Specifications

9.4 TONER DENSITY ADJUSTMENT
When: Customer wants to change the overall image
density of the copies.
Purpose: To change toner concentration inside
development unit.
Measure: SP Mode #33
How: Changes the ID pattern bias voltage and either
raises/lowers the toner supply threshold.
9.5 FIXED TONER 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
Measure: SP Mode #30
How: Turns on the toner supply clutch every copy cycle.
9.6 TONER SUPPLY RATIO SELECTION
When: The factory setting for toner supply amount is not
appropriate for the type of original in use.
Purpose: To adjust the toner supply amount
Adjustment
Standard:
Detect Mode : 15% (Factory Setting)
Fixed Mode : 7% (Factory Setting)
Measure: Detect Mode : SP Mode #31
Fixed Mode : SP Mode #32
How: Changes the toner supply clutch on period.
1 December 1990
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