Sony Power HAD FX HSC300R Service Manual page 26

• -5.5 V for standby power
• +14 V for fan power
• -5.5 V for others
MB-1207 Board
This is the motherboard of the unit, which contains interface with each board, inductors for power filters of each board,
capacitors, a positive-characteristic thermistor to prevent overcurrent, and a fuse.
The model information such as the serial number etc. is stored in EEPROM (IC2).
HSC300RF/HSC100RF/HSC300R/HSC100R
1-14