Allegro ABR521 Manuals

Manuals and User Guides for Allegro ABR521. We have 1 Allegro ABR521 manual available for free PDF download: Service Manual

Allegro ABR521 Service Manual

Allegro ABR521 Service Manual (175 pages)

VCR

Brand: Allegro | Category: DVD Recorder | Size: 24 MB

Table of Contents

Section 1 Summary

2
Section 2 Exploded Views

9
- Exploded Views
  10
Section 3 Electrical

13
- Overall Wiring Diagram
  
  14
- Vcr Part
  
  15
- Electrical Adjustment Procedures
  
  15
- Vcr Electrical Troubleshooting Guide
  
  16
  - Power(Smps) Circuit
    16
  - System/Key Circuit
    19
  - Servo Circuit
    20
  - Y/C Circuit
    23
  - Hi-Fi Circuit
    27
  - Tuner/If Circuit
    30
- Block Diagrams
  
  32
  - Power(Smps) Block Diagram
    32
  - Avcp Block Diagram
    33
  - System Block Diagram
    34
  - Jack Block Diagram
    35
  - Stuner/Mtz Block Diagram
    36
  - Avcp Block Diagram
    37
- Circuit Diagrams
  
  38
  - Power(Smps) Circuit Diagram
    38
  - A/V Circuit Diagram
    40
  - Hi-Fi Circuit Diagram
    41
  - System Circuit Diagram
    42
  - Jack Circuit Diagram
    43
  - Timer Circuit Diagram( 2 Tool )
    44
  - Timer Circuit Diagram( 3 Tool, 8 Tool )
    45
  - Timer Circuit Diagram( 4 Tool )
    46
  - Timer Circuit Diagram( 6 Tool )
    47
  - Timer Circuit Diagram( 7 Tool )
    48
  - Waveforms
    49
  - Circuit Voltage Chart
    50
- Printed Circuit Diagrams
  
  51
  - Vcr P.C.board
    51
  - Smps P.C.board
    52
  - Jack P.C.board
    53
  - Key P.C.board
    54
  - Timer P.C.board
    54
- Vdr Part
  
  56
- Vdr Electrical Troubleshooting Guide
  
  56
- Block Diagrams
  
  63
  - Vdr Set Total Block Diagram
    63
  - Vdr Main H/ W Block Diagram
    64
  - Power Block Diagram
    65
  - Audio In/ out Block Diagram
    66
  - Cpu & Control Register Block Diagram
    67
  - Video In/ out Block Diagram
    68
  - DV 1394 In/Out Block Diagram
    69
  - Memory Card In/ out Block Diagram
    70
  - Circuit Diagrams
    72
  - Bga 308P Circuit Diagram
    72
  - Ddr & B to B Connector Circuit Diagram
    73
  - Power, Flash, Connector Circuit Diagram
    74
  - Rst, Control/Status_Reg., Atapi
    75
  - Video_In, Video_Out Circuit Diagram
    76
  - Dv1394, Hdmi Circuit Diagram
    77
  - Audio In/Out Circuit Diagram
    78
  - Waveforms
    79
  - Circuit Voltage Chart
    80
- Printed Circuit Diagrams
  
  81
  - Vdr P.C.board(Top View)
    81
  - Vdr P.C.board(Bottom View)
    82
    
    Top View
    85
    
    Bottom View
    85
    
    Disassembly of Gear Assembly
    88
    
    Fixtures and Tools for Service
    96
    
    Mechanism Assembly Mode Check
    97
    
    Guide Roller Height Adjustment
    99
    
    Essential Check and Repair
    104
    
    Tools for Check and Repair
    104
    
    Maintenance Process
    104
    
    Regular Check and Repair
    104
    
    Deck Mechanism
    107
    
    Front Loading Mechanism
    110
Section 5 Rl-05 Loader Part

116
- Electrical Troubleshooting Guide
  
  117
- Waveforms
  
  131
  - Power & Reset Signal
    131
  - Main Clock1 for Ic202 (16.9Mhz)
    131
  - Sdram Clock
    132
  - Tray Open/Close Signal 1
    132
  - Tray Open/Close Signal 2
    133
  - Sled Move Signal 1
    133
  - Sled Move Signal 2
    134
  - Focus Search Signal
    134
  - Laser Turn on Signal
    135
  - Disc Type Judgement Waveform (CD Series)
    136
  - Disc Type Judgement Waveform (CD&CD-R)
    136
  - Disc Type Judgement Waveform (CD-Rw)
    137
  - Disc Type Judgement Waveform (DVD Series)
    137
  - Disc Type Judgement Waveform (Dvd_Single&R)
    138
  - Disc Type Judgement Waveform (DVD
    138
  - Disc Type Judgement Waveform (Dvdrw)
    139
  - Spindle Waveform1
    139
  - Spindle Waveform2
    140
  - Focus on Signal(CD)
    140
  - Focus on Signal(DVD)
    141
  - Track off Signal(CD)
    142
  - Track off Signal(DVD)
    143
  - Tilt Driver Signal(Disc Reading)
    143
  - Rf Waveform(DVD)
    144
  - Rf Waveform(CD)
    144
  - Wobble(DVD-R/Rw)_Reading
    145
  - Wobble(DVD+R/Rw)_Reading&Writing =>X1 Speed
    145
  - Ld Enable(DVD)
    146
  - Ld Enable(CD)
    146
  - Laser Power(Writing)_Initial State
    148
  - Laser Power(Writing)_Processing
    148
- The Difference of DVD-R/Rw, DVD+R/Rw Discs and DVD-Rom
  
  149
- How to Use Test Tool
  
  158
  - Optical Power Setting
    162
- Block Diagrams
  
  166
  - Overall Block Diagram
    166
  - Dsp Block Diagram
    167
  - Μ-COM BLOCK DIAGRAM
    168
  - Rf Block Diagram
    169
- Circuit Diagrams
  
  170
  - Rf1 Circuit Diagram
    170
  - Dsp Circuit Diagram
    171
  - Μ-COM CIRCUIT DIAGRAM
    172
- Circuit Voltage Chart
  
  173
- Printed Circuit Diagrams
  
  174
  - Main P.C.board
    174

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