Sony CFM-S1 Service Manual ▷ View online
3
CFM-S1
1
2
Screws
+ BVTP 3X10
+ BVTP 3X10
Chassis(B)
MD ASSY
pointer
Cabi, rear
SECTION 2
DISASSEMBLY
Note : Follow the disassembly procedure in the numerical order given.
2-1. CABINET (FRONT) ASSY, “CABI, REAR”
2-2. MD ASSY
• The equipment can be removed using the following procedure.
Set
Cabinet (front) ASSY
Cabi, rear
Jack board, Main board,
Fine tune board
Fine tune board
Battery terminal board, Power board
MD ASSY
Record/playback head (HRP101),
Reel/capstan motor (M101), Belt
Reel/capstan motor (M101), Belt
3
1
4
Remove solder (two places)
2
Screws + BVTP 3X14
2
Screws + BVTP 3X14
Lid, BATT
Cabinet(front) ASSY
Cabi, rear
2-3. RECORD/PLAYBACK HEAD (HRP101),
REEL/CAPSTAN MOTOR (M101), BELT
REEL/CAPSTAN MOTOR (M101), BELT
1Screws Tapping+B
MD ASSY
4Record/playback
head (HRP101)
7
Reel/capstan
motor (M101)
motor (M101)
3Screws
+ PTT 2X 5
6Screws + P2X 5
8Belt
5Lug (T), plate
2Guide, tape
4
CFM-S1
2-4. JACK BOARD, MAIN BOARD, FINE TUNE BOARD
2-5. BATTERY TERMINAL BOARD, POWER BOARD
8
6
3
3
3
Chassis(A)
Main board
7
Screws + BVTP 3X10
2
Screw +BVTP 3X10
5
Claw
Cabi, rear
Fine tune board
1
Knob(FT)
1
Knob(band)
1
Knob(function)
1
Knob(vol)
1
Knob(sound)
4
Screw +BVTP 3X10
Jack board
1
Knob(tune)
Bracket(PWB)
6
2
4
Remove Solder
Cabi, rear
Power board
3
Remove solder
Battery terminal board
5
Screws + BVTP 3X10
1
Claw
5
CFM-S1
2-6. NOTE ON INSTALATION
To jack board
Power board (CN901)
Fine tune board (KH2)
Main board (KH1)
Main board (KH101)
Main board (KH102)
To battery terminal board
To speaker
(SP1)
(SP1)
MIC (ECM101)
Power board (KH901)
2-7. DIAL POINTER SETTING
Dress the lead wires as shown in figure.
1 Turn the knob(tune)
fully counterclockwise.
2 Fit the pointer to the
chassis(B).
5 Set the left side of the
pointer to the convex
portion (a) on the
chassis(B).
portion (a) on the
chassis(B).
Pointer
Chassis(A)
Chassis(B)
Chassis(B)
6
6
3
6
Hold the left side of pointer,
then insert the gear section
of pointer to groove of chassis(A).
of pointer to groove of chassis(A).
7Bracket(P)
4 Screw + BVTP 3X14
Pointer
Chassis(B)
Pointer
(a)
6
CFM-S1
TAPE RECORDER SECTION
FUNOTION switch
: TAPE (RADIO OFF)
SOUND switch
: OFF
VOLUME
: MIN
Standard Output Level
Output terminal
Earphone
Speaker
load impedance
8
Ω
6
Ω
output signal level
0.25V (–10dB)
0.775V (0dB)
Test Tape
Type
Signal
Used for
WS-48A
3kHz, 0dB
Tape Speed Adjustment
Record/Playback Head Azimuth Adjustment
Procedure :
1.Playback Mode
Procedure :
1.Playback Mode
2.Rotate the screw to adjust level meter reading to the maximum.
Note :
Note :
Adjust to the maximum peak though there may be two or
three peakes
three peakes
3.After the adjustment, lock the adjustment screws with suitable
locking compound.
Adjustment Location :
SECTION 3
TEST MODE
3-1. MECHANICAL ADJUSTMENTS
PRECAUTION
1.Clean the following parts with a denatured-alcohol-moistened
swab :
record/playback head
pinch roller
erase head
rubber belts
capstan
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
4.After the adjustments, apply suitable locking compound to the
parts adjusted.
5. The adjustments should be performed with the rated power sup
ply voltage unless otherwise noted.
Torque Measurement
Forward
CQ-102C
Forward
CQ-102C
Back Tension
Fast Forward
CQ-201B
Rewind
CQ-201B
Tape Tension Measurement
Torque Meter
Meter Reading
Torque
Torque Meter
Meter Reading
1.77 to 5.88 mN•m
(18 to 60 g•cm)
(0.25 to 0.83 oz•inch)
0.01 to 0.49 mN•m
(1 to 5 g•cm)
(0.014 to 0.069 oz•inch)
4.42 to 9.31 mN•m
(45 to 95 g•cm)
(0.63 to 1.31 oz•inch)
4.42 to 9.31 mN•m
(45 to 95 g•cm)
(0.63 to 1.31 oz•inch)
3-2. ELECTRICAL ADJUSTMENTS
CQ-403A
more than 100g
(more than 3.53 oz)
(more than 3.53 oz)
0dB=0.775V
Head azimuth adjustent screw
set
test tape
P-4-A100
(10kHz, -10dB)
P-4-A100
(10kHz, -10dB)
8
Ω
level meter
J101 (Earphone jack)
+