Ricoh D146 Service Manual page 592

Service Call 700-792
SC No. Level
D146/D147/D148/D149/D150
Error Name/Error Condition/Major Cause/Solution
§
During movement to home, the home position could not be
detected within a predetermined pulse (p0 pulse) (1st time
is jam notification, 2nd time is SC notification).
§
During movement from home, the home position was
detected for longer than a predetermined pulse (p1 pulse)
(1st time is jam notification, 2nd time is SC notification).
The return pulse to home and pulse coming from home during
normal operation are calculated and measured. The pulses
which are 1.5-2 times the normal operation pulse are taken as
p0 and p1.
§
Over current (board defective, harness short-circuit,
solenoid defective) (*721-03 only)
§
Motor defective (*excluding 721-03)
§
Connector disconnected (*excluding 721-03)
§
Overload (*excluding 721-03)
§
Encoder error (*720-10, 11, 17, 25, 44 only)
§
Home position sensor error (*Excluding 721-03, 10, 11, 17,
70, and 80)
§
Retreat sensor error (*721-42 only)
§
Needle jam (*721-44 only)
§
Home position sensor (folding blade HP) error (*721-52
only)
§
Home position sensor (folding cam HP) error (*721-52 only)
§
Paper surface sensor error (*721-70 only)
§
Replace the controller
§
Replace the harness
§
Replace the motor (*excluding SC721-03)
§
Reset the connector (*excluding SC721-03)
§
Replace the solenoid (*SC721-03 only)
§
Replace the home position sensor (*excluding SC721-03,
10, 11, 17, 80)
5-118 SM