Periodic Replacement And Check Item Table - Sony BVW-55 Maintenance Manual

4-1. Periodic Maintenance

4-1-2. Periodic Replacement and Check Item Table

The replacement time shown in the following table is not the guarantee term of parts. The replacement
time of parts varies depending on the operating environment and conditions of the unit.
Especially, the pinch roller and video head cleaner may be required replacing earlier than replacement
period shown in table depending on their dirt or abrasion.
The part with arrow "↓" in the table is included in the part pointed by the arrow.
When the part pointed by the arrow is to be replaced, the part with the arrow will be replaced at the same
time.
No. Replacement Part
1. Upper drum assembly
2. Slip ring
3. Brush
4. Drum
5. Video head cleaner
6. Pinch roller
7. Swing gear
8. Tension regulator band
9. Timing belt (reel)
10. S main brake shoe
11. Capstan motor
12. S reel motor
13. AT head
Mode A : Drum rotating hours
Mode B : Tape running hours
4-2
R : Replacement
Inspection hours
Mode 1,000 2,000 3,000 4,000 5,000 6,000 Part No.
↓
A R
↓
A R
↓
A R
A R
B R R R R
B R R
B R R
B R R
B R
B R
B
B
B
Description
R A-8322-731-A Upper drum assembly DBR-47-R
R A-8317-463-A Slip ring assembly, 4ch (RP)
R A-8317-464-A Brush assembly, 4ch (RP)
A-8322-730-A Drum assembly DBH-47A-R
R R A-8322-054-A Cleaning roller assembly with a CR cap
R X-3678-926-1 Pinch Roller
R A-8278-829-C Gear assembly
R A-8278-704-D Tension regulator band assembly
R 3-611-544-01 Timing belt
R 3-611-473-01 Brake shoe
R 8-835-590-01 DC motor SCV-0703A/J-N
R 8-835-589-01 DC motor SRV11A/J-N
R 8-825-623-22 Audio head EPS244-2103B
BVW-55