Preventive Checks And Service Intervals; Confirmation Of Hours Used; Cleaning - JVC HR-XVC20US Service Manual

PREVENTIVE CHECKS AND SERVICE INTERVALS

The following standard table depends on environmental conditions and usage.
Parts replacing time does not mean the life span for individual parts.
Also, long term storage or misuse may cause transformation and aging of rubber parts.
The following list means standard hours, so the checking hours depends on the conditions.
Time 500
hours
Parts Name
Audio Control Head
Full Erase Head
(Recorder only)
Capstan Belt
Pinch Roller
Capstan DD Unit
Loading Motor
Tension Band
T Brake Band
Clutch Ass'y
Idler Arm Ass'y
Capstan Shaft
Tape Running
Guide Post
Cylinder Unit

CONFIRMATION OF HOURS USED

PLAY/REC total hours can be checked on the FIP.
Total hours are displayed in 16 system of notation.
NOTE: If you set a factory initialization, the total hours is reset to "0".
1. Connect the set to TV Monitor.
2. Turn on the POWER.
3. Press both CH UP button on the set and the FF button on
the set for more than 2 seconds.
4. After the confirmation of using hours, turn off the power.

CLEANING

NOTE
After cleaning the heads with isopropyl alcohol, do not
run a tape until the heads dry completely. If the heads are
not completely dry and alcohol gets on the tape, damage
may occur.
1. AUDIO CONTROL HEAD
Clean the Audio Control Head with the cotton stick
soaked by alcohol. Clean the full erase head in the same
manner. (Refer to the figure below.)
1,000 1,500
hours hours
Audio Control Head
2,000 2,500
hours hours
Clean those parts in
contact with the tape.
Clean the rubber, and parts
which the rubber touches.
Replace when rolling
becomes abnormal.
Clean the Head
INIT 00 0E
PLAY/REC 0003
2. TAPE RUNNING SYSTEM
When cleaning the tape transport system, use the gauze
moistened with isopropyl alcohol.
3. CYLINDER
Wrap a piece of chamois around your finger. Dip it in
isopropyl alcohol. Hold it to the cylinder head softly.
Turn the cylinder head counterclockwise to clean it (in the
direction of the arrow). (Refer to the figure below.)
NOTE
Do not exert force against the cylinder head. Do not move
the chamois upward or downward on the head.
Use the chamois one by one.
Notes
: Clean
: Check it and if
necessary, replace it.
Initial setting content of MEMORY IC.
PLAY/REC total hours.
= (16 x 16 x 16 x thousands digit value)
+ (16 x 16 x hundreds digit value)
+ (16 x tens digit value)
+ (ones digit value)
Cylinder Head
1-15