Read Sharp QT-CD250 (serv.man6) Service Manual online
QT-CD250H/W
– 3 –
IMPORTANT SERVICE NOTES (QT-CD250H FOR U.K. ONLY)
PROBE
AC
OUT
UNIT
SHORT-CIRCUT
AC POWER
SUPPLY CORD
AC POWER
SUPPLY CORD
CONNECT THE PROBE
TO GND OF CHASSIS
SCREW TERMINAL
TO GND OF CHASSIS
SCREW TERMINAL
WITHSTANDING
VOLTAGE TESTER
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.
Setting of Withstanding Voltage Tester and set.
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.
Setting of Withstanding Voltage Tester and set.
NG: The “NG” lamp lights and the buzzor sounds.
OK: The “GOOD” lamp lights.
Judgment
Unit
Set current (Cutoff current)
Set time
Set name
Withstanding Voltage Tester
Test voltage
Set value
4,240 VPEAK
3,000 VRMS
6 secs
4 mA
FOR A COMPLETE DESCRIPTION OF THE OPERATION OF THIS UNIT, PLEASE REFER
TO THE OPERATION MANUAL.
TO THE OPERATION MANUAL.
SPECIFICATIONS
Specifications for this model are subject to change without
prior notice.
prior notice.
QT-CD250H/W
VOLTAGE SELECTION (QT-CD250W ONLY)
The voltage selector is located on the AC voltage selector box. If adjustment is necessary, use a screwdriver in order to turn the
selector in either direction unitil the correct voltage figure is displayed in the window next the adjustment screw.
selector in either direction unitil the correct voltage figure is displayed in the window next the adjustment screw.
●
General
Power source:
(QT-CD250H for
U.K./Europe)
(QT-CD250H for
U.K./Europe)
AC 230-240 V, 50 Hz
DC 9 V
DC 9 V
[
"D" size (UM/SUM-1, R20
or HP-2) battery
×
6
]
DC 4.5 V
[
"AA" size (UM/SUM-3,
R6 or HP-7) battery
×
3 for backup
memory
]
Power
consumption:
(QT-CD250H)
consumption:
(QT-CD250H)
8 W
Output power:
(QT-CD250H for
Europe)
(QT-CD250H for
Europe)
RMS; 4.6 W (2.3 W + 2.3 W)
(DC operation, DIN 45 324)
MPO; 8.4 W (4.2 W + 4.2 W)
(AC operation, DIN 45 324)
(DC operation, DIN 45 324)
MPO; 8.4 W (4.2 W + 4.2 W)
(AC operation, DIN 45 324)
Speakers:
10 cm (4") full-range speaker
x 2
x 2
Output
terminals:
terminals:
Headphones; 16-50 ohms
(recommended; 32 ohms)
(recommended; 32 ohms)
Dimensions:
Width; 400 mm (15-3/4")
Height; 158 mm (6-1/4")
Depth; 212 mm (8-3/8")
Height; 158 mm (6-1/4")
Depth; 212 mm (8-3/8")
Weight:
2.7 kg (6.0 lbs.)
without batteries
without batteries
●
Compact disc player
Type:
Compact disc
Signal
readout:
readout:
Non-contact, 3-beam semi-
conductor laser pickup
conductor laser pickup
Audio
channels:
channels:
2
Filter:
8-times oversampling
digital filter
digital filter
D/A converter:
1-bit D/A converter
Wow and
flutter:
flutter:
Unmeasurable
(less than 0.001% W. peak)
(less than 0.001% W. peak)
●
Radio
Frequency
range:
(QT-CD250H)
range:
(QT-CD250H)
FM; 87.5 - 108 MHz
AM; 522 - 1,620 kHz
AM; 522 - 1,620 kHz
●
Tape recorder
Frequency
response:
response:
50 - 14,000 Hz
(Normal tape)
(Normal tape)
Signal/noise
ratio:
ratio:
50 dB
Wow and
flutter:
(QT-CD250H for
Europe)
flutter:
(QT-CD250H for
Europe)
0.3 % (DIN 45 511)
Motor:
DC 9 V electric governor
Bias system:
AC bias
Erase
system:
system:
Magnet erase
Power source:
(QT-CD250H for
Australia/
New Zealand/
Philippines)
(QT-CD250H for
Australia/
New Zealand/
Philippines)
●
For customers in Australia and
New Zealand;
AC 230-240 V, 50 Hz
AC 230-240 V, 50 Hz
●
For customers in Philippines;
AC 220 V, 60 Hz
DC 9 V
DC 9 V
[
"D" size (UM/SUM-1, R20
or HP-2) battery
×
6
]
DC 4.5 V
[
"AA" size (UM/SUM-3,
R6 or HP-7) battery
×
3 for backup
memory
]
Power source:
(QT-CD250W)
(QT-CD250W)
AC 110-127/220-240 V, 50/60 Hz
DC 9 V
DC 9 V
[
"D" size (UM/SUM-1, R20
or HP-2) battery
×
6
]
DC 4.5 V
[
"AA" size (UM/SUM-3,
R6 or HP-7) battery
×
3 for backup
memory
]
Power
consumption:
(QT-CD250W)
consumption:
(QT-CD250W)
10 W
Output power:
(QT-CD250H for
U.K./Australia/
New Zealand/
Philippines/
OT-CD250W)
(QT-CD250H for
U.K./Australia/
New Zealand/
Philippines/
OT-CD250W)
RMS; 4.6 W (2.3 W + 2.3 W)
(DC operation, 10 % T.H.D.)
MPO; 8.4 W (4.2 W + 4.2 W)
(AC operation, 10 % T.H.D.)
(DC operation, 10 % T.H.D.)
MPO; 8.4 W (4.2 W + 4.2 W)
(AC operation, 10 % T.H.D.)
Wow and
flutter:
(QT-CD250H for
U.K./Australia/
New Zealand/
Philippines/
QT-CD250W)
flutter:
(QT-CD250H for
U.K./Australia/
New Zealand/
Philippines/
QT-CD250W)
0.25 % (WRMS)
●
Radio
Frequency
range:
(QT-CD250W)
range:
(QT-CD250W)
FM; 88 - 108 MHz
AM; 531 - 1,602 kHz
AM; 531 - 1,602 kHz
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