Service 2
Keysight 53210A/53220A/53230A Assembly Level Service Guide 163
Table 2-6 below lists the power supply voltages and their tolerances.
4 If the +15 V is bad or missing, replace the AC Power Supply (p/n 0950-2496).
5 If the +3.3 V or +5 V are bad or missing, the GPIB will likely fail.
6 If the +15 V is present, but one or more of the other voltages are incorrect or
missing, replace the motherboard.
7 After verifying the correct voltages, perform the counter Self-Test as described
on page 169.
Table 2-6 DC power supply voltages
Test point Voltage Tolerance
T1000 +3.30 V ±0.250 V
T1001 +3.30V ±0.250 V
T1002 +5.00 V ______
T1003 +5.00 V ______
T1004 +2.50 V ±0.6 V
T1005 +1.20 V ______
T1006 -5.00 V ±1.2 V
T1007 +10.0 V --------
J1000 (pins 1,2) +15.0 V --------
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