TTP-248M Bar Code Printer

Service Manual

3.15 PIN Switch Circuits

JP28

 

 

 

1

JP3/9

 

2

 

JP3/1

 

 

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

 

 

 

 

 

VCC

 

 

 

 

 

 

 

1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

2

 

GND

 

 

 

TCK

 

 

 

3

TDO

4

5

TDI

6

TMS

 

Fig. 3.20 JTAG Circuit

JP1

JP1

JTAG

36

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Image 39
The Speaker Company TTP 248M service manual TTP-248M Bar Code Printer PIN Switch Circuits, Connector Circuits