Panasonic SA-PMX3E / SA-PMX3EG / SC-PMX3E Service Manual ▷ View online
I AMPLIFIER SECTION
RMS output power Stereo Mode
RMS output power Stereo Mode
Front Ch (both ch driven)
80 W per channel (3
Ω), 1 kHz,
10% THD
Total RMS Stereo mode power
160 W
I FM/AM TUNER, TERMINALS SECTION
Preset memory
FM 30 stations
AM 15 stations
Frequency Modulation (FM)
Frequency range
87.50 to 108.00 MHz
(50 kHz step)
Sensitivity
4.5 dBµV (IHF)
S/N 50 dB
9.0 dBµV
Antenna terminals
75
Ω (unbalanced)
Amplitude Modulation (AM)
Frequency range
522 to 1629 kHz (9 kHz step)
AM Sensitivity S/N 20dB at 999
kHz
kHz
660 µV/m
Music Port input jack
Sensitivity
100 mV, 11 k
Ω
Terminal
Stereo, 3.5 mm jack
Phone jack
Terminal
Stereo, 3.5 mm jack
Option port
Version 1
SA-PMX3E
SA-PMX3EG
Colour
(S)... Silver Type
(S)... Silver Type
I CD SECTION
Disc played (8 cm or 12 cm)
Disc played (8 cm or 12 cm)
(1) CD, CD-R/RW (CD-DA, MP3 *)
* MPEG-1 Layer 3, MPEG-2 Layer 3
Pick up
Wavelength (CD)
785 nm
Laser power (CD)
CLASS 1
Audio output (Disc)
Number of channels
(FL, FR), 2 Channel
I USB SECTION
USB port
USB port
USB standard
USB 2.0 full speed
Media file format support
MP3 (*.mp3)
USB device file system
FAT 12 / FAT 16 / FAT 32
USB port power
Max 500mA
USB ripping bit rate
128 / 192 / 320 kbps
Frequency response
4 Hz to 20 kHz
Output level ( 1 kHz, 0 dB)
1000 mV ± 150 mV
S/N ratio
> 80 dB
Dynamic range
> 80 dB
Separation
> 60 dB
Total harmonic distortion
< 0.1 %
USB recording speed
1x, 4x (CD only)
CD Stereo System
Notes: This model’s mechanism unit is DLS6C. Please refer to the original Service Manual (Order No.
MD0803034CE) for this mechanism.
MD0803034CE) for this mechanism.
Specifications
ORDER NO. MD0803007CE
Recording file format
MP3 (*.mp3)
I GENERAL
Power supply
AC 230 V, 50 Hz
Power consumption
85 W
Dimensions (W x H x D)
175 mm x 240 mm x 349.8 mm
Mass
4.5 kg
Operating temperature range
0°C to +40°C
Operating humidity range
35 to 80% RH (no condensation)
Power
consumption
in
standby
mode
0.7 W (Approximate)
1
Safety Precautions
3
2
Prevention of Electro Static Discharge (ESD) to
Electrostatically Sensitive (ES) Devices
5
3
Precaution of Laser Diode
6
4
Handling Precautions for Traverse Unit
7
5
Handling the Lead Free Solder
9
6
Operation Procedures
10
7
Self diagnosis and special mode setting
12
8
Assembling and Disassembling
17
9
Assembling and Disassembling of CD Mechanism Unit
39
10 Service Fixture and Tools
42
Note:
1.
Specifications are subject to change without notice.
Mass and dimensions are approximate.
Mass and dimensions are approximate.
2.
Total harmonic distortion is measured by the digital spectrum
analyzer.
analyzer.
I System: SC-PMX3E-S
Music center: SA-PMX3E-S
Speakers: SB-PMX3EG-K
I System: SC-PMX3EG-S
Music center: SA-PMX3EG-S
Speakers: SB-PMX3EG-K
11 Service Position
43
12 Voltage Measurement & Waveform Chart
48
13 Wiring Connection Diagram
57
14 Block Diagram
59
15 Notes Of Schematic Diagram
65
16 Schematic Diagram
67
17 Printed Circuit Board
81
18 Illustration of IC’s, Transistors and Diodes
87
19 Terminal Function of IC’s
88
20 Exploded Views
91
21 Replacement Parts List
93
CONTENTS
Page
Page
2
SA-PMX3E / SA-PMX3EG
1.1.2. Leakage Current Hot Check
1 Safety Precautions
1.1. General Guidelines
1. When servicing, observe the original lead dress. If a short circuit is found, replace all parts which have been overheated or
damaged by the short circuit.
2. After servicing, ensure that all the protective devices such as insulation barriers, insulation papers shields are properly installed.
3. After servicing, check for leakage current checks to prevent from being exposed to shock hazards.
1.1.1. Leakage Current Cold Check
1. Unplug the AC cord and connect a jumper between the two prongs on the plug.
2. Using an ohmmeter measure the resistance value, between the jumpered AC plug and each exposed metallic cabinet part on
the equipment such as screwheads, connectors, control shafts, etc. When the exposed metallic part has a return path to the
chassis, the reading should be between 1M
chassis, the reading should be between 1M
Ω and 5.2Ω.
When the exposed metal does not have a return path to the chassis, the reading must be
.
1. Plug the AC cord directly into the AC outlet. Do not use an isolation transformer for this check.
2. Connect a 1.5k
Ω, 10 watts resistor, in parallel with a 0.15µF capacitors, between each exposed metallic part on the set and a
good earth ground such as a water pipe, as shown in Figure 1.
3. Use an AC voltmeter, with 1000 ohms/volt or more sensitivity, to measure the potential across the resistor.
4. Check each exposed metallic part, and measure the voltage at each point.
5. Reverse the AC plug in the AC outlet and repeat each of the above measurements.
6. The potential at any point should not exceed 0.75 volts RMS. A leakage current tester (Simpson Model 229 or equivalent) may
be used to make the hot checks, leakage current must not exceed 1/2 milliamp. should the measurement is outside of the limits
specified, there is a possibility of a shock hazard, and the equipment should be repaired and re-checked before it is returned
to the customer.
specified, there is a possibility of a shock hazard, and the equipment should be repaired and re-checked before it is returned
to the customer.
Figure 1
3
SA-PMX3E / SA-PMX3EG
1.2. Before Repair and Adjustment
Disconnect AC power, discharge Power Supply Capacitors C2602, C2641, C2642, C5015, C5016, C5110, C5916, C5917 and
C5938 through a 10
C5938 through a 10
Ω, 1W resistor to ground.
DO NOT SHORT-CIRCUIT DIRECTLY (with a screwdriver blade, for instance), as this may destroy solid state devices.
After repairs are completed, restore power gradually using a variac, to avoid overcurrent.
• Current consumption at AC 230 V, at 50 Hz in NO SIGNAL mode (at volume min) should be ~300 mA.
1.3. Protection Circuitry
The protection circuitry may have operated if either of the following conditions are noticed:
• No sound is heard when the power is turned on.
• Sound stops during a performance.
The function of this circuitry is to prevent circuitry damage if, for example, the positive and negative speaker connection wires are
"shorted", or if speaker systems with an impedance less than the indicated rated impedance of the amplifier are used.
• Sound stops during a performance.
The function of this circuitry is to prevent circuitry damage if, for example, the positive and negative speaker connection wires are
"shorted", or if speaker systems with an impedance less than the indicated rated impedance of the amplifier are used.
If this occurs, follow the procedure outlines below:
1. Turn off the power.
2. Determine the cause of the problem and correct it.
3. Turn on the power once again after one minute.
Note:
When the protection circuitry functions, the unit will not operate unless the power is first turned off and then on again.
1.4. Safety Part Information
Safety Parts List:
There are special components used in this equipment which are important for safety.These parts are marked by
in the
Schematic Diagrams & Replacement Parts List. It is essential that these critical parts should be replaced with manufacturer’s
specified parts to prevent shock, fire or other hazards. Do not modify the original design without permission of manufacturer.
specified parts to prevent shock, fire or other hazards. Do not modify the original design without permission of manufacturer.
Table 1
Reference No.
Part No.
Part Name & Description
Remarks
A2
K2CQ2CA00007
AC CORD
[M]
JK5970
K2AA2B000017
AC INLET
[M]
T5900
G4CYAYY0 0174
POWER TRANSFORMER
[M]
T5901
G4CYAYY0 0137
SUB-TRANSFORMER
[M]
F5970
K5D162BLA013
FUSE
[M]
L5970
ELF15N035AN
LINE FILTER
[M]
RL5970
K6B1AEA00003
POWER RELAY
[M]
Z5970
ERZVA5Z471
ZENER
[M]
FP5920
K5G402A00025
FUSE PROTECTOR
[M]
FP5922
K5G202AA0002
FUSE PROTECTOR
[M]
22
RKSX0070G-H
REAR PANEL
[M]
21
RKMX0142-S
TOP CABINET
[M]
PCB1
REPX0633A
TRANSFORMER P.C.B.
[M]
(RTL)
301
RAEX0190Z-V
TRAVERSE UNIT
[M]
(RTL)
4
SA-PMX3E / SA-PMX3EG