Panasonic Extension Unit Wj Hde300 Operating Instructions

Before attempting to connect or operate this product,
please read these instructions carefully and save this manual for future use.
Extension Unit
Instructions
Model No.WJ-HDE300
WJ-HDE300Extension Unit 

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The serial number of this product may be found on the rear
of the unit.
You should note the serial number of this unit in the space
provided and retain this book as a permanent record of your
purchase to aid identification in the event of theft.
Model No. WJ-HDE300
Serial No.
The lightning flash with arrowhead sym-
bol, within an equilateral triangle, is
intended to alert the user to the pres-
ence of uninsulated dangerous voltage
within the products enclosure that may
be of sufficient magnitude to...

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■Important Safety Instructions
1) Read these instructions.
2) Keep these instructions.
3) Heed all warnings.
4) Follow all instructions.
5) Do not use this apparatus near water.
6) Clean only with dry cloth.
7) Do not block any ventilation openings. Install in accordance with the manufacturers instructions.
8) Do not use near any heat sources such as radiators, heat registers, stoves, or other apparatus (including amplifiers) that
produce heat.
9) Do not defeat the safety purpose of the polarized or...

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Contents
■Important Safety Instructions  .................................................................................................................. 3
■General ................................................................................................................................................... 5
■Precautions ............................................................................................................................................. 5
■Appearance...

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■Precautions
•Do not operate the appliance beyond its specified tem-
perature, humidity or power source ratings. 
Do not use the appliance in an extreme environment
where high temperature or high humidity exists. Use the
appliance at temperatures within +5 °C to +45 °C (41 °F
to 113 °F) and humidity below 85 %.
The input power source for this appliance is 120 V AC
60 Hz. 
•Avoid shock and vibration
Shock or vibration may damage the HDD.
The HDDs are fragile especially when the HDD motors
are revolving...

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■Appearance
●Front View
qError indicator [ERROR]
Lights when an error occurs. Refer to TROU-
BLESHOOTING for details.
Red:System error
Orange:Thermal error or malfunction of the cooling fan.
wHDD power indicator [HDD POWER]
ON:
Indicates that HDDs are powered.
OFF:Indicates that the HDDs are not powered.
Note:Do not move the unit until the motors of the HDDs
stop completely. To stop the motors, turn off the
HDD POWER switch behind the front cover. Move
the unit after confirming that the indicator has...

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POWER
AC  IN
SIGNAL GND
1 2 IN OUTEXT
yu ii
o
!0
!1
!2
●Rear View
ySerial in connector [IN]
Connect the WJ-HD300 series digital disk recorder or
other extension unit with the supplied serial cable.
uSerial out connector [OUT1] [OUT2]
Connect another extension unit with the supplied serial
cable.
iCooling fan
oSignal GND terminal [SIGNAL GND]
Connect this terminal to the SIGNAL GND terminal of
other equipment to avoid possible grounding loop and
noise if required.
!0Power switch [POWER]
Turn on the...

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!3
!4
!5
!6
SINGLE    RAID5MODERESET
HDD POWER
RECOVER
OFF            ON
w’
e’ q’
● Inside the Front Lid
qError indicators
Functions as same as that on the front panel.
Red:System error
Orange:Thermal error or malfunction of the cooling fan.
wHDD power indicator 
Functions as same as that on the front panel.
ON:Indicates that HDDs are powered.
OFF:Indicates that the HDDs are not powered.
eOperate indicator 
Functions as same as that on the front panel.
Lights green when turning on the power switch on...

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■Replacing/Mounting HDDs
Up to four HDDs (locally procured) can be installed in an
extension unit.
The HDDs should be installed in the proper positions in
order as shown above. Do not skip or reverse the order of
the HDD positions. 
Important
•The position of the MODE switch of all units in a system
must be the same. 
•When set to RAID5, the digital disk recorder will not
access the HDD preinstalled in it, but will access only
the HDDs in the extension unit.
•Refer to the dealer for the compatible HDDs...

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2-2 Slide the front cover to the left.
2-3 Pull the front cover toward you.
2-4 Disconnect the harness.
2-5 Remove the six screws (marked with ∆) and detach
the thin metal plate covering the front side.
2-6 Disconnect the cables when adding or replacing
the HDD.3.Remove two of the HDD mounting brackets.
•Remove the four screws and pull the brackets toward
you.
•When replacing an HDD, remove it from the bracket.
4.Prepare the HDDs to be fixed on the brackets.
•Release the static electricity from your...