S6 Portable Digital Color Doppler Ultrasound System
Service Manual
2. If you are uncertain about which component causes the problem, re-
place them one by one and re-test after each replacement until the
problem is solved. Replacing all the components before re-test is
NOT recommended. Fasten the wires/cables to the original place,
if possible, to avoid introducing extra noise into the circuits.
3. Attach the connectors in the correct way: write down the arrange-
ments for each connector before removing it.
4. After replacing all the necessary parts, put in all the screws, drive
them tightly.
5. Never leave a free or loose screw inside the equipment.
D. Post-Service Instructions
1. After servicing the equipment, the service engineer should run the
functional tests (described in section 10.3) to ensure the proper op-
eration of the equipment.
2. Ensure that the system works normally in different diagnostic modes.
Adjust various parameters (dynamic range, gray scale, gain, display
brightness and etc) to meet the user’s requirements for the image
quality.
3. ON-OFF Test: Turn on and off the equipment several times, and test
various diagnostic modes while it is on. Ensure that no problem oc-
curs again. Increase the ON-OFF tests number if an occasional prob-
lem has just been resolved. Also check for any potential problems, if
find any, resolve them also.
4. If the system has been used for a long time, it is necessary to do some
clean work, e.g., clean the dust filter and keyboard (refer to chapter
11).
5. Ensure again that the external power supply meets the requirement.
6. If a workstation is connected, check whether cine images can be
transferred to it from the S6 system.
7. Make a detailed record for the whole service process to assist in the
future follow-up (maintenance or service). It should include descrip-
tion of the problem, replaced parts and corresponding part numbers
and detailed repairing procedures. A signature from the hospital di-
rector on the service record is compulsory.
10.4.2 Problem Analysis
The common problems, divided into categories of startup problems (page
10-7), operating problems (page 10-9) and shutdown problems (page 10-
13), and their solutions are provided in the following tables. You may take
them for reference. However, you should analyze the problem on site with
care, it may be caused by a different faulty part!
P/N: 4720-0034-01A
10-6
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