Id Sensor Error Analysis (Sp 2221); Display Aps Data (Sp 4301 1) - Ricoh K-C3 Service Manual

B245/B276/B277/B268/B269 Service Manual

ID Sensor Error Analysis (SP 2221)

The image quality may become very bad when the ID sensor does not operate properly.
However, there is no such SC code that indicates ID-sensor malfunction; instead, SP 2221
shows you some information on the ID sensor. Check this information when the image
quality is not very good.
The table lists the information shown with SP 2221 (ID Sensor Error Analysis).
SP
SP 2221 1 Vsg
(VG in the display)
SP 2221 2 Vsp
(VP in the display)
SP 2221 3 Power
(PW in the display)
SP 2221 4 Vsdp
SP 2221 5 Vt
SP 2221 6 Vts

Display APS Data (SP 4301 1)

- Sensor Positions -
The APS (auto paper select) sensors are arranged as shown in the diagram.
- Reading the Data -
Example 1
Paper Size: 11000000 8
DF Open: 1
Example 1 indicates that the paper size and its orientation is "8
Error condition
Vsg < 2.5V or
(Vsg – Vsp) < 1.00V
Vsp > 2.5V or
(Vsg – Vsp) < 1.00V
Vsg < 3.5V
when maximum
power (979) is
applied
No Error Conditions
Vt > 4.5V or
Vt < 0.2V
1
/ x13
2
Possible cause
ID sensor defective
ID sensor dirty
Drum not charged
Toner density very low
ID sensor pattern not
created
ID sensor defective
ID sensor dirty
Drum not get charged
TD sensor defective
Example 2
Paper Size: 00110000 A4
DF Open: 0
18-Jan-06
Remarks
Power source for the
ID-sensor light
1
/ x 13 SEF," and that the
2
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