Epson MX-85 User Manual - Page 17

Setting of jumpers, Note 2

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3.3. Setting of jumpers Your application may require the removal or installation of jumpers of the SMCT Board. Before continuing, consult Table 6 which outlines the function and factory-set condition of each jumper. In order to access the SMCT Board it is necessary to remove the SMDP Board. This is accomplished by: 1. Disconnecting the Mechanism Cable and the AC cable. 2. Removing the six (6) screws on the SMDP Board and the two (2) screws located in the heat sink on the right side of the board. 3. Lifting the Board from the rear center, in the connector area, to avoid damage. NOTE: Any changes in this area should be performed by an experienced technician. Jumper J1 J2 J3 J4 J5 J6 J7 J8 J9 J10 J11 J12 J13 J14 J15 J16 Table 6 Function and Conditions of Jumpers Not used ON RS-232C OFF Level Function OFF Current Loop ON Level Note 1 Both ON = Polar Both OFF = Neutral Not used Not used Current Loop (USA Version) Both are ON when not using RTS and CTS ON when using CTS ON when using RTS 80 mA Current Loop 60 mA Current Loop 40 mA Current Loop Note 2 20 mA Current Loop Factory-set OFF ON OFF OFF OFF OFF OFF ON ON ON OFF OFF OFF OFF OFF OFF Note 1: Select either J2 or J3. Do not connect both. Note 2: Select 1 only. Do not connect 2 or more. - 12-

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3.3. Setting of jumpers
Your application may require the removal or installation of jumpers of the SMCT
Board. Before continuing, consult Table 6 which outlines the function and factory-set
condition of each jumper.
In order to access the SMCT Board it is necessary to remove the SMDP Board. This is
accomplished by:
1. Disconnecting the Mechanism Cable and the AC cable.
2. Removing the six (6) screws on the SMDP Board and the two (2) screws located
in the heat sink on the right side of the board.
3. Lifting the Board from the rear center, in the connector area, to avoid damage.
NOTE:
Any changes in this area should be performed by an experienced technician.
Table 6
Function and Conditions of Jumpers
Jumper
Function
Factory-set
J1
Not used
OFF
J2
ON
RS-232C
OFF
Current Loop
ON
Note 1
J3
OFF
Level
ON
Level
OFF
J4
Both ON = Polar
OFF
J5
Both OFF = Neutral
OFF
J6
Not used
OFF
J7
Not used
OFF
J8
Current Loop (USA Version)
ON
J9
Both are ON when not
ON
J10
using RTS and CTS
ON
ON when using CTS
J11
J12
J13
J14
J15
J16
ON when using RTS
80 mA Current Loop
60 mA Current Loop
40 mA Current Loop
20 mA Current Loop
OFF
OFF
OFF
OFF
Note 2
OFF
OFF
Note 1:
Select either J2 or J3. Do not connect both.
Note 2:
Select
1 only. Do not connect 2 or more.
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