Sony CFS-E2 Service Manual
CFS-E2
MICROFILM
SERVICE MANUAL
Ver 1.0 1998.04
SPECIFICATIONS
• Frequency range
FM : 87.6 – 108 MHz/AM : 530 – 1,710 kHz (US, Canadian)
FM : 87.6 – 107 MHz/AM : 531 – 1,602 kHz (AEP)
• Antennas FM : Telescope/AM : Built-in ferrite bar
• Recording system 4-track, 2-channel stereo
• Frequency response 100-10,000 Hz
• Speakers Full-range : 5.7 cm (2
• Output Headphones jack (stereo minijack), for 8-32 ohm
impedance headphones
• Power output 1 W+1 W (at 10% harmonic distortion in
DC operation)
• Battery life
FM recording
Sony SUM-3 (NS) : Approx. 2 hours
Sony AM3 (N) alkaline:Approx. 5 hours
playback
Sony SUM-3 (NS) : Approx.1.5 hours
Sony AM3 (N) alkaline:Approx. 4 hours
1
/4 inches) dia, cone type
• Power requirements 120V AC, 60Hz (US, Canadian)/
220V AC, 50/60Hz (AEP)/ 6V DC, four size
AA (R6) batteries
• Power consumption DC 4 W
• Dimensions Approx. 285 × 101 × 58 mm (w/h/d)
(11
• Mass Applox. 720 g (1 lb 94 oz)(incl.batteries)
• Supplied accessory AC power adaptor(1)
Design and specifications are subject to change without notice.
US Model
Canadian Model
AEP Model
Model Name Using Similar Mechanism NEW
Tape Transport Mechanism Type MF-E2
1
/4 × 4 × 23/8 inchs)incl. projecting parts and controls
RADIO CASSETTE-CORDER
TABLE OF CONTENTS
1. GENERAL ··············································································2
2. DISASSEMBLY
2-1. REAR CABINET SECTION ············································4
2-2. MAIN SECTION ······························································4
3. MECHANICAL ADJUSTMENTS ········································ 5
4. ELECTRICAL ADJUSTMENTS
4-1. TAPE RECODER SECTION ············································ 5
4-2. TUNER SECTION ···························································· 6
5. DIAGRAMS
5-1. PRINTED WIRING BOARD ··········································· 8
5-2. SCHEMATIC DIAGRAM — AUDIO SECTION — ····· 11
5-3. SCHEMATIC DIAGRAM — TUNER SECTION — ···· 14
5-4. IC BLOCK DIAGRAMS ················································16
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.
6. EXPLODED VIEWS
6-1. FRONT CABINET SECTION········································ 17
6-2. REAR CABINET SECTION ·········································· 18
6-3. MECHANISM DECK-1 ················································· 19
6-4. MECHANISM DECK-2 ················································· 20
7. ELECTRICAL PARTS LIST··············································· 21
ATTENTION AU COMPOSANT AYANT RAPPORT
À LA SÉCURITÉ!
LES COMPOSANTS IDENTIFÉS PAR UNE MARQUE ! SUR LES
DIAGRAMMES SCHÉMATIQUES ET LA LISTE DES PIÈCES SONT
CRITIQUES POUR LA SÉCURITÉ DE FONCTIONNEMENT. NE
REMPLACER CES COMPOSANTS QUE PAR DES PIÈSES SONY
DONT LES NUMÉROS SONT DONNÉS DANS CE MANUEL OU
DANS LES SUPPÉMENTS PUBLIÉS PAR SONY.
SECTION 1
GENERAL
This section is extracted
from instruction manual.
— 2 —
— 3 —
SECTION 2
d
DISASSEMBLY
Note : Follow the disassembly procedure in the numerical order given.
2-1. REAR CABINET
1
Four screws (+ BVTP 3×24)
3
Connector (CN305)
2-2. MAIN BOARD
2
by pressing here.
2
Connector (CN304)
Unlock the claw
4
1
Two screws (+P 2.6× 8)
Connector (CN1)
3
Connector (CN301)
— 4 —
4
Main boar
SECTION 3
MECHANICAL ADJUSTMENTS
CFS-E2
SECTION 4
ELECTRICAL 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.
Torque Measurement
Mode
FWD
FWD
back tension
FF, REW
Tape T ension
Torque Meter
CQ-102C
CQ-102C
CQ-201B
Meter reading
22.5 to 55g · cm
2.5 to 5g · cm
45 to120g · cm
4-1. TAPE RECODER SECTION 0 dB = 0.775 V
PRECAUTION
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.)
• Switch position
FUNCTION : TAPE (RADIO OFF)
TONE : Maximum
MEGA BASS : ON
VOLUME : Maximum
• Test tape
Test T ape
WS-48A
Signal
3 kHz, 0 dB
Tape speed adjustment
Used for
Tape Speed Adjustment
Procedure:
Mode : FWD playback
Adjustment Value : normal tape speed
DECK
B
Confirm that the frequency difference between the tape top and
tape end is within 1.5 % (45 Hz).
Adjustment element : RV601
Frequency counter
2,980 to 3,020 Hz
4-2. TUNER SECTION 0 dB = 1 µV
• AM section
FUNCTION : RADIO
BAND : AM
• FM 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)
AM Tracking Adjustment
Make adjustment unit the level meter defection is maximized.
ANT2 620kHz
CT4 1,400 kHz
( ) : 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:
FM Separation Adjustment
Adjustment method:
FUNCTION switch ⋅⋅⋅⋅⋅ FM
Adjust T2 unit the L-channel output minized.
FWD
Mode
Tension Meter
CQ-403A
Meter reading
70g or more
Repeat the above adjustments unit the level meter reading is
maximized.
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.
Adjustment location : MAIN board (Component side)
RV601
T2
RV1
L4
CT2
T1
CT4
RV301
— 5 — — 6 — — 7 —
S101
CT1
CT3
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