Panasonic SA-AK770PL - Page 72

Panasonic SA-AK770PL

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14.1.2. Main P.C.B.

14.1.3. Panel P.C.B.

72

SA

-

AK

77

0PL / SA

-

AK

77

0GCP

Table of Contents

Specifications1
Table of Contents2
Before Use3
General Guidelines3
Leakage Current Cold Check3
Leakage Current Hot Check3
Safety Precautions3
- Before Repair and Adjustment4
- Protection Circuitry4
- Safety Part Information4
Electrostatically Sensitive (ES) Devices5
Prevention of Electro Static Discharge (ESD) to5
- Cautions to be Taken in Handling the Optical Pickup Unit6
- Grounding for Electrostatic Breakdown Prevention6
Handling Precautions for Traverse Unit6
Precaution of Laser Diode8
About Lead Free Solder (Pbf)9
- Service Caution Based on Legal Restrictions9
- Main Unit Key Buttons Operations10
Operation Procedures10
- Overview of Controls10
- Remote Control Key Buttons Operations11
- Note on Cds12
- Using the Music Port12
- Connecting and Playing a USB Mass Storage Class Device13
Self Diagnosis and Special Mode Setting14
- Service Mode Summary Table14
- Service Mode Table14
- Reliability Test Mode17
- Error Code Table Display19
- Error Code Table (for CD Mechanism Unit)20
- Error Code Table (for Deck Mechanism)20
- Error Code Table (for Power Supply)21
Assembling and Disassembling22
Disassembly of Front Panel Unit22
- Disassembly Flow Chart24
- Main Components and P.C.B. Location25
- Disassembly of Top Cabinet26
Follow the (Step 1) - (Step 5) of Item26
P.C.b27
Step 6 Detach 5P Wire Cable at Connector (CN1113) at USB27
Disassembly of Jupiter USB PCB28
Follow the (Step 1) - (Step 5) of Item28
P.C.b28
- Disassembly of Fan Unit29
- Disassembly of Rear Panel30
- Disassembly of Front Panel Unit31
- Isassembly of Panel P.C.B., Tact Switch P.C.B., Side Bar LED PCB31
- Disassembly of MIC P.C.B.34
- Disassembly of USB Connector/Led P.C.B.34
- Disassembly of CD Lid35
- Disassembly of Deck Mechanism Unit35
- Disassembly of Music Port PCB35
- Disassembly of Deck P.C.B.36
- Disassembly of Deck Mechanism37
- Replacement of Motor, Capstan Belt A, Capstan Belt B, and Winding Belt37
- Replacement of Pinch Roller and Head Block37
- Disassembly of Cassette Lid39
- Disassembly of Deck Mechanism P.C.B.39
- Rectification for Tape Jam Problem39
- Disassembly of Traverse Unit40
- Disassembly of D-Amp P.C.B.41
- Assembly of Audio Digital Amp IC43
- Replacement of Audio Digital Amp IC43
- Disassembly of Main P.C.B.46
- Replacement of Voltage Regulator IC47
- Assembly of Switch Transistor48
- Assembly of Voltage Regulator IC48
- Replacement of Switch Transistor48
- Disassembly of SMPS P.C.B.49
- Replacement of Switch Regulator IC49
- Assembly of Switch Regulator IC50
- Replacement of Switch Regulator Diode50
- Assembly of Switch Regulator Diode51
- Replacement of Regulator Diode51
- Disassembly of AC Inlet P.C.B.54
- Disassembly of Voltage Selector56
Disassembly and Assembly of Traverse Unit Assembly in Play Position58
- Checking and Repairing of Main P.C.B.60
- Checking and Repairing Panel, Deck P.C.B., Tact Switch PCB60
Service Fixture and Tools60
Service Positions60
- Checking and Repairing Jupiter USB P.C.B.61
- Checking and Repairing MIC PCB62
- Checking and Repairing of D-Amp P.C.B.63
- Checking and Repairing of AC Inlet P.C.B. & SMPS P.C.B.65
- Operation Check with Cassette Tape68
- Operation Check Without Cassette Tape68
Procedure for Checking Operation of Individual Parts of Deck Mechanism Unit68
Cassette Deck Section69
Measurement and Adjustments69
- Bias Frequency Check70
- Bias Voltage Check70
Voltage Measurement and Waveform Chart71
Waveform Chart76
Wiring Diagram79
Block Diagram81
Power Supply85
Notes of Schematic Diagram89
Schematic Diagram91
- Power Supply95
- Power Supply101
Printed Circuit Board109
Printed Circuit Boards110
Illustration of Ics, Transistors and Diodes117
Terminal Function of Integrated Circuits118
Exploded Views121
Packaging124
Replacement Parts List125

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