Automatic Inspections; Test 10 (Standby, Protect); Test 20 (Phase A Ch/B Ch); Test 30 (Remote) - Yamaha PC9501N Service Manual

PC9501N

2-3-3. Automatic inspections

2-3-3-1.

TEST 10 (STANDBY, PROTECT)

Enter "00" using the Windows PC keyboard, then check that the PROTECTION LED lights up and POWER LED lights in
orange.
(The POWER LED lights in orange for about 2 seconds, then changes to green.)
The screen shown below appears on the monitor, and judgment is made automatically.
>> 00: ALL TEST
>> 10: POWER TEST
Waiting for PROTECTION=NONE...
PROTECTION : NONE --<OK>
POWER:STANDBY
Wait 2sec ..
PROTECTION : ON --<OK>
POWER:ON
When the TEST 10 result is OK, the message shown below appears on the monitor.
------------------<TEST10:OK>
The test program proceeds to TEST 20 automatically after TEST 10.

2-3-3-2. TEST 20 (PHASE A ch/B ch)

The screen shown below appears on the monitor.
>> 20: PHASE TEST
Waiting for PROTECTION=NONE...
CH A:PHASE INVERTED
Check that the A ch input signal is deviated from the A ch output signal by 180° in phase, then press the return key.
The screen shown below appears on the monitor.
CH B:PHASE INVERTED
_
Check that the B ch input signal is deviated from the B ch output signal by 180° in phase, then press the return key.
When the TEST 20 result is OK, the message shown below appears on the monitor.
------------------<TEST20:OK>
The test program proceeds to TEST 30 automatically after TEST 20.

2-3-3-3. TEST 30 (REMOTE)

The screen shown below appears on the monitor.
>> 30: REMOTE TEST
REMOTE:OFF
_
Check that the REMOTE LED is turned off, then press the return key.
When the TEST 30 result is OK, the message shown below appears on the monitor.
------------------<TEST30:OK>
The test program proceeds to TEST 40 automatically after TEST 30.
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