30 E8257D/67D, E8663D PSG Signal Generators Service Guide
Troubleshooting
Troubleshooting Assembly–Level Problems
Troubleshooting Assembly–Level Problems
This section provides the following:
— “Front–Panel Display Assembly Troubleshooting” on page 30
— “Power Supply Troubleshooting” on page 37
— “Option 008/009 Troubleshooting” on page 54
— “Self–Tests 1xx for the A13 I/Q Multiplexer” on page 55
— “Self–Tests 2xx: A5 Sampler Self–Test Errors” on page 58
— “Self–Tests 3xx: A7 Reference (Standard) Self–Test Errors (For
instruments with serial prefixes < US4805/MY4805)” on page 60
— “Self–Tests 4xx: A8 Output Self–Test Errors (E8267D only)” on page 61
— “Self–Tests 6xx: A9 YIG Driver Self–Test Errors” on page 64
— “Self–Tests 7xx: A6 Frac–N Self–Test Errors” on page 67
— “Self–Tests 9xx: A10 ALC Self–Test Errors” on page 71
— “Self–Tests 10xx: A7 Reference (Option UNR/UNX and Instruments with
Serial Prefixes ≥ US4805/MY4805) Self–Test Errors” on page 74
— “Self–Tests 11xx: A18 CPU Self–Test Errors” on page 76
— “Self–Tests 12xx: A26 MID Self–Test Errors (E8257D)” on page 77
— “Self–Tests 12xx: A26 MID Self–Test Errors (E8267D)” on page 83
— “Self–Tests 13xx: A11 Analog/Pulse Modulation Generator Self–Test
Errors” on page 89
— “Self–Tests 16xx for the A14 Baseband Generator (Option 601/602)” on
page 92
— “Self–Tests 22xx: A8 Output Self–Test Errors” on page 95
— “Self–Tests 24xx: A38 Lowband Filter Self–Test Errors” on page 97
— “Self–Tests 25xx: A43 Amp Filter Self–Test Errors” on page 98
— “Self–Tests 26xx: A8 Output Self–Test Errors” on page 100
Front–Panel Display Assembly Troubleshooting
Overview
The Front–Panel Display Assembly comprises the following:
— a 640 x 320 pixels liquid crystal display (LCD)
— a power switch/flat panel interface board, which contains the power on/off
switch, standby LED, and power–on LED
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