SRF-M85 — Sony Audio Service Manual (repair manual)

Model
SRF-M85
Pages
16
Size
695.35 KB
Type
PDF
Document
Service Manual
Brand
Device
Audio
File
srf-m85.pdf
Date

View Sony SRF-M85 Service Manual online

SERVICE MANUAL
FM STEREO/AM PLL SYNTHESIZED RADIO
Australian Model
SPECIFICATIONS
SRF-M85
Battery Life 
(Approx. hours)
(JEITA*)
When using
FM
AM
Sony alkaline LR03 (size AAA)
27
36
Sony R03 (size AAA)
10
16
* Measured by JEITA (Japan Electronics and Information Technology Industries
Association) standards. The actual battery life may vary depending on the
circumstance of the unit.
Time display
12-hour system
Frequency range
Model for North and South America
Band
Range
Channel step
FM
87.5 
− 108 MHz
0.1 MHz
AM
530 
− 1 710 kHz
10 kHz
Model for other countries / regions
Band
Range
Channel step
FM
87.5 
− 108 MHz
0.1 MHz
AM
531 
− 1 710 kHz
9 kHz
Output
i
i
i
i
i (headphones/earphones) jack (
φ 3.5 mm stereo mini jack) 16 Ω
Power output
5 mW + 5 mW (at 10 % harmonic distortion)
Power requirements
1.5 V DC, one R03 (Size AAA) battery
Dimensions
Approx. 95.5 
× 69.3 × 37.5 mm (w/h/d)
(3
7
/
8
× 2 
3
/
4
× 1 
1
/
2
 inches) incl. projecting parts and controls
Mass
Approx. 88.3 g (3.1 oz.) incl. battery
Supplied accessories
Stereo earphones (1)
Arm band (1)
Design and specifications are subject to change without notice.
Ver. 1.0  2005.02
9-879-415-01
2005B05-1
© 2005.02
Sony Corporation
Personal Audio Company
Published by Sony Engineering Corporation
2
SRF-M85
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.
UNLEADED  SOLDER
Boards requiring use of unleaded solder are printed with the lead-
free mark (LF) indicating the solder contains no lead.
(Caution: Some printed circuit boards may not come printed with
the lead free mark due to their particular size)
: LEAD  FREE  MARK
Unleaded solder has the following characteristics.
• Unleaded solder melts at a temperature about 40 °C higher
than ordinary solder.
Ordinary soldering irons can be used but the iron tip has to be
applied to the solder joint for a slightly longer time.
Soldering irons using a temperature regulator should be set to
about 350 
°C.
Caution: The printed pattern (copper foil) may peel away if
the heated tip is applied for too long, so be careful!
• Strong viscosity
Unleaded solder is more viscou-s (sticky, less prone to flow)
than ordinary solder so use caution not to let solder bridges
occur such as on IC pins, etc.
• Usable with ordinary solder
It is best to use only unleaded solder but unleaded solder may
also be added to ordinary solder.
3
SRF-M85
SECTION  1
GENERAL
This section is extracted from
instruction manual.
RADIO ON
MB
STPW PITCH
SPLIT TIMER
FM
AM
PM
HOLD lever
BAND
SPLIT/RESET
START/STOP
POWER
ENTER
FM SENS
DX/LOCAL
Belt clip
DISPLAY
TUNE/TIME SET +/
−*
1
VOL*
2
MODE
MEGA BASS
i (headphones/
earphones) jack
*
2
 There is a tactile dot beside VOL to show the direction to turn up
the volume.
*
1
The TUNE/TIME SET + has a tactile dot.
Features
¥ FM/AM 2 band PLL (phase locked loop) synthesized armband radio.
¥ A total of 20 stations can be preset, 15 FM stations and 5 AM stations.
¥ 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.
Setting the Clock
The display will flash  AM 12:00  when the battery is first inserted.
1
Press DISPLAY repeatedly to select the clock mode when the
clock mode is not on.
2
Hold down ENTER for more than 2 seconds.
The beep sounds and the hour flashes in the display.
3
Press TUNE/TIME SET + or – 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.
4
Press ENTER.
The beep sounds and the minute starts to 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.
Notes
¥ One you start setting the clock, you must perform each step within 65 seconds,
or the clock setting mode will be canceled.
¥ 12-hour system:  AM 12:00  = midnight,  PM 12:00  = noon.
SRF-M85
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
5
three screws
(1.7 
×
 8)
4
clip assy
3
two screws
(1.7 
×
 6)
2
two screws
(1.7 
×
 6)
2
1
3
5
4
1
S311
lever
Note: When installing the cabinet (front) assy, 
install five screws in order of figure.
Note: When installing the cabinet (front) assy, adjust S311 and lever.
1
2
3
: 0.09 
±
 0.01 N
m
4
5
: 0.08 
±
 0.01 N
m
6
cabinet (front) assy
SET
2-2. Cabinet (Front) Assy
(Page 4)
2-3. Board Assy
(Page 5)
2-4. Spreading of Adhesive Agent
(Page 5)
Page of 16
Display

Download Sony SRF-M85 Service Manual (Repair Manual)

Here you can view online or download Sony SRF-M85 Service Manual in pdf. This Service Manual can help you recover, restore, fix, disassemble and repair Sony SRF-M85 Audio. Information contained in Sony SRF-M85 service manual (repair manual) typically includes:

  • Disassembly, troubleshooting, programming, maintenance, remote, adjustment, installation and setup instructions.
  • Schematics, wiring and block diagrams.
  • Printed wiring boards (PWB) and printed circuit boards (PCB).
  • Parts list (bill of materials).