Ricoh D025 Service Manual page 552

Process Control Error Conditions
No. Result
8 Vcnt error 2
9 Vcnt error 3
The machine starts developer initialization after you set "Enable" in SP3-902-005,
006, 007, or 008. Developer initialization automatically resumes when you open
and close the front door or turn the main switch off and on if an error other than
Error 8 occurs.
D023/D025
Description
Vt is more than 0.7V
when Vcnt is 4.3V and
Vcnt is less than 4.7V
when Vcnt is Vt target
±0.2V.
Vcnt is less than 4.7V.
Possible Causes/Action
1. Make sure that the heat seal on the
development unit is not removed.
2. Defective TD sensor
1. Make sure that the heat seal on the
development unit is not removed
2. Defective TD sensor
3. Vt target settings are not correct.
4. Toner density error
4-2 SM Appendix