Read Sharp HT-SB250 (serv.man2) Service Manual online
HT-SB250
–2
CHAPTER 1: GENERAL DESCRIPTION
[2]
Specifications
CAUTION : “Danger of explosion if battery is incorrectly replaced. Replace only with the same or
equivalent type”.
equivalent type”.
General
(*) This power consumption value is obtained when in the
power stand-by mode.
Power source
DC IN 12V
4A: AC/DC adaptor
(AC 100 - 240 V ~ 50/60 Hz)
Power
consumption
consumption
Power on: 10 W
Power stand-by: 0.4 W (*)
Power stand-by: 0.4 W (*)
Output power
Front speaker:
RMS: 12 W (6 W + 6 W) (10% T.H.D.)
RMS: 9.6 W (4.8 W + 4.8 W) (0.9% T.H.D.)
Subwoofer:
RMS: 20 W (10% T.H.D.)
RMS: 13 W (0.9% T.H.D.)
RMS: 12 W (6 W + 6 W) (10% T.H.D.)
RMS: 9.6 W (4.8 W + 4.8 W) (0.9% T.H.D.)
Subwoofer:
RMS: 20 W (10% T.H.D.)
RMS: 13 W (0.9% T.H.D.)
Speaker
2.1-way Speaker System
Front speakers: 40 mm (1-1/2") Full Range
Impedance: 12 ohms / Channel
Subwoofer: 57 mm (2-1/4") Woofer (x4)
Impedance: 3 ohms
(12 ohms x 4 parallel connections)
Front speakers: 40 mm (1-1/2") Full Range
Impedance: 12 ohms / Channel
Subwoofer: 57 mm (2-1/4") Woofer (x4)
Impedance: 3 ohms
(12 ohms x 4 parallel connections)
Input terminals
Analogue input (LINE 1):
RCA type x 1pair (L/R)
500 mV / 47 kohms
Analogue input (LINE 2):
Stereo mini socket Ø 3.5 mm
100 mV / 47 kohms
RCA type x 1pair (L/R)
500 mV / 47 kohms
Analogue input (LINE 2):
Stereo mini socket Ø 3.5 mm
100 mV / 47 kohms
Dimensions
Width: 851 mm (33-1/2")
Height: 96 mm (3-3/4")
Depth: 70 mm (2-3/4")
Height: 96 mm (3-3/4")
Depth: 70 mm (2-3/4")
Weight
1.90 kg (4.19 lbs.)
[1] Important Service Notes (for U.K. only)
Before returning the unit to the customer after completion of a repair or adjustment it is necessary for the following withstand voltage test to be
applied to ensure the unit is safe for the customer to use.
applied to ensure the unit is safe for the customer to use.
Setting of Withstanding Voltage Tester and set.
Set name
set value
Withstanding Voltage Tester
Test voltage
Test voltage
4,240 VPEAK
3,000 VRMS
3,000 VRMS
Set time
6 secs
Set current (Cutoff current)
4 mA
Unit
Judgment
OK: The “GOOD” lamp lights.
NG: The “NG” lamp lights and the buzzer sounds.
Judgment
OK: The “GOOD” lamp lights.
NG: The “NG” lamp lights and the buzzer sounds.
PROBE
AC
OUT
AC/DC
ADAPTOR
SHORT-CIRCUIT
AC POWER
SUPPLY CORD
AC POWER
SUPPLY CORD
CONNECT THE PROBE
TO SHELL OF DC CONNECTOR
WITHSTANDING
VOLTAGE TESTER
1 – 1
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