Troubleshooting Items
Recurring faulty image
Overview
Foreign matters or lines on rollers along the paper feed path may cause faulty images in the vertical scanning direction.
Field Remedy
See the roller pitches listed in the tables below to clean and/or replace the corresponding parts.
CAUTION:
Since the Primary Charging Roller, Photosensitive Drum, and Developing Roller are located inside the cartridge and cannot
be cleaned, replace the cartridge.
Roller pitch
Parts
Approx. 44 mm
Registration Roller
Approx. 51 mm
Secondary Transfer Roller
Approx. 19 mm
Primary Charging Roller
Approx. 63 mm
Photosensitive Drum
Approx. 31 mm
Developing Roller
Approx. 57 mm
Fixing Roller
Approx. 57 mm
Pressure Firm
Confirming nip width
Overview
Although the nip width of the Fixing Assembly cannot be adjusted with this machine, it can be checked.
By checking the nip width when fixing failure occurs, it is possible to judge whether there is a problem with the Fixing Assembly.
Field Remedy
Check the nip width of the Fixing Assembly by the following procedure.
1. Print a solid black image on an A4/LTR size paper using the cartridge of this machine and bring it to the customer
site.
2. Load the solid black printed paper with its printing side facing down in a cassette of the machine.
3. Use an external device to print a solid white image.
4. Open the Front Cover after approx. 25 seconds, leave it for 10 seconds or more, and then take out the printed paper.
7. Troubleshooting
216
Summary of Contents for MF735C Series
Page 1: ...Revision 2 0 MF735C Series Service Manual ...
Page 13: ...Product Overview 1 Product Lineup 5 Specifications 7 Parts Name 10 ...
Page 23: ...No Name 6 Home key 7 Stop key 8 NFC Near Field Communication mark 1 Product Overview 14 ...
Page 83: ...Consumable Parts This machine does not have any consumable parts 4 Periodical Service 74 ...
Page 118: ... Procedure 1 Remove the ADF Sensor Unit 2x 5 Parts Replacement and Cleaning 109 ...
Page 144: ... Procedure 1 Remove the Memory Relay PCB 2x 1x 5 Parts Replacement and Cleaning 135 ...
Page 159: ...3 Remove the PCB Holder 3x 4 Remove the Drum Motor 4x 1x 5 Parts Replacement and Cleaning 150 ...
Page 180: ...7 Remove the Registration Unit 2x 5 Parts Replacement and Cleaning 171 ...
Page 181: ...Adjustment 6 Adjustment at Parts Replacement 173 ...
Page 211: ...Troubleshooting 7 Test Print 203 Troubleshooting Items 216 Debug Log 219 ...
Page 230: ...Error Jam Alarm 8 Overview 222 Error Code 225 Jam Code 232 Alarm Code 235 ...
Page 356: ...6 7 8 9 2x 10 1x 10 Installation 347 ...
Page 357: ...11 12 Installing the Card Reader 1 1x M4x16 2 10 Installation 348 ...
Page 358: ...3 4 NOTE Be sure that it does not protrude from the depression 5 6 7 1x 10 Installation 349 ...