Table of Contents
Advertisement
STEP
ADJUSTMENT
TEST TAPE
I
MODE
ITEM
SUPPLY SIGNAL
I
l
Tape Guide
Optional
FWD
Height
I
FWD Recording
2
I
Head Height
Optional
FWD
FWD
Erase
3
Head Height
Optional
FWD
Confirmation
4
FWD Playback
Optional
FWD
Head Height
I
FWD Playback
8,000
Hz
5
Head Azimuth
3-3/4 ips
FWD
Alignment
Test Tape
i
FWD Playback
8,000 Hz
6
Head Angle
3-3/4 ips
FWD
Alignment
Test Tape
FWD Recording
Maxell UD
7
Head Azimuth
15,000 Hz
REC
Alignment
-20dBm
FWD Recording
Maxell UD
8
Head Angle
15,000
Hz
REC
Alignment
-20dBm
NOTES:
1.
As perfect head adjustments are vital to tape
deck performance, be sure that these adjust-
ments are carried out properly.
2. Be careful not to use a magnetized driver or
other magnetized tools in the vicinity of
the heads.
3. Use only new tape as level variation is likely
to occur when using old tape.
ADJUSTMENT
REMARKS
i
POINT
Tape Guide
1) Adjust so that tape travels
I
Height
smoothly and does not twist.
Adjustment
2) Do not thread tape over tension
Nut
arm.
Upper edges of Left Ch. head core •
(a) (b)
and tape are the same height.
Upper edge of Left Ch. head core
is 0.1 mm higher than upper egde
of tape
(d) (e)
!
Upper edges of Left Ch. head core
and tape are the same height.
(f)
Maximum output, both channels.
Adjust head gap surface so that
(h)
there is no change in output level
when tension is applied to the
supply reel side.
Maximum output, both channels.
(c)
See NOTE 6.
Adjust head gap surface so that
(g)
there is no change in output level
when tension is applied to the
supply reel side.
Fig. 8-2
4. Demagnetize heads with head demagnetizer
before and after head adjustment.
5. Set tape speed to 7-1/2 ips.
6. Set Tape Selector Switch to NORMAL Posi-
tion.
7. Adjustments outlined in
8-2 are only for
FWD side heads. However, adjustments for
REV side heads are exactly the same.
- - - - - - - - - - - - - - - SERVICE MANUAL
G X - 7 4 7 d b x - - - - - - - - - - - - - - -
33
Advertisement
Chapters
Table of Contents
