Service manual

FO-IS125N
5 – 18
2.4. Power section
The Control PWB requires multi voltage (+3.3V, +5V, +24V, +24VH).
V4D, +24V and +24VH are supplied from the power supply unit.
+3.3V are generated by the regulator (IC900) on the Control PWB.
INT5V is generated by regulator (IC302) 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
Ach +3.3V
(*) Supplied always regardless of door open/close.
(**) Supplied only when door is close.
KIA7805API/P (IC302)
TA48033BF (IC900)
+5V
Fig. 5