Read Panasonic SA-PM46E / SA-PM46EG / SA-PM46EF / SC-PM46E Service Manual online
I Amplifier Section
RMS OUTPUT POWER both channel driven simultaneously
10% Total harmonic distortion
20 W per channel (4
Ω)
Input Impedance
MUSIC PORT
250 mV 12 k
Ω
Output Impedance
HEADPHONE
16 to 32
Ω
Phone jack
Terminal
Stereo, 3.5 mm
Music Port jack
Terminal
Stereo, 3.5 mm
I FM Tuner Section
Frequency range
87.50 to 108.00 MHz
(50 kHz step)
Sensitivity
0.10 µV (IHF)
S/N 30 dB
1.20 µV
Antenna terminals
75
Ω (unbalanced)
Preset station
FM 20 stations
AM 15 stations
I AM Tuner Section
Frequency range
Frequency range
522 to 1629 kHz (9 kHz step)
520 to 1630 kHz (10 kHz step)
Sensitivity
S/N 20 dB (at 999 kHz)
1000 µV/m
SA-PM46E
SA-PM46EG
SA-PM46EF
Colour
(K)... Black Type
(K)... Black Type
I Cassette Deck Section
Track system
Track system
4-track, 2-channel
Heads
Record/playback
Solid permoy head
Erasure
Double gap ferrite head
Motor
DC servo motor
Recording system
AC bias 100 kHz
Erase system
AC erase 100 kHz
Tape speed
4.8 cm/s
Over frequency response (+3, -6 dB) at DECK OUT
Normal
35 Hz to 14 kHz
S/N RATIO
50 dB (A weighted)
Wow and flutter
0.08% (WRMS)
Fast-forward and rewind time
Approx. 120 seconds with C-60
cassette tape
I CD Section
Disc played [8 cm or 12 cm]
(1) CD-Audio (CD-DA)
(2) CD-R/RW (CD-DA, MP3 formatted disc)
(3) MP3
Sampling frequency
CD
44.1 kHz
MP3
32 kHz, 44.1 kHz, 48 kHz
Bit rate
CD Stereo System
Specification
ORDER NO. MD0802012CE
MP3
32 kbps to 384 kbps
Decoding
16/20/24 bit linear
Pickup
Wavelength
785 nm
Beam source
Semiconductor laser
Laser power
CLASS 1
Audio output (Disc)
Number of channels
2 Channel
Frequency response
20 Hz to 20 kHz (+1, -2 dB)
Wow and flutter
Below measurable limit
Digital filter
8 fs
D/A converter
MASH (1 bit DAC)
I USB Section
Playable USB Storage Media
1.
HDD
2.
USB MP3 player/Digital audio player
3.
USB Thumbdrives
Supported audio file format
MP3
USB memory port
Maximum current
500 mA
Bit rate
MP3
32 kbps to 320 kbps
Audio output (MP3)
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 Deck
7
5
Handling the Lead free Solder
8
6
Accessories
9
7
Operation Procedures
10
8
Self diagnosis and special mode setting
12
9
Assembling and Disassembling
20
10 Service Position
39
11 Procedure for Checking Operation of Individual Parts of Deck
Mechanism Unit
43
Number of channels
2 channel
Frequency response (MP3)
20 Hz to 20 kHz
I General
Power supply
AC 230 V, 50 Hz
Power consumption
63 W
Dimensions (W x H x D)
164 mm x 227 mm x 314 mm
Mass
3.4 kg
Operating temperature range
0 to +40°C
Operating humidity range
35 to 80 % RH (no condensation)
Power
consumption
in
standby
mode
0.6 W (approx.)
Notes :
1. Specifications are subject to change without notices. Mass and
dimensions are approximate.
dimensions are approximate.
2. Total harmonic distortion is measured by the digital spectrum
analyzer.
analyzer.
I System : SC-PM46E-K
Music center: SA-PM46E-K
Speaker: SB-PM46EG-K
I System : SC-PM46EG-K
Music center: SA-PM46EG-K
Speaker: SB-PM46EG-K
I System : SC-PM46EF-K
Music center: SA-PM46EF-K
Speaker: SB-PM46EG-K
I System : SC-PM46EG-S
Music center: SA-PM46EG-K
Speaker: SB-PM46EG-S
12 Measurement And Adjustments
45
13 Voltage Measurement & Waveform Chart
47
14 Wiring Connection Diagram
53
15 Block Diagram
55
16 Notes of Schematic Diagram
59
17 Schematic Diagram
61
18 Printed Circuit Board Diagrams
71
19 Illustration of IC’s, Transistors and Diodes
75
20 Terminal Function of IC’s
76
21 Exploded Views
79
22 Replacement Parts List
83
CONTENTS
Page
Page
2
SA-PM46E / SA-PM46EG / SA-PM46EF
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
.
1.1.2. LEAKAGE CURRENT HOT CHECK (See Figure 1.)
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-PM46E / SA-PM46EG / SA-PM46EF
1.2. Before Repair and Adjustment
Disconnect AC power, discharge Power Supply Capacitors C501, C502, C602, C910, C911, C915 and C923 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 230V, 50 Hz in NO SIGNAL mode (volume min) should be ~150 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 partsshould be replaced with manufacturer’s
specified parts to prevent shock, fire or other hazards. Do not modify the original designwithout permission of manufacturer.
specified parts to prevent shock, fire or other hazards. Do not modify the original designwithout permission of manufacturer.
Table 1
Reference No.
Part No.
Part Name & Description
Remarks
A2
K2CQ2CA00007
AC CORD
[M]E/EG
A2
K2CQ2CA00002
AC CORD
[M]EF
F1
K5D631BLA012
FUSE
[M]
JK600
K2AA2B000017
JK AC INLET
[M]
T600
G4CYAYY0 0137
SUB TRANSFORMER
[M]
T601
G4CYAYY0 0139
MAIN TRANSFORMER
[M]
L600
G0B371HA0005
LINE FILTER
[M]
Z600
ERZV10V511CS
ZENER
[M]
RL600
K6B1AEA00015
POWER RELAY
[M]
FP352
K5G502A00039
FUSE PROTECTOR
[M]
FP601
K5G502A00039
FUSE PROTECTOR
[M]
FP950
K5G102AA0002
FUSE PROTECTOR
[M]
R441
ERD2FCVG330T
RESISTOR (33 1/4W)
[M]
R608
ERD2FCVG120T
RESISTOR (12 1/4W)
[M]
R753
D0AF100JA039
RESISTOR (10 1/2W)
[M]
27
RKSV0037G-K
REAR CABINET
[M]
PCB4
REPX0669A
TRANSFORMER P.C.B.
[M] (RTL)
301
RAE0165Z-V
TRAVERSE UNIT (W/O SERVO P.C.B)
[M] (RTL)
4
SA-PM46E / SA-PM46EG / SA-PM46EF