Sony PMC-MD55 Service Manual page 141

PMC-MD55
6-2. BLOCK DIAGRAM – MD Section –
HR901
(OVER WRITE HEAD)
OPTICAL PICK-UP BLOCK
(KMS-260A)
F
C B
I
D A
E
DETECTOR
PD LD
LASER DIODE
2-AXIS
DEVICE
FCS+
FCS–
TRK+
TRK–
MOD
HF MODULE
05
– 34 –
BD BOARD (1/2)
DIGITAL SIGNAL PROCESSOR,
EFM/ACIRC ENCODER/DECODER,
SHOCK PROOF MEMORY CONTROLLER,
ATRAC ENCODER/DECODER
CN104
OVER WRITE
1
HEAD DRIVE
IC181, Q181, 182
SCTX
48 47 RF AMP,
FOCUS/TRACKING ERROR AMP
IC101
CN101 (1/2)
I 16 I
1
RFO AGCI RF AGC
J 12 J RF AMP 46 40
& EQ
2
EQ
WBL
B.P.F.
13
B 3T
TEMP PEAK &
BOTTOM
WBL
J
AT ADFM ADIN
B.P.F. 29 30
AMP
A 14 A
4
B ABCD
5
I-V
AMP
C
6 AMP
D FOCUS
7
ERROR AMP
C 18
D 19
E 20 E
8
I-V TRACKING
17 F
F
AMP ERROR AMP
9
COMMAND
AUTOMATIC
ILCC 9 APC
LD/PD
POWER CONTROL 11
AMP
Q162, 163
SERIAL/PARALLEL
V-I
CONVERTER,
CONVERTER
DECODER
LASER ON
PD 6 PD
SWITCH 10
Q101
12 16 17 18
FOCUS/TRACKING COIL DRIVE,
SPINDLE/SLED MOTOR DRIVE
IC152
16
PSB
SPFD
OUT4F IN4R
6 3
M101
M M
SPRD 83 10 13 67 65 66 75 74 63 64
(SPINDLE)
8 OUT4R IN4F 4
RECP
XRST
AUTOMATIC
POWER
CONTROL
SFDR
27 OUT2F IN2F 29 92
M102
M ANALOG MUX
SRDR
(SLED)
25 OUT2R IN2R 30 91
A/D CONVERTER
DIGITAL SERVO
CN101 (2/2)
SIGNAL
4 FFDR FROM CPU
PROCESS
21 OUT1F IN1F 19 88
INTERFACE
FRDR
23 OUT1R IN1R 18 89
AUTO
SEQUENCER
3
2 TFDR
12 OUT3F IN3F 14 86
DIGITAL SERVO
1 TRDR
10 OUT3R IN3R 15 85 SIGNAL PROCESSOR
IC121 (2/2)
8
IC121 (1/2)
IC121 (1/2)
EFMO
100
FILI SAMPLING
60
RATE
PCO
CONVERTER
59
PLL
CLTV
62
FILO
61
DIGITAL
ASYO
AUDIO
53
INTERFACE
ASYI
54
COMPA-
RF RFI
RATOR
38 57
AUX
33
PEAK
37
CLOCK
BOTM
GENERATOR
36
SUBCODE
ADIP PROCESSOR
ADFG
32 78 DEMODULATOR/ INTERNAL BUS
DECODER
ABCD
35
FE CPU MONITOR
34
INTERFACE
CONTROL
F0CNT SPINDLE
79
SERVO
TE
26
SE
28
94 93 12 11 15 14 9 8 5 6 7 1 2 3 4
F0CNT
20
3 5 23 7 1 15 18 10 12 20 2 8 19
21 19 1 17 23 9 6 14 12 4 22 16 5
CN602
(1/4)
16 15 89 12 32 69 68 67 90 77 33 41 42
CN602
(2/4)
CN103
(2/5) 9 15
75 LDON
4 26
81 DIG-RST
17 7
80 WR-PWR
14 10
86 MOD
95 94
4 5
LOADING REFERENCE
MOTOR DRIVE VREF 6 VOLTAGE SWITCH
IC602 Q611
7 1
CN605
(1/2)
1 2
1 2
XLRF XLAT
80 CN601
CKRF SCLK
(1/2)
81
DTRF SWDT
82
M
HF MODULE
M103
SWITCH
(LOADING)
IC103, Q102 – 104
SW BOARD (1/2)
CN103
(3/5)
21
SDA 5
EEPROM
22
IC171
SCL 6
– 35 –
CN102 CN601
DG BOARD
13 9
+3.3V
8 14
MD B+ B+
3 REG 1
(+3.3V) (+5V)
IC192 10 12
ADDT 1 21
DOUT
25 12
DATAI
22 DIN
15
XBCKI
SERIAL
24
INTERFACE
BCK
LRCKI
11
23
LRCK
10
DIN0
DEMO
19
18
DIN1
20
DOUT
21
3 19
DADT
26
XBCK 5 17
28
LRCK 7 15
27
FS256
29
15 7
OSCI DIVIDER
16
IC123
OSCO
17
D-RAM
IC124
XOE
43 16 XOE
XWE
CN103
47 3 XWE
(1/5) XRAS
46 4 XRAS
XCAS
44 17 XCAS
EMP 70
DA-RST
83
CN605
CN601
SW BOARD (2/2)
MD MECHANISM CONTROLLER (2/2)
(2/2)
3 3
S601
IC601 RECP 37
(REC POSITION)
5 5
S602
PACK-OUT 8
(PACK OUT)
7 7
S604
PBP 38
(PLAY POSITION)
B+
(D +5V)
BD BOARD (2/2)
CN602 CN103
(4/4) (4/4)
8 16
S101
39
LD-LOW LIMIT-IN 96
(LIMIT IN)
S102
28 XIN
-1 S102-1
13 11
REFLECT
X601 98 (REFLECT RATE DETECT)
11 13 -2
12MHz S102-2
PROTECT 97
(PROTECT DETECT)
27 XOUT
XIN-T
25
X602
32.768kHz
24 XOUT-T STB 36
SYS-RST 20
RESET
SWITCH
Q604
PDOWN 13
CN602
(3/4) RXD (UART) 57
3
52 SDA
TXD (UART) 58
2
RTS
59
53 SCL
CTS 60
CN603
LEVEL FROM CD
2
D-IN
H
SHIFT SECTION
IC604 (Page 39)
D/A, A/D
CONVERTER
IC603
CN604
TO FUNCTION
(1/2) 8
VOUTL DA-LCH
I
19 SELECT SECTION
D/A
VOUTR
(Page 40)
CONVERTER 20 R-CH
FROM FUNCTION
3
VINL AD-LCH
J
A/D 6 SELECT SECTION
VINR
CONVERTER R-CH (Page 42)
3
SYSCK 9
PDDA PDAD
8 7
12
MD PLAY/REC
SWITCH
13
Q620
D FLIP–
1 CLK FLOP Q 5
IC606
7 1
6 2
IC605
512FS OSC
X603
22.5792MHz
• SIGNAL PATH
: MD PLAY
: MD REC (ANALOG)
: MD REC (DIGITAL)
B+
B+
B+ SWITCH
(AU +3.3V)
Q617
Q616 R-CH : Same as L-CH.
B+
B+ B+ MAIN BOARD (2/6)
SWITCH
(+5V) (D +5V)
Q612
SYSTEM
CN405
CONTROLLER
(1/3)
IC405(2/5)
Q610
12
18 REC-H
B+
B+ B+
13
SWITCH
(+3.3V) (BU +3.3V) 17 MD-H
Q603 CN604
(2/2)
21
21
19 MD-RST
26 26
22 MD-PDOWN
22 22
70 MD-STXD
23 23
69 MD-SRXD
24 24
20 MD-SCTS
25 25
21 MD-SRTS
– 36 –