HT-CN300H (serv.man4) - Sharp Audio Service Manual (repair manual). Page 8

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Signal generator: 400 Hz, 30%, AM modulated

*1. Input: Antenna

Output: TP302

*2. Input: Antenna

Output: TP301

fL: Low-range frequency
fH: High-range frequency

AM IF

450 kHz

1,620 kHz

T351

*1

AM Band

—

522 kHz

(fL): T306

*2

Coverage

1.4 

±

 0.1 V

AM Tracking 990 kHz

990 kHz

(fL): T302

*1

•  FM IF
Notes:
1: Description of the "FM IF Adjustment" is not carried on this

Manual. It is because the IF coil in the FM front end section
has been best adjusted in the factory so that its further
adjustment is not needed at the field. When replacing the
FM front end assembly, no adjustment is needed either.

2: The parts in the FM front end section are prepared in a

complete unit, so you can't obtain each part individually.

1: Connect all cables.
2: Power ON
3: Video input (DVD IN or VIDEO 1-IN or VIDEO 2-IN) :PAL

Signal.

4: Adjust Vfc with rotated of TC432. Vfc range : 2.65 V - 2.75V

(Chick with DC voltmeter, connect (+) of DC voltmeter to pin
26 of IC401, connect (-) of DC voltmeter to pin 2 of
CNP431).

VIDEO PWB

IC401

26

Vcf

(2.65 V - 2.75 V)

TC432

C453

GND

R522

CNP431

TP302

TP301

T306

VR351

FM MUTE LEVEL

T302

T351

R357

FE301

R381

CNP301

AM LOOP 

ANTENNA

AM BAND
COVERAGE fL

L354

AM IF

AM TRACKING
fL

TUNER PWB

8

SO301

FM ANTENNA

TERMINAL