Kyocera FS-1010 service manual Laser scanner unit Polygon motor error, Call service 4000nnnnnn

(2) 4000 - Laser scanner unit [Polygon motor] error

Call service 4000:nnnnnn

+24 V DC at pin 5 of

YC06 on engine board

(KP-882) ?

Yes

No

Printer indicators

Replace engine board (KP-882). See page 5-11.

Connect oscilloscope to pin 1 (PLGCLK) and pin 3 (PLGDRN) of YC06 on engine board (KP-882).

Turn power switch off, then on.

Does

pin 3 (PLGDRN) of

YC06 on engine board

(KP-882) goes high,

then low?

No

Replace engine board (KP-882). See page 5-11.

Turn power switch on.

No

OK?

Yes

End.

Replace laser scanner unit. See page 5-29.

Turn power switch on.

No

OK?

Yes

End.

Yes

Does

pin 1 (PLGCLK) of YC06 on engine board (KP-882) output square-wave*

signal?

Yes

Connect oscilloscope to pin 2 (PLGRDYN) and pin 3 (PLGDRN) of YC06 on engine board (KP-882).

Turn power switch off, then on.

No

*: 1417 Hz (705 ∝s)

A

Continued to next page.

Replace harness (S02779) between engine bard and

laser scanner unit.

Does pin 2

(PLGRDYN) of YC6 on

engine board (KP-882) goesYes high, then low, within 8 seconds

after pin 3 (PLGDRN)

goes high, then low?

No	Replace engine board
	(KP-882). See page 5-11.

Replace laser scanner unit. See page 5-29.

Turn power switch on.

OK?		No
	Yes
		Replace harness (S02779)
		between engine bard and
End.		laser scanner unit.

FS-1010

6-11