28LF-94H (serv.man2) - Sharp TV Service Manual (repair manual). Page 3

The chassis in this receiver is partially hot. Use an isolation transformer between the line cord plug
and power receptacle, when servicing this chassis.
To prevent electric shock, do not remove cover. No user-serviceable parts inside. Refer servicing to
qualified service personnel.

Specifications are subject to change without prior notice.

•Power Input .................... 220V-240 Volts AC 50 Hz

•Power Consumption

Normal Operation (Method IEC60107) ............ 113 W
Stand-by Operation .......................................... < 3 W

•Audio Power Output Rating (MPO) / Impedance

Internal Left Speaker ................................. 10 W, 7 

Ω

Internal Right Speaker ............................... 10 W, 7 

Ω

•Speakers

Full range (2 pcs) ................................... 60 x  120 mm

•Picture Intermediate frequency ......... 38.9MHz

•Sound  Carrier Trap ........................... 32.9MHz

•Adjacent Sound Carrier Trap ............. 40.9MHz

•Adjacent  Picture  Carrier Trap ........... 30.9MHz

•Aerial Input Impedance

VHF/UHF ................. 75 ohm Unbalanced

•Tuning Ranges ..... 45.75MHz thru 855.25 MHz

VHF: IR A - J / CC01-CC68 (Hiperband)
UHF: I21 - I69 CH

•White Level

Apply the rated voltage at the rated frequency to the TV set, while it is receiving full white pattern RF signal of 60
dB/µV from its RF input via the pattern generator.
Turn all picture controls to maximum value. Measure the colour temperatures at the center of the screen by
using the colour analyzer.

•Convergence (Maximum Misconvergence)

A

0.4

BC

1.2

DE

0.8

FGHJ

1.6

KLMN

1.4

F’G’H’J’

1.4

STUV

1.2