2DF
2-3-18
2-3-4
Scanner drive PCB
SM
SM A
SM _A
SM B
SM _B
SM Vref
SM M1
SM M2
SM M3
SM M4
SM M5
SM CLK
SM CWB
SM RET
DT1
DT2
SM ENABLE
EL ON REM
EL
EL
INPCB
ODSW
ODSW
SHPSW
SHPSW
SDPCB
MPCB
Stepping
motor
driver
IC1
Figure 2-3-8
Scanner drive PCB block diagram
The scanner drive PCB (SDPCB) consists of a stepping motor driver IC (IC1) as the center, digital transistors DT1 and DT2,
etc.
Drive of the scanner motor (SM) is controlled by the current setting voltage (SM Vref) that is output from the main PCB
(MPCB), the mode signals (SM M1 to M5, SM CWB), the phase switchover clock signal (SM CLK), and the drive/stop signal
(SM ENABLE).
Also the main PCB (MPCB) outputs a control signal (EL) through a digital transistor (DT2) to the inverter PCB (INPCB) to
turn on or off the exposure lamp (EL).
Also the scanner drive PCB (SDPCB) acts as an interchange circuit of signals for the original detection switch (ODSW) and
the scanner home position switch (SHPSW).
Содержание Ri 2530
Страница 59: ...2DF 1 3 39 This page is intentionally left blank...
Страница 124: ...1 4 37 2DF This page is intentionally left blank...
Страница 130: ...1 4 41 2DF This page is intentionally left blank...
Страница 138: ...1 4 47 2DF This page is intentionally left blank...
Страница 151: ...1 4 56 2DF This page is intentionally left blank...
Страница 326: ...AD 63...
Страница 329: ...3CX 1 1 2 1 1 2 Part names Figure 1 1 1 Duplex unit...
Страница 330: ...3CX 1 1 3 1 1 3 Machine cross section Figure 1 1 2 Paper path Duplex unit...
Страница 346: ...DF 78...
Страница 349: ...3B5 1 1 2 1 1 2 Part names Figure 1 1 1 1 Intermediate tray 2 JAM release lever 3 Eject tray...
Страница 383: ...J 1402...
Страница 386: ...3B6 1 1 2 1 1 2 Part names Figure 1 1 1 1 Job separator tray 2 LED...
Страница 387: ...3B6 1 1 3 1 1 3 Machine cross section Figure 1 1 2 Paper path...
Страница 388: ...3B6 1 1 4 1 1 4 Drive system Figure 1 1 3 1 Gear 20 2 Gear 28 3 Gear 28 4 Eject roller gear...
Страница 399: ...PF 70...
Страница 401: ...1 1 2 3CC 2 4 Appendixes Timing chart No 1 2 4 1 Timing chart No 2 2 4 2 Wiring diagram 2 4 3...
Страница 403: ...3CC 1 1 2 1 1 2 Parts names 1 Upper drawer 2 Lower drawer 3 Desk left cover Figure 1 1 1 3 1 2...
Страница 404: ...3CC 1 1 3 1 1 3 Machine cross section Paper path Figure 1 1 2 Machine cross section...
Страница 436: ...RA 1...
Страница 438: ...3CP 1 1 1 1 1 1 Part names Figure 1 1 1 Switchback unit Switchback unit open close lever...
Страница 439: ...3CP 1 1 2 1 1 2 Machine cross section Figure 1 1 2 Paper path Switchback unit...
Страница 440: ...3CP 1 1 3 1 1 3 Drive system Figure 1 1 3 1 Switchback motor gear 2 Eject motor gear 3 Gear 23 31 4 Gear 21...
Страница 456: ...PF 75...
Страница 458: ...1 1 2 5FF 2 4 Appendixes Timing chart No 1 2 4 1 Timing chart No 2 2 4 2 Wiring diagram 2 4 3...
Страница 461: ...5FF 1 1 3 1 1 3 Machine cross section Paper path Figure 1 1 3 Machine cross section...
Страница 499: ...Fax System C...
Страница 501: ...1 1 2 3CM...
Страница 509: ...3CM 1 1 8...
Страница 553: ...3CM 1 3 40...
Страница 565: ...3CM 1 5 2...
Страница 570: ...3CM 2 1 2...
Страница 581: ...Fax System F...