HP Color Laserjet 9850 mfp service manual
hp Color 9850mfp
Service
Manual
Copyright and License
© 2004 Copyright Hewlett-Packard Development Company, L.P.
Reproduction, adaptation, or translation without prior written permission
is prohibited, except as allowed under the copyright laws.
The information contained herein is subject to change without notice.
The only warranties for HP products and services are set forth in the
express warranty statements accompanying such products and services.
Nothing herein should be construed as constituting an additional
warranty. HP shall not be liable for technical or editorial errors or
omissions contained herein.
Part number: Q3225-90935
Edition 1: 03/ 2004
FCC Regulations
This equipment has been tested and found to comply with the limits for a
Class A digital device, pursuant to Part 15 of the FCC rules. These limits
are designed to provide reasonable protection against harmful
interference in a residential installation. This equipment generates, uses,
and can radiate radio frequency energy. If this equipment is not installed
and used in accordance with the instructions, it may cause harmful
interference to radio communications. However, there is no guarantee
that interference will not occur in a particular installation. If this
equipment does cause harmful interference to radio or television
reception, which can be determined by turning the equipment off and
on, the user is encouraged to try to correct the interference by one or
more of the following measures:
Reorient or relocate the receiving antenna. Increase separation between
equipment and receiver.
Connect equipment to an outlet on a circuit different from that to which
the receiver is located.
Consult your dealer or an experienced radio/TV technician.
Any changes or modifications to the printer that are not expressly
approved by HP could void the user's authority to operate this
equipment. Use of a shielded interface cable is required to comply with
the Class A limits of Part 15 of FCC rules. For more regulatory
information, see the hp 9085mfp user's guide. Hewlett-Packard shall not
be liable for any direct, indirect, incidental, consequential, or other
damage alleged in connection with the furnishing or use of this
information.
Trademark Credits
PostScript® is a trademark of Adobe Systems Incorporated.
Windows® is a U.S. registered trademark of Microsoft Corporation.
hp Color 9850mfp
CONTENTS
CONTENTS
SAFETY AND IMPORTANT WARNING ITEMS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . S-1
IMPORTANT NOTICE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . S-1
DESCRIPTION ITEMS FOR DANGER, WARNING AND CAUTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . S-1
SAFETY WARNINGS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . S-2
SAFETY INFORMATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . S-10
IMPORTANT INFORMATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . S-10
SAFETY CIRCUITS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . S-11
INDICATION OF WARNING ON THE ENGINE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . S-13
I OUTLINE
PRODUCT INFORMATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
1.
1.1 Product features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
1.2 Product specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
1.3 Product overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4
1.4 Space requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6
1.5 Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-8
1.6 Media specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-9
1.7 Media assessment tools and suppliers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-19
Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-20
1.8
1.9 Maintenance and life . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-21
CENTER CROSS SECTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-22
2.
PAPER PATH . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-23
3.
DRIVE SYSTEM DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-25
4.
4.1 Drum drive. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-25
4.2 Transfer belt conveyance/pressure drive. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-26
4.3 Developing drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-27
4.4 Toner supply drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-28
4.5 Toner collection drive. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-29
4.6 Fixing drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-30
4.7 Paper feed drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-31
4.7.1
4.7.2 Vertical conveyance drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-33
4.8 ADU drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-34
4.8.1 By-pass tray drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-34
4.8.2 Registration drive/loop drive. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-35
4.8.3 ADU conveyance drive. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-36
4.8.4 Reverse paper exit drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-37
4.9
4.10 Scanner drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-39
5. IMAGE CREATION PROCESS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-40
5.1 Image creation flow and function. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-40
5.2 Charging process (Step 1). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-41
5.3 Laser exposure process (Step 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-41
Paper feed tray 1 to 3 drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-31
Engine paper exit drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-38
I OUTLINEII UNIT EXPLANATIONIII DIS./ASSEMBLY
i
CONTENTS
I OUTLINE
II UNIT EXPLANATION
1. SCANNER. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
II UNIT EXPLANATION
2. WRITE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-12
III DIS./ASSEMBLY
3. DRUM UNIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-21
4. DEVELOPING UNIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-26
5. TRANSFER BELT UNIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-30
hp Color 9850mfp
5.4 Developing process (Step 3) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-42
5.5 1st transfer process (Step 4) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-43
5.6 2nd transfer process (Step 5) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-44
5.7 Separation process (Step 6) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-44
5.8 Drum cleaning (Sub step 1). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-45
5.9 Pre-charging exposure (Sub step 2). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-45
5.10 Transfer belt cleaning (Sub step 3) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-46
2nd transfer roller L cleaning (Sub step 4) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-46
5.11
5.12 Toner collection (Sub step 5) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-47
5.13 Process speed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-47
1.1 Composition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
1.2 Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
1.2.1 Home position search in the exposure unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
1.2.2 Shading correction reading. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3
1.2.3 Original reading mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4
1.2.4 Original reading control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5
1.2.5 APS control. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-8
1.2.6 AE control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-10
1.2.7 Image processing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-10
2.1 Composition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-12
2.2 Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-14
2.2.1 Image writing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-14
2.2.2
3.1 Composition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-21
3.2 Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-25
3.2.1 Image formation timing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-25
4.1 Composition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-26
4.2 Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-28
4.2.1 Flow of developer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-28
4.2.2 Developing control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-28
4.2.3 Toner supply control to the developing unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-28
4.2.4 Developing bias control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-29
4.2.5 Durability of the developer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-29
5.1 Composition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-30
5.2 Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-32
5.2.1 Transfer belt pressure/release mechanism . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-32
5.2.2 Image correction unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-33
5.2.3 1st transfer control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-34
5.2.4 2nd transfer control. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-34
Color registration correction control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-14
ii
hp Color 9850mfp
6. TONER SUPPLY. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-35
6.1 Composition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-35
6.2 Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-36
6.2.1 Toner supply control to the toner hopper section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-36
6.2.2 Toner supply control to the developing unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-36
6.2.3 Copy/print operation stop control due to no toner . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-37
7. TONER COLLECTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-38
7.1 Composition. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-38
7.2 Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-39
7.2.1 Toner collection control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-39
7.2.2 Waste toner full detection control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-39
PAPER FEED TRAY 1 TO 3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-40
8.
8.1 Composition. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-40
8.2 Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-42
8.2.1 Paper feed control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-42
8.2.2 Up/down plate control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-43
8.2.3 Remaining paper detection control. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-44
8.2.4 Paper size detection control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-45
9. BY-PASS FEED . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-46
9.1 Composition. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-46
9.2 Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-47
9.2.1 Tray up drive control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-47
9.2.2 Paper feed control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-47
9.2.3 Paper size detection control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-47
10. VERTICAL CONVEYANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-48
10.1 Composition. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-48
10.2 Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-48
10.2.1 Vertical conveyance control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-48
11. REGISTRATION/ADU/REVERSE/PAPER EXIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-49
11.1 Composition. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-49
11.2 Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-53
11.2.1 Switching control of the paper exit/ADU conveyance path. . . . . . . . . . . . . . . . . . . . . . . . . 2-53
11.2.2 Reverse/exit control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-57
11.2.3 ADU conveyance control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-58
11.2.4 Paper reverse control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-59
11.2.5 ADU pre-registration control. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-60
11.2.6 Registration control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-62
11.2.7 2nd transfer control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-63
11.2.8 Paper exit full detection control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-63
12. FIXING UNIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-64
12.1 Composition. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-64
12.2 Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-66
12.2.1 Fixing drive control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-66
12.2.2 Pressure/release control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-67
12.2.3 Web control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-68
12.2.4 Temperature control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-68
CONTENTS
I OUTLINEII UNIT EXPLANATIONIII DIS./ASSEMBLY
iii
CONTENTS
13. INTERFACE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-69
14. IMAGE STABILIZATION CONTROL. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-70
I OUTLINE
15.OTHER CONTROLS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-74
II UNIT EXPLANATION
III DIS./ASSEMBLY
hp Color 9850mfp
13.1 Composition. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-69
14.1 Toner density control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-70
14.2 Dmax control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-70
14.3 Charging potential control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-71
14.3.1 Correction of the reference value . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-71
14.3.2 Low humidity environment correction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-71
14.4 Dot diameter adjustment control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-72
14.5 Gamma correction control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-73
15.1 Parts to which power is supplied even when the reset switch is turned off . . . . . . . . . . . . . . . . . 2-74
15.2 Parts that operate only when the power switch is turned on . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-75
15.2.1 Parts that operate when the reset switch is turned on . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-75
15.2.2 Parts that operate when the main switch is turned on . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-75
15.3 Fan control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-76
15.3.1 Fan composition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-76
15.4 Operation board control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-77
15.4.1 Operation board composition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-77
15.5 Counter control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-78
15.5.1 Counter composition. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-78
15.5.2 Counter operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-78
15.6 ACS control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-80
15.6.1 Switching between the color mode and the black and white mode . . . . . . . . . . . . . . . . . . 2-80
15.6.2 Copy count when using ACS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-80
III DISASSEMBLY/ASSEMBLY
1. EXTERIOR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
Replacing the dust filter 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
1.1
Replacing the dust filter 1 and the ozone filter 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3
1.2
1.3 Replacing the toner collection box . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5
1.4 Angle adjustment of the operation board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-7
1.5 Removing and reinstalling the main board unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-8
2. SCANNER. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-12
2.1 Screws that must not be removed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-12
Removing and reinstalling the scanner glass . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-13
2.2
2.3 Removing and reinstalling the CCD unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-14
2.4 Removing and reinstalling the exposure unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-16
2.5 Removing and reinstalling the exposure lamp . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-19
2.6 Removing the scanner wire . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-20
2.7 Reinstalling the scanner wire . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-22
3. WRITING. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-25
3.1 Screw that must not be removed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-25
3.2 Removing and reinstalling the write unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-26
4. PROCESS UNIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-29
4.1 Flow of the disassembly of the process unit section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-29
4.2 Cleaning the charging corona unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-30
iv
hp Color 9850mfp
4.3 Cleaning/replacing, removing and reinstalling the charging wire assy
/the charging grid plate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-32
4.4 Pulling out the process unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-33
4.5 Removing and reinstalling the transfer belt unit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-34
4.6 Replacing the belt cleaning brush unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-37
4.7 Replacing the belt cleaning blade . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-38
4.8 Replacing the toner collection sheet 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-39
4.9 Replacing the belt separation claw . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-40
4.10 Replacing the transfer belt. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-41
4.11 Replacing the 1st transfer roller. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-43
4.12
Replacing the 2nd transfer roller U . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-44
4.13 Replacing the drum cartridge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-45
4.14 Removing and reinstalling the drum . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-46
4.15 Replacing the developing unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-48
4.16 Replacing the developer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-50
4.17 Replacing the belt separation claw solenoid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-52
4.18 Removing and reinstalling the process unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-53
4.19 Removing and reinstalling the image correction unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-54
5. TONER SUPPLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-55
5.1 Opening and closing the toner supply section. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-55
5.2 Replacing the charging dust filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-56
6.
PAPER FEED TRAYS 1 to 3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-57
6.1 Removing and reinstalling the paper feed unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-57
6.2
Removing and reinstalling the paper feed trays 1 to 3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-59
6.3 Replacing the paper feed roller and the feed rubber. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-60
6.4 Replacing the double feed prevention rubber . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-62
6.5
Replacing the paper feed clutch and the pre-registration clutch . . . . . . . . . . . . . . . . . . . . . . . . . 3-63
6.6
Removing and reinstalling the tray up/down wire . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-64
7. BY-PASS TRAY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-68
7.1 Replacing the paper feed roller and the feed roller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-68
7.2 Replacing the double feed prevention roller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-70
7.3
Replacing the paper feed clutch BP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-71
8. VERTICAL CONVEYANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-73
8.1 Removing and reinstalling the vertical conveyance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-73
8.2
Replacing the intermediate conveyance clutch 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-76
9. FIXING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-77
9.1 Screws that must not be removed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-77
9.2 Removing and reinstalling the fixing unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-78
9.3
Replacing the fixing upper heater lamps 1 and 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-79
9.4 Replacing the fixing lower heater lamp . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-81
9.5
Replacing the fixing roller U, ball bearing U and the heat insulating sleeve U . . . . . . . . . . . . . . 3-84
9.6
Replacing the fixing roller L, ball bearing L and the heat insulating sleeve L . . . . . . . . . . . . . . . 3-86
9.7
Replacing the fixing temperature sensor 3, and removing and reinstalling
the fixing temperature sensor 1 and the thermostat 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-88
9.8
Replacing the fixing temperature sensor 4, and removing and reinstalling
the fixing temperature sensor 2 and the thermostat L. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-93
9.9 Replacing the fixing drive gear . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-98
9.10 Replacing the fixing cleaning unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-100
CONTENTS
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v
CONTENTS
10. REGISTRATION/ADU/REVERSE/PAPER EXIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-104
I OUTLINE
II UNIT EXPLANATION
hp Color 9850mfp
9.11 Replacing the fixing torque limiter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-102
10.1 Removing and reinstalling the ADU. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-104
10.2 Replacing the registration cleaning sheet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-106
Replacing the separation corona unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-107
10.3
Replacing the transfer ground plate unit and the 2nd transfer roller L . . . . . . . . . . . . . . . . . . . 3-108
10.4
10.5
Replacing the registration roller. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-109
10.6
Replacing the intermediate conveyance clutches 2 and 3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-111
10.7
Replacing the ADU conveyance clutches 1 and 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-112
10.8 Replacing the ADU pre-registration clutch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-113
10.9 Replacing the decurler roller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-114
III DIS./ASSEMBLY
vi
SAFETY AND IMPORTANT WARNING ITEMS
SAFETY AND IMPORTANT WARNING ITEMS
Read carefully the Safety and Important Warning Items described below to understand them before doing ser-
vice work.
IMPORTANT NOTICE
Because of possible hazards to an inexperienced person servicing this MFP as well as the risk of damage to
the MFP, hp strongly recommends that all servicing be performed only by hp-trained service technicians.
Changes may have been made to this MFP to improve its performance after this Service Manual was
printed. Accordingly, hp does not warrant, either explicitly or implicitly, that the information contained in this
Service Manual is complete and accurate.
The user of this Service Manual must assume all risks of personal injury and/or damage to the MFP while
servicing the MFP for which this Service Manual is intended.
Therefore, this Service Manual must be carefully read before doing service work both in the course of techni-
cal training and even after that, for performing maintenance and control of the MFP properly.
Keep this Service Manual also for future service.
DESCRIPTION ITEMS FOR DANGER, WARNING AND
CAUTION
In this Service Manual, each of three expressions “
defined as follows together with a symbol mark to be used in a limited meaning.
When servicing the MFP, the relevant works (disassembling, reassembling, adjustment, repair, maintenance,
etc.) need to be conducted with utmost care.
DANGER
WARNING
CAUTION
Symbols used for safety and important warning items are defined as follows:
:Precaution when using the MFP.
:Action having a high possibility of suffering death or serious injury
:Action having a possibility of suffering death or serious injury
:Action having a possibility of suffering a slight wound, medium trouble, and
property damage
General precaution Electric hazard High temperature
DANGER”, “ WARNING”, and “ CAUTION” is
:Prohibition when using the MFP.
:Direction when using the MFP.
General prohibition Do not touch with wet hand Do not disassemble
General instruction
S-1
Unplug
Ground/Earth
SAFETY AND IMPORTANT WARNING ITEMS
SAFETY WARNINGS
MODIFICATIONS NOT AUTHORIZED BY hp
1.
HP MFP's are renowned for their high reliability. This reliability is achieved through high-quality design
and a solid
MFP design is a highly complicated and delicate process where numerous mechanical, physical, and
electrical aspects
factors. For this reason, unau-thorized modifications involve a high risk of degradation in performance and
safety. Such modifications are thereforestrictly prohibited. The points listed below are not exhaustive, but they
illustrate the reasoning behind this policy.
Using any cables or power cord not specified by hp.
•
Using any fuse or thermostat not specified by hp. Safety will not be
•
assured, leading to a risk of fire and injury.
service network.
have to be taken into consideration, with the aim of arriving at proper tolerances and safety
DANGER : PROHIBITED ACTIONS
• Disabling fuse functions or bridging fuse terminals with wire, metal clips, sol-
der or similar object.
• Disabling relay functions (such as wedging paper between relay contacts)
• Disabling safety functions (interlocks, safety circuits, etc.) Safety will not be
assured, leading to a risk of fire and injury.
Making any modification to the MFP unless instructed by hp
•
Using parts not specified by hp
•
S-2
SAFETY AND IMPORTANT WARNING ITEMS
2. CHECKPOINTS WHEN PERFORMING ON-SITE SERVICE
HP MFP's are extensively tested before shipping, to ensure that all applicable safety standards are met, in order
to pro-
tect the customer and customer engineer (hereafter called the CE) from the risk of injury. However, in daily
use, any electri-cal equipment may be subject to parts wear and eventual failure. In order to maintain safety
and reliability, the CE mustperform regular safety checks.
2.1 Power Supply
WARNING: Wall Outlet
Check that main voltage is as specified. Plug the power cord into the dedi-
•
cated wall outlet with a capacity greater than the maximum power consump-
tion.
If excessive current flows in the wall outlet, fire may result.
• If two or more power cords can be plugged into the wall outlet, the total load
must not exceed the rating of the wall outlet.
If excessive current flows in the wall outlet, fire may result.
kw
WARNING: Power Plug and Cord
• Make sure the power cord is plugged in the wall outlet securely.
Contact problems may lead to increased resistance, overheating, and the
risk of fire.
• Check whether the power cord is damaged. Check whether the sheath is
damaged.
If the power plug, cord, or sheath is damaged, replace with a new power
cord (with plugs on both ends) specified by hp. Using the damaged
power cord may result in fire or electric shock.
When using the power cord (inlet type) that came with this MFP, be sure to
•
observe the following precautions:
Make sure the MFP-side power plug is securely inserted in the socket
a.
on the rear panel of the MFP.
Secure the cord with a fixture properly.
b. If the power cord or sheath is damaged, replace with a new power cord
(with plugs on both ends) specified by hp.
If the power cord (inlet type) is not connected to the MFP securely, a
contact problem may lead to increased resistance, overheating, and risk
of fire.
• Check whether the power cord is not stepped on or pinched by a table and
so on.
Overheating may occur there, leading to a risk of fire.
S-3
SAFETY AND IMPORTANT WARNING ITEMS
WARNING: Power Plug and Cord
• Do not bundle or tie the power cord.
Overheating may occur there, leading to a risk of fire.
• Check whether dust is collected around the power plug and wall outlet.
Using the power plug and wall outlet without removing dust may result in
fire.
• Do not insert the power plug into the wall outlet with a wet hand.
The risk of electric shock exists.
• When unplugging the power cord, grasp the plug, not the cable.
The cable may be broken, leading to a risk of fire and electric shock.
WARNING: Wiring
• Never use multi-plug adapters to plug multiple power cords in the same out-
let.
If used, the risk of fire exists.
• When an extension cord is required, use a specified one.
Current that can flow in the extension cord is limited, so using a too long
extension cord may result in fire.
Do not use an extension cable reel with the cable taken up. Fire may
result.
WARNING: Ground Lead
•
Check whether the MFP is grounded properly.
If current leakage occurs in an ungrounded MFP, you may suffer electric
shock while operating the MFP. Connect the ground lead to one of the
following points:
a. Ground terminal of wall outlet
b. Ground terminal for which Class D work has been done
S-4
SAFETY AND IMPORTANT WARNING ITEMS
WARNING: Ground Lead
• Pay attention to the point to which the ground lead is connected.
Connecting the ground lead to an improper point such as the points listed
below results in a risk of explosion and electric shock:
a. Gas pipe (A risk of explosion or fire exists.)
b. Lightning rod (A risk of electric shock or fire exists.)
c. Telephone line ground (A risk of electric shock or fire exists in the case
of lightning.)
d. Water pipe or faucet (It may include a plastic portion.)
2.2. Installation Requirements
WARNING: Prohibited Installation Place
•
Do not place the MFP near flammable materials such as curtains or volatile
materials that may catch fire.
A risk of fire exists.
Do not place the MFP in a place exposed to water such as rain water.
•
A risk of fire and electric shock exists.
WARNING: Nonoperational Handling
•
When the MFP is not used over an extended period of time (holidays, etc.),
switch it off and unplug the power cord.
Dust collected around the power plug and outlet may cause fire.
CAUTION: Temperature and Humidity
•
Do not place the MFP in a place exposed to direct sunlight or near a heat
source such as a heater.
A risk of degradation in MFP performance or deformation exists.
Do not place the MFP in a place exposed to cool wind.
Recommended temperature and humidity are as follows:
Temperature: 10
Humidity: 10% to 80% (no dew condensation)
Avoid other environments as much as possible.
°C
to 30
°C
CAUTION: Ventilation
•
Do not place the MFP in a place where there is much dust, cigarette
smoke, or ammonia gas.
Place the MFP in a well ventilated place to prevent engine problems
and image faults.
S-5
SAFETY AND IMPORTANT WARNING ITEMS
CAUTION: Ventilation
•
The MFP generates ozone gas during operation, but it is not sufficient to be
harmful to the human body.
If a bad smell of ozone is present in the following cases, ventilate the
room.
a. When the MFP is used in a poorly ventilated room
b. When taking a lot of copies
c. When using multiple MFPs at the same time
CAUTION: Vibration
•
When installing the MFP, read the Installation Guide thoroughly. Be sure to
install the MFP in a level and sturdy place.
Constant vibration will cause problems.
• Be sure to lock the caster stoppers.
In the case of an earthquake and so on, the MFP may slide, leading to a
injury.
CAUTION: Inspection before Servicing
• Before conducting an inspection, read all relevant documentation (service
manual, technical notices, etc.) and proceed with the inspection following
the prescribed procedure in safety clothes, using only the prescribed tools.
Do not make any adjustment not described in the documentation.
If the prescribed procedure or tool is not used, the MFP may break and a
risk of injury or fire exists.
• Before conducting an inspection, be sure to disconnect the power plugs from
the MFP and options.
When the power plug is inserted in the wall outlet, some units are still pow-
ered even if the POWER switch is turned OFF. A risk of electric shock
exists.
• The area around the fixing unit is hot.
You may get burned.
DANGER: Work Performed with the MFP Powered
• Take every care when making adjustments or performing an operation check
with the MFP powered.
If you make adjustments or perform an operation check with the external
cover detached, you may touch live or high-voltage parts or you may be
caught in moving gears or the timing belt, leading to a risk of injury.
S-6
SAFETY AND IMPORTANT WARNING ITEMS
DANGER: Work Performed with the MFP Powered
• Take every care when servicing with the external cover detached.
High-voltage exists around the drum unit. A risk of electric shock exists.
WARNING: Safety Checkpoints
• Check the exterior and frame for edges, burrs, and other damages.
The user or CE may be injured.
• Do not allow any metal parts such as clips, staples, and screws to fall into the
MFP.
They can short internal circuits and cause electric shock or fire.
• Check wiring for squeezing and any other damage.
Current can leak, leading to a risk of electric shock or fire.
• When disconnecting connectors, grasp the connector, not the cable.
(Specifically, connectors of the AC line and high-voltage parts)
Current can leak, leading to a risk of electric shock or fire.
• Carefully remove all toner remnants and dust from electrical parts and elec-
trode units such as a charging corona unit.
Current can leak, leading to a risk of MFP trouble or fire.
• Check high-voltage cables and sheaths for any damage.
Current can leak, leading to a risk of electric shock or fire.
• Check electrode units such as a charging corona unit for deterioration and
sign of leakage.
Current can leak, leading to a risk of trouble or fire.
• Before disassembling or adjusting the write unit incorporating a laser, make
sure that the power cord has been disconnected.
The laser light can enter your eye, leading to a risk of loss of eyesight.
• Do not remove the cover of the write unit. Do not supply power with the write
unit shifted from the specified mounting position.
The laser light can enter your eye, leading to a risk of loss of eyesight.
• When replacing a lithium battery, replace it with a new lithium battery speci-
fied in the Parts Guide Manual. Dispose of the used lithium battery using the
method specified by local authority.
Improper replacement can cause explosion.
S-7
SAFETY AND IMPORTANT WARNING ITEMS
WARNING: Safety Checkpoints
• After replacing a part to which AC voltage is applied (e.g., optical lamp and
fixing lamp), be sure to check the installation state.
A risk of fire exists.
• Check the interlock switch and actuator for loosening and check whether the
interlock functions properly.
If the interlock does not function, you may receive an electric shock or be
injured when you insert your hand in the MFP (e.g., for clearing paper
jam).
• Make sure the wiring cannot come into contact with sharp edges, burrs, or
other pointed parts.
Current can leak, leading to a risk of electric shock or fire.
• Make sure that all screws, components, wiring, connectors, etc. that were
removed for safety check and maintenance have been reinstalled in the orig-
inal location. (Pay special attention to forgotten connectors, pinched cables,
forgotten screws, etc.)
A risk of MFP trouble, electric shock, and fire exists.
DANGER: HANDLING OF SERVICE MATERIALS
• Toner and developer are not harmful substances, but care must be taken not
to breathe excessive amounts or let the substances come into contact with
eyes, etc. It may be stimulative.
If the substances get in the eye, rinse with plenty of water immediately.
When symptoms are noticeable, consult a physician.
• Never throw the used cartridge and toner into fire.
You may be burned due to dust explosion.
S-8
SAFETY AND IMPORTANT WARNING ITEMS
DANGER : HANDLING OF SERVICE MATERIALS
• Unplug the power cord from the wall outlet.
Drum cleaner (isopropyl alcohol) and roller cleaner (acetone-based) are
highly flammable and must be handled with care. A risk of fire exists.
•
Do not replace the cover or turn the MFP ON before any solvent remnants
on the cleaned parts have fully evaporated.
A risk of fire exists.
• Use only a small amount of cleaner at a time and take care not to spill any
liquid. If this happens, immediately wipe it off.
A risk of fire exists.
• When using any solvent, ventilate the room well.
Breathing large quantities of organic solvents can lead to discomfort.
3. MEASURES TO TAKE IN CASE OF AN ACCIDENT
•
If an accident has occurred, the distributor who has been notified first must immediately take emergency
measures toprovide relief to affected persons and to prevent further damage.
If a report of a serious accident has been received from a customer, an on-site evaluation must be carried
•
out quicklyand hp must be notified.
To determine the cause of the accident, conditions and materials must be recorded through direct on-site
•
checks, inaccordance with instructions issued by hp.
For reports and measures concerning serious accidents, follow the regulations given in “Serious
•
Accident Report/Follow-up Procedures”.
4. CONCLUSION
•
Safety of users and customer engineers depends highly on accurate maintenance and administration.
Therefore,safety can be maintained by the appropriate daily service work conducted by the customer
engineer.
•
When performing service, each MFP on the site must be tested for safety. The customer engineer must
verify thesafety of parts and ensure appropriate management of the equipment.
S-9
SAFETY AND IMPORTANT WARNING ITEMS
SAFETY INFORMATION
IMPORTANT INFORMATION
The Center for Devices and Radiological Health (CDRH) of the U.S. Food and Drug Administration implemented
regulations for laser products manufactured since August 1, 1976. Compliance is mandatory for products mar-
keted in the United States.
This MFP is certified as a “Class 1” laser product under the U.S.
Department of Health and Human Services (DHHS) Radiation Performance Standard according to the Radiation
Control for Health and Safety Act of 1968. Since radiation emitted inside this MFP is completely confined within
protective housings and external covers, the laser beam cannot escape during any phase of normal user opera-
tion.
S-10
SAFETY AND IMPORTANT WARNING ITEMS
SAFETY CIRCUITS
This engine is provided with the following safety circuits to prevent engine faults from resulting in serious
accidents.
• Overall protection circuit
Fixing upper lamp 1 (L2), Fixing upper lamp 2 (L3), Fixing lower lamp (L4) overheating prevention circuit
•
These safety circuits are described below to provide the service engineer with a renewed awareness of them in
order to pre-vent servicing errors that may impair their functions.
1. Overall protection circuit
CBR1
NF
CBR2
1.1 Protection by circuit breaker /1 (CBR1) and circuit breaker /2 (CBR2)
CBR1 and CBR2 interrupt the AC line instantaneously when an excessive current flows due to a short
in the ACline.
CAUTION:
The CBR1 and CBR2 functions must not be deactivated under any circumstances.
S-11
SAFETY AND IMPORTANT WARNING ITEMS
2.
Fixing upper lamp 1 (L2), Fixing upper lamp 2 (L3), Fixing lower lamp (L4) overheating
prevention circuit
PRCB ACDB
TH1
TH3
TH2
TH4
Control
section
AC driver
section
RL1
RL1
FHCB
L2
TS1
L3
TS2
L4
2.1 Protection by software
The output voltage from fixing temperature sensor 1 (TH1) and fixing temperature sensor 2 (TH2) is
read by theCPU. If this voltage is abnormal, L2, L3, and L4 are turned OFF by opening main relay (RL1).
CAUTION:
The clearance between the fixing upper roller and TH1 and the clearance between the fixing
•
lower roller and TH2 must not be changed. When replacing them, make sure to comply with
the specified clearances.
• The RL1 function must not be deactivated under any circumstances.
2.2 Protection by the hardware circuit
The output voltages from fixing temperature sensor 1 (TH1), fixing temperature sensor 2 (TH2), fixing
temperaturesensor 3 (TH3), and fixing temperature sensor 4 (TH4) are compared with the abnormality
judgment referencevalue in the comparator circuit. If the output voltage from TH1, TH2, TH3, or TH4
exceeds the reference value, L2,L3, and L4 are turned OFF by opening RL1.
CAUTION:
• The clearance between the fixing upper roller and TH1 and the clearance between the fixing
lower roller and TH2 must not be changed. When replacing them, make sure to comply with
the specified clearances.
• Periodically check the contact between the fixing upper roller and TH3 and the contact
between the fixing lower roller and TH4, and replace them if any abnormality is detected.
• The RL1 function must not be deactivated under any circumstances.
2.3
Protection by thermostat 1 (TS1) and thermostat 2 (TS2)
When the temperature of the fixing upper roller exceeds the specified value, TS1 is turned OFF, thus
interrupting thepower to L2 and L3 directly. When the temperature of the fixing lower roller exceeds the
specified value, TS2 isturned OFF, thus interrupting the power to L4 directly.
CAUTION:
Do not use any other electrical conductor in place of TS1 and TS2.
S-12
SAFETY AND IMPORTANT WARNING ITEMS
INDICATION OF WARNING ON THE ENGINE
Caution labels shown below are attached in some areas on/in the engine.
When accessing these areas for maintenance, repair, or adjustment, special care should be taken to avoid
burns and electricshock.
CAUTION
You may be burned or injured if you touch any area that you are advised by any caution label to keep your-
self away from.
Do not remove caution labels. If any caution label has come off or soiled and therefore the caution cannot
be read, contact our Service Office.
S-13
SAFETY AND IMPORTANT WARNING ITEMS
(Right rear side of the ADF)
(Right rear side
of the Engine)
(Inside of the HCI)
HCI
CAUTION
You may be burned or injured if you touch any area that you are advised by any caution label to keep your-
self away from.
Do not remove caution labels. If any caution label has come off or soiled and therefore the caution cannot
be read, contact our Service Office.
S-14
Q3636A
SAFETY AND IMPORTANT WARNING ITEMS
CAUTION
You may be burned or injured if you touch any area that you are advised by any caution label to keep your-
self away from.
Do not remove caution labels. If any caution label has come off or soiled and therefore the caution cannot
be read, contact our Service Office.
S-15
SAFETY AND IMPORTANT WARNING ITEMS
CAUTION
You may be burned or injured if you touch any area that you are advised by any caution label to keep your-
self away from.
Do not remove caution labels. If any caution label has come off or soiled and therefore the caution cannot
be read, contact our Service Office.
S-16
SAFETY AND IMPORTANT WARNING ITEMS
CAUTION
You may be burned or injured if you touch any area that you are advised by any caution label to keep your-
self away from.
Do not remove caution labels. If any caution label has come off or soiled and therefore the caution cannot
be read, contact our Service Office.
S-17
SAFETY AND IMPORTANT WARNING ITEMS
Unplug the engine before removing scanner glass.
Debrancher le copieur avant de retirer la vitre d'exposition.
Desenchufe la maquina antes de quitar el vidrio.
Desconecte a unidade da tomada antes de remover o vidro de exposicao.
PS
~
CAUTION
You may be burned or injured if you touch any area that you are advised by any caution label to keep your-
self away from.
Do not remove caution labels. If any caution label has come off or soiled and therefore the caution cannot
be read, contact our Service Office.
S-18
hp Color 9850mfp
I Product information
1.1 Product features
HP Color 9850mfp (Q3225A) basic configuration
The HP Color 9850mfp comes standard with 128-MB RAM for each color, wideformat standalone copying capability, trays 1, 2 and 3 (500-sheets each), a 250sheet multipurpose bypass tray and a Reversing Automatic Document Feeder
RADF.
HP Color 9850mfp (Q3225A) fully loaded
The fully loaded HP Color 9850mfp comes with 384-MB RAM for each color, a 20GB EIO hard disk, wide-format printing, copying and network printing capabilities,
trays 1, 2 and 3 (500-sheets each), a 250-sheet multipurpose bypass tray, tray 4
(a 2,500-sheet high capacity input HCI), a Reversing Automatic Document Feeder
RADF, an EFI print controller, a 3000-sheet Stapler-stacker or a Multifunction
Finisher with a Trimmming Unit at the output, a Post Insertion Unit for feeding
covers, and a Hole Punch Unit at the output.
Table 1. Features of the HP Color 9850mfp
OUTLINE OF SYSTEM
I OUTLINE
Speed
Resolution
Consumables
Language
and fonts
Memory expansion
Functions
Expandability z HP Color 9850mfp automatic document feeder (standard)
z Up to 50/51 pages per minute (ppm) for letter / A4-size media.
z First page out in 7.6 seconds for color and 6 seconds for B/W.
z 600-by-600 dots per inch (dpi).
z
600-by-1800 dots per inch (dpi) enhanced resolution mode (printing only).
z CMYK toner bottles.
z Staple cartridges.
z PCL6 EC (XL)
z PCL6e
z PCL5EC (with color)
z PCL6E (XL)
z PJL
Post Script 3
z
Basic 128 MB of RAM per color, expandable to 384 MB by using hp 256
z
MB memory module (Q6993A).
z Bypass tray supports up to 200 sheets of 28 lbs of custom-sized media up
to 13 by 19 in. (250 sheets of 20 lbs)
z Trays 1, 2 and 3 support up to 400 sheets of 28 lbs (500 sheets of 20 lbs)
Tray 4 supports up to 2,200 sheets of 28 lbs (2,500 sheets of 20 lbs)
z
z Two-sided printing (duplex printing)
z Wide-format printing
z Glossy printing
z Document finishing options (with stapler-stacker or multifunction finisher).
z 3,000-sheet stapler/stacker (optional)
z 3,000-sheet Multifunction finisher (optional)
z 4 DIMM slots for adding memory (standard)
z 20 GB hard disk drive (optional)
Wireless printing
Interface connection
z Not supported
Video interface for EFI print controller
z
z Parallel port (based on IEEE 1284, for service)
z Serial port (USB Type B, for service)
z RJ45 Ethernet connector (available with EFI print controller)
1-1
PRODUCT SPECIFICATIONS hp Color 9850mfp
Table 1. Features of the HP Color 9850mfp (continued)
Networking
Maximum monthly duty cycle z 150,000 pages per month
z EFI print controller
I OUTLINE
1.2 Product specifications
Identification
A user-accessible label is located on the back cover of the engine. The model number is
alphanumeric, such as Q3225A.
The serial number contains information about the country of origin, product type, engine voltage,
revision number, and engine serial number. An example of a serial number is JPHCB00001. Please
refer to the 9850mfp Parts Manual, section How to use this manual for detailed information.
The identification label also contains electrical information and regulatory information.
Note The electrical information and regulatory information vary by country/region.
Specifications
Type:
Copying method: Tandem intermediate transfer type electrostatic method
Original table: Fixed
Original alignment: Rear left side as reference
Photosensitive material: OPC
Sensitizing method:
Paper feed trays: 3 trays method (500 sheets x 3, 80 to 90g/m
Console type (floor-mounted type)
Laser writing
Multisheet by-pass tray (250 sheets, 80 to 90g/m
Q5690A (2500 sheets, 80 to 90g/m , optional)
2
2
) (400 sheets x 3, 105g/m2)
2
) (200 sheets, 105g/m2)
WARNING!
Table 2. HP Color 9850mfp specifications
Specification Out-of-box Packaged
Height 1,179 mm (46.4 inches) 1,210 mm (47.6 inches)
Width 1,275 mm (50.2 inches) 950 mm (37.4 inches)
Depth 889 mm (35.0 inches) 1,258 mm (49.5 inches)
Weight
313 kg (690 lb) 361 kg (796 lb)
Table 3. Power requirements and circuit capacity
Power source for inch area Power source for metric area
Power requirements
Minimum recommended
circuit capacity
208 to 240 V (+/- 10%)
60 Hz 50 Hz
3600 Watts (dedicated circuit) 3450 Watts (dedicated circuit)
230 V, -14% +10.6%
Power requirements are based on the country/region where the MFP is sold. Do not convert operating
voltages. This can damage the MFP and void the product warranty.
1-2
hp Color 9850mfp
Table 4. Power consumption
OUTLINE OF SYSTEM
MFP state
Switch off mode
Sleep mode
Low power mode
Continuous copying mode (A4) 1,618 W 1,603 W
Inch area consumption
0.2 W
12 W
172.4 W
568 WIdling mode
Metric area consumption
0.2 W
11 W
178.8 W
548 W
Environmental specifications
The environmental specifications must be maintained to ensure the proper operation of the MFP.
Consider the following points before installing the MFP:
z Install the MFP in a well-ventilated, dust-free area.
z Install the MFP on a level, flat surface that can support its size and weight. Do not install on
carpet or on other soft surfaces. Make sure that all four MFP feet are level.
z Install the MFP where temperature and humidity are stable, with no abrupt changes (away from
water sources, humidifiers, air conditioners, refrigerators, or other major appliances).
z Install the MFP away from direct sunlight, areas that experience vibration, open flames,
ammonia fumes, ultrasonic heaters, and devices that emit a magnetic field. If the MFP is
placed near a window, make sure that the window has a curtain or blind to block direct sunlight.
z Maintain enough space around the MFP for proper access and ventilation.
z Be sure to use a power source of the voltage and frequency indicated in the product
specifications. Ensure that the current carrying capacity of the power outlet is at least equal to
the current listed in the product specifications.
z Power the machine directly from a dedicated power outlet. (Do not use an extension cord.)
z Do not plug or unplug the power cord with wet or dirty hands, to prevent an electric shock.
I OUTLINE
Note
Table 5. Environmental specifications
Allowable condition Recommended condition
Operating temperature 10 to 30 C elsius (C)
(50 to 86 Fahrenheit [F])
Relative humidity 10 to 80 percent 40 to 60 percent
18 to 23 C (64 to 73 F)
Table 6. Noise level specifications
Acoustics Printing (50 ppm) Low power mode
Sound power level L
Sound pressure level, L
(Bystander position)
pAm
L
WAd
pAm
= 59 dB(A)
essentially inaudible = 7.7 B(A)
essentially inaudible
Testing per International Standards Organization (ISO) 9296 and (ISO) 7779.
1-3
PRODUCT SPECIFICATIONS hp Color 9850mfp
1.3 Product overview
External assembly locations
I OUTLINE
Control panel
LCD Touch screen
Power switch
Stapler/stacker
(option)
RADF
Toner supply unit
Toner access door
Toner recovery box
Multi-sheet
bypass tray
Trimmer unit
(option)
Front door
Tray 1
Cover insertion kit
(option)
Tray 2
Right side door
Tray 3
Work table
Tray 4 ( HCI High
capacity input) (option)
Trimmer kit (option)
Multifunction Finisher (option)
1-4
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