DOWNLOAD Panasonic SA-PT870EE / SC-PT870EE Service Manual ↓ Size: 8.78 MB | Pages: 127 in PDF or view online for FREE

PSG0905018CE

Product Color:  (K)...Black Type

PAGE

PAGE

1 Safety Precautions----------------------------------------------- 4

1.1. GENERAL GUIDELINES -------------------------------- 4
1.2. Before Repair and Adjustment ------------------------- 4
1.3. Protection Circuitry ---------------------------------------- 5
1.4. Safety Parts Information --------------------------------- 5

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

2.1. Prevention of Electrostatic Discharge (ESD)

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

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

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

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

4 Specifications ---------------------------------------------------- 12
5 Location of Controls and Components------------------ 14

5.1. Remote Control Key Button Operations------------ 14

2

5.2. Main Unit Key Button Operations -------------------- 15
5.3. Using the VIERA Link “HDAVI Control”------------- 16
5.4. Using of iPod ---------------------------------------------- 18
5.5. USB Connection and Operations -------------------- 20
5.6. Speaker Connection ------------------------------------- 21
5.7. Disc Information ------------------------------------------ 22

6 Self-Diagnosis and Special Mode Setting -------------- 24

6.1. Service Mode Summary Table ------------------------ 24
6.2. Service Mode Table-------------------------------------- 24
6.3. DVD Self Diagnostic Function-Error Code--------- 31
6.4. Sales Demonstration Lock Function ---------------- 35
6.5. Firmware Version-Up Information -------------------- 36

7 Troubleshooting Guide---------------------------------------- 38

7.1. Troubleshooting Guide for F61 and/or F76 -------- 38
7.2. Basic Troubleshooting Guide for Traverse

Unit (DVD Module P.C.B.)------------------------------ 45

7.3. Basic Troubleshooting Guide for HDMI AV

Output ------------------------------------------------------- 46

8 Service Fixture & Tools --------------------------------------- 48

8.1. Service Tools and Equipment ------------------------- 48

9 Disassembly and Assembly Instructions --------------- 49

9.1. Disassembly Flow Chart-------------------------------- 51
9.2. Main Components and P.C.B. Locations ----------- 52
9.3. Disassembly of Top Cabinet--------------------------- 53
9.4. Disassembly of Rear Panel---------------------------- 53
9.5. Disassembly of DVD Mechanism Unit (DLS6)---- 53
9.6. Disassembly of Front Panel Assembly ------------- 54
9.7. Disassembly of Panel, Power Button P.C.B. ------ 55
9.8. Disassembly of Auto Setup Speaker P.C.B. ------- 56
9.9. Disassembly of Mic P.C.B. ----------------------------- 56

9.10. Disassembly of DVD Lid-------------------------------- 57

9.11. Disassembly of iPod P.C.B.---------------------------- 57

9.12. Disassembly of AC Inlet P.C.B. ----------------------- 58
9.13. Disassembly of Main P.C.B. --------------------------- 59
9.14. Disassembly of Co-processor P.C.B.---------------- 61
9.15. Disassembly of D-Amp P.C.B. ------------------------ 61
9.16. Replacement of Audio Digital Power Amp IC

(IC5000) ---------------------------------------------------- 62

9.17. Replacement of Audio Digital Power Amp IC

(IC5200) ---------------------------------------------------- 63

9.18. Replacement of Audio Digital Power Amp IC

(IC5300) ---------------------------------------------------- 65

9.19. Replacement of Audio Digital Power Amp IC

(IC5400) ---------------------------------------------------- 66

9.20. Disassembly of SMPS P.C.B. ------------------------- 67
9.21. Replacement of Switching Regulator IC

(IC2903) ---------------------------------------------------- 68

9.22. Replacement of Switching Regulator IC

(IC5701) ---------------------------------------------------- 69

9.23. Replacement of Rectifier Diode (D5702)----------- 70
9.24. Replacement of Regulator Diode (D5801)--------- 71
9.25. Replacement of Regulator Diode (D5802)--------- 72
9.26. Replacement of Regulator Diode (D5803)--------- 73
9.27. Disassembly of DVD Module P.C.B.----------------- 74
9.28. Disassembly of Wireless Adapter P.C.B.----------- 75
9.29. Assembling and Disassembling of Traverse

Unit----------------------------------------------------------- 76

10 Service Position ------------------------------------------------- 79

10.1. Checking & Servicing Main P.C.B. ------------------- 79
10.2. Checking & Servicing D-Amp P.C.B. ---------------- 79
10.3. Checking & Servicing SMPS & AC Inlet P.C.B. --- 82

10.4. Checking & Servicing DVD Module P.C.B. -------- 84

11 Voltage & Waveform Chart ---------------------------------- 87

11.1. DVD Module P.C.B. (1/4) ------------------------------ 87
11.2. DVD Module P.C.B. (2/4) ------------------------------ 88
11.3. DVD Module P.C.B. (3/4) ------------------------------ 89
11.4. DVD Module P.C.B. (4/4) ------------------------------ 90
11.5. Main P.C.B. (1/3)----------------------------------------- 91
11.6. Main P.C.B. (2/3)----------------------------------------- 92
11.7. Main P.C.B. (3/3)----------------------------------------- 93
11.8. Panel P.C.B.----------------------------------------------- 93
11.9. D-Amp P.C.B. (1/2) -------------------------------------- 94

11.10. D-Amp P.C.B. (2/2) -------------------------------------- 95

11.11. Auto Setup Speaker P.C.B.---------------------------- 95

11.12. SMPS P.C.B.---------------------------------------------- 96
11.13. Co-processor P.C.B. ------------------------------------ 96
11.14. Mic P.C.B.-------------------------------------------------- 97
11.15. Waveform Table (1/5) ----------------------------------- 98
11.16. Waveform Table (2/5) ----------------------------------- 99
11.17. Waveform Table (3/5) ---------------------------------- 100
11.18. Waveform Table (4/5) ---------------------------------- 101
11.19. Waveform Table (5/5) ---------------------------------- 102

12 Illustration of ICs, Transistor and Diode --------------- 103
13 Overall Simplified Block Diagram------------------------ 104
14 Block Diagram -------------------------------------------------- 105

14.1. System Control  ----------------------------------------- 105
14.2. DVD (SERVO)------------------------------------------- 106
14.3. DVD (Audio)---------------------------------------------- 107
14.4. DVD (HDMI)---------------------------------------------- 108
14.5. Video------------------------------------------------------- 109
14.6. Audio------------------------------------------------------- 110
14.7. Digital Audio Amp--------------------------------------- 111
14.8. Power ------------------------------------------------------ 112

15 Wiring Connection Diagram ------------------------------- 113
16 Schematic Diagram Notes ---------------------------------- 114
17 Schematic Diagram ------------------------------------------- 116

17.1. DVD Module Circuit ------------------------------------ 116
17.2. Main Circuit----------------------------------------------- 121
17.3. Panel Circuit --------------------------------------------- 125
17.4. Auto Setup Speaker & Power Button Circuit----- 126
17.5. D-Amp Circuit-------------------------------------------- 127
17.6. SMPS Circuit--------------------------------------------- 129
17.7. AC Inlet, iPod & Wireless Adapter Circuit -------- 131
17.8. Mic Circuit ------------------------------------------------ 132
17.9. Co-processor Circuit (For reference only) -------- 133

18 Printed Circuit Board----------------------------------------- 134

18.1. DVD Module P.C.B. ------------------------------------ 134
18.2. Main P.C.B.----------------------------------------------- 135
18.3. Panel, Auto Setup Speaker, Power Button &

Mic P.C.B.------------------------------------------------- 136

18.4. D-Amp P.C.B. -------------------------------------------- 137
18.5. SMPS P.C.B.--------------------------------------------- 138
18.6. AC Inlet, iPod, Wireless Adapter P.C.B. & Co-

processor P.C.B. (For reference only) ------------- 139

19 Terminal Function of ICs ------------------------------------ 140

19.1. IC2001 (RFKWMPT470EB): IC MICRO

PROCESSOR ------------------------------------------- 140

19.2. IC6901(C0HBB0000057): IC FL Driver ----------- 140

20 Exploded View and Replacement Parts List---------- 142

20.1. Exploded View and Mechanical Replacement

Part List --------------------------------------------------- 142

20.2. Electrical Replacement Part List -------------------- 146

3

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 5.2M

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.

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

Disconnect AC power to discharge unit AC Capacitors as such (C5700, C5701, C5703, C5704, C5705, C5712) through a 10 

Ω

, 10

W resistor 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 230 V, 50 Hz in NO SIGNAL mode volume minimal should be ~ 600 mA.

4

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.

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.