Read Sharp AL-1457 (serv.man15) Service Manual online
AL-1457 EXTERNAL VIEWS AND INTERNAL STRUCTURES 4 - 6
6. PWB unit
2
4
5
1
8
3
6
7
9
No.
Name
Function
1
Exposure lamp invertor PWB
Exposure lamp (CCFL) control
2
Main PWB (MCU)
Copier control
3
Operation PWB
Operation input/display
4
Power PWB
AC power input, DC voltage control, High voltage control
5
CCD sensor PWB
For image scanning
6
LSU motor PWB
For polygon motor drive
7
TCS PWB
For toner sensor control
8
LSU PWB
For laser control
9
I/F PWB
Scanner/GDI Printer control (parallel I/F, USB I/F)
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