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