Confidential
9 -4 1
I-16 Black
spots
User Check
(1) If the problem is not solved after printing a few pages, the drum unit may
have glue from label stock on the exposure drum surface. Refer to Step 1
in the table below and
NOTE
in the next page.
(2) The drum unit may be damaged. Install a new drum unit.
Possible cause
Step
Check
Result
Remedy
Ground
contacts
Drum unit
1
Are the spots at 74mm
intervals?
(The problem is not solved
after printing a few pages.)
Yes
1) If toner or glue
remains stuck, wipe it
off gently with a
cotton swab. (Refer
to
NOTE
in the
previous page.)
2) If the exposure drum
is scratched or
deteriorated
(exposed), replace the
drum unit.
Drum
connection
failure
2
Is the contact between the
drum unit and printer body
connected correctly?
No
Clean contact electrode
both on the drum unit
and in the printer body.
(7)
Fixing unit
3
Are the spots at 79mm
intervals?
(The problem is not solved
after printing a few pages.)
Yes
1) Check and clean the
heat roller with a
cloth dampened with
alcohol.
2) Replace the fixing
unit.
High-voltage
power supply
PCB failure
4
Is the problem solved after
replacing the high-voltage
power supply PCB?
Yes
Replace the high-
voltage power supply
PCB.
Содержание DCP-7010
Страница 1: ...Confidential FACSIMILE EQUIPMENT SERVICE MANUAL MODELS MFC7420 7820N DCP7010 7020 7025 ...
Страница 14: ...Confidential CHAPTER 1 PARTS NAMES FUNCTIONS ...
Страница 20: ...Confidential CHAPTER 2 SPECIFICATIONS ...
Страница 44: ...Confidential CHAPTER 3 THEORY OF OPERATION ...
Страница 64: ......
Страница 65: ...Confidential CHAPTER 4 TRANSFER OF DATA LEFT IN THE MACHINE TO BE SENT FOR REPAIR ...
Страница 68: ...Confidential 4 2 Cover page sample End page sample ...
Страница 69: ...Confidential CHAPTER 5 DISASSEMBLY REASSEMBLY AND LUBRICATION ...
Страница 150: ...Confidential CHAPTER 6 ADJUSTMENTS AND UPDATING OF SETTINGS REQUIRED AFTER PARTS REPLACEMENT ...
Страница 154: ...Confidential CHAPTER 7 CLEANING ...
Страница 156: ...Confidential CHAPTER 8 MAINTENANCE MODE ...
Страница 164: ...8 7 Confidential Scanning Compensation Data List a b c d e f g h i j k l m n q ...
Страница 172: ...8 15 Confidential Configuration List ...
Страница 178: ...8 21 Confidential Cover page sample End page sample ...
Страница 187: ...Confidential CHAPTER 9 ERROR INDICATION AND TROUBLESHOOTING ...
Страница 321: ...A NCU PCB MFC7420 U S A and CANADA models Confidential ...
Страница 322: ...A NCU PCB MFC7820N U S A and CANADA models Confidential ...
Страница 323: ...A NCU PCB MFC7420 EUROPE models Confidential ...
Страница 324: ...A NCU PCB MFC7820N EUROPE models Confidential ...
Страница 325: ...B Power Supply PCB 100V U S A and CANADA models Confidential ...
Страница 326: ...B Power Supply PCB 200V EUROPE models Confidential ...
Страница 327: ...December 04 SM FAX036 2 8C5A03 Printed in Japan ...