Brush Slip Ring Assembly Replacement - Sony DNW-A100 Maintenance Manual

5-14. Brush Slip Ring Assembly Replacement

Replace the brush slip ring assembly every 6,000 hours of the drum rotating.
Outline
Replacement
1. Remove the Flexible Board (CN2/SE-341 Board)
2. Remove the Brush Slip Ring Assembly
3. Cleaning (Contact Portion of the DR-294 Board and Installation Surface of
Brush Slip Ring Assembly)
4. Attach the Brush Slip Ring Assembly
5. Connect the Flexible Board (CN2/SE-341 Board)
Adjustment after Replacement
6. Check the RF (Refer to Section 4-2-3 in Maintenance Manual Part 1.)
(C1: RF CHECK)
Note
Replace the brush slip ring assembly when the brush or slip ring is worn or
damaged. The brush slip ring assembly cannot be replaced by only the brush or slip
ring.
Preparation
1. Turn off the power.
2. Remove the upper lid. (Refer to Section 2-3-1 in Maintenance Manual Part 1.)
3. Remove the plate MD assembly. (Refer to Section 2-4 in Maintenance Manual
Part 1.)
4. Remove the cassette compartment assembly. (Refer to Section 2-5 in
Maintenance Manual Part 1.)
Tools
. Torque screwdriver (6 kg . cm)(JB-5251):
. Torque screwdriver's bit (+2 mm, l = 75 mm): J-6323-420-A
. Cleaning cloth:
. Cleaning fluid:
DNW-A100/A50/A45
DNW-A100P/A50P/A45P
J-6252-510-A
3-184-527-01
9-919-573-01
5-14. Brush Slip Ring Assembly Replacement
5-97