Service manual

PRINTER ENGINE SERVICE MODE 30 July, 2001
5-24
3
Mode No.
(Class 1, 2, and 3)
Function / [ Setting ]
[Dev. g Target] Development Gamma Target ([Color])
Adjusts the development gamma by changing the Vref value used for toner density
control.
Vref is automatically corrected so that the gamma measured during the process control
self-check becomes “the value set with this SP mode ± 0.15”
1[K] *
[ 100 to 300 / 155 / 1 mg/cm
2
/KV / step ] DFU
2[Y] *
3[M] *
120
4[C] *
[ 100 to 300 / 125 / 1 mg/cm
2
/KV / step ] DFU
[Dev. g Display] Development Gamma Display ([Color])
Displays the development gamma measured during the process control self-check.
1[K]
2[Y]
3[M]
121
4[C]
[ 0 to 10000 / - / 1 mg/cm2/KV /step ]
Normal Range: 1.00 to 2.00
[Vk Display] Vk Display ([Color])
1[K]
2[Y]
3[M]
122
4[C]
Displays the current Vk value.
[ -255 to 255 / - / 1/step ]
Normal Range: -50 to 50
[Vref Display] Current Vref Display ([Color])
1[K]
2[Y]
3[M]
123
4[C]
Displays the current Vref value.
[ 0.0 to 5.0 / - / 0.1V/step ]
[Process Contr.] Process Control
1 ON/OFF * Enables or disables process control.
[ 0 or 1 / 1 / 1/step ] Alphanumeric
0: OFF (Use the fixed values for VD, VL and VB
set with SP2-001, SP2-103, and SP2-201.)
1: ON
2 LD Control * Selects the LD control mode.
[ 0 to 2 / 1 / 1/step ] Alphanumeric
0: Fixed (at the value in SP2-103)
1: Controlled by process control
2: Controlled by LD power selection
125
3 Auto TD Adj. * Specifies when to perform the Auto Toner Density
Adjustment. When performing the Auto Toner
Density Adjustment, the machine supplies or
consumes toner so that the development gamma
is within ± 0.15 of the gamma target.
[ 0 to 3 / 0 / 1/step ] Alphanumeric
0: Disable
1: Initial & Non-use self-check
2: Job end & Non-use self-check
3: Initial & Job end & Non-use self-check
Do not adjust unless advised by senior technical
staff.