Roland R-09 Service Notes page 16

Apr. 2006
2. Device Test
Entering this item automatically starts testing of each device.
fig.test02-1_90
Insert a formatted SD card into the card slot. On insertion, checking is
resumed, and operation automatically advances to the next item unless a
problem is found.
fig.test02-2_90
Test descriptions
This verifies the checksum of the flash-ROM program area.
Flash:
SDRAM: This checks read/write access to the SDRAM.
RTC Clock: This checks whether the oscillator for the internal clock is
oscillating correctly.
M66592: This checks read/write access to the registers for the M66592
USB controller.
SD Card: This checks write to the SD card.
(After the check is completed, the content written to the SD
card by the test is erased.)
If a test fails, "NG" is displayed for the corresponding item.
fig.test02-3_90
16
3. Analog (External Mic) Test
This checks the throughput of input from the external microphone jack to
output.
Make the connection to the external microphone input jack (MIC).
Microphone input is impossible when nothing is connected or when the
connection is made to the line input jack (LINE IN). In such cases, a screen like
the one shown below is displayed.
fig.test03-1_90
<<Connect an external microphone. >>
fig.test03-2_90
<< Disconnect the device connected to the line input jack (LINE IN). >>
When the correct connection is made, a screen like the one shown below
appears.
fig.test03-3_90
Connect headphones and check the audio input from the microphone. After
verifying, use the [ ] button to advance to the next item.
At this time, input gain adjustment (the INPUT LEVEL button) and output
volume-level adjustment (the VOLUME button) do not function. If the volume
level of the sound heard through the headphones is too low, make sure the
MIC GAIN switch on the back of the unit is set to HIGH.
R-09