Block Diagram -Cd Section - Sony HCD-GX25 Service Manual

5-2. BLOCK DIAGRAM — CD SECTION —
A
8
DETECTOR
A D
D
7
C
B C
B
E
E
9
F
F
10
LASER DIODE
+3.3V
AUTOMATIC
LD
POWER CONTROL 80
Q701
PD LD
PD
79
OPTICAL PICK-UP
BLOCK
(KSS-213D)
S701
70 LIMIT SW
(LIMIT)
FOCUS/TRACKING COIL DRIVE,
SPINDLE/SLED MOTOR DRIVE
IC722
2-AXIS
DEVICE
18 VO3(+)
TIN 20
17 VO3(–)
11 VO2(+)
FOIN 10
12 VO2(–)
26 VO4(+)
M701
M
SLIN 25
(SLED)
27 VO4(–)
2 VO1(+)
M702
M
SPIN
(SPINDLE)
1 VO1(–)
MUTE
RF AMP, FOCUS/TRACKING ERROR AMP,
DIGITAL SIGNAL PROCESSOR, DIGIRAL SERVO PROCESSOR,
DIGITAL FILTER, D/A CONVERTER
FIN2
RF EFMIN
EQ,
ERROR
RF AMP 4 3
AGC
CORRECT
FIN1
PH, BH
TIN1
A/D
TBAL
CONVERTER
TIN2
SERVO
PROCESSOR
LDD
APC
D/A
CONVERTER
LDS
20 21 23 22 25
3
7
IC721
LCHO
42
D/A
CONVERTER RCHO
45 R-CH
ASDFIN
57 2 ADDATA
ASDACK
EXTERNAL
56 3 ADBCK
AUDIO IN ASLRCK
55 4 ADLRCK
DATA
60 79 DATAIN
DATACK
SERIAL OUT 59 80 DATACK
LRSY
58 1 LRSY
EFLG
53
C2F
52 5 C2FIN
FSX/16MIN
50 9 CKOUT
MP3RES 26 78 RESB
16MOUT
54 7 CKIN
73 CMDOUT
XIN
49
74 CMDIN
CLOCK
GENERATOR 75 CL
XOUT
48
X701
16.9344MHz
CD MUTE 72
DO
64 99 I-LC78646/LC78684 DI
DI
63 98 O-LC78646/LC78684 DO
CL
COMMAND
62 100 O-LC78646/LC78684 CLK
INTERFACE
CE
61 5 O-LC78646 CE
*WRQ
65 77 I-CD WRQ
DRF 67 76 I-CD DRF
66 4 O-LC78646 RESET
*RES
M751
(LOADING)
M741
(TABLE)
27 27
• R-ch is omitted due to same as L-ch.
• SIGNAL PATH
: CD PLAY
• Abbreviation
RU : Russian model
(RG220:AEP,UK,RU)
MUTING
MP3 DECODER MEMORY
IC801 Q311
IC802
R-CH
MUTING CONTROL
SWITCH
Q312
OEB 45 29 OE
WEB 42 15 WE
RASB 41 16 RAS
CASLB 43 31 LCAS
CASUB 44 30 UCAS
76 66
6 10
S-MUTE
O-SYS-MUTE 1
O-POWER
O-POWER RELAY 94
HOLD
I-HOLD 27
RESET
RESET 11
POWER DOWN
I-POWER DOWN 3
TABLE ADDRESS
LEVEL SHIFT
I-CD NUMBER SENS 78 SENSOR
Q731
IC731
ROTARY
+
I-CD ENCODER 20 ENCODER
RE701
SYSTEM CONTROLLER
IC601 (1/2)
OPEN/CLOSE
DETECT
OPEN
LOADING MOTOR DRIVE
CLOSE
IC701
LM-F
4 OUT1 FIN 7
M
LM-R
2 OUT2 RIN 9
TABLE MOTOR DRIVE
IC712
TM-F
4 OUT1 FIN 7
M
TM-R
2 OUT2 RIN 9
HCD-GX25/RG220
CD-L A
AMP/POWER SUPPLY
SECTION
(Page 29)
S-MUTE
B AMP/POWER SUPPLY
O-POWER
SECTION
HOLD
(Page 29)
RESET
AMP/POWER SUPPLY
C
SECTION
POWER DOWN
(Page 29)
DISC TRAY
ADDRESS DETECT
S751
LM-F
LM-R
TUNER/TAPE/PANEL
D
SECTION
TM-F
(Page 28)
TM-R