Panasonic SA-PT70EB User manual

© Panasonic Corporation 2009. All rights reserved.
Unauthorized copying and distribution is a violation
of law.
PSG0909001CE
DVD Home Theater Sound System
Model No. SA-PT70EB
SA-PT70EG
SA-PT70EP
Product Color: (K)...Black Type
(S)...Silver Type (EG/EP)
TABLE OF CONTENTS PAGE PAGE
1 Safety Precautions----------------------------------------------- 3
1.1. GENERAL GUIDELINES-------------------------------- 3
1.2. Before Repair and Adjustment------------------------- 3
1.3. Protection Circuitry---------------------------------------- 4
1.4. Safety Parts Information--------------------------------- 4
1.5. Caution for AC Cord (For EB only)-------------------- 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
5.2. Main Unit Key Button Operations--------------------15
5.3. Speaker Connection-------------------------------------15
5.4. Using the VIERA Link “HDAVI Control™”---------- 16
5.5. Disc Information------------------------------------------18
6 Self-Diagnosis and Special Mode Setting -------------- 20
Note: Please refer to the original service manual for:
ODVD Mechanism Unit (DLS6E), Order No. PSG0909002AE
OSpeaker system SB-PT70EG-K/S, Order No. PSG0909003CE

2
6.1. Cold-Start---------------------------------------------------20
6.2. Service Mode Table--------------------------------------20
6.3. Self-Diagnosis Mode ------------------------------------26
6.4. DVD Self Diagnostic Function-Error Code---------27
6.5. Sales Demonstration Lock Function ----------------30
6.6. Firmware Version-Up Information--------------------31
7 Troubleshooting Guide----------------------------------------34
7.1. Troubleshooting Guide for F61 and/or F76--------34
7.2. Basic Troubleshooting Guide for Traverse
Unit (DVD Module P.C.B.)------------------------------38
7.3. Basic Troubleshooting Guide for HDMI AV
output--------------------------------------------------------39
8 Disassembly and Assembly Instructions---------------41
8.1. Disassembly Flow Chart--------------------------------42
8.2. Main Components and P.C.B. Locations-----------43
8.3. Disassembly of Top Cabinet---------------------------44
8.4. Disassembly of Scart P.C.B.---------------------------44
8.5. Disassembly of Rear Panel----------------------------45
8.6. Disassembly of DVD Mechanism Unit
(DLS6E) ----------------------------------------------------45
8.7. Disassembly of DVD Module P.C.B.-----------------47
8.8. Disassembly of SMPS P.C.B.-------------------------48
8.9. Replacement of Switching Regulator IC
(IC5701) ----------------------------------------------------49
8.10. Replacement of Diode (D5802) ----------------------49
8.11. Disassembly of Main/D-Amp P.C.B.-----------------50
8.12. Replacement of Digital Amplifier IC (IC403/
IC404/IC405)----------------------------------------------52
8.13. Disassembly of Front Panel Assembly -------------53
8.14. Disassembly of FL P.C.B.------------------------------54
8.15. Disassembly of Volume Button P.C.B.--------------55
8.16. Disassembly of Power Button P.C.B.----------------56
8.17. Replacement of DVD Lid Assembly-----------------57
9 Assembling and Disassembling of Traverse Unit----60
9.1. Disassembly of Traverse Unit-------------------------60
9.2. Assembly of Traverse Unit-----------------------------61
10 Service Position-------------------------------------------------62
10.1. Checking & Repairing Main/D-Amp P.C.B. &
Scart P.C.B.------------------------------------------------62
10.2. Checking & Repairing of SMPS P.C.B.-------------62
10.3. Checking & Repairing of FL P.C.B.------------------63
10.4. Checking & Repairing of DVD Module P.C.B.-----63
11 Voltage & Waveform Chart-----------------------------------66
11.1. DVD Module P.C.B. (1/4)-------------------------------66
11.2. DVD Module P.C.B. (2/4)-------------------------------67
11.3. DVD Module P.C.B. (3/4)-------------------------------68
11.4. DVD Module P.C.B. (4/4)-------------------------------68
11.5. Main P.C.B. (1/3) -----------------------------------------69
11.6. Main P.C.B. (2/3) -----------------------------------------70
11.7. Main P.C.B. (3/3) -----------------------------------------71
11.8. FL P.C.B. ---------------------------------------------------72
11.9. SMPS P.C.B. ----------------------------------------------72
11.10. Scart P.C.B.------------------------------------------------73
11.11. Waveform Table (1/3) -----------------------------------74
11.12. Waveform Table (2/3) -----------------------------------75
11.13. Waveform Table (3/3) -----------------------------------76
12 Illustration of ICs, Transistor and Diode ----------------77
13 Overall Simplified Block Diagram -------------------------79
14 Block Diagram ---------------------------------------------------80
14.1. DVD(Servo)------------------------------------------------80
14.2. DVD(Audio/Video) ---------------------------------------81
14.3. DVD(UP-CON) ------------------------------------------- 82
14.4. System Control------------------------------------------- 83
14.5. Analog Audio---------------------------------------------- 84
14.6. Digital Audio----------------------------------------------- 85
14.7. Analog Video---------------------------------------------- 86
14.8. Power Supply--------------------------------------------- 87
15 Wiring Connection Diagram -------------------------------- 89
16 Schematic Diagram Notes----------------------------------- 91
17 Schematic Diagram-------------------------------------------- 93
17.1. DVD Module Circuit------------------------------------- 93
17.2. Main/D-Amp Circuit ------------------------------------- 98
17.3. FL, Volume Button & Power Button Circuit-------104
17.4. Scart Circuit----------------------------------------------105
17.5. SMPS Circuit---------------------------------------------106
18 Printed Circuit Board-----------------------------------------108
18.1. DVD Module P.C.B. ------------------------------------108
18.2. Main/D-Amp P.C.B.-------------------------------------109
18.3. FL, Volume Button, Power Button & Scart
P.C.B.------------------------------------------------------ 111
18.4. SMPS P.C.B.---------------------------------------------112
19 Terminal Function of ICs------------------------------------113
19.1. IC200 (RFKWMPT70EGK): IC
MICROPROCESSOR ---------------------------------113
19.2. IC901(C0HBB0000057): IC FL Driver-------------113
20 Exploded View and Replacement Parts List----------115
20.1. Exploded View and Mechanical Replacement
Part List ---------------------------------------------------115
20.2. Electrical Replacement Part List--------------------119

3
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, C5702, C5703, C5704, C5706, C5708) 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 ~ 500 mA (EG/EP).
Current consumption at AC 240 V, 50 Hz in NO SIGNAL mode volume minimal should be ~ 500 mA (EB).
1.2.1. Caution for fuse replacement

4
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, 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.
Safety Ref. No. Part No. Part Name & Description Remarks
9 RGRX0073A-A1 REAR PANEL
20 RKMX0151-K TOP CABINET EB/EG/EP-K
20 RKMX0151-S TOP CABINET EG/EP-S
401 RAEX0017Z-V TRAVERSE UNIT
A2 K2CQ2CA00007 AC CORD EG/EP-K/S
A2 K2CZ3YY00005 AC CORD EB-K
A3 RQTX1013-D O/I BOOK (Ge/Fr/It) EG-K/S
A3 RQTX1014-H O/I BOOK (Du/Sw/Da/Sp) EG-K/S
A3 RQTX1019-B O/I BOOK (En) EB-K
A3 RQTX1024-Z O/I BOOK (En/Cz/Po/Hu) EP-K/S
PCB4 REPX0767A SMPS P.C.B. (RTL)
DZ5701 ERZV10V511CS ZNR
L5701 ELF17N007A LINE FILTER
L5702 ELF18N006A LINE FILTER
T2900 G4D1A0000118 TRANSFORMER
T5701 ETS35BC2T6AD SWITCHING TRANSFORMER
T5751 ETS19AB2A6AG SWITCHING TRANSFORMER
PC5702 B3PBA0000454 PHOTO COUPLER
PC5720 B3PBA0000454 PHOTO COUPLER
PC5799 B3PBA0000454 PHOTO COUPLER
RY5701 K6B1AEA00003 RELAY
F1 K5D202BNA005 FUSE
FP2901 K5H1022A0011 PROTECTOR
IP100 K5H302100004 PROTECTOR
TH5702 D4CAA5R10001 THERMISTOR
P5701 K2AA2B000011 AC INLET
C5700 F1BAF2220023 2200pF
C5701 ECQU2A104MLC 0.1uF
C5702 ECQU2A104MLC 0.1uF
C5703 ECQU2A104MLC 0.1uF
C5704 F1BAF1020020 1000pF
C5706 F1BAF1020020 1000pF
C5708 F1BAF1020020 1000pF

5
1.5. Caution for AC Cord (For EB only)

6
2Warning
2.1. Prevention of Electrostatic Discharge (ESD) to Electrostatic Sensitive
(ES) Devices
Some semiconductor (solid state) devices can be damaged easily by static electricity. Such components commonly are called Elec-
trostatically 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 electrostatic 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 alumi-
num foil, to prevent electrostatic charge build up 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 compara-
ble 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) suf-
ficient to damage an ES device).

7
2.2. Precaution of Laser Diode
Caution:
This product utilizes a laser diode with the unit turned “on”, invisible laser radiation is emitted from the pickup lens.
Wavelength: 650 nm (DVD)/790 nm (CD)
Maximum output radiation power from pickup: 100 µW/VDE
Laser radiation from the pickup unit is safety level, but be sure the followings:
1. Do not disassemble the pickup unit, since radiation from exposed laser diode is dangerous.
2. Do not adjust the variable resistor on the pickup unit. It was already adjusted.
3. Do not look at the focus lens using optical instruments.
4. Recommend not to look at pickup lens for a long time.
ACHTUNG:
Dieses Produkt enthält eine Laserdiode. Im eingeschalteten Zustand wird unsichtbare Laserstrahlung von der Lasereinheit
adgestrahit.
Wellenlänge: 650 nm (DVD)/790 nm (CD)
Maximale Strahlungsleistung der Lasereinhelt: 100 µW/VDE
Die strahlungan der Lasereinheit ist ungefährlich, wenn folgende Punkte beachtet werden:
1. Die Lasereinheit nicht zerlegen, da die Strahlung an der freigelegten Laserdiode gefährlich ist.
2. Den werksseitig justierten Einstellregler der Lasereinheit nicht verstellen.
3. Nicht mit optischen Instrumenten in die Fokussierlinse blicken.
4. Nicht über längere Zeit in die Fokussierlinse blicken.

8
2.3. Service caution based on Legal restrictions
2.3.1. 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
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%
The letter of “PbF” is printed either foil side or components side on the PCB using the lead free solder.
(See right figure)

9
2.4. Handling Precautions for Traverse Unit
The laser diode in the optical pickup unit may break down due to static electricity of clothes or human body. Special care must be
taken avoid caution to electrostatic breakdown when servicing and handling the laser diode in the traverse unit.
2.4.1. Cautions to Be Taken in Handling the Optical Pickup Unit
The laser diode in the optical pickup unit may be damaged due to electrostatic discharge generating from clothes or human body.
Special care must be taken avoid caution to electrostatic discharge damage when servicing the laser diode.
1. Do not give a considerable shock to the optical pickup unit as it has an extremely high-precise structure.
2. To prevent the laser diode from the electrostatic discharge damage, the flexible cable of the optical pickup unit removed
should be short-circuited with a short pin or a clip.
3. The flexible cable may be cut off if an excessive force is applied to it. Use caution when handling the flexible cable.
4. The antistatic FPC is connected to the new optical pickup unit. After replacing the optical pickup unit and connecting the flexi-
ble cable, cut off the antistatic FPC.
Figure 1
2.4.2. Grounding for electrostatic breakdown prevention
Some devices such as the DVD player use the optical pickup (laser diode) and the optical pickup will be damaged by static electric-
ity in the working environment. Proceed servicing works under the working environment where grounding works is completed.
2.4.2.1. Worktable grounding
1. Put a conductive material (sheet) or iron sheet on the area where the optical pickup is placed, and ground the sheet.

10
2.4.2.2. Human body grounding
1. Use the anti-static wrist strap to discharge the static electricity form your body.
Figure 2

11
3 Service Navigation
3.1. Service Information
This service manual contains technical information which will allow service personnel’s to understand and service this model.
Please place orders using the parts list and not the drawing reference numbers.
If the circuit is changed or modified, this information will be followed by supplement service manual to be filed with original service
manual.
•DVD Mechanism Unit (DLS6E):
1) This model uses DVD Mechanism Unit (DLS6E).
•Printed Circuit boards:
1) The following category are supplied as an assembled module.
• DVD Module P.C.B. (RFKBX0762A)
•Micro-processor & EEPROM IC:
1) The following components are supplied as an assembled part.
• Micro-processor IC, IC200 (RFKWMPT70EGK)
• EEPROM IC, IC201 (RFKWEPT70EGK)

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4 Specifications
Main unit SA-PT70EB/EG/EP
OGENERAL
Power supply: AC 220 V to 240 V, 50 Hz
Power consumption: This unit 47 W
Power consumption in standby mode: approx. 0.48 W
Dimensions (W×H×D): 360 mm×58 mm×239 mm
Mass: This unit 2 kg
Operating temperature range: 0 °C to +40 °C
Operating humidity range: 35 % to 80 % RH
(no condensation)
OAMPLIFIER SECTION
RMS Output Power: Dolby Digital Mode
Front Ch: 55 W per channel (5 Ω), 1 kHz, 10% THD
Surround Ch: 55 W per channel (5 Ω), 1 kHz, 10% THD
Center Ch: 55 W per channel (5 Ω), 1 kHz, 10% THD
Subwoofer Ch: 55 W per channel (5 Ω), 100 Hz, 10% THD
Total RMS Dolby Digital mode power: 330 W
OFM TUNER, TERMINALS SECTION
Preset Memory: FM 30 stations
Frequency Modulation (FM)
Frequency range: 87.50 MHz-108.00 MHz (50-kHz step)
Antenna terminals: 75 Ω(unbalanced)
Music Port (Front)
Sensitivity 100mV, 6.8 kΩ
Terminal Stereo, 3.5 mm jack
ODISC SECTION
Discs played (8 cm or 12 cm):
(1) DVD (DVD-Video, DivX*5, 6)
(2) DVD-R (DVD-Video, DVD-VR, MP3*2, 5, JPEG*4, 5, MPEG4*5,
7, DivX*5, 6)
(3) DVD-R DL (DVD-Video, DVD-VR, DivX*5, 6)
(4) DVD-RW (DVD-Video, DVD-VR, MP3*2, 5, JPEG*4, 5,
MPEG4*5, 7, DivX*5, 6)
(5) +R/+RW (Video)
(6) +R DL (Video)
(7) CD, CD-R/RW (CD-DA, Video CD, SVCD*1, MP3*2, 5, WMA*3,
5, JPEG*4, 5, MPEG4*5, 7, DivX*5, 6)
*1 Conforming to IEC62107
*2 MPEG-1 Layer 3, MPEG-2 Layer 3
*3 Windows Media Audio Ver.9.0 L3
ONot compatible with Multiple Bit Rate (MBR)
*4 Exif Ver 2.1 JPEG Baseline files
OPicture resolution: between 160 x 120 and 6144 x 4096 pix-
els (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,
picture and video contents and groups: 4000 audio, picture
and video contents and 255 groups. (Excluding Root Folder)
*6 Plays DivX®video.
*7 MPEG4 data recorded with the Panasonic SD multi cameras
or DVD video recorders.
OConforming to SD VIDEO specifications (ASF standard)/
MPEG4 (Simple Profile) video system/G.726 audio system.
Pick up
Wavelength (DVD/CD): 650/790 nm
Laser power (DVD/CD): CLASS 1M/CLASS 1M
Audio output (Disc)
Number of channels: 5.1 ch (FL, FR, C, SL, SR, SW)
OVIDEO SECTION
Video system: PAL625/50, PAL525/60, NTSC
Composite video output
Output level: 1 Vp-p (75 Ω)
Terminal: Scart jack (1 system)
Component video output
R output level: 0.7 Vp-p (75 Ω)
G output level: 0.7 Vp-p (75 Ω)
B output level: 0.7 Vp-p (75 Ω)
Terminal: Scart jack (1 system)
S-video output
Y output level: 1 Vp-p (75 Ω)
C output level: PAL; 0.3 Vp-p (75 Ω)
NTSC; 0.286 Vp-p (75 Ω)
Terminal: Scart jack (1 system)
HDMI AV output
Terminal: 19-pin type A connector
HDAVI Control: This unit supports “HDAVI Control 4” function.
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).
Refer to their respective original service manuals for *1.

13

14
5 Location of Controls and Components
5.1. Remote Control Key Button Operations

15
5.2. Main Unit Key Button Operations
5.3. Speaker Connection

16
5.4. Using the VIERA Link “HDAVI Control™”

17

18
5.5. Disc Information
5.5.1. Disc Playability (Media)

19
5.5.2. File Extension Type Support (WMA/MP3/JPEG/MPEG4/DivX)

20
6 Self-Diagnosis and Special Mode Setting
6.1. Cold-Start
Here is the procedure to carry out cold-start or initialize to shipping mode.
1. Unplug AC power cord
2. Press & hold [POWER] button
3. Plug AC power cord while [POWER] button being pressed
FL Display will show “_ _ _ _ _ _ _ _”
4. Release [POWER] button
6.2. Service Mode Table
By pressing various button combinations on the main unit and remote control unit, you can activate the various service modes for
checking.
Special Note:
• Due to the limitations of the no. characters that can be shown on the FL Display, the “FL Display” button on the remote control
unit can be used to show the two display pages. (Display 1 / Display 2).
• Refer to Section 5.1 for the section on “Remote Control Key Buttons Operations”.