Kyocera Mita KM-4530 Service Manual page 305

DB REM
a 150 ms after the start key is pressed, the DB REM signal turns on to apply the developing bias to the developing
roller.
b 600 ms after the image forming motor (IFM) turns off, the DB REM signal turns off.
Toner hopper unit
TDLS
Drum
Developing
bias
Figure 2-1-26 Developing section block diagram
IFM
150 ms
Timing chart 2-1-7 Operation of developing bias
TFM
TAM
TNS
OUT
TONER CONTROL
HVTPCB
DB CONT
CN1-8
DB REM
CN1-9
600 ms
CN4-18
CN4-1, 2
CN4-3, 4
EPCB
CN4-8
CN4-10
CN12-8
CN12-9
2-1-23
2BC/D