Nov. 1997 © TOSHIBA
10 - 13
4560/4570 DEVELOPER
10.4 Brush Motor (Toner Motor (M 9)) Drive Circuit
The toner motor is provided to supply toner for the developer unit.
The toner motor is driven by transistor 2SD1417 (Q2 on the logic PC board), and its circuit is structured
as follows.
The motor winding is connected to the +24V at its (+) side and to the collector of Q2 at its (–) side.
– When P62 (TMOT-ON signal) of the main-CPU becomes “L” level –
•
Q10 is turned ON
Q2 is turned ON
•
The +24V power supply supplies current in Q2 via the motor winding
the motor rotates
– When TMOT-ON signal becomes “H” level –
•
Q10 is turned OFF
Q2 is turned OFF
•
The current which was flowing in the motor winding flows via the route of diode D2.
~
It decreases at the rate of the time constant determined by the inductance and resistance of the
winding.
MAIN-CPU
+5SW
63
P62
IC35
TMOT-ON
Q10
R157
R156
D2
+24
Q2
2SD1417
PWA-LGC
Toner motor
Summary of Contents for 4560
Page 210: ...Nov 1997 TOSHIBA 13 43 4560 4570 ADU 13 8 7 Harness connection diagram ...
Page 213: ...4560 4570 ADU 13 46 Nov 1997 TOSHIBA 13 8 9 PC board assembly ...
Page 238: ...Nov 1997 TOSHIBA 14 25 4560 4570 CIRCUIT DIAGRAMS 14 5 Power Supply Circuit PS ACC A 115V ...
Page 239: ...4560 4570 CIRCUIT DIAGRAMS 14 26 Nov 1997 TOSHIBA B 230V ...
Page 243: ...Nov 1997 TOSHIBA 16 1 4560 4570 PC BOARD 16 PC BOARD ASSEMBLY 16 1 PWA LGC ...
Page 244: ...4560 4570 PC BOARD 16 2 Nov 1997 TOSHIBA 16 2 PWA PNL ...
Page 245: ...Nov 1997 TOSHIBA 16 3 4560 4570 PC BOARD 16 3 PWA KEY1 16 4 PWA KEY2 ...
Page 246: ...4560 4570 PC BOARD 16 4 Nov 1997 TOSHIBA 16 5 PWA ERS ...
Page 247: ...Nov 1997 TOSHIBA 16 5 4560 4570 PC BOARD 16 6 PS ACC A 115V ...
Page 248: ...4560 4570 PC BOARD 16 6 Nov 1997 TOSHIBA B 230V ...
Page 249: ...Nov 1997 TOSHIBA 16 7 4560 4570 PC BOARD 16 7 PS HVT ...
Page 342: ...4560 4570 RADF 18 84 Nov 1997 TOSHIBA 18 16 2 Control PC board circuit PWA F LGC 770 ...
Page 343: ...Nov 1997 TOSHIBA 18 85 4560 4570 RADF 18 16 3 Harness connection ...