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Operating instructions
PC ATX Power supply unit tester
Item no. 1503580
Intended use
This product is designed to measure and display the voltage of an ATX2.2 computer power adapter. It can
only be connected to power adapters with a 20/24-pin connection. Several connectors are provided for
different pin configurations. Power is supplied by the connected component.
It is intended for indoor use only. Do not use it outdoors. Contact with moisture, e.g. in bathrooms, must be
avoided under all circumstances.
For safety and approval purposes, you must not rebuild and/or modify this product. If you use the product
for purposes other than those described above, the product may be damaged. In addition, improper use can
cause hazards such as short circuiting, fire, electric shock etc. Read the instructions carefully and keep them.
Make this product available to third parties only together with its operating instructions.
This product complies with the statutory national and European requirements. All company names and
product names are trademarks of their respective owners. All rights reserved.
Delivery content
• Power supply unit tester
• Operating instructions
Up-to-date Operating Instructions
Download the latest operating instructions at www.conrad.com/downloads or scan the QR code above.
Follow the instructions on the website.
Explanation of symbols
The symbol with the lightning in the triangle is used if there is a risk to your health, e.g. due to an
electric shock.
The symbol with the exclamation mark in the triangle is used to indicate important information in
these operating instructions. Always read this information carefully.
The arrow symbol indicates special information and advice on operation.
This symbol reminds you to read the operating instructions included with the product.
Safety instructions
Read the operating instructions carefully and especially observe the safety information.
If you do not follow the safety instructions and information on proper handling in this
manual, we assume no liability for any resulting personal injury or damage to property.
Such cases will invalidate the warranty/guarantee.
a) General information
• The device is not a toy. Keep it out of the reach of children and pets.
• Do not leave packaging material lying around carelessly. This may become dangerous playing
material for children.
• Protect the product from extreme temperatures, direct sunlight, strong jolts, high humidity,
moisture, flammable gases, vapours and solvents.
• Do not place the product under any mechanical stress.
• If it is no longer possible to operate the product safely, take it out of operation and protect it
from any accidental use. Safe operation can no longer be guaranteed if the product:
- is visibly damaged,
- is no longer working properly,
- has been stored for extended periods in poor ambient conditions or
- has been subjected to any serious transport-related stresses.
• Please handle the product carefully. Jolts, impacts or a fall even from a low height can damage
the product.
• Also observe the safety and operating instructions of any other devices which are connected
to the product.
• Consult a technician if you are not sure how to use or connect the product.
• Maintenance, modifications and repairs are to be performed exclusively by a technician or a
specialist repair centre.
• If you have questions which remain unanswered by these operating instructions, contact our
technical support service or other technical personnel.
Operation
• To measure the voltage, connect the 20/24-pin connector on the power adapter (24-pin EATXPWR) to a
socket on the tester.
• Plug the power adapter into a mains socket and turn it on if necessary.
• The tester will not turn on if the power adapter is not working.
• If there is a sufficient voltage, the display on the tester will turn on and you will hear a number of beeps.
The tester will beep twice when it turns on.
• The required ATX standard voltages will be shown at the top of the LCD display for comparison. The
voltages delivered by the power adapter will be displayed underneath.
• If one or more of the connected voltages does not meet the required parameters, the tester will beep at
regular intervals and the non-standard parameter (voltage and Power Good value) will blink on the LCD
display.
• 'HH' indicates that the voltage is too high; 'LL' indicates that the voltage is too low.
• Insert up to two EATX12V mainboard connectors (8-pin dual CPU) into the socket on the tester. Pay
attention to the pin markings on the left-hand side of the tester to ensure that you use the correct socket.
• To test a peripheral device, insert the connector on the device into the corresponding socket. The tester
supports the following types of connector: Floppy, HDD, CD-ROM drive and SATA, 4-pin (P4), 6-pin PCI-
Express.
• Test peripheral devices one by one. Remove the connector after testing each device, as the tester cannot
distinguish between two different voltages.
• The +12V, +3.3V and +5V LEDs will turn on when the correct voltage is connected.
• For example, if you connect a molex plug, the +5V (red cable) and +12V (yellow cable) LEDs will turn on
when the correct voltage is connected. If you insert a SATA connector, all three LEDs (including the +3.3V
LED (orange cable)) will turn on.
Tolerance values for voltage and Power Good (PG)
Voltage
Lower limit
+5 V
4.75 V
-12 V
10.8 V
+12 V1
10.8 V
+12 V2
10.8 V
+3.3 V
3 V
+5 V2
4.75 V
Power Good
200 ms
Maintenance and cleaning
• Always disconnect the product from the power supply before cleaning it.
• Never use aggressive detergents, rubbing alcohol or other chemical solutions, as these could damage the
casing or even impair the functioning of the product.
• Use a dry, lint-free cloth to clean the product.
Disposal
Electronic devices are recyclable waste and must not be disposed of in the household waste. At
the end of its service life, dispose of the product according to the relevant statutory regulations.
You thus fulfil your statutory obligations and contribute to the protection of the environment.
Technical data
Power supply ........................................ 20/24-pin ATX connection
Test voltages ......................................... +12 V, -12 V, +5 V, -5 V,+ 3.3 V, 5 V, Standby (SB,) + 5 V Power
Good (PG)
Compatible connectors ......................... Disk drive, HDD, CD-ROM, SATA, 4-pin (P4), 8-pin
(Dual-CPU), 6-pin (PCI-Express)
Housing material ................................... Aluminium
Operating conditions ............................. -20 to +40 °C, 10 - 90 % RH
Storage conditions ................................ -20 to +70 °C, 5 - 95 % RH
Dimensions (W x H x D) ....................... 121 x 19 x 63 mm
Weight .................................................. 89 g
This is a publication by Conrad Electronic SE, Klaus-Conrad-Str. 1, D-92240 Hirschau (www.conrad.com).
All rights including translation reserved. Reproduction by any method, e.g. photocopy, microfilming, or the capture in
electronic data processing systems require the prior written approval by the editor. Reprinting, also in part, is prohibited.
This publication represent the technical status at the time of printing.
Copyright 2017 by Conrad Electronic SE.
Upper limit
5.25 V
13.2 V
13.2 V
13.2 V
3.6 V
5.25 V
500 ms
*1503580_v2_0117_02_DS_m_4L_(1)
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