2-44
DSR-70/70P
2-12. HEAD CLEANING WHEN HEAD
CLOGGING OCCURS
Clean the video head as follows when the head gets dirty.
. Procedure to use the cleaning cassette
1. Insert the cleaning cassette DVM12CL in this unit.
Confirm that the unit enters the play mode, the
[PLAY] key lights and the display appears.
Note : Use only the DVM12CL cleaning cassette
tape.
If another cleaning cassette tape is used,
abnormal abrasion or breakage of the
video head could occur.
2. The cleaning cassette tape is automatically ejected after
running for 10 seconds.
Note : Do not rewind the cleaning cassette tape to
use it again.
3. Make sure that the head is no longer dirty.
If the video head is still dirty after step 2 above, clean
the video head as follows.
. Procedure to use the cleaning cloth
1. Soak the cleaning cloth with cleaning liquid and bring
it into contact lightly with the video head.
2. Turn the upper drum slowly by hand in the rotating
direction of the head (counterclockwise when viewed
from the top) to clean the video head.
Note :
..
..
. Never move the cleaning cloth in the
vertical direction against the video head
because it may break the head.
..
..
. Turn the power switch off when cleaning
the video head.
2-13. OPERATING THE VCR WITHOUT A
CASSETTE TAPE
When adjusting the mechanical block, the VCR is
sometimes operated without a cassette tape. This section
describes how to do this.
1. Remove the cassette compartment from this unit.
2. Turn on switches S101-3 and 4 of the SV-203 board,
then turn on the main power.
The operating method of each mode is as follows.
. THREADING
While pressing the S/T reel motors, press the
[STOP] key. The upper drum rotates, threading
ring rotates. The unit enters the threading mode.
The tension arm and the threading ring move to the
specified position, then the threading is completed.
This condition in which the threading is completed is
referred to as the STOP status.
. PLAY
Press the [PLAY] key.
The pinch roller is pressed against the capstan shaft
to enter the PLAY status.
When the [PLAY] key is pressed during threading,
the pinch roller is pressed against the capstan shaft to
enter the PLAY status after the threading has
completed.
. FF
Press the [F|FWD] key.
The pinch roller is pressed against the capstan shaft
to set the FWD.SEARCH to five-times speed.
. REW
Press the [REW] key.
The pinch roller is pressed against the capstan shaft
to set REV.SEARCH to five-times speed.
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