5-4
DNW-A75/A75P
5-1. Periodic Maintenance
Replace the parts shown in the table below periodically when the threading/un-
threading operation is repeated frequently.
Replacement parts Replacement period Part No. Name Q’ty
Brake solenoid Every 200,000 times of threading 1-454-417-31 Solenoid, Plunger 1
S tension regulator Every 200,000 times of threading A-8267-795-E Tension regulator assembly (RP) 1
T tension regulator Every 200,000 times of threading A-8267-423-C T-tension regulator assembly 1
T drawing arm assembly Every 200,000 times of threading A-8274-876-F Drawer assembly (T) 1
Gear box assembly Every 200,000 times of threading A-8323-825-A Box assembly (RP), Gear 1
Threading ring assembly Every 200,000 times of threading A-8267-395-F Ring assembly, Threading 1
Ring roller Every 200,000 times of threading 3-180-677-01 Roller, Ring 2
3-180-679-01 Roller (B), Ring 1
Pinch arm guard Every 200,000 times of threading 3-180-853-01 Guard, Pinch arm 1
CL guide rail Every 200,000 times of threading 3-180-874-02 Rail, CL guide 1
Cassette compartment assembly
Every 200,000 times of threading A-8267-589-F
Cassette compartment (RP)
1
Video head cleaner Every 1,000 hours of drum rotating A-8320-546-A Roller (B) assembly (RP), 1
V cleaning
3-182-765-02 Spacer, CR 1
AT head cleaner Every 1,000 hours of drum rotating X-3167-053-2 Arm assembly, CL 1
Pinch roller Every 1,000 hours of drum rotating X-3167-054-4 Arm assembly, Pinch 1
5-1-3. Hours Meter
This unit can display an hours meter on the time data display area of the lower
control panel. Perform a periodic check with this hours meter as a reference.
1. Contents of display
Menu No. Display Contents
H01 OPERATION HOURS Sum of energized time
H02 DRUM RUNNING HOURS Sum of drum rotating time
H03 TAPE RUNNING HOURS Sum of tape running time
H04 THREADING COUNTER Sum of threading
H12 DRUM RUNNING HOURS Sum of drum rotating time (Resettable)
H13 TAPE RUNNING HOURS Sum of tape running time (Resettable)
H14 THREADING COUNTER Sum of threading (Resettable)
H15 TTP FAN OPERATION HOURS Sum of TTP fan operating time (Resettable)
2. Display procedure
1. Press the MENU button on the lower control panel.
2. Put the “*” to the desired ITEM by turning the search dial.
3. Press the SET button on the lower control panel to display the hours meter.
4. Press the MENU button once and repeat from step 2 to display other ITEM.
Press the MENU button twice to exit the MENU.
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