SRF-M73 — Sony Audio Service Manual (repair manual)

Model
SRF-M73
Pages
15
Size
1.68 MB
Type
PDF
Document
Service Manual
Brand
Device
Audio
File
srf-m73.pdf
Date

View Sony SRF-M73 Service Manual online

SERVICE MANUAL
FM STEREO/AM PLL SYNTHESIZED RADIO
US Model
Panama Model
SPECIFICATIONS
SRF-M73
9-926-979-12
Sony Corporation
2003I05-1
Personal Audio Company
C
 2003.09
Published by Sony Engineering Corporation
Ver 1.1  2003.09
– 2 –
TABLE  OF  CONTENTS
1.
SERVICING  NOTES
...............................................
2
2.
GENERAL
...................................................................
3
3.
DISASSEMBLY
.........................................................
4
4.
ELECTRICAL  ADJUSTMENTS
.........................
6
5.
DIAGRAMS
5-1. Block Diagram ................................................................
8
5-2. Printed Wiring Boards ..................................................... 10
5-3. Schematic Diagram ......................................................... 13
5-4. IC Pin Function Description ........................................... 18
6.
EXPLODED  VIEWS
................................................ 19
7.
ELECTRICAL  PARTS  LIST
............................... 20
Forced Reset
The system microprocessor can be reset in the following proce-
dure.
Use these procedure when the unit cannot be worked normally
due to the overrunning of the microprocessor, etc.
Procedure:
1. Set to radio OFF.
2. While pressing the 
[SCAN]
 button, press two buttons of 
[START/
STOP]
 and 
[BAND]
 simultaneously for 5 seconds.
3. The unit is reset, and display blinking “
AM
 12:00
”.
SECTION  1
SERVICING  NOTES
– 3 –
SECTION  2
GENERAL
This section is extracted from
instruction manual.
– 4 –
CABINET (FRONT)/(REAR)  ASSY
KEY  BOARD
·
 This set can be disassembled in the order shown below.
SECTION  3
DISASSEMBLY
Set
Key Board
Main Board
Knob (A)
Cabinet (Rear) Assy
Cabinet (Front) Assy
2
three screws
(B1.7 
×
 8)
2
two screws
(B1.7 
×
 8)
1
Remove the battery case lid 
of the arrow.
3
cabinet (front) assy
4
cabinet (rear) assy
1
three claws
2
Open the key board 
to direction of the arrow.
1
four claws
Note: 
Follow the disassembly procedure in the numerical order given.
Page of 15
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Download Sony SRF-M73 Service Manual (Repair Manual)

Here you can view online or download Sony SRF-M73 Service Manual in pdf. This Service Manual can help you recover, restore, fix, disassemble and repair Sony SRF-M73 Audio. Information contained in Sony SRF-M73 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).