JVC UX-M3R Service Manual

UX-M3R
1-17
Flow of functional operation until TOC read
Power ON
Slider turns REST
SW ON.
Laser ON
Confirm that the voltage at the pin5 of CN703 is
"H"/"L"/"H"
Check that the voltage at the pin10(LD) of
CN704 is +1.35V.
Focus start
FOK
PLL Lock
Turn on radial
servo
Read TOC
Confirm the eye-pattern at the "RF" test point.
Turn on focus
servo
Disc spinning
Radial_error
scaling
Check that the voltage at the pin1 and pin2 of
CN703 is +0.65V.
Before connecting a measuring instrument to
the measuring point, turn the power of the
main unit to OFF.
After performing a measurement and before
disconnecting the measuring instrument,
again turn the power of the main unit to OFF.
(If a measuring instrument is disconnected
while an electric current is being output to the
main unit, the pick up of the main unit will be
damaged.)
Caution

JVC UX-M3R Specifications

Amplifier Specifications

output power	24 W (12 W + 12 W) at 8 Ω (MAX.)
output power at THD	20 W (10 W + 10 W) at 8 Ω (10% THD)
audio output level	800 mV/32 Ω
speakers impedance	8 Ω - 16 Ω

Tuner Specifications

FM tuning range	87.50 MHz - 108.00 MHz
MW tuning range	522 kHz - 1 629 kHz

CD Player Specifications

dynamic range	60 dB
signal-to-noise ratio	60 dB
wow and flutter	Unmeasurable

Cassette Deck Specifications

frequency response for normal tape	100 Hz - 10 000 Hz
wow and flutter	0.35% (WRMS)

General Specifications

power requirement	AC 240 V, 50 Hz
power consumption (operation mode)	30 W
power consumption (standby mode)	1.5 W
dimensions	160 mm × 269.5 mm × 300 mm
mass	4.3 kg

Speaker Specifications

speaker unit (woofer)	10.2 cm cone × 1
speaker unit (tweeter)	5.1 cm cone × 1
impedance	8 Ω
dimensions	160 mm × 269.5 mm × 192 mm
mass	2 kg/each