HP CP2020 SERIES

Other Links ........................................................................................................................ 39
Embedded Web server ....................................................................................................................... 40
View the HP embedded Web server .................................................................................. 40
Embedded Web server sections ........................................................................................ 41
HP Web Jetadmin .............................................................................................................................. 43
Manage supplies ................................................................................................................................ 44
Supplies life ....................................................................................................................... 44
Print-cartridge storage ....................................................................................................... 44
HP policy on non-HP print cartridges ................................................................................. 44
HP fraud hotline and Web site ........................................................................................... 44
Print when cartridge is out ................................................................................................. 45
Replace print cartridges ..................................................................................................................... 46
Memory and font DIMMs .................................................................................................................... 50
Product memory ................................................................................................................ 50
Install memory and font DIMMs ......................................................................................... 50
Enable memory .................................................................................................................. 54
Enable memory for Windows ............................................................................ 54
Check DIMM installation .................................................................................................... 54
Clean the product ............................................................................................................................... 54
Firmware updates ............................................................................................................................... 55
5 Theory of operation
Basic operation ................................................................................................................................... 58
Major product systems ....................................................................................................... 58
Product components .......................................................................................................... 59
Sequence of operation ....................................................................................................... 60
Engine control system ........................................................................................................................ 61
DC controller ...................................................................................................................... 62
Low-voltage power supply ................................................................................................. 62
High-voltage power supply ................................................................................................ 63
Laser/scanner system ........................................................................................................................ 65
Laser failure detection ....................................................................................................... 65
Image-formation system ..................................................................................................................... 66
Image-formation process ................................................................................................... 66
Latent-image formation stage ............................................................................................ 67
Step 1: primary charging ................................................................................... 67
Step 2: laser-beam exposure ............................................................................ 68
Developing stage ............................................................................................................... 68
Step 3: development ......................................................................................... 68
Transfer stage .................................................................................................................... 69
Step 4: primary transfer ..................................................................................... 69
Step 5: secondary transfer ................................................................................ 69
Step 6: separation from the drum ...................................................................... 70
ENWW v