TTP-248M Bar Code Printer
Service Manual
3.15 PIN Switch Circuits
JP28 |
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| 1 | JP3/9 |
| 2 | |
| JP3/1 | |
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2PIN |
| 開關 |
Fig. 3.18 LTC490 and RS232 pin switch
VCC
U1/7
R95
10 K
JP27
2
1
GND 2PIN
Fig. 3.19 Download boot program to on-board Flash memory pin switch
3.16 Connector Circuits
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| VCC | |||
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| 1 | |
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| 2 |
| GND |
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TCK |
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| 3 | ||||
TDO | 4 | |
5 | ||
TDI | ||
6 | ||
TMS | ||
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Fig. 3.20 JTAG Circuit
JP1
JP1
JTAG
36