Advertisement
TC-818
SECTION
2
ADJUSTMENTS
2-1.
MECHANICAL
ADJUSTMENTS
2-2.
ELECTRICAL
ADJUSTMENTS
- PRECAUTION
1,
Clean
the following
parts with a denatured-
Note :The adjustment should be performed
in the order
alcohol-moistened
swab :
given
in the service
manual,
record/playback
head
pinch roller
The
adjustments
should
be performed
for both
erase
head
rubber
belts
L-CH
and
R-CH,
capstan
idler
«Switches
and
controls
should
be set as
follows
unless
2.
Demagnetize
the
record/playback
head
with
a head
otherwise
specified.
demagnetizer,
DOLBY
NR
switch
: OFF
3.
Do
not
use
a
magnetized
screwdriver
for
the
ad-
TAPE
SELECT
switch
: TYPE
I
justments,
DIRECTION
MODE
switch
pera
4,
After the adjustments, apply suitable locking compound
to the perts adjusted,
¢ Standard
Record:
Deliver
the standard
input signal level to the input jack
and set the REC LEVEL
control to obtain the standard
output
signal
level:
—Record
Mode—
Torque
Measurement
27 to 75g +cm
pases
Oe
c
es
ne
inch)
'
1 to 10g°>cm
WwW:
FWD
Back tension
CQ-102C
(0.014 to 0.14 oz
inch)
AF OSC
VTVM
27 to 75g-cm
€)
attenuator
all
vee
2
et
aa
si
'orto
1 to
10
| | Coe
|
.
o
10g°cm
.
|
ee
|
REV Back Tension
CQ-102RC
(0.014 to 0.14 oz: inch)
;
Standard
Input Level
eee
eee
ee
source
impedance
10k Q
input level
0.25V (-10dB)
Standard
Output
Level
es
ee
95 to 165g+-cm
eLocation
of LINE
IN/OUT
AUDIO
Board
CNP301
LINE IN
LINE OUT
L-CH
L-CH
LINE
IN
' LINE
OUT
R-CH
R-CH
output level
0.44V (—5dB)
* Test
tape
P-4-A100
10kHz,
—10dB
Azimuth
Adjustment
P-4-L300
315Hz, 0dB
PB LEVEL
Adjustment
WS-48B
3kHz, 0dB
Tape Speed Adjustment
Record "Playback
Head
Azimuth
Adjustment
Procedure :
1,
Mode:
FWD
playback
test
tape
P-4-A100
(10kHz,
— 10dB)
VT VM
LINE OUT
Advertisement
