4-2
DNW-A220
DNW-A220P
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.
R : Replacement
Inspection hours
No. Replacement Part
Mode
1,000 2,000 3,000 4,000 5,000 6,000 Part No.
Description
Note
1
Upper drum assembly A
R
↓
R
A-8317-461-C Upper drum assembly DJR-20C-R for Player
A-8317-462-A Upper drum assembly DJR-21A-R for Recorder
2
Slip ring
A
R
↓
R
A-8317-463-A Slip ring assembly, 4ch (RP)
for Player
A-8317-465-A Slip ring assembly, 3ch (RP)
for Recorder
3
Brush
A
R
↓
R
A-8317-464-A Brush assembly, 4ch (RP)
for Player
A-8317-466-A Brush assembly, 3ch (RP)
for Recorder
4
Drum
A
R
A-8317-459-C Drum assembly DJH-20AC-R
for Player
A-8317-460-A Drum assembly DJH-21A-R
for Recorder
5
Video head cleaner
B
R
R
R
R
R
R
X-3949-109-1
AHC roller assembly
3-615-320-01
CR cap
6
Pinch roller
B
R
R
R
R
R
R
X-3678-926-1
Pinch Roller
7
Swing gear
B
R
R
R
X-3679-512-1
Gear assembly
8
Tension regulator
B
R
R
R
A-8278-704-D Tension regulator band assembly
band
9
CTL head
B
R
8-825-779-72
CTL head PS244-21D
!/
Timing belt (reel)
B
R
R
3-611-544-01
Timing belt
!-
S main brake shoe
B
R
R
3-611-473-01
Brake shoe
!=
Capstan motor
B
R
8-835-590-01
DC motor SCV-0703A/J-N
![
S reel motor
B
R
8-835-589-01
DC motor SRV11A/J-N
!]
AT head
B
R
8-620-016-91
Audio head EPS244-2103M
!\
Tension spring
C
Replace every 20,000 times
3-613-709-01
Tension spring
Mode A : Drum rotating hours (hours)
Mode B : Tape running hours (hours)
Mode C : Threading counter (times)
