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CA10 is the error for the laser motor not rotating normally.

0-8 205
Timer to automatically
switch to the Auto
power save mode when
the equipment has not
been used
0: Invalid 6: 3min.
7: 4min. 8: 5min.
9: 7min.
10: 10min.

IQC stands for Image Quality Control.
You have to performed an image quality control enforcement
service mode 05-290

F070 is a communication error between LGC and SYS bds. Check both for latest versions . Lgc is V.21 and Sys. Ver. 331.
It could be a bad fax bd causing the sys not to see the lgc bd.

Replace the P/S

looking at the picture the black bar at the lower of the picture is not complete. Check the slit glass on the laser unit to see if it has a toner stain

The battery was dead. Is supposed to be above 3.0 V. After replacing bat do same thing again with the jumper but before format and partition hdd again . Install firmware to Sys board and hdd.
This...

Check the battery voltage (seen dead batteries cause this problem) If bat is ok check the Nvram on Sys bd. Remove it from socket check for any opened traces under it.

There is a jumper (blue) next to the battery. remove it for 15 min (with the machine off) After 15 min. replace it go into 0-8 service when ask to initialize sram do it should fix the problem

Latest version for MJ1023/24 is 29. There is a board call the IPC Board is plug in to the logic board. Is a small square pcb some of these bds are not compatible to some finishers. They need to be...

Try reloading the firmware for the Sys bd. You may have a bad Sys bd. Check also HDD connections. Check voltages from PS going into the Sys bd

Auto toner sensor adjust men for black is 0-5 code 2404 for all the colors (CYMK) is 2400

You will have to check your black color developer unit also check the developer material

C380 is for a black toner sensor anormality
Check that the auto toner sensor is not stained. check developer unit EPU unit and logic board.
does it happens with color and bw copies? If only happens...

You have a communication error between the DF and scanner board (slg).
Go to 0-8 enter 905 to see if the slg bd shows the firmware version. If not try reloading the firmware to the slg. If that...

Check the memory stick on the system board. See if you can reload the system board firmware

Try reloading the firmware of the system bd. Check also memory. See if the network connector leds are blinking if not you have a bad sys board

Reinstall the hard drive software. If that doesn't work you have to perfom
3 + C and select 3 (format HDD) and reinstall software