SONY CFM D1JMK2, CFM D1MK2 Service Manual
CFM-D1JMK2/D1MK2
SERVICE MANUAL
Ver 1.0 2002.10
SPECIFICATIONS
Frequency range
FM: Saudi Arabia : 87.5 - 107 MHz
Tourist model: 87.5 - 107 MHz
Other models: 87.5 - 108 MHz
MW: 530 - 1 605 kHz
SW1: 2.3 - 7 MHz
SW2: 7 - 22 MHz
Aerials
FM/SW: Telescopic aerial
MW: Built-in ferrite bar aerial
Recording system
2-track 1 channel mono
Frequency response
50 - 8000 Hz
Speaker
Full range: 7.7 cm (3 1⁄8 inches) dia., 8Ω,double cone type (2)
Outputs
Earphone jack
For 32 Ω impedance earphone
Maximum power output
2 W
E Model
CFM-D1JMK2/D1MK2
Tourist Model
CFM-D1JMK2
Model Name Using Similar Machanism NEW
Tape Transport Mechanism Type MF-D1
Power requirements
110 - 127, 220 - 240 V AC selectable, 50/60 Hz
6 V DC, 4 R20 (size D) batteries
Power consumption
AC 6 W
Battery life
FM recording: Sony R20P: approx. 20 h
Sony alkaline LR20: approx. 48 h
Tape playback: Sony R20P: approx. 18 h
Sony alkaline LR20: approx. 30 h
Dimensions
Approx. 330 x 147 x 120 mm (w/h/d)
(13 x 5 7⁄8 x 4 3⁄4 inches) (incl. projecting parts)
Mass (incl. batteries)
Approx. 2.2 kg (4 lb 14 oz)
Supplied accessory
Mains lead (1)
Design and specifications are subject to change without notice.
9-874-208-01
2002J0200-1
© 2002.10
RADIO CASSETTE-CORDER
Sony Corporation
Personal Audio Company
Published by Sony Engineering Corporation
CFM-D1JMK2/D1MK2
TABLE OF CONTENTS
Section Title Page
Specifications ................................................................................. 1
1 GENERAL
Location and Function of Controls ......................................... 3
2. DISASSEMDLY .................................................................... 4
3. ADJUSTMENTS
3-1. Mechanical Adjustments ................................................. 8
3-2. Electrical Adjustments ..................................................... 8
4. DIAGRAMS
4-1. Block Diagram ............................................................... 11
4-2. Schematic Diagram (1/2) ............................................... 12
4-3. Schematic Diagram (2/2) ............................................... 13
4-4. Printed Wiring Boards ................................................... 14
5. EXPLODED VIEWS
5-1. Front Cabinet Section .................................................... 16
5-2. Rear Cabinet Section ..................................................... 17
5-3. Mechanism Deck Section (1) ........................................ 18
5-4. Mechanism Deck Section (2) ........................................ 19
6. ELECTRICAL PARTS LIST ............................................. 20
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
LOCATION AND FUNCTION OF CONTROLS
CFM-D1JMK2/D1MK2
SECTION 1
GENERAL
1
1 TAPE OPERATION BUTTONS
X PAUSE
x Z STOP/EJECT
m FF (CUE)
M REW (REVIEW)
n PLAY
z REC
2 EARPHONE v
3 VOLUME knob
23
4
5
6
7
8
9
0
4 TONE knob
5 OPR/BATT indicator
6 FUNCTION SELECTOR (RADIO/TAPE (RADIO OFF))
7 BAND SELECTOR (FM/SW1/SW2/MW)
8 TUNING knob
9 FINE TUNING knob
0 MIC
3
CFM-D1JMK2/D1MK2
4
Note: Disassemble the unit in the order as shown below.
SECTION 2
DISASSEMBLY
Record/playback head (HRP101),
Belt, Reel/capstan motor (M101)
Set
Cabinet (front) assy
2-1. CABINET (FRONT ) ASSY
3
Push the STOP/EJECT button
E.C.M board, MD assy (MF-D1)
EARPHONE board,
MAIN board
2
Screws +BVTP3X14
Lid , Battery case
POWER board
Cabinet (front) assy
6
4
5
Connector (CN104)
1
Screws +BVTP3X1
2
Cabinet (rear) assy
4
2-2. E.C.M BOARD, MD ASSY(MF-D1)
y
)
8
MD assy (MF-D1)
5
Connector (CN102)
6
Connector (CN101)
CFM-D1JMK2/D1MK2
Cabinet (rear) ass
7
Two screws (+BVTP 3X10)
4
3
Two screws (+BVTP 3X10)
2
E.C.M board
1
Two claws
Chassis (tuning)
2-3. RECORD/PLAYBACK HEAD (HRP101), BELT, REEL/CAPSTAN MOTOR (M101)
9
Reel/capstan motor (M101
2
Rug (B3)
1
Screw (M2X3, +Bind)
4
Record/playback head (HRP101)
Spring
8
Motor coller screw
3
Screw (M2X7, +AZIMUTH)
7
Belt
6
Bracket, motor
5
Screw, MB
5
CFM-D1JMK2/D1MK2
)
y
2-4. EARPHONE BOARD, MAIN BOARD
6
EARPHONE board
5
Screw (+BVTP 3X10)
qa
Tw o knobs (FUNCTION/BAND)
8
Three screws (+BVTP 3X10)
0
3
Tw o knobs (VOLUME/TONE)
Cabinet (rear) assy
1
Knob (TUNING
2-5. POWER BOARD
7
Connector (CN105)
2
Shield plate
qs
MAIN board
9
Screw (+BVTP 3X10)
4
Gear, tuning
2
Knob (FINE TUNING)
Cabinet (rear) ass
3
POWER board
1
Three screws (+BVTP 3X10)
6
CFM-D1JMK2/D1MK2
r
0
2-6. DIAL POINTER SETTING
Tuning capacitor gear
Fig-1
B
2
Tuning gear
A
Tuning gear
3
Knob(Tuning) assy
1
Tuning capacitor gea
1. Turn the Tuning Capacitor Gear all the way in
the direction of the arrow until it is positioned
at the detent
2. Turn the Tuning Gear until its position
fits into the detent
B
( ) position Fig-1.
B
( ) of the Tuning
A
( )
Capacitor Gear.
5
Screw +BVTP3X10
Tuning chassis
Pointer
rack
Fig-2
Scribe lines
4
Pointer rack
Tuning chassis
Fig-3
5
Screw +BVTP3X1
Tuning chassis
C
3. Line up the Pointer Rack with the scribe line
as shown in Fig-2.
4. Install so that the Tuning Chassis intermeshes
C
with the Pointer Rack as shown in
of Fig-3.
5. Fasten the Tuning Chassis to the cabinet (Rear)
with the screw.
7
CFM-D1JMK2/D1MK2
ADJUSTMENTS
3-1. MECHANICAL ADJUSTMENTS AND MEASUREMENTS
PRECAUTION
1. Clean the following parts with a denatured-alcoholmoistened swab :
record/playback head pinch roller
erase head rubber belts
capstan idlers
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 the 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.
SECTION 3
3-2. ELECTRICAL ADJUSTMENTS
CASSETE SECTION
Note : The adjustment should be performed in the order given in
r
Switches and controls should be set as follows unless
otherwise specified.
Standard Output Level
load impedance 4Ω 32Ω
output level 0.775V (0dB) 0.25V (–10dB)
this service manual.
FUNCTION : TAPE (RADIO OFF)
VOLUME :
TONE :
max
mechanical mid.
SP OUT EARPHONE
0 dB=0.775V
Tor que Measurement
Tor que Torque Meter Meter Reading
Playback CQ-102C (30-70g
Rewind CQ-201B (90-150g
Fast Forward CQ-201B (90-150g
Back Tention CQ-102C (1.5-5.5g
Tape Tension Measurement
Tor que Meter Meter Reading
CQ-403A more than 170g (5.99 oz)
2.95 – 6.86mN• m
(0.417-0.97oz• inch)
8.83 – 14.7mN• m
(1.24-2.08oz• inch)
8.83 – 14.7mN• m
(1.24-2.08oz• inch)
0.148 – 0.539mN •m
(0.02-0.76oz• inch)
• cm)
• cm)
• cm)
• cm)
Test Tape
Type Signal Used for
WS-48A 3kHz, 0dB Tape Speed Adjustment
P-4-A063 6.3kHz, – 10dB Azimuth Adjustment
Tape Speed Adjustment
Procedure :
Mode : playback
test tape
WS-48A
(3kHz, 0dB)
set
Earphone jack
digital frequency
counter
32
Ω
-
+
Adjustment Value :
Digital frequency counter
2,940 – 3,090 Hz
Frequency difference between the beginning and the end of
the tape should be within 1.5% (45Hz).
8
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