Brother International MD-817 Service Manual - Page 78

BLOCK DIAGRAM OF CONTROL CIRCUIT 7.40 MD-806(1 PHASE) REV. SOL. -816(3 PHASE) 5. on W IP. SOL TRIM. SOL. e 6. 7n PRE. SOL. 9. 5n EARTH 'EARTH KNEE SW. BRAKE SOL. 5. 30 2 TREADLE UNI 1e4/C,ND) CNI C:f1:1-1 i )(.2) : 20 : :1 a GREEN YE9LL re3i IA )qq,E CNC OS® 000 CNE 00 • 0 n0 9 4W cN2 00 CN1 . CN9 CNB ORA GE BL vOR ET VC OBV NOSY M m Z 0 ≤ m o0 < od CNB 0 C eomm CN4 CN7 ETT. gg=til . '4O too2H 10900 0 00CM CN5 CONTROL PC8. CN10 3 2 0 0 0 0 0 0 0 0 0 0 20 0 0 0 0 0 0 0 0 0 0 19 F. I b000d CN6 CNA O STOP REV TRIM 24PuLSE NLoR REAR FRONT OP z -Isv P. COUNT PAP P. CHANGE OY BA FUSE r .... EA cos CNC 1 BRAKE( E2) PRESSER(E2) VR IN 2 BRAKE SOL.KNEE SW VR OUT 3 OPTION VR OBV 4 \ PRE. 501. VR On 5 OR 5 EARTH CND HIGH SP. LOW SP. OW P1SV V., 05W NO CNE 1 2 3 EARTH 4 TRIM. (U) 5 TRIM. SOL. 6 7 WIPER(E2) B WIPER SOL. 9 REV. SW 10 REV. SC U) 11 REV. SO L. 12 OV CNF Vt TN VT TN If TH M. + Vt CNO EARTH AC V AC V AC V CH9 EARTH 5V HI. ON OW NONP. EARTH NL. UP ENC N U cLU) EARTH CL (Tr- () 11.1 - O- O 0. vg) BLACK BLACK M .BLACK 6 3 BLUE COIL 5 2 4 TH YELLOW YELLOW 6od00000 C) i f 45 CNG 6 Cl CNF POWER PCB. AC 0 0 - The connector indlcated by the broken l ines Is 3ohase specification. O f5 10 AW MY 1141 OO W w -1 m M 02 2 2 0 O0 TRANSFORMER No CN10 CNN 1 SV 11 SEG3 TRIM. SW 2 SENSOR 12 SEGOFF OV 3 E2 13 SWLEOO 4 DIGITO 14 SWLEDI 5 DIGIT! 15 KEYO 6 DIGIT2 18 KEY1 7 worts 17 KEY2 B SEGO _1.8 BUZZER 9 SED1 19 OV 10 SEGE 20 POWER LEO CN I PRE. SW OV LAMP CODE 1) The connector Is shown from the pin side. 2) The section Indicated by broken l ines shows the inside of the control box.