Sony icf k 7000 service manual

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Extracted text from sony icf k 7000 service manual (Ocr-read)

Page 1

SERVCE MAUNAL

AEP Model
UK Model
E Model

SPECIFICATIONS

Frequency range FM: 87.64075 MHz
AM: $314,602 kHz
Intermediate FM: 107 MHz
frequency AM: 455 kHz

Note on replacing ceramic filters CF1 and CF2.
Two ceramic filters which have the same center frequency
are included in the part (Part No, 1567-53841).

. For CFl (FM 1}?) ........................... 3 leads

- For CF2 (FM discriminator) ------------ 2 leads
When replacing CFl or CFZ. be sure to replace both of them
with new parts.

FM/AM RECEIVER
SONY;

Page 2

SECTION 1
DISASSEMBLY

Non: Follow the disassembly procedure in the numerical order given.

POINTER AND DIAL GEAR SETTING

0 Slide the pointer in the groove of the front cabinet, so
that the end of the pointer is in the position shown in
Fig. It

0 Install the dial gear in alphabetical order.

dial gear

pointer

end of pointer

Fig. 1

MAIN BOARD INSTALLATION

0 Turn the gear (tuning capacitor) fully in the direction of
arrow
0 install the main board.

main board

gear
(tuning capacitor)

front cabinet

SECTION 2
ADJUSTMENTS

AM SECTION

AM RF SSS

VTVM
(range : 0.5 - 5V ac)

-o+

Put the leadwire
antenna close to

M lhe set,
0 cl:
30% amplitude

modulation by
400Hz signal

set
.0-

speaker output

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

AM FREQUENCY
COVERAGE ADJ USTMENT

AM TRACKING
ADJUSTMENT

Adjust for a maximum
reading on VTVM

L8
5 I 65kHz

CT4
IVSSIkHz

L4
620kHz

CTI
IAOOkHz

FM SECTION

FM RF sso VTVM

(range 2 05 75V ac)

-o+

set

.0-

225kHz frequency
deviation by 400Hl
signal

speaker output

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

FM FREQUENCY
COVERAGE ADJUSTMENT

FM TRACKING
ADJUSTMENT

Adjust for a maximum
reading on VTVM

L7
87.35MH2

CTS
[08.05MHZ

CT2
108.05MHZ

L5. 6
8735MH2

AM Tracking Adjustment

CTL L4 AM Frequency
FM Tracking Adjustment Coverage
Adiu tment
L5, 6, cm
CT4, LS

CT3, L7

FM Frequency
Coverage
Adjustment