SA-PMX5EG, SC-PMX5EE-S - Panasonic Audio Service Manual (repair manual)

PSG1203010CE

Product Color:   (S)...Silver Type

PAGE

PAGE

1 Safety Precautions----------------------------------------------- 3

1.1. General Guidelines---------------------------------------- 3
1.2. Before Repair and Adjustment ------------------------- 4
1.3. Protection Circuitry ---------------------------------------- 4
1.4. Caution For Fuse Replacement------------------------ 4
1.5. Safety Part Information----------------------------------- 5

2 Warning -------------------------------------------------------------- 6

2.1. Prevention of Electro Static Discharge (ESD)

to Electrostaticy Sensitive (ES) Devices---------- 6

2.2. Precaution of Laser Diode------------------------------- 7
2.3. Service caution based on Legal restrictions -------- 8
2.4. Handling Precaution for Traverse --------------------- 9

3 Service Navigation ---------------------------------------------- 11

3.1. Service Information -------------------------------------- 11

4 Specifications ---------------------------------------------------- 12
5 General/Introduction------------------------------------------- 13

5.1. CD playback operations -------------------------------- 13
5.2. iPod/iPhone playback operations -------------------- 14

6 Location of Controls and Components------------------ 15

6.1. Main Unit & Remote Control Key Button

Operations ------------------------------------------------- 15

7 Instation Instructions -------------------------------------- 16

7.1. Connections ----------------------------------------------- 16

8 Service Mode ----------------------------------------------------- 17

8.1. Self Diagnostic Mode ----------------------------------- 17
8.2. Self Diagnostic Function Error Code ---------------- 18

Notes: Please refer to the Original Service Manual for :
O CD Mechanism Unit (BRS11C), Order No. PSG1201019AE
O Speaker system SB-PMX5EG-K, Order No. PSG1203060CE

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8.3. Doctor Mode Table--------------------------------------- 19

9 Disassembly and Assembly Instructions --------------- 25

9.1. Disassembly flow chart --------------------------------- 26
9.2. Types of Screws ------------------------------------------ 26
9.3. Main Parts Location Diagram ------------------------- 27
9.4. Disassembly of Top Cabinet Block ------------------ 28
9.5. Disassembly of Headphone P.C.B. ------------------ 29
9.6. Disassembly of iPod P.C.B.---------------------------- 31
9.7. Disassembly of iPhone Docking Unit --------------- 32
9.8. Disassembly of iPod Lid -------------------------------- 33
9.9. Disassembly of Front Panel Block ------------------- 36

9.10. Disassembly of Panel P.C.B. and Remote

Sensor P.C.B. --------------------------------------------- 38

9.11. Disassembly of USB P.C.B. --------------------------- 40

9.12. Disassembly of CD Lid---------------------------------- 41
9.13. Replacement of Bottom Ornament ------------------ 42
9.14. Disassembly of Volume Knob Cover ---------------- 43
9.15. Disassembly of SMPS P.C.B. ------------------------- 44
9.16. Replacement of Diode (D5802) ---------------------- 45
9.17. Replacement of Power Amp IC (IC5701) ---------- 47
9.18. Disassembly of Main P.C.B. --------------------------- 49
9.19. Replacement of Digital Amplifier IC (IC5300) ----- 50
9.20. Disassembly of Inner Chassis ------------------------ 53
9.21. Disassembly of CD Mechanism Unit  --------------- 55
9.22. Replacement of Traverse Unit ------------------------ 56
9.23. Disassembly of Rear Cabinet Block ----------------- 64
9.24. Disassembly of Tuner P.C.B. -------------------------- 65

10 Service Position ------------------------------------------------- 66

10.1. Checking and Repairing of Panel P.C.B.  ---------- 66
10.2. Checking and Repairing of SMPS P.C.B.  --------- 66
10.3. Checking and Repairing of Main P.C.B. (Side

A) ------------------------------------------------------------ 67

10.4. Checking and Repairing of Main P.C.B. (Side

B) ------------------------------------------------------------ 69

10.5. Checking and Repairing of CD Servo P.C.B. ----- 71

11 Block Diagram --------------------------------------------------- 73

11.1. SERVO & SYSTEM CONTROL BLOCK

DIAGRAM -------------------------------------------------- 73

11.2. IC TERMINAL CHART---------------------------------- 74
11.3. AUDIO BLOCK DIAGRAM ---------------------------- 75
11.4. POWER SUPPLY (1/2) BLOCK DIAGRAM ------- 76
11.5. POWER SUPPLY (2/2) BLOCK DIAGRAM ------- 77

12 Wiring Connection Diagram --------------------------------- 78
13 Schematic Diagram--------------------------------------------- 79

13.1. Schematic Diagram Notes ----------------------------- 79
13.2. CD SERVO CIRCUIT (1/2) ---------------------------- 81
13.3. CD SERVO CIRCUIT (2/2) ---------------------------- 82
13.4. MAIN CIRCUIT (1/4) ------------------------------------ 83
13.5. MAIN CIRCUIT (2/4) ------------------------------------ 84
13.6. MAIN CIRCUIT (3/4) ------------------------------------ 85
13.7. MAIN CIRCUIT (4/4) ------------------------------------ 86
13.8. TUNER & iPod CIRCUIT ------------------------------- 87
13.9. PANEL, REMOTE SENSOR, USB &

HEADPHONE CIRCUIT -------------------------------- 88

13.10. SMPS CIRCUIT (1/2) ----------------------------------- 89

13.11. SMPS CIRCUIT (2/2) ----------------------------------- 90

14 Printed Circuit Board ------------------------------------------ 91

14.1. CD SERVO P.C.B. --------------------------------------- 91
14.2. MAIN P.C.B. (Side A)------------------------------------ 92
14.3. MAIN P.C.B. (Side B)------------------------------------ 93
14.4. TUNER & iPod P.C.B.----------------------------------- 94

14.5. PANEL, REMOTE SENSOR, USB &

HEADPHONE P.C.B. ----------------------------------- 95

14.6. SMPS P.C.B.---------------------------------------------- 96

15 Appendix Information of Schematic Diagram -------- 97

15.1. Voltage Measurement & Waveform Chart --------- 97
15.2. Illustration of IC’s, Transistors and Diodes ------- 104
15.3. Terminal Function of IC’s ----------------------------- 105

16 Exploded View and Replacement Parts List---------- 107

16.1. Exploded View and Mechanical replacement

Parts List -------------------------------------------------- 107

16.2. Electrical Replacement Parts List ------------------ 111

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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, see to it that all the protective devices such as insulation barriers, insulation papers shields are properly

installed.

3. After servicing, carry out the following leakage current checks to prevent the customer from being exposed to shock hazards.

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 1M

Ω and 5.2MΩ. When the exposed metal does not have a return path to the chas-

sis, 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. 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

4

Disconnect AC power, discharge unit AC Capacitors as such C5700, C5702, C5703, C5705, and C5706 through a 10W, 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 at AC 220V - 240V, at 50Hz in NO SIGNAL mode (at volume min in FM Tuner mode) should be ~200 mA.

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.