OKI MC873

The test printing is used for printing test patterns stored in the PU. Other patterns are stored in the controller.

This test print cannot be used to check the print quality. Diagnosis for the abnormal print image should be performed in accordance with section 2.

1. Enter the self-diagnostic mode (level 1) and, until TEST PRINT appears on the panel, press the [2] or [8] button (the [2] button displays the next test option and the [8] button displays the preceding test option). Then press the [6] button.
2. A setting option used only in test printing appears on the panel. Press the [2] or [8] button until the option to select appears (the [2] button displays the next option and the [8] button displays the preceding option). Then press the [6] button. (Go to step 4 when set to its default, the option does not need to be set).
3. The setting item and the setting value is displayed in the panel. Pressing the [2] button displays the next setting and pressing the [8] button displays the preceding setting (the setting last displayed takes effect. By pressing the [4] button, the setting is accepted, step 2 being restored. Repeat step 3 when necessary.
4. When the [6] button is pressed With PRINT EXECUTE on the lower display after the operation in step 2, test printing with the setting value set in the steps 2 to 3 is executed. The test printing is cancelled by pressing the [#] button. When the printer detects any errors in alarm shown in initiating or running the test printing, it stops the printing and displays the error on the operation panel.
5. Repeat steps 2 and 4 when necessary.
6. Press the [#] button to end the test (the state if step 1 is restored).

Notes!

PAGE setting:

The input position is shifted with the [*] button or [#] button. This setting is increased by pressing the [2] button, and decremented by pressing the [8] button. Note the setting 0000 endlessly prints pages.

COLOR setting:

ON displays, with the press of the [6] button, the information shown below.

Print setting for each color:

The input position is shifted with the [*] or [#] button. This setting is switched between ON and OFF by the press of the [2] or [8] button. The display for the setting restored to the previous one with the press of the [4] button.

CUSTOM size setting:

The input position is shifted with the [*] button or [#] button. This setting is increased by pressing the [2] button, and decremented by pressing the [8] button.
* If a display value exceeds the configurable range, the setting value is unavailable.

• The following message appears when a test pattern is printed.
  P=***
  W=***
  P: Number of test-print pages (Unit: sheets)
  W: Belt temperature wait time (Unit: seconds)
• The displays are switched to the following by pressing the [2] button.
  U=***[###] H=XXX
  L=***[###] S=XXX
  U: *** = Center thermistor target temperature [Unit: ˚C]
  [###] = Center thermistor current temperature [Unit: ˚C]
  H: XXX= Heater thermistor current temperature [Unit: ˚C]
  L : *** = Lower thermistor target temperature [Unit: ˚C]
  [###] = Lower thermistor target temperature [Unit: ˚C]
  S: XXX= Site thermistor current temperature [Unit: ˚C]
• The displays are switched to the following by pressing the [2] button.
  T=***
  H=***%
  T: A measured environment temperature [Unit: ˚C]
  H: A measured environment humidity [Unit: %]
• The displays are switched to the following by pressing the [2] button.
  KTR=*.** YTR=*.**
  MTR=*.** CTR=*.**
  YTR, MTR, CTR and KTR indicate set transfer voltages for colors, respectively (in kV).
• The displays are switched to the following by pressing the [2] button.
  KR=*.** YR=*.**
  MR=*.** CR=*.**
  KR: BLACK transfer roller resistance value [Unit: uA]
  YR: YELLOW transfer roller resistance value [Unit: uA]
  MR: MAGENTA transfer roller resistance value [Unit: uA]
  CR: CYAN transfer roller resistance value [Unit: uA]
• The displays are switched to the following by pressing the [2] button.
  ETMP=***UTMP=***
  REG=****EXT=***
  ETMP: A parameter for correction of constant hopping motor speed (an environmental
  temperature) [Unit: DEC].
  UTMP: A parameter for correction of constant fuser motor speed (a target fusing
  temperature) [Unit: DEC].
  REG: A hopping motor constant-speed timer value (a set input/output value) [Unit: HEX].
  EXT: A fuser motor constant-speed timer value (a set input/output value) [Unit: HEX].
• The displays are switched to the following by pressing the [2] button.
  ID=**** BLT=****
  LVTH=xxx(***)
  ID: ID motor constant-speed timer value (I/O set value) [Unit: HEX]
  BLT: Belt motor constant-speed timer value (I/O set value) [Unit: HEX]
  LVTH : [xxx] = Low-voltage power temperature [Unit: ˚C]
  ([***]) = Low-voltage power thermistor scanning AD value [Unit: HEX]
• The displays are switched to the following by pressing the [2] button.
  BELT=xxx(***)
  BELT: xxx = Belt temperature [Unit: ˚C]
  *** = Belt thermistor scanning AD value [Unit: HEX]