Service manual

GV 30…, GV 50… Drive Mechanism
GRUNDIG Service 5 - 17
k
Fig. 4.1
3. Maintenance and Inspection of the Drive Mechanism
To obtain full function and performance from the video recorder and to avoid it getting excessively dirty, we recommend that the maintenance work
and checks listed in the table below be carried out at regular intervals.
The maintenance checks should also be carried out without fail when carrying out any repairs.
4. Names of the Main Mechanical Parts
4.1 Cassette Mechanism
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_ Clean a Check
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> Oil
Hood, sensor
1200
Stand, left
0100
Cassette guide, left
040B
Spring, tray
1000
Frame bottom
0300
Cassette guide,
Tray 040A
Drive lever,
left
Spring,
tray 1000
Shaft,
drive
Spring, plate 040D
Lever, lid
opener
040E
Spring, lid opener
040F
Stand, right
0200
Drive lever, right
Lever, door opener
0500
Spring
0700
Slide, cass. drive
0600
right 040C
Hours of use
Part maintained
Tape path
system
Drive
system
Performan-
ce checks
500
Tape guide
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R/P head
Tape drum cpl.
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Head cleaner
Pinch lever
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Reel
Reel belt
a
Relay gear, pully shaft,
gear shaft
Loading motor
Back tension
Brake system
Torque FWD, REW, PLAY, REV
(R-SEARCH)
1000 1500
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2000 2500
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(a)
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aa
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3000 3500
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4000 4500
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(a)
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5000
Remarks
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(a)
The life of parts varies enormously
depending on the environment in
which the part is used
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Playback tension torque:
30 to 50g/cm
a
FWD: ≥ 650g/cm
REW: ≥ 650g/cm
PLAY (SP mode): 60 to 110g/cm
REV (R-SEARCH): 115 to 180g/cm