Sony SRF-M37 Service Manual ▷ View online
SRF-M37
E Model
SERVICE MANUAL
FM STEREO/AM PLL SYNTHESIZED RADIO
SPECIFICATIONS
Ver 1.0 2003. 03
Sony Corporation
Personal Audio Company
Published by Sony Engineering Corporation
9-877-168-01
2003C167800-1
© 2003.03
Time display:
24-hour system
Frequency range
Band
SRF-M37
Channel step
FM
87.5-108 MHz
0.1 MHz
AM
530-1
710 kHz
10 kHz
531-1
710 kHz
9 kHz
Output
i
jack (ø 3.5 mm, stereo minijack) load impedance 24
Ω (North
American model), 16
Ω (Other models)
Power output
2.8 mW + 2.8 mW (at 10 % harmonic distortion)
Power requirements
1.5 V DC, one R03 (size AAA) battery
Dimensions
Approx. 83
× 63 × 32 mm (w/h/d)
(3
3
/
8
× 2
1
/
2
× 1
5
/
16
inches) incl. projecting parts and controls
Approx. 83
× 63 × 25 mm (w/h/d)
(3
3
/
8
× 2
1
/
2
× 1 inches) not incl. projecting parts and controls
Mass
Approx. 94 g (3.32 oz.) incl. battery and belt clip.
Accessories Supplied
Stereo headphones (1): North American model
Stereo earphones (1): Other models
Belt Clip (1)
Stereo earphones (1): Other models
Belt Clip (1)
Design and specifications are subject to change without notice.
Battery Life
(Approx. hours)
(JEITA*)
When using
FM
AM
MW/LW
Sony alkaline
35
52
52
LR 03 (size AAA)
Sony R03 (size AAA)
Sony R03 (size AAA)
14
21
21
* Measured by JEITA (Japan Electronics and Information Technology
Industries Association) standards. The actual battery life may vary
depending on the circumstance of the unit.
depending on the circumstance of the unit.
2
SRF-M37
Notes on chip component replacement
• Never reuse a disconnected chip component.
• Notice that the minus side of a tantalum capacitor may be
• Notice that the minus side of a tantalum capacitor may be
damaged by heat.
Flexible Circuit Board Repairing
• Keep the temperature of soldering iron around 270˚C
during repairing.
• Do not touch the soldering iron on the same conductor of the
circuit board (within 3 times).
• Be careful not to apply force on the conductor when soldering
or unsoldering.
SECTION 1
GENERAL
This section is extracted
from instruction manual.
from instruction manual.
VOL
POWER
Belt clip / Attache /
Gürtelbefestigung
Gürtelbefestigung
HOLD
CLOCK
TUNE/TIME SET
PRESET TUNING 1-6
BAND
FM SENS
DX
LOCAL
DX
LOCAL
i
jack /
Prise i /
Buchse i
Buchse i
*
1
Setting the Clock
The display will flash “AM 12:00” or “0:00” when the battery is first
inserted.
inserted.
1
Hold down CLOCK for more than 2 seconds.
The beep sounds and the hour flashes in the display.
2
Press TUNE/TIME SET + or – until the correct hour appears in
the display.
the display.
Each press changes the digit(s) by one.
When you keep the button pressed, the digit(s) change rapidly.
When you keep the button pressed, the digit(s) change rapidly.
3
Press CLOCK.
The beep sounds and the minute starts to flash.
Repeat step 2 to set the minute. After setting the
minute, press CLOCK again. The two beeps sound
and the clock starts from 0 seconds.
Repeat step 2 to set the minute. After setting the
minute, press CLOCK again. The two beeps sound
and the clock starts from 0 seconds.
The clock system varies depending on the model you own.
12-hour system: “AM 12:00” = midnight
24-hour system: “0:00” = midnight
12-hour system: “AM 12:00” = midnight
24-hour system: “0:00” = midnight
3
SRF-M37
SECTION 2
DISASSEMBLY
Note :
Follow the disassembly procedure in the numerical order given.
2-1.
Cabinet (Front) Assy
CABINET (FRONT) ASSY
KEY BOARD ASSY
MAIN BOARD ASSY
SET
• This set can be disassembled in the order shown below.
2
four tapping screws
(B 1.7
×
6)
3
cabinet (front) assy
1
Open the battery case lid.
4
SRF-M37
2-3.
MAIN Board Assy
2-2.
KEY Board Assy
5
battery terminal (+)
4
battery terminal (-)
6
KEY board assy
3
two hooks
1
Remove the soldering from two points.
2
Remove the soldering
from the eleven points.
4
MAIN board assy
2
Remove the soldering
from the eleven points.
1
two tapping screws
(B 1.7
×
6)
3
two wire
