Service manual

ENGINE SERVICE MODE
SM 5-41 G130/G131
Service Tables
[M/A for LD] M/A Target for LD Correction ([Color])
3904
Adjusts the M/A value used during the LD correction mode. This value is effective
when SP3-125-2 “LD Control” is set to “LD Power”.
Adjusting this data effects the image reproduction especially in highlight areas.
3904 001 Printer [K] *BCU
3904 002 Printer [Y] *BCU
3904 003 Printer [M] *BCU
3904 004 Printer [C] *BCU
[0 to 1.00 / 0.12
/ 0.01 mg/cm
2
/step] DFU
3905
[M/A Target] M/A Target for Paper Interval Process Control
3905 001 Intrvl [K] *BCU
3905 002 Intrvl [Y] *BCU
3905 003 Intrvl [M] *BCU
3905 004 Intrvl [C] *BCU
[0 to 1.50 / 0.25
/ 0.01 mg/cm
2
/step] DFU
Adjusts the target amount of each toner on paper
sheets. These values are optimized before
shipment. Do not change the values. Changing
these values does not affect toner density on
paper sheets.
3905 005 Intrvl [K] *BCU
3905 006 Intrvl [Y] *BCU
3905 007 Intrvl [M] *BCU
3905 008 Intrvl [C] *BCU
[0 to 1.50 / - / 0.01 mg/cm
2
/step]
Displays the amount of each toner on the paper. A
problem may have occurred in the printer engine if
the value is high or low (i.e., if the difference
between SP3-905-1/2/3/4 and SP3-905-5/6/7/8 is
larger than ±0.03 mg/cm
2
).
Possible problems: Defective TD sensor, defective
ID sensor, toner near-end (if the value is lower
than the target), defective toner supply
mechanism
3905 009 Gamma Correct [K] *BCU
3905 010 Gamma Correct [Y] *BCU
3905 011 Gamma Correct [M] *BCU
3905 012 Gamma Correct [C] *BCU
[–0.50 to 0.50 / 0
/ 0.01 mg/cm
2
/step] DFU
3906
[PC SelfChk] Process Control Self-checks
Job End *BCU [0 to 999 / 200 / 1 sheet/step] 3906 001
Specifies the execution timing of the job end process control self-check.
The job end process control self-check is automatically done after a job is completed
when 200 prints has been made since the last self-check.
The counter for the job end process control self-check resets when one of the
following process control self-checks is done.
• Initial
• Interval: Interrupt
• Non-use Time
• During Toner End
When K prints are made, the number of prints is calculated with the K coefficient in
SP3-906-5.
Interrupt *BCU [0 to 999 / 0 / 1 sheet /step] 3906 002
Specifies the execution timing of the interrupt process control self-check.
The interrupt process control self-check is automatically done if the number of prints
in the job exceeds the number set in this SP mode. When the print job is completed,
the counter is reset, even if the interrupt self check did not occur.
When K prints are made, the number of prints is calculated with the K coefficient in
SP3-906-5.