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OKI B420

Maintenance Mode. Engine maintenance mode

  1. To enter Engine maintenance mode, hold down the "MENU▲" and "MENU▼" button while turn on the power switch. Select "ENGINE DIAG MODE".
  2. The function of this mode is selected from Menu.
  3. The release method of this mode is different by setting.
  4. The following content is included in Engine maintenance mode.
Category (1st Line) (16 Characters) Item (1st Line) (16 Characters) Value (2nd Line) Default Function
LED HEAD   -16
-15~
~
-1
0
+1
~
+15
* Set the drive time of LED Head.
STRB TIM   0.50
0.54
0.42
0.46
* Set by the relative value between strobe at 600×1200DPI and strobe at 600×600DPI.
OPT HEAD   ODD/EVN STEP3 * In this printer, this setting is not used.
PRINTPOS   0  mm
+0.5mm
~
+3.5mm
-4.0mm
~
-0.5mm
* Set the start position of printing.
LENSHIFT   0  mm
+0.5mm
~
+3.5mm
-4.0mm
~
-0.5mm
* Set the offset of picture elastic (The minor adjustment. of LSYNC cycle).
DRUM CNT   T  nnnnnn 0 Drum Count Total Display
Display it on LCD about the total drum- rotating count that is counted by the engine part.
DRUM CNT   nnnnnn 0 Drum Count display
Display it on LCD about the drum- rotating count from drum replacement that is counted by the engine part.
PAGE CNT   nnnnnn 0 Page Count display
Display it on LCD about the total printing page count that is counted by the engine part.
DOT CNT   T  nnnnnn 0 Page DotCount Total display Display it on LCD about the printing
DotCount that is counted by the engine part.
DOT CNT   nnnnnn 0 Page DotCount display
Display the DotCount from the new toner cartridge installed till now
T1 POS   0  mm
+1  mm
~
+7  mm
-8  mm
~
-1  mm
* Set Paper-feeding amount that is from the standard tray.
(Paper striking amount setting)
T2 POS   0  mm
+1  mm
~
+7  mm
-8  mm
~
-1  mm
* Set Paper-feeding amount that is from the second tray.
(Paper striking amount setting)
T2 TBL   No. 1
No. 2
No. 3
* In this printer, this setting is not used.
EF POS   0  mm
+1  mm
~
+7  mm
-8  mm
~
-1  mm
* Set Paper-feeding amount that is from the multipurpose feeder.
(Paper striking amount setting)
EF TBL   No. 1
No. 2
No. 3
* In this printer, this setting is not used.
DUPLEX POS   0  mm
+1  mm
~
+7  mm
-8  mm
~
-1  mm
* Set Paper-feeding amount that is from the DUPLEX.
(Paper striking amount setting)
CH ADJ   ENABLE DISABLE * In this printer, this setting is not used.
SB2 ADJ   ENABLE DISABLE * Set ENABLE/DISABLE of the offset theory of SB2 voltage setting value.
CH VOLT   -3
-2
-1
0
+1
+2
+3
* The converting of CH default voltage value (It should reflect both ENABLE/ DISABLE of offset theory of CH voltage setting value.
SB2 VOLT   -3
-2
-1
0
+1
+2
+3
* The converting of SB2 default voltage value (It should reflect both ENABLE/ DISABLE of offset theory of voltage setting value
CH V ADJ   -5
-4
-3
-2
-1
0
+1
+2
+3
+4
+5
* In this printer, this setting is not used.
CH V MAX   -2
-1
0
* Maximum CH voltage offset
CH V MIN   -1
0
+1
+2
* Minimum CH voltage offset
TR1 CRNT   -3
-2
-1
0
+1
+2
+3
* Current value converting of TR1_I at TR resist lead
0X MODE   ENABLE DISABLE * [A/C Zero Cross Phase Control ENABLE/DISABLE]
Select whether operate phase control.
0X TC   AUTO FIX * [TC Fixed/Varied selection]
Select Tc value (Zero cross signal period) that is used for parameter calculating of phase control.
0X TP   AUTO FIX * [TP Fixed/Varied selection]
Select Tp value (Zero cross signal pulse width) that is used for parameter calculating of phase control.
TC varied mode: Use calculated value TP fixed mode: Use fixed value (1ms)
0X ADJST   0
1
2
3
4
5
6
7
-8
-7
-6
-5
-4
-3
-2
-1
* [ON DELAY OFFSET]
ON DELAY OFFSET TABLE SELECTION
At setting HEATON Signal Output Time, set the value that the corresponding table value has been added to the resistor. 0: 0.0ms
1: 0.5ms
2: 1.0ms
3: 1.5ms
4: 2.0ms
5: 2.5ms
6: 3.0ms
7: 3.5ms
-8: -4.0ms
-7: -3.5ms
-6: -3.0ms
-5: -2.5ms
-4: -2.0ms
-3: -1.5ms
-2: -1.0ms
-1: -0.5ms
      By ENGINE TEST displaying, press SELECT SW, SUBITEM is displayed on the 1st  Line.
ENGINE TEST EP TEST OFF PAPER CONNECT * In this printer, this setting is not used.
PRT DUTY 1/1
1/10
1/20
1/50
* Set Duty that is used for Motor Accelerating Test in the factory. Setting as 1/n means that after 1 piece of paper printing, it makes the engine idles away for n-1 piece of paper amount.
MODE 00
01
02
~ FD FE FF
* The setting is irrevocable because it is used for engine debug mode.
If set it out of default (00), the printing stops.
ENGINE RESET - - - Reset the following counters that are used in engine part.
Drum Total Counter
  1. Drum Counter
  2. Printing Total Page Counter
  3. But, Printing Total Page Counter is only reset for the count under 500. (This limit is not compliant in the case of reset for PJL Command)
Error Code
Service Mode, Troubleshooting
Parts Catalog
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