SA-MAX4000PN, SA-MAX4000PS - Panasonic Audio Service Manual (repair manual)

PSG1504011CE

Product Color:  (K)...Black 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. Power Supply using SMPS Module------------------- 5
1.5. Safety Parts Information  -------------------------------- 5

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

2.1. Prevention of Electrostatic Discharge (ESD)

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

2.2. Precaution of Laser Diode------------------------------- 6
2.3. General description about Lead Free Solder

(PbF)---------------------------------------------------------- 7

2.4. Handling Precautions for Traverse Ass’y ------------ 7
2.5. Grounding for electrostatic breakdown

prevention --------------------------------------------------- 8

3 Service Navigation ----------------------------------------------- 9

3.1. Service Information ---------------------------------------- 9
3.2. Software Update Procedure----------------------------- 9

4 Specifications ---------------------------------------------------- 10
5 Location of Controls and Components------------------ 11

5.1. Remote Control Key Button Operation ------------- 11
5.2. Main Unit Key Button Operation---------------------- 12

6 Service Mode ----------------------------------------------------- 13

6.1. Cold-Start -------------------------------------------------- 13
6.2. Sales Demonstration Lock Function ---------------- 13
6.3. Doctor Mode Table--------------------------------------- 14
6.4. Self-Diagnostic Mode ----------------------------------- 16
6.5. Self-Diagnostic Error Code Table -------------------- 16

7 Troubleshooting Guide --------------------------------------- 18
8 Disassembly and Assembly Instructions--------------- 19

O

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2

8.1. Type of Screws ------------------------------------------- 19
8.2. Disassembly Flow Chart-------------------------------- 20
8.3. Main Components and P.C.B. Locations ----------- 21
8.4. Disassembly of Top Cabinet--------------------------- 22
8.5. Disassembly of Front Panel Unit --------------------- 23
8.6. Disassembly of FL Display P.C.B. ------------------- 24
8.7. Disassembly of Illumination Jog P.C.B.------------- 24
8.8. Disassembly of BT&NFC P.C.B.---------------------- 25
8.9. Disassembly of Volume Jog P.C.B. ------------------ 25

8.10. Disassembly of USB P.C.B. --------------------------- 26

8.11. Disassembly of Mic P.C.B. ----------------------------- 26

8.12. Disassembly of DJ Cabinet Unit---------------------- 27
8.13. Disassembly of Button Left P.C.B. ------------------- 28
8.14. Disassembly of Multi Control P.C.B.----------------- 28
8.15. Disassembly of Button Right P.C.B. ----------------- 29
8.16. Disassembly of SMPS Module ----------------------- 29
8.17. Disassembly of Main P.C.B. --------------------------- 30
8.18. Disassembly of CD Mechanism Unit ---------------- 31
8.19. Disassembly of CD Interface P.C.B.----------------- 31

9 Service Position ------------------------------------------------- 32

9.1. Checking of FL Display P.C.B., Button Left

P.C.B., Button Right P.C.B., Multi Control
P.C.B. and BT&NFC P.C.B.---------------------------- 32

9.2. Checking of SMPS Module ---------------------------- 33
9.3. Checking of Main P.C.B.-------------------------------- 33

10 Block Diagram --------------------------------------------------- 35

10.1. System Control ------------------------------------------- 35
10.2. Audio -------------------------------------------------------- 39
10.3. Power Supply --------------------------------------------- 41

11 Wiring Connection Diagram --------------------------------- 43

12 Schematic Diagram--------------------------------------------- 45

12.1. Schematic Diagram Notes ----------------------------- 45
12.2. Main (CD Motor Driver) Circuit------------------------ 47
12.3. Main (USB EMMC) Circuit ----------------------------- 48
12.4. Main (SOC IO Expander) Circuit (1/2) -------------- 49
12.5. Main (SOC IO Expander) Circuit (2/2) -------------- 50
12.6. Main (Damp) Circuit (1/2) ------------------------------ 51
12.7. Main (Damp) Circuit (2/2) ------------------------------ 52
12.8. Main (Connector) Circuit (1/2) ------------------------ 53
12.9. Main (Connector) Circuit (2/2) ------------------------ 54

12.10. Main (DSP) Circuit --------------------------------------- 55

12.11. Main (Tuner AUX) Circuit ------------------------------ 56

12.12. Main (Vreg Fan) Circuit (1/3) -------------------------- 57
12.13. Main (Vreg Fan) Circuit (2/3) -------------------------- 58
12.14. Main (Vreg Fan) Circuit (3/3) -------------------------- 59
12.15. Illumination Jog and Volume Jog Circuit ----------- 60
12.16. FL Display Circuit ---------------------------------------- 61
12.17. Button Left Circuit ---------------------------------------- 62
12.18. Button Right and Multi Control Circuit -------------- 63
12.19. Mic, USB and CD Interface Circuit ------------------ 64

13 Printed Circuit Board ------------------------------------------ 65

13.1. Main P.C.B. (Side A)------------------------------------- 65
13.2. Main P.C.B. (Side B)------------------------------------- 66
13.3. FL Display, Mic and USB P.C.B.---------------------- 67
13.4. Button Left and Button Right P.C.B. ----------------- 68
13.5. Volume Jog, Illumination Jog, Multi Control

and CD Interface P.C.B. -------------------------------- 69

14 Voltage and Waveform Measurement -------------------- 71

14.1. Voltage Measurement----------------------------------- 71

15 Exploded View and Replacement Parts List ----------- 77

15.1. Cabinet Parts Location 1 ------------------------------- 77

15.2. Cabinet Parts Location 2------------------------------- 78
15.3. Cabinet Parts Location 3------------------------------- 79
15.4. Packaging ------------------------------------------------- 80
15.5. Mechanical Replacement Part List ------------------ 81
15.6. Electrical Replacement Part List --------------------- 83

3

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. 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 5.2M

Ω

.

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 0.15

μ

F 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

4

Disconnect AC power to discharge AC capacitor as indicate below diagram through a 10 

Ω

, 10 W resistor to ground.

Figure 1-2

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 120 V, 60 Hz in FM Tuner at volume minimum should be ~ 500mA (PN).
Current consumption at AC 220~240 V, 50/60 Hz in FM Tuner at volume minimum should be ~ 850mA (PS).

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.