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This appears to be a Ricoh printer error message. Error messages are generally brand specific.
One website offers the following about this error message:
Code
SC121
Description
Scanner home position error 2
The scanner home position sensor does not detect the on condition during initialization or copying.
Causes
• Scanner home position sensor defective • Scanner drive motor defective • IOCSS board defective • Scanner home position sensor harness defective bq
In other words, it appears to be a message that a physical component of the printer is blown, bad, defective. That leaves you looking up the warranty and weighing the cost of repair or replacement. As you have not identified the model of the printer, it is impossible to weigh the cost/reward of repair.
Error code 120 is scanner home position sensor problem. If it's a recurring problem, here are some troubleshooting tips:
SOLUTION:
Turn the main switch off and on.
Check the wires between Home Position sensor and the SBU.
Fix scanner board or the SBU .
Check the wires between scanner motor and the scanner I/O board
Fix the scanner motor.
Fix the Home Position sensor.
Fix pulley, timing belt, the scanner wire,
Fix the carriage.
E - 22 Scanner home position sensor error.Possible causes: scanner home position sensor failure scanner motor defective incorrect scanner ddrive wire position Remove the exposure glass and verify the wire and the sensor actuator. Turn DIP switch 101 - 1 ON and press START key to run free the scanner.DIP switch is located on PWB board in rear area,remove the rear cover.
This code means machine's scanner home possition error. Try to check scanner home possition sensor if fixed in its possition. if not try to check scanner lamp unit movement .
The following are the possible causes of this error -yes you will need a technician:
• Scanner home position sensor defective • Scanner drive motor defective • Scanner home position sensor connector defective • Scanner drive motor connector defective • IOB board defective
The error is from the scanner. It is possible the scanner lock on the underside of the scanner has shifted and not allowing the scanner to correctly return to the home position. Try Checking the scanner lock and make sure it is not in the locked position. Then turn off and on your machine while holding the menu/set button. the machine will come up either with an error or in maintenance mode. either way enter 99 and see what you get. Maintenance mode is a dangerous place to play around in. 99 exits maintenance mode. 91 resets all parameters to factory setting except stored locations like phone numbers and location information. 01 resets every thing to factory. DO NOT CHANGE ANYTHING IN MAINTENANCE MODE. CCDHP is scanner home position sensor. It will probably reset just by turning the machine off and on.
good luck.
Error: Scanner Locked
Cause: The scanner glass’s sensor does not move to the home position.
Action:
1. turn off, and then on
2. if (1) doesn't work, chek sensor
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