CFS-828SMK2 - Sony Audio Service Manual (repair manual)

cfs-828smk2 service manual
Model
CFS-828SMK2
Pages
36
Size
3.46 MB
Type
PDF
Document
Service Manual
Brand
Device
Audio
File
cfs-828smk2.pdf
Date

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
IF
FM: 10.7 MHz
MW/SW: 455 kHz
Antennas
FM/SW: Telescopic
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 
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
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
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.
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
3. DIAL POINTER SETTING
............................................. 8
4. MECHANICAL ADJUSTMENTS
................................. 9
5. ELECTRICAL ADJUSTMENTS
Tape Section ............................................................................ 9
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
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
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.
Notes on Chip Component Replacement
• Never reuse a disconnected chip component.
• 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.)
 : LEAD FREE MARK
Unleaded solder has the following characteristics.
• 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!
• 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.
• Usable with ordinary solder
It is best to use only unleaded solder but unleaded solder may
also be added to ordinary solder.
3
CFS-828SMK2
SECTION 1
GENERAL
This section is extracted
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)
VOLTAGE
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)
2-2. POWER AND
DC IN BOARDS
(Page 5)
SET
2-6. JOG AND LED1
BOARDS
(Page 7)
2-4. H/P, LED2, MAXI BASS,
VOL AND MAIN BOARDS
(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)
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)
Page of 36
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Download Sony CFS-828SMK2 Service Manual (Repair Manual)

Here you can read online and download Sony CFS-828SMK2 Service Manual in PDF. CFS-828SMK2 service manual will guide through the process and help you recover, restore, fix, disassemble and repair Sony CFS-828SMK2 Audio. Information contained in service manuals typically includes schematics / circuit diagrams, wiring diagrams, block diagrams, printed wiring boards, exploded views, parts list, disassembly / assembly, pcb.