Yamaha p5000s Service Manual page 39

5.4 Output Noise level
Shunt the input terminal with 600 ohms.
The noise level of output terminal shall be less than -60 dBu.
Next, set the input attenuator to MIN.
The noise level shall be less than -65 dBu.
6. PS sheet trouble repair guide
6.1 The application sheet part number and the line voltage
<Table 1-1>
Part number Sheet name
WB108400 PS70J
WB108500 PS70U
WB108600 PS70H
WB108700 PS70A
WC563400 PS70K
WB108800 PS50J
WB108900 PS50U
WB109000 PS50H
WB109100 PS50A
WC563600 PS50K
6.2 Electric performance
6.2-1 Preparation
• It connects sheet PSW (WB17830 the part of the SUB sheet) with CN403, CN404, CN405.
• The sheet In case of setting which COIL70J or COIL70H are used for, it connects J410-J413.
(Or, it short-circuits in CN406 and CN415).
• Connecting load resistor with the ± B, ± 15 V. <Table 2-1>
• It connects power code in CN401, CN402.
• It adjusts a line voltage to the voltage which suited each sheet. It refers to <table 1-1>
* As for the location, refer to Fig.1.
6.2-2 Each part voltage
It is ON in POWER SW when being, each part output voltage is normal if it is stored in the range in <table 2-1>.
When a line voltage is shifted, it doesn't sometimes become the output voltage of <table 2-1> when measuring output
voltage without the load resistor.
<Table 2-1>
Model Measurement
Model
part
P7000S + B voltage
P7000S
- B voltage
P5000S + B voltage
P5000S
- B voltage
commonness +15V Power
commonness
-15V Power
6.3 Discharge
When treating with simple substance sheet, for the shock guard (discharging in the electric charge of the capacitor),
discharge with the following terminal by resistor.
• Terminals of C416 and C417(Power SW OFF there is not need of the discharge but checking voltage for the safe
confirmation if leaving later for equal to or more than 10 minutes)
• Between W406RE-W407BL and W407BL-W408WH.
• Terminals of C402
Line voltage
AC100V/50Hz
AC120V/60Hz
AC230V/50Hz
AC240V/50Hz
AC230V/50Hz
AC100V/50Hz
AC120V/60Hz
AC230V/50Hz
AC240V/50Hz
AC230V/50Hz
Measurement
place
W406RE-W407BL +150.8 ± 3V +141.4 ± 3V +143.5 ± 3V
W407BL-W408WH -150.8 ± 3V
W406RE-W407BL +122.5 ± 3V +113.1 ± 3V +124.3 ± 3V
W407BL-W408WH -122.5 ± 3V
+15.0 ± 0.6V +15.0 ± 0.6V +15.0 ± 0.6V 10KΩ 1/4W
CN408 1-2pin
CN408 3-2pin -15.0 ± 0.6V -15.0 ± 0.6V -15.0 ± 0.6V 10KΩ 1/4W
Output voltage(DC)
J U,A
-141.4 ± 3V -143.5 ± 3V
-113.1 ± 3V -124.3 ± 3V
P5000S /P7000S
Load resistor
Load resistor
H
22KΩ 3W
22KΩ 3W
22KΩ 3W
22KΩ 3W
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