AR-280 (serv.man9). AR280 285 335 Service Manual-Installation and Set Up - Sharp Copying Equipment Service Manual (repair manual). Page 9

Fix the toner hopper to the developing unit with the fixing screws
(4 pcs.) and connect the 5P connector between the toner hopper
and the developing unit. At that time, put the 5P connector har-
ness in the harness clamp attached to the toner hopper, and
process the harness.

Install the developing unit to the copier body and push it into the body
completely. Close the developing unit lever and the front cabinet.

Note: Be careful that this procedure is different from the conven-

tional simulation.

Turn on the power switch of the copier.

Note: Before executing SIM 25-1 or SIM 25-2, be sure to check that

the main charger unit is securely inserted.

Execute SIM 25-2

The touch panel shows the following display.

Touch the EXECUTE on the touch panel and execute SIM 25-2.

Adjustment is automatically made with the toner density sensor
output value displayed. After 3 min from starting stirring, the toner
density sensor is sampled 16 times and the average value is
stored as the toner density adjustment value.

Note: When the simulation is canceled before completion, automatic

reading cannot be made. Be careful not to cancel before com-
pletion.

Press the 

 key to cancel SIM 25.

Note: SIM 25-2 must be executed only when developer is replaced.

For checking of the developer adjustment value in servicing,
use SIM 25-1. (Use of SIM 25-2 to check the developer adjust-
ment value in servicing may cause abnormality in the toner
density transition.)
Be careful that this simulation is different from the conven-
tional simulations.

Open the front cover. 

2

5

2

P  

Program
key

Interruption
key

Clear
key

Interruption
key

Start key

Start key

C

CA

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