Brother International MD-817 Service Manual - Page 97
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C TIMING CHART OF OPERATION PANEL E-40 f. >3 2msEC DIGIT 0 DIGIT 1 DIGIT 2 I 1 DIGIT 3 IC1-1(0) "A" . B. IC1-2 (1) - IC1-3 (2) 1- 1. C IC1-4 (3) i ' D IC1-5 (4) 1 IC1-6 (5) lt IC1-7 (6) IC1-9 (7) IC1-10 (8) SEGOFF I i i I SW SW3 9N6 SN9 12 /4, 5 7. 8 71-0, 1i SW15 /1-6-.--17 EACH SWITCH SCAN i Sw12 SW SEG 0 SEG 1 SEG 2 - 7 - 1 Mi ll II SEG 3 IIII II FII I I I I I )IItPProx .170USEC I1I I IIII l I I SWLEDO LED No. 1 23 45 S£N TRIM LED LED SBT EBT LED LED 67 8 1 23 45 E SEN TRIM SBT EBT LED LED LED LED LED 6 7 8 E LED Remark: High level of signal, except (SWLEDO), is more than +3V, and low level is less than +05V. E-40 41rAI A.t„, lwio f iixl IA _fi l Lc D 0/ 41 SBTLED i TRIMLED i_oli 1/\L4fil[1q\7i 11/\4I /117311 /. 1O:7El,irAuirci BTLED JI E 1 - 93 -
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