Ricoh D082 MPC7501 V-C3

If the image density is too light, or if the machine fails to release the "Toner End" alert, this can be caused by one of the following problems:

• Developer Filling (SP3814) was not successful.
• Developer Setup (SP3811) or TD sensor initialization (SP3801) was not done or was not done correctly after Developer Filling (SP3814).
• Developer Setup (SP3811) or TD sensor initialization (SP3801) was done more than once.

1. First, do the following SP value checks.

Check 1-1. SP3815-001 (Developer Fill Disp Result) displays "1111"? "1111" should be displayed for all colors, K, M, C, Y reading from left to right.

Result	Comment
1	Success
4	Factory default (Nothing has been done)
7	Developer Filling (SP3814) has been performed more than once for the color, whose developer has already completely filled the development unit.
9	Failed. No developer inside the development unit, or the amount of developer inside the development unit is insufficient.

Check 1-2. SP3817-001 to 004 (Developer Filling Admission) are all "0"?
"0000" should be displayed for all colors, K, M, C, Y
"0" = Developer filling has completed successfully.
"1" = Developer Filling has not completed successfully yet.
Check 1-3. SP3812-001 (Developer Setup Execute): displays 1111?
"1111" should display for all colors, K, M, C, Y, reading left to right.

Result	Comment
1	Succeeded.
2	Interrupted  abnormally
3	Vt lower limit error
4	Default (nothing done yet)
8	Toner supply error
9	Vtcnt error

2. Next, do the following procedures according to the results of SP value checking.

Case 1	If one of Check 1-1, Check 1-2, or Check 1-3 failed do Procedure 1.
Case 2	If all of Check 1-1, Check 1-2 and Check 1-3 all succeeded, the toner supply mechanism may be broken. First do Procedure 2, and then do Procedure 1.
Case 3	If only Check 1-2 did not succeed (returned "1"), do Procedure 3 as a temporary solution. However, for a permanent solution be sure to do Procedure 1 after performing Procedure 3. Otherwise, the image density will be abnormal.

Procedure 1

1. Replace the toner cartridge causing the problem (density too light or no "Toner End" release) with a new toner cartridge.
   • After the "Toner End" alert appears for a color, this "Toner End" information is written into the ID chip on the toner cartridge, even though a lot of toner may remain inside the cartridge. This means that machine will detect that the toner cartridge is empty.
2. Follow the procedure in the service manual to replace the developer for all colors.
3. After the TD sensor initialization (SP3801-001 to 006) has been completed, check these SP values:
   • SP3812-001 = 1111 (Display Result of Developer Setup Execution)
   • SP3821-001 = 10101010 (Display Result of Process Control)

Procedure 2

1. 1.Replace the toner cartridge causing the problem (density too light or no "Toner End" release) with a new toner cartridge.
   • After the "Toner End" alert appears for a color, this "Toner End" information is written into the ID chip on the toner cartridge, even though a lot of toner may remain inside the cartridge. This means that machine will detect that the toner cartridge is empty.
2. Do SP2251-001 to 004 "Forced Toner Supply for the color (K, M, C, or Y) for the color whose image density is too light.
   • To avoid damage to the toner supply mechanism, never perform "Forced Toner Supply for K, M, C, or Y more than three times.
3. Check the image density to see if it is darker.
4. Do SP3820-002 (Manual ProCon).
5. Do SP3821-001 (ProCon OK?) to confirm that SP3820-002 succeeded. YOu should see "10101010" displayed if SP3820-002 executed successfully.
   • If SP3820-002 displays any values other than "10101010" (successful execution), the toner supply mechanism may be broken. Replace the toner supply mechanism.
6. 6.If SP3820-002 shows "10101010" (successful execution), perform Steps 2 and 3 of Procedure 1 for the color causing the problem (light image or failure to release from "Toner End" alert).

Procedure 3

• For this procedure there must be developer in the development unit.

1. Replace the toner cartridge causing the problem (density too light or no "Toner End" release) with a new toner cartridge.
   • After the "Toner End" alert appears for a color, this "Toner End" information is written into the ID chip on the toner cartridge, even though a lot of toner may remain inside the cartridge. This means that machine will detect that the toner cartridge is empty.
2. Do SP3817-005 (Developer Filling Admission: Clear). This SP forces the settings of SP3817-001 to 004 to change from "1" to "0" and forces toner supply from toner cartridges to toner sub hoppers.
3. Do SP2251-001 to 004 (Forced Toner Supply K, M, C, or Y) for the color whose image density is too light.
   • To prevent damaging the toner supply mechanism, never perform "Forced Toner Supply K, M, C, Y" more than three times.
4. Check the image density to see if it is darker.
5. Do SP3820-002 "Manual ProCon".
6. Do SP3821-001 "ProCon OK?" to confirm if SP3820-002 succeeded. You should see "10101010" displayed if SP3820-002 executed successfully.
7. If SP3820-002 shows "10101010" (successful execution), perform the Steps 2 and 3 of Procedure 1 for the color causing the problem (light image or failure to release from "Toner End" alert).