JVC MX-KA3 Service Manual

MX-KA3
1-17
Fig.31
Fig.29
 Removing the power amp and supply PCB
and the power trans PCB
(See Fig. 2, 29 to 31)

Prior to performing the following procedures, remove
the top cover and CD changer unit.
1. Remove four screws B from the rear panel. (Fig.3)
2.
Pull the heat sink cover outward.
3. Remove four screws AA from the rear panel between
the heat sink holder.
4. Remove two screws X that retain the speaker terminals
and AUX terminal.
5. Remove four screws YY that retains the rear panel,
and then remove the rear panel.
6. Disconnect the parallel wires from the connectors
FW951 on the power trans PCB.
7. Remove screws Z that retain the power amp and
supply PCB and then remove the assembly.
8. Remove the clamp of AC power cord from the chassis.
9. Remove four screws that retain the power trans PCB
and then remove the assembly.
Chassis
Rear panel
Power amp and
supply PCB
Z
X
YY
Clamp
AA
CA-MXKA3U/UJ/UW Fig.30 (B)
X
YY
Clamp
AA
CA-MXKA3A Fig.30 (A)
Fuse(F953)
T1AL 250V
Fuse(F951)
T2AL 250V
Fuse(F952)
T1.6AL 250V

JVC MX-KA3 Specifications

General

Output Power	80 W per channel
Input Sensitivity/Impedance	300 mV/50 kΩ
Frequency Response	63 Hz - 12, 500 Hz
Wow And Flutter	0.15% (WRMS)
CD Capacity	3 CDs
Dynamic Range	85 dB
Signal-To-Noise Ratio	85 dB
FM Tuner Tuning Range	87.5 MHz - 108.0 MHz
AM Tuner Tuning Range	530 kHz - 1, 710 kHz
Dimensions	267 mm x 305 mm x 433 mm
Mass	7.5 kg
Type	3-way bass-reflex type
Woofer	13.5 cm cone
Mid	5 cm cone
Tweeter	2 cm dome
Power Handling Capacity	80 W
Impedance	6 Ω
Frequency Range	45 Hz - 22, 000 Hz
Sound pressure level	89 dB/W.m
Dimensions	228 mm x 316 mm x 258 mm
Mass	3.1 kg
Power Requirements	AC 120 V, 60 Hz
Power Consumption	125 W (power on mode)
Power Consumption in Standby Mode	17 W