AM-900U
5 – 14
2.3. Power section
The Control PWB requires multi voltage (+1.8V, +3.3V, +5V, +24V,
+24VH).
+3.3V, +5V, +24V and +24VH are supplied from the power supply unit,
and +1.8 V are generated by the regulator (IC8).
+3.3VR is generated by regulator (IC9) on the Control PWB, is the
exclusive use as clean power for scanner.
INT5V is generated by regulator (IC22) on the Control PWB, is the
exclusive use as interlocking power for Optical unit (LSU).
Its structure is as shown below.
Power Supply
Unit
Control PWB
+24VH(*)
+24VH
+24V (**)
+24V
INT5V
+5V
+5V
+3.3VR
+3.3V
+3.3V
+1.8V
(*) Supplied always regardless of door open/close.
(**) Supplied only when door is close.
KIA7805API (IC22)
XC6219B332PR (IC9)
FAN1117AD18X (IC8)
Fig. 7
Содержание AM 900 - Digital Office Laser Copier
Страница 120: ...AM 900U 6 13 13 Control PWB parts layout Bottom side The CONTROL PWB of the model employs lead free solder F3 F5 F7 F4 ...
Страница 122: ...AM 900U 6 15 2 LIU PWB parts layout Top side The LIU PWB of the model employs lead free solder ...
Страница 123: ...AM 900U 6 16 3 LIU PWB parts layout Bottom side The LIU PWB of the model employs lead free solder ...