Manual No. 0158A
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IWB
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IWX Series (Overseas Use) Service Manual
(8) Power supply to logic circuit VCC and power supply to load cell VEX
The C-sized battery voltage is once raised to 5.5V by the DC/DC converter of IC6 S-8321AMMP
in the main board, and regulated to +5V in IC7 S-814AVC-BDO to supply the logic circuit power
VCC and the load cell power VEX with a stable 5V.
2 of C-sized battery
Main board P-936
AD board P-933
Load cell
2.0V or over
VEX
VCC
+5V
DC/DC converter 5V Regulator
+5.5V
VEX
+5V
Trough VEX
AC adaptor (OP)
3.5V
∼
6.0V
VCC
+5V