NEC DS1000, Рабочая тетрадь для заочного курса

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DS1000/2000 Correspondence Course
DS2000 System Installation
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DS1000/2000 Workbook NEC America
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Power up the system.
Once all the PCBs you need are installed and you have cabled the system, you can
power-up the system. You do not need to reattach the right side panel before pow-
ering up the system. Leaving off the right side panel makes the station and trunk
cabling more accessible.
Note:
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The power supply and CPU must be installed with the power off.
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You can plug in the ASTU and ATRU PCBs hot (i.e., with the system power
applied) as required.
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You can plug in DSTU PCBs hot provided you first disconnect the station
cabling from the PCB.
1. Make sure the system is properly grounded and the PCB bracket is
reinstalled and secured.
2. Install surge protectors in the AC outlet you intend to use for system power.
3. Plug the main cabinet’s AC power cord into its surge protector.
4. Turn on the main cabinet power switch.
After about 30 seconds, verify that the PCB LEDs are lit correctly.
+ 5 V DC
On: +5 V DC power present
- 5 V DC
On: -5 V DC power present
Off: +5 V DC power not present
Off: -5 V DC power not present
- 40 V DC
On: -40 V DC power present
Off: -40 V DC power not present
Power Supply Status LEDs
(Italic items indicate system is operating normally)