Dvd基板の動作 - Yamaha DVR-S60 Service Manual

DVR-S60/NX-SW60
DVD P.C.B. OPERATION / DVD基板の動作
1. General operation diagram
The circuit mounted on the DVD part (Front-end Board) is
configured as shown, which is divided into the following
blocks according to the main IC's.
PICK-UP;SF-HD6
DVD/CD PD
A
B
C
D
E
F
VR-CD
VR-DVD
MD
LD-CD
VD
HFM
High-
LD D
frequency
circuit
LASER
DIODE
GND-LD
F-
FOCUS
F+
ACTUATOR
T-
TRACKING
T+
M
SLED
MOTOR
LIMIT
SWITCH
OPEN/CLOSE
SWITCH
M
LOADING
MOTOR
SPINDLE
MOTOR
HALL
18
VREF
RF AMP
RFOP,RFON,PH,TE,ADBH
MD
LD
TOST,FOST,BST,VCA
IC100 TBAL,FBAL,SGC
LA9702
DEF
MD
DEFECTO
LD XHTR
5Vd
CAO
CAN
FE
BU4066
LDON1,LDON2
CD x2
RFSCT,EQSCT ANALOG SWITCH
CD x4
PP/TE,DPD/TE
4-CH BTL DRIVER
IC601 9V
BA5937
FDD
TDD
SLD
OPEN/
CLOSE
DMUTE2
3-PHASE MOTOR DRIVER
9V
U+,U-
V+,V-
W+,W- SPD
IC602
FG
BA6849
FR
U,V,W
DMUTE
1. 一般的動作図
DVD基板 （フロントエンド） に取り付けられている回路の
構成は下記のとおりで、主 IC にしたがって下記のブロッ
クに分かれます。
JVAD
JV
BH
ADBH
IC200
LC78661W
DEFECTI
DEF_INH
FE
IC101
IC500
M37903S4CHP
MICRO COMPUTER
DSP
9V
(actuator)
IC201
(motor)
T224162B
5V
(analog)
DRAM
16.934MHZ
IC900
5Vd
3.3V
BA033
(digital)
(FOR DSP)
REGULATOR
DACK
DREQ
DCLK,DBGN,DERR
SDT[O;7]
EMPH,C2F,LRCK,BCK,CD_DATA,SPDIF
16MHZ
IC504
TC7SHU04FU
INVERTER
IC550
TO BACK-END
LE28C1001
BLOCK
FLASH MEMORY
RXD,SCLK
HD_INT,TXD,RDY_HIF
RESET IC502 HRST
M51953
RESET
16MHZ
PH 6P
FFC 26P
FFC 16P