ICF-J1 — Sony Audio Service Manual (repair manual)

Model
ICF-J1
Pages
17
Size
839.82 KB
Type
PDF
Document
Service Manual
Brand
Device
Audio
File
icf-j1.pdf
Date

View Sony ICF-J1 Service Manual online

SERVICE MANUAL
Ver 1.0  2000. 12
FM/SW/MW 3 BAND RADIO
E Model
ICF-J1
SPECIFICATIONS
Frequency range:
FM: 87.5 – 108 MHz
SW: 4.75 – 18.0 MHz
MW: 530 –  1 605 kHz
Speaker
Approx. 9.2 cm (3 
5
/
8
 inches) dia., 8 
Output
v
 jack (ø 3.5 mm minijack)
Power output
350 mW (at 10 % harmonic distortion)
Power requirements
3 V DC, two R20 (size D) batteries
Dimensions
Approx. 233 
×
 119.2 
×
 56 mm (w/h/d)
(9 
1
/
4
 
×
 4 
3
/
4
 
×
 2 
1
/
4
 in.) incl. projecting parts
and controls
Mass
Approx. 815 g (29 oz) incl. batteries
Supplied accessories
(Middle Eastern model only)
Case (1)
Hand strap (1)
Design and specifications are subject to change
without notice.
Battery life (approx. hours)
When using
FM
SW/MW
Sony alkaline
 240
250
LR20 (size D) batteries
Sony
 120
130
R20 (size D) batteries
Features
• High power sound
• Long battery life with two R20 (size D)
batteries
• High sensitivity
• Easy tuning with the tuning indicator
– 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
6.
EXPLODED  VIEWS
................................................ 17
7.
ELECTRICAL  PARTS  LIST
............................... 19
SECTION  1
GENERAL
This section is extracted from
instruction manual.
Insert the # side of the battery first.
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.
Telescopic antenna
Antena telescópica
indicator
indicador
Notes on chip component replacement
• Never reuse a disconnected chip component.
• 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.
– 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.
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 
×
 8)
1
five screws
(BTP3 
×
 12)
7
cabinet (rear)
6
antenna, telescopic
(FM/SW) (ANT1)
2
terminal (+), 
battery
3
terminal (–), 
battery
4
chassis section
1
Remove two solders 
of speaker lead wires.
MAIN Board
speaker lead wire (RED)
battery terminal (–)
lead wire (WHT)
SP 
3
SP 
#
GND
+ B
battery terminal (+)
lead wire (WHT/RED)
speaker lead wire 
(WHT)
LEAD WIRE COLOR INDICATION
ON MAIN BOARD.
terminal (–), 
battery
terminal (+), 
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.
7
claw
slider
7
claw
8
MAIN board
Note: On installation MAIN board
adjust the S1, S2 and 
slider, knob (POWER). 
5
gear (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.
6
Remove LED LN21RPL (TUNE) 
(D2) by raising in the arrow direction, 
not giving an excessive force.
knob 
(POWER)
S2
S1
2
screw 
(BTP3 
×
 12)
2
screw 
(BTP3 
×
 12)
1
Remove three solders
of ferrite-rod (MW)
antenna (L1) leads.
4
screw 
(B2.6 
×
 5)
3
holder (gear)
(
)
MAIN  BOARD
ANTENNA,  FERRITE-ROD (MW) (L1)
2
Remove five portions bond 
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. 
4
antenna, ferrite-rod 
(MW) (L1)
3
four claws
1
Remove three solders of 
ferrite-rod (MW) antenna (L1) 
lead wires.
FERRITE-ROD ANTENNA LEAD WIRE
COLOR INDICATION ON MAIN BOARD.
black lead wire
natural lead wire
red lead wire
MAIN board
BLK
NATURAL
RED

Download Sony ICF-J1 Service Manual (Repair Manual)

Here you can view online or download Sony ICF-J1 Service Manual in pdf. This Service Manual can help you recover, restore, fix, disassemble and repair Sony ICF-J1 Audio. Information contained in Sony ICF-J1 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).