Read Sony SLV-7700KML Service Manual online
— 6 —
Fig. 4. Parts requiring cleaning
4)
Solder 16 points on the rotary upper drum board. (See Fig. 2.)
5)
Fix the shaft ground assembly 2 using the screw 1 (P3
×
8) so
that the protrusion of the shaft ground assembly end contacts
the center of the drum shaft, (See Fig. 2.)
the center of the drum shaft, (See Fig. 2.)
Note:
When attaching the shaft ground assembly, be careful not to
apply force to the spring section of it.
apply force to the spring section of it.
6)
Tighten the screw 1 (P3
×
8). (See Fig. 2.)
3. PERIODIC CHECK AND REPLACEMENT
(Refer to the VHS MECHANICAL ADJUSTMENT
(H MECHA) MANUAL.)
(H MECHA) MANUAL.)
In order to obtain the best performance from this unit and make full
use of its capabilities, and to extend the life of the unit and tapes, it
is recommended that the following periodic checks and maintenance
be performed.
• The following must be done after every repair regardless of how
use of its capabilities, and to extend the life of the unit and tapes, it
is recommended that the following periodic checks and maintenance
be performed.
• The following must be done after every repair regardless of how
many hours the user has operated the machine.
3-1. CLEANING OF ROTATING HEAD DISK ASSEMBLY
1)
Press a chamois cloth which has been dipped in cleaning fluid
lightly against the rotating drum assembly, then do the cleaning
by slowly rotating the rotating head disk by hand. (Never try to
clean by using the motor to turn it.)
lightly against the rotating drum assembly, then do the cleaning
by slowly rotating the rotating head disk by hand. (Never try to
clean by using the motor to turn it.)
2)
Never try to clean by moving the chamois cloth at a vertical
angle to the head tip. There is a very great danger of damaging
the head tip if this is done.
angle to the head tip. There is a very great danger of damaging
the head tip if this is done.
3-2. CLEANING OF THE TAPE MOVEMENT SYSTEM
1)
Clean the surfaces which the tape contacts during its movement
(tape guide, drum assembly surface, capstan, pinch roller, etc.)
with a chamois cloth that has been dipped in cleaning fluid.
(tape guide, drum assembly surface, capstan, pinch roller, etc.)
with a chamois cloth that has been dipped in cleaning fluid.
3-3. CLEANING THE DRIVE SYSTEM
1)
Clean the driving parts with a cloth that been dipped in cleaning
fluid.
fluid.
No.4 guide
(TG4)
(TG4)
No.3 guide
(TG3)
(TG3)
FE head
No.2 guide
(TG2)
(TG2)
No.1 guide
(TG1)
(TG1)
No.0 guide
(TG0)
(TG0)
No.5 guide
(TG5)
(TG5)
No.6 guide
(TG6)
(TG6)
No.7 guide
(TG7)
(TG7)
No.8 guide
(TG8)
(TG8)
ACE head
capstan shaft
pinch roller
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