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5-2
VL-H870U
VL-H875U
VL-H890U
VL-H870U
VL-H875U
VL-H890U
5-2. ITEMS AND TIMINGS OF INSPECTION AND MAINTENANCE
The mechanism of VCR needs the following periodic inspection and maintenance in order that it maintains its high quality. Also,
after the machine is repaired, execute the following maintenance and checks regardless of how long it has been used.
5-2-1. Inspection and maintenance list
Checking/Maintenance point
Possible symptom
encountered
Remarks
Usage time (hrs.)
500
1,000
1,500
2,000
3,000
• Improper S/N ratio
• No color appears.
Tape travelling route
(Refer to Section)
Drum (Refer to Section)
Video head
Tape travel system
Timing belt
Pinch roller
Capstan D.D. motor
★
★
★
• Tape does not run.
• Tape slackens.
• Screen shakes.
Rollers
• If abnormal rotation or de-
flection (significant) is
found, replace the roller.
Other than rollers
• Clean the tape contacting
areas. Be sure to use the
specified cleaning agent.
• Lateral noise
• Unclean head
• Screen shaking
• Replace if failure is found.
∆
∆
∆
Relay Pulle shaft
Pulle gear shaft
Drive gear shaft
• Abnormal sound
• Apply oil.
(Oil : COSMOHYDRO
HV100)
∆
∆
∆
Driving system
Oil
Diameter
φ
1.5 or less
Figure 1
A
Figure 2
5-2-2. Notes and cautions
(1) Any cut washers, once removed for parts replacement or for other
reason, must be replaced with new ones.
(2) The mechanism of this VCR does not involve any volume adjustment.
If the specified range is not satisfied, either cleaning or replacing the
parts is required.
(3) Oils
a) Be sure to use the specified oils (different viscosity may cause
troubles).
b) For the bearings, be sure to use oil that is free form dust and other
foreign substances. (Dust or foreign substance contained in the oil
may cause wear or seizure of the bearings.)
c) A drop of oil represents the amount of oil which is held on the needle
top as shown in the figure 1.
(4) The circuit repair must be executed without removing the V frame.
(5) For operating the mechanism alone, actuate it with the motor. The
terminal-to-terminal voltage must be DC4V or less.
(6) When installing the cassette control, press the part A shown in Figure
2.
*Do not press other parts.
(7) Take care so that the whole mechanism is not deformed.
Loading motor
• Replace if failure (abnor-
mal sound) is detected.
• Not ejectable
• The specific mode cannot
be set.
★
★
★
Abnormal sound
PB/VS-REW take-up torque
PB/VS-REW back tension torque
Tu brake
HC (Head Cleaner)
★
★
★
★
★
★
★
★
★
★
★
★
★
★
• If conformance to the
standard is not ensured,
replace part.
Note:
After oil is applied to the
drive gear shaft, slightly
wipe it off with swab.
Oil: COSMOHYDRO HV100
Greases: MORYCOAT YM-103/X5-6020
Screw locking agent: THREE BOND 1401B
Cleaning liquid: Industrial-use ethyl alcohol
: Replace.
: Clean.
∆
: Apply oil.
★
: Check.
Performance check
Содержание VL-H870U
Страница 45: ...VL H870U VL H875U VL H890U 8 2 1 2 3 4 5 6 7 8 9 10 J I H G F E D C B A 4 1 3 2 LOCATION MAP 2 4 ...
Страница 46: ...VL H870U VL H875U VL H890U 4 1 3 2 LOCATION MAP 3 4 S R Q P O N M L K J 8 3 ...
Страница 47: ...VL H870U VL H875U VL H890U 4 1 3 2 LOCATION MAP 4 4 10 11 12 13 14 15 16 17 18 19 J I H G F E D C B A 8 4 ...
Страница 49: ...VL H870U VL H875U VL H890U 8 6 1 2 3 4 5 6 7 8 9 10 J I H G F E D C B A 4 1 3 2 LOCATION MAP 2 4 ...
Страница 50: ...VL H870U VL H875U VL H890U 8 7 S R Q P O N M L K J 4 1 3 2 LOCATION MAP 3 4 RIMOCON JACK UNIT ...
Страница 53: ...VL H870U VL H875U VL H890U 1 2 3 4 5 6 7 8 9 10 J I H G F E D C B A 4 1 3 2 LOCATION MAP 2 4 8 10 ...
Страница 54: ...VL H870U VL H875U VL H890U S R Q P O N M L K J 4 1 3 2 LOCATION MAP 3 4 8 11 LCD PANEL ...
Страница 55: ...VL H870U VL H875U VL H890U 10 11 12 13 14 15 16 17 18 19 J I H G F E D C B A 4 1 3 2 LOCATION MAP 4 4 8 12 ...
Страница 57: ...VL H870U VL H875U VL H890U 1 2 3 4 5 6 7 8 9 10 J I H G F E D C B A 4 1 3 2 LOCATION MAP 2 4 8 14 ...
Страница 58: ...VL H870U VL H875U VL H890U S R Q P O N M L K J 4 1 3 2 LOCATION MAP 3 4 8 15 ...
Страница 59: ...VL H870U VL H875U VL H890U 10 11 12 13 14 15 16 17 18 19 J I H G F E D C B A 4 1 3 2 LOCATION MAP 4 4 8 16 ...
Страница 60: ...VL H870U VL H875U VL H890U A B C D E F G H I J 1 2 3 4 5 6 7 8 9 10 8 17 8 4 CHARGE CIRCUIT SCHEMATIC DIAGRAM ...
Страница 61: ...VL H870U VL H875U VL H890U 8 18 10 11 12 13 14 15 16 17 18 19 å AND SHADED COMPONENTS SAFETY RELATED PARTS å å ...
Страница 63: ...VL H870U VL H875U VL H890U 8 20 1 2 3 4 5 6 7 8 9 10 J I H G F E D C B A 4 1 3 2 LOCATION MAP 2 4 ...
Страница 64: ...VL H870U VL H875U VL H890U 8 21 S R Q P O N M L K J 4 1 3 2 LOCATION MAP 3 4 ...
Страница 65: ...VL H870U VL H875U VL H890U 8 22 10 11 12 13 14 15 16 17 18 19 J I H G F E D C B A 4 1 3 2 LOCATION MAP 4 4 ...
Страница 67: ...VL H870U VL H875U VL H890U 8 24 10 11 12 13 14 15 16 17 18 19 ...
Страница 69: ...VL H870U VL H875U VL H890U 8 26 1 2 3 4 5 6 7 8 9 10 J I H G F E D C B A 4 1 3 2 LOCATION MAP 2 4 ...
Страница 70: ...VL H870U VL H875U VL H890U 8 27 S R Q P O N M L K J 4 1 3 2 LOCATION MAP 3 4 ...
Страница 71: ...VL H870U VL H875U VL H890U 8 28 10 11 12 13 14 15 16 17 18 19 J I H G F E D C B A 4 1 3 2 LOCATION MAP 4 4 ...
Страница 73: ...VL H870U VL H875U VL H890U 8 30 1 2 3 4 5 6 7 8 9 10 J I H G F E D C B A 4 1 3 2 LOCATION MAP 2 4 å ...
Страница 74: ...VL H870U VL H875U VL H890U 8 31 S R Q P O N M L K J 4 1 3 2 LOCATION MAP 3 4 ...
Страница 75: ...VL H870U VL H875U VL H890U 8 32 10 11 12 13 14 15 16 17 18 19 J I H G F E D C B A 4 1 3 2 LOCATION MAP 4 4 ...
Страница 76: ...VL H870U VL H875U VL H890U 8 33 A B C D E F G H I J 1 2 3 4 5 6 7 8 9 10 8 9 SERVO CIRCUIT SCHEMATIC DIAGRAM ...
Страница 77: ...VL H870U VL H875U VL H890U 8 34 10 11 12 13 14 15 16 17 18 19 ...
Страница 79: ...VL H870U VL H875U VL H890U 8 36 1 2 3 4 5 6 7 8 9 10 J I H G F E D C B A 4 1 3 2 LOCATION MAP 2 4 ...
Страница 80: ...VL H870U VL H875U VL H890U 8 37 S R Q P O N M L K J 4 1 3 2 LOCATION MAP 3 4 ...
Страница 81: ...VL H870U VL H875U VL H890U 8 38 10 11 12 13 14 15 16 17 18 19 J I H G F E D C B A 4 1 3 2 LOCATION MAP 4 4 ...
Страница 83: ...VL H870U VL H875U VL H890U 8 40 10 11 12 13 14 15 16 17 18 19 ...
Страница 84: ...VL H870U VL H875U VL H890U 8 41 A B C D E F G H I J 1 2 3 4 5 6 7 8 9 10 8 12 SRIPRA CIRCUIT SCHEMATIC DIAGRAM ...
Страница 85: ...VL H870U VL H875U VL H890U 8 42 10 11 12 13 14 15 16 17 18 19 ...
Страница 87: ...VL H870U VL H875U VL H890U 8 44 1 2 3 4 5 6 7 8 9 10 J I H G F E D C B A 4 1 3 2 LOCATION MAP 2 4 ...
Страница 88: ...VL H870U VL H875U VL H890U 8 45 S R Q P O N M L K J 4 1 3 2 LOCATION MAP 3 4 ...
Страница 89: ...VL H870U VL H875U VL H890U 8 46 10 11 12 13 14 15 16 17 18 19 J I H G F E D C B A 4 1 3 2 LOCATION MAP 4 4 ...
Страница 91: ...VL H870U VL H875U VL H890U 8 48 1 2 3 4 5 6 7 8 9 10 J I H G F E D C B A 4 1 3 2 LOCATION MAP 2 4 ...
Страница 92: ...VL H870U VL H875U VL H890U S R Q P O N M L K J 4 1 3 2 LOCATION MAP 3 4 8 49 ...
Страница 93: ...VL H870U VL H875U VL H890U 10 11 12 13 14 15 16 17 18 19 J I H G F E D C B A 4 1 3 2 LOCATION MAP 4 4 8 50 ...
Страница 95: ...VL H870U VL H875U VL H890U 8 52 10 11 12 13 14 15 16 17 18 19 ...
Страница 96: ...VL H870U VL H875U VL H890U 8 53 A B C D E F G H I J 1 2 3 4 5 6 7 8 9 10 8 16 TG CIRCUIT SCHEMATIC DIAGRAM ...
Страница 97: ...VL H870U VL H875U VL H890U 8 54 10 11 12 13 14 15 16 17 18 19 ...
Страница 99: ...VL H870U VL H875U VL H890U 8 56 1 2 3 4 5 6 7 8 9 10 J I H G F E D C B A 4 1 3 2 LOCATION MAP 2 4 ...
Страница 100: ...VL H870U VL H875U VL H890U S R Q P O N M L K J 4 1 3 2 LOCATION MAP 3 4 8 57 ...
Страница 101: ...VL H870U VL H875U VL H890U 10 11 12 13 14 15 16 17 18 19 J I H G F E D C B A 4 1 3 2 LOCATION MAP 4 4 8 58 ...
Страница 102: ...VL H870U VL H875U VL H890U 8 59 A B C D E F G H I J 1 2 3 4 5 6 7 8 9 10 8 18 ZOOM CIRCUIT SCHEMATIC DIAGRAM ...
Страница 103: ...VL H870U VL H875U VL H890U 8 60 10 11 12 13 14 15 16 17 18 19 ...
Страница 104: ...VL H870U VL H875U VL H890U 8 61 A B C D E F G H I J 1 2 3 4 5 6 7 8 9 10 8 19 CCD CIRCUIT SCHEMATIC DIAGRAM ...
Страница 105: ...VL H870U VL H875U VL H890U 8 62 10 11 12 13 14 15 16 17 18 19 ...
Страница 106: ...VL H870U VL H875U VL H890U 8 63 A B C D E F G H I J 1 2 3 4 5 6 7 8 9 10 8 20 HEAD AMP CIRCUIT SCHEMATIC DIAGRAM ...
Страница 107: ...VL H870U VL H875U VL H890U 8 64 10 11 12 13 14 15 16 17 18 19 ...
Страница 108: ...VL H870U VL H875U VL H890U 8 65 A B C D E F G H I J 1 2 3 4 5 6 7 8 9 10 8 21 MOTOR DRIVE CIRCUIT SCHEMATIC DIAGRAM ...
Страница 109: ...VL H870U VL H875U VL H890U 8 66 10 11 12 13 14 15 16 17 18 19 ...
Страница 112: ...A B C D E F G H I J 1 2 3 4 5 6 7 8 9 10 VL H870U VL H875U VL H890U 10 2 Wiring Side SIDE A ...
Страница 114: ...A B C D E F G H I J 1 2 3 4 5 6 7 8 9 10 VL H870U VL H875U VL H890U 10 4 Wiring Side SIDE B ...
Страница 116: ...A B C D E F G H I J 1 2 3 4 5 6 7 8 9 10 VL H870U VL H875U VL H890U 10 6 Wiring Side SIDE A ...
Страница 118: ...A B C D E F G H I J 1 2 3 4 5 6 7 8 9 10 VL H870U VL H875U VL H890U 10 8 Wiring Side SIDE B ...
Страница 120: ...A B C D E F G H I J 1 2 3 4 5 6 7 8 9 10 VL H870U VL H875U VL H890U 10 10 Wiring Side SIDE A ...
Страница 122: ...A B C D E F G H I J 1 2 3 4 5 6 7 8 9 10 VL H870U VL H875U VL H890U 10 12 Wiring Side SIDE B ...
Страница 125: ...A B C D E F G H I J 1 2 3 4 5 6 7 8 9 10 VL H870U VL H875U VL H890U 10 15 Wiring Side SIDE A ...
Страница 126: ...A B C D E F G H I J 1 2 3 4 5 6 7 8 9 10 VL H870U VL H875U VL H890U 10 16 Wiring Side SIDE B ...