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VC-A592U/A593U
VC-A5933U/H992U
VC-H993U/H994U
MAINTENANCE CHECK ITEMS AND EXECUTION TIME
Perform the maintenance with the regular intervals as follows so as to maintain the quality of machine.
Parts
Maintained
500
hrs.
1000
hrs.
1500
hrs.
2000
hrs.
Remarks
Possible symptom
encountered
Upper and lower drum ass’y
Pinch roller
Capstan D.D. motor
Reel belt
Idler ass’y
Tension band ass’y Screen swaying
Loading motor
Limiter pulley
Supply/take-up main brake levers Tape slack
A/C head
Guide roller ass’y
Sup guide shaft
Reverse guide
Slant pole on pole base
Full erase head Colour and beating
Lateral noises Head
occasionally blocked
Small sound or sound dis-
tortion
Poor S/N ratio, no colour
Poor flatness of the envelope
with alignment tape
Cassette not loaded or un-
loaded
No tape running, tape
slack
Clean tape contact part with
the specified cleaning liquid.
Abnormal rotation or significant vi-
bration requires replacement.
Clean rubber and rubber
contact area with the speci-
fied cleaning liquid.
Clean tape contact area with
the specified cleaning liquid.
No tape running, uneven col-
our
No tape running, tape
slack, no fast forward/re-
wind motion
No tape running, tape
slack
Replace the roller of the
cleaner when it wears down.
Just change the AHC roller
assembly for new one.
AHC(Automatic head cleaner)
NOTE: : Part replacement. : Cleaning : Apply grease
<Specified> Cleaning liquid Industrial ethyl alcohol
* This mechanism does not need electric adjustment with variable resistor. Check parts. If any deviation is found, clean
or replace parts.
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