Sound Test - Toshiba 400CS User Manual

3.15 Sound Test

To execute the Sound test, select 12 from the DIAGNOSTICS TEST MENU, press Enter
and follow the directions on the screen. The Sound test contains six subtests that test the 400
series Sound functions.
Subtest 01 CODEC (REC/PLAY)
NOTE: To execute this subtest, the internal microphone and internal
headphone (or internal speaker) are required.
Test the functions of the Codec (ES688) A/D, D/A converter. At the same
time, test the microphone and headphone terminals. When you execute this
subtest the following message is displayed:
[Quick REC & PLAY for ES488/688]
Press any key to *** REC ***
Press any key, start recording, and immediately play the sound. (It takes three
seconds.)
Subtest 02 FM Synthesizer
Test the OPL# (YMF262) functions. Connect the headphone, and check the
scale of right and left side. Also check the sound adjustment volume.
Subtest 03 SINE wave playback
This subtest expands the sine wave data table to 64KB and creates sine wave
data. The play data is transferred between DMA and CODEC, and plays the
sound. (It is a long beep.) Also, using the oscilloscope, observe the sine
waveform.
Subtest 04 Joystick
To execute this subtest, a port replicator and joystick are required. For mini-
mum sampling data, turn the stick to the upper left, and press the A or B
button. For maximum sampling data, turn the stick to lower right and press
the A or B button (it must be a different button than the one used for minimum
sampling data). If two sampling data are the same, an error occurs.
Subtest 05 MIDI/Joystick port
Conduct a wraparound test on the MIDI/Joystick port.
400 Series
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