Anritsu 683XXB Error 105 Power Supply Voltages out of Regulation, Regulated, Value, Point To Step

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Table 5-6.Error Messages 105 and 106 (1 of 10)

Power Supply Tests

WARNING

Voltages hazardous to life are present throughout the power supply circuits, even when the front panel LINE switch is in the STANDBY postion. When performing maintenance, use utmost care to avoid electrical shock.

Error 105 Power Supply Voltage(s) out of Regulation.

Description: The out of regulation circuit, located on the A15 Regula- tor PCB, monitors all of the regulated power supply outputs. This error message indicates that one of more of the voltages from the power sup- ply, with the exception of the 5 volt supply, is out of regulation. If the 5 volt supply is faulty, the 682XXB/683XXB will not operate.

Step 1. Measure the regulated voltages at the test points shown in

Table 5-7.

If incorrect for a supply, go to the referenced step.

qIf incorrect for several supplies, go to step 2. If all voltages are correct, go to step 3.

Table 5-7.Regulated Power Supply Voltages

Regulated	Measurement	Reference	Value		Refer
Voltage	Point	Point			to Step
+15VG	A15 TP3	A15 TP1	+15V	0.75V	4
–15VG	A15 TP9	A15 TP1	–15V	0.75V	4
+15VA	A15 TP2	A15 TP1	+15 ±0.75V		5
–15VA	A15 TP7	A15 TP1	–15V	0.75V	5
+15VLP	A15 TP12	A15 TP1	+15V	0.75V	6
–15VLP	A15 TP13	A15 TP1	–15V	0.75V	6
+15VFM	A15 TP8	A15 TP1	+15V	0.75V	7
–15VFM	A15 TP11	A15 TP1	–15V ±0.75V		7
–18VT	A15 TP10	A15 TP1	–18.06V	0.36V	8
–43VT	A15 TP15	A15 TP1	–43.1V ±0.9V		9
+24VH	A15 TP6	A15 TP1	+24.32V ±0.5V		10

682XXB/683XXB MM 5-19