Read Sony SRF-M80 Service Manual online
SERVICE MANUAL
Time display
24-hour system
Frequency range
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
Output
i
(headphones/earphones) jack (ø 3.5
mm, stereo minijack) 16 Ω
Power output
15 mW + 15 mW (at 10 % harmonic
distortion)
distortion)
Power requirements
3 V DC, two R03 (size AAA) batteries
Dimensions
Approx. 69.2 × 45 × 113.5 mm (w/h/d)
(2
(2
3
/
4
× 1
13
/
16
× 4
1
/
2
inches) incl.
projecting parts and controls
Mass
Approx. 104.2 g (3.68 oz.) incl. batteries
Supplied accessories
Stereo earphones (1)
Arm band (1)
Arm band (1)
Design and specifications are subject to
change without notice.
change without notice.
FM STEREO/AM PLL SYNTHESIZED RADIO
AEP Model
SPECIFICATIONS
SRF-M80
Ver 1.0 2002.04
9-873-678-01
Sony Corporation
2002D0500-1
Personal Audio Company
C
2002.04
Published by Sony Engineering Corporation
2
SRF-M80
TABLE OF CONTENTS
1.
GENERAL
..................................................................
3
2.
DISASSEMBLY
2-1. Disassembly Flow ...........................................................
4
2-2. Cabinet (Front) Assy .......................................................
4
2-3. MAIN Board ...................................................................
5
3.
ELECTRICAL ADJUSTMENTS
........................
6
4.
DIAGRAMS
4-1. Block Diagram ...............................................................
8
4-2. Note for Printed Wiring Board and
Schematic Diagrams .......................................................
9
4-3. IC Pin Function Description ..........................................
9
4-4. Printed Wiring Board – MAIN Board – ....................... 10
4-5. Printed Wiring Board – KEY Board – .......................... 11
4-6. Schematic Diagram – MAIN/KEY Boards – ............... 12
4-5. Printed Wiring Board – KEY Board – .......................... 11
4-6. Schematic Diagram – MAIN/KEY Boards – ............... 12
5.
EXPLODED VIEW
.................................................. 14
6.
ELECTRICAL PARTS LIST
.............................. 15
Notes on chip component replacement
• Never reuse a disconnected chip component.
• Notice that the minus side of a tantalum capacitor may be dam-
• Notice that the minus side of a tantalum capacitor may be dam-
aged by heat.
3
SRF-M80
SECTION 1
GENERAL
This section is extracted from
instruction manual.
instruction manual.
HOLD lever
Levier HOLD
Palanca
HOLD
Levier HOLD
Palanca
HOLD
BAND
SPLIT/RESET
START/STOP
POWER
ENTER
FM SENS DX/LOCAL
Belt clip
Attache
Pinza de la correa
Attache
Pinza de la correa
PRESET TUNING 1 – 6*
2
TUNE/TIME
SET +/–*
SET +/–*
2
VOL*
3
MODE
MEGA BASS
i
(headphones/earphones)
jack
Prise i (casque/écouteurs)
Toma i (auriculares/
audífonos)
Prise i (casque/écouteurs)
Toma i (auriculares/
audífonos)
*
3
There is a tactile dot beside
volume to show the direction
to turn up the volume.
volume to show the direction
to turn up the volume.
*
3
Un point tactile se trouve à
côté de la molette du volume
afin d’indiquer le sens
permettant d’augmenter ce
dernier.
côté de la molette du volume
afin d’indiquer le sens
permettant d’augmenter ce
dernier.
*
3
Al lado del botón del volumen
hay un punto táctil que
muestra el sentido en que se
debe girar para subir el
volumen.
hay un punto táctil que
muestra el sentido en que se
debe girar para subir el
volumen.
*
2
The TUNE/TIME SET + and the PRESET
TUNING 3 buttons have a tactile dot.
TUNING 3 buttons have a tactile dot.
*
2
La touche de TUNE/TIME SET + et
PRESET TUNING 3 comporte un point
tactile.
PRESET TUNING 3 comporte un point
tactile.
*
2
Las teclas TUNE/TIME SET + y PRESET
TUNING 3 tienen un punto táctil.
TUNING 3 tienen un punto táctil.
Display window*
1
Afficheur*
1
Ventana del visualizador*
1
*
1
The display differs depending on your
country.
country.
*
1
L’affichage diffère selon votre pays.
*
1
El visualizador varía en función del país.
Features
• FM/AM 2 band PLL (phase locked loop)
synthesized armband radio.
• Easy Preset Digital Tuning with 18
memory presets.
• 6 direct presets calls.
• Stopwatch, split and pitch timer functions.
• Wearable round design for armband and
• Stopwatch, split and pitch timer functions.
• Wearable round design for armband and
belt-holder use.
• Splash-resistant for all –weather use.
• MEGA BASS for dynamic bass sound.
• MEGA BASS for dynamic bass sound.
Notes on AM Channel Step
The AM channel step differs depending on
areas. See “Changing AM Channel Step”.
areas. See “Changing AM Channel Step”.
Setting the Clock
The display will flash “AM 12:00” or
“0:00” when the batteries are first
inserted.
“0:00” when the batteries are first
inserted.
1
Press MODE repeatedly to
select the clock mode when
the clock mode is not on.
select the clock mode when
the clock mode is not on.
2
Hold down ENTER for more
than 2 seconds.
than 2 seconds.
The beep sounds and the hour flashes in
the display.
the display.
3
Press TUNE/TIME SET + or
– until the correct hour
appears in the display.
– until the correct hour
appears in 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.
4
Press ENTER.
The beep sounds and the minute starts to
flash.
flash.
Repeat step 3 to set the minute. After
setting the minute, press ENTER again.
The two beeps sound and the clock starts
from 0 seconds.
setting the minute, press ENTER 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
model you own.
12-hour system: “AM 12:00” = midnight
24-hour system: “0:00” = midnight
SRF-M80
4
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
2-2. Cabinet (Front) Assy
(Page 4)
2-3. MAIN Board
(Page 5)
SET
2
five screws
(B1.7
(B1.7
×
6)
1
Open the battery case lid.
4
3
two claws
5
rubber key switch
(preset)
(preset)
6
cabinet (front) assy
adaptor (hold)
key board
S117
Note: When installing the cabinet (front) assy, adjust S117 and the adaptor (hold).
