Tektronix Phaser 550 Service Manual page 210

9
Checks and Adjustments
Table 9-2 Status code meanings (cont'd.)
Status Front Binary
State Panel
Hex 7 . . .
Status - 44
Life
Warning
Status
Status - 44 40 0100 0000
Example
9-28 Phaser 550 Color Printer
Meaning/Description
0
This status shows the details of the life warning mode of the customer replaceable units.
The state of bits 1 through 4 are determined by unit life counters. These unit life counters
are reset using the appropriate unit life counter reset command. This also relates to the
detailed status of Status - 0 Bit 2, Status - 4 Bit 4.
0. Odd parity.
1. 1 = The imaging unit is reaching its end of life. This warning does not inhibit printing
but signals the beginning of continuous image degradation. The image unit life counter
is incremented by one for each exposure of each color until the counter reaches
40,000, which then sets this status warning bit.
0 = The imaging unit is OK
2. 1 = The pre-transfer charger is reaching its end of life. This warning will not inhibit
printing but will signal the beginning of continuous image degradation. This process
units life counter is incremented by one for each image (not page) when the
pre-transfer corona is enabled until the counter reaches 40,000, which then sets this
status warning bit.
0 = The pre-transfer charger is OK.
3. 1 = The transfer roller is reaching its end of life. This warning will not inhibit printing,
but paper jams may occur if printing continues. The second bias transfer roller unit life
counter is incremented by one for each page (not image) by the PURGE signal until the
counter reaches 40,000, which then sets this status warning bit.
0 = The second bias transfer roller is OK.
4. 1 = The fuser is reaching its end of life. This warning will not inhibit printing, but paper
jams may and over heating will occur if printing continues. The fuser unit life counter
is incremented by one for each page (not image) by the PURGE signal until counter
reaches 40,000, which then sets this status warning bit.
0 = Always set to 0.
5. Not used.
0 = Always set to 0.
6. 1 = The imaging unit's toner bin is full. The imaging unit must be replaced.
0 = The imaging unit's toner bin is not full.
7. 1 = A communication error has occurred.
0 = There is no communication error.
The existing imaging unit is OK.
The existing pre-transfer charger unit is OK.
The existing second bias transfer roller is OK.
The existing fuser is OK.
The imaging unit's waste toner bin is full.
There is no communication error.