Yamaha T3n, Руководство по обслуживанию, Страница: 42 / 107

T5n/T4n/T3n
42
5-3-3. Automatic inspection
1. TEST 10 (STANDBY, PROTECT)
Using the keyboard of Windows PC, enter 00 and check that PROTECTION LED lights up and POWER LED lights in
orange.
(POWER LED lights in orange for about 2 seconds and then changes to green.)
The monitor screen appears as shown below 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
---------<TEST10:OK>
When the TEST 10 result is OK, “---------<TEST10:OK>” appears on the screen.
The test program proceeds to TEST 20 automatically after TEST 10.
2. TEST 20 (PHASE A ch/B ch)
The monitor screen appears as shown below.
Check that the A ch output signal is shifted from the A ch input signal by 180
°
in phase and press the return key.
>>20:PHASE TEST
Waiting for PROTECTION=NONE...
CH A:PHASE INVERTED
After pressing the return key, the monitor screen appears as shown below.
Check that the B ch output signal is deviated from the B ch input signal by 180
°
in phase and press the return key.
CH B:PHASE INVERTED
_
When the TEST 20 result is OK, “---------<TEST20:OK>” appears on the screen.
The test program proceeds to TEST 30 automatically after TEST 20.
3. TEST 30 (REMOTE)
The monitor screen appears as shown below.
Check that REMOTE LED is off and press the return key.
>>30:REMOTE TEST
REMOTE:OFF
_
When the TEST 30 result is OK, “---------<TEST30:OK>” appears on the screen.
The test program proceeds to TEST 40 automatically after TEST 30.
4. TEST 40 (ATT)
The monitor screen appears as shown below and judgment is made automatically.
>>40:ATT TEST
ATT=-6dB
VSP(CH A):15.43V-<OK>
VSP(CH B):15.33V-<OK>
---------<TEST40:OK>
When the TEST 40 result is OK, “---------<TEST40:OK>” appears on the screen.
The test program proceeds to TEST 50 automatically after TEST 40.
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