Sony TC-FX211 - Adjustments and Calibration; Mechanical Adjustments and Torque; Electrical Adjustments Procedures

- TC-FX170
SECTION 2
ADJUSTMENTS
2-1. MECHANICAL ADJUSTMENTS
PRECAUTION
1. Clean the following parts with a denatured-
alcohol-moistened swab: |
-record/play back head pinch roller
erase head rubber belts
capstan . jdler
2. Demagnetize the record/playback head with a
head demagnetizer.
3, Do not use a magnetized screwdriver for the
adjustments. - _
4. After the adjustments, apply suitable locking
compound to the parts adjusted. |
5. The adjustments should be performed with the
rated power supply boltage unless otherwise
noted.
Torque Measurement
FWD 3 1.5 to 6 gecm
cee duaas (0.02 to 0.07 oz*inch) |
63 g°cm or more
Pete,
co
e0le
(0.87
oz*inch
or
more)
2-2. ELECTRICAL ADJUSTMENTS
30 to 70 g-cm
(0.43 to 0.97 oz*inch)
Note: The adjustment should be performed in the
order given in this service manual.
The adjustments should be performed for both»
L-CHandR-CH, |
@ Switches and controls should be set as follows
unless otherwise specified,
DOLBY NR switch: OFF
- @ 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 —
af osc
LINE OUT
LINE IN
'. Procedure:
_ Standard Input Level
|
Standard Output Level.
foutputevs OS W(~ 38 a)
Capstan Motor Speed Adjustment
speed checker
- Mode: playback LFM-30
| or
digital frequency
test tape | counter
WS-48A |
(3kHz, OdB) —
LINE OUT
Specification:
Speed checker | Digital frequency counter
—0.3 ~ +0.3% 2,990 ~ 3,010 Hz
Frequency difference between the beginning
and the end of the tape should be within 0.3%
(10 Hz). _
Adjustment Location
Adjust the speed by using screwdriver. When turning
the screw clockwise, speed is faster,