Yamaha AFC1 Service Manual page 29

Use the following buttons as needed.
Click [SELECT ALL] and all check boxes will be set to on.
Click [CLEAR ALL] and all check boxes will be set to off.
Click [EXIT] and program can be ended.
Click [PRINT] and results of the inspection will be printed.
There will be no explanation of these buttons after this.
2-2-2. Initial diagnosis
The results of the diagnosis is shown on the initial screen.
Click [NEXT] and check boxes are set to on and the inspection
goes to the next item.
Use the following buttons as needed.
Click [END] to end the test program. The screen returns
"2-2-1 Selecting the main sheet
to the one shown in
inspection items"
.
Click [ABORT] to interrupt the diagnosis. The results of
the diagnosis will be NG (No Good).
There will be no explanation of these buttons after this.
(1) FOR SERVICE USE terminal (COM)
Checks the circuit between the [FOR SERVICE USE]
terminal and the CPU.
When in the inspection preparation stage, connecting the
[PC CONTROL] terminal and [FOR SERVICE USE]
terminal will automatically start the diagnosis. The results
are displayed here.
(2) PC CONTROL
Checks the circuit between the [PC CONTROL] terminal
and the CPU.
When in the inspection preparation stage, connecting the
[PC CONTROL] terminal and [FOR SERVICE USE]
terminal will automatically start the diagnosis. The results
are displayed here.
(3) System Version
The version of the data written in the AFC1 flash memory
is displayed.
(4) SRAM (IC7-IC14)
The results of the SRAM read/write check are displayed.
2-2-3. MIDI
Click [NEXT] on the initial screen and the following screen
is displayed.
Click [OK] and loop check is performed between [MIDI IN]
and [MIDI OUT]. The results of the diagnosis are displayed
on the MIDI screen.
2-2-4. Cascade
The following screen is displayed at the start of the cascade
check.
Connect the cascade check jig to each of the [CASCADE IN]
terminal and the [CASCADE OUT] terminal. Click [OK]. The
results of the diagnosis are displayed on the cascade screen.
(1) CASCADE IN
The results of the Digital Input/Output check of the [CASCADE
IN] terminal are displayed.
SIO ·· The results of the Control Tx/Rx check are displayed.
ID ····· The results of the ID identification circuit check are
displayed.
(2) CASCADE OUT
The results of the Digital Input/Output check of the [CASCADE
OUT] terminal are displayed.
SIO ·· The results of the Control Tx/Rx check are displayed.
ID ····· The results of the ID identification circuit check are
displayed.
AFC1
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