Canon PC400 Service Manual - Page 38
E. Inputs to DC Controller, E
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CHAPTER 2 BASIC OPERATION E. Inputs to DC Controller 1. Inputs to DC Controller (1/2) DC controller/DC power supply PCB AC power supply Door switch SW1 Delivery door switch SW2 J104 J103 Density correction switch (PC420/430/ FC220) SW606 0 1 2 (bottom: lightens) (top: darkens) J601 -20(-15) J601 -2 J601 -1 SW601 ( ) SW602 J601 (+ ) -19 SW603 J601 (C/S) -15 SW605 (AE) J202 -3 J202 DGT 2 Oscillation signal (output) -21 J202 KEYR 2 Press on any key or density correction switch allows input -22 KEYR 3 of oscillation signal. (PC420/430/FC220 only) J202 -4 DGT 0 J202 -8 DGT 1 Oscillation signal (output; PC420/430/FC220 only) Power switch Density adjustment dial/lever SW604 +5V +5V VR601 J601 -14(-10) J601 -21(-16) J601-13(-8) J601-22(-17) J202 -9(-8) PWSON When '0', power switch goes ON. J202 -2 J202-10 J202-1 5V Turning density adjustment dial varies voltage. (turn to darken brings it closer to 0V) Control panel PCB Note: The pin No. in parentheses refers to the PC400/FC200. Figure 2-101E 2-6 COPYRIGHT © 1998 CANON INC. CANON PC400/420/430,FC200/220 REV.0 JAN.1998 PRINTED IN JAPAN (IMPRIME AU JAPON)