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CCD-F35,/F36/F280)
SECTION 8
MECHANISM BLOCK ADJUSTMENTS
Mechanism Block Adjustments
Refer to the separate
"8mm
Video
Mechanical
Adjustment
Manual III U Mechanism" for adjustment and checking of the
mechanism block and for replacement of mechanical parts.
Refer to the following for setting of track shift mode.
8-1. TRACK SHIFT MODE SETTING
8-2. PREPARATION FOR ADJUSTMENT
[Setting method]
1) Perform cleaning of the tape running surface (tape guides,
© Connect the TEST A terminal and TEST B terminal to the
drums, capstan shafts, and pinch rollers).
COM terminal. Connect Pin © and Pin @ of CN508 on the
2) Connection of oscilloscope
VK-1 board to Pin @. (See Fig. 8-1.)
CH 1: RF signal output (V RF OUT) of drum head
Pin @ (V RF OUT) of CN102 on the CO-2 board
External trigger: Extemal trigger output (RF SW.P)
Pin @ of CN102 on the CO-2 board.
3) Play back the alignment tape (WR5-IN, Ref No. J-5) for
tracking.
4)
Confirm that the RF waveform on oscilloscope at both
entrance and exit sides is flat. (See Fig. 8-3.)
Perform the adjustment described below if not flat.
VK-1 board
[System control, servo board
(CO-2 board) _
To oscilloscope
(GND)
a
[IP
>
Pin 7
Check pin connector
(CN102)
we
Pin@
To oscilloscope
(V RF OUT)
Fig. 8-2.
Pin®
a
To trigger
(RF SWP)
aes
Must be flat
ars
Fig. 8-3.
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