Sony ICF-J1 Service Manual ▷ View online
– 2 –
TABLE OF CONTENTS
1.
GENERAL
...................................................................
2
2.
DISASSEMBLY
.........................................................
3
3.
ASSEMBLY
.................................................................
7
4.
ELECTRICAL ADJUSTMENTS
.........................
9
5.
DIAGRAMS
5-1. Block Diagram ................................................................ 11
5-2. Printed Wiring Board ...................................................... 13
5-3. Schematic Diagram ......................................................... 15
5-2. Printed Wiring Board ...................................................... 13
5-3. Schematic Diagram ......................................................... 15
6.
EXPLODED VIEWS
................................................ 17
7.
ELECTRICAL PARTS LIST
............................... 19
SECTION 1
GENERAL
This section is extracted from
instruction manual.
instruction manual.
Insert the # side of the battery first.
Inserte en primer lugar la parte # de la pila.
Inserte en primer lugar la parte # de la pila.
R 20 (size D)
×
2
pila R20 (tamaño D)
×
2
Pass the strap through the buckle.
Pase la correa a través de la hebilla.
Pase la correa a través de la hebilla.
Telescopic antenna
Antena telescópica
Antena telescópica
indicator
indicador
indicador
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 CHANGE THE CERAMIC FILTERS
This model is used two ceramic filters of CF1 and CF3.
You must used same type of color marked ceramic filters in order
to meet same specifications.
Therefore, the ceramic filter must changed two pieces together
since it's supply two pieces in one package as a spare parts.
You must used same type of color marked ceramic filters in order
to meet same specifications.
Therefore, the ceramic filter must changed two pieces together
since it's supply two pieces in one package as a spare parts.
– 3 –
SECTION 2
DISASSEMBLY
• This set can be disassemble in the order shown below.
Note:
Follow the disassembly procedure in the numerical order given.
LID, BATTERY CASE
Set
Lid, Battery Case
“Knob (Tuning)”, “Knob (Volume)”
Chassis Section
Main Board
Chassis
Antenna, Ferrite-Red (MW) (L1)
Speaker (9.2 cm) (SP1)
“Antenna, Telescopic (FM/SW) (ANT1)”, “Cabinet (Rear)”
1
Open the battery case lid.
2
boss
2
boss
3
lid, battery case
2
tuning, spring
knob (volume)
hole
variable resistor (RV1)
Note: Insert the knob (volume) into
the variable resistor (RV1),
meeting both shapes of the hole
in the knob and the shaft of RV1 as shown.
meeting both shapes of the hole
in the knob and the shaft of RV1 as shown.
3
knob (tuning)
1
4
6
knob (volume)
5
O ring, P-9
“KNOB (TUNING)”, “KNOB (VOLUME)”
– 4 –
“ANTENNA, TELESCOPIC (FM/SW) (ANT1)”, “CABINET (REAR)”
CHASSIS SECTION
antenna, wire
Note: Arrange the antenna,
wire to the 4 slots.
2
claw
5
lug, 3
2
claw
3
4
screw
(P2.6
(P2.6
×
8)
1
five screws
(BTP3
(BTP3
×
12)
7
cabinet (rear)
6
antenna, telescopic
(FM/SW) (ANT1)
(FM/SW) (ANT1)
2
terminal (+),
battery
battery
3
terminal (–),
battery
battery
4
chassis section
1
Remove two solders
of speaker lead wires.
of speaker lead wires.
MAIN Board
speaker lead wire (RED)
battery terminal (–)
lead wire (WHT)
lead wire (WHT)
SP
3
SP
#
GND
+ B
battery terminal (+)
lead wire (WHT/RED)
lead wire (WHT/RED)
speaker lead wire
(WHT)
(WHT)
•
LEAD WIRE COLOR INDICATION
ON MAIN BOARD.
ON MAIN BOARD.
terminal (–),
battery
battery
terminal (+),
battery
battery
Note: When mounting the battery terminals (+) and (–), engage the lead wires
to the hook on the cabinet (front) and route them as shown.
hook
cabinet (front)
– 5 –
Note: For the mounting position
of the antenna, ferrite-rod (MW) (L1),
refer to the “ANTENNA,
FERRITE-ROD (MW) (L1)”
in DISASSEMBLY.
refer to the “ANTENNA,
FERRITE-ROD (MW) (L1)”
in DISASSEMBLY.
7
claw
slider
7
claw
8
MAIN board
Note: On installation MAIN board
Note: On installation MAIN board
adjust the S1, S2 and
slider, knob (POWER).
slider, knob (POWER).
5
gear (tuning capacitor)
Including “spring (gear)”,
“gear (B), tuning capacitor”.
Including “spring (gear)”,
“gear (B), tuning capacitor”.
Note: When the gear (tuning
capacity), spring (gear),
and the turning capacitor
gear(B) were removed
and then, they are mounted
on the main board,
refer to the “GEAR
(TUNING CAPACITOR)”,
“SPRING (GEAR)”, “GEAR
(B), TUNING CAPACITOR” in
ASSEMBLY on page 8.
and the turning capacitor
gear(B) were removed
and then, they are mounted
on the main board,
refer to the “GEAR
(TUNING CAPACITOR)”,
“SPRING (GEAR)”, “GEAR
(B), TUNING CAPACITOR” in
ASSEMBLY on page 8.
6
Remove LED LN21RPL (TUNE)
(D2) by raising in the arrow direction,
not giving an excessive force.
(D2) by raising in the arrow direction,
not giving an excessive force.
knob
(POWER)
(POWER)
S2
S1
2
screw
(BTP3
(BTP3
×
12)
2
screw
(BTP3
(BTP3
×
12)
1
Remove three solders
of ferrite-rod (MW)
antenna (L1) leads.
of ferrite-rod (MW)
antenna (L1) leads.
4
screw
(B2.6
(B2.6
×
5)
3
holder (gear)
(
)
MAIN BOARD
ANTENNA, FERRITE-ROD (MW) (L1)
2
Remove five portions bond
SC-12N.
SC-12N.
Note: When mounting the antenna,
ferrite-rod (MW) (L1), route the lead wires
as shown and apply the bond SC-12N
to the removed portion.
as shown and apply the bond SC-12N
to the removed portion.
4
antenna, ferrite-rod
(MW) (L1)
(MW) (L1)
3
four claws
1
Remove three solders of
ferrite-rod (MW) antenna (L1)
lead wires.
ferrite-rod (MW) antenna (L1)
lead wires.
•
FERRITE-ROD ANTENNA LEAD WIRE
COLOR INDICATION ON MAIN BOARD.
COLOR INDICATION ON MAIN BOARD.
black lead wire
natural lead wire
red lead wire
MAIN board
BLK
NATURAL
RED
