Sanyo AVD-8501, Service Manual

Page: 7 / 110

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DVD P.W.BOARD OPERATION
2. Circuit configuration inside IC100 (LA9702W) and IC200 (LC78661W).
(This is a basic circuit configuration diagram)
1
2
3
4
5
6
7
8
9
10
11
14
13
16
15
79
72
70
76 61 68 63 59 53 27
18
19
20
21
22
23
24
35
34
33
32
31
30
29
1
2
10
14
7
6
13
9
8
5
28
29
32
45
41
40
46
44
42 12
18
16
206
44
26
154
134
136
28
39
27
38
37
36
201 205 25
11
30
51 57
XHTRC
DEFECT0 RFP1
TH
TESBIAS
HFLBIAS
HFLBIAS
TESBIAS
TES
HFL
PCK
PCK
JV
JITTER
DETECTION
CIRCUIT
SLCBIAS
LDO1
LDS1
LDO2
LDS2
SLC
SLCBIAS
EFMINP
EFMINN
DEFECTI
HFLIO
RF-PH
RF-BH
AD5/BH
AD2
AD1
TE
AD4/TE
AD3
FE
AD0
TESIO
EFMOUT
EFM,EFM+
EFM+
EFM
DEFECT
FE,TE,PH,BH,RPEC,
JV,BCA,WO
DEGITAL.
CLK
COUNTER
FDO
TDO
SPDO
SLDO
CPOF
VREF
SLCBIAS
SGC
OFSET
BCA
BOOT3T
RFVCA
TBAL
FBAL
D/A
8bit
11ch
+3ch
D/A
8bit
10ch
TES
WO-CNT
HFL
TRACK
COUNTER
DEGITAL.
OFSET,BCA,BOOT3T,
RFVCA,TBAL,FBAL,
SGC,HFLBIAS,TESBIAS,
FDO,TDO,SPDO,SLDO,
SLCBTAS.
RFPI
RFOP
RFON
DEF
PH
BH
BCA
TE
WO
FE
RREC
TOST
FOST
BST
VGA
TEBL
FEBL
SGC
SERVO
VREFS
VREFS
TH CPOF XHTRC DPD/TE XQBH PP/TE EQSCT RFSCT
VREFP
LDON1
LDON2
PICK
APC1
RR 1
B
FE 1
FE 2
RR 2
APC2
VREFP1
MTX
A
D
C
C
A
DVD
PU
DVD
PU
B
F
E
DPD
2C+A+B
3-BEAM
PUSH-PULL
REN
REP
LPF
BCA TH
DEFECT
PEAK HOLD
BOTOM HOLD
TE HOLD
LPF2 LPF1
BPF
DPD: PHASE A,B,C,D
3-BEAM: F~E
PUSH-PULL: (B+C)-(A+D)
FE1: (B+D)-(A+C)
FE2: A-B
RR1: A+B+C+D
RR2: A+C+B
TE
FE
RREC
RFSCT
CD-3T
BOOST
DPD / TE
VGA
BST
DPD / TE
EQ2
EQ1
EQSCT
CPOF OR TH DPD / TE
VREF
XHTRC
XHTRC
PP / TE
TOST
FOST
TE
FE SGC
SGC
SGC
RFSCT
RFSCT
TH
BCATH
CD
PU
MI-COM
PORT
MI-COM PORT DSP CONTROL
to
DRIVE
IC
LA9702W(AMP) LC78661W(DSP)
IC100
IC200
Name TP label
IC, CN
Location
Pin no. Description Name TP label
IC, CN
Location
Pin no. Description
FE TP101 IC100 25 Focus Error Signal(Analog) TD TP601 IC200 38 Tracking Driver out(analog)
TE TP102 IC100 30 Tracking Error Signal(Analog) FD TP602 IC200 39 Focus Driver out(analog)
RFN TP104 IC100 40 RF Signal(Analog) SPD-FG TP604 IC602 24 Spindle FG signal
RFP TP105 IC100 41 RF Signal(Analog) W TP621 ------ ------
BH TP106 IC100 42 Bottom Hold Signal(Analog) V TP620 ------ ------
PH TP107 IC100 44 Peak Hold Signal(Analog) U TP611 ------ ------
DEF TP230 IC100 46 High : When passing defection H+ TP619 ------ ------
LD1 TP122 Q1004 E DVD Laser Power Supply(Analog) U+ TP618 ------ ------
LD2 TP124 Q1005 E CD Laser Power Supply(analog) U- TP617 ------ ------
TESI0 TP201 IC200 2 TES(Track crossing signal) V+ TP616 ------ ------
HFLBIAS TP204 IC200 28 MIRROR Slice Bias(Analog) V- TP615 ------ ------
HFLIO TP206 IC200 44 MIRROR signal W+ TP614 ------ ------
FSEQ TP211 IC200 84
High : Sync synchronised
LO : Async
W- TP613 ------ ------
EFMOUT TP226 IC200 134 RF Digitized signal H- TP612 ------ ------
DEFECT0 TP229 IC200 201 High : When passing defection SLD TP607 IC200 36 Sled Driver out(analog)
TOST TP246 IC200 29 Tracking Offset Control(analog) SPD TP608 IC200 37 Spindle Driver out(analog)
FOST TP247 IC200 30 Focus Offset Control(analog) OPEN ------ IC601 16 TRAY control signal
BOOST3T TP248 IC200 31 RF EQ Control(analog) CLOSE ------ IC601 15 TRAY control signal
RFVCA TP249 IC200 32 RF Voltage Control(analog) OPEN-SW TP627 CN600 5 TRAY Limit SW
TBAL TP250 IC200 33 Tracking Balance Control(analog) CLOSE-SW TP626 CN600 3 TRAY Limit SW
FBAL TP251 IC200 34 Focus Balance Control(analog) HRST TP700 CN500 2 RESET from Backend
SGC TP252 IC200 35 Signal Gain Control(anlog) RESET ------ IC502 6 RESET to Micom
HFBUSYB TP254 IC200 50
Function Busy Low during jump,
adjustment so on.
VREF ------ IC100 27, 79 Reference Voltage(2.5V)
JVAO TP257 IC200 154 Jitters value(analog)
Spindle Hall Voltage
Spindle Coil Voltage