Sony CFM-20L Service Manual ▷ View online
Ver 1.1 2004.05
CFM-20L
SERVICE MANUAL
RADIO CASSETTE-CORDER
SPECIFICATIONS
AEP Model
9-873-114-12
2004E02-1
© 2004.05
Sony Corporation
Personal Audio Company
Published by Sony Engineering Corporation
Model Name Using Similar Machanism
CFM-20
Tape Transport Mechanism Type
MF-M20-117
2
CFM-20L
TABLE OF CONTENTS
Specifications ........................................................................... 1
1.
GENERAL
Location and Function of Controls .................................... 2
Location and Function of Controls .................................... 2
2.
DISASSEMBLY
2-1. Cabinet (Front) Sub ASSY, Cabinet (Rear) ASSY .... 3
2-2. MD ASSY ................................................................... 3
2-3. Record/Playback Head (HRP101),
Reel/Capstan Motor (M101),Belt ............................... 4
2-4. Jack Board, Main Board ............................................. 4
2-5. Batt (+) Board, Power Board ...................................... 5
2-1. Cabinet (Front) Sub ASSY, Cabinet (Rear) ASSY .... 3
2-2. MD ASSY ................................................................... 3
2-3. Record/Playback Head (HRP101),
Reel/Capstan Motor (M101),Belt ............................... 4
2-4. Jack Board, Main Board ............................................. 4
2-5. Batt (+) Board, Power Board ...................................... 5
3.
ADJUSTMENTS
3-1. Mechanical Adjustments ............................................. 6
3-2. Electrical Adjustments ................................................ 6
3-1. Mechanical Adjustments ............................................. 6
3-2. Electrical Adjustments ................................................ 6
4.
DIAGRAMS
4-1. Block Diagrams .......................................................... 9
4-2. Printed Wiring Boards .............................................. 10
4-3. Schematic Diagrams -Main Section (1/2) - .............. 11
4-4. Schematic Diagrams -Main Section (2/2) - ............. 12
4-1. Block Diagrams .......................................................... 9
4-2. Printed Wiring Boards .............................................. 10
4-3. Schematic Diagrams -Main Section (1/2) - .............. 11
4-4. Schematic Diagrams -Main Section (2/2) - ............. 12
5.
EXPLODED VIEWS
5-1. Front Cabinet Section ............................................... 15
5-2. Rear Cabinet Section ................................................ 16
5-3. Mechanism Deck Section-1(MF-M20-117) ............. 17
5-4. Mechanism Deck Section-2(MF-M20-117) ............. 18
5-1. Front Cabinet Section ............................................... 15
5-2. Rear Cabinet Section ................................................ 16
5-3. Mechanism Deck Section-1(MF-M20-117) ............. 17
5-4. Mechanism Deck Section-2(MF-M20-117) ............. 18
6.
ELECTRICAL PARTS LIST ........................................ 19
SECTION 1
GENERAL
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.
REPLACE THESE COMPONENTS WITH SONY PARTS WHOSE
PART NUMBERS APPEAR AS SHOWN IN THIS MANUAL OR IN
SUPPLEMENTS PUBLISHED BY SONY.
This section is extracted from
instruction manual.
instruction manual.
Location and Function of Controls
Notes on chip component replacement
• Never reuse a disconnected chip component.
• Notice than the minus side of a tantalum capactior may be
damaged by heat.
• Notice than the minus side of a tantalum capactior may be
damaged by heat.
3
CFM-20L
SECTION 2
DISASSEMBLY
Note : Follow the disassembly procedure in the numerical order given.
2-2. MD ASSY
• The equipment can be removed using the following procedure.
Set
Cabinet (front) sub ASSY
Cabinet (rear) ASSY
Jack board, Main board
Batt(+) board, Power board
MD ASSY
Record/playback head (HRP101),
Reel/capstan motor (M101), Belt
Reel/capstan motor (M101), Belt
3
1
2
Screws (+ BVTP 3X14)
2
Screws
(+ BVTP 3X14)
(+ BVTP 3X14)
4
Remove solder (two place)
5
CNP103
6
Cabinet (front) sub ASSY
Lid, BATT
Cabinet (rear) ASSY
White
White/red
3
4
CNP102
1
Screw (+ BVTP 3X10)
2
CNP101
5
MD ASSY
Bracket (VOL)
Cabinet (rear) ASSY
2-1. CABINET (FRONT) SUB ASSY, CABINET (REAR) ASSY
4
CFM-20L
2-3. RECORD/PLAYBACK HEAD (HRP101), REEL/CAPSTAN MOTOR (M101), BELT
2-4. JACK BOARD , MAIN BOARD
1
Screws Tapping+B
(+PTT 2X5(s))
(+PTT 2X5(s))
MD ASSY
4
Record/playback
head (HRP101)
8
Reel/capstan
motor (M101)
MD ASSY
M101
Belt
Flywheel ASSY
• Attaching belt
6
Spring, Compr
3
Screws
+ PTT 2X 5
+ PTT 2X 5
7
Screw + P2.6X 5
9
Belt
5
Lug (T), plate
2
Guide, tape
7
8
6
1
2
0
4
Screw
(+ BVTP 3X10)
(+ BVTP 3X10)
3
Screw
(+ BVTP 3X10)
(+ BVTP 3X10)
Jack board
9
CNP901
Main board
Cabinet (rear)
Knob (VOL)
Knob (FUN)
Chassis
Bracket (PWB)
5
Screw
(+ BVTP 3X10)
(+ BVTP 3X10)