SPS5000X series service manual
Chapter 5 Hardware troubleshooting
This chapter describes how to handle common hardware failures encountered
during power operation. Before handling such fault, ensure that the power
supply meets the following prerequisites.
1. If one voltage value is found to be different from the nominal value
when measuring voltage, turn off the power immediately.
2. Turn off the power before unpacking the connecting wire of the
mainboard and the screen backlight.
3. During the process of taking apart the instrument for measurement,
take measures to prevent static electricity from damaging the internal
components.
ESD Precautions
While performing any internal test of the power supply, please refer to the
following precautions to avoid damages to its internal modules or components
result from ESD.
⚫
Touch circuit boards by the edges as possible as you can.
⚫
Reduce handling of static-sensitive modules when necessary.
⚫
Wear a grounded antistatic wrist strap to insulate the static voltage from
your body while touching these modules.
⚫
Operate static-sensitive modules only at static-free areas. Avoid handling
modules in areas that allow anything capable of generating or holding a
static charge.
Required Equipment
The equipment listed in the table are required to troubleshoot the power supply.
Table 5-1required equipment
equipment
specification
example
Digital Multimeter Accuracy ±0.05%
Siglent SDM3045X
