BC-3500 Series - Rowe International
BC-3500 Series - Rowe International
BC-3500 Series - Rowe International
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Section 4: Troubleshooting<br />
R51<br />
220KΩ<br />
R57<br />
220KΩ<br />
R39<br />
R43<br />
220KΩ<br />
220KΩ<br />
R45<br />
220KΩ<br />
R47<br />
R55<br />
220KΩ<br />
220KΩ<br />
R66<br />
220KΩ<br />
R64<br />
R37<br />
220KΩ<br />
220KΩ<br />
R41<br />
220KΩ<br />
R49<br />
U1<br />
R53<br />
220KΩ<br />
30 VDC<br />
POINT<br />
TAIL<br />
40<br />
39<br />
220KΩ<br />
R68<br />
20<br />
POR<br />
21<br />
DATA<br />
22<br />
SCLK<br />
1<br />
VSS<br />
18<br />
VDD<br />
38<br />
SEG P<br />
37<br />
SEG O<br />
36<br />
SEG N<br />
SEG M 35<br />
34<br />
SEG L<br />
33<br />
SEG K<br />
32<br />
SEG J<br />
31<br />
SEG I<br />
30<br />
SEG H<br />
29<br />
SEG G<br />
28<br />
SEG F<br />
27<br />
SEG E<br />
26<br />
SEG D<br />
25<br />
SEG C<br />
24<br />
SEG B<br />
23<br />
SEG A<br />
DS1<br />
32 30 20 16 7 3 26 28 22 14 12 9 5 24<br />
11<br />
18<br />
220KΩ<br />
R70<br />
20KΩ<br />
R33<br />
330 OHM<br />
2W<br />
D4<br />
IN4734 - 5.6V<br />
DIGIT 1<br />
DIGIT 2<br />
DIGIT 3<br />
DIGIT 4<br />
DIGIT 5<br />
DIGIT 6<br />
DIGIT 7<br />
DIGIT 8<br />
DIGIT 9<br />
DIGIT 10<br />
DIGIT 11<br />
DIGIT 12<br />
DIGIT 13<br />
DIGIT 14<br />
DIGIT 15<br />
DIGIT 16<br />
17<br />
16<br />
15<br />
14<br />
13<br />
12<br />
11<br />
10<br />
9<br />
8<br />
7<br />
6<br />
5<br />
4<br />
3<br />
2<br />
R1<br />
330 OHM R2<br />
330 OHM R3<br />
2 4 6 8 10 13 15 17 19 21 23 25 27 29 31 33 1 34<br />
R40<br />
R36<br />
220KΩ<br />
R38<br />
220KΩ<br />
D3<br />
IN4735A - 6.2V<br />
R4<br />
330 OHM<br />
220KΩ<br />
R42<br />
10937P-50 or 10957P-50 Display Driver<br />
330 OHM R5<br />
220KΩ<br />
R44<br />
330 OHM R6<br />
R46<br />
220KΩ<br />
R7<br />
330 OHM<br />
220KΩ<br />
R48<br />
330 OHM R8<br />
220KΩ<br />
R50<br />
330 OHM R9<br />
R52<br />
220KΩ<br />
R10<br />
330 OHM<br />
220KΩ<br />
R54<br />
330 OHM R11<br />
220KΩ<br />
R56<br />
330 OHM R12<br />
R63<br />
220KΩ<br />
R13<br />
330 OHM<br />
220KΩ<br />
R65<br />
330 OHM R14<br />
220KΩ<br />
R67<br />
330 OHM R15<br />
R69<br />
220KΩ<br />
R16<br />
330 OHM<br />
220KΩ<br />
R71<br />
330 OHM<br />
220KΩ<br />
NOTE :<br />
R1 - R16, R36 - R57, AND R63 - R71<br />
ARE 1/8 WATT<br />
5 VDC<br />
C30<br />
.1 µF<br />
C22<br />
.1 µF<br />
C18<br />
.1 µF<br />
C7<br />
.1 µF<br />
C13<br />
.1 µF<br />
C11<br />
.1 µF<br />
C10<br />
.1 µF<br />
C9<br />
.1 µF<br />
C6<br />
.1 µF<br />
C4<br />
.1 µF<br />
C5<br />
.1 µF<br />
C8<br />
.1 µF<br />
C12<br />
.1 µF<br />
C14<br />
.1 µF<br />
Figure 4-5. Schematic Diagram - Computer Control Board (Sheet 2)<br />
25238801 4-89
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