Yamaha Steinberg MR816SCX Service Manual page 50

MR816CSX/MR816X
(7) All the LEDs of the MR816CSX/MR816X will fl ash
automatically after the sequential lighting.
Check visually again and press the [ASSIGN 1]
encoder in case of OK or the [ASSIGN 2] encoder in
case of NG.
(8) The LED test will be stopped followed by the test item
selection mode.
(Fig. 13) Order of sequential LED lighting
5-4. No. 3 SWITCH test
5-4-1. Outline
Executes device check of switches on the PN circuit board
and panel micro computer, and connection check of signal
cables between switches, panel micro computer and SSP1.
5-4-2. Main devices to be tested
• Panel micro computer
• Switch
5-4-3. Test method
The program automatically judges if the panel micro
computer is OK while you have to check manually if the
switches are OK or NG.
Turn the [ASSIGN 1] encoder to turn on the LED
corresponding to the SWITCH test and then press the
[ASSIGN 1] encoder to execute the test.
The LED for the [ASSIGN 2] encoder corresponding
to the SWITCH test lights up if the test result is OK or
doesn't light if the result is NG.
ASSIGN 1
3. SWITCH
(Test item selection)
5-4-4. Test contents
Communication with the panel micro computer is checked
before conducting the SWITCH test.
If the test result of the communication with the panel
50
MR816CSX Only
ASSIGN 2
3. SWITCH
(Test result)
(Fig. 14)
micro computer is NG, the test will be aborted before
proceeding to the SWITCH 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 SWITCH
test will follow in case of OK.
• Switch
(1) All the LEDs by the switches on the panel will light
up on entering the SWITCH test. The LEDs by the
switches for which checking is fi nished will go off to
indicate the progress of the test.
(2) Turn ON and OFF the switch in the order of the
SWITCH test. If the correct switch is turned ON/OFF,
the LED closest to the switch will go off.
• Order of switches
[QUICK CONNECT 1] → ... [QUICK CONNECT 8]
→ [+48 V] → [PAD] → [ASSIGN 1] → [ASSIGN 2]
If the switches are turned ON/OFF according to the
order of the SWITCH test and still the LED closest
to a switch does not go off, the switch or signal cable
may be defective. In that case, press the [ASSIGN 1]
encoder and [ASSIGN 2] encoder simultaneously to
abort the SWITCH test.
(3) If ON/OFF checking of all the switches are finished
according to the order, the SWITCH test will be
finished followed by test item selection mode
automatically.
(Fig. 15) Order of SWITCH test
5-5. No. 4 ENCODER test
5-5-1. Outline
Check the encoders on the PN circuit board and
connection of the signal cables between the encoders and
SSP1.
5-5-2. Main devices to be tested
• Encoder
5-5-3. Test method
Turn encoder knob on the panel counterclockwise and
clockwise by the designated number of clicks (1 to 3
turns) to check if the value changes correctly.
Turn the [ASSIGN 1] encoder to turn on the LED
corresponding to the ENCODER test and then press the
[ASSIGN 1] encoder to execute the test.
The LED for the [ASSIGN 2] encoder corresponding to
the ENCODER test lights up if the test result is OK or
doesn't light if the result is NG.
MR816CSX Only