KYOCERA FS-1010 User Manual download pdf (Page 76)

4-25

FS-1010

Polygon motor control circuit

The main controller board supplies the 1700.8 Hz clock pulse (PLGCLK) via the engine board to

the PLL control IC (IC1) for the polygon motor. To begin printing, the engine CPU U01 turns

PLGDR to H level, the PLL control IC (IC1) starts to revolve the polygon motor so that the revolution

is 17,008 rpm which depends on the PLGCLK clock pulse. When PLL control IC (IC1) finds that

the polygon motor is revolving at the rated speed, turns PLGDRN to L level to acknowledge the

engine CPU that the rated speed has been achieved.

On the contrary, if PLGRDYN does not turn to L level within 8 seconds since PLGDRN has been

L level, the LED indicator “Call service 4000” error is then displayed.

Figure 4-3-7 Polygon motor control circuit

GND

Q09

Q10

+5V

R35

R32

PGND

+24V

GND

R38

R41

C18

+24V

PGND

PLGDRN

PLGRDYN

PLGCLK

YC06

PLGRDYN

PLGCLK

PLGDR

CPU

U01

Polygon motor

PLL

control IC

(IC1)

1700.8 Hz

17,008 rpm

Engine board

Main board

Polygon motor control circuit

Laser scanner unit

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