Read Sony SRF-M807 Service Manual online
SERVICE MANUAL
FM STEREO/AM PLL SYNTHESIZED RADIO
E Model
Australian Model
SPECIFICATIONS
SRF-M807
Ver. 1.0 2005.02
9-879-471-01
2005B05-1
© 2005.02
© 2005.02
Sony Corporation
Personal Audio Company
Published by Sony Engineering Corporation
Published by Sony Engineering Corporation
Time display:
North and South America: 12-hour system
Other countries: 24-hour system
Other countries: 24-hour system
Frequency range:
Model for North and South America
Band
Frequency range
Channel step
FM
87.5 - 108 MHz
0.1 MHz
AM
530-1 710 kHz
10 kHz
531-1 710 kHz
9 kHz
Model for Other countries/regions
Band
Frequency range
Channel step
FM
87.5 - 108 MHz
0.05 MHz
AM
531-1 602 kHz
9 kHz
530-1 610 kHz
10 kHz
Speaker:
Approx. 3.6 cm dia., 7.2
Ω
Power output:
60mW (at 10% harmonic distortion)
Output:
i (headphones) jack (
φ3.5 mm, stereo
minijack)
Power requirements:
3 V DC, two R03 (size AAA) batteries
Dimensions:
Approx. 57
× 98.8 × 21.2 mm
(w/h/d) (Approx. 2
1
/
4
× 4 ×
27
/
32
inches)
not incl. projecting parts and controls
Mass:
Approx. 103 g (3.6 oz ) incl. batteries and the
headphones.
Accessories supplied:
Stereo headphones (1)
Design and specifications are subject to change
without notice.
without notice.
Battery life
(approx. hours)
(JEITA*)
When using
FM
AM
Sony alkaline
Using Speakers
21
28
LR03 (size AAA) Using Headphones
34
55
Sony R03
Using Speakers
8
10.5
(size AAA)
Using Headphones
13
23
* Measured by JEITA (Japan Electronics and
Information Technology Industries
Association) standards. The actual battery life may
vary depending on the circumstance of the unit.
Association) standards. The actual battery life may
vary depending on the circumstance of the unit.
Notes on chip component replacement
• Never reuse a disconnected chip component.
• Notice that the minus side of a tantalum capacitor may be
damaged by heat.
2
SRF-M807
SECTION 1
GENERAL
This section is extracted from
instruction manual.
instruction manual.
i
i
/
5
VOL
POWER
ON
OFF
MEGABASS
DX
LOCAL
FM SENS
HOLD
ENTER
TIME SET
SCAN TUNE
CLOCK
PRESET
BAND
Speaker
Haut-parleur
Lautsprecher
Haut-parleur
Lautsprecher
The
PRESET +
button has a tactile dot.
There is a tactile dot beside
VOL
and
SCAN TUNE/
TIME SET +
to show the direction to increase
volume/scan forward/advance clock.
Features
• Quartz-controlled PLL (Phase Locked Loop)
synthesizer system using a microcomputer for easy
pinpoint tuning.
pinpoint tuning.
• Up to 15 stations in FM and 10 stations in AM can
be preset.
• You can tune in to the stations easier by Auto-Scan
tuning which automatically receives the stations.
• Powerful Bass sound provided by MEGABASS
circuit.
Setting the Clock
The display will flash “0:00” or “AM 12:00” when the
batteries are first installed.
Set the clock when the radio is turned off.
batteries are first installed.
Set the clock when the radio is turned off.
1
Press POWER to turn off the power.
2
Hold down ENTER/CLOCK for more
than 2 seconds.
than 2 seconds.
The hour flashes in the display.
3
Press SCAN TUNE/TIME SET + or –
until the correct hour appears in the display.
until the correct hour appears in the display.
When you hold down
SCAN TUNE/TIME SET
+
or
–
, the digit(s) change rapidly.
4
Press ENTER/CLOCK.
The minute starts to flash.
5
Repeat steps 3 and 4 to set the minutes.
6
After setting the minutes, the clock starts
operating, and “ : ” starts flashing.
operating, and “ : ” starts flashing.
Notes
• The clock system varies depending on the model
you own.
12-hour system: “AM 12:00”
12-hour system: “AM 12:00”
= midnight
24-hour system: “0:00”
= midnight
• To set the current time exactly, after setting the
minutes and press
ENTER/CLOCK
with the time
signal (such as a radio station).
• Once you start setting the clock, you must perform
each step within 65 seconds, or the clock setting
mode will be cancelled.
mode will be cancelled.
• To cancel the clock setting mode, press
POWER
to turn on the power, and press
POWER
again to
turn off. The clock setting mode will be cancelled.
TABLE OF CONTENTS
1.
GENERAL
...................................................................
2
2.
DISASSEMBLY
.........................................................
3
3.
ELECTRICAL ADJUSTMENTS
.........................
5
4.
DIAGRAMS
6-1.
Printed Wiring Boards .....................................................
8
6-2.
Schematic Diagram .........................................................
9
7.
EXPLODED VIEWS
................................................ 11
8.
ELECTRICAL PARTS LIST
................................ 12
SRF-M807
3
Note:
Follow the disassembly procedure in the numerical order given.
2-2. CABINET (FRONT) ASSY
• This set can be disassembled in the order shown below.
2-1. DISASSEMBLY FLOW
SECTION 2
DISASSEMBLY
qa
cabinet (front) assy
6
three screws
5
three screws
0
Remove two solders.
speaker (SP1)
3
two screws
7
4
three screws
9
flexible flat cable (CN2)
8
flexible flat cable (CN1)
1
Open the battery case lid.
2
screw (B1.4)
SET
2-2. Cabinet (Front) Assy
(Page 3)
2-3. Micro Computer Board
(Page 4)
2-4. Main Board
(Page 4)
SRF-M807
4
2-3. MICRO COMPUTER BOARD
2-4. MAIN BOARD
3
two screws (B1.4)
4
holder (jack)
7
MAIN board
5
screw (B1.4)
2
knob (SP/EP)
9
claw
1
three knobs (A)
2
two claws
3
MICRO COMPUTER board
1
three screws (B1.4)
