Sony SRF-PSY04 Service Manual ▷ View online
MICROFILM
SERVICE MANUAL
FM STEREO/AM PLL
SYNTHESIZED RADIO
US Model
SPECIFICATIONS
SRF-PSY04
Photo: Blue model
Ver 1.0 1999. 06
– 2 –
TABLE OF CONTENTS
1.
GENERAL
...................................................................
3
2.
DISASSEMBLY
.........................................................
4
3.
ELECTRICAL ADJUSTMENTS
.........................
5
4.
DIAGRAMS
4-1. Block Diagram ................................................................
7
4-2. Printed Wiring Boards .....................................................
9
4-3. Schematic Diagram ......................................................... 11
4-4. IC Pin Function Description ........................................... 15
4-4. IC Pin Function Description ........................................... 15
5.
EXPLODED VIEW
................................................... 16
6.
ELECTRICAL PARTS LIST
............................... 17
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.
CF3
CF1
mark
Mark
Center frequency
red
10.70 MHz
blue
10.67 MHz
orange
10.73 MHz
black
10.64 MHz
white
10.76 MHz
HOW TO CHANGED THE CERAMIC FILTERS
This model is used two ceramic filters of CF1 and CF3.
You must use same type of color marked ceramic filters in order to
meet same specifications.
Therefore, the ceramic filter must be changed two pieces together
since it’s supply two pieces in one package as a spare parts.
You must use same type of color marked ceramic filters in order to
meet same specifications.
Therefore, the ceramic filter must be changed two pieces together
since it’s supply two pieces in one package as a spare parts.
– 3 –
SECTION 1
GENERAL
This section is extracted from
instruction manual.
instruction manual.
– 4 –
FRONT CABINET
MAIN BOARD, KEY BOARD
SECTION 2
DISASSEMBLY
Note:
Follow the disassembly procedure in the numerical order given.
4
front cabinet
3
two claws
1
lid, battery case
2
two screws
(P2
(P2
×
8)
3
two claws
1
two claws
2
KEY board
2
MAIN board