Sharp AR-651 Service Handbook page 80

4. Check if the distance E is in the range of 52 ± 0.5 mm.
5. If not, change the value taking the following procedure and measure the distance E again.
<Procedure> (Adjustment mode) (Enter the code [498] with the digital keys) Press [1] [START]
(Enter a value (acceptable values: 0 to 255) with the digital keys)
Press the [SET] or the [INTERRUPT] key to store the value in the RAM.
"100% A" is displayed.
Press [3] [ENERGY SAVER]
(Grid patterns are printed out on both sides of the paper)
*The larger the adjustment value, the longer the distance E becomes
(approx. 0.5 mm/10 steps).
AR-651/810 ADJUSTMENT 3 - 10