Sony ICF-7800 Service Manual

X-3880-906-1 ©
Case Ass‘y, rear; speaker section;
including parts marked ®* A ~~ D
1-401-656-00 ©
Antenna, ferrite-rod (L8)
X-3880-907-1 ©)
Lid Ass‘y, battery
attery ribbon
TA, P3x8
x8
3-880-945-00
Chassis Ass‘y,
dial film
4.301-147-XX ®)
Cushion (t6)
1-520-252-00 @
Meter (ME)
3-831-441-XX ®
Cushion (t 05)
TA, P2.6x 6
aA
X-3880-909-1 ‘B:
Button Ass‘y, release
30-908-1 (1)
Ass’y, front; dial section;
ding parts marked @A ~ aD
Contact, battery
3-880.937-00 ® _||
Knob, TUNING
| ICF-7800 ICF-7800 |
Ref. No.
=B
ac
=] } AT,B3x 25
<5
1-516-874-00
©
Q1,2
Switch, slide; BAND
SELECT
(Si)
=>
Q3,4
X-3880-905-1 ©
Case Ass‘y, rear, dial section;
including part marked 4A
1-518-225-00 i
Lamp, meter; 5 V60mA (PL)
\
ICl
aA
IC2,3
IC4
ICS
IC6
9-911-853-XX ©
Cushion (t7) .
IC7
Plate, shield (D) P3x14 Ic8
Gear (8B)
a
ll
Circuit
Board,
main
=> D2,3
TA,P3x 12
® 1-151-306-00 D ot
Capacitor, tuning (CV1) y
3:880-929-00 @® 2)
7 S&F Gear, tuning capacitor
3 G 3.880:990-00
‘ Rip rew, 1.7 x 3;
NI 1807-48200 8 iat head Th1,2
lack, recording,
MPX
OUT
(8)
Th3
ae ; '9-911-863-XX 3.880-928-00 ®
Chassis, dial section PBK OF Spacer (t0.5) € Knob, BAND SELECT
1-224-739-00 © q
Resistor, 50kQ variable; Gear (A)
BASS, TREBLE (VR1, 2! 1-224-738-00 ©
Shaft, gear (A) Resistor, 10kQ variable;
VOLUME (VR3)
IFTAL
a IFTF1
Circuit Board,
1-516-872-21 © i :
Switch, rocker; POWER ee
($3)
1-516-872-11 ©
Switch, rocker; AEC,
METER SELECT (S4, 5)
;
Holder,
band
select
knob
BPF
3.880.980-00 @ CF1~3
Holder (8), gear Qo gear (C) ® CFT
Holder (A), gear
Gear, dial
Nut
Gear (C)
Note: L3
e@
items
with
no
part
number
and/or
no
14
description
are
not
stocked
because
they
es
are seldom required for routine service.
e All screws are Phillips (cross recess) type
unless otherwise noted.
(—) =slotted head
e Circled letters (@ to @) are applicable to
European models only.
e@
(GOT)
shows
the
number
of
coils
in
spring.
SECTION 6
ELECTRICAL PARTS LIST
© Circled letters ( @ to @ ) are applicable to European
models only.
Part
No.
Description
Ref.
No.
Part
No.
Description
SEMICONDUCTORS
L6
1-407-471-00
Microinductor,
474H
L7 1-401-647-00 SW ANT
Transistors
L8
1-401-656-00
©
Antenna,
ferrite-rod
L9 1-407-481-00 Microinductor, 330uH
©
2sk42
L10
1-407-186-XX
(A)
Microinductor,
4.7
4H
© 28A772-23
L11 1-405-709-00 MW OSC
ICs L12 1-405-708-00 SW OSC
L13 1-407-178-XX Microinductor, 1H
® cx160
® cx161
@ cx162
@ cx163 CAPACITORS
©
cx165
;
F
}
All capacitors are in uF and of ceramic unless
otherwise noted. (p=uuF, elect = electrolytic)
© cx164 50 or less working voltages are omitted except
® CX077 for electrolytic type.
Diodes cl 1-102-943-11 @) 6p
C2 1-102-958-11 () 20p
182076A
C3
1-161-026-11
(@)
0.001
(boundary
layer)
1T261 C4 1-102-936-11 @ 3p
C5 1-127-018-11 0.047 16V_ solid aluminum
Thermistors
C6 1-102-960-11 (@) 24p
1-800-071-XX
()
S-300
C7,8
1-102-942-11
@
5p
1-800-193-00
(@)
S-68
c9
1-102-268-11
(@)
0.001
C10 1-161-032-11 ©) 0.01 (boundary layer)
Cll 1-161-026-11 (@) 0.001 (boundary layer)
TRANSFORMERS
C12 1-102-268-11 (A) 0.001
1-404-022-00
AM
IFT
C13
1-161-030-11
(@)
0.0047
(boundary
layer)
1-404-032-00
©
FM
IFT
C14
1-131-187-11
100
3.15V_
tantalum
C15 1-161-032-11 (@) 0.01 (boundary layer)
C16 1-161-026-11 @® 0.001 (boundary layer)
FILTERS
C17 1-102-268-11 (@) 0.001
1-231-315-00
BPF,
FM
C18
1-102-943-11
@)
6p
1-527-184-XX
Ceramic,
10.7
MHz
C19,20
1-161-032-11
@®
0.01
(boundary
layer)
1-404-070-00
©
Ceramic,
SW,
MW
C21
1-102-268-11
(@)
0.001
C22 1-161-032-11 (@) 0.01 ‘(boundary layer)
COILS
C23
1-131-182-11
10
3.15V_
tantalum
C24 1-161-032-11 () 0.01 (boundary layer)
1-459-183-00
FM
RE
C25
1-102-109-11
(@)
180p
1-407-882-00
1pH
C26
1-161-032-11
@
0.01
(boundary
layer)
1-459-187-00
FM
OSC
C27
1-121-931-11
220
6.3V_
elect
=>:
Due
to
standardization,
interchangeable
replacements
may
be
substituted
for
parts
specified
in
the
diagrams.
24

Sony ICF-7800 Specifications

General

Brand	Sony
Model	ICF-7800
Category	Receiver
Language	English