Panasonic SA-PMX152EG User manual

© Panasonic Corporation 2017. All rights reserved.
Unauthorized copying and distribution is a violation of
law.
PSG1703007CE
A6
CD Stereo System
Model No. SA-PMX150EG
SA-PMX150PC
SA-PMX152EG
Product Color: (S)...Silver Type
TABLE OF CONTENTS
PAGE PAGE
1 Safety Precautions----------------------------------------------- 3
1.1. General Guidelines---------------------------------------- 3
1.2. Before Repair and Adjustment ------------------------- 3
1.3. Protection Circuitry ---------------------------------------- 4
1.4. Caution For Fuse Replacement------------------------ 4
1.5. Safety Part Information----------------------------------- 4
2 Warning-------------------------------------------------------------- 5
2.1. Prevention of Electrostatic Discharge (ESD)
to Electrostatically Sensitive (ES) Devices---------- 5
2.2. Precaution of Laser Diode------------------------------- 6
2.3. Service caution based on Legal restrictions -------- 7
2.4. Handling Precaution for Traverse Unit --------------- 8
3 Service Navigation----------------------------------------------- 9
3.1. Service Information --------------------------------------- 9
3.2. Software / Firmware Update ---------------------------- 9
4 Specifications ----------------------------------------------------10
5 Location of Controls and Components------------------ 12
5.1. Main Unit & Remote Control Key Button
Operations ------------------------------------------------- 12
6 Service Mode----------------------------------------------------- 13
6.1. Service Mode Table ------------------------------------- 13
6.2. Service Mode Error Code ------------------------------ 14
6.3. Doctor Mode----------------------------------------------- 15
6.4. Sales Demonstration Lock Function Mode -------- 18
7 Troubleshooting Guide --------------------------------------- 19
8 Disassembly and Assembly Instructions--------------- 25
8.1. Disassembly flow chart --------------------------------- 26
8.2. Type of screws-------------------------------------------- 26
8.3. Main Parts Location Diagram ------------------------- 27
8.4. Disassembly of Top Cabinet--------------------------- 28
8.5. Disassembly of ALLPLAY Module Block ----------- 29
8.6. Disassembly of Front Panel Unit --------------------- 30
Notes: Please refer to the Original Service Manual for :
OCD Mechanism Unit, Order No. PSG1303059AE
OSpeaker system SB-PMX100EGK, Order No. PSG1505005CE

2
8.7. Disassembly of Panel Block--------------------------- 31
8.8. Disassembly of USB P.C.B. --------------------------- 32
8.9. Disassembly of ALLPLAY Antenna P.C.B.--------- 33
8.10. Disassembly of SMPS P.C.B. ------------------------- 33
8.11. Disassembly of Main P.C.B. --------------------------- 34
8.12. Disassembly of Inner Chassis ------------------------ 34
8.13. Disassembly of Tuner P.C.B.-------------------------- 35
8.14. Disassembly of DAB P.C.B. (For PMX152
only) --------------------------------------------------------- 36
8.15. Disassembly of CD Mechanism Unit ---------------- 36
8.16. Replacement of Traverse Unit ------------------------ 37
8.17. Disassembly of Bluetooth P.C.B. --------------------- 43
8.18. Disassembly of Rear Cabinet ------------------------- 43
9 Service Position------------------------------------------------- 44
9.1. Checking of Panel, Main, SMPS, ALLPLAY
Module with Data and CD Interface P.C.B. -------- 44
10 Block Diagram --------------------------------------------------- 45
10.1. SERVO & SYSTEM CONTROL BLOCK
DIAGRAM -------------------------------------------------- 45
10.2. AUDIO BLOCK DIAGRAM ---------------------------- 46
10.3. POWER SUPPLY (1/2) BLOCK DIAGRAM ------- 47
10.4. POWER SUPPLY (2/2) BLOCK DIAGRAM ------- 48
11 Wiring Connection Diagram--------------------------------- 49
12 Schematic Diagram--------------------------------------------- 51
12.1. Schematic Diagram Notes ----------------------------- 51
12.2. MAIN (MICON) CIRCUIT------------------------------- 53
12.3. MAIN (MPORT/ADC) CIRCUIT----------------------- 54
12.4. MAIN (CD MOTOR DRIVER) CIRCUIT ------------ 55
12.5. MAIN (SUPPLY) CIRCUIT ----------------------------- 56
12.6. MAIN (DSP/DAMP/HEADPHONE) CIRCUIT ----- 57
12.7. MAIN (ALLPLAY/LAN) CIRCUIT --------------------- 58
12.8. CD INTERFACE, TUNER & USB CIRCUIT ------- 59
12.9. PANEL, IR SENSOR & HEADPHONE
CIRCUIT---------------------------------------------------- 60
12.10. SMPS CIRCUIT (1/2) ----------------------------------- 61
12.11. SMPS CIRCUIT (2/2) ----------------------------------- 62
12.12. DAB CIRCUIT--------------------------------------------- 63
13 Printed Circuit Board ------------------------------------------ 64
13.1. MAIN P.C.B. (Side A)------------------------------------ 64
13.2. MAIN P.C.B. (Side B)------------------------------------ 65
13.3. CD INTERFACE, TUNER, USB &
HEADPHONE P.C.B.------------------------------------ 66
13.4. PANEL & IR SENSOR P.C.B. ------------------------- 67
13.5. SMPS & DAB P.C.B. ------------------------------------ 68
14 Voltage Measurement------------------------------------------ 69
14.1. MAIN P.C.B. (1/2) ---------------------------------------- 69
14.2. MAIN P.C.B. (2/2) ---------------------------------------- 70
14.3. SMPS & PANEL P.C.B. --------------------------------- 70
15 Exploded View and Replacement Parts List----------- 71
15.1. Cabinet Parts Location---------------------------------- 71
15.2. Packaging -------------------------------------------------- 72
15.3. Mechanical Replacement Parts List----------------- 73
15.4. Electrical Replacement Parts List-------------------- 75

3
1 Safety Precautions
1.1. General Guidelines
1. IMPORTANT SAFETY NOTICE
There are special components used in this equipment which are important for safety. These parts are marked by in the
Schematic Diagrams, Circuit Board Layout, Exploded Views and Replacement Parts List. It is essential that these critical parts
should be replaced with manufacturer’s specified parts to prevent X-RADIATION, shock, fire, or other hazards. Do not modify
the original design without permission of manufacturer.
2. An Isolation Transformer should always be used during the servicing of AC Adaptor whose chassis is not isolated from the AC
power line. Use a transformer of adequate power rating as this protects the technician from accidents resulting in personal
injury from electrical shocks. It will also protect AC Adaptor from being damaged by accidental shorting that may occur during
servicing.
3. 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.
4. After servicing, see to it that all the protective devices such as insulation barriers, insulation papers shields are properly
installed.
5. After servicing, make the following leakage current checks to prevent the customer 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. measure the resistance value, with an ohmmeter 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 1MΩand 5.2MΩ. When the exposed metal does not have a return path to the chas-
sis, the reading must be
1.1.2. Leakage Current Hot Check
1. Plug the AC cord directly into the AC outlet. Do not use an isolation transformer for this check.
2. Connect a 1.5kΩ, 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 1-1.
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. In case a measurement is outside of the
limits specified, there is a possibility of a shock hazard, and the equipment should be repaired and rechecked before it is
returned to the customer.
Figure. 1-1
1.2. Before Repair and Adjustment
Disconnect AC power & discharge AC Capacitors (C5700, C5701, C5702, C5704, C5705 and C5706) through a 10ohm, 1W resis-
tor to ground.
Caution : 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 during AC 240V, at 50Hz in NO SIGNAL mode (at volume minimum in FM mode) should be ~200 mA. (For
EG)
• Current consumption during AC 120V, at 60Hz in NO SIGNAL mode (at volume minimum in FM mode) should be ~200 mA. (For
PC)

4
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.
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. Caution For Fuse Replacement
1.5. 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, Exploded View & 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.
Safety Ref. No. Part No. Part Name & Description Remarks
12 RGR0474M-A REAR CABINET 150PCS
12 RGR0474M-B REAR CABINET 150EGS
12 RGR0474N-A REAR CABINET 152EGS
48 RFKKMX100EGS TOP AL ORNAMENT ASS'Y
301 TXQ0011 TRAVERSE ASS’Y (E.S.D)
A2 K2CB2YY00065 AC CORD 150PCS
A2 K2CQ2YY00107 AC CORD 150EGS, 152EGS
A3 TQBJ0992 O/I BOOK (En) 150EGS
A3 TQBJ0993 O/I BOOK (Ge/It/Fr/Du) 150EGS, 152EGS
A3 TQBJ0994 O/I BOOK (Da/Sw/Fi) 150EGS, 152EGS
A3 TQBJ0995 O/I BOOK (Po/Cz/Sp) 150EGS
A3 TQBJ0996 O/I BOOK (En/Cf) 150PCS
PCB6 TNPA6426 SMPS P.C.B (RTL) 150EGS,152EGS
PCB6 TNPA6426AB SMPS P.C.B (RTL) 150PCS
C5700 F1BAF102A216 1000pF AC250 <= Vac <315
C5701 F0CAF104A218 0.1uF AC250 <= Vac <315
C5702 F0CAF104A218 0.1uF AC250 <= Vac <315
C5704 F1BAF4710005 470pF AC250 <= Vac <315
C5705 F1BAF4710005 470pF AC250 <= Vac <315
C5706 F1BAF102A216 1000pF AC250 <= Vac <315
DZ5701 D4EAY5110006 DIODE
L5701 G0B103G00023 INDUCTOR
L5702 G0B103G00023 INDUCTOR
T5700 G4DYZ0000085 SWITCHING TRANSFORMER
PC5721 B3PBA0000579 PHOTO COUPLER
PC5723 B3PBA0000579 PHOTO COUPLER
PC5724 B3PBA0000579 PHOTO COUPLER
P5701 K2AA2B000011 AC INLET 150EGS, 152EGS
P5701 K2AB2B000007 AC INLET 150PCS
F1 K5G312YA0159 F1
R5700 ERJ12YJ125U 1.2M 1/2W
R5701 ERJ12YJ125U 1.2M 1/2W

5
2Warning
2.1. Prevention of Electrostatic Discharge (ESD) to Electrostatically Sensi-
tive (ES) Devices
Some semiconductor (solid state) devices can be damaged easily by static electricity. Such components commonly are called Elec-
trostatically Sensitive (ES) Devices.
The following techniques should be used to help reduce the incidence of component damage caused by electrostatic discharge
(ESD).
1. Immediately before handling any semiconductor component or semiconductor-equipped assembly, drain off any ESD on your
body by touching a known earth ground. Alternatively, obtain and wear a commercially available discharging ESD wrist strap,
which should be removed for potential shock reasons prior to applying power to the unit under test.
2. After removing an electrical assembly equipped with ES devices, place the assembly on a conductive surface such as alumi-
num foil, to prevent electrostatic charge buildup or exposure of the assembly.
3. Use only a grounded-tip soldering iron to solder or unsolder ES devices.
4. Use only an anti-static solder removal device. Some solder removal devices not classified as “anti-static (ESD protected)” can
generate electrical charge sufficient to damage ES devices.
5. Do not use freon-propelled chemicals. These can generate electrical charges sufficient to damage ES devices.
6. Do not remove a replacement ES device from its protective package until immediately before you are ready to install it. (Most
replacement ES devices are packaged with leads electrically shorted together by conductive foam, aluminum foil or compara-
ble conductive material).
7. Immediately before removing the protective material from the leads of a replacement ES device, touch the protective material
to the chassis or circuit assembly into which the device will be installed.
CAUTION:
Be sure no power is applied to the chassis or circuit, and observe all other safety precautions.
8. Minimize bodily motions when handling unpackaged replacement ES devices. (Otherwise harmless motion such as the
brushing together of your clothes fabric or the lifting of your foot from a carpeted floor can generate static electricity (ESD) suf-
ficient to damage an ES device).