JVC DR-MV2SEU, Service Manual

Page: 32 / 99

1-32 (No.YD087)
4.4.2 Tape Interchangeability Alignment
Note:
To do these alignment procedures, make sure that the Tracking Control Circuit is set to the preset position every time a tape is
loaded or unloaded.
Equipment required:
Dual Trace Oscilloscope
VHS Alignment Tape (MHPE-L)
Guide Roller Adj. Screwdriver
Flat Screwdriver (Purchase Locally)
Note:
Before starting this Mechanical Alignment, do all Electrical Adjustment procedures.
Adjust the X Value for maximum envelope.
(Use Alignment Tape.)
Check to see that the tape is not creasing
and that there is no slack on the supply
and take-up side Guide Rollers.
(Use a blank tape.)
Adjust the height of the Guide Rollers
(Supply side and take-up side).
(Use a blank tape.)
Loading (Use a blank tape.)
Adjust the envelope.
Check the envelope.
Adjust the Audio Section.
(Azimuth Alignment)
Check the audio output.
Check the following:
1. X Value
2. Envelope
Adjust the X value and envelope.
No good
Completion
No good
OK
OK
OK
No good
No good
OK
Flowchart of Alignment for tape traveling
See 4,4,2,1
See 4,4,2,1
See 4,4,2,2
See 4,4,2,3
See 4,4,2,3
See 4,4,2,4
See 4,4,2,4
See 4,4,2,2 4,4,2,3
See 4,4,2,2 4,4,2,3
Do the final tape-traveling test to see that
the tape runs normally in play mode with-
out creasing or slacking.
OK
Check to see that the tape is not creasing
and that there is no slack on the REV Post.
(Use a blank tape.)
See 4,4,2,5
See 4,4,2,1