2. MAJOR UNIT REPLACEMENT
EO18-33011
2.6 REPLACING THE I/O PC BOARD
2- 8
Fig. 2-12
2.6 REPLACING THE I/O PC BOARD
1) Remove the side cover from the printer. (Refer to Section 2.2.)
2) Disconnect the all harnesses from the I/O PC board. (CN1, 3, 5, 7 to 9, 11, 13 to 16, 200)
3) Remove the four SMW-3x6 screws to detach the I/O PC board from the printer.
4) After replacing the I/O PC board with a new one, reassemble the printer in the reverse order of
removal.
NOTES: 1. Make sure the DIP switch provided on the I/O PC board is set properly. If not, refer to the
following table and change the settings.
No.
Status Function
Remarks
OFF B-492L
type
1
ON B-492R
type
Selection between L type and R type. See CAUTION
below.
OFF Standard
specifications
2
ON
In-line specifications
Specification of the Expansion I/O PC Board
(Timing of the input/output signals)
OFF
3
ON
Not used.
2. Changed settings of the DIP switch are stored into the memory when the power is turned
on or the printer is reset.
5) Refer to the following page and perform a ribbon sensor adjustment.
SMW-3x6 Screw
I/O PC Board
CAUTION!
If Switch No. 1 is set to the wrong status, the ribbon motors and the stepping motors will
rotate in the reverse direction.
GND (Frame Plate)