Read Sony CFS-828SMK2 Service Manual online
1
Model Name Using Similar Mechanism
CFS-828S
Tape Transport Mechanism Type
MF-W828-117
SERVICE MANUAL
E Model
CFS-828SMK2
RADIO CASSETTE-CORDER
Frequency range
FM: 87.5 - 107 MHz
MW: 530 - 1,605 kHz
SW1: 2.3 - 7 MHz
SW2: 7 - 22 MHz
MW: 530 - 1,605 kHz
SW1: 2.3 - 7 MHz
SW2: 7 - 22 MHz
IF
FM: 10.7 MHz
MW/SW: 455 kHz
MW/SW: 455 kHz
Antennas
FM/SW: Telescopic
MW: Built-in ferrite bar
MW: Built-in ferrite bar
Recording system
4-track, 2-channel stereo
Frequency response
80 - 12,500 Hz
Speakers
Full range: 10 cm (4 inches) dia., 6
Ω, cone type/
Tweeter: 2 cm (
13/16
inches) dia.
Output
Headphones jack (stereo minijack), for 16 - 68
Ω
impedance headphones
Maximum Power output
9W
SPECIFICATIONS
Battery life
FM Recording: Sony R20P: Approx. 9 hours/
Sony LR20 alkaline: Approx. 23 hours
Playback: Sony R20P: Approx. 3 hours/
Sony LR20 alkaline: Approx. 8 hours
Sony LR20 alkaline: Approx. 23 hours
Playback: Sony R20P: Approx. 3 hours/
Sony LR20 alkaline: Approx. 8 hours
Power requirements
110 - 120 V/220 - 240 V AC selectable, 50/60 Hz
9 V DC, six R20 (size D) batteries
DC IN 12V jack
9 V DC, six R20 (size D) batteries
DC IN 12V jack
Power consumption
AC 18 W
Dimensions
Approx. 679
× 263.5 × 239.5 mm (w/h/d)
(26
6/8
× 10
3/8
× 9
4/9
inches) incl. projecting parts
and controls, not incl. handle
Mass
Approx. 7.3 kg (16 lb 1 oz) incl. batteries
Supplied accessory
AC power cord (1)
Design and specifications are subject to change without
notice.
notice.
Ver 1.0 2003.12
9-961-447-01
2003L04-1
© 2003.12
Sony Corporation
Personal Audio Company
Published by Sony Engineering Corporation
2
TABLE OF CONTENTS
1. GENERAL
............................................................................ 3
2. DISASSEMBLY
2-1. Cabinet (Front) Assy, Cabinet (Rear) Assy ......................... 4
2-2. Power and DC IN Boards .................................................... 5
2-3. Mechanism Deck ................................................................. 5
2-4. H/P, LED2, Maxi Bass, VOL and Main Boards .................. 6
2-5. F/T and Tuner Boards .......................................................... 6
2-6. Jog and LED1 Boards ......................................................... 7
2-7. REC SW Board, Belt and Motor Assy (W) (M301) ........... 7
2-2. Power and DC IN Boards .................................................... 5
2-3. Mechanism Deck ................................................................. 5
2-4. H/P, LED2, Maxi Bass, VOL and Main Boards .................. 6
2-5. F/T and Tuner Boards .......................................................... 6
2-6. Jog and LED1 Boards ......................................................... 7
2-7. REC SW Board, Belt and Motor Assy (W) (M301) ........... 7
3. DIAL POINTER SETTING
............................................. 8
4. MECHANICAL ADJUSTMENTS
................................. 9
5. ELECTRICAL ADJUSTMENTS
Tape Section ............................................................................ 9
Tuner Section ......................................................................... 10
Tuner Section ......................................................................... 10
6. DIAGRAMS
6-1. Circuit Boards Location .................................................... 12
6-2. Block Diagram .................................................................. 13
6-3. Printed Wiring Boards – Tuner Section – ......................... 14
6-4. Schematic Diagram – Tuner Section – .............................. 15
6-5. Printed Wiring Boards – Main Section – .......................... 16
6-6. Schematic Diagram – Main Section (1/2) – ...................... 17
6-7. Schematic Diagram – Main Section (2/2) – ...................... 18
6-8. Printed Wiring Boards – Power Section – ......................... 19
6-9. Schematic Diagram – Power Section – ............................. 20
6-2. Block Diagram .................................................................. 13
6-3. Printed Wiring Boards – Tuner Section – ......................... 14
6-4. Schematic Diagram – Tuner Section – .............................. 15
6-5. Printed Wiring Boards – Main Section – .......................... 16
6-6. Schematic Diagram – Main Section (1/2) – ...................... 17
6-7. Schematic Diagram – Main Section (2/2) – ...................... 18
6-8. Printed Wiring Boards – Power Section – ......................... 19
6-9. Schematic Diagram – Power Section – ............................. 20
7. EXPLODED VIEWS
7-1. Cabinet (Rear) Section ...................................................... 23
7-2. Cabinet (Front) Section-1 .................................................. 24
7-3. Cabinet (Front) Section-2 .................................................. 25
7-4. Mechanism Deck Section-1 .............................................. 26
7-5. Mechanism Deck Section-2 .............................................. 27
7-6. Mechanism Deck Section-3 .............................................. 28
7-7. Speaker Section ................................................................. 29
7-2. Cabinet (Front) Section-1 .................................................. 24
7-3. Cabinet (Front) Section-2 .................................................. 25
7-4. Mechanism Deck Section-1 .............................................. 26
7-5. Mechanism Deck Section-2 .............................................. 27
7-6. Mechanism Deck Section-3 .............................................. 28
7-7. Speaker Section ................................................................. 29
8. ELECTRICAL PARTS LIST
........................................ 30
SAFETY-RELATED COMPONENT WARNING!!
COMPONENTS IDENTIFIED BY MARK
0
OR DOTTED LINE
WITH MARK
0
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.
REPLACE THESE COMPONENTS WITH SONY PARTS WHOSE
PART NUMBERS APPEAR AS SHOWN IN THIS MANUAL OR
IN SUPPLEMENTS PUBLISHED BY SONY.
Notes on Chip Component Replacement
• Never reuse a disconnected chip component.
• Notice that the minus side of a tantalum capacitor may be dam-
• Notice that the minus side of a tantalum capacitor may be dam-
aged by heat.
CFS-828SMK2
•
UNLEADED SOLDER
Boards requiring use of unleaded solder are printed with the lead-
free mark (LF) indicating the solder contains no lead.
(Caution: Some printed circuit boards may not come printed with
the lead free mark due to their particular size.)
free mark (LF) indicating the solder contains no lead.
(Caution: Some printed circuit boards may not come printed with
the lead free mark due to their particular size.)
: LEAD FREE MARK
Unleaded solder has the following characteristics.
• Unleaded solder melts at a temperature about 40°C higher than
• Unleaded solder melts at a temperature about 40°C higher than
ordinary solder.
Ordinary soldering irons can be used but the iron tip has to be
applied to the solder joint for a slightly longer time.
Soldering irons using a temperature regulator should be set to
about 350°C.
Caution: The printed pattern (copper foil) may peel away if
the heated tip is applied for too long, so be careful!
Ordinary soldering irons can be used but the iron tip has to be
applied to the solder joint for a slightly longer time.
Soldering irons using a temperature regulator should be set to
about 350°C.
Caution: The printed pattern (copper foil) may peel away if
the heated tip is applied for too long, so be careful!
• Strong viscosity
Unleaded solder is more viscous (sticky, less prone to flow)
than ordinary solder so use caution not to let solder bridges
occur such as on IC pins, etc.
than ordinary solder so use caution not to let solder bridges
occur such as on IC pins, etc.
• Usable with ordinary solder
It is best to use only unleaded solder but unleaded solder may
also be added to ordinary solder.
also be added to ordinary solder.
3
CFS-828SMK2
SECTION 1
GENERAL
This section is extracted
from instruction manual.
from instruction manual.
Location of controls
VOLUME
MIC
OPR/BATT
FUNCTION
FINE TUNING
TUNING
BAND
Deck A
Deck B
PHONES
ISS (rear)
SOUND SELECT
MAXI BASS
DC IN 12V
(rear)
(rear)
VOLTAGE
SELECTOR
(rear)
SELECTOR
(rear)
4
CFS-828SMK2
• The equipment can be removed using the following procedure.
SECTION 2
DISASSEMBLY
Note : Follow the disassembly procedure in the numerical order given.
2-1. CABINET (FRONT) ASSY, CABINET (REAR) ASSY
2-1. CABINET (FRONT) ASSY,
CABINET (REAR) ASSY
(Page 4)
(Page 4)
2-2. POWER AND
DC IN BOARDS
(Page 5)
(Page 5)
SET
2-6. JOG AND LED1
BOARDS
(Page 7)
(Page 7)
2-4. H/P, LED2, MAXI BASS,
VOL AND MAIN BOARDS
(Page 6)
(Page 6)
2-5. F/T AND TUNER BOARDS
(Page 6)
2-3. MECHANISM DECK
(Page 5)
2-7. REC SW BOARD, BELT AND
MOTOR ASSY (W) (M301)
(Page 7)
(Page 7)
qs
cabinet (rear) assy
qa
cabinet (front) assy
0
CNP311
8
CNP314
9
CNP319
6
CNP1
7
CNP318
1
battery case lid
5
2
three screws
(+BVTP 3
x 16)
4
three screws
(+BVTP 3
x 16)
3
screw
(+BVTP 3
x 16)