Apocalypse
Edo Express Delivery Guy
- Joined
- Sep 16, 2015
- Posts
- 331
I'm trying to fix a PGM IGS board which has an extreme battery leakage.
Unfortunately few info is available online.
For instance my board is stuck on a green/yellowish garbage screen and I'm not sure of the behaviour the board should have if for example the backup RAMs are unwritable/unreadable (broken traces).
I will try to detail connections between ICs:
U2
LP61256FS-15
32K * 8 BIT HIGH SPEED CMOS RAM
1 A14 U6 102
2 A12 U6 100
3 A7 U6 95
4 A6 U6 94
5 A5 U6 93
6 A4 U6 92
7 A3 U6 91U2
8 A2 U6 90
9 A1 U6 89
10 A0 U6 88
11 I/O0 U6 103
12 I/O1 U6 104
13 I/O2 U6 105
14 GND
15 I/O3 U6 106
16 I/O4 U6 110
17 I/O5 U6 111
18 I/O6 U6 112
19 I/O7 U6 113
20 /CE U7 16
21 A10 U6 98
22 /OE U6 87
23 A11 U6 99
24 A9 U6 97
25 A8 U6 96
26 A13 U6 101
27 /WE U6 86
28 VCC
U3
LP61256FS-15
32K * 8 BIT HIGH SPEED CMOS RAM
1 A14 U6 102
2 A12 U6 100
3 A7 U6 95
4 A6 U6 94
5 A5 U6 93
6 A4 U6 92
7 A3 U6 91
8 A2 U6 90
9 A1 U6 89
10 A0 U6 88
11 I/O0 U6 114
12 I/O1 U6 115
13 I/O2 U6 116
14 GND
15 I/O3 U6 117
16 I/O4 U6 118
17 I/O5 U6 119
18 I/O6 U6 120
19 I/O7 U6 121
20 /CE U7 15
21 A10 U6 98
22 /OE U6 87
23 A11 U6 99
24 A9 U6 97
25 A8 U6 96
26 A13 U6 101
27 /WE U6 86
28 VCC
To be continued...
Unfortunately few info is available online.
For instance my board is stuck on a green/yellowish garbage screen and I'm not sure of the behaviour the board should have if for example the backup RAMs are unwritable/unreadable (broken traces).
I will try to detail connections between ICs:
U2
LP61256FS-15
32K * 8 BIT HIGH SPEED CMOS RAM
1 A14 U6 102
2 A12 U6 100
3 A7 U6 95
4 A6 U6 94
5 A5 U6 93
6 A4 U6 92
7 A3 U6 91U2
8 A2 U6 90
9 A1 U6 89
10 A0 U6 88
11 I/O0 U6 103
12 I/O1 U6 104
13 I/O2 U6 105
14 GND
15 I/O3 U6 106
16 I/O4 U6 110
17 I/O5 U6 111
18 I/O6 U6 112
19 I/O7 U6 113
20 /CE U7 16
21 A10 U6 98
22 /OE U6 87
23 A11 U6 99
24 A9 U6 97
25 A8 U6 96
26 A13 U6 101
27 /WE U6 86
28 VCC
U3
LP61256FS-15
32K * 8 BIT HIGH SPEED CMOS RAM
1 A14 U6 102
2 A12 U6 100
3 A7 U6 95
4 A6 U6 94
5 A5 U6 93
6 A4 U6 92
7 A3 U6 91
8 A2 U6 90
9 A1 U6 89
10 A0 U6 88
11 I/O0 U6 114
12 I/O1 U6 115
13 I/O2 U6 116
14 GND
15 I/O3 U6 117
16 I/O4 U6 118
17 I/O5 U6 119
18 I/O6 U6 120
19 I/O7 U6 121
20 /CE U7 15
21 A10 U6 98
22 /OE U6 87
23 A11 U6 99
24 A9 U6 97
25 A8 U6 96
26 A13 U6 101
27 /WE U6 86
28 VCC
To be continued...
Last edited: