Dvd P.w.board Operation - Sanyo DWM-1000 Service Manual

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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)
IC, CN
Name
TP label
Location
FE
TP101
IC100
TE
TP102
IC100
RFN
TP104
IC100
RFP
TP105
IC100
BH
TP106
IC100
PH
TP107
IC100
DEF
TP230
IC100
LD1
TP122
Q1004
LD2
TP124
Q1005
TESI0
TP201
IC200
HFLBIAS
TP204
IC200
HFLIO
TP206
IC200
FSEQ
TP211
IC200
EFMOUT
TP226
IC200
DEFECT0
TP229
IC200
TOST
TP246
IC200
FOST
TP247
IC200
BOOST3T
TP248
IC200
RFVCA
TP249
IC200
TBAL
TP250
IC200
FBAL
TP251
IC200
SGC
TP252
IC200
HFBUSYB
TP254
IC200
JVAO
TP257
IC200
Pin no.
Description
25
Focus Error Signal(Analog)
30
Tracking Error Signal(Analog)
40
RF Signal(Analog)
41
RF Signal(Analog)
42
Bottom Hold Signal(Analog)
44
Peak Hold Signal(Analog)
46
High : When passing defection
E
DVD Laser Power Supply(Analog)
E
CD Laser Power Supply(analog)
2
TES(Track crossing signal)
28
MIRROR Slice Bias(Analog)
44
MIRROR signal
High : Sync synchronised
84
LO : Async
134
RF Digitized signal
201
High : When passing defection
29
Tracking Offset Control(analog)
30
Focus Offset Control(analog)
31
RF EQ Control(analog)
32
RF Voltage Control(analog)
33
Tracking Balance Control(analog) CLOSE-SW
34
Focus Balance Control(analog)
35
Signal Gain Control(anlog)
Function Busy Low during jump,
50
adjustment so on.
154
Jitters value(analog)
IC, CN
Name
TP label
Location
TD
TP601
IC200
FD
TP602
IC200
SPD-FG
TP604
IC602
W
TP621
------
V
TP620
------
U
TP611
------
H+
TP619
------
U+
TP618
------
U-
TP617
------
V+
TP616
------
V-
TP615
------
W+
TP614
------
W-
TP613
------
H-
TP612
------
SLD
TP607
IC200
SPD
TP608
IC200
OPEN
------
IC601
CLOSE
------
IC601
OPEN-SW
TP627
CN600
TP626
CN600
HRST
TP700
CN500
RESET
------
IC502
VREF
------
IC100
- 7 -
Pin no.
Description
38
Tracking Driver out(analog)
39
Focus Driver out(analog)
24
Spindle FG signal
------
------
Spindle Coil Voltage
------
------
------
------
------
Spindle Hall Voltage
------
------
------
------
36
Sled Driver out(analog)
37
Spindle Driver out(analog)
16
TRAY control signal
15
TRAY control signal
5
TRAY Limit SW
3
TRAY Limit SW
2
RESET from Backend
6
RESET to Micom
27, 79 Reference Voltage(2.5V)

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