108
Chapter 6 Disassembly and Repair
Troubleshooting Hints
6
Power Supply
Verify the main power supply.
WARNING
Shock Hazard. To check the power supplies, remove the instrument cover as
described in “Mechanical Disassembly”, on page 112.
The main power supply provides a +12 Vdc supply to the main circuit
board. All other supplies are derived from this supply. This supply is
energized at all times while the line power cord is connected.
• Circuit failure can cause heavy supply loads which may pull down the
supply output voltage. Disconnect the main supply from the A1
circuit board to test.
• Always check the supply is free of oscillations using an oscilloscope.
• The main power supply provides an input fuse (type UL/IEC127,
rated 250VAC H 3.15A) to protect against the danger of fire in the
event of a failure of the power supply circuitry. However, this fuse
will not fail ("open" or "blow") in normal power supply operation. The
fuse fails only in the event of a significant overload indicating a
failure of the power supply circuitry. Replace the entire main
power supply assembly if the input fuse fails. Note that a power
supply failure may be caused by a failure elsewhere in the
instrument.
Power Supply
Minimum
Maximum
+12 V
11.4 V
12.6 V
Summary of Contents for 33210A
Page 1: ...Keysight 33210A 10 MHz Function Arbitrary Waveform Generator Service Guide ...
Page 2: ......
Page 3: ......
Page 10: ...8 ...
Page 13: ...1 1 Specifications ...
Page 19: ...2 2 Quick Start ...
Page 37: ...3 3 Front Panel Menu Operation ...
Page 52: ...50 3 ...
Page 53: ...4 4 Calibration Procedures ...
Page 96: ...94 Chapter 4 Calibration Procedures Calibration Errors 4 ...
Page 97: ...5 5 Block Diagram ...
Page 101: ...99 Chapter 5 Block Diagram Block Diagram 4 5 ...
Page 103: ...6 6 Disassembly and Repair ...
Page 128: ...126 Chapter 6 Disassembly and Repair Replaceable Parts 6 ...
Page 129: ...7 7 Backdating ...