Sony icf 55 r service manual

Page 1

TUN E (Tuning)

indicator

AUTO WIND -*

Dial scale

Speaker

POWER/AUTO OFF Knob Tour/St Model

TUNING knob

BAND knob

©/ D1 (earphone/speaker)
selector

@(ea rpho ne) ja ck

Frequency range

Antennas

Speaker
Output
Power output

Power requirements

Battery life

SPEUFwAflONS

FM: 76-108 MHz(TV1-3ch)'

AM: 530-1,605 kHz

FM: Built-in ear receiver cord antenna
AM: Built~in ferrite bar antenna

3.6 cm dia

Earphone jack

80 mW (at 10% harmonic distortion)

3V DC, two R03 (size AAA) batteries

Using Sony batteries UM~4(NU)

Using FM Approx. 18 hours
speaker

AM Approx. 20 hours
Using FM Approx. 28 hours
earphone

AM Approx. 32 hours

Auto power off function
More than 80 minutes

Approx. 58.4 x 96.9 x 17 mm(w/h/d)
incl. projecting parts and controls
Approx. 84 g incl. batteries

Dimensions

Weight

Accessories supplied

Sony batteries UM-4(NU)(2)

Carrying case (1)

Design and specifications subject to change without notice
Receivable only in Japan

FM/AM RECEIVER
S 0 NE.

Page 2

ICE-55R

SECTION 1
REMOVAL

1-1. CABINET (REAR) REMOVAL
0: shows latch portion

9 Remove tapping screw
(31,7X 1 3.5).

A Open the cover.
knob (power)

cabinet (rear)

\
0 Insert a broad-flat screwdriver in the (\
groove oI the cabinet (rear) and open it

1-2. NOTE ON INSTALLING MAIN MOUNTED BOARD
Install main mounted board in the cabinet (rear) after checking that the
lever for power switch is in the position where it pushes up the knob
(power) as illustrated below,
If not, it causes the lever broken.

lever Ior power switch

main mounted board

cabinet (rear)

knob (power)

1-3. POINTER SETTING
0 Turn the knob (tuning) fully in the direction of arrow
(50 that the gear 2 is turned fully in the direction of arrow)
9 Fasten the screw pressing down the gear 2 by fingers
0 Install the gear 1 in portion A so that portion B of the gear 1 bites
the gear 2 as illustrated below
0 Align the middle of the pointer with the middle of the scratched lines
and install the pointerl
gear 1
gear 2

/
A _
gem TE.- pom
its:

(pointer) :12?
\ screw M1,7><2.5

scratched lines

gear 2

A (variable capacitor)

knob (tuning)

0 Open the battery case lid.

SECTION 2
ADJUSTMENT

AM SECTION

Put the |ead~wire

VTVM
I
AM RF sse meg? 39 t° (range: 0.5-5v ac)

III
@52/ --'I::

30% amplitude
modulation by
400Hz signal

ea rphone

Repeat the procedure in each adjustment several times, and the frequen-
cy coverage and tracking adjustments should be finally done by the
trimmer capacitors.

AM FREQUENCY
COVERAGE ADJUSTMENT

Adjust for a maximum
reading on VTVM

AM TRACKING
ADJUSTMENT

Adjust for a maximum
reading on VTVM

L4 Cll-Z L1 CTl-I
520kHZ 1,650kHz GZOkHz 1,400kHZ
VTVM
FM RF $56 (range: 0.5-5v ac)
CD
set \ :
+22,5kHz frequency earphone

deviation by AOOHz

signal ANT test point

Repeat the procedure in each adjustment several times, and the frequen-
cy coverage and tracking adjustments should be finally done by the
trimmer capacitors,

FM FREQUENCY
COVERAGE ADJUSTMENT

Adjust for a maximum Adjust for a maximum
reading on VTVM reading on VTVM

FM TRACKING
ADJUSTMENT

L3 CT3 L2 CTZ

75.0MHz 10945MH2 8040MH2 104l0MHz

AM Tracking Adjustment

F...»-

CTl-l L1

err-2 L4
FM Frequency AM Frequency FM
Coverage Coverage Tracking Adjustment
Adjustment Adjustment

,2