Ricoh MP C2504 Field Service Manual page 808

SC No. Type
SC No. Type
SC370-01 D
Error Name/Error Condition/Major Cause/Solution
Check if the SC occurs by turning the power OFF then ON. If the SC
occurs again, do the following steps. Check if the SC reoccurs by cycling
the power after each step.
1. Check if all connectors related to TD sensor are connected securely.
Replace the connectors if they are disconnected, or loose.
2. Check the Development Unit for the following points and recover or
replace it if there are any defects.
• Gear comes off
• Development unit is not installed correctly
3. Check the TD sensor and recover or replace it if there are any
defects.
4. Check the values of SP3-030-061 to 064 (Init TD Sensor :Exe Initial
mu count). If they are initial, perform the TD sensor adjustment
(SP3-030-001 to 006).
5. Check the Toner Supply Unit and recover or replace it if there are
any defects.
• Toner bottle driving error (left rotating)
6. Check the harness for TD sensor. Replace the harness if it is
disconnected, or damaged.
7. Replace the BCU if the SC cannot be recovered even after
executing steps 1 to 6.
Recovery Confirmation Procedure
1. Turn ON the main power, and then print a sheet.
2. Execute SP3-320-***(TD.Sens:Vt :Disp: Current: CMYK) to check
the output value of the TD sensor.
3. Execute SP3-211-004 (Vt Limits Err :Disp Lower Threshold) to check
the lower limit value.
• Abnormal if the TD sensor output value is lower than the lower
limit value
• Normal if the TD sensor output value is equal to or larger than
the lower limit value
Error Name/Error Condition/Major Cause/Solution
TM (ID) sensor calibration error (F)
Service Call 312-396
799