VC-MH80
VC-MH90
MECHANICAL PARTS REQUIRING PERIODICAL INSPECTION
Use
the following table as a guide to maintain the mechanical parts in good operating condition.
Guide roller ass’y
Supply impedance roller
Supply impedance roller
(inner hole and shaft)
Supply impedance roller flange
Retaining guide
Slant
poie
Drum ass’y
500 1000
1500 2000
hrs. hrs.
hrs. hrs.
Possible
symptom
encountered
Remarks
0
u
q 0
Abnormal rotation or
significant vibration
cl’0
q 0
requires replacement.
q
q
Lateral noises
Clean with pure high
Head occasionally.blocked
quality isopropyl alcohol.
q q q q
Clean tape contact part
II
q q q
with the specified cleaning
liquid.
q q
0
0
Poor S/N ratio, no
colour,
poor
cl
00 q
0
Cl
flatness of the envelope with
alignment tape
Full-erase head
q q q 0
Poor
colour,
beating
Clean
tape contact area
with the specified cleaning
AK
head
0
q q
0
Sound
toosmall
or distorted
liquid.
Capstan
D.D.
Motor
Cl
0
Cl
0
No tape running, uneven
colour
Pinch roller
q
0
q 0
No tape running, tape slack
Clean rubber and rubber
contact area with the
Reel belt
q
0
No tape running, tape slack, no
fast forward/rewind motion
specified cleaning liquid.
Tension band ass’y
0
Cassette not loaded or unloaded
Loading Motor
0
Reel idler ass’y
0
No tape running
Reel
pully
ass’y
UA
q O
Clutch gear ass’y
0
Main
supplyrtake-up
brake levers
0
Tape slack
Rrplace the roller of the
cleanerwhen
itwears
AHC (Automatic Head Cleaner)
0
0
down.
Just change the AHC roller
assm
bly
for new one.
NOTE:
0:
Part replacement.
0
:
Cleaning (For cleaning, use a lint-free cloth dampened with pure isopropyl alcohol).
A:
Oil refilling (The indicated point should be lubricated with high quality spindle oil every 1000
hrs).
If the reading is out of the specified value, clean or replace the part.
12
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