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JVC GR-DVL320A Service Manual

JVC GR-DVL320A
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2-21
2.8.1 Tape pattern check
(1) Play back the compatibility adjustment tape.
(2) While triggering the MAIN CN105-21PIN (HID1), ob-
serve the waveform of CN105-20PIN (ENV_OUT).
(3) Confirm that the waveform is free from remarkable
level-down, and entirely parallel and straight.
Moreover, perform the following adjustment as re-
quired.
(4) In case any level-down is observed on the left hand
side, straighten the level by turning the guide roller of
the pole base assembly (supply).
In case any level-down is observed on the right hand
side, however, straighten the level by turning the guide
roller of the pole base assembly (Take-up).
(5) After adjustment, try the unloading motion once, and
confirm that the waveform is flat (straight) when the
tape has been played back again.
Moreover, perform readjustment as required.
(6) When the recording has been played back again, play
back the self-recording to confirm that the waveform
is flat.
Fig. 2-8-3
Fig. 2-8-4
Fig. 2-8-5
CN105
(ENV_OUT)
CN105
(HID1)
Flatten the waveform.
Misalignment of guide roller
height on the take-up side
Misalignment of guide
roller height on the
supply side
PLATE (Adjust)
NOTE:
The plate (adjustment hole plate)
serves as a cover for the service
adjustment access hole.
Refer to page 2-20.
MAIN CN105
20PIN (ENV_OUT)
21PIN (HID1)
JIG CONNECTOR CABLE
JIG BOARD
CN1-9PIN (ENV_OUT)
CN1-11PIN (HID1)
GUIDE ROLLER (SUP) ASSY GUIDE ROLLER (TU) ASSY
Note:
When an adjustment is performed with the lower case cover
attached, first slide the plate open (adjustment hole plate)
and then perform the compatibility adjustment.
Be sure not to damage the cover plate (adjustment hole
plate) when sliding it open to make an adjustment because
it must be re-positioned after completing the adjustment.

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JVC GR-DVL320A Specifications

General IconGeneral
BrandJVC
ModelGR-DVL320A
CategoryCamcorder
LanguageEnglish

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