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Theory of operation
POR sequence
As the printer turns on, the engine code goes through a series of tests to verify hardware integrity. If a hardware
failure is detected, then it is reported to the printer. If the POR sequence cannot be completed successfully,
then the printer may post an error message. The message states that service may be needed.
Printer control
The printer uses a single processor for both RIP and engine functions. The raster image processor (RIP) code
performs system responsibilities such as PC connection, LAN, ISP attachments, and bitmap generation. The
engine code performs tasks related to the operation of the electrical and mechanical device systems such as
motors, lasers, power supplies, and fusers. The NVRAMs are located on the controller board and control panel,
replacement of either the controller board or control panel will pull or mirror NVRAM data from each other.
Paper path information
Input tray
When feeding media, the ACM lowers to come into contact with the media. The pick rollers on the ACM rotate
to push the media to the wear strips at the front of the tray. The wear strips provide a fixed resistance to ensure
that sheets are fed one at a time. The media is then fed to the secondary input roller and then to the first input
roller.
First input roller
Secondary input
roller
Wear strips
Pick rollers
Option tray
Multipurpose feeder (MPF)
The driving force from the main drive motor is transmitted through the MPF gearbox. When the MPF solenoid
activates, it allows the MPF sector gear linked to the MPF gearbox to rotate. The MPF pick roll shaft is connected
to the MPF sector gear.
4514-330
Theory of operation
315
Содержание MS312
Страница 11: ...Part number index 335 Part name index 339 4514 330 Table of contents 11 ...
Страница 12: ...4514 330 Table of contents 12 ...
Страница 182: ...4514 330 182 ...
Страница 214: ...5 Remove the three screws B and then remove the left front mount B 4514 330 Parts removal 214 ...
Страница 230: ...5 Remove the four screws B and then remove the right front mount B 4514 330 Parts removal 230 ...
Страница 232: ...Cartridge plunger removal 1 Open the front door 2 Tilt the cartridge plunger 4514 330 Parts removal 232 ...
Страница 234: ...b Set the spring over the plunger 4514 330 Parts removal 234 ...
Страница 240: ...3 Squeeze the latches B to release the left and right links B 4514 330 Parts removal 240 ...
Страница 262: ...c Bring the cable in front of the two cable holders near the ACM shaft 4514 330 Parts removal 262 ...
Страница 263: ...d Loop the cable behind the right cable holder e Twist the cable so that it forms a loop 4514 330 Parts removal 263 ...
Страница 267: ...11 Disconnect the two springs D D 4514 330 Parts removal 267 ...
Страница 269: ...15 Rotate and then remove the 2nd pickup bushing 16 Pull out the shaft and remove the ACM 4514 330 Parts removal 269 ...
Страница 284: ...3 Swing the right cover backward to remove 4 Remove the screw D 4514 330 Parts removal 284 ...
Страница 286: ...4514 330 286 ...
Страница 291: ...4514 330 291 ...
Страница 293: ...Assembly 1 Covers 4514 330 Parts catalog 293 ...
Страница 295: ...Assembly 2 Electronics 1 1 2 3 4 5 7 8 9 6 4514 330 Parts catalog 295 ...
Страница 297: ...Assembly 3 Electronics 2 4 3 2 1 6 5 4514 330 Parts catalog 297 ...
Страница 299: ...4514 330 Parts catalog 299 ...
Страница 300: ...Assembly 4 Frame 2 5 6 9 10 11 13 14 12 8 1 4 4 3 7 4514 330 Parts catalog 300 ...
Страница 302: ...4514 330 Parts catalog 302 ...
Страница 303: ...Assembly 5 Option trays 3 4 5 6 1 2 4514 330 Parts catalog 303 ...
Страница 306: ...4514 330 Parts catalog 306 ...
Страница 308: ...4514 330 308 ...
Страница 312: ...4514 330 312 ...
Страница 314: ...4514 330 314 ...
Страница 326: ...4514 330 326 ...
Страница 338: ...4514 330 Part number index 338 ...
Страница 342: ...4514 330 Part name index 342 ...