Table of Contents
Advertisement
2.7 Toner Density Recovery
When:
Vsp is extremely high (toner density low).
To maintain correct toner density
Purpose:
Target:
Vsp < 0.5 volts
Measure:
SP 60
The copier runs and the toner supply clutch turns on (100%)
How:
until Vsp falls below 0.5 volts. Vsp and Vsg are displayed
on the guidance display. ("V0" is Vsg, "V1" is Vsp)
1. Set SP 60, then press the Enter key and the Start key.
2.8 Fixed Supply Mode Selection
When:
A problem with the ID sensing system cannot be corrected during a service call.
(Detect supply mode does not function.)
Purpose:
To leave Detect mode and manually turn on the toner supply system
Target:
Fixed supply mode
Measure:
SP 30
How:
Turns on the toner supply clutch every copy cycle.
1. Set SP 30 to select fixed supply mode.
2.9 Toner Amount Changing
The factory setting for toner supply amount (30%) is not appropriate for the
When:
type of originals in use.
Purpose:
To adjust the toner supply amount
Target:
Detect mode: 30 (factory setting), 15, 45, or 60%
Fixed mode: 7, 4, 11, or 14%
Measure:
Detect Mode: SP 31 Fixed Mode: SP 32
How:
Changes the toner supply clutch on period.
2.10 ID Pattern Bias Voltage Adjustment
When:
Customer wants to change the overall image density of the copies.
Purpose:
To change toner concentration inside development unit.
Target:
Bias Voltage = 500 (factory setting), 380 (lightest) 470 (light), 530 (dark)
Measure:
SP 33
How:
Changes the ID pattern bias voltage and either raises/lowers the toner supply
threshold.
5-19
31 August 1989
Advertisement
Chapters
Table of Contents
