Panasonic SA-VK81DGCS, Service Manual

Page: 70 / 154

20 Block Diagram
IC8271
C0GBF0000004
IC8251
C0GBG0000044
IC8051
C3ABPG000063
OPTICAL PICK UP UNIT
ACTUATOR
TRACKING
COIL
FOCUS
COIL
HALL3 HALL3 HALL3
TURNTABLE
R
FG PS EC ECR
24 23 22 21
72 79 76
2 4 7 9 10 11 12 13 14
MUTE3 MUTE12 LDCNT VIN3 VIN1 VIN2 OPIN+ BIAS1
9 23 2
75 147
18 17 11 12 13 14
27
83
3 4
148 128 81
2,4,5,7,8,
10,11,13,
42,44,45,
47,48,50,
51,53
22~26,
29~35
15,39
1,2,4,5,7,8,
10,11,13~15,
17,18,252,
254,256
217,220,
221,223,224,
226~228,
230,233,
237,238
249,251
MDQ0~MDQ15 MA0~MA1
1
DQM0,DQM1 BA0,BA1 NWE,NCAS,NRAS,NCSM MCK
MDQ0~MDQ15
MA0~MA1
1
LDQM,UDQM
BA0,BA1
NWE,NCAS,NRAS,NCSM
CLK
ACT
T
-
ACT
T+
ACT
F-
ACT
F+
A3 A2 A1
H1+
H1-
H2+
H2-
H3+
H3-
H-
VO3-
VO3+ VO2+
VO2-
VO1+
VO1-
FG
MUTE3
DR
V1
DR
V6
DR
V8
DR
V0
DAC1
PWM0
VHALF
AD1 AD2
VCOF/AD4
COIL_W
COIL_V COIL_U
HU+
HU-
HV+
HV
-
HW+
HW
-
H-
SW
FEED-
FEED+
15
1
24~26 LDIN,
BIAS2,
TRIN
140
20,21
234,232
16~19
248,245,
244,240
38
243
28
166 165
X8621
OSCO OSCI
139 146
MOTOR DRIVE IC
MOTOR DRIVE IC
64M SDRAM
IC8001
MN2DS0003APH
DV2.1 LSI
70
SA-VK81DGCS / SA-VK81DGCP