Kyocera FS-1010 service manual Laser scanner unit Pin photo diode error, Call service 4200nnnnnn

(3) 4200 - Laser scanner unit [Pin photo diode] error

Call service 4200:nnnnnn

+5 V DC at pin 6 of YC07 on main board (KP-888) ?

Yes

Connect oscilloscope to pin 4 (OUTPEN) of YC07 on main board (KP-888).

Turn power switch off, then on.

Does

pin 4 (OUTPEN) of YC06 on main board (KP-

888)goes high, then low before "4200"

error?

Yes

Connect oscilloscope to pin 4 (OUTPEN) and pin 8 (PDN) of YC07 on main board (KP-888).

Turn power switch off, then on.

Printer indicators

No

Replace main board (KP-888). See page 5-12.

Replace main board (KP-888). See page 5-12.

		Turn power switch on.					Replace engine board
							(KP-882). See page 5-11.
					No
No		OK?
							Turn power switch on.
				Yes
									No
		End.					OK?
									Yes
							End.
								Replace harness (S02770)
								between main board and
				Does pin 8				engine board.
			(PDN) of YC06 on
		main board (KP-888) output					Yes
		pulse signal*, within 0.1 second
		after pin 4 (OUTPEN) goes
				high, then
	*: Pin photo diode				low?
	detect horizontal					No
	synchronization signal
	(Frequency: 1417 Hz,
	Low level width: 10 ∝s)

BC

Continued	Continued
to next page.	to next page.

FS-1010

6-13