Service Manual Part 5
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• Ammeter: 10A DC
• Voltmeter: 0 - 20V DC
• Load Resistor: 0 - 100Ω, 10A (variable)
• Short circuit plug-in link: IPN 240-04020-62
• Ohmmeter: infinity to 0Ω
Refer to the T2008 circuit and wiring diagrams to the rear of this Section.
Check with the ohmmeter that the heatsink is electrically isolated from the nega-
tive output.
Connect the variable load in series with the ammeter across the output terminals
(see wiring diagram for the pin configuration of the output plug).
Set the load to maximum resistance (minimum load current).
Connect the DC voltmeter across the power supply output terminals.
The DC output wiring should be of sufficient gauge to carry the load current
required. It is recommended that a minimum wire size of 1.5mm is used.
Plug in the mains connector.
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Switch on the power supply.
Set RV1 for an output voltage of 13.8V.
Switch off the power supply.
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Before setting up the temperature shutdown, ensure that the power supply is at
ambient temperature, i.e. it has not been running recently with any significant
load current. The temperature shutdown is based on a heatsink ambient tempera-
ture of 25°C.
Disconnect the load resistor.