8-20
HDW-750/750CE V1
2. Note
Perform the tape run system adjustment with the cassette compartment installed in
the unit.
3. Preparations
(1) Set the POWER switch to OFF.
(2) Remove the front lid and the outside panel assembly. (Refer to Section 1-4.)
(3) Clean the following portions with a cleaning cloth moistened with cleaning fluid.
(Refer to Sections 2-1-2, 2-1-3, 2-1-4, 2-1-5, 7-7 and 7-37.)
.
Video heads
.
Upper drum tape running surface
.
Lower drum tape running surface and rabbet guide
.
Stationary heads
.
Cleaning blade
.
All tape guides
.
Capstan shaft
.
Pinch roller
.
S/T plate assembly
.
S/T slider foot assembly
4. Tools/measuring equipment
.
Screwdriver (tool) TG adjustment (45) :
J-6322-420-B
.
Too, 0.89 bit (for repairing) (45) :
J-6322-420-3
.
Hexagon bit (for torque screwdriver) (S : 1.5) :
J-6326-120-A
.
HN-255 assembly :
A-8315-553-A
.
Mirror (small oval type) :
J-6080-840-A
.
Cleaning cloth :
3-184-527-01
.
Cleaning fluid :
9-919-573-01
.
Blank tape (BCT-40HD) :
Commercially available on market
.
Oscilloscope
.
Locking compound :
7-432-114-11
.
Skewer
.
Alignment tape HR2-1A :
8-960-076-11
Contents of recording
*
1 : Any segment of the alignment tape can be used for the CTL head height adjustment.
Time
min. : sec.
Video/Audio
Track
CTL Track
CTL
1 kHz, 0 VU
12 kHz, 0 VU
5.875 MHz
(A ch only)
23.5 MHz
(All ch)
A, C ch-5.875 MHz
A, C ch
First harf : 5.875 MHz
Latter harf : 23.5 MHz
B, D ch
First harf : 23.5 MHz
Latter harf : 5.875 MHz
.
Video tracking adjustment
.
CTL head position adjustment
.
CUE head height adjustment
.
CUE/TC head position adjustment
.
CUE/TC head azimuth adjustment
.
CUE/TC head tape-to-head contact
adjustment
CUE Track
Used in
*
1
00 : 00
15 : 00
20 : 00
25 : 00
30 : 00
(CTL Pulse)
8-2. Tape Run System Adjustment