Head Switching Point Adjustment - Hitachi DIGITAL 8 VM-D965LE Service Manual

Video camera/recorder
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(1) ODC (Over Discharge Control) Adjustment
Purpose:
To set the minimum voltage required to operate the camera/recorder.
Incompleted Phenomenon:
The usable time of the battery becomes short.
The camera/recorder doesn't operate normally.
Equipment/Jig:
DVM
DC Power Supply (0 - 8V)
Blank Tape
ODC DC Cord
Condition:
Connect the camera, LCD monitor and EVF sections.
Supply power (8.0V + 0.5V) to DC IN via ODC DC cord.
LCD monitor open. (LCD ON)
Cap the lens.
Record mode (Load the brank tape.)
Procedure:
1) Refer to display 5-1.
2) Press 1 key.
3) Refer to display 5-2.
4) Set the voltage of the power supply to 5.8V + 0.05V.
5) Press any key.
6) Refer to display 5-3.
7) Press any key to return to VCR ADJ. MENU display.
(2)
Head Switching Point Adjustment
Note:
Be sure to perform this adjustment after replacing the cylinder assembly and VCA circuit board.
Purpose:
To set the switching point of the video heads during playback.
Incompleted Phenomenon:
Vertical jitter occurs.
Switching noise appears across the bottom of the monitor screen.
Equipment/Jig:
Alignment Tape
Condition:
Playback the alignment tape.
——— _ Display & Figs
Display 5-1
Display 5-2
Display 5-3
VCR ADS. MENU
« SET UP OF ODC
« SETUP OF ODC
HIKE
KEKE ERR
RIERRRERKKIEKEKIKR
ESB
EERE
RERERE
ADJUSTMENT
STARTED
»
ADJUSTMENT
COMPLETED
»
VCR ADJUSTMENT
PRESET POSITION OF
« ODC ADJUSTMENT STARTED »
REE
KERIIIIKEE
KEKE REE
RRR
EEE
EK KEE
IER
ER EEEERIAK
'CAMERA/OFF/VCR'
SWITCH
«
ODC
ADJUSTMENT
COMPLETED
»
(1]
ADJUSTMENT OF ODC
'CAMERA' POSITION
PRESS ANY KEY.
[2]
ADJUSTMENT OF
SET POWER SOURCE
SWITCHING POINT
AT 5.8 (+/- 0.05
[ESC] RETURN TO MAIN MENU
Please select [1], [2] or [ESC]
/
E3-12

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