Sony TC-RX55 - Adjustment Procedures - Mechanical and Electrical; Mechanical Adjustment Steps; Electrical Adjustments - Azimuth and Levels

SECTION 2
ADJUSTMENTS
2-1. MECHANICAL ADJUSTMENTS —Record Mode—
PRECAUTION
1,
Clean
the
following
parts
with
a
denatured-
AF
OSC
alcohol-moistened
swab:
Mend
record/playback
head
pinch
roller
q)
ere
erase head rubber belts
capstan idler 11,000 >!
2.
Demagnetize
the
record/playback
head
with
a
head
er
demagnetizer, LINE IN LINE: OUT
3.
Do
not
use
a
magnetized
screwdriver
for
the
ad-
Standard
Input
Level
justments,
4,
After
the
adjustments,
apply
suitable
locking
compound
source
impedance
10k
Q
to the perts adjusted,
i | ozsv(-1088) V(-
5,
The
adjustments
should
be
performed
with
the
rated
an
bse
power supply voltage unless otherwise noted, Standard Output Level
6, Switch position
sy ee
DOLBY NR : OFF
ye :
DIRECTION MODE : =
TIMER : OFF
* Test tape
a
Record Playback Head Azimuth Adjustment
Procedure :
1, Mode: FWD playback
Torque Measurement
27 to 75g°cm
rw
iclait COT : #08 bre inch)
: 1 to 10g*cm~
FWD Back tension CQ-102C (0.014 to 0.14 oz+ inch)
27 to 75g +*cm
Cel0ene (0.378 to 1,05 oz + inch)
‘ 1 to 10g-cm
REV Back Tension CQ-102RC (0.014 to 0.14 oz inch)
95 to 165g+cm
Eee eg l0e8 (1.33 to 2.31 oz + inch)
test tape
P-4-A100
2-2. ELECTRICAL ADJUSTMENTS (10kHz, —10dB) VTVM
Note :The adjustment should be performed in the order
given in the service manual,
The adjustments should be performed for both
L-CH and R-CH., LINE OUT
* Switches and controls should be set as follows unless 2, Turn the adjustment screw for the maximum output
otherwise specified, levels, If these levels do not match, turn the adjustment
DOLBY NR switch : OFF screw until both of output levels match together within
DIRECTION MODE switch : 22
TIMER switch : OFF
TAPE
SELECT
switch
:
Acconding
to
the
tape
type.
«Standard Record: Siew
Deliver the standard input signal level to the input jack position
and set the REC LEVEL control to obtain the standard
output signal level,
L-CH peak RCH peak