Read Sharp 28LF-92H Service Manual online
3
28LF-92H
ELECTRICAL SPECIFICATIONS
WARNING
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.
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.
Position of measuring points on the screen
Distance of measuring points (mm)
H ( 2h = H )
270
V ( 2v = V )
140
c 10
Admissible misconvergence in X - and Y - direction (mm)
Measuring points
misconvergence
Centre 0 0.4
Corner points
1 ; 2 ; 3 ; 4
1.8
Medium points
9 ; 10 ; 11 ; 12
1.4
right, left
5 ; 6
1.2
top, bottom
7 ; 8
1.2
c
h
H
1
9
7
10
2
5
0
6
4
12
8
11
3
V
v
•Power Input .................... 220V-240 Volts AC 50 Hz
•Power Consumption
Normal Operation (Method IEC60107) ............... 90 W
Stand-by Operation .......................................... < 4 W
Stand-by Operation .......................................... < 4 W
•Audio Power Output Rating (MPO) / Impedance
Internal Left Speaker ................................. 10 W, 7
Ω
Internal Right Speaker ............................... 10 W, 7
Ω
•Speakers
2 ways speaker elliptic (2 pcs) ............ 50 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
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.
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.
X=0.290 ± 0.015 Y=0.284 ± 0.015
•Convergence (Maximum Misconvergence)
Click on the first or last page to see other 28LF-92H service manuals if exist.