12
2-AXIS
DEVICE
3 14
T-OUT+
27
T-OUT–
26
2 15
4 13 F-OUT+
18
1 16
F-OUT–
17
BH570 CN502
1 1
2
M570
M
3 2
SL-OUT–
(SLED)
1
5 4
SP-OUT+
12
M571
M
4 3
SP-OUT–
(SPINDLE)
11
6 5
S570
(LIMIT)
7 6
MOTOR BOARD
05
SECTION 6

DIAGRAMS

RF
RFO
+
SUMMING 31
AMP
RFI
30
FOCUS OK
AMP
FOCUS OK
COMPARATOR
MIRR
TTL
AMP
RF AMP,
FOCUS/TRACKING DEFECT
IIL
SERVO AMP
IC501 (1/2)
RV501
FOCUS
GAIN
FOCUS
FEO FEI
FOCUS PHASE
1 2
ERROR
COMPENSATION
AMP
F FE BIAS RV502
F I-V
37
AMP
FOCUS
BIAS
TRACKING
TEO TEI
TRACKING PHASE
ERROR 42 44
E
E I-V
COMPENSATION
AMP
AMP
EI
40
LD
LD PD
AMP AMP
PHD
34
FOCUS/TRACKING COIL DRIVE,
E-F BALANCE
SPINDLE/SLED MOTOR DRIVE
CONTROL
IC503
Q501
T-IN
TRACKING
25
COIL DRIVE
FOCUS F-IN
19
COIL DRIVE
SLED SERVO
IC501 (2/2)
SL-OUT+
SLO
SLED SL-IN SLED SLP
3 16 14
MOTOR DRIVE AMP
SP-IN SP-OUT
SPINDLE
10 14
MOTOR DRIVE
MUTE
– 15 –
FILTER
DIGITAL SIGNAL PROCESSOR,
CLV SERVO, D/A CONVERTER
IC502
29 34 31 30
RF
ASYMMETRY
36 DIGITAL PLL
CORRECTION
ASYI
38
ASYO
39
XPCK
50
FOK
FOK
25 23
DATO
DATA
21 15
CLK CLKO
TTL
19 17
XLT XLTO
20 16
IIL
XRST
22 8 XRST
DIGITAL
SEIN
SENS
IIL CLV
24 13
C.OUT CNIN
23 14
TTL
FEO
6
25 26 24 27 4 5
TAO
13
D414
41 39
43 CIN
29 CD ADJ
BP
(CD TEST MANUAL)
SYSTEM CONTROLLER
34 X-RESET
SP-IN
15
7
MUTE
6
ERROR 16K
CORRECTOR RAM
PCMD PCMDI
44 45
BCK BCKI
EFM
46 47
DEMODULATOR
LRCK LRCKI
42 43
C2PO
54
DOUT
DIGITAL
61
OUT
SUB-CODE
PROCESSOR
GENERATOR
XUGF
63
49
WFCK
64
CPU INTERFACE
EMPH
62
GFS
51
7 9 11 10 1 2 3 22 18 19 20
B+
(CD 5V)
CLOCK
42 32 30 31 44
DATA
DATA 40
LATCH
R-LAT 37
IC401 (1/2)
DOOR-IN 62
– 16 –
ICF-CD873
LPWM
70 CD L-CH
NLPWM
69
LOW-PASS
FILTER
RPWM
IC301
78 CD R-CH
NRPWM
77
XTAI
73
X501
16.933MHz
XTAO
74
XTSL
CLOCK
21
A
(Page 19)
60
DATA, CLOCK, LATCH
B
(Page 18)
S424
(CD LID OPEN/CLOSE DET)
PUSH SWITCH BOARD
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