Hitachi DV-RF7U, Руководство по обслуживанию

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5 - 2
Adjustment > VCR Electrical Adjustment
5-2 VCR Electrical Adjustment
5-
2
-1 Reference
1) X-Value (Tracking center) adjustment and “Head switching adjustment” can be performed, using
the remote control. (See Fig.5-2-1)
2) When replacing the VCR Main PCB Micom (IC601) and NVRAM (IC603 ; EEPROM), be sure to
perform the “Head switching adjustment” and “NVRAM option setting”.
3) When replacing the cylinder ass’y, be sure to adjust the “X-Value” and perform “Head switching
adjustment”.
4) How to adjust:
- Intermittently short-circuit the Test Points on VCR Main PCB with pincers to the adjustment
mode. (Make sure that “TEST” appears in the display for approx. 5 seconds.)
- If the corresponding adjustment button is pressed while “TEST” is being displayed, the
adjustment will be performed automatically.
- When adjustment is finished, turn power off to release the adjustment mode.
(1) Locations of reference buttons on remote control
Fig. 5-2-1 Location of reference button of remote control
(2) TEST location for adjustment mode setting
Fig. 5-2-2 Locations of Test points
Tracking Center Setting :
Head Switching Adjustment :
1 2 3
4 5 6
7 8 9
0
CANCEL
100+
VCR
AUDIO VCR DVD
DVD
DUBBING DISPLAY
REC MODE SURROUND
PLAY LIST
MENU
INPUT
MAIN MENU
MARKER
TIMER VCR Plus+ P in P TIME SLIP
DISC
NAVIGATION
TOP MENU
M.SKIP
CH
OPEN/
CLOSE
/ I
PLAY
STOP
SKIP
STEP
REC
PAUSE
DVD
0 5
1
100+
0
Operation method:
Press first, and then press .
Do not simultaneously press them. 0 5
Short-Circuit for few
seconds and release
(Just one time)
VCR Main PCB