Sanyo JJ-P4 - Adjustment Procedures; General Remarks for Adjustment; Equipment Required for Adjustment

ADJUSTMENT PROCEDURES
GENERAL REMARKS , |
@
Before
adjusting
the
mechanism
of
this
unit,
wipe
the
tape
@
This
model
features
the
Auto
Reverse
Mechanism.
Then
the
contacting surfaces clean as well as the contacting surfaces tape transport direction is distinguished as follows:
of the driving parts with a cotton swab or a soft cloth soaked = FORWARD DIRECTION:
in alcohol. Trouble may occur because of oil and grease The tape is wound counter-clockwise.
stains. = REVERSE DIRECTION: |
The tape is wound clockwise.
@ Handie the belt carefully the because grease easily attaches _ z se |
to it. Then check the used rubber parts. If the rubber has @ When performing the adjustment while sieve pack the test
deteriorated or is scratched, replace the parts with new one. tape, set the tape transport to the FORWARD DIRECTION.
EQUIPMENT REQUIRED | |
@ FrequencyCounter | , 7 -_ @ Alignment Tool
@ Dualtrace Oscilloscope , | - NOTE:
e VTVM (2 sets) OO Before the Adjustments, set the control and switch as follows:
@
Dummy
Load
(160)
-
|
|
=.
m
.
Dolby
NR
Switch
...................
aula
ascadaswastenacedaet
OFF
@
TestTapes
|
|
=
VolumeControl
......
eh
Ee
nee
Poe
ae
.....
AS
desired
°
3kHz
test
tape
(Example:
TEAC
MTT-
111)
=
Supply
the
regulated
DC
1
BV
power
to
the
Ext.
Power
Jack
es 10kHz test tape (Example: A: BEX TCC-1 53) for the adjustment.
=» ADJUSTMENT PROCEDURE
Adjustment Dummy | _ Measuring _ Measuring
|
Tape
Speed
Speed
|
Frequency
Counter
|
|
Frequency
Counter
|
TEAC
MTT-111
|
MTT-111
P301
3,
|
3.000H2
3%
|
+3%
Headphones
pe
)
TM
oe
|
‘Oscilloscope
—-
Wavetorne
|
in
pies:
Potentiometer
for
Tape
Speed
Adjustment
Azimuth
Adjusting
Holes
Forward
Side
|
Reverse Side