37
②
Program ROM : This ROM contains essential programs for operating the sewing machine and is installed as a default.
But it should be replaced or updated for adding or changing functions.
(2) Location of ROM Installation and Precautions
■
Sticker : 4-digits.
Ex) b005, b006, b
□
07...
PROGRAM-ROM
Sticker
1) Make sure the power is OFF and the screen is blank before installing/replacing ROM.
2) Wrong mark of direction may damage ROM.
3) Make sure the pin is installed accurately on the socket.
4) When removing the existing ROM, be careful not to damage the board by using IC
removing device or small (–) shape screw.
Caution
<ROM Type and Installation Location >
Name Type
Display on digital board
Direct
PDA
PDA
ROM type
No. of pins
Scalable pattern ROM
Program ROM
E
E
28C010
27C010
32
32
U7
U6
Location of ROM installation
Direction Marking
Must Mount that the
direction marking
comes to the left
<Position of Rom on
the digital board and
exchanging>
< Loosen two
screws for fixing the
front cover of the
control box and
disassemble the
digital board by
pulling its handle.>
Program ROM
Pattern stored ROM
Position