Read Panasonic SA-PT250EE Service Manual online
2
Prevention of Electro Static Discharge (ESD) to
Electrostatically Sensitive (ES) Devices
8
3
Precaution of Laser Diode
9
4
About Lead Free Solder (PbF)
10
4.1.
Service caution based on legal restrictions
10
5
Handling Precautions for Traverse Unit
11
5.1.
Cautions to Be Taken in Handling the Optical Pickup Unit
11
5.2.
Grounding for electrostatic breakdown prevention
11
6
Accessories
13
7
Operation Procedures
14
7.1.
Remote Control Key Buttons Operations
14
7.2.
Main Unit Key Buttons Operations
15
7.3.
Music Port Connection and Operation
16
7.4.
USB Connection and Operation
17
7.5.
Audio & Video Connections
18
7.6.
Disc Information
19
8
Self-Diagnosis and Special Mode Setting
21
8.1.
Service Mode Summary Table
21
8.2.
Service Mode Table
21
8.3.
DVD Self Diagnostic Function-Error Code
29
8.4.
Sales Demonstration Lock Function
32
8.5.
Service Precautions
33
9
Assembling and Disassembling
34
9.1.
Disassembly Flow Chart
35
9.2.
Main Components and P.C.B. Locations
36
9.3.
Disassembly of Top Cabinet
37
9.4.
Disassembly of the DVD Lid (When taking out disc
manually)
37
9.5.
Disassembly of Front Panel
38
9.6.
Disassembly of Volume P.C.B.
38
9.7.
Disassembly of Mic P.C.B.
39
9.8.
Disassembly of Panel P.C.B.
39
9.9.
Disassembly of USB P.C.B.
40
9.10. Disassembly of Scart P.C.B.
40
9.11. Disassembly of Rear Panel
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9.12. Disassembly of DVD Mechanism Unit
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9.13. Disassembly of DVD Module P.C.B.
41
9.14. Disassembly of Main P.C.B.
41
9.15. Replacement of Regulator IC (IC2903)
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9.16. Disassembly of D-Amp P.C.B.
42
9.17. Replacement of Digital Amp IC (IC5000)
43
9.18. Disassembly of SMPS & AC-Inlet P.C.B.
44
9.19. Replacement of Switch Regulator IC/Diode
(IC5701/D5702)
44
9.20. Replacement of Regulator Diode (D5801/D5802)
45
9.21. Replacement of Regulator Diode (D5803)
45
10 Assembly and Disassembly of DVD Mechanism Unit
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10.1. Disassembly Procedure
47
11 Service Position
52
11.1. Checking & Repairing Scart P.C.B.
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11.2. Checking & Repairing Panel P.C.B.
52
11.3. Checking & Repairing Mic P.C.B.
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11.4. Checking & Repairing Main P.C.B.
52
11.5. Checking & Repairing D-Amp P.C.B.
53
11.6. Checking & Repairing DVD Module P.C.B.
53
11.7. Checking & Repairing SMPS P.C.B.
54
12 Measurements and Adjustments
55
12.1. Service Tools and Equipment
55
12.2. Important points in adjustment
55
12.3. Storing and handling of test discs
55
12.4. Optical adjustment
56
13 Abbreviations
57
14 Voltage and Waveform Chart
59
14.1. DVD Module P.C.B.
59
14.2. Main P.C.B.
60
14.3. D-Amp P.C.B.
61
14.4. SMPS P.C.B.
61
14.5. Panel & Tray Loading P.C.B.
62
14.6. Scart P.C.B.
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14.7. Mic P.C.B.
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14.8. Waveform Chart
63
15 Illustration of IC’s, Transistors and Diodes
65
16 Wiring Connection Diagram
67
17 Block Diagram
69
17.1. System Control
69
17.2. DVD (Servo)
70
17.3. DVD (Audio)
71
17.4. DVD (Video)
72
17.5. Audio
73
17.6. Audio Digital Amp
74
17.7. Power
75
18 Schematic Diagram Notes
77
19 Schematic Diagram
79
19.1. DVD Module Circuit
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19.2. Main, Panel & Mic Circuit
83
19.3. D-Amp & SMPS Circuit
89
19.4. Scart Circuit
93
19.5. Volume, USB, AC-Inlet, Tray Loading & Optical Pickup
Unit Circuit
94
20 Printed Circuit Board
97
20.1. DVD Module P.C.B.
97
20.2. Main P.C.B.
98
20.3. Panel, Volume & USB P.C.B.
99
20.4. D-Amp P.C.B.
100
20.5. SMPS P.C.B.
101
20.6. Mic, AC-Inlet, Scart, & Tray Loading P.C.B.
102
21 Basic Troubleshooting Guide
103
21.1. Basic Troubleshooting Guide for Traverse Unit (DVD
Module P.C.B)
103
22 Overall Block Diagram for PT250
104
22.1. SC-PT250 Simplified Block
104
22.2. SC-PT250 Power Block
105
22.3. SC-PT250 SMPS Block
106
23 Terminal Function of ICs
107
23.1. IC2001 (C2CBYY000440): System Control IC
107
24 Exploded Views
108
24.1. Cabinet Parts Location
109
4
SA-PT250EE
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