A4 Power Supply Inputs And Outputs - Keysight Technologies 53147A Service Manual

2 Service
Table 2-3
wire color for each input and output, and the tolerances specified for these
voltages.
Table 2-3
Input/Output Vol tage
AC-input (neutral) 0 VAC
AC-input (line in)
85 - 264 VAC
–15.0 VDC @ 0.7 A max.
0.0 VDC (ground for –15 VDC)
N/A (unused)
N/A (unused)
+15.0 VDC @ 2 A max.
0.0 VDC (ground for +15 VDC)
+5.0 VDC @ 5A max.
0.0 VDC (ground for +5 VDC)
[a] AC-input values are referenced to chassis ground.
Adjusting the +5 VDC Output
The +5 VDC output of the power supply is adjustable. If this voltage is found to be
outside of the tolerance range listed in
which is visible on the top surface of the power supply's circuit board. When
adjusting the +5 VDC output, use a nonmetallic or insulated adjustment tool.
82
lists A4 Power Supply's input and output voltages, the corresponding

A4 Power Supply Inputs and Outputs

Connector and Pin Designation
[a]
TB1, pin N
[a]
TB1, pin L
TB2, pin 1
TB2, pin 2
TB2, pin position 3 (no pin)
TB2, pin 4
TB2, pin 5
TB2, pin 6
TP 13 (bottom of motherboard)
TB2, pin 8
Keysight 53147A/148A/149A Assembly Level Service Guide
Wire Color
blue
brown
lavender
brown
N/A
blue
brown
red
black
Table 2-3, it can be adjusted using R23,
Tolerance
—
—
±3%
—
—
±5%
—
±1%
—