Sony CFS-515-S Service manual

CFS-515S

SERVICE MANUAL

Ver. 1.0 1998.07

SPECIFICATIONS

Frequency range FM :

Saudi Arabia model : 87.6 – 107MHz EXCEPT Saudi Arabia model : 87.6 – 108MHz MW : 530 – 1,605kHz SW1 : 2.3 – 7 MHz SW2 : 7 – 22MHz

IF FM : 10.7MHz

MW/SW : 455kHz

Aerials FM/SW : Telescope

MW : Built-in ferrite bar Recording system 4-track, 2-channel stereo Frequency response 70 – 13,000Hz Speakers Full range : 10cm (4 inches) dia., 6ohms,

cone type/Tweeter : 2cm (13/16 inches) dia. Output Headphones jack (stereo minijack), for

16 – 68 ohms impedance headphones Maximum Power output

5W+5W Battery life FM Recording : Sony R20P : Approx. 10hours/

Sony LR20 alkaline : Approx. 20hours

Playback : Sony R20P : Approx. 3.5hours/

Sony LR20 alkaline : Approx. 8hours Power requirements 110 – 120V/220 – 240V AC selectable, 50/60Hz

9V DC, six R20 (size D) batteries Power consumption AC 18 W Dimensions Approx. 697 x 211 x 201.5 mm (w/h/d)

(27 1/2 x 8 3/8 x 8 inches) incl. projecting parts and

controls, not incl. handle Mass Approx. 6.2 kg (13 lb 10 oz) incl. batteries Supplied accessories

AC power cord (1),

E Model

Model Name Using Similar Mechanism NEW Tape Transport Mechanism Type MF-W495-1 17

MICROFILM

Design and specifications are subject to change without notice.

RADIO CASSETTE-CORDER

Specifications ........................................................................... 1

1. GENERAL

Looking at the Controls ..................................................... 3

2. DISASSEMBLY

2-1. Cabinet (Front) Section, Cabinet (Rear) Section....... 4

2-2. BATT (–) Board, BATT (+) Board ............................. 4

2-3. Power (AC) Board, Power (DC) Board...................... 4

2-4. Mechanism Deck, REC SW Board............................. 5

2-5. Chassis Sub Assy, Belt................................................ 5

2-6. VOL Board, Main Board, ECM Board....................... 6

2-7. Tuner Board ................................................................ 6

3. DIAL POINTER INSTALLATION ............................ 7

4. ADJUSTMENTS

4-1. Mechanical Adjustments ............................................ 8

4-2. Electrical Adjustments................................................ 8

5. DIAGRAMS

5-1. Block Diagram...........................................................11

5-2. Printed Wiring Boards – Main Section –.................. 14

5-3. Schematic Diagram – Main Section – ...................... 17

5-4. Printed Wiring Boards – Tuner Section –................. 20

5-5. Schematic Diagram – Tuner Section – ..................... 21

6. EXPLODED VIEWS

6-1. Cabinet (Rear) Section.............................................. 25

6-2. Cabinet (Front) Section ............................................ 26

6-3. Mechanism Deck Section -1..................................... 27

6-4. Mechanism Deck Section -2..................................... 28

6-5. Speaker Section ........................................................ 29

7. ELECTRICAL PARTS LIST.................................... 30

• HOW TO CHANGED THE CERAMIC FILTERS

This model is used two ceramic filters of CF1 and CF2. You must used same type of color marked ceramic filters in order to meet same specifications. Therefore, the ceramic filter must changed two pieces together since it’s supply two pieces in one package as a spare parts.

mark

CF1, 2

Mark Center fequency

red

blue

orange

10.70MHz

10.67MHz

10.73MHz

SAFETY-RELATED COMPONENT WARNING!!

COMPONENTS IDENTIFIED BY MARK ! OR DOTTED LINE WITH MARK ! ON THE SCHEMATIC DIAGRAMS AND IN THE PARTS LIST ARE CRITICAL TO SAFE OPERATION. REPLACE THESE COMPONENTS WITH SONY PARTS WHOSE PART NUMBERS APPEAR AS SHOWN IN THIS MANUAL OR IN SUPPLEMENTS PUBLISHED BY SONY.

– 2 –

LOOKING AT THE CONTROLS

FRONT PANEL

4 3

SECTION 1

GENERAL

!¡89!º

!™

REAR PANEL

1Cassette compartments 2 MIC (microphone) 3 PHONES (headphones) jack (stereo mini-jack) 4 VOLUME control 5 OPR/BATT (operation/battery) indicators 6 FUNCTION selector

RADIO DUBBING HIGH DUBBING NORM TAPE/RADIO OFF

7 BALANCE control 8 5 BAND GRAPHIC EQUALIZER controls

1234

!£

9 PRESET MODE selector !º BAND selector !¡ TUNING control !™ FINE TUNING control !£ Tape operating buttons

r REC (record) button : Deck B only ( PLA Y (playback) button 0 REW (rewind) button ) FF (fast-forward) button p6 STOP/EJECT button P PAUSE button

1 LOCK tab (right side) 2 FM MODE switch 3 Telescopic aerial 4 SPEAKER terminals 5 LOCK tab (Left side) 6 ⁄ AC IN (AC power input) socket 7 Battery compartment

– 3 –

SECTION 2

DISASSEMBLY

The equipment can be removed using the following procedure.

BATT (–) board, BATT (+) board

Cabinet (Front) section

Set

Cabinet (Rear) section

Note : Follow the disassembly procedure in the numerical order given.

2-1. CABINET (FRONT) SECTION, CABINET (REAR) SECTION

Power (AC) board, Power (DC) board Mechanism deck, REC SW board Chassis sub assy, Belt

VOL board, Main board ECM board Tuner board

Screws

(+BTP 3x14)

2-2. BATT (–) BOARD, BATT (+) BOARD

Cabinet (Rear) section

Cabinet (Front) section

2-3. POWER (AC) BOARD, POWER (DC) BOARD

Cabinet (Rear) section

BATT (+) board

Screws (+BTP 3x10)

BATT (–) board

Bracket (AC)

Screw

(+BTP 3x10)

Screws

(+BTP 3x10)

Power (DC) board

– 4 –

Power (AC) board

Screws

(+BTP 3x10)

Screws (+BTP 3x10)

Shield plate (T)

2-4. MECHANISM DECK, REC SW BOARD

Cabinet (Front) section

Screws

(+BTP 3x10)

Screw

(+PTT 2x6)

Cassette lid (L)

Button (ST/EJ)

2-5. CHASSIS SUB ASSY, BELT

Cassette lid (R)

REC SW board

Screws

(+BTP 3x10)

Mechanism deck section

Flywheel assy

Belt

Deck A

Screw (+PTT 2x5)

Chassis sub assy

Deck B

Flywheel ass

Belt

Screws (+PTT 2x5)

– 5 –

2-6. VOL BOARD, MAIN BOARD, ECM BOARD

)

Knob (VOL)

VOL board

2-7. TUNER BOARD

Screw

(+BTP 3x10)

Screw (+BVTP 3x6)

ECM board

Screw (+BTP 3x10)

Main board

Knob (F/T)

Tuner board

Claw

Screw (+BTP 3x10)

Tuner board

Screws (+BVTP 3x10)

– 6 –

Chassis (Tune)

Screw (+BTP 3x10

SECTION 3

)

DIAL POINTER INSTALLATION

Note : Follow the installation procedure in the numerical order given.

Cabinet (Front)

– 1

Knob (Tune)

Cabinet (Front)

Pointer

Marked line

– 2

1 Set the pointer into the grooves of the cabinet

(Front) in the order of a, b and c.

2 Turn the knob (Tune) in the direction of the arrow ,

then set the pointer by aligning it with the marked line of the cabinet (Front).

Cabinet (Front)

Screw (+BTP 3x10)

Pointer

Gear (Midway)

Gear (VC)

Chassis (Tune)

Screw (+BTP 3x10

Screws (+BVTP 3x10)

– 7 –

Tuner board

3 Turn the gear (VC) fully counterclockwise. 4 Turn the gear (Midway) fully clockwise. 5 Mount the tuner board to the chassis and tighten

with screws.

6 Mount the chassis (Tune) to the cabinet (Front) and

tighten with screws.

SECTION 4

ADJUSTMENTS

4-1. MECHANICAL ADJUSTMENTS

PRECAUTION

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

record/playback head playback head pinch roller erase head rubber belt capstan

2. Demagnetize the record/playback head with a head demagnetizer. (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 supply voltage unless otherwise noted.

Torque Measurement

Torque Torque Meter Meter Reading

Playback CQ-102C

Back Tension CQ-102C

Rewind

Fast Forward (0.63 – 1.31 oz• inch)

CQ-201B

18 – 60 g • cm

(0.25 – 0.83 oz• inch)

1 – 5 g • cm

(0.014 – 0.069 oz• inch)

45 – 95 g • cm

Tape Speed Adjustment

Procedure :

Mode : Playback

test tape WS-48A (3kHz, 0dB)

set

(Normal speed)

1. Deck A to playback mode.

2. Adjust the RV303 for 2,985 – 3,015Hz reading on digital frequency counter.

3. Frequency difference between the beginning and the end of the tape should be within 1% (30Hz).

(High speed)

4. Deck B to record mode.

5. Deck A to high speed playback mode.

6. Confirm that the reading of the digital voltmeter becomes 5,500 – 6,500Hz.

7. Frequency difference between the beginning and the end of the tape should be within 1% (30Hz).

Adjustment Location :

digital frequency

Ω

phones jack

counter

T ape Tension Measurement

Mode Tension Meter Meter Reading

FWD CQ-403A more than 60g (2.12 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 adjustment.)

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

Standard Output Level

Output terminal PHONES SP (FRONT) OUT

Load impedance 32Ω 6Ω

Output signal level 0.25V (–10dB) 0.775V (0dB)

RV303 : Tape Speed Adjustment

[ MAIN BOARD ]

(Component side)

IC201

Test T ape

Type Signal Used for

WS-48A 3kHz, 0dB Tape Speed Adjustment

0dB=0.775V

– 8 –

TUNER SECTION 0dB=1 µV

• Switch location FUNCTION switch • • • • • • • • • • • • • • • • • RADIO PRESET MODE • • • • • • • • • • • • • • • • • • • • • MANUAL GRAPHIC EQUALIZER • • • • • • • • center click BALANCE • • • • • • • • • • • • • • • • • • • • • • • • • • • • • center click VOLUME• • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • MAX MEGA BASS • • • • • • • • • • • • • • • • • • • • • • • • • mechanical center

MW Section

Procedure :

BAND switch : MW FINE TUNING control : mechanical center

AM RF signal generator

30% amplitude modulation by 400Hz signal. Output level : as low as possible

SW Section

Put the lead-wire antenna close to the set.

Procedure :

BAND switch : SW1, SW2 FINE TUNING control : mechanical center

AM RF signal generator

12PF

30% amplitude modulation by 400Hz signal. Output level : as low as possible

FM Section

telescopi antenna terminal

Procedure :

BAND switch : FM FINE TUNING control : mechanical center

FM RF signal generator

0.01

telescopi antenna terminal

22.5kHz frequency deviation by 400Hz signal. Output level : as low as possible

level mete

Ω

set

phones jack

• Repeat the procedures in each adjustment several times, and the frequency coverage and tracking adjustments should be finally done by the trimmer capacitors.

no mark : COM < > : Saudi Arabia model

AM IF ADJUSTMENT