Sony CFS-E2 Service Manual

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SECTION 2 DISASSEMBLY
Note : Follow the disassembly procedure in the numerical order given.

2-1. REAR CABINET
1 Four screws (+ BVTP 3 × 24)

3 Connector (CN305)

4 Connector (CN1)

2 Unlock the claw by pressing here.

2-2. MAIN BOARD

2 Connector (CN304)

1 Two screws (+P 2.6 × 8)

4 Main board 3 Connector (CN301)

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SECTION 3 MECHANICAL ADJUSTMENTS
· PRECAUTION 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.

SECTION 4 ELECTRICAL ADJUSTMENTS
4-1.
1.

CFS-E2

TAPE RECODER SECTION

0 dB = 0.775 V

2.

PRECAUTION Adjustments should be performed in the order given. (Generally playback circuit adjustments should be completed before preforming recording circuit adjustments.) Adjustments should be performed for both L-ch and R-ch. (Switches and controls should be set as follows unless otherwise specified.) Switch position FUNCTION : TAPE (RADIO OFF) TONE : Maximum MEGA BASS : ON VOLUME : Maximum Test tape Test Tape WS-48A Signal 3 kHz, 0 dB Used for Tape speed adjustment

Tape Speed Adjustment Procedure: Mode : FWD playback

4-2.
·

TUNER SECTION

0 dB = 1 µV

AM section FUNCTION : RADIO BAND : AM

( ) : AEP model AM Frequency Coverage Adjustment Make adjustment unit the level meter defection is maximized. T1 520kHz (520kHz) CT3 1,710kHz (1,680kHz)

FM Separation Adjustment Adjustment method: FUNCTION switch FM

·

·

AM Tracking Adjustment Make adjustment unit the level meter defection is maximized. ANT2 620kHz CT4 1,400 kHz Adjustment Value : normal tape speed DECK B Frequency counter 2,980 to 3,020 Hz ( ) : AEP model FM Frequency Coverage Adjustment Make adjustment unit the level meter defection is maximized. L2 86.5MHz (87.0MHz) CT1 109.5MHz (107.8MHz) ( ) : AEP model FM Tracking Adjustment Make adjustment unit the level meter defection is maximized. L1 86.5MHz (87.0MHz) CT2 109.5MHz (107.8MHz) FM VCO Adjustment Procedure:

· · ·

·

Adjust T2 unit the L-channel output minized.

·

Torque Measurement Mode FWD FWD back tension FF, REW Tape Tension Mode FWD Tension Meter CQ-403A Meter reading 70g or more Torque Meter CQ-102C CQ-102C CQ-201B Meter reading 22.5 to 55g · cm 2.5 to 5g · cm 45 to120g · cm

Confirm that the frequency difference between the tape top and tape end is within 1.5 % (45 Hz). Adjustment element : RV601

FM section FUNCTION : RADIO BAND : AM

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

1. 2. 3.

Connect frequency counter to the positions shown below. Tune the set to 98MHz. Adjust RV1 for 75.5 to 76.5kHz reading on the frequency counter.

Adjustment location : MAIN board (Component side)

T2 CT2 RV601 L4 RV1 S101

T1 CT4

CT3 CT1

RV301

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CFS-E2

SECTION 5 DIAGRAM

5-1.

PRIINTED WIRNG BOARD

1 A

2

3

4
FM TELESCOPIC ANTENNA ANT1

5

6

7

8

9
SP901 SP902

10

11
DRY BATTERY SIZE "AA" (IEC DESIGNATION R6) 4PCS,3V RED

12

13

MAIN BOARD

S302

C901 BLK

M

M901 REEL CAPSTAN MOTOR S902 MD POWER

L3

RED

B
IC101
AEP

L601 BLU YEL

4

2

C27 C28

C102

CT4

CT2 RED

C

ANT2 CT3 3 1 CT1 S101 S301

C312

RV301

1-666-349-

C105

S102

C113

AM­FM­TAPE OFF

RV301 VOLUME

11 (11)

D
MIC MIC901 HRP901 L R HE901

ON

OFF

MEGA BASS WHT

J302

· Semiconductor

Location
DC IN 6V
­ +

Ref. No. Location
J301

E

JACK BOARD

F

1-666-350-

11 (11)

D1 D2 D101 D201 D301 D302 D303 D304 D305 D306 D307 D601 D602 IC1 IC101 IC201 IC601 Q301 Q302 Q601 Note: · ·

B-4 B-4 C-6 C-9 C-7 B-9 D-4 D-8 C-11 D-5 C-11 C-10 C-11 C-3 B-7 B-9 B-11 B-6 C-4 B-10

: parts extracted from the component side. : Parts on the side wich is seen.

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