Sanyo DSR-300P Service Manual page 34

K
J
I
H
IC239
74LCX32
G
1 VCC 14
2 13
WAIT1 3 12
4 11 IREQ1
5 10
6 9
7 GND 8 WP1
F
IC240
74LCX32
1 VCC 14
2 13
3 12
4 11 CD1
5 10
6 9
E
R2396
7 GND 8
0
D
C
B
78 177 176 175 174 173 172 171 170 169 168 167 166 165 164 163 162 161 160 159 158 157 156 155 154 153 152 151 150 149 148 147 146 145 144 143 142 141 140 139 138 137 136 135 134 133 132 131 130 129
A
1 2 3 4
AL3.3V
TO CT-1(OPTION BOARD)CN653
TO DM-C
C2494
0.1;F
VDD25 128
5 6 7 8
CD-1 BOARD (DM-B) ASIC [UPPER RIGHT]
9 10 11 12
C11
HDD SOCKET
IC250
NC7W04
1 6
2 GND VCC 5
R2851
0
3 4
1K
R2940 L2401
10;K
AL5V
AL3.3V
L2402
10;K
IC249
74LCX32
1 VCC 14
HDD_GATE 2 13
3 12
4 11
IEN 5 10
6 9
7 GND 8
IC245
*
74LCX245
Q2403
1 T/R VCC 20
IRDY 2 A0 OE 19
R2442 33
IMARQ 3 A1 B0 18 IDRDY
R2443 33
INTRQ 4 A2 B1 17 IDMARQ
R2444 33
5 A3 B2 16 DINTRQ
6 A4 B3 15
7 A5 B4 14
8 A6 B5 13
R2852
9 A7 B6 12 470K
10 GND B7 11
Q2402
BIDIR BUFFER
13 14 15 16
K
J
I
H
C2411 C2413
10;16 IC241 10;16
74LVX3245
C2412 C2414
0.1;F 0.1;F
1 3.3V 5V 24
G
IDIR 2 T/R NC 23
ID11 3 A0 OE 22
R2411 33
ID10 4 A1 B0 21 IDD11
R2412 33
ID9 5 A2 B1 20 IDD10
R2413 33
ID8 6 A3 B2 19 IDD9
R2414 33
ID7 7 A4 B3 18 IDD8
R2415 33
ID6 8 A5 B4 17 IDD7
R2416 33
ID5 9 A6 B5 16 IDD6
R2417 33
ID4 10 A7 B6 15 IDD5
R2418 33
11 GND B7 14 IDD4
F
12 GND GND 13
BUFFER
BUFFER
IC242
74LVX3245
E
1 3.3V 5V 24
IDIR 2 T/R NC 23
ID3 3 A0 OE 22
R2421 33
ID12 4 A1 B0 21 IDD3
R2422 33
ID2 5 A2 B1 20 IDD12
R2423 33
ID13 6 A3 B2 19 IDD2
R2424 33
ID1 7 A4 B3 18 IDD13
R2425 33
ID14 8 A5 B4 17 IDD1
R2426 33
ID0 9 A6 B5 16 IDD14
R2427 33
ID15 10 A7 B6 15 IDD0 D
R2428 33
11 GND B7 14 IDD15
12 GND GND 13
IC243
C
74LCX245
1 T/R VCC 20
ICS1 2 A0 OE 19
R2431 33
ICS0 3 A1 B0 18 IDCS1
R2432 33
IA2 4 A2 B1 17 IDCS0
R2433 33
IA0 5 A3 B2 16 IDA2
R2434 33
IA1 6 A4 B3 15 IDA0
R2435 33
7 A5 B4 14 IDA1
8 A6 B5 13
B
9 A7 B6 12
10 GND B7 11
BIDIR BUFFER
C2432
IC244 10;16
74LCX245 A
C2433
0.1;F
1 T/R VCC 20
17 18 19