Power Supply Assembly Adjustment; Adjustments; Calibration - HP 1652B Getting Started Manual

Power Supply
Assembly
Adjustment
Equipment Required:
Digital Voltmeter . . . . . . . . ..~....................................... HP 3478A
Procedure:
I
Note !h
The Power Supply Adjustment should be performed prior to the other adjustment
and calibration procedures.
/---
1. Disconnect the power cord from HP 1652B/1653B and remove the top cover.
Then refer to figure 4-1 for the testpoint and adjustment locations.
+520V ADJ
54502E09
Figure 4-I. Power Supply Adjustments
Connect the negative lead of the voltmeter to the COM test point on the
Power Supply Assembly.
Connect the positive lead of the voltmeter to + 5V on the Power Supply
Assembly.
Connect the power cord to the HP 1652B/1653B and turn the instrument on.
The voltmeter reading should be within the range of + 5.180 V to + 5.220 V.
If the voltmeter reading is out of this range, adjust the +5.2OV ADJ on the
Power Supply Assembly to + 5.200 V kO.020 V ( + 5.180 V to + 5.220 V).
Caution
High voltages exist on the sweep board that can cause personal injury. Avoid
contact with the CRT monitor sweep board when adjusting the +5.2OV.
HP 16528/1653B
Adjustments and Calibration
Service Manual 4-3