EMX512SC/EMX312SC
66
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PS CIRCUIT BOARD REPAIR GUIDE
1.
Applicable Circuit Board
This guide is applicable when repairing the circuit board specified in the table 1-1.
2.
Electrical Performance
2-1
Preparation
• Connect the SW circuit board (WD945300) to CN410 and CN411.
• Connect the OUT circuit board (U/V/A/K/O: WE842800, H/B/W: WE842900) to CN401 and CN402.
• Adjust the power supply voltage suites each circuit boards. Refer to the table 1-1 above.
• Connect the power cable to the AC inlet on the OUT circuit board.
2-2
Voltages of Each Part
The output voltage is normal if it is in the range specified in the table 2-1 when turning the power on.
Note:
The output voltage may be out of the range if it is measured without the load resistance or the power supply voltage differs
from the specified in the table 1-1.
2-3
Discharge
To prevent the electrical shock (discharge of the electric charge from the capacitor), discharge electricity between the following part
when handling the PS circuit board.
• Between the positive (+) and negative (–) terminals of C409 and C410. If you have left the unit for 10 minutes or more after turning
the power off, you do not have to discharge.
• Between CN406 and CN408. If you handle the EMX512SC model, also discharge electricity between CN405 and CN409.
Table 1-1
Model
Circuit Board
Part No.
Destination
Power Supply
EMX512SC
PS88U
WD948400
U/V
AC 120 V
PS88H
WD948500
H/B/W/K/O
AC 230 V
PS88A
WD948600
A
AC 240 V
EMX312SC
PS86U
WD948800
U/V
AC 120 V
PS86H
WD948900
H/B/W/K/O
AC 230 V
PS86A
WD949000
A
AC 240 V
Table 2-1
Model
Measuring Item
Measuring Part
Output Voltage (DC)
Load Resistance
U/V/A
H/B/W/K/O
EMX512SC
+B
CN405-CN407
approx. +94.3 V
approx. +90.3 V
10 k
Ω
, 3 W
+BL
CN406-CN407
approx. +48.6 V
approx. +46.7 V
5 k
Ω
, 3 W
–BL
CN408-CN407
approx. –48.6 V
approx. –46.7 V
5 k
Ω
, 3 W
–B
CN409-CN407
approx. –94.3 V
approx. –90.3 V
10 k
Ω
, 3 W
+15 V
CN415 1-2 pin
approx. +15.0 V
approx. +15.0 V
10 k
Ω
, 1/4 W
–15 V
CN415 3-2 pin
approx. –15.0 V
approx. –15.0 V
10 k
Ω
, 1/4 W
EMX312SC
+BL
CN406-CN407
approx. +66.0 V
approx. +67.0 V
5 k
Ω
, 3 W
–BL
CN408-CN407
approx. –66.0 V
approx. –67.0 V
5 k
Ω
, 3 W
+15 V
CN415 1-2 pin
approx. +15.0 V
approx. +15.0 V
10 k
Ω
, 1/4 W
–15 V
CN415 3-2 pin
approx. –15.0 V
approx. –15.0 V
10 k
Ω
, 1/4 W
Содержание EMX512SC
Страница 13: ...EMX512SC EMX312SC 13 DIMENSIONS 寸法図 71 66 1 54 108 284 2 286 264 71 66 1 298 307 8 440 2 5 442 5 Unit mm 単位 mm ...
Страница 29: ...EMX512SC EMX312SC 29 DSP Circuit Board 2NA WD80120 to MIX CN301 N C Component side 部品側 Pattern side パターン側 2 ...
Страница 33: ...EMX512SC EMX312SC 33 JACK Circuit Board 2NA WD94340 C C Pattern side パターン側 2 ...
Страница 34: ...EMX512SC EMX312SC 34 2NA WD94340 C C D D Pattern side パターン側 2 ...
Страница 35: ...EMX512SC EMX312SC 35 2NA WD94340 D D Pattern side パターン側 2 ...
Страница 43: ...EMX512SC EMX312SC 43 2NA WE83470 AC IN to PS CN402 to PS CN401 I I Component side 部品側 2 ...
Страница 46: ...EMX512SC EMX312SC 46 PA Circuit Board 2NA WE74050 K K Pattern side パターン側 1 ...
Страница 47: ...EMX512SC EMX312SC 47 2NA WE74050 K K Pattern side パターン側 1 ...
Страница 78: ...EMX512SC EMX312SC 78 3 2 修理フ ローチャー ト 1 次側回路を確認し ます 注意 感電するおそれがあ り ますので 注意し て作業し て く だ さい ...
Страница 80: ...EMX512SC EMX312SC 80 YES OPEN ...
Страница 82: ...EMX512SC EMX312SC 82 15Vp p 280Vp p ...
Страница 84: ...EMX512SC EMX312SC 84 ...