Ricoh A172 - Page 397

Tech Service Bulletin No. AFICIO 5106/5206 - 005
Page 2 of 5
6. Select <1> SP Adjustment, press next and turn to page 15.
7. Select Print for SP Adjustment Print Out.
NOTE:
This will print an SP Adjustments sheet.
8. Refer to item 1. Potential Output on the SP Adjustments sheet (see example).
1. P o t e n t i a l O u t p u t
VD VL VB r VK
Bk
t : 527 156 414 3. 65 +13
a : 526 159 414 3. 80 -7 .
Example: Sp Adjustments Print Out
9. Under the VB column, circle the Target value for the effected color(s).
NOTE:
t : = target
10. Press the Previous Key until you are on SP Adjustment page 4. (P-con OFF Mode).
11. Add 200 volts to the VB data that was circled.
12. Enter this new value (VB on SP Adjustments sheet + -200) in the VB setting for the effected color(s).
NOTE: If VB is -400 on the Adjustment sheet adding the -200 in the step above will equal -600
13. Then add 155 volts to the VB data that was circled.
14. Enter this new value (VB on SP Adjustments sheet + 155) in the VG setting for the colors exhibiting
fireflies.
15. Go to SP Special Features page 1, Auto Process Control Self Check and select Reset.
16. Enter "Copy in SP Mode".
17. Make (10) 11 x 17 inch copies of the effected color(s) of the 255 Full Dot Test Pattern.
NOTE:
1: If the Print Key turns red during this step, do not turn the machine "OFF" ; it may be adding toner.
2: This step removes weak carrier from the Development Unit.
18. Go to Sp Adjustments page 1 and set Auto Process Control Self Check to PID.
19. Go to SP Test Mode page 2 to reset the test pattern condition. This turns "OFF" the Test Pattern.
20. Enter SP Data Output page 1 and view the VT data
21. Select the "Copy in SP Mode" and make (10) 11 x 17 copies of the C-4 Test Chart in Full Color Mode.
Continued...
Example: Black is
exhibiting carrier type
fireflies. Circle the
target for VB.