17
Jan. 2007 MV-8800
MV8-OP CHECK
This checks whether the optional MV8-OP1 is operating correctly.
* This test requires the MV8-OP1, an audio output device such as a CD player,
monitoring equipment such as monitor speakers or headphones, an R-BUS
device such as the VS-2400CD, and various audio cables.
The audio signals that are input via the MV8-OP1’s DIGITAL IN connector or
R-BUS connector, or from the MV-8800’s ANALOG INPUT jack will be output
to the MV8-OP1’s ANALOG MULTI OUT jacks and R-BUS connector.
Mute Check
This checks whether the mute circuit is operating correctly.
Devices related to this test:
(MV8-OP1) IC1–10, IC12–18, IC21–25, IC29, IC30, IC32–34
1. Press the [F4](MUTE SW) switch.
2. Verify that each time you press this switch, the indication at the right of
“ROUTING G” alternates between “MUTE OFF” and “MUTE ON.”
3. Verify that when the indication is “MUTE ON,” no audio signal is output
from ANALOG MULTI OUTPUT.
* After switching to “MUTE OFF,” it will take several seconds before an audio
signal is output; this is normal operation.
Input Check
This checks the MV8-OP1’s DIGITAL IN connectors and R-BUS connector.
Devices related to this test :(MV8-OP1) IC11, IC19–29
1. Connect cables and input audio to the MV8-OP1’s DIGITAL IN A/B
connectors and R-BUS connector.
2. Press [F2](INPUT SEL) to select the connector that will input audio to the
MV-8800.
The input jack is shown below “INPUT SOURCE.”
3. Input audio from the connector indicated below “INPUT SOURCE,” and
verify that the same audio signal being input is output from the
ANALOG MULTI OUTPUT jacks and R-BUS.
* If R-BUS is selected as the input connector, checking of word clock slave
operation will also be performed, so set the word clock of your R-BUS device to
“INT.”
PLL Lock Check
Devices related to this test: (MV8-OP1) IC21, IC25
1. Connect an R-BUS device to the R-BUS connector, and power-on your R-
BUS device.
2. Set the R-BUS device’s word clock to “INT.”
3. Verify that the indication at the right of the “PLL STATUS” changes from
“UNLOCKED” to “LOCKED.”
Error Status Check
Devices related to this test: (MV8-OP1) IC11, IC26, IC28, X1
1. To the DIGITAL IN connector, connect a device that is able to produce
digital output (such as a CD player).
2. Verify that the indication at the right of “DIR STATUS” changes from
“ERROR” to “NO ERR.”
R-BUS UART Check
Devices related to this test: (MV8-OP1) IC18, IC21
1. Use a piece of wire to short the R-BUS connector’s TX (pin 14) and RX
(pin 25).
2. Verify that the indication at the right of “R-BUS U-ART” changes from
“--” to “OK.”
VGA Board Check
Devices related to this test: (Main) IC1, (Panel) IC1, VGA Board
If the VGA Board is correctly connected, the indication at the right of “OP2”
will be “YES.”
PS/2 Mouse Detect
Devices related to this test: (Panel) IC1, VGA Board
If the PS/2 mouse is correctly connected, the indication at the right of the
“PS2” will be “YES.”
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