Epson EPL-6200L service manual High voltage circuit problem, Troubleshooting for Laser problem

EPSON EPL-6200/EPL-6200L Revision A

3.2.4 Laser problem

†Any of the following conditions is handled as a laser problem:

„When the laser output exceeded the upper limit.

„The laser output dropped below the lower limit.

Table 3-7. Troubleshooting for “Laser problem”

Step	Action and Question	Yes	No
	Parts below can be the source of this error (Chapter 4 Disassembly and Assembly)
	• PH Unit (p.154)
	• FFC
	• Main Board Assy (C533/C534 Main) (p.146)
	Connection with connectors
1	Check the connection of the cable, and correct it if	Problem	Go to Step 2
	any problem is found.	solved
	♦Has the error been cleared?
2	PH unit	Replace the
	Replace the PH unit.		Go to Step 3
		PH unit.
	♦Has the error been cleared?
3	Main Board Assy.	Replace the	Go to “3.4.2
	Replace the Main Board Assy.	Main Board	Electrical
	♦Has the error been cleared?	Assy.	Noise” (p.120)

3.2.5 High voltage circuit problem

†Any of the following conditions is handled as a high voltage circuit problem:

„The charging monitor voltage (HVC_MON) signal was detected to be out of the predetermined limits after passage of the predetermined period of time from power on.

„The transfer voltage monitor signal (T_MON_V) or the transfer current monitor signal (T_MON_I) was detected to be out of the predetermined limits.

Table 3-8. Troubleshooting for “High voltage circuit problem”

Step Action and Question Yes No

Parts below can be the source of this error (Chapter 4 Disassembly and Assembly)

•Fuser Unit (p.152)

•Main Board Assy (C533/C534 Main) (p.146)

1	Fuser unit	Replace the
	Replace the fuser unit.		Go to Step 2
		fuser unit.
	♦Has the error been cleared?

2	Main Board Assy.	Replace the	Go to “3.4.2
	Replace the Main Board Assy.
		Main Board	Electrical
	♦Has the error been cleared?	Assy.	Noise” (p.120)

Troubleshooting Troubleshooting When There is Error Display 109