8-46
HDW-750/750CE V1
8-2-9. CUE/TC Output Level Check
Tools
.
Alignment tape HR2-1A : 8-960-076-11
.
HN-255 assembly :
A-8315-553-A
.
Oscilloscope
Preparations
A
B
Specifications 1 :
x
100
<
5 % (fluctuation)
A
B
_
A
Specifications 2 :
x
100
>
70 %
C
D
8-2. Tape Run System Adjustment
1.
Turn off the main power.
2.
Remove the shoulder pad and the plate.
3.
Connect the HN-255 assembly to the MDC-
13 board.
5-pin connector on the HN-255 assembly :
CN902/MDC-13 board
8-pin connector on the HN-255 assembly :
CN903/MDC-13 board
4.
Connect an oscilloscope.
CH-1 : PB CUE/Circuit board on the HN-255
assembly
TRIG : CH-1
5.
Turn on the main power.
6.
Insert the alignment tape HR2-1A.
Check Procedure
1. CUE output level check
(1) Play back the alignment tape HR2-1A (from
15 : 00 to 25 : 00).
(2) Confirm that fluctuation of the CUE output
level satisfies the specification 1.
(3) Play back the alignment tape HR2-1A (from
00 : 00 to 15 : 00) in PLAY state.
(4) Take note of the CUE output level. (Level at
this state is named C.)
(5) Enter the REV
x
1 state.
(6) Confirm that fluctuation of the CUE output
level (level at this state is named D) satisfies
the specification 2.
(7) When the specification 2 is not satisfied :
.
When the tape guide has no lower flange,
perform the T3 and T5 tape guide height
adjustment. (Refer to Section 8-2-1, tape
guide height adjustment
[A]
)
.
When the tape guide has the lower flange,
perform the T3 tape guide height adjust-
ment. (Refer to Section 8-2-1, tape guide
height adjustment
[B]
)
How to enter the REV
x
x
x
x
x
1 mode
(1) Set the
x
1 REV SEARCH to ON using the
VTR maintenance menu, A40 : PATH
MODE SEL.
(2) After pressing the PLAY button, press the
REW button. (Both the PLAY and REW
buttons on the keyboard turn on.)
P2
x
4
Plate
Shoulder pad
Screws
(with drop-safe)
