User Check - Page 217

Brother DCP7020 User Manual

2014 Dodge Charger SRT Owner Manual

Table of Contents

ALLFB SERVICE MANUAL
TABLE OF CONTENTS
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Confidential

 

9-29

 

I-2 

Dark 

 

 

User Check 

(1)  Check the paper used meets the recommended paper specifications. 
(2)  Check the printer’s environment.  High temperature and high humidity 

conditions can increase the amount of background shading. 

(3)  Clean the corona wire with the wire cleaner. 
(4)  Try installing a new toner cartridge or drum unit. 

 

Possible cause 

Step

Check 

Result

Remedy 

Ground 

contacts 

Corona failure 
(contact 
failure) 

Are the charge electrodes 
between the printer body 
and the drum unit dirty? 

Yes  Clean both electrodes. 

(3) 

Drum unit 
failure 

Is the problem solved after 
replacing the drum unit? 

Yes  Replace the drum unit 

with a new one. 

 

Toner 
cartridge 
failure 

Is the problem solved after 
replacing the toner 
cartridge? 

Yes  Replace the toner 

cartridge with a new 
one. 

 

High-voltage 
power supply 
PCB failure

 

Is the connections of the 
connector between the 
high-voltage power supply 
PCB and the main PCB 
secured correctly? 

Yes  Replace the high-

voltage power supply 
PCB. 

 

Main PCB 
failure

 

Are there any disconnected 
connectors? 

No 

Replace the main PCB. 

 

 

Detailed Information for Brother DCP7020 User Manual

FAQ (Frequently Asked Questions) for Brother DCP7020 User Manual - Page 217

  • Possible cause Step Check Result Remedy Ground contacts Corona failure (contact failure) 1 Are the charge electrodes between the printer body and the drum unit dirty?
  • (3) Drum unit failure 2 Is the problem solved after replacing the drum unit?
  • Toner cartridge failure 3 Is the problem solved after replacing the toner cartridge?
  • High-voltage power supply PCB failure 4 Is the connections of the connector between the high-voltage power supply PCB and the main PCB secured correctly?
  • Main PCB failure 5 Are there any disconnected connectors?

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