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HP 8648 A/B/C/D - Changpuak.ch

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Test Point Extender One additional adapter is required to perform the adjustments.<br />

Several adjustments use 531 as a test point on the motherboard of the<br />

DUT. The adapter is used to extend the 531 test point so that it can be<br />

accessed for the adjustments. The 531 Test Point Extender (<strong>HP</strong> part<br />

number 0<strong>8648</strong>-60175) and Service Support Software can be obtained,<br />

together, by ordering <strong>HP</strong> part number 0<strong>8648</strong>-60180.<br />

7.2 Adjustments<br />

You can also build the 531 Test Point Extender by using the following<br />

instructions. 531 is a six-pin connector on the motherboard. The test<br />

point extender consists of a six-pin connector housing atta<strong>ch</strong>ed to<br />

six crimped wires that will plug into 531. The six wires should be of<br />

different colors so that you can differentiate between the wires with<br />

just a glance. A good method of differentiating between the wires is<br />

by using the resistor color code values to identify the pin number. For<br />

example, the value of orange in the resistor color code is “3”; so the<br />

orange wire is connected as pin 3 of the test point extender.<br />

The recommended part numbers for the test point extender are shown<br />

below.<br />

‘hble 7-1. 531 Test Point Extender Forts List<br />

Description<br />

Connector housing, 6-pin<br />

Crimp connectors<br />

Wire, 22AWG, brown (color code value = 1)<br />

Wire, 22AWG, red (color code value = 2)<br />

Wire, 22AWG, orange (color code value = 3)<br />

<strong>HP</strong> Part Number<br />

1251-5981<br />

1251-5216<br />

8150-0007<br />

8150-0022<br />

8150-0017<br />

Wire, 22AWG, yellow (color code value = 4) 8150-0038<br />

Wire, 22AWG, green (color code value = 5) 8150-001 I<br />

Wire, 22AWG, blue (color code value = 6) 8150-0014<br />

1 foot<br />

_i 1 foot<br />

If you constructed your own test point extender, you can use this<br />

table to record your color code so that it can be readily identified in<br />

the future.<br />

Enter your 531 Test Point Extender Color Code Here<br />

Pin 1 Pin 2 Pin 3 Pin 4 Pin 5 Pin 6

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