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6. THE FUNCTION OF MICRO-COMPUTER (MAL-WARNING VOICE)
CPU be1ng used in this machine i s supervising the k1nd of selected pattern. position of presser foot. feed dog and
buttonhole lever. state of bobbin-winding. Start/stop switch. reverse switch.
machine erroneously. the error 1s pointed out by mal-warning vo1ce.
The output of voice made by voice synthetic system is PARCOR way which cons1sts of 2 pes. of P-MOS LSI. One i s mask
ROM which stores information digitally analysed for the output voice. of which memory capacity is 1 28K
1s acting synthesiS of the voice according to the information from former ROM and CPU output. The mal-warning voice
contains 1 0 messages i n total which are as follows:
1 .
Please lower presser foot lever.
2
.
Please change position of red knob to right to raise feed
3.
Please change position of red knob t o left to lower feed dog.
4.
Please lower blue lever.
5 .
Please raise blue lever.
6 .
Reverse stitch cannot be obtained using this pattern.
7.
Memory capacity full. Please check instructton book.
8. Please check instruction book.
9 . Th1s pattern combination is not acceptable. Refer to instruction
1 0 .
Please use a foot
controller.
etc.
dog.
book.
5
-
-
If the customer operates the
bit.
The other
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