NEC Aspila EX Hardware Manual page 54

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Section 2: PCB Installation and Startup
CPRU Installation (Figure 2-4)
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To Perform a Cold Start:
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2-12 Section 2: PCB Installation and Startup
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Install the battery on the CPRU. The polarity "+" symbol must be on top.
Install the DSPDBU daughter board if required. Refer to DSPDB Daughter Board (Figure
2-6, Figure 2-7) (page 2-15).
Install the PAL EPROM as needed on a basic NTCPU.
- When installing the chip, be careful not to bend the EPROM pins. Also note that the
keyed end of the EPROM should be positioned closest to the '1' pin position. After lining up
the pins with the connector, firmly push the EPROM into place.
Figure 2-4: INSTALLING THE PAL EPROM
- When removing the chip, use a flat-head screwdriver to gently pry each end of the
EPROM up, being careful not to bend the EPROM pins.
After being certain that the power supply is shut off, slide the NTCPU into the CPU slot in the
main cabinet.
Note that the component side of the PCBs should always be facing to the right side of the cab-
inet (away from the power supply).
If external BGM or MOH is being installed, plug an RJ61 connector into the CN16 connector
on the NTCPU. The other end of the cable plugs into the music source.
Refer to the PGDAD Module in the Optional Equipment section for details on connecting
to a music source.
Power on the system.
It is recommended that a Cold Start is performed when the system is powered on for the first
time. This will ensure that the customer data is set to factory defaults.
System software loaded from flash memory and the customer data is erased from RAM
memory.
Power off the main cabinet PSU. Push and release the switch on the PSU.
Wait for the system to power down.
Push in and hold the Load button SW1 on the NTCPU.
Power on the main cabinet PSU. Push and release the switch on the PSU.
Continue holding the Load button for approximately 3 seconds.
When the system has completed reloading the software (2 minutes), the Status LED will be
flashing on the NTCPU.
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