Error Error Codes Description | Fluke 2625A, 2635A manual

Diagnostic Testing and Troubleshooting (2620A/2625A)	5
Error Codes

Error

9 A b

Table 5-1. Error Codes

Description

ROM (A1U8) checksum error External RAM (A1U3) test failed Internal RAM (A1U4) test failed Display power-up test failure Display not responding Instrument configuration corrupted

EEPROM instrument configuration corrupted EEPROM calibration data corrupted

A/D not responding

A/D ROM test failure (A3U9) A/D RAM test failure (A3U9) A/D self test failure

Refer to Troubleshooting information later in this section.

Error 1

ROM (A1U8) checksum match failed.

All the bytes in the ROM (including a checksum byte) are summed.

Error 2

Error 3

External RAM (A1U3) check failed.

Internal RAM (A1U4) check failed.

Complementary patterns are alternately written and read from each RAM location for both external RAM and the 256 bytes internal to the 6303Y Microprocessor (A1U4). If the pattern read from any RAM location is not the same as the pattern written, the test fails.

Error 4

Error 5

Error 6

Display self-check failed

Display dead.

The display processor automatically performs a self-check on power-up, and the Microprocessor attempts to read the result of this test.

Instrument configuration

The instrument configuration information stored in nonvolatile RAM (A1U3) has been corrupted. (The Cyclic Redundancy Checksum on this memory is not correct for the information stored there.) The instrument configuration is reset to the default configuration.

Error 7

Error 8

EEPROM instrument configuration corrupted or EEPROM not initialized.

EEPROM calibration data corrupted.

The EEPROM (A1U1) is divided into two storage areas: the instrument configuration storage and calibration data storage. Each area uses a Cyclic Redundancy Checksum (CRC), against which the data is checked on power-up.

∙Error 7 is reported if the instrument configuration check finds an error; the instrument configuration is set to factory defaults.

∙If the calibration data CRC verification indicates that there is calibration data that is in error, the front panel CAL annunciator is turned on, and Error 8 is reported.

Error 9

Error A

Note

Errors 7 and 8 should always appear the first time an instrument is powered up with a new, uninitialized EEPROM.Error 8 continues to appear at subsequent power-ups until the instrument is fully calibrated.

A/D Microcomputer (A3U9) failed to respond

This error is displayed if communication cannot be established with the 6301Y Microcomputer (A3U9).

A/D ROM test failure

All bytes of internal ROM for the 6301Y Microcomputer (A3U9) (including the checksum byte) are summed.

5-5

2635A, 2625A specifications

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Fluke 2625A, 2635A service manual Error Error Codes Description

Models: 2635A 2625A

Error

Table 5-1. Error Codes

Description

2635A, 2625A specifications