Ricoh B230 Service Manual page 346

No color
registration
errors
Result:
"0"
Color
registration
errors
B230/B237
The main scan
registration of Bk is
shifted.
The main scan
length of Bk is
shifted.
Low image density
on the output
The main scan
registration is shifted,
but only at the
central area of the
image on the output.
4-106
(see the note at the bottom of the
table).
2. Replace the BICU.
Abnormal SP setting value of
main scan: Bk
1. Adjust the value with
SP2-101-001.
Abnormal SP setting value of
main scan length detection: Bk
1. Adjust the value with
SP2-185-001.
Low pattern density
1. Do the forced process control
(SP3-011-001) or supply some
toner (SP3-015-xxx).
Defective ID sensor at center
Deformed center area on the
image transfer belt
Defective BICU
1. Replace the ID sensor.
2. Replace the image transfer belt.
3. Replace the BICU.
SM