Mindray DC-68, Service Manual

Page: 261 / 281

Description of Self Test Items C-3
It is recommended to repair the fan, which does not meet the requirement of rotational speed if the
test result appears
FAIL
.
C.1.6 Z0206 Speaker Test

Top test item
N/A

Test content
Play the music by pressing the speaker from left or right. Test whether audio clip, amplifier circuit
or speaker function works well.
The dialog box appears from either left or right side to inquire the audibility of the speaker. If it is
inaudible, click [Retry] to re-play the track of the music. If it fails after couple of times of retry, click
[No, I Can’t]. If it is audible, click [Yes, I Can].

Analysis to test failure
The audio module or the speaker does not work well if the test result appears FAIL .

Suggestion to failure test
It is recommended to check the speaker and wire material, and audio module. Then, replace
CPU.
C.1.7 Z0207 Microphone Interface Test

Top test item
N/A

Test content
Test whether microphone interface on the device works well. First, the program informs to plug in
the microphone. The sound waves appear on the screen as the sound arrives at the microphone.
Only with the wave exceeds the exact valve, does it pass through the test.

Analysis to test failure
If the test result appears NaN, it indicates the microphone is not plugged in well or the circuit is not
in the place.
The microphone’s interface goes wrong if the test result appears
FAIL .

Suggestion to failure test
Ensure the microphone works well first. The sound waves appear on the screen if the sound
arrives at the microphone The interface does not work if the sound waves do not appear on the
screen. It is recommended to replace the PC carrier board.