Ricoh D131 - Page 472

SC100: Scanning
SM Appendix 2-5 D131/D132/D133
Appendix:
Service Call
Conditions
SC121
D
Scanner home position error 2
The scanner HP sensor does not detect the ON condition during
initialization or copying.
-
 BCU, SIOB defective
 Scanner motor defective
 Scanner HP sensor defective
 Harness between BCU, SIOB, scanner motor disconnected
 Harness between scanner HP sensor and BCU disconnected
 Scanner wire, timing belt, pulley or carriage installed incorrectly.
SC141 D
Black level detection error
The black level cannot be adjusted within the target during auto gain
control.
 Harness between SBU – SIOB is disconnected.
 Harness between SIOB – BCU is disconnected.
 Defective SBU
 Defective BCU
 Check the SBU-SIOB/SIOB-BCU harness connections or replace
these harnesses.
 Replace the SBU.
 Replace the BCU