Hitachi VT-FX8000E Service Manual page 29

[if "04" Appears in the Display
Does the capstan
motor turn?
Capstan motor system
circuits faulty. ~
YES
Does the supply reel disk NO
turn (during REV)?
YES
Does the take-up reel disk
turn (during PLAY)?
YES
Are supply reel pulses
present at the base of
Q2104?
YES
Are supply reel pulses
present at 1C901-897
YES
Are supply reel pulses
present at the base of
Q2103?
YES
Are take-up reel pulses
present at 1C901-88?
YES
{C901 faulty.
is the REVERSE signal
at 1C901-60 "Hi"?
IC901 faulty.
Mechanica! parts faulty
+ Torque change gear
» FRarm
+ Drive belt off
Reel sensor faulty
+ Supply reel sensor
Check Q2104 its
peripheral resistors,
and the pattern lines.
Reel sensor faulty
* Take-up reel sensor
Check Q2103 its
peripheral resistors
and the pattern lines.
Mechanical parts faulty:
* Torque change gear
+ FR arm .
+ Idler gears 1,2
* Drive belt off
Note: The cylinder system has priority. if the cylinder motor is not
driven normally, the capstan motor will not be driven.
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