Sony CFS-K1066, Service Manual

– 8 –

Record/Playback Head Azimuth Adjustment

Procedure :
1. Mode : playback

2. Turn the adjustment screw for the maximum output levels. If

these levels do not match, turn the adjustment screw until both
of output levels match together within 3dB.

Phase Check
Mode : Playback

3. After the adjustment, lock the screw with locking compound.

Adjustment Location :

SECTION 4

ADJUSTMENTS

4-1. MECHANICAL ADJUSTMENTS

PRECAUTION

1. Clean the following parts with a denatured-alcohol-moistened

swab :

record/playback head

pinch roller

erase head

rubber belt

capstan

2. Demagnetize the record/playback head with a head demagne-

tizer. (Do not bring the head demagnetizer close to the erase
head.)

3. Do not use a magnetized screwdriver for adjustments.
4. After the adjustments, apply suitable locking compound to the

parts adjusted.

5. The adjustments should be performed with the rated power sup-

ply voltage unless otherwise noted.

Torque Measurement

Torque

Torque Meter

Meter Reading

Playback

CQ-102C

30 – 60 g • cm

(0.42 – 0.83 oz• inch)

Back Tension

CQ-102C

1 – 5 g • cm

(0.014 – 0.069 oz• inch)

Rewind

CQ-201B

more than 75 g • cm

Fast Forward

(more than 1.05 oz• inch)

Tape Tension  Measurement

Mode

Tension Meter

Meter Reading

FWD

CQ-403A

more than 100g (3.53 oz)

4-2. ELECTRICAL ADJUSTMENTS

 TAPE  SECTION

1. The adjustments should be performed in the order give in the

service manual. (As a general rule, playbak circuit adjustment
should be completed before performing recording circuit adjust-
ment.)

2. The adjustments should be performed for both L-CH and R-CH

unless otherwise indicated.

• Switch location

FUNCTION switch

 • • • • • • • • • • • • • • • •

TAPE (RADIO OFF)

PRESET MODE

 • • • • • • • • • • • • • • • • • • • •

MANUAL

GRAPHIC EQUALIZER

 • • • • • • •

center click

BALANCE

 • • • • • • • • • • • • • • • • • • • • • • • • • • • •

center click

VOLUME

 • • • • • • • • • • • • • • • • • • • • • • • • • • • • • •

MAX

MEGA BASS

 • • • • • • • • • • • • • • • • • • • • • • • •

mechanical center

KARAOKE MODE switch

 • • • • •

OFF

Standard Output Level

Output terminal

PHONES

SP (FRONT) OUT

Load impedance

32

Ω

3.2

Ω

Output signal level

0.25V (–10dB)

0.775V (0dB)

Test Tape

Type

Signal

Used for

 WS-48A

3kHz, 0dB

Tape Speed Adjustment

 P-4-A063

6.3kHz, –10dB

Azimuth Adjustment

 0dB=0.775V

set

L

R

test tape
P-4-A063
(6.3kHz, –10dB)

32 

Ω

level meter

phones jack

L-CH
peak

R-CH
peak

L-CH
peak

R-CH
peak

Screw
position

output
level

within
3 dB

within
3 dB

screw position

L

R

in phase    45

°

       90

°

     135

°

        180

°

good

wrong

set

L-CH

R-CH

screen pattern

level meter

phones jack

32 

Ω

32 

Ω

adjustment screw