Yamaha Steinberg MR816SCX Service Manual page 49

5-3-2. Main devices to be tested
• Panel micro computer
• LED
Colors of LEDs are as follows:
QUICK CONNECT 1 ‒ 8
SIG/PEAK 1 ‒ 8
+48V
PAD
PHONES
MASTER
REV-X
MORPH
WCLK
S/PDIF
ADAT
INTERNAL
96k
88k
48k
44k
Around ASSIGN 1
Around ASSIGN 2
5-3-3. Test method
The program automatically judges if the panel micro
computer is OK while you have to check visually if the
LEDs are OK or NG.
Turn the [ASSIGN 1] encoder to turn on the LED
corresponding to the LED test and then press the [ASSIGN
1] encoder to execute the LED test.
The LED for the [ASSIGN 2] encoder corresponding to
the LED test lights up if the test result is OK or doesn't
light if the result is NG.
ASSIGN 1
2. LED
(Test item selection)
(Fig. 12)
MR816X MR816CSX
Green Blue
Green Red Green Red
Green Green
Green Green
Green Green
Green Green
Green Green
Green
None
Green Green
Green Green
Green Green
Green Green
Green Green
Green Green
Green Green
Green Green
Green Blue
Green Blue
ASSIGN 2
2. LED
(Test result)
5-3-4. Test contents
Communication with the panel micro computer is checked
before conducting the LED lighting test.
If the test result of the communication with the panel
micro computer is NG, the test will be aborted before
proceeding to the LED lighting test.
• Panel micro computer
The test is conducted automatically.
The result is OK if the version of the panel micro
computer is read from the SSP1 correctly. The LED
lighting test will follow in case of OK.
• LED
(1) All the LEDs of the MR816CSX/MR816X will light
up on entering the LED lighting test.
(2) Check visually and if all the LEDs are lighting, press
the [ASSIGN 1] encoder to proceed to the Color by
Color test.
Press the [ASSIGN 2] encoder in case of NG to abort
the LED test.
(3) All the green LEDs of the MR816CSX/MR816X will
light on entering the Color by Color test.
Check visually and press the [ASSIGN 1] encoder in
case of OK to proceed to the Red LED lighting test.
Press the [ASSIGN 2] encoder in case of NG to abort
the LED test.
(4) Check visually in the Red LED lighting test. Press
the [ASSIGN 1] encoder if all the red LEDs of the
MR816CSX/MR816X are lighting to proceed to the
Blue LED lighting test. (Proceed to the procedure (6)
in case of the MR816X).
Press the [ASSIGN 2] encoder in case of NG to abort
the LED test.
(5) Check visually in the Blue LED lighting test. Press
the [ASSIGN 1] encoder if all the blue LEDs of the
MR816CSX/MR816X are lighting to proceed to the
sequential LED lighting test.
Press the [ASSIGN 2] encoder in case of NG to abort
the LED test.
(6) Check if the LEDs of the MR816CSX/MR816X light
sequentially from the upper left to lower right of the
panel in the sequential LED lighting test.
• Order of LED lighting
[QUICK CONNECT 1] → [QUICK CONNECT 2]
→ ...[QUICK CONNECT 8] → [SIG/PEAK 1] →
[SIG/PEAK 2] → ...[SIG/PEAK 8] → [+48V] →
[PAD] → [PHONES] → [MASTER] → [WCLK] →
[S/PDIF] → [ADAT] → [INTERNAL] → [REV-X]
→ [MORPH] → [96k] → [88k] → [48k] → [44k]
→ [ASSIGN 1] (1 – 11) → [ASSIGN 2] (1 – 11)
Press the [ASSIGN 2] encoder in case of NG to abort
the LED test.
MR816CSX/MR816X
49