Troubleshooting; Specifications - JVC UX-A70MDR Instructions Manual

Troubleshooting

If you are having a problem with your unit, check this list for a possible solution before calling for service.
If you cannot solve the problem from the hints given here, or the unit has been physically damaged, call a qualified person, such as your
dealer, for service.
Symptom
No sound is heard.
Unable to record on an MD.
Poor radio reception.
Unable to operate the remote control.
Loaded CD and MD can not be ejected.
The CD does not play.
The CD skips.
Operations are disabled.

Specifications

Amplifier
Output Power (IEC 268-3/DIN):
44 W (22 W + 22 W) at 4
40 W (20 W + 20 W) at 4
Audio input sensitivity/Impedance (at 1 kHz)
LINE IN: 400 mV/48 k
Audio output level/Impedance (at 1 kHz)
LINE OUT: 260 mV/5.8 k
Speaker Terminals: 4 – 16
Tuner
FM tuning range:87.50 MHz — 108.00 MHz
AM (MW/LW) tuning range:
MW: 522 kHz — 1 629 kHz
LW: 144 kHz — 288 kHz
CD player
CD Capacity: 1 CD
Dynamic range: 85 dB
Signal-to-noise ratio: 90 dB
Wow and flutter: Immeasurable
MD recorder
Audio playing system: MiniDisc digital audio system
Recording system: Magneto-optical overwrite system
Reading system: Non-contact, semiconductor laser
pickup ( =780 nm)
Error correction system: CIRC (Cross Interleave Reed-Solomon
Code)
Recording/Playback time (when using a 80-minute MD )
SP: 80 minutes
LP2: 160 minutes
LP4: 320 minutes
Possible Cause
Connections are incorrect or loose.
• You are using a prerecorded MD.
• The MD is write-protected.
• The antenna is not connected correctly.
• The AM loop antenna is too close to the unit.
• The FM antenna is not properly extended and
positioned.
• The path between the remote control and the
remote sensor on the unit is blocked.
• The batteries have lost their charge.
• You are using the remote control far from the
main unit.
The main AC power cord is not plugged in.
The CD is upside down.
The CD is dirty or scratched.
The built-in microprocessor has malfunctioned due
to external electrical interference.
(MAX.)
(10 % THD)
US and foreign patents licensed from Dolby Laboratories
Licensing Corporation.
Sampling frequency:
Audio compression system:
ATRAC (Adaptive TRansform Acoustic
Coding)/ATRAC3 (
Speaker Section
Speakers: Woofer 10 cm, Tweeter 4 cm
Impedance: 4
Dimensions (approx.):
130 mm x 215 mm x 231.5 mm (W/H/D)
1
(5 /
8
Mass (approx.): 2.0 kg (4.5 lbs)
General
Power requirement:
Power consumption:
Dimensions (approx.):
431 mm x 217 mm x 330 mm (W/H/D)
(17 in. x 8
Mass (approx.): 8.5 kg (18.8 lbs)
Supplied accessories
See page 6.
Design and specifications are subject to change without notice.
– 50 –
Action
Check all connections and make
corrections. (See pages 6 – 9.)
• Change it with a recordable MD.
• Unprotect the MD. (See page 29.)
• Reconnect the antenna securely.
• Change the position and direction of
the AM loop antenna.
• Extend FM antenna to the best
reception position.
• Remove the obstruction.
• Replace the batteries. (See page 9.)
• Signals cannot reach the remote
sensor. Move close to the main unit.
Plug in the AC power plug.
Put the CD in with the label side up.
Clean or replace the CD. (See page 46.)
Unplug the unit then plug it back in.
44.1 kHz
)
1 1
in. x 8 / in. x 9 / in.)
2 8
AC 230V , 50 Hz
50 W (at operation)
3.9 W (on standby)
9
/ in. x 13 in.)
16