Power Supply - Sony HXC-100 Service Manual

Power Supply

PS-755 Board
Input power voltages include 38 Vdc to 180 Vdc supplied by the CCU and 10 Vdc to 17 Vdc supplied by
the external DC power supply unit.
Output power voltages are as follows:
. Standby voltages +13.5 V and _5.5 V
. Voltage 14 V for viewfi nder
. Voltage 14 V for lens
. Voltage 14 V for utility
. Voltage 48 V for audio circuit
. Voltage 26 V for intercom
. Voltages 6.5 V and 1.8 V for CCD
. Other voltages 5.5 V, 3.8 V, and _5.5V
When 38 V is supplied from the CCU, only standby voltages +13.5 V and _5.5 V are output. When 180 V
is supplied from the CCU, all voltages are output. When voltages are supplied by the external DC power
supply unit, all voltages are output.
RE-263 Board
This small board on the PS-755 board outputs voltages 25 V, 15.5 V, and _8.5 V for the CCD.
MB-1125 Board
This is the motherboard of the unit, which contains interface with each board, inductors for power fi lters
of each board, capacitors, a positive-characteristic thermistor to prevent overcurrent, and a fuse.
FL-348 Board
This board isolates RF signals from the DC power for this unit.
1-15
HXC-100/V1 (E)