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VT-G14
VT-G21
MAINTENANCE CHECK ITEMS AND EXECUTION TIME
Perform the maintenance with the regular intervals as follows so as to maintain the quality of machine.
Maintained 500
Parts
Guide Roller Ass'y
Sup Guide Shaft
Retaining Guide
Slant Pole on Pole Base
Full-erase Head
A/C Head
Upper and Lower Drum Ass'y
Capstan D.D. Motor
Pinch Roller
Reel Belt
Tension Band Ass'y
Loading Motor
Idler Ass'y
Limiter Pulley
Supply/Take-up Main Brake Levers
AHC
(Automatic Head Cleaner)
NOTE:
: Part replacement.
<Specified> Cleaning liquid: Industrial ethyl alcohol
* This mechanism does not need electric adjustment . Check parts. If any deviation is found, clean or
replace parts.
1000
1500
2000
hrs.
hrs.
hrs.
hrs.
: Cleaning
: Apply grease
28
Possible symptom
encountered
Abnormal rotation or significant
vibration requires replacement.
Lateral noises Head
occasionally blocked
Colour and beating
Small sound or sound
distortion
Clean tape contact area with
Poor S/N ratio, no
the specified cleaning liquid.
colour Poor flatness of
the envelope with
alignment tape
No tape running, uneven
colour
No tape running, tape
slack
No tape running, tape
slack, no fast forward/
rewind motion
Screen swaying
Cassette not loaded or
unloaded
No tape running, tape
slack
Tape slack
Replace the roller of the
cleaner when it wears down.
Just change the AHC roller
assembly for new one.
Remarks
Clean tape contact part with
the specified cleaning liquid.
Clean rubber and rubber
contact area with the
specified cleaning liquid.
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