CFS-E2 - Sony Audio Service Manual (repair manual). Page 5

Mode :

 FWD playback

Adjustment Value :

 normal tape speed

Confirm that the frequency difference between the tape top and
tape end is within 1.5 % (45 Hz).

Adjustment element :

 RV601

•

Clean the following parts with a denatured-alchool-moistened
swab:

record/playback head
erase head
pinch rollers
playback head
rubber belts
idlers
capstan

•

Demagnetize the record/playback head with a head
demagnetizer.
(Do not bring a head demagnetiger close to the erase head.)

•

Do not use a magnetized screwdriver for the adjustments.

•

After the adjustments, apply suitable locking compound to the
parts adjusted.

•

Perform adjustment under the specified voltage (DC6V) unless
otherwise specified.

CQ-403A

FWD

70g or more

22.5 to 55g · cm

2.5 to 5g · cm

45 to120g · cm

FWD

FWD

back tension

FF, REW

CQ-102C

CQ-102C

CQ-201B

0 dB = 0.775 V

1.

Adjustments should be performed in the order given. (Generally
playback circuit adjustments should be completed before
preforming recording circuit adjustments.)

2.

Adjustments should be performed for both L-ch and R-ch.
(Switches and controls should be set as follows unless otherwise
specified.)

FUNCTION

: TAPE (RADIO OFF)

TONE

: Maximum

MEGA BASS : ON
VOLUME

: Maximum

WS-48A

Tape speed adjustment

3 kHz, 0 dB

2,980 to 3,020 Hz

B

0 dB = 1 µV

FUNCTION

: RADIO

BAND

: AM

FUNCTION

: RADIO

BAND

: AM

Repeat the above adjustments unit the level meter reading is
maximized.

AM Tracking Adjustment

Make adjustment unit the level meter defection is maximized.

ANT2

620kHz

CT1

1,400 kHz

AM Frequency Coverage Adjustment

Make adjustment unit the level meter defection is maximized.

T1

520kHz (520kHz)

CT4

1,710kHz (1,680kHz)

FM Frequency Coverage Adjustment

Make adjustment unit the level meter defection is maximized.

L2

86.5MHz (87.0MHz)

CT3

109.5MHz (107.8MHz)

FM Tracking Adjustment

Make adjustment unit the level meter defection is maximized.

L1

86.5MHz (87.0MHz)

CT2

109.5MHz (107.8MHz)

FUNCTION switch 

⋅⋅⋅⋅⋅

 FM

Adjust T2 unit the L-channel output minized.

— 5 —

— 6 —

— 7 —

CT2

L1

CT3

S101

CT4

RV1

T2

T1

RV601

RV301

CT1

L2

Adjustment location :

 MAIN board (Component side)

1.

Connect frequency counter to the positions shown below.

2.

Tune the set to 98MHz.

3.

Adjust RV1 for 75.5 to 76.5kHz reading on the frequency
counter.

(        ) : AEP model

(        ) : AEP model

(        ) : AEP model