9-2. adjusting the power supply voltage, 10. extension board – Sony PFV-L10 User Manual
Page 15
1-9 (E)
PFV-L10
MB-862 board
Board guide rails
EX-731 board
EX-731 board
Guide
Board to be extended
1-10. Extension Board
The following extension board is ready for PFV-L10 as an
optional accessory.
Extension Board
SONY Parts No.
Apply to
EX-731
A-8322-598-A
BKPF-Lxxx series
This section describes how to install and remove the EX-
731 board in and from the PFV-L10.
Installation
1.
Remove the board to be extended. (Refer to Section 1-8-1.)
2.
Insert the EX-731 board along the board guide rails.
3.
Insert the EX-731 board into the slot as far as it will go
and securely connect it to the connector on the MB-
862 board.
4.
Insert the board to be extended along the guide on the
EX-731 board.
5.
Push the board to be extended and securely connect it
to the EX-731 board.
Removal
1.
Pull out the extended board from the EX-731 board.
2.
Pull out the EX-731 board from the slot.
3.
Reinstall the extended board in the slot.
Adjustment
1.
Connect the
_ probe (Common) of the digital voltme-
ter to E3 [GND].
2.
Connect the
+ probe to TP4 [+5|V].
3.
Adjust the voltage on the digital voltmeter.
Adjustment part:
1VR1/Switching regulator
Specification:
+5.45
+0
V
_0.01
After adjustment is completed
1.
Set the power switch of the power supply unit to the
OFF (“O”) position.
2.
Disconnect the power plug from the outlet.
3.
Remove the power supply tool.
Power supply tool
Power supply unit
Switching
regulator
VR1
E3
TP4
+5V
PS-571
board
[GND]
1-9. Replacing and Adjusting the Switching Regulator
1-10. Extension Board
1-9-2. Adjusting the Power Supply Voltage
n
Adjust the power supply voltage before reinstalling the
power supply unit in the PFV-L10.
Required equipment
. Power supply tool (A-8323-642-A)
. Power cord (Cord used in the PFV-L10 or the equivalent)
. Digital voltmeter
. Adjustment driver
Preparation
1.
Confirm that the power plug of the power supply tool
is unplugged from the outlet.
2.
Attach the power supply tool to the power supply unit.
3.
Connect the power plug to the outlet, then set the power
switch of the power supply unit to the ON (“I”) position.