11 Illustration of IC’s, Transistors and Diodes
12 Wiring Connection Diagram
13 Block Diagram
13.1. System Control
13.2. DVD (Servo)
13.3. DVD (Audio)
13.4. DVD (HDMI)
13.5. VIDEO
13.6. Audio
13.7. Digital Audio Amp
13.8. Power
14 Schem atic Diagram Notes
15 Schematic Diagram
15.1. DVD Module Circuit
15.2. Main Circuit
15.3. Panel Circuit
15.4. Power Button, USB Circuit
15.5. D-Amp Circuit
15.6. Power Supply Circuit
15.7. SMPS Circuit
15.8. AC Inlet, Ipod Cradle
15.9. Coprocessor Circuit
15.10. Mic Circuit
16 Prin ted Circui t Board
16.1. DVD Module P.C.B.
16.2. Main P.C.B.
16.3. Panel, Power Button, USB, Power Supply & AC Inlet
P.C.B.
16.4. D-Amp P.C.B.
39
40
40
40
42
42
43
46
46
48
49
50
50
51
51
52
55
57
59
59
60
61
62
63
64
65
66
67
69
69
74
78
79
80
82
84
86
87
88
89
89
90
91
92
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SA-PT465EE
16.5. SMPS P.C.B. 93
16.6. Ipod Cradle, Mic & Coprocessor P.C.B.
17 Expl od ed Views
17.1. Cabinet Parts Location
17.2. Packaging
94
18 Repl acement Parts List
95
95
18.1. Component Parts List
19 Schem atic Diagram for printing w ith letter size
96
97
98
113
5
SA-PT465EE
1 Notes:
—This service manual contains technical information which will allow service personnel’s to understand and service this
model.
—If the circuit is changed or modified, this information will be followed by supplement service manual to be filled with the
original service manual.
1) The base for this model is SA-PT460EB/EG-K,EG-S. You can refer to the original service manual (Order no. MD0801001CE).
As such this service manual does not contain the following information as below:-
•
• Operation Procedures
• •
•
• Self-diagnosis & Special Mode Setting
• •
•
• Assembling & Disassembling of DVD Mechanism Unit
• •
•
• Measurements & Adjustments
• •
2) Contents include for this service manual:-
•
• Safety Precautions
• •
•
• Prevention of Electrostatic Discharge (ESD)
• •
•
• Precaution of Laser Diode
• •
•
• About Lead Free Solder (PbF)
• •
•
• Handling Precautions for Traverse Unit
• •
•
• Assembling & Disassembling
• •
•
• Service Position
• •
•
• Voltage & Waveform Chart
• •
•
• Illustration of IC’s, Transistors and Diodes
• •
•
• Wiring Connection Diagram
• •
•
• Block Diagram
• •
•
• Schematic Diagram Notes
• •
•
• Schematic Diagram
• •
•
• Printed Circuit Board
• •
•
• Cabinet Exploded Views
• •
•
• Replacement Parts List
• •
6
SA-PT465EE
2 Safety Precautions
2.1. 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.
2.1.1. 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 1MΩ and 5.2M Ω .
When the exposed metal does not have a return path to the chassis, the reading must be
2.1.2. 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.
2.2. Before Repair and Adjustment
Disconnect AC power to discharge unit AC Capacitors as such C5700, C5701, C5703, C5704, C5705, C5706, C5707 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. (E/EG)
2.3. 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.
7
SA-PT465EE
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.
2.4. Safety Parts Information
Safety Parts List:
There are special components used in this equipment which are important for safety.
These parts are marked by
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.
in the Schematic Diagrams & Replacement Parts List. It is essential that these critical parts
Table 1
8
SA-PT465EE
3 Prevention of Electrostatic 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 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
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).
9
SA-PT465EE
4 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: 655 nm (DVD)/785 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.
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SA-PT465EE
5 About Lead Free Solder (PbF)
5.1. Service caution based on legal restrictions
5.1.1. 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.
* Ingredient: tin (Sn), 96.5%, silver (Ag) 3.0%, Copper (Cu) 0.5%, Cobalt (Co) / Germanium (Ge) 0.1 to 0.3%
11
SA-PT465EE
6 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.
6.1. 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 unitand connecting the flexible
cable, cut off the antistatic FPC.
6.2. 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
electricity in the working environment. Proceed servicing works under the working environment where grounding works is
completed.
6.2.1. Worktable grounding
1. Put a conductive material (sheet) or iron sheet on the area where the optical pickup is placed, and ground the sheet.
6.2.2. Human body grounding
1. Use the anti-static wrist strap to discharge the static electricity form your body.
12
SA-PT465EE
13
SA-PT465EE
7 Assembling and Disassembling
“ATTENTION SERVICER”
Be careful when disassembling and servicing.
Some chassis components may have sharp edges.
Special Note:
1. This section describes the disassembly procedures for all the major printed circuit boards and main components.
2. Before the disassembly process was carried out, do take special note that all safety precautions are to be carried out.
(Ensure that no AC power supply is connected during disassembling.)
3. For assembly after operation checks or replacement, reverse the respective procedures.
Special reassembly procedures are described only when required.
4. Do take note of the locators on each printed circuit board during reassembling procedures.
5. The Switch Regulator IC may have high temperature after prolonged use.
6. Use caution when removing the top cabinet and avoid touching heat sinks located in the unit.
7. Select items from the following index when checks or replacement are required.
•
• Disassembly of Top Cabinet
• •
•
• Disassembly of Rear Panel
• •
•
• Disassembly of DVD Mechanism Unit
• •
•
• Disassembly of Front Panel
• •
•
• Disassembly of Panel P.C.B.
• •
•
• Disassembly of Power Button P.C.B.
• •
•
• Disassembly of USB P.C.B.
• •
•
• Disassembly of Mic P.C.B.
• •
•
• Disassembly of DVD Lid
• •
•
• Disassembly of Ipod Cradle P.C.B.
• •
•
• Disassembly of AC-Inlet P.C.B.
• •
•
• Disassembly of Main P.C.B.
• •
•
• Disassembly of D-Amp P.C.B.
• •
•
• Replacement of Digital Amp IC (IC5000)
• •
•
• Replacement of Digital Amp IC (IC5200)
• •
•
• Replacement of Digital Amp IC (IC5300)
• •
•
• Replacement of Digital Amp IC (IC5400)
• •
•
• Disassembly of SMPS P.C.B.
• •
•
• Replacement of Switch Regulator IC (IC5701)
• •
•
• Replacement of Switch Regulator Diode (D5702)
• •
•
• Replacement of Regulator Diode (D5801)
• •
•
• Replacement of Regulator Diode (D5802)
• •
•
• Replacement of Regulator Diode (D5803)
• •
•
• Replacement of Power Supply P.C.B.
• •
•
• Replacement of Regulator IC (IC2903)
• •
•
• Disassembly of DVD Module P.C.B.
• •
•
• Disassembly of Coprocessor P.C.B.
• •
14
SA-PT465EE
15
SA-PT465EE
7.1. Disassembly Flow Chart
7.3. Top Cabinet
7.4. Rear Panel
7.5. DVD Mechanism
Unit
7.6. Front Panel
7.7. Panel P.C.B.
7.8. Power Button P.C.B.
7.9. USB P.C.B.
7.10. Mic P.C.B.
7.13. AC Inlet P.C.B.
7.14. Main P.C.B.
7.29. Coprocessor P.C.B.
7.15. D-Amp P.C.B.
7.16. Digital Amp IC
(IC5000)
7.17. Digital Amp IC
(IC5200)
7.18. Digital Amp IC
(IC5300)
7.19. Digital Amp IC
(IC5400)
7.20. SMPS P.C.B.
7.21 Switch Regulator IC
(IC5701)
7.11. DVD Lid
7.12. Ipod Cradle PCB
7.22. Switch Regulator
Diode (D5702)
7.23. Regulator Diode
(D5801)
7.24. Regulator Diode
(D5802)
7.25. Regulator Diode
(D5803)
7.26. Power Supply P.C.B.
7.27. Regulator IC
(IC2903)
7.28. DVD Module P.C.B.
16
7.2. Main Components and P.C.B. Locations
SA-PT465EE
17
SA-PT465EE
7.3. Disassembly of Top Cabinet
Step 1 Remove 4 screws at the sides of the top cabinet.
Step 2 Remove 3 screws at the rear of the top cabinet.
Step 3 Lift up the back part of the top cabinet and remove it in
the direction of arrows.
Step 4 Remove the wire clamper to detach the fan unit
connector (CN5501) on D-Amp P.C.B.
Step 5 Remove the rear panel.
7.5. Disassembly of DVD
Mechanism Unit
7.4. Disassembly of Rear Panel
•
• Follow (Step 1) to (Step 3) of Item 7.3.
• •
Step 1 Remove 7 screws at the rear panel.
Step 2 Remove 1 screw at the rear panel.
Step 3 Release the tab of each side of the rear panel in the
direction of arrow.
•
• Follow (Step 1) to (Step 3) of Item 7.3.
• •
Step 1 Remove 2 screws from DVD mechanism unit.
Step 2 Detach 7P FFC cable at the connector (FP8251) on
DVD Module P.C.B.
Step 3 Detach 26P FFC cable at the connector (FP8531) on
DVD Module P.C.B.
Step 4 Remove the DVD mechanism unit.
18
7.6. Disassembly of Front Panel
•
• Follow (Step 1) to (Step 3) of Item 7.3.
• •
Step 1 Detach 17P FFC cable at the connector (CN2007) on
Main P.C.B.
Step 2 Detach 4P FFC cable at the connector (CN2013) on
Main P.C.B.
Step 3 Release the hook at each side of the front panel in the
direction of arrow.
SA-PT465EE
Caution: Do not exert strong force when releasing the tabs.
Step 5 Detach the front panel slightly forward in the direction of
arrows.
Step 6 Detach 14P cable at the connector (CN6003) on Power
Supply P.C.B.
Step 7 Detach 5P USB cable at the connector (CN6401) on
USB P.C.B.
Step 8 Detach 12P Mic cable at the connector (CN7000) on
Mic P.C.B.
Step 9 Remove the front panel.
Step 4 Release the tabs at the bottom of the front panel.
Caution: Do not attempt to exert strong force when
detaching the front panel.
7.7. Disassembly of Panel P.C.B.
•
• Follow (Step 1) to (Step 3) of Item 7.3.
• •
•
• Follow (Step 1) to (Step 8) of Item 7.6.
• •
Step 1 Remove the volume knob.
19
SA-PT465EE
•
• Disassembly of FL shield plate unit.
• •
Step 2 Remove 3 screws from the FL shield plate unit.
Step 3 Remove the FL shield plate unit.
7.8. Disassembly of Power Button
P.C.B.
•
• Follow (Step 1) to (Step 3) of Item 7.3.
• •
•
• Follow (Step 1) to (Step 8) of Item 7.6.
• •
•
• Disassembly of Panel Angle.
• •
Step 1 Remove 2 screws from the panel angle.
Step 2 Remove the panel angle.
Step 3 Remove Power Button P.C.B.
Caution Note: Keep the FL shield plate unit in safe place.
Avoid denting it. Place it back during assembling.
Step 4 Remove the earth spring.
Step 5 Remove 1 screw on Panel P.C.B.
Step 6 Release the catch.
Step 7 Remove Panel P.C.B.
Caution Note: Keep the panel angle in safe place. Avoid
denting it. Place it back during assembling.
7.9. Disassembly of USB P.C.B.
•
• Follow (Step 1) to (Step 3) of Item 7.3.
• •
•
• Follow (Step 1) to (Step 9) of Item 7.6.
• •
•
• Disassembly of USB Bracket.
• •
Step 1 Remove 1 screw from the USB bracket.
Step 2 Remove the USB bracket.
Step 3 Remove the USB P.C.B.
Caution Note: Keep the earth spring in safe place. Avoid
denting it. Place it back during assembling.
20
SA-PT465EE
7.10. Disassembly of Mic P.C.B.
•
• Follow (Step 1) to (Step 3) of Item 7.3.
• •
•
• Follow (Step 1) to (Step 9) of Item 7.6.
• •
•
• Follow (Step 1) to (Step 2) of Item 7.9.
• •
•
• Disassembly of Mic fixing P.C.B
• •
•
• Step 1 Remove 1 screw on Mic fixing P.C.B.
• •
•
• Step 2 Remove the Mic fixing P.C.B.
• •
•
• Step 3 Remove Mic P.C.B.
• •
Step 4 Lift the door spring in the direction of arrow (2).
Step 5 Move the shaft of the DVD lid in the direction of arrow
(3).
Step 6 Remove the DVD lid in the direction of arrow (4).
7.11. Disassembly of DVD Lid
•
• Follow (Step 1) to (Step 3) of Item 7.3.
• •
•
• Follow (Step 1) to (Step 8) of Item 7.6.
• •
•
• Disassembly of DVD Lid Holder
• •
Step 1 Remove 1 screw from the DVD lid holder.
Step 2 Remove the DVD lid holder.
7.12. Disassembly of Ipod Cradle
P.C.B.
•
• Follow (Step 1) to (Step 3) of Item 7.3.
• •
•
• Follow (Step 1) to (Step 7) of Item 7.6.
• •
Step 1 Peel off the portion of the pana badge (paste type) with
a pen knife.
Step 2 Remove the screw for cradle.
Caution Note: Keep the DVD lid holder in safe place. Avoid
denting it. Place it back during assembling.
Step 3 Open the DVD lid in the direction of arrow (1), until it is
aligned parrallel with the front panel.
Caution Note: Keep the screw in safe place. Place it back
during assembling.
Step 3 Flip the Ipod cradle unit for 45 degree as the direction
of arrow.
21
SA-PT465EE
Step 4 Remove the connector cover.
Step 5 Use a flat head screwdriver (0.5-0.7mm) to release the
catches according to the diagram show.
7.13. Disassembly of AC Inlet P.C.B.
•
• Follow (Step 1) to (Step 3) of Item 7.3.
• •
Step 6 Remove cradle cover A as the direction of arrow.
Step 7 Remove 2 screws on the Ipod cradle P.C.B.
Step 8 Remove Ipod cradle P.C.B.
•
• Disassembly of AC Inlet Shield Plate Unit.
• •
Step 1 Remove 1 screw at the rear panel.
Step 2 Remove 2 screws from the AC Inlet shield plate unit.
Step 3 Remove the AC Inlet shield plate unit.
22
Caution Note: Keep the AC Inlet shield plate unit in safe
place. Avoid denting it. Place it back during assembling.
Step 4 Remove the D-Amp P.C.B. bracket.
Step 5 Remove AC Inlet P.C.B.
Caution Note: Keep the D-Amp P.C.B. bracket in safe
place. Avoid denting it. Place it back during assembling.
Special Note: During reassembling procedures, ensure the
P.C.B. is seated properly at the locators.
SA-PT465EE
Step 2 Remove3screwsonMainP.C.B.
Step 3 Detach 17P FFC cable at the connector (CN2007) on
the Main P.C.B.
Step 4 Detach 4P FFC cable at the connector (CN2013) on the
Main P.C.B.
Step 5 Detach 13P cable at the connector (CN2016) on the
Power Supply P.C.B.
Step 6 Detach 28P cable at the connector (CN6001) on the
Power Supply P.C.B.
Step 7 Detach 12P cable at the connector (CN7000) on the Mic
P.C.B.
7.14. Disassembly of Main P.C.B.
•
• Follow (Step 1) to (Step 3) of Item 7.3.
• •
Step 1 Remove 3 screws at the rear panel.
Step 8 Detach Main P.C.B. from the rear panel.
Step 9 Turn over Main P.C.B. to detach 17P FFC cable at the
connector (CN2009) on the Main P.C.B.
Step 10 Detach 50P FFC cable at the connector (CN2001) on
the Main P.C.B.
Step 11 Detach 22P FFC cable at the connector (CN2801) on
the Main P.C.B.
Step 12 Remove Main P.C.B.
23
SA-PT465EE
Special Note: During reassembling procedures, ensure the
P.C.B. is seated properly at the locators.
Step 6 Remove 2 screws at the rear panel.
Step 7 Release the tab of the rear panel in the direction of
arrow.
Step 8 Remove D-Amp P.C.B.
7.15. Disassembly of D-Amp P.C.B.
•
• Follow (Step 1) to (Step 3) of Item 7.3.
• •
•
• Follow (Step 1) to (Step 4) of Item 7.13.
• •
•
• Follow (Step 1) to (Step 5) of Item 7.14.
• •
Step 1 Move aside Main P.C.B. and position it according to the
diagram shown.
Step 2 Remove 2 screws on D-Amp P.C.B.
Step 3 Detach 17P cable at the connector (CN5050) on D-Amp
P.C.B.
Step 4 Detach 8P cable at the connector (CN5500) on D-Amp
P.C.B.
Step 5 Twist the wire clamper to detach 3P cable at the
connector (CN5501) on D-Amp P.C.B.
Special Note: During reassembling procedures, ensure the
P.C.B. is seated properly at the locators.
24
7.16. Replacement of Digital Amp IC
(IC5000)
•
• Follow (Step 1) to (Step 3) of Item 7.3.
• •
Step 1 Cut the 5 connecting points as indicated in the diagram.
Step 2 Detach the marked portion from the bottom chassis.
SA-PT465EE
Step 4 Remove 1 screw from the TR spring.
Step 5 Remove the TR spring in the direction of arrows.
Step 6 Remove the digital amp IC ( IC5000) from the heatsink
unit A.
Caution: Handle the heatsink unit A with caution due to its
high temperature after prolonged use. Touching it may
lead to injuries.
Step 3 Desolder pins of the digital amp IC (IC5000) on the
reverse side of D-Amp P.C.B.
Note: Refer to the diagrams of D-Amp P.C.B. (Item 8.4.) for
location of the part.
7.16.1. Assembly of the Digital Amp IC
(IC5000)
Step 1 Fix the digital amp IC (IC5000) to the heatsink unit A.
25
SA-PT465EE
Step 2 Screw the TR spring to the heatsink unit A.
Step 3 Use a blower to remove the minute particles that might
be caused after the process of the screwing TR spring to the
heatsink unit A.
Step 4 Solder pins of the digital amp IC (IC5000) on the
reverse side of D-Amp P.C.B.
7.17. Replacement of Digital Amp IC
(IC5200)
•
• Follow (Step 1) to (Step 3) of Item 7.3.
• •
•
• Follow (Step 1) to (Step 2) of Item 7.16.
• •
Step 1 Desolder pins of the digital amp IC (IC5200) on the
reverse side of D-Amp P.C.B.
Special Note: Ensure pins of the digital amp IC (IC5000) are
properly seated and soldered on D-Amp P.C.B.
Step 5 Position the bottom chassis portion in to the curves
according to the diagram shown. (Rotate the part at 180
degrees as compared to its original position)
Step 6 Screw the portion to the bottom chassis.
Step 2 Remove 1 screw.
Step 3 Remove the TR spring in the direction of arrows.
Step 4 Remove the digital amp IC ( IC5200) from the heatsink
unit A.
Caution: Handle the heatsink unit A with caution due to its
high temperature after prolonged use. Touching it may
lead to injuries.
26
SA-PT465EE
Note: Refer to the diagrams of D-Amp P.C.B. (Item 8.4.) for
location of the part.
7.17.1. Assembly of the Digital Amp IC
(IC5200)
Step 1 Fix the digital amp IC (IC5200) to the heatsink unit A.
Step 2 Screw the TR spring to the heatsink unit A.
Step 3 Use a blower to remove the minute particles that might
be caused after the process of the screwing TR spring to the
heatsink unit A.
Step 4 Solder pins of the digital amp IC (IC5200) on the
reverse side of D-Amp P.C.B.
Special Note: Ensure pins of the digital amp IC (IC5200) are
properly seated and soldered on D-Amp P.C.B.
Step 5 Follow (Step 5) to (Step 6) of Item 2.17.1
7.18. Replacement of Digital Amp IC
(IC5300)
•
• Follow (Step 1) to (Step 3) of Item 7.3.
• •
•
• Follow (Step 1) to (Step 2) of Item 7.16.
• •
Step 1 Desolder pins of the digital amp IC (IC5300) on the
reverse side of D-Amp P.C.B.
27
SA-PT465EE
Step 2 Remove 1 screw.
Step 3 Remove the TR spring in the direction of arrows.
Step 4 Remove the digital amp IC ( IC5300) from the heatsink
unit A.
Caution: Handle the heatsink unit A with caution due to its
high temperature after prolonged use. Touching it may
lead to injuries.
Step 2 Screw the TR spring to the heatsink unit A.
Step 3 Use a blower to remove the minute particles that might
be caused after the process of the screwing TR spring to the
heatsink unit A.
Note: Refer to the diagrams of D-Amp P.C.B. (Item 8.4.) for
location of the part.
7.18.1. Assembly of Digital Amp IC
(IC5300)
Step 4 Solder pins of the digital amp IC (IC5300) on the
reverse side of D-Amp P.C.B.
Special Note: Ensure pins of the digital amp IC (IC5300) are
properly seated and soldered on D-Amp P.C.B.
Step 5 Follow (Step 5) to (Step 6) of Item 2.17.1
Step 1 Fix the digital amp IC (IC5300) to the heatsink unit A.
28
7.19. Replacement of Digital Amp IC
(IC5400)
•
• Follow (Step 1) to (Step 3) of Item 7.3.
• •
•
• Follow (Step 1) to (Step 2) of Item 7.16.
• •
Step 1 Desolder pins of the digital amp IC (IC5400) on the
reverse side of D-Amp P.C.B.
SA-PT465EE
Step 2 Remove 1 screw.
Step 3 Remove the TR spring in the direction of arrows.
Step 4 Remove the digital amp IC ( IC5400) from the heatsink
unit A.
Caution: Handle the heatsink unit A with caution due to its
high temperature after prolonged use. Touching it may
lead to injuries.
Note: Refer to the diagrams of D-Amp P.C.B. (Item 8.4.) for
location of the part.
7.19.1. Assembly of Digital Amp IC
(IC5400)
Step 1 Fix the digital amp IC (IC5400) to the heatsink unit A.
Step 2 Screw the TR spring to the heatsink unit A.
Step 3 Use a blower to remove the minute particles that might
be caused after the process of the screwing TR spring to the
heatsink unit A.
29
SA-PT465EE
diagram shown.
Step 2 Remove 4 screws on SMPS P.C.B.
Step 3 Detach 8P cable at the connector (CN5500) on D-Amp
P.C.B.
Step 4 Detach 11P cable at the connector (CN5802) on SMPS
P.C.B.
Step 5 Remove 8P cable (SMPS P.C.B. to D-Amp P.C.B.) from
the big wire holder.
Step 6 Remove SMPS P.C.B.
Step 4 Solder pins of the digital amp IC (IC5400) on the
reverse side of D-Amp P.C.B.
Special Note: Ensure pins of the digital amp IC (IC5400) are
properly seated and soldered on D-Amp P.C.B.
Step 5 Follow (Step 5) to (Step 6) of Item 2.17.1
Special Note: During reassembling procedures, ensure the
P.C.B. is seated properly at the locators.
7.20. Disassembly of SMPS P.C.B.
•
• Follow (Step 1) to (Step 3) of Item 7.3.
• •
•
• Follow (Step 1) to (Step 3) of Item 7.6.
• •
•
• Follow (Step 1) to (Step 8) of Item 7.14.
• •
•
• Follow (Step 1) to (Step 6) of Item 7.19.
• •
Step 1 Move aside Main P.C.B. and position it according to the
7.21. Replacement of Switch
Regulator IC (IC5701)
•
• Follow (Step 1) to (Step 3) of Item 7.3.
• •
•
• Follow (Step 1) to (Step7) of Item 7.14.
• •
•
• Follow (Step 1) to (Step 6) of Item 7.20.
• •
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