Overload Protection; Dc Detection Circuit Protection; Temperature Elevation Protection - Yamaha STAGEPAS 500 Service Manual

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ITEM
No.
(項目)
7
CROSSTALK
(クロストーク)
8
SIGNAL TO NOISE
RATIO
(信号雑音比)
9
RESIDUAL NOISE
(残留雑音)
10
PHANTOM VOLTAGE
(ファンタム電源)
11
LEVEL METER
INDICATION
(レベルメーター表示)
12
POWER CONSUMPTION
(消費電力)
(NOTE): 0 dBu=0.775 V
3.
Overload Protection(過負荷保護回路動作)
The product shall be set to 25 W output on SP OUT.
When + and - of SP OUT short-circuit, the product should stop the output and should blink POWER LED.
*
Cycle power (turn off and then on the POWER switch) to return to normal operation.
(SP OUT に 25 W を出力させ、SP OUT の+と−をショートさせた時、SP OUT の出力が無くなり、POWER 表示 LED
が点滅することを確認します。 )
(※ POWER スイッチを OFF し、再度 ON にすれば正常動作へ復帰します。 )
DC Detection Circuit Protection(DC 検出保護回路動作)
When DC is detected in AMP output, the power latch circuit is activated to turn off the power. In this case, it is
impossible to turn on the power until the power switch is turned off to discharge the capacitors C806 to C809. (It will
take about 10 minutes to discharge.)
(AMP 出力に DC を検出した場合は、電源のラッチ回路が動作し、電源を OFF します。この場合は、POWER スイッ
チを OFF し、C806 ∼ C809 のコンデンサーが放電されるまでは電源が入りません。 (約 10 分位かかります。 ) )
Temperature Elevation Protection(温度上昇保護回路動作)
When the temperature of the TH803 (temperature of the heat sink) is 70 ˚C or more, the protection circuit is activated
to turn off the output. The output will be automatically turned on when the temperature comes down.
(TH803 の温度(放熱板の温度)が 70 ℃以上になると、保護回路が働き、出力を OFF します。温度が下がると自動
復帰します。 )
INPUT CONDITIONS
(入力条件)
INPUT 1, 2, 3, 4, 5, 6, 7, 8 to
Adjacent INPUT
(隣接 CH 間)
HIGH, LOW VR CENTER
INPUT SHORT
(入力短絡)
INPUT-SW=LINE
MASTER-LEVEL=MIN.
SW-MIC
INPUT=XLR
INPUT IMPEDANCE=150 Ω
PHANTOM SW=ON
INPUT1
POWER Circuit Board
Part of the TH803
(TH803 の部分)
OUTPUT CONDITIONS
(出力条件)
SP OUT:
REF: 1 KHz, 200 W OUTPUT
(基準: 1 KHz, 200 W 出力)
(MEASURE WITH 20 KHz LPF)
SP OUT:
SP OUT
REF: 100 W OUTPUT MONITOR
(基準: 100 W 出力)
OUT
SP OUT
SP OUT
(MEASURE WITH 20 KHz LPF AES17)
CH1-4 XLR w-q
e-q
SP OUT:
REF: LEVEL METER="0"
(LEVEL METER"0"が表示)
SP OUT:
REF: 25 W OUTPUT
TH803
STAGEPAS 500
NOMINAL
LIMIT
(標準値)
(限界値)
75 dB
>70 dB
53dB
>50 dB
95dB
>90 dB
-54 dBu
<-50 dBu
-70 dBu
<-65 dBu
15V
15V±1V
22 dBu
22 dBu±2 dB
90 W
<93 W
29

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