Eraser Lamp Control Circuit - Kyocera FS-1030D Service Manual

(1) Eraser lamp control circuit

The CPU (U1) turns pin #23 (ERASER) of U1 to H level, transistors (Q14) turns on consequently, and the 24 V DC given at
pin #1 of connector YC5 applies to the eraser lamps. The eraser lamps thus illuminate as the current flows through the
resistors (R109, R110, and R111), eraser lamp, the pin #2 of connector YC5, transistor Q14 and the ground.
CPU
U1
P25/ASCK0
Engine PWB
ERASER
23
Figure 2-3-3 Eraser lamp control circuit
Eraser lamp control circuit
+24V3
R69 R70
3
2
Q14
1
GND
Eraser lamp
YC14
R71
ERASPW
1
2
ERASER
3
PGND
2G6
2-3-3