Panasonic SA-PT750PC User manual

lGENERAL
Power Supply:
A
C 120 V, 60 Hz
Power Consumption: 131 W
Dimensions (W×H×D): 430×75×424 mm
(16-15/16”×2-15/16”×16-11/16”)
Mass: Main unit 5 kg (11.02 Ibs)
Operating Temperature Range: +5°C to +35°C (+41°F to
+95°F)
Operating Humidity Range: 5% to 90% RH (no
condensation)
lAMPLIFIER SECTION
RMS Output Power: Dolby Digital Mode
lTotal RMS Dolby Digital mode power:
1000 W
At 1 kHz and total harmonic of 10%
lFront Ch: 125 W / Channel (3 Ω)
lCenter Ch: 250 W / Channel (6 Ω)
lSurround Ch: 125 W / Channel (3 Ω)
At 100 Hz and total harmonic of 10%
lSubwoofer Ch: 250 W / Channel (6 Ω)
FTC Output Power: Dolby Digital Mode
lTotal FTC Dolby Digital mode power:
428 W
At 120 Hz - 20 kHz and total harmonic of 1%
lFront Ch: 63 W / Channel (3 Ω)
lCenter Ch: 113 W / Channel (6Ω)
©2007 Matsushita Electric Industrial Co., Ltd. All
rights reserved. Unauthorized copying and
distribution is a violation of law.
SA-PT750P
SA-PT750PC
Colour
(K).......................Black Type
lSurround Ch: 34 W / Channel (3Ω)
At 45 Hz - 120 Hz and total harmonic of 1%
lSubwoofer Ch: 121 W / Channel (6Ω)
lFM/AM TUNER, TERMINALS SECTION
Preset Memory: FM 30 stations
AM / MW 30 stations
Frequency Modulation (FM)
Frequency range: 87.9-107.9 MHz
(200-kHz step)
87.5-108.0 MHz
(100-kHz step)
Sensitivity: 2.5 µV (IHF)
S/N 26 dB: 2.2 µV
Antenna terminals: 75 Ω(unbalanced)
Amplitude Modulation (AM/MW):
Frequency range: 520-1710 kHz (10-kHz step)
AM Sensitivity S/N 20 dB at
1000 kHz: 560 µV/m
Phone Jack:
Terminal: Stereo, 3.5 mm (1/8”) jack
Music Port (Front):
Sensitivity: 100 mV, 1.2 kΩ
Terminal (Input): Stereo, 3.5 mm (1/8”) jack
lDISC SECTION
Discs played [8 cm (3”) or 12 cm (5”)]:
DVD Home Theater Sound System
Specifications
ORDER NO. MD0702001CE
A6

(1) DVD (DVD-Video)
(2) DVD-RAM [DVD-VR, MP3 (*2, 5), JPEG (*4, 5)]
(3) DVD-R [DVD-Video, DVD-VR, MP3 (*2, 5), JPEG (*4, 5)]
(4) DVD-R DL (DVD-Video, DVD-VR)
(5) DVD-RW [DVD-Video, DVD-VR, MP3 (*2, 5), JPEG (*4, 5)]
(6) +R, +RW (Video)
(7) +R DL (Video)
(8) CD, CD-R/RW [CD-DA, Video CD, SVCD (*1), MP3 (*2, 5),
WMA (*3, 5), JPEG (*4, 5), HighMAT Level 2 (Audio and
Image)]
*1 Conforming to IEC62107
*2 MPEG-1 Layer 3, MPEG-2 Layer 3
*3 Windows Media Audio Ver.9.0 L3
lNot compatible with Multiple Bit Rate (MBR)
*4 Exif Ver 2.1 JPEG Baseline files
lPicture resolution: between 160 x 120 and 6144 x 4096
pixels (Sub sampling is 4:0:0, 4:2:0, 4:2:2 or 4:4:4).
Extremely long and narrow pictures may not be displayed.
*5 The total combined maximum number of recognizable audio
and picture contents and groups: 4000 audio and picture
contents and 400 groups
Pick Up:
Wavelength:
lCD: 785 nm
lDVD: 662 nm
Laser power:
lCD / DVD: (P) CLASS I / CLASS II
lCD / DVD: (PC) CLASS 1M / CLASS 1
Audio Output (Disc):
Number of channels: 5.1 ch (FL, FR, C, SL, SR,
SW)
lVIDEO SECTION
V
ideo System: NTSC
Composite Video Output:
lOutput level: 1 Vp-p (75 Ω)
lTerminal: Pin jack (1 system)
Component Video Output (480p/480i):
lY output level: 1 Vp-p (75 Ω)
lPBoutput level: 0.7 Vp-p (75 Ω)
lPRoutput level: 0.7 Vp-p (75 Ω)
lTerminal: Pin jack (Y: green, PB: blue,
PR: red) (1 system)
HDMI AV Output:
lTerminal: Type A connector (19-pin),
CEC Ver.1.3a
Power Consumption in Standby Mode:
approx. 0.5 W
Note:
1. Specifications are subject to change without notice.
Mass and dimensions are approximate.
2. Total harmonic distortion is measured by the digital spectrum
analyzer.
Solder:
This model uses lead free solder (PbF).
Mechanism:
This model uses RC1U (Rotary tray) mechanism.
Refer to the respective original service manuals for *1, *2, *3,
*4, *5, *6, *7.
2
SA-PT750P / SA-PT750PC

1 Safety Precautions 5
1.1. GENERAL GUIDELINES 5
1.2. Before Repair and Adjustment 5
1.3. Protection Circuitry 6
1.4. Safety Parts Information 6
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. Wireless Surround 16
7.4. Using the EZ Sync HDAVI Control 17
7.5. Using the XMｮSatellite Radio 18
7.6. Using the Music Port 19
7.7. About iPod 20
7.8. Disc Information 22
8 New Features 24
8.1. About HDMI 24
8.2. Wireless Features 26
9 Self-Diagnosis and Special Mode Setting 33
9.1. Service Mode Summary Table 33
9.2. Service Mode Table (Main Unit) 33
9.3. Wireless Service Mode Summary Table 43
9.4. Service Mode Table (Wireless) 44
9.5. DVD Self Diagnostic Function-Error Code 46
9.6. Sales Demonstration Lock Function 50
9.7. Service Precautions 51
10 Assembling and Disassembling 52
10.1. Disassembly Flow Chart 54
10.2. Main Components and P.C.B. Locations 55
10.3. Disassembly of Top Cabinet 56
10.4. Disassembly of Tray Lid Assembly 56
10.5. Disassembly of Front Panel 56
10.6. Disassembly of Panel P.C.B. & Key P.C.B. 57
10.7. Dissassembly of Tray Base Assembly 57
10.8. Disassembly of Mechanism Base Assembly 58
10.9. Disassembly of Rear Panel 58
10.10. Disassembly of XM Module P.C.B. 59
10.11. Disassembly of Wireless Adapter P.C.B. 59
10.12. Disassembly of Tray P.C.B. 60
10.13. Disassembly of D-Amp P.C.B 60
10.14. Disassembly of Digital Amp IC (IC5000) 61
10.15. Disassembly of DVD Module P.C.B. 61
10.16. Disassembly of Main P.C.B. 62
10.17. Disassembly of Regulator IC (IC2903) 63
10.18. Disassembly of SMPS & AC-Inlet P.C.B. 63
10.19. Disassembly of D-Port P.C.B. 64
10.20. Disassembly of Switch Regulator IC (IC5701) 64
10.21. Disassembly of Regulator Diode (D5803) 65
10.22. Disassembly of Regulator Diodes (D5801 & D5802) 65
10.23. Disassembly of Regulator Diode (D5702) 66
10.24. Disassembly of Tray Guide (L) & Tray Guide (R) 66
10.25. Disassembly of Rotary Tray 66
10.26. Disassembly of Open Lock Gear 67
10.27. Disassembly of Close Lock Gear 67
10.28. Disassembly of Tray Motor P.C.B. 68
10.29. Disassembly of Sensor P.C.B. 68
10.30. Disassembly of Traverse Unit 68
10.31. Disassembly of Pulley Gear 69
10.32. Disassembly of Loading Motor P.C.B. 69
10.33. Disassembly of Drive Gear (A) & Drive Gear (B) 70
10.34. Disassembly of Magnet Holder, Washer, Magnet &
Clamper 70
10.35. Disassembly of Support Piece, Change Lever, Slide Plate
(L) & Slide Plate (R) 71
10.36. Disassembly of Cam Gear 72
10.37. Assembly of Tray Base Assembly 72
11 Service Fixture and Tools 73
12 Service Positions 73
12.1. Checking & Repair XM Module P.C.B. 73
12.2. Checking & Repair D-Port P.C.B. 73
12.3. Checking & Repair Panel P.C.B. & Key P.C.B. 73
CONTENTS
Page Page
3
SA-PT750P / SA-PT750PC

12.4. Checking & Repair Main P.C.B. 74
12.5. Checking & Repair SMPS P.C.B. 75
12.6. Checking & Repair D-Amp P.C.B. 75
12.7. Checking & Repair DVD Module P.C.B. 75
13 Measurements and Adjustments 77
13.1. Service Tools and Equipment 77
13.2. Important points in adjustment 77
13.3. Storing and handling of test discs 77
13.4. Optical adjustment 78
14 Abbreviations 79
15 Voltage and Waveform Chart 81
15.1. DVD Module P.C.B. 81
15.2. Main P.C.B. 83
15.3. D-Amp P.C.B. 84
15.4. SMPS P.C.B. 84
15.5. XM Module P.C.B. 85
15.6. Panel P.C.B. 85
15.7. D-Port, Tray, Loading Motor, Tray Motor & Sensor P.C.B.
85
15.8. Waveform Chart 86
16 Illustration of IC's, Transistors and Diodes 88
17 Wiring Connection Diagram 89
18 Block Diagram 91
18.1. System Control 91
18.2. DVD (Servo) 92
18.3. DVD (Video/Audio) 93
18.4. DVD Interface 94
18.5. Audio 95
18.6. Audio Digital Amp 96
18.7. Power 97
19 Schematic Diagram Notes 99
20 Schematic Diagram 101
20.1. DVD Module (DV5/HDMI) Circuit 101
20.2. XM Module & Main Circuit 106
20.3. D-Port & Panel Circuit 111
20.4. D-Amp & SMPS Circuit 113
20.5. Tray, Key, Wireless Adapter, AC-Inlet & Loading Motor
Circuit 117
20.6. Tray Motor, Sensor & Optical Pickup Unit Circuit 119
21 Printed Circuit Board 121
21.1. DVD Module P.C.B. 121
21.2. XM Module, D-Port & AC-Inlet P.C.B. 122
21.3. Main P.C.B. 123
21.4. Panel, Key & Wireless Adapter P.C.B. 124
21.5. D-Amp P.C.B. 125
21.6. SMPS P.C.B. 126
21.7. Tray, Loading Motor, Tray Motor & Sensor P.C.B. 127
22 Basic Troubleshooting Guide 129
22.1. Basic Troubleshooting Guide for Traverse Unit (DVD
Module P.C.B) 129
22.2. Basic Troubleshooting Guide for HDMI AV output 130
23 Overall Block Diagram for PT750 132
23.1. SC-PT750 Main Circuit Block 132
23.2. SC-PT750 SMPS Circuit Block 133
24 Terminal Function of ICs 134
24.1. IC2001 (C2CBYY000442): System Control IC 134
25 Exploded Views 135
25.1. Cabinet Parts Location 137
25.2. Packaging 139
26 Replacement Parts List 140
26.1. Component Parts List 141
4
SA-PT750P / SA-PT750PC

1 Safety Precautions
1.1. GENERAL GUIDELINES
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.
1.1.1. 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 chassis, 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.
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
1.2. Before Repair and Adjustment
Disconnect AC power to discharge unit AC Capacitors as such C5700, C5701, C5703, C5704, C5705 through a 10 Ω,10W
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 120 V, 60 Hz in NO SIGNAL mode volume minimal should be ~ 900 mA.
5
SA-PT750P / SA-PT750PC

1.2.1. Caution for fuse replacement
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. Safety Parts 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 & 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.
Table 1
Reference No. Part No. Part Name & Description Remarks
PC5701 B3PBA0000402 PHOTO COUPLER [M]
PC5702 B3PBA0000402 PHOTO COUPLER [M]
PC5720 B3PBA0000402 PHOTO COUPLER [M]
PC5799 B3PBA0000402 PHOTO COUPLER [M]
D5701 B0FBAR000041 DIODE [M]
DZ5701 ERZV10V511CS ZENER [M]
TH5701 D4CAA5R10001 THERMISTOR [M]
TH5860 D4CC11040013 THERMISTOR [M]
L2101 J0JBC0000015 CHIP INDUCTOR [M]
L2201 J0JBC0000015 CHIP INDUCTOR [M]
L2802 J0JBC0000015 CHIP INDUCTOR [M]
L2803 J0JBC0000015 CHIP INDUCTOR [M]
L2804 J0JBC0000015 CHIP INDUCTOR [M]
L2805 J0JBC0000015 CHIP INDUCTOR [M]
L5001 G0B9R5K00003 CHOKE COIL [M]
L5002 G0B9R5K00003 CHOKE COIL [M]
L5201 G0B9R5K00003 CHOKE COIL [M]
L5301 G0B9R5K00003 CHOKE COIL [M]
L5500 J0JKB0000020 EMI BEAD CORE [M]
L5501 J0JKB0000020 EMI BEAD CORE [M]
L5702 ELF22V035B COIL [M]
L5721 J0JKB0000020 EMI BEAD CORE [M]
T2900 G4D1A0000117 TRANSFORMER [M]
T5701 ETS42BM15GAD TRANSFORMER [M]
T5751 ETS19AB236AG TRANSFORMER [M]
F1 K5D802APA008 FUSE [M]
6
SA-PT750P / SA-PT750PC

Reference No. Part No. Part Name & Description Remarks
FP2902 K5H5012A0010 FUSE PROTECTOR [M]
P5701 K2AB2B000010 JACK [M]
A2 K2CB2CB00018 AC CORD [M]
C5700 F1BAF1020020 1000P [M]
C5701 ECQU2A334MLA 0.33 [M]
C5703 ECQU2A224MLC 0.22 [M]
C5704 F1BAF1020020 1000P [M]
C5705 F1BAF1020020 1000P [M]
7
SA-PT750P / SA-PT750PC

2 Prevention of Electro Static Discharge (ESD) to
Electrostatically Sensitive (ES) Devices
Some semiconductor (solid state) devices can be damaged easily by static electricity. Such components commonly are called
Electrostatically Sensitive (ES) Devices. Examples of typical ES devices are integrated circuits and some field-effect transistors and
semiconductor "chip" components. The following techniques should be used to help reduce the incidence of component damage
caused by electro static 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
aluminum 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 comparable
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)
sufficient to damage an ES device).
8
SA-PT750P / SA-PT750PC

3 Precaution of Laser Diode
CAUTION:
This unit utilizes a Class I/Class II (P), Class 1M/Class 1 (PC) laser.
Invisible laser radiation is emitted from the optical pickup lens.
Wavelength: 662nm(DVD)/785nm(CD).
Maximum output radiation power from pickup: 100µW/VDE
When the unit is turned on:
1. Do not look directly into the pick up lens.
2. Do not use optical instruments to look at the pick up lens.
3. Do not adjust the preset variable resistor on the pickup lens.
4. Do not disassemble the optical pick up unit.
5. If the optical pick up is replaced, use the manufacturer’s specified replacement pick up only.
6. Use of control or adjustments or performance of procedures other than those specified herein may result in hazardous
radiation exposure.
9
SA-PT750P / SA-PT750PC

4 About Lead Free Solder (PbF)
4.1. Service caution based on legal restrictions
4.1.1. General description about Lead Free Solder (PbF)
The lead free solder has been used in the mounting process of all electrical components on the printed circuit boards used for this
equipment in considering the globally environmental conservation.
The normal solder is the alloy of tin (Sn) and lead (Pb). On the other hand, the lead free solder is the alloy mainly consists of tin
(Sn), silver (Ag) and Copper (Cu), and the melting point of the lead free solder is higher approx.30 degrees C (86°F) more than that
of the normal solder.
Definition of PCB Lead Free Solder being used
The letter of “PbF” is printed either foil side or components side on the PCB using the lead free solder.
(See right figure)
Service caution for repair work using Lead Free Solder (PbF)
· The lead free solder has to be used when repairing the equipment for which the lead free solder is used.
(Definition: The letter of “PbF” is printed on the PCB using the lead free solder.)
· To put lead free solder, it should be well molten and mixed with the original lead free solder.
· Remove the remaining lead free solder on the PCB cleanly for soldering of the new IC.
· Since the melting point of the lead free solder is higher than that of the normal lead solder, it takes the longer time to melt
the lead free solder.
· Use the soldering iron (more than 70W) equipped with the temperature control after setting the temperature at 350±30
degrees C (662±86°F).
Recommended Lead Free Solder (Service Parts Route.)
· The following 3 types of lead free solder are available through the service parts route.
RFKZ03D01K-----------(0.3mm 100g Reel)
RFKZ06D01K-----------(0.6mm 100g Reel)
RFKZ10D01K-----------(1.0mm 100g Reel)
Note
* Ingredient: tin (Sn), 96.5%, silver (Ag) 3.0%, Copper (Cu) 0.5%, Cobalt (Co) / Germanium (Ge) 0.1 to 0.3%
10
SA-PT750P / SA-PT750PC