![background image](http://html.mh-extra.com/html/sony/hcd-l7hd/hcd-l7hd_service-manual_420792062.webp)
62
62
HCD-L7HD
• IC Block Diagrams
• Waveforms
– BD Board –
IC1362 SN74HC74ANS-E05
– TOUCH SW Board –
IC101 CXD3068Q
– BD Board –
IC103 CXA2581N-T4
CE
RFDC
ADIO
IGEN
ASYO
ASYI
RFAC
CLTV
FILO
FILI
PCO
BIAS
VCTL
V16M
VPCO
TE
ASYE
MD2
DOUT
LRCK
PCMD
BCK
EMPH
XTSL
XTAI
XTAO
SOUT
SOCK
XOLT
SQSO
SQCK
SCSY
SBSO
EXCK
XRST
MUTE
DATA
XLAT
CLOK
SENS
SCLK
ATSK
W
FCK
XUGF
XPCK
GFS
C2PO
SCOR
CAM
WDCK
COUT
MIRR
SE
FE
VC
TES1
TEST
FFDR
TRDR
TFDR
SRDR
SFDR
FSTO
SSTP
LOCK
PWMI
FOK
FRDR
MDP
DFCT
CLOCK
GENERATOR
ASYMMETRY
CORRECTOR
DIGITAL
PLL
CPU
INTERFACE
INTERFACE
CORRECTOR
PROCESSOR
SUB CODE
RAM
32K
DEMODURATOR
EFM
ERROR
D/A
DIGITAL
OUT
INTERFACE
SERVO
INTERFACE
SERVO
AUTO
MIRR
DFCT
FOK
SERVO
FOCUS
SERVO DSP
SERVO
SERVO
SLED
TRACKING
FOCUS PWM
GENERATOR
GENERATOR
GENERATOR
SLED PWM
TRACKING PWM
A/D
CONVERTER
OPAMP
ANALOG SW
PWM GENERATOR
DIGITAL
CLV
SERVO BLOCK
RW/ROM
RW/ROM
EQ ON/OFF
VOFST
VOFST
DVC
VC
VC
VC
RW/ROM
VC
DVC
30
29
28
+
–
+
–
DVC
VCC
DVC
27
26
25
24
RW/ROM
EQ
23
22
21
20
19
RFAC
VCA
VCC
+
–
DVC
+
–
+
–
RW/ROM
VC
RW/ROM
DVC
+
–
3
A
B
C
D
B
C
A
A
A
B
C
D
B
C D
D
+
–
1
2
APC AMP
5
6
7
8
9
4
RFAC
SUMMING
AMP
RW/ROM
APC-OFF
(Hi-Z)
RW/ROM
(H/L)
VOFST
VC
RW/ROM
+
–
10
11
GM
GM
18
17
16
B
D
A
C
13
14
15
12
EQ IN
LD
PD
GND
A
B
C
D
AC SUM
E
F
DVCC
DVC
RFAC
SW
DC OFST
RFDCI
RFDCO
VC
RFC
VFC
BST
RFG
VCC
CEI
CE
TE BAL
TE
FEI
FE
14
1
2 3
4
5
6
7
13 12 11
10
9
8
VCC
GND
CK
CLR
CK
CLR
Q
PR
Q
Q
PR
Q
D
D
1
IC101
us
(XTAO)
4.2 Vp-p
29.6 ns
2 V/DIV,10 ns/DIV
– AMP Board –
2
IC600
eh
(XT2)
3
IC600
ek
(X2)
3.9 Vp-p
50 ns
1 V/DIV,20 ns/DIV
1 V/DIV,10
µ
s/DIV
3.8 Vp-p
30.5
µ
s
4
IC300
4
5.1 Vp-p
20.3 ns
2 V/DIV,10 ns/DIV
– CD Board –
– MAIN Board –
5
IC745
2
6
IC500
eh
(XT2)
1 V/DIV,10
µ
s/DIV
1 V/DIV,20 ns/DIV
5 Vp-p
81.3 ns
7
IC500
ek
(X2)
3.4 Vp-p
50 ns
1 V/DIV,20 ns/DIV
3.3 Vp-p
30.5
µ
s
– FL Board –
8
Q1281 (Collector)
21.6 Vp-p
33.5
µ
s
10 V/DIV,20
µ
s/DIV
– HDD SUB Board –
9
X102 (IC101
<zbb>
(XTAL))
3.4 Vp-p
200 ns
1 V/DIV,100 ns/DIV
– HDD IF Board –
q;
IC1000
qd
(X-OUT)
qa
IC1002
qa
2.7Vp-p
22.2 ns
3.8 Vp-p
100 ns
1 V/DIV,10 ns/DIV
1 V/DIV,40 ns/DIV
qs
IC1100
wd
(XI)
qd
IC1101
wd
(XI)
2 V/DIV,40 ns/DIV
2 V/DIV,100 ns/DIV
5 Vp-p
166 ns
5.5 Vp-p
80 ns
Summary of Contents for HCD-L7HD
Page 39: ...39 39 HCD L7HD 6 7 Schematic Diagram MOTOR Section ...
Page 42: ...42 42 HCD L7HD 6 10 Schematic Diagram HDD1 Section 1 2 See page 62 for Wavefoms ...
Page 46: ...46 46 HCD L7HD 6 14 Schematic Diagram HDD2 Section 2 2 FOR MEMORY STICK NOT USED ...
Page 49: ...49 49 HCD L7HD 6 17 Schematic Diagram MAIN Section 1 2 See page 62 for Wavefoms ...
Page 55: ...55 55 HCD L7HD 6 23 Schematic Diagram AMP Section See page 62 for Wavefoms ...
Page 57: ...57 57 HCD L7HD 6 25 Schematic Diagram DISPLAY Section See page 62 for Wavefoms ...
Page 59: ...59 59 HCD L7HD 6 27 Schematic Diagram CONTROL Section See page 62 for IC Block Diagrams ...
Page 61: ...61 61 HCD L7HD 6 29 Schematic Diagram POWER Section ...
Page 95: ...95 HCD L7HD MEMO ...