MECHANICAL PARTS REQUIRING PERIODICAL INSPECTION
Use
the
following
table as a guide to maintain the mechanical parts in good operating condition.
1000 1500
2000
Possible symptom encountered Remarks
;uide
roller
ass’y
Cl
q
0
0
Abnormal rotation or
significant vibration
;upply
impedance roller
0
0
q 0
requires replacement.
;upply
impedance roller
q
q
Clean with pure high
Lateral noises
)nner
hole and shaft)
quality isopropyl alcohol.
. Head occasionally blocked
;upply
impedance roller flange
q q q q
Clean tape contact part
Retaining guide
q
0
q q
with the specified cleaning
liquid.
slant
pole
q q q 0
Video head (upper drum
ass’y)
q
00
q
0
Cl
Poor S/N ratio, no color
Full-erase head
q
0
q
0
Poor colour, beating
Clean tape contact area
AIC
head
cl
q q
0
Sound too small or distorted
with the specified cleaning
Poor flatness of the envelope with
liquid.
Lower drum
ass’y
cl
cl
q 0
alignment tape
Capstan
D.D.
Motor
q cl q 0
No tape running, uneven color
Pinch roller
q
Cl
q 0
No tape running, tape slack
No tape running, tape slack, no
Reel belt
cl
0
Clean rubber and rubber
fast forward/rewind motion
contact area with the
specified cleaning liquid.
Loading belt
q
0
Cassette not loaded or unloaded
Cassette loading belt
cl 0
Tension band
ass’y
0
Lateral image swing
Loading Motor 0
Cassette not loaded or unloaded
Replace the roller of the
cleaner when it wears
AHC
(Automatic Head Cleaner)
0 0
down. Just change the
AHC
roller assembly for
new one.
Reel block*
See the chart below.
* See the table below for servicing the reel block parts.
SupplyTTake-up reel disks
IJA
A 0 No tape running, tape slack
Clean with pure high
quality isopropyl alcohol.
Video search brake lever
0
Idler gear
ass’y
0
No tape running
Reel Pulley
CIA
00
Main
supplyfiake-up
brake levers
0 Tape slack
NOTE:
0:
Part replacement.
Cl
:
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
par-t.
18
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