User guide
Table Of Contents
- Table of contents
- Introduction
- System overview of the 4635 LPS
- Using the PC UI
- Paper facts
- System control tasks
- Job control tasks
- Online printing tasks
- Offline printing tasks
- UNKNOWN
- Power on the open-reel tape drive
- Load an open-reel tape
- Load an open-reel tape by hand
- Unload an open-reel tape
- Unload an open-reel tape during a power failure
- Handle open-reel tapes
- Power on the 18 track 1/2 inch cartridge tape drive
- Unload a 1/2 inch cartridge
- Power off the 18/36 track 1/2 inch tape drive
- Handle cartridge tapes
- Load a 1/4 inch cartridge tape
- Handle 1/4 inch cartridge tapes
- Load a floppy disk
- Handle floppy disks
- Start an offline print job
- Rewind/unload tape
- Space
- Move
- UNKNOWN
- HIP printing tasks
- Status and print tasks
- File control tasks
- Maintenance tasks
- Precautions you should take
- Cleaning supplies
- Maintaining the printer
- Replacing the dry ink cartridge
- Replacing the dry ink waste container
- Adding fuser agent
- Cleaning the sensors and the reflecting surfaces
- Tape drive cleaning schedule
- Cleaning precautions—READ BEFORE CLEANING
- Cleaning procedures
- When to clean the tape drive
- Cleaning procedures
- How to clean the floppy disk drive
- Installing the custom transfer assist blade
- Setting tray size with the custom transfer assist blades
- Problem solving tasks
- LPS problems
- Printing problems
- Paper jams
- Incorrect paper size message
- Stacker bin problems
- System controller problems
- Tape drive does not perform self-load routine
- “OK” appears on the tape drive message display, but the loading door is closed
- Basic recovery procedure
- Initial program load (IPL) procedure fails
- You cannot insert a cartridge
- Tape does not unload
- Unloading a cartridge after a power failure
- Tape winds completely out of cartridge
- Message display is blank
- Tape drive does not become ready
- LPS problems
- MICR operating procedures
- Bar code operating procedures
- A. Meter reading and reporting
- B. Supplies
- Glossary
- Index

PROBLEM SOLVING TASKS
Blank display (system controller terminal)
To prolong the life of the system controller display, the light is
turned off and the display becomes blank when it has not been
used for 15 minutes. As soon as any key is pressed, the image
returns exactly as it was prior to turning itself off. There is no
loss of information.
If there is no display when you press a key, check that the
ON/OFF switch on the right side of the display (just below the
screen) is in the ON position. Also check the brightness control
(intensity adjustment lever); slide it to the right to make the
screen brighter. If the display is turned on, the lever is all the
way to the right, and the display screen is still blank, place a
service call.
Rasterization messages
When a line of print is too complex for the system to process
normally, the output processor directs the image generator to
produce a bitmap image instead of aborting the page. This
process can take anywhere from 3 to 20 minutes. The following
messages appear in the Messages window of the PC UI or on the
system controller display:
OS1620 Local density problem has caused a printer cycle down.
OS1625 Local density problem rasterization in progress.
Note: Do not press any keys until the process is complete. Any
commands normally allowed during print mode (for example,
FEED, JOBS, PSTATUS, SELECT, and so on) entered while
rasterization is in progress are delayed until the rasterization
process is finished. When the process is complete, the following
message appears:
OS1627 Local density problem rasterization is complete
The printer now cycles up and prints the problem page.
Power failure
If there is a power failure and your LPS is online to a host
computer, the PC UI or system controller display (non-U.S.
markets, only) should prompt you to enter “C”. (It is possible
that the message will not appear. Enter “C” anyway at the
system controller keyboard or in the Messages window of the PC
UI.) If there is no response from the system after you enter “C”,
press the System Power Off and System Power On buttons on
the operator control panel to reboot the system.
In the event of a power failure, you must initiate recovery of the
data files to recover the data content. The system asks if you
want it to attempt recovery. If you do, key in <Y> (yes), or
select the Yes button.
It is possible that not all data can be recovered; the amount of
recovery that can be accomplished depends on when the last
system checkpoint was taken because of the method used by the
system to restore its dynamic (active) memory.
12-28 XEROX 4635 LASER PRINTING SYSTEM OPERATOR GUIDE