Epson SEIJ98006 27. ASF Solenoid does not Operate, 28. ASF Solenoid does not Operate continued

EPSON Stylus Color 900 Revision C

Table 3-27. ASF Solenoid does not Operate

Step	Check Point		Action
1	Is the fuse (F4)	Place the probes of the tester on the both terminals of
	open?	the chip fuse on the C265 Main board, then check for
		electrical continuity. The F4 is located between CN12
		and CN16 and also beside the Q9.
2	Is the transistor	Place the probe of the oscillo scope on the collector side
	(Q8) defective?	of the transistor Q8 on the C265 Main board, then check
		that 40 VDC is constantly applied. Then press the Load/
		Eject button and check if the voltage drops to 0 VDC for
		an instant. If it does, it means the Q8 is working properly.
		The Q8 is located between CN12 and CN16.
			Q 8

2 0 V∝ 2 0

2 0 V∝ 2 0

Table 3-28. ASF Solenoid does not Operate (continued)

Step	Check Point			Action
3	Is the transistor	Place the probe of the oscillo scope on the emittor side of
	(Q9) defective? the transistor Q9 on the C265 Main board, then check
		that voltage is always 0 VDC. Then press the Load/Eject
		button and check for an instant change in voltage level
		from 0 to 40 VDC. if it changes correctly as described
		above, it means the Q9 is working properly. The Q9 is
		located beside the CN16.
			+Q 9

2 0 V∝ 2 0

2 0 V∝ 2 0

4	Is the C265	If the cause has not been isolated yet in the previous
	Main board	steps, replace the C265 Main board.
	defective?

Troubleshooting Overview 95