Ricoh D129 - Page 498

Service Call Conditions
SM 6-9 D129/D130
Trouble-
shooting
324 D
Development paddle motor error
The machine detects a lock signal error from the development puddle motor
for 2 seconds after the drum motor has turned on.
 Overload on the development puddle motor
 Defective development puddle motor
 Defective harness
 Defective IOB
350 D
ID sensor pattern test error
One of the following readings occurred 10 times in the ID sensor output when
the ID sensor pattern was checked:
1) Vsp > 2.5V
2) Vsg < 2.5V
3) Vsp =0V
4) Vsg = 0V
 ID sensor connector defective
 Poor ID sensor connector connection
 I/O board (IOB) defective
 Poor writing of ID sensor pattern on the drum
 High voltage supply board defective
351 D
ID sensor Vsg test error
When the ID sensor was checked, the ID sensor output voltage is 5.0V while
the LED current value is 0.
 ID sensor defective or dirty
 ID sensor connector defective
 Poor ID sensor connection
 I/O board (IOB) defective
 Scanning system defective
 High voltage supply board defective
 Defect at the ID sensor pattern writing area of the drum