GE H45011DT Service Manual Download

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GE M

EDICAL

YSTEMS

IRECTION

2392751-100, R

EVISION

IVID

™ 4 S

ERVICE

ANUAL

Chapter 7 - Diagnostics/Troubleshooting

7-5

Section 7-3

Performing Front End (FE) Diagnostics

When performing Front End Diagnostics tests, it is strongly recommended to start with

Auto Sequence

especially if the system shows signs of an intermittent problem. As described in this section, the testing
sequence can be paused and restarted at any stage, providing a quick and easy method of reviewing
any detected faults.

NOTE:

When using Auto Sequence, most of the FE tests that can be performed manually (refer to the list numbered
1 through 8, below) are automatically performed, in sequence. However the following tests are

NOT

included

in Auto Sequence. These should be performed manually, as described in the appropriate sections:

•

Front Board Assembly (FB)

Transmit Test
TR Switch Test
FLA Jumper Test
Pencil Probe Test

•

MUX Board

Advanced Board Tests

NOTE:

During Auto Sequence, the system will automatically re-boot at least twice. This is normal and should
not give cause for concern.

The Front End diagnostic tests listed below can be initiated manually and performed by the system, as
described in this section. For each type of system configuration (either RFI or RFT), it is recommended
that these diagnostic tests be performed

in the following sequences

(as applicable)

•

For systems with

RFI CONFIGURATION

1.)

RFI Diagnostic Test

, as described in the

Radio Frequency Interface (RFI) Diagnostic Tests

(for RFI Configuration)

section, on page 7-11.

2.)

Beamformer (BF) Diagnostic

Test

, as described in the

Beamformer (BF) Diagnostic Tests

section, on page 7-21. At this stage, to continue to the Front End diagnostic tests, it is
necessary to re-boot the system.

3.)

Front Board Assembly (FB) Diagnostic Test

, as described in the

Front Board Assembly

(FB) Diagnostic Tests

section, on page 7-26.

4.)

MUX Diagnostic Test

, as described in the

MUX Diagnostic Tests

section, on page 7-48.

5.)

H/W Report Diagnostic Test

, as described in the

H/W Report

section, on page 7-67.

•

For systems with

RFT CONFIGURATION

1.)

Image Port (IMP) Diagnostic Test

, as described in the

Image Port (IMP) Diagnostic Tests (for

RFT Configuration)

section, on page 7-13.

2.)

VME Bus (VME) Diagnostic Test

, as described in the

VME Bus (VME) Diagnostic Tests (for

RFT Configuration)

section, on page 7-15.

3.)

RFT Diagnostic Test

, as described in the

RFT Diagnostic Tests (for RFT Configuration)

section, on page 7-17.

4.)

Front End Controller (FEC) Diagnostic Test

, as described in the

Front End Controller (FEC)

Diagnostic Tests (for RFT Configuration)

section, on page 7-19.

5.)

Beamformer (BF) Diagnostic

Test

, as described in the

Beamformer (BF) Diagnostic Tests

section, on page 7-21. At this stage, to continue to the Front End diagnostic tests, it is
necessary to re-boot the system.

6.)

Front Board Assembly (FB) Diagnostic Test

, as described in the

Front Board Assembly

(FB) Diagnostic Tests

section, on page 7-26.

7.)

MUX Diagnostic Test

, as described in the

MUX Diagnostic Tests

section, on page 7-48.

8.)

H/W Report Diagnostic Test

, as described in the

H/W Report

section, on page 7-67.

NOTE:

If the system must be re-booted, do so. Continue testing from the point at which you were required to
reboot. If a failure occurs, re-boot the system and test again to verify the outcome of the test.