Periodic Replacement And Check Item Table - Sony DNW-A75 Maintenance Manual

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5-1. Periodic Maintenance

5-1-2. 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 cleaners, may be required replacing earlier than
replacement period shown in the table depending on the degree of their dirt or
abrasion.
The arrows "↓" and "↑" in the table indicate that the part is included in the assembly
described on the lower/upper line. If the assembly on the pointed line is replaced, the
part is also replaced as a component of the assembly together.
As for the hours meter, refer to Section 5-1-3.
As for replacing each part, refer to the maintenance manual Part 2, Volume-1.
No.
Replacement parts
1
Upper drum
2
Drum assembly
*2
3
Brush slip ring assembly Drum rotating time (H02)
4
Video head cleaner
5
Video head
cleaner assembly
*5 *6
6
AT head cleaner
7
Pinch roller
8
Reel motor
9
Capstan motor
!/
Pinch solenoid
*6
!-
Fan motor (rear)
!=
Fan motor (MD)
![
Fan motor (PS)
*1: Refer to Section 5-3 to measure and check the video head tip protrusion.
*2: Drum assembly includes an upper drum and a brush slip ring assembly.
*3: Check (adjust) the video tracking referring to Section 4-1-3 of the maintenance
manual part2, volume-1.
*4: Check that the shape is not deformed and that is not dirty by visual.
*5: Video head cleaner assembly includes a video head cleaer.
*6: Replace these parts when the replacement period or count is reached whichever
is earlier.
5-2
R : Replace the part.
Hours meter
(Menu No.)
1000
Drum rotating time (H02)
Drum rotating time (H02)
Drum rotating time (H02)
Drum rotating time (H02)
Threading times (H04)
Replace when used 200,000 times
Drum rotating time (H02)
Tape running time (H03)
Tape running time (H03)
Tape running time (H03)
Tape running time (H03)
Threading times (H04)
Replace when used 200,000 times
Energized time (H01)
Replace when used 40,000 hours
Energized time (H15)
Replace when used 40,000 hours
Energized time (H01)
Replace when used 40,000 hours
C : Perform check (adjustment).
Replace it depending on its condition.
Inspection hours (h)
2000
3000
C
*1
C
*1
C
*4
C
*4
C
*4
C
*4
R
C
*4
C
*4
R
C
*4
4000
5000
6000
C
*1
C
*1
C
*1
(↓)
C
*3
R (↑)
C
*4
C
*4
R
R
C
*4
R
R
C
*4
R
R
R
R
DNW-A75/A75P

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