S6 Portable Digital Color Doppler Ultrasound System
Service Manual
Attention!
After the system is powered on, if it shows abnormal startup
screen or enters a diagnostic mode even without user’s inter-
vention, it is likely that the keyboard is not working properly.
Test the keyboard (all hard keys, knobs and flip switches) be-
fore searching for the problem resolution elsewhere.
10.4.1 Repairing Procedures
A. Field Test
Get detailed information on the equipment from the user before testing:
symptoms, working environment, frequency of the malfunction, whether
the equipment has been moved frequently, and etc.
1. Understand the user’s habit of operating the equipment. (Some users
turn off the power supply before the system shuts down completely,
this can cause software problems.) Make necessary recommendations
for the user.
2. Check the power supply: Can the outlet provide the power required
by the equipment? Any high power consuming devices connected to
the same outlet? . . .
3. Check the working environment: Humidity meets the operation re-
quirement? . . .
4. If there is burn smell from the equipment, identify the circuit board
which has burned. Check power supply and fuse first, and then DBHV
board, DBTR board, DBF board, Motherboard, and other parts.
B. Identify the Cause of the Problem
1. Record the symptoms of the problem, the time that the problem oc-
curs, what the user has done after the problem occurs. Make ini-
tial guess on the cause of the problem based on your knowledge of
the equipment and your experience (any same/similar problems hap-
pened before or described in this manual). The Problem Analysis Ta-
ble in this chapter provides information on some common problems
and their solutions.
2. It’s recommended to check the connections first, especially the con-
nectors and cables attached to hard disk drive, Motherboard, DBF
board and power supply. Normally you should look for bad contacts
and worn out cables.
C. Repair the Equipment
1. Replace only the part/element that causes the problem.
P/N: 4720-0034-01A
10-5
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