Yamaha M7CL-32, Service Manual

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M7CL-32/M7CL-48
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NG WORD CLOCK NG:WCLK
NG:BNC_WCLK_44K
NG OUT->IN NG: BNC_WCLK_48K_COUNT=1023
OK PLL(DIR2,DBL)
NO PLL UnLock
ACI 2 Loop
NG: AC_CH2 None Rx_data
-- COM or Communication
** VER OK: AC_CH2
Disconnect WORD CLOCK
IN BNC cable
Check ID
AutoNext
OkData TxData
OK NG
START PAUSE CLOSE
Checking Item
When there is TxData,
command being transmitted is also displayed.
When there is Ok Data,
When checking visually, this box is displayed.
OK button and Enter key are linked.
Used to start checking.
During the checking, this button
becomes [CONTINUE] button and
restarts checking when pressed
during temporal stop.
Used to stop checking
temporarily. Works as
[STOP] during temporal
stop, and pressing it will
force to end checking. Closes this screen to
return to Fig. 2 screen. When the check is marked here, OK and data being transmitted are displayed
for debugging this PC program (No check mark when program is started.)
Auto Next function
· When checking is started in automatic mode, the Auto Next function is turned on and checking proceeds automatically.
· When checking is started in individual mode, the Auto Next function is turned off. Checking is started using the [START] button.
· To recheck the NG item in automatic mode, press the [PAUSE] button, turn off the Auto Next function and press the [START] button.
OK: is also displayed.
Indicated when the total judgment of
all individual items is completed.
Judgment result of each item
NO appears when there is
no communication response
Item not existing
Item requiring no judgment
Operation instructions are displayed in
red and processing status in black.
Communication contents are displayed while checking all items.
· Scrolling is possible.
· Writing into text file is possible by using the copy & paste functions.
When check result is NG, details are displayed.
(Output from target CPU)
1) Automatic mode: When the [START] button at the bottom of the Fig. 2 screen is pressed, selected checking items will be executed
sequentially from the upper left downward. All judgment columns become blank when checking is started.
With [STOP on NG] selected, checking is stopped temporarily when judgment is NG.
Checking stops temporarily when the [PAUSE] button is pressed and stops when [STOP] button is pressed during the
temporal stop. Checking is restarted when the [CONTINUE] button is pressed.
2) Individual mode: If the button with OK/NG indication is pressed in Fig. 2, individual checking screen will be displayed. Press the [START]
button in each screen to execute the checking.
3) For the check items and check contents, refer to "List of Check Items" below.
4) For the check with no applicable items in each check screen, their characters disappear (gray out).
5) The file where the check results are stored should be named “Storage file name.csv”. (Only general check results will be saved.)
6) It is possible to save the communication results (right side of Fig. 3) as a file. (up to 30KB)
It should be named “Storage file name.txt”
Check CAUTION by showing warning message in operation. (Check also if the unit works with external power supply only at this time.)
So, no item name will appear.
Example of individual check screen (when checking in automatic mode) (Fig. 3)
●
List of check items
Item Check name Outline of check item Judgment
1-1 CPUM SRAM Check the data bus and address bus of CPUM SRAM Auto
1-2 CPUM SDRAM Check the data bus and address bus of CPUM SDRAM Auto
1-3 BATT Check the voltage of the backup battery Auto
1-4 RTC Obtain and set Real Time Clock Auto
1-5 E-BUS HOST Check E-Bus Host register by reading/writing it Auto
1-6 PLLP2 Check PLLP2 register by reading/writing it Auto
1-7 DSP6 Check each DSP6 register by reading/writing it. Check SIO for connection Auto
1-8 DSP7 Check each DSP7 register by reading/writing it. Check SIO for connection Auto
1-9 SLOT Check each signal of SLOT and power supply voltage Auto
1-10 WORD CLOCK Check PLL LOCK by counting Fs of WCLK OUT at WCLK IN Semi-auto
1-11 2TR OUT Checks by working 2T OUT DIGITAL. Semi-auto
1-12 MIDI Check transmission/reception by loopbacking MIDI IN/OUT Auto
1-13 REMOTE Check transmission/reception by loopbaking at REMOTE terminal Auto
1-14 LAMP,CAUTION Checks LAMP output voltage only Semi-auto
1-15 CPUP SDRAM Judges by checking that LCD test program is running. Auto
1-16 MAIN CPU I/F Checks by duplex CPU communication Auto
1-17 USB STORAGE Check control line by reading/writing USB MEMORY. Auto
1-18 HAAD Measure through sound by communicating to HAAD circuit board and changing GAIN Auto
1-19 LCD Check LCD indication Semi-auto
1-20 TOUCH PANEL Check input from TOUCH PANEL Semi-auto