Replacement Of Main Parts; Power Supply Unit - Sony DFR-E3000 Maintenance Manual

1-4. Replacement of Main Parts

1-4-1. Power Supply Unit

n
Never repair the inside of the power supply unit itself.
The power supply unit is critical part to safe operation. If
the component part of the power supply unit is replaced,
this may cause a fire or electric shock.
Replacement parts
Part name: Switching regulator
Part number: !1-468-136-12
Replacement procedures
1. Turn the power off.
2. Unplug the appliance from the outlet.
3. Remove the front panel. (Refer to the Section 1-3-1.)
4. Remove the upper chassis. (Refer to the Section 1-3-2.)
5. Remove the two screws, and remove the stay.
6. Remove the two screws, and remove the stay F.
7. Remove the screw, and remove the power protection
plate.
BVTT 3x6
Stay
BVTT
3x6
DFR-E3000
8. Disconnect the five connectors (CN1, CN51 to CN54)
9. Remove the four screws, and remove the switching
BVTT 3x6
Stay F
Power
protection
plate
10. Install a new switching regulator and the removed
11. Adjust the power supply voltage. (Refer to the next
12. Install the upper chassis.
13. Install the front panel.
connected to the switching regulator.
Switching regulator
CN54
CN53
CN52
CN51
regulator.
Switching regulator
PTTWH 3x6
Harness
clamper
parts in the reverse order of the steps 5 through 9.
page.)
1-4. Replacement of Main Parts
CN1
PSW 3x8
PTTWH
3x8
Ground wire
Harness
clamper
1-17