Panasonic SA-BTT770EG / SA-BTT770EP / SA-BTT775EB / SA-BTT775EE / SA-BTT775GN / SC-BTT775EEK Service Manual ▷ View online
9
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: 790 nm (CDs), 655 nm (DVDs), 405 nm (BDs)
Maximum output radiation power from pickup: 100
Wavelength: 790 nm (CDs), 655 nm (DVDs), 405 nm (BDs)
Maximum output radiation power from pickup: 100
µ
W/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.
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: 790 nm (CDs), 655 nm (DVDs), 405 nm (BDs)
Maximale Strahlungsleistung der Lasereinhelt: 100
adgestrahit.
Wellenlänge: 790 nm (CDs), 655 nm (DVDs), 405 nm (BDs)
Maximale Strahlungsleistung der Lasereinhelt: 100
µ
W/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.
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.
10
2.3.
Service caution based on Legal restrictions
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.
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
(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
• 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)
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%
2.4.
Handling Precaution 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.
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.
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
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.
The letter of “PbF” is printed either foil side or components side on the PCB using the lead free solder.
(See right figure)
(See right figure)
11
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.
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.
2.4.2.2.
Human body grounding
1. Use the anti-static wrist strap to discharge the static electricity form your body.
Figure 2
12
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.
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 the original ser-
vice manual.
vice manual.
• BD Mechanism Unit & Digital Circuitries:
1) This model uses BD Mechanism Unit (BRS1P).
2) This service manual does not contain the following information, due to the impossibility of servicing at
component level.
2) This service manual does not contain the following information, due to the impossibility of servicing at
component level.
O
Schematic Diagram, Block Diagram of Digital Circuitries on Digital P.C.B..
O
Replacement Parts List for individual parts of Digital Circuitries on Digital P.C.B. & Loading P.C.B..
O
Exploded View and Replacement Parts of individual parts of BD Mechanism Unit.
3) The following category are recycle module part. Please send them to Central Repair Center.
- Digital P.C.B.: RFKB4689RT (BTT770EG/EP, BTT775GN),
RFKB4689TT (BTT775EB),
RFKB4689WT (BTT775EE).
- BD Mechanism Unit: VXY2122T
- Digital P.C.B.: RFKB4689RT (BTT770EG/EP, BTT775GN),
RFKB4689TT (BTT775EB),
RFKB4689WT (BTT775EE).
- BD Mechanism Unit: VXY2122T
• WIFI P.C.B. (For SA-BTT770EB/EP, SA-BTT775EB/GN)
This service manual does not contain the following information, due to the impossibility of servicing at component level.
1. Schematic Diagram, Block Diagram and Print Circuit diagram of WIFI P.C.B..
2. Replacement Parts List for individual parts of WIFI P.C.B..
2. Replacement Parts List for individual parts of WIFI P.C.B..
• Wireless System
1) SA-BTT775GNK support to wireless surround speaker, SH-FX71GN-K
SA-BTT770EGK/EPK, SA-BTT775EBK support to
optional
wireless surround speaker, SH-FX71E-K
SA-BTT775EEK/EPK support to
optional
wireless surround speaker, SH-FX71GC-K
2) For information of wireless system, please refer to original service manual (Order No. PSG1002003CE (For SH-FX71GN/GC-K),
(Order No. PSG1002002CE (For SH-FX71E-K))
(Order No. PSG1002002CE (For SH-FX71E-K))
3.2.
Combination of Multiple Pressing on the Remote Control
Press multi-buttons (in combination) on the remote control simultaneously for operations, such as initialization on service mode, etc.
There are no multiple pressing function on the previous remote controls, thus, please be sure to use the supplied remote control.
There are no multiple pressing function on the previous remote controls, thus, please be sure to use the supplied remote control.
3.3.
Entering Special Modes with Combination of Multiple Pressing on the
Remote Control
Remote Control
Enter the following special mode by multiple pressing functions on the supplied remote control.
After entering each mode, switch to the desired menus for operation.
After entering each mode, switch to the desired menus for operation.
Click on the first or last page to see other SA-BTT770EG / SA-BTT770EP / SA-BTT775EB / SA-BTT775EE / SA-BTT775GN / SC-BTT775EEK service manuals if exist.