I have message call service(M1) So how to clear this problem

Sir/Mam there is no M-1 on that model are sure? Does it say PC DRUM needs replacing in the upper left of the screen? Or a code like C-0958 (example)

Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/normanj_7893313f0751935f

Utility button then stop 00 stop 01. Then use arrows to clear data screen then clear counters. Has the drum and developer been replace do that before clearing the counters

Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/normanj_7893313f0751935f

replace the drum cartridge, also clear maintenance counters in service mode

Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/normanj_7893313f0751935f

M1 is a counter for maintenance need to get service mode access to clear the counter and clear the message.

Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/normanj_7893313f0751935f

To delete data from memory you store 0 in the memory
To clear Memory 1 (M1) store 0 in it
Para borrar la memoria M1, almacenar 0 en M1 (Google translate)
0 [STO] 1 clears M1
0 [STO] 2 clears M2
0 [STO] 3 clears M3

The M1 in the display remind you that the M1 memory contains a number that is not equal to 0. So, to get rid of M1, M2, or M3, you shoild store the value 0 in them.
0 [STO] 1 stores 0 in M1, and thus erases its contents: M1 disappears
0 [STO] 2 stores 0 in M2, and thus erases its contents:M2 disappears
0 [STO] 3 stores 0 in M3, and thus erases its contents:M3 disappears.

[OFF] ON/C] clears display, errors, all pending operations, constant calculations K, and STAT, but not M1, M2,and M3. Sets DEG angle units, floating-decimal format.
To clear memory M1 : Store 0 in 1
0 [STO] 1 clears M1
0[STO] 2 clears m2
0 [STO] 3 clears M2

Press 0 [STO] 1 to clear the Memory M1. Indicator M1 will disappear.
Press 0 [STO] 2 to clear the Memory M2. Indicator M2 will disappear.

Press Utility / Counter -> {STOP}{0}{0}{STOP}{0}{1}, now you should be in Service Mode. Go to Service Choice - > IU LIFE STOP MODE -> and choose CONTINUOUS.

How to clear an M1 code.
Solution:
To clear an M1 code, go to Counter/Maintenance/Maintenance Set and press the Clear key.
hope that help